body {
    font-family: 'Lexend', 'Noto Sans', sans-serif;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
}

:root {
    --brand-primary: #2b8cee;
    --brand-primary-strong: #2479ce;
    --brand-ink: #121a2e;
    --brand-ink-muted: #4d5f7b;
    --brand-canvas: #f4f7fb;
    --brand-surface: #ffffff;
    --brand-border: #cbd8e8;
    --brand-shadow-soft: 0 16px 36px -26px rgba(15, 23, 42, 0.45);
    --brand-shadow-lift: 0 22px 48px -24px rgba(15, 23, 42, 0.5);
    --brand-radius-md: 0.75rem;
    --brand-radius-lg: 1rem;
    --brand-focus-ring: 0 0 0 3px rgba(43, 140, 238, 0.28);
}

.dark {
    --brand-ink: #e5ecf8;
    --brand-ink-muted: #9bb0cc;
    --brand-canvas: #0f1724;
    --brand-surface: #111c2b;
    --brand-border: #293a52;
    --brand-shadow-soft: 0 20px 42px -30px rgba(0, 0, 0, 0.72);
    --brand-shadow-lift: 0 26px 56px -30px rgba(0, 0, 0, 0.78);
}

html {
    color-scheme: light;
}

html.dark {
    color-scheme: dark;
}

body {
    background-color: var(--brand-canvas);
    color: var(--brand-ink);
}

:where(a, button, [role="button"], input, select, textarea, [tabindex]:not([tabindex="-1"])):focus-visible {
    outline: 2px solid var(--brand-primary);
    outline-offset: 2px;
    box-shadow: var(--brand-focus-ring);
}

:where(input, select, textarea):focus-visible {
    border-color: var(--brand-primary);
}

#main-navbar .nav-brand-link {
    flex-shrink: 0;
    margin-right: 0.5rem;
}

#main-navbar .nav-primary-links {
    gap: 1rem;
    margin-left: 1rem;
}

#main-navbar .nav-primary-links > a,
#main-navbar .nav-primary-links > [data-nav-dropdown] > button {
    white-space: nowrap;
    line-height: 1.15;
}

@media (max-width: 1280px) {
    #main-navbar .nav-primary-links {
        gap: 0.75rem;
        margin-left: 0.75rem;
    }

    #main-navbar .nav-primary-links > a,
    #main-navbar .nav-primary-links > [data-nav-dropdown] > button {
        font-size: 0.86rem;
    }
}

.site-footer {
    border-top-color: var(--brand-border);
}

.pricing-table-scroll {
    position: relative;
    -webkit-overflow-scrolling: touch;
}

@media (max-width: 767px) {
    .pricing-table-scroll::after {
        content: '';
        position: absolute;
        top: 0;
        right: 0;
        width: 2.25rem;
        height: 100%;
        background: linear-gradient(to left, rgba(244, 247, 251, 0.95), rgba(244, 247, 251, 0));
        pointer-events: none;
    }

    .dark .pricing-table-scroll::after {
        background: linear-gradient(to left, rgba(15, 23, 36, 0.95), rgba(15, 23, 36, 0));
    }
}

/* Skip link and screen-reader-only: WCAG 2.1 AA */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}
.skip-link:focus {
    position: absolute;
    top: 0.5rem;
    left: 1rem;
    z-index: 100;
    width: auto;
    height: auto;
    padding: 0.5rem 1rem;
    margin: 0;
    overflow: visible;
    clip: auto;
    white-space: normal;
    background: var(--color-primary, #4f46e5);
    color: #fff;
    border-radius: 0.5rem;
    outline: 2px solid var(--color-primary, #4f46e5);
    outline-offset: 2px;
}

.material-symbols-outlined {
    font-variation-settings:
    'FILL' 0,
    'wght' 400,
    'GRAD' 0,
    'opsz' 24;
}

.material-symbols-outlined.fill,
.material-symbols-outlined.filled {
    font-variation-settings:
    'FILL' 1,
    'wght' 400,
    'GRAD' 0,
    'opsz' 24;
}

.filled-icon {
    font-variation-settings:
    'FILL' 1,
    'wght' 400,
    'GRAD' 0,
    'opsz' 24;
}

::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

.scrollbar-hide::-webkit-scrollbar,
.no-scrollbar::-webkit-scrollbar {
    display: none;
}

.scrollbar-hide,
.no-scrollbar {
    -ms-overflow-style: none;
    scrollbar-width: none;
}

.perspective-1000 {
    perspective: 1000px;
}

.transform-style-3d {
    transform-style: preserve-3d;
}

.backface-hidden {
    backface-visibility: hidden;
}

.rotate-y-180 {
    transform: rotateY(180deg);
}

/* Toast Animations */
@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOutRight {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(100%);
        opacity: 0;
    }
}

.animate-slide-in-right {
    animation: slideInRight 0.3s ease-out;
}

.animate-slide-out-right {
    animation: slideOutRight 0.3s ease-in;
}

/* ---- Nav: focus visible (keyboard/screen reader) ---- */
.nav-focus:focus {
    outline: none;
}
.nav-focus:focus-visible {
    outline: 2px solid currentColor;
    outline-offset: 2px;
}
/* Fallback for older browsers */
.nav-focus:focus:not(:focus-visible) {
    outline: none;
}

/* Nav active page (aria-current="page") - matches Tailwind primary */
.nav-active {
    font-weight: 600;
    color: #2b8cee;
}
.dark .nav-active {
    color: #5ba3f5;
}

/* ---- Desktop dropdown: click-open (not hover) ---- */
[data-nav-dropdown] .nav-dropdown-panel {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.2s ease, visibility 0.2s ease;
}
[data-nav-dropdown].nav-dropdown-open .nav-dropdown-panel {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}
[data-nav-dropdown].nav-dropdown-open .nav-dropdown-chevron {
    transform: rotate(180deg);
}

/* ---- Mobile drawer ---- */
.nav-drawer {
    pointer-events: none;
    visibility: hidden;
    transition: visibility 0.25s ease;
}
.nav-drawer[aria-hidden="false"] {
    pointer-events: auto;
    visibility: visible;
}
.nav-drawer-backdrop {
    opacity: 0;
    transition: opacity 0.25s ease;
}
.nav-drawer[aria-hidden="false"] .nav-drawer-backdrop {
    opacity: 1;
}
.nav-drawer-panel {
    transform: translateX(100%);
    transition: transform 0.25s ease-out;
}
.nav-drawer[aria-hidden="false"] .nav-drawer-panel {
    transform: translateX(0);
}

/* Body scroll lock while drawer is open */
.nav-body-scroll-lock {
    overflow: hidden;
    touch-action: none;
}

/* ---- Nav personalization: compact mode (localStorage only) ---- */
#main-navbar.nav-compact .nav-bar-row {
    height: 3rem;
    min-height: 3rem;
}
#main-navbar.nav-compact .nav-bar-row .text-sm {
    font-size: 0.8125rem;
}
#main-navbar.nav-compact .nav-bar-row .text-xl {
    font-size: 1.125rem;
}
#main-navbar.nav-compact .nav-bar-row .material-symbols-outlined.text-\[20px\] {
    font-size: 18px;
}
#main-navbar.nav-compact .nav-bar-row .material-symbols-outlined.text-\[24px\] {
    font-size: 20px;
}

/* ---- Textbook chat: citation tooltips, message body, dark mode ---- */
.textbook-chat-citation-tooltip {
    pointer-events: none;
}
.textbook-chat-message-body a {
    @apply text-primary hover:underline;
}
.textbook-chat-message-body pre,
.textbook-chat-message-body code {
    @apply bg-slate-100 dark:bg-slate-700 rounded;
}
.textbook-chat-message-body pre {
    @apply p-3 overflow-x-auto;
}
.textbook-chat-message-body pre code {
    @apply bg-transparent p-0;
}
.textbook-chat-message-body .katex {
    font-size: 1.05em;
}
.dark .textbook-chat-message-body .katex {
    color: inherit;
}
[data-render-latex] .katex-display,
.quiz-latex-content .katex-display,
.flashcard-latex-content .katex-display,
.latex-content .katex-display,
.textbook-chat-message-body .katex-display {
    overflow-x: auto;
    overflow-y: hidden;
    padding: 0.25rem 0;
    margin: 0.4rem 0;
}
[data-render-latex] .katex-display > .katex,
.quiz-latex-content .katex-display > .katex,
.flashcard-latex-content .katex-display > .katex,
.latex-content .katex-display > .katex,
.textbook-chat-message-body .katex-display > .katex {
    white-space: nowrap;
}
.quiz-latex-content,
.flashcard-latex-content,
.latex-content {
    overflow-x: auto;
    overflow-y: hidden;
}
.quiz-latex-content svg,
.flashcard-latex-content svg,
.latex-content svg,
[data-render-latex] svg,
.entity-content-katex svg {
    max-width: 100%;
    height: auto;
    display: block;
}
.flashcard-latex-content .katex {
    font-size: 1em;
    line-height: 1.2;
}
#main-navbar.nav-compact .nav-bar-row .gap-6 {
    gap: 0.875rem;
}

/* ---- Lesson chat popup: floating launcher + panel, bottom sheet on mobile ---- */
.lesson-chat-body-open {
    overflow: hidden;
    touch-action: none;
}

.lesson-chat-selection-tooltip {
    position: fixed;
    z-index: 60;
    background-color: rgb(15 23 42);
    color: rgb(255 255 255);
    border-radius: 0.625rem;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.28);
    padding: 0.35rem;
    transition: opacity 0.12s ease, transform 0.12s ease, visibility 0.12s ease;
}
.lesson-chat-selection-tooltip--hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(4px);
}
.lesson-chat-selection-tooltip__action {
    border: 0;
    background: transparent;
    color: inherit;
    font-size: 0.8125rem;
    font-weight: 600;
    line-height: 1;
    padding: 0.5rem 0.65rem;
    border-radius: 0.5rem;
    cursor: pointer;
}
.lesson-chat-selection-tooltip__action:hover {
    background-color: rgba(255, 255, 255, 0.14);
}
.lesson-chat-selection-tooltip__action:focus-visible {
    outline: 2px solid rgb(255 255 255);
    outline-offset: 2px;
}

.lesson-chat-launcher {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    z-index: 40;
    width: 3.5rem;
    height: 3.5rem;
    border-radius: 9999px;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.lesson-chat-launcher:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}
.lesson-chat-launcher:focus-visible {
    outline: 2px solid currentColor;
    outline-offset: 2px;
}

.lesson-chat-panel {
    position: fixed;
    z-index: 50;
    display: flex;
    flex-direction: column;
    background-color: rgb(255 255 255);
    border: 1px solid rgb(229 231 235);
    border-radius: 1rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    overflow: hidden;
    opacity: 1;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s ease;
}
.dark .lesson-chat-panel {
    background-color: rgb(22 27 34);
    border-color: rgb(31 41 55);
}

/* Desktop: floating panel bottom-right */
@media (min-width: 640px) {
    .lesson-chat-panel {
        bottom: 5.5rem;
        right: 1.5rem;
        width: 420px;
        max-width: calc(100vw - 3rem);
        height: 560px;
        max-height: calc(100vh - 8rem);
    }
    .lesson-chat-panel--closed {
        opacity: 0;
        visibility: hidden;
        pointer-events: none;
        transform: translateY(0.5rem) scale(0.98);
    }
}

/* Mobile: full-width bottom sheet */
@media (max-width: 639px) {
    .lesson-chat-panel {
        left: 0;
        right: 0;
        bottom: 0;
        width: 100%;
        height: 85vh;
        max-height: 85vh;
        border-radius: 1rem 1rem 0 0;
    }
    .lesson-chat-panel--closed {
        opacity: 0;
        visibility: hidden;
        pointer-events: none;
        transform: translateY(100%);
    }
}

.lesson-chat-panel__header {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid rgb(229 231 235);
}
.dark .lesson-chat-panel__header {
    border-color: rgb(55 65 81);
}

.lesson-chat-panel__messages {
    flex: 1 1 0;
    min-height: 0;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    background-color: rgb(255 255 255);
}
.dark .lesson-chat-panel__messages {
    background-color: rgb(22 27 34);
}

.lesson-chat-panel__input-row {
    flex-shrink: 0;
    padding: 0.75rem 1rem;
    border-top: 1px solid rgb(229 231 235);
    background: rgb(255 255 255);
}
.dark .lesson-chat-panel__input-row {
    border-color: rgb(55 65 81);
    background: rgb(22 27 34);
}

.lesson-chat-selected-context {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    padding: 0.5rem 0.625rem;
    border-radius: 0.625rem;
    border: 1px solid rgb(191 219 254);
    background-color: rgb(239 246 255);
}
.dark .lesson-chat-selected-context {
    border-color: rgb(59 130 246 / 0.45);
    background-color: rgb(30 58 138 / 0.2);
}
.lesson-chat-selected-context__text {
    flex: 1 1 auto;
    min-width: 0;
    font-size: 0.75rem;
    line-height: 1.25;
    color: rgb(30 64 175);
    white-space: nowrap;
    text-overflow: ellipsis;
    overflow: hidden;
}
.dark .lesson-chat-selected-context__text {
    color: rgb(147 197 253);
}
.lesson-chat-selected-context__clear {
    border: 0;
    background: transparent;
    color: rgb(59 130 246);
    border-radius: 0.375rem;
    width: 1.5rem;
    height: 1.5rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}
.lesson-chat-selected-context__clear:hover {
    background-color: rgba(59, 130, 246, 0.1);
}

.lesson-chat-panel .message-item {
    flex-shrink: 0;
}

/* ---- Lesson semantic block styles ---- */
.lesson-blocks {
    --lesson-block-padding: 1.25rem;
}
.lesson-block {
    border: 1px solid #e5e7eb;
    border-radius: 0.9rem;
    padding: var(--lesson-block-padding, 1.25rem);
    overflow-x: auto;
}
.dark .lesson-block {
    border-color: #374151;
}
.lesson-block__header {
    margin-bottom: 0.75rem;
}
.lesson-block__header h3 {
    margin: 0;
    line-height: 1.35;
}
.lesson-block__content,
.lesson-block__subcontent,
.lesson-solution-panel__content {
    overflow-x: auto;
    word-break: break-word;
}
/* Prose inside lesson blocks: consistent spacing for headings, lists, paragraphs */
.lesson-block .prose h2,
.lesson-block .prose h3,
.lesson-block .prose h4 {
    margin-top: 1.25em;
    margin-bottom: 0.5em;
    font-weight: 600;
}
.lesson-block .prose h2:first-child,
.lesson-block .prose h3:first-child,
.lesson-block .prose h4:first-child {
    margin-top: 0;
}
.lesson-block .prose p {
    margin-top: 0.75em;
    margin-bottom: 0.75em;
}
.lesson-block .prose p:first-child {
    margin-top: 0;
}
.lesson-block .prose ul,
.lesson-block .prose ol {
    margin-top: 0.75em;
    margin-bottom: 0.75em;
    padding-left: 1.5em;
}
.lesson-block .prose li {
    margin-top: 0.35em;
    margin-bottom: 0.35em;
}
.lesson-block .prose blockquote {
    margin-top: 1em;
    margin-bottom: 1em;
    padding-left: 1em;
    border-left-width: 4px;
}
.lesson-block__subcontent-wrap {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px dashed #e5e7eb;
}
.dark .lesson-block__subcontent-wrap {
    border-top-color: #374151;
}
.lesson-block__subcontent-label {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: #475569;
    margin-bottom: 0.5rem;
}
.dark .lesson-block__subcontent-label {
    color: #94a3b8;
}
.lesson-block__subcontent {
    margin-top: 0;
    padding-top: 0;
    border-top: none;
}
.dark .lesson-block__subcontent {
    border-top: none;
}
.lesson-block--explanation {
    border-left-width: 4px;
    border-left-color: #2563eb;
    background: #eff6ff;
}
.dark .lesson-block--explanation {
    border-left-color: #3b82f6;
    background: rgba(30, 64, 175, 0.2);
}
/* Section divider: explanation block with only a title (e.g. "Worked Examples", "Practice Questions") */
.lesson-block--section-only {
    padding-top: 0.75rem;
    padding-bottom: 0.75rem;
    border-left-width: 2px;
    background: transparent;
}
.dark .lesson-block--section-only {
    background: transparent;
}
.lesson-block--section-only .lesson-block__header {
    margin-bottom: 0;
}
.lesson-block--section-only .lesson-block__header h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: #374151;
}
.dark .lesson-block--section-only .lesson-block__header h3 {
    color: #e5e7eb;
}
.lesson-block__header--caption {
    margin-bottom: 0.5rem;
}
.lesson-block__header--caption span {
    font-size: 0.8125rem;
    font-weight: 500;
    color: #6b7280;
}
.dark .lesson-block__header--caption span {
    color: #9ca3af;
}
.lesson-block--example {
    border-color: #bfdbfe;
    background: #eff6ff;
}
.dark .lesson-block--example {
    border-color: #1d4ed8;
    background: rgba(30, 64, 175, 0.2);
}
.lesson-block--tip {
    border-color: #fde68a;
    background: #fffbeb;
}
.dark .lesson-block--tip {
    border-color: #b45309;
    background: rgba(146, 64, 14, 0.25);
}
.lesson-block--error {
    border-color: #fecaca;
    background: #fef2f2;
}
.dark .lesson-block--error {
    border-color: #b91c1c;
    background: rgba(127, 29, 29, 0.25);
}
.lesson-block--diagram {
    border-color: #c7d2fe;
    background: #eef2ff;
}
.dark .lesson-block--diagram {
    border-color: #4338ca;
    background: rgba(49, 46, 129, 0.25);
}
.lesson-block__diagram-content {
    min-height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.lesson-block__diagram-content svg {
    max-width: 100%;
    min-width: 120px;
    height: auto;
    display: block;
}
/* Dark mode: invert SVG colors so dark-on-light becomes light-on-dark */
.dark .lesson-block__diagram-content svg,
.dark .custom-entity-richtext svg,
.dark [data-render-latex] svg {
    filter: invert(0.88) hue-rotate(180deg);
}
.lesson-block--question {
    border-color: #ddd6fe;
    background: #f5f3ff;
}
.dark .lesson-block--question {
    border-color: #6d28d9;
    background: rgba(76, 29, 149, 0.25);
}
.lesson-block--fallback {
    border: 1px solid #e5e7eb;
    background: #f9fafb;
}
.dark .lesson-block--fallback {
    border-color: #374151;
    background: rgba(31, 41, 55, 0.5);
}
.lesson-solution-toggle {
    margin-top: 0.75rem;
    border: 1px solid #a5b4fc;
    background: #ffffff;
    color: #3730a3;
    border-radius: 0.6rem;
    padding: 0.5rem 0.75rem;
    font-weight: 600;
    font-size: 0.875rem;
}
.dark .lesson-solution-toggle {
    background: #111827;
    color: #c7d2fe;
    border-color: #6366f1;
}
.lesson-solution-toggle:focus-visible {
    outline: 2px solid currentColor;
    outline-offset: 2px;
}
.lesson-solution-panel {
    margin-top: 0.75rem;
    border-top: 1px dashed #94a3b8;
    padding-top: 0.75rem;
}
.dark .lesson-solution-panel {
    border-top-color: #6b7280;
}
.lesson-solution-panel__label {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: #475569;
    margin-bottom: 0.25rem;
}
.dark .lesson-solution-panel__label {
    color: #cbd5e1;
}

@media (max-width: 640px) {
    .lesson-block {
        padding: 0.875rem;
        border-radius: 0.75rem;
    }
    .lesson-solution-toggle {
        margin-top: 0.5rem;
        padding: 0.5rem 0.625rem;
        font-size: 0.8125rem;
    }
    .lesson-solution-panel {
        margin-top: 0.5rem;
        padding-top: 0.5rem;
    }
}

/* ----- Pricing page: toggle and comparison chart ----- */
.pricing-toggle .pricing-toggle-btn {
    color: rgb(107 114 128);
}
.pricing-toggle .pricing-toggle-btn:hover {
    color: rgb(55 65 81);
}
.dark .pricing-toggle .pricing-toggle-btn {
    color: rgb(156 163 175);
}
.dark .pricing-toggle .pricing-toggle-btn:hover {
    color: rgb(229 231 235);
}
.pricing-toggle .pricing-toggle-btn.pricing-toggle-active {
    background: rgb(255 255 255);
    color: rgb(79 70 229);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}
.dark .pricing-toggle .pricing-toggle-btn.pricing-toggle-active {
    background: rgb(31 41 55);
    color: rgb(129 140 248);
}

.pricing-comparison-table th,
.pricing-comparison-table td {
    white-space: nowrap;
}
.pricing-comparison-table td:first-child {
    white-space: normal;
}
@media (max-width: 640px) {
    .pricing-comparison-table {
        font-size: 0.8125rem;
    }
    .pricing-comparison-table th,
    .pricing-comparison-table td {
        padding: 0.5rem 0.75rem;
    }
}

/* ---- Course dashboard (shared regular + custom) ---- */
.course-dashboard-skeleton {
    background-color: #e5e7eb;
    border-radius: 0.5rem;
    animation: course-dashboard-skeleton-pulse 1.5s ease-in-out infinite;
}
.dark .course-dashboard-skeleton {
    background-color: #374151;
}
@keyframes course-dashboard-skeleton-pulse {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 1; }
}

.course-dashboard-card {
    border-radius: 0.9rem;
    border: 1px solid #e5e7eb;
    background-color: #ffffff;
}
.dark .course-dashboard-card {
    border-color: #1f2937;
    background-color: #161b22;
}
.course-dashboard-card--due,
.course-dashboard-card--quick {
    padding: 1.25rem;
}
.course-dashboard-card--due {
    position: relative;
    overflow: hidden;
    border-color: rgba(251, 191, 36, 0.22);
    background:
        radial-gradient(circle at top right, rgba(251, 191, 36, 0.16), transparent 12rem),
        linear-gradient(180deg, rgba(255, 255, 255, 0.99), rgba(255, 251, 235, 0.92));
    box-shadow: 0 26px 54px -42px rgba(180, 83, 9, 0.34);
}
.course-dashboard-card--due::before {
    content: "";
    position: absolute;
    inset: auto -10% -60% 48%;
    height: 13rem;
    background: radial-gradient(circle, rgba(251, 191, 36, 0.18), transparent 62%);
    pointer-events: none;
}
.dark .course-dashboard-card--due {
    border-color: rgba(245, 158, 11, 0.24);
    background:
        radial-gradient(circle at top right, rgba(245, 158, 11, 0.18), transparent 14rem),
        linear-gradient(180deg, rgba(22, 27, 34, 0.98), rgba(41, 37, 36, 0.94));
    box-shadow: 0 32px 64px -44px rgba(2, 6, 23, 0.8);
}
.dark .course-dashboard-card--due::before {
    background: radial-gradient(circle, rgba(251, 191, 36, 0.18), transparent 62%);
}
.course-dashboard-card--quick {
    box-shadow: 0 10px 24px -20px rgba(2, 6, 23, 0.15);
}
.dark .course-dashboard-card--quick {
    box-shadow: 0 10px 24px -20px rgba(0, 0, 0, 0.4);
}
.course-dashboard-card--next,
.course-dashboard-card--weak {
    padding: 1.5rem;
}
.course-dashboard-weak-due-wrap {
    margin-bottom: 1rem;
}
.course-dashboard-weak-due {
    border: 1px solid rgba(251, 191, 36, 0.26);
    border-radius: 1rem;
    padding: 1rem;
    background:
        radial-gradient(circle at top right, rgba(251, 191, 36, 0.14), transparent 12rem),
        linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(255, 251, 235, 0.94));
}
.dark .course-dashboard-weak-due {
    border-color: rgba(245, 158, 11, 0.24);
    background:
        radial-gradient(circle at top right, rgba(245, 158, 11, 0.16), transparent 13rem),
        linear-gradient(180deg, rgba(41, 37, 36, 0.72), rgba(15, 23, 42, 0.92));
}
.course-dashboard-weak-divider {
    height: 1px;
    margin: 1rem 0 1.2rem;
    background: linear-gradient(90deg, rgba(148, 163, 184, 0), rgba(148, 163, 184, 0.38), rgba(148, 163, 184, 0));
}
.dark .course-dashboard-weak-divider {
    background: linear-gradient(90deg, rgba(71, 85, 105, 0), rgba(71, 85, 105, 0.55), rgba(71, 85, 105, 0));
}
.course-dashboard-card--next,
.course-dashboard-card--weak,
#cc-recovery-section.course-dashboard-card {
    position: relative;
    overflow: hidden;
    border-color: rgba(203, 213, 225, 0.9);
    background:
        radial-gradient(circle at top right, rgba(59, 130, 246, 0.08), transparent 12rem),
        linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(248, 250, 252, 0.96));
    box-shadow: 0 28px 56px -40px rgba(15, 23, 42, 0.24);
}
.dark .course-dashboard-card--next,
.dark .course-dashboard-card--weak,
.dark #cc-recovery-section.course-dashboard-card {
    border-color: rgba(51, 65, 85, 0.9);
    background:
        radial-gradient(circle at top right, rgba(96, 165, 250, 0.12), transparent 14rem),
        linear-gradient(180deg, rgba(22, 27, 34, 0.98), rgba(15, 23, 42, 0.95));
    box-shadow: 0 34px 64px -44px rgba(2, 6, 23, 0.74);
}
.course-dashboard-feature-head {
    display: flex;
    align-items: flex-start;
    gap: 0.95rem;
    margin-bottom: 1.2rem;
}
.course-dashboard-feature-head--compact {
    gap: 0.85rem;
    margin-bottom: 1rem;
}
.course-dashboard-feature-head--weak-revision {
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: flex-start;
    gap: 0.75rem 1rem;
}
.course-dashboard-weak-head-main {
    flex: 1 1 12rem;
    min-width: 0;
}
.course-dashboard-weak-revision-toolbar {
    flex: 0 0 auto;
    max-width: 100%;
}
.course-dashboard-feature-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.9rem;
    height: 2.9rem;
    border-radius: 0.95rem;
    flex-shrink: 0;
    border: 1px solid rgba(148, 163, 184, 0.22);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.65);
}
.course-dashboard-feature-icon .material-symbols-outlined {
    font-size: 1.5rem;
}
.course-dashboard-feature-icon--blue {
    color: #2563eb;
    background: linear-gradient(135deg, rgba(219, 234, 254, 0.95), rgba(239, 246, 255, 0.96));
}
.course-dashboard-feature-icon--amber {
    color: #d97706;
    background: linear-gradient(135deg, rgba(254, 243, 199, 0.95), rgba(255, 251, 235, 0.96));
}
.course-dashboard-feature-icon--slate {
    color: #0f172a;
    background: linear-gradient(135deg, rgba(226, 232, 240, 0.95), rgba(248, 250, 252, 0.96));
}
.dark .course-dashboard-feature-icon {
    border-color: rgba(71, 85, 105, 0.36);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.04);
}
.dark .course-dashboard-feature-icon--blue {
    color: #93c5fd;
    background: linear-gradient(135deg, rgba(30, 64, 175, 0.34), rgba(15, 23, 42, 0.88));
}
.dark .course-dashboard-feature-icon--amber {
    color: #fbbf24;
    background: linear-gradient(135deg, rgba(120, 53, 15, 0.42), rgba(41, 37, 36, 0.9));
}
.dark .course-dashboard-feature-icon--slate {
    color: #e2e8f0;
    background: linear-gradient(135deg, rgba(51, 65, 85, 0.6), rgba(15, 23, 42, 0.9));
}
.course-dashboard-feature-kicker {
    font-size: 0.72rem;
    line-height: 1;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    font-weight: 700;
    color: #64748b;
    margin-bottom: 0.4rem;
}
.course-dashboard-feature-title {
    font-size: 1.35rem;
    line-height: 1.15;
    font-weight: 800;
    color: #0f172a;
}
.course-dashboard-feature-title--compact {
    font-size: 1.08rem;
    line-height: 1.2;
}
.dark .course-dashboard-feature-title {
    color: #f8fafc;
}
.course-dashboard-feature-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.3rem 0.58rem;
    border-radius: 999px;
    background: rgba(59, 130, 246, 0.1);
    color: #64748b;
    font-size: 0.78rem;
    font-weight: 600;
}
.dark .course-dashboard-feature-badge {
    background: rgba(59, 130, 246, 0.18);
    color: #cbd5e1;
}
.course-dashboard-feature-body {
    position: relative;
    z-index: 1;
}
.course-dashboard-due-skeleton {
    height: 5.2rem;
    border-radius: 1.35rem;
}
.course-dashboard-due-summary {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.85rem;
    flex-wrap: wrap;
}
.course-dashboard-due-stat {
    display: flex;
    align-items: center;
    min-width: 0;
    flex: 0 1 9.5rem;
    gap: 0.65rem;
    padding: 0.65rem 0.75rem;
    border-radius: 1rem;
    border: 1px solid rgba(252, 211, 77, 0.26);
    background:
        linear-gradient(145deg, rgba(255, 255, 255, 0.92), rgba(255, 251, 235, 0.96));
    box-shadow:
        inset 0 1px 0 rgba(255,255,255,0.72),
        0 18px 34px -28px rgba(180, 83, 9, 0.22);
}
.dark .course-dashboard-due-stat {
    border-color: rgba(245, 158, 11, 0.18);
    background:
        linear-gradient(145deg, rgba(41, 37, 36, 0.72), rgba(15, 23, 42, 0.92));
    box-shadow:
        inset 0 1px 0 rgba(255,255,255,0.04),
        0 18px 34px -28px rgba(2, 6, 23, 0.54);
}
.course-dashboard-due-stat__main {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    min-width: 0;
    width: 100%;
}
.course-dashboard-due-stat__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.2rem;
    height: 2.2rem;
    border-radius: 0.75rem;
    flex-shrink: 0;
    color: #b45309;
    background: linear-gradient(135deg, rgba(254, 240, 138, 0.3), rgba(255, 251, 235, 0.92));
    border: 1px solid rgba(251, 191, 36, 0.18);
}
.dark .course-dashboard-due-stat__icon {
    color: #fbbf24;
    background: linear-gradient(135deg, rgba(120, 53, 15, 0.32), rgba(41, 37, 36, 0.92));
    border-color: rgba(245, 158, 11, 0.16);
}
.course-dashboard-due-stat__copy {
    display: flex;
    flex-direction: column;
    gap: 0.08rem;
}
.course-dashboard-due-stat__label {
    font-size: 0.72rem;
    font-weight: 700;
    line-height: 1.2;
    color: #7c5a14;
}
.course-dashboard-due-stat__value {
    margin-top: 0;
    font-size: clamp(1.45rem, 2vw, 1.8rem);
    line-height: 1;
    font-weight: 900;
    color: #0f172a;
}
.dark .course-dashboard-due-stat__value {
    color: #f8fafc;
}
.course-dashboard-due-cta {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    flex: 0 0 auto;
}
.dark .course-dashboard-due-cta {
    background: none;
    box-shadow: none;
}
.course-dashboard-due-action {
    width: auto;
    min-width: 0;
    flex-shrink: 0;
}
.course-dashboard-due-action--soft {
    justify-content: center;
    color: #ffffff;
    background: linear-gradient(135deg, #d97706, #f59e0b);
    border: 1px solid rgba(217, 119, 6, 0.18);
    box-shadow:
        0 18px 30px -20px rgba(180, 83, 9, 0.55),
        inset 0 1px 0 rgba(255,255,255,0.18);
}
.course-dashboard-due-action--soft:hover {
    background: linear-gradient(135deg, #c2410c, #ea580c);
    border-color: rgba(194, 65, 12, 0.28);
    box-shadow:
        0 22px 36px -20px rgba(154, 52, 18, 0.62),
        inset 0 1px 0 rgba(255,255,255,0.22);
}
.dark .course-dashboard-due-action--soft {
    color: #fff7ed;
    background: linear-gradient(135deg, rgba(217, 119, 6, 0.94), rgba(245, 158, 11, 0.92));
    border-color: rgba(251, 191, 36, 0.16);
    box-shadow:
        0 18px 30px -20px rgba(245, 158, 11, 0.28),
        inset 0 1px 0 rgba(255,255,255,0.08);
}
.dark .course-dashboard-due-action--soft:hover {
    background: linear-gradient(135deg, rgba(234, 88, 12, 0.96), rgba(249, 115, 22, 0.94));
    border-color: rgba(251, 191, 36, 0.24);
}
.course-dashboard-feature-skeleton {
    height: 5.7rem;
    border-radius: 1rem;
}
.course-dashboard-next-hero {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 1rem;
    padding: 1.2rem;
    border-radius: 1.2rem;
    border: 1px solid rgba(59, 130, 246, 0.16);
    background:
        linear-gradient(135deg, rgba(239, 246, 255, 0.96), rgba(255, 255, 255, 0.98));
}
.dark .course-dashboard-next-hero {
    border-color: rgba(59, 130, 246, 0.22);
    background:
        linear-gradient(135deg, rgba(30, 41, 59, 0.94), rgba(15, 23, 42, 0.98));
}
.course-dashboard-next-meta {
    min-width: 0;
    flex: 1;
}
.course-dashboard-next-label {
    display: inline-flex;
    align-items: center;
    padding: 0.34rem 0.62rem;
    border-radius: 999px;
    background: rgba(59, 130, 246, 0.12);
    color: #2563eb;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 0.75rem;
}
.dark .course-dashboard-next-label {
    background: rgba(96, 165, 250, 0.14);
    color: #93c5fd;
}
.course-dashboard-next-title {
    font-size: 1.15rem;
    line-height: 1.45;
    font-weight: 700;
    color: #334155;
    margin: 0;
}
.dark .course-dashboard-next-title {
    color: #e2e8f0;
}
.course-dashboard-next-button {
    flex-shrink: 0;
    box-shadow: 0 16px 30px -18px rgba(37, 99, 235, 0.7);
}
.course-dashboard-next-list {
    display: grid;
    gap: 0.75rem;
}
.course-dashboard-rec-item {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 0.9rem;
    width: 100%;
    text-align: left;
    padding: 0.95rem 1rem;
    border-radius: 1rem;
    border: 1px solid rgba(226, 232, 240, 0.95);
    background: rgba(255,255,255,0.8);
    transition: border-color 0.2s ease, transform 0.18s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}
.course-dashboard-rec-item:hover {
    border-color: rgba(59, 130, 246, 0.42);
    box-shadow: 0 18px 32px -24px rgba(30, 64, 175, 0.4);
    transform: translateY(-1px);
}
.dark .course-dashboard-rec-item {
    border-color: rgba(51, 65, 85, 0.9);
    background: rgba(15, 23, 42, 0.72);
}
.dark .course-dashboard-rec-item:hover {
    border-color: rgba(96, 165, 250, 0.34);
}
.course-dashboard-rec-item__title {
    display: block;
    font-size: 0.98rem;
    line-height: 1.35;
    font-weight: 700;
    color: #0f172a;
}
.dark .course-dashboard-rec-item__title {
    color: #f8fafc;
}
.course-dashboard-rec-item__meta {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    margin-top: 0.4rem;
    color: #64748b;
    font-size: 0.82rem;
    font-weight: 600;
}
.dark .course-dashboard-rec-item__meta {
    color: #94a3b8;
}
.course-dashboard-rec-item__arrow {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    border-radius: 999px;
    background: rgba(59, 130, 246, 0.1);
    color: #2563eb;
    flex-shrink: 0;
}
.dark .course-dashboard-rec-item__arrow {
    background: rgba(96, 165, 250, 0.14);
    color: #93c5fd;
}
.course-dashboard-rec-item--static {
    cursor: default;
    transform: none;
    border-style: dashed;
    border-color: rgba(203, 213, 225, 0.95);
    background: rgba(248, 250, 252, 0.92);
    box-shadow: none;
}
.course-dashboard-rec-item--static:hover {
    transform: none;
    border-color: rgba(203, 213, 225, 1);
    box-shadow: none;
}
.dark .course-dashboard-rec-item--static {
    border-color: rgba(71, 85, 105, 0.85);
    background: rgba(15, 23, 42, 0.55);
}
.dark .course-dashboard-rec-item--static:hover {
    border-color: rgba(71, 85, 105, 0.95);
}

.learning-pulse-card .learning-pulse-rec-row.course-dashboard-rec-item {
    padding: 0.65rem 0.8rem;
    border-radius: 0.75rem;
    gap: 0.65rem;
}
.learning-pulse-card .learning-pulse-rec-title {
    font-size: 0.875rem;
    font-weight: 600;
}
.learning-pulse-card .learning-pulse-rec-arrow {
    width: 1.75rem;
    height: 1.75rem;
}

.learning-pulse-card .learning-pulse-recovery-row.course-dashboard-recovery-item {
    padding: 0.65rem 0.8rem;
    border-radius: 0.75rem;
    gap: 0.65rem;
}
.course-dashboard-recovery-item--static {
    cursor: default;
    transform: none;
    border-style: dashed;
    border-left-style: dashed;
    border-color: rgba(203, 213, 225, 0.95);
    background: rgba(248, 250, 252, 0.92);
    box-shadow: none;
}
.course-dashboard-recovery-item--static:hover {
    transform: none;
    box-shadow: none;
    border-color: rgba(203, 213, 225, 1);
}
.dark .course-dashboard-recovery-item--static {
    border-color: rgba(71, 85, 105, 0.85);
    background: rgba(15, 23, 42, 0.55);
}
.dark .course-dashboard-recovery-item--static:hover {
    border-color: rgba(71, 85, 105, 0.95);
}

.course-dashboard-weak-item,
.course-dashboard-recovery-item {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 0.9rem;
    width: 100%;
    text-align: left;
    padding: 0.95rem 1rem;
    border-radius: 1rem;
    border: 1px solid rgba(226, 232, 240, 0.95);
    background: rgba(255,255,255,0.82);
    transition: border-color 0.2s ease, transform 0.18s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}
.course-dashboard-weak-item:hover,
.course-dashboard-recovery-item:hover {
    transform: translateY(-1px);
}
.dark .course-dashboard-weak-item,
.dark .course-dashboard-recovery-item {
    border-color: rgba(51, 65, 85, 0.9);
    background: rgba(15, 23, 42, 0.72);
}
.course-dashboard-weak-item {
    border-left: 3px solid rgba(249, 115, 22, 0.45);
}
.course-dashboard-weak-item:hover {
    border-color: rgba(249, 115, 22, 0.38);
    box-shadow: 0 16px 28px -24px rgba(234, 88, 12, 0.45);
}
.course-dashboard-recovery-item {
    border-left: 3px solid rgba(71, 85, 105, 0.35);
}
.course-dashboard-recovery-item:hover {
    border-color: rgba(71, 85, 105, 0.28);
    box-shadow: 0 18px 28px -24px rgba(15, 23, 42, 0.36);
}
.course-dashboard-weak-item__title,
.course-dashboard-recovery-item__title {
    display: block;
    font-size: 0.96rem;
    line-height: 1.35;
    font-weight: 700;
    color: #0f172a;
}
.dark .course-dashboard-weak-item__title,
.dark .course-dashboard-recovery-item__title {
    color: #f8fafc;
}
.course-dashboard-weak-item__meta,
.course-dashboard-recovery-item__meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.42rem;
}
.course-dashboard-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.28rem 0.6rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.01em;
}
.course-dashboard-pill--amber {
    background: rgba(251, 191, 36, 0.16);
    color: #b45309;
}
.course-dashboard-pill--slate {
    background: rgba(148, 163, 184, 0.15);
    color: #475569;
}
.course-dashboard-pill--blue {
    background: rgba(59, 130, 246, 0.12);
    color: #2563eb;
}
.dark .course-dashboard-pill--amber {
    background: rgba(245, 158, 11, 0.18);
    color: #fcd34d;
}
.dark .course-dashboard-pill--slate {
    background: rgba(71, 85, 105, 0.24);
    color: #cbd5e1;
}
.dark .course-dashboard-pill--blue {
    background: rgba(59, 130, 246, 0.18);
    color: #93c5fd;
}
.course-dashboard-empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.85rem;
    min-height: 14rem;
    padding: 1.5rem 1rem 1.25rem;
    text-align: center;
}
.course-dashboard-empty-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 4rem;
    height: 4rem;
    border-radius: 1.25rem;
    border: 1px solid rgba(148, 163, 184, 0.2);
}
.course-dashboard-empty-icon .material-symbols-outlined {
    font-size: 1.8rem;
}
.course-dashboard-empty-icon--blue {
    background: rgba(59, 130, 246, 0.08);
    color: #2563eb;
}
.course-dashboard-empty-icon--amber {
    background: rgba(251, 191, 36, 0.12);
    color: #d97706;
}
.course-dashboard-empty-icon--slate {
    background: rgba(148, 163, 184, 0.12);
    color: #475569;
}
.dark .course-dashboard-empty-icon--blue {
    background: rgba(59, 130, 246, 0.14);
    color: #93c5fd;
}
.dark .course-dashboard-empty-icon--amber {
    background: rgba(245, 158, 11, 0.16);
    color: #fbbf24;
}
.dark .course-dashboard-empty-icon--slate {
    background: rgba(71, 85, 105, 0.24);
    color: #cbd5e1;
}
.course-dashboard-empty-copy {
    max-width: 28rem;
    margin: 0;
    font-size: 1rem;
    line-height: 1.7;
    font-weight: 600;
    color: #475569;
}
.dark .course-dashboard-empty-copy {
    color: #cbd5e1;
}

.course-dashboard-rail-layout {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    align-items: start;
    gap: 1rem;
}
.course-fixed-rail-content {
    --course-fixed-rail-offset: 0rem;
}
.course-dashboard-rail-column {
    position: relative;
    z-index: 2;
}
.course-dashboard-rail-main {
    min-width: 0;
}
.course-dashboard-quick-rail-shell {
    width: 100%;
}
.course-dashboard-quick-rail {
    position: sticky;
    top: 5.75rem;
    width: 4.25rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.45rem;
    padding: 0.55rem 0.38rem 0.62rem;
    border-radius: 1rem;
    border: 1px solid rgba(226, 232, 240, 0.95);
    background: rgba(255, 255, 255, 0.9);
    box-shadow:
        0 1px 0 rgba(255, 255, 255, 0.88) inset,
        0 10px 28px -18px rgba(15, 23, 42, 0.14);
    backdrop-filter: blur(10px);
    overflow: visible;
    isolation: isolate;
    transition: border-color 0.18s ease, box-shadow 0.18s ease;
}
.dark .course-dashboard-quick-rail {
    border-color: rgba(51, 65, 85, 0.65);
    background: rgba(15, 23, 42, 0.92);
    box-shadow:
        0 1px 0 rgba(148, 163, 184, 0.06) inset,
        0 12px 28px -16px rgba(2, 6, 23, 0.55);
}
.course-dashboard-quick-rail:hover,
.course-dashboard-quick-rail:focus-within {
    border-color: rgba(203, 213, 225, 0.98);
    box-shadow:
        0 1px 0 rgba(255, 255, 255, 0.92) inset,
        0 12px 32px -16px rgba(15, 23, 42, 0.16);
}
.dark .course-dashboard-quick-rail:hover,
.dark .course-dashboard-quick-rail:focus-within {
    border-color: rgba(71, 85, 105, 0.85);
    box-shadow:
        0 1px 0 rgba(148, 163, 184, 0.08) inset,
        0 14px 34px -14px rgba(2, 6, 23, 0.62);
}
.course-dashboard-quick-rail__kicker {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 0.12rem 0.2rem 0.18rem;
    border-radius: 0;
    font-family: inherit;
    font-size: 0.5625rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    font-weight: 600;
    color: #94a3b8;
    background: transparent;
    border: none;
    box-shadow: none;
    position: relative;
    z-index: 1;
}
.dark .course-dashboard-quick-rail__kicker {
    color: #64748b;
    background: transparent;
    border: none;
    box-shadow: none;
}
.course-dashboard-quick-actions {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    align-items: center;
    width: 100%;
    position: relative;
    z-index: 1;
}
.course-dashboard-quick-action {
    position: relative;
    width: 100%;
    min-height: 2.85rem;
    padding: 0.38rem 0.28rem 0.42rem;
    border-radius: 0.72rem;
    border: 1px solid transparent;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    gap: 0.28rem;
    text-decoration: none;
    color: inherit;
    background: transparent;
    overflow: visible;
    transition: border-color 0.15s ease, background-color 0.15s ease;
}
.course-dashboard-quick-action:hover {
    border-color: rgba(226, 232, 240, 0.95);
    background: rgba(248, 250, 252, 0.95);
    box-shadow: none;
    transform: none;
}
.dark .course-dashboard-quick-action:hover {
    border-color: rgba(51, 65, 85, 0.72);
    background: rgba(30, 41, 59, 0.55);
}
.course-dashboard-quick-action:focus-visible {
    outline: 2px solid rgba(37, 99, 235, 0.9);
    outline-offset: 2px;
}
.course-dashboard-quick-action__icon-wrap {
    position: relative;
    width: 1.92rem;
    height: 1.92rem;
    border-radius: 0.62rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(226, 232, 240, 0.85);
    box-shadow: none;
    transition: border-color 0.15s ease, background-color 0.15s ease;
}
.dark .course-dashboard-quick-action__icon-wrap {
    border-color: rgba(51, 65, 85, 0.55);
}
.course-dashboard-quick-action__icon-wrap::after {
    display: none;
}
.course-dashboard-quick-action:hover .course-dashboard-quick-action__icon-wrap {
    transform: none;
    box-shadow: none;
    filter: none;
}
.course-dashboard-quick-action__label {
    position: absolute;
    left: calc(100% + 0.45rem);
    top: 50%;
    width: max-content;
    max-width: 12rem;
    max-height: none;
    opacity: 0;
    transform: translateY(-50%) translateX(-4px);
    margin-top: 0;
    padding: 0.28rem 0.52rem;
    border-radius: 0.45rem;
    border: 1px solid rgba(226, 232, 240, 0.98);
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 8px 24px -12px rgba(15, 23, 42, 0.2);
    text-align: center;
    line-height: 1.15;
    font-size: 0.625rem;
    font-weight: 600;
    letter-spacing: 0.01em;
    font-family: inherit;
    color: #334155;
    white-space: nowrap;
    pointer-events: none;
    z-index: 40;
    transition: opacity 0.15s ease, transform 0.15s ease;
}
.course-dashboard-quick-action__label::before {
    content: "";
    position: absolute;
    top: 50%;
    left: -0.28rem;
    width: 0.5rem;
    height: 0.5rem;
    transform: translateY(-50%) rotate(45deg);
    border-left: 1px solid rgba(226, 232, 240, 0.98);
    border-bottom: 1px solid rgba(226, 232, 240, 0.98);
    background: rgba(255, 255, 255, 0.98);
}
.dark .course-dashboard-quick-action__label {
    color: #e2e8f0;
    border-color: rgba(51, 65, 85, 0.85);
    background: rgba(30, 41, 59, 0.98);
    box-shadow: 0 8px 24px -12px rgba(2, 6, 23, 0.45);
}
.dark .course-dashboard-quick-action__label::before {
    border-left-color: rgba(51, 65, 85, 0.85);
    border-bottom-color: rgba(51, 65, 85, 0.85);
    background: rgba(30, 41, 59, 0.98);
}
.course-dashboard-quick-action:hover .course-dashboard-quick-action__label,
.course-dashboard-quick-action:focus-visible .course-dashboard-quick-action__label {
    opacity: 1;
    transform: translateY(-50%) translateX(0);
}
.course-dashboard-quick-action--promoted .course-dashboard-quick-action__icon-wrap {
    box-shadow: none;
}
.course-dashboard-quick-action.disabled,
.course-dashboard-quick-action[aria-disabled="true"] {
    opacity: 0.54;
    pointer-events: none;
    cursor: not-allowed;
}
.course-dashboard-quick-actions--skeleton {
    gap: 0.4rem;
}
.course-dashboard-quick-skeleton-item {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.28rem;
    padding: 0.18rem 0;
}
.course-dashboard-quick-skeleton-icon {
    width: 1.85rem;
    height: 1.85rem;
    border-radius: 0.62rem;
}
.course-dashboard-quick-skeleton-label {
    width: 2.4rem;
    height: 0.48rem;
    border-radius: 999px;
}

@media (min-width: 641px) {
    .course-fixed-rail-content {
        --course-fixed-rail-offset: clamp(7.35rem, 11.5vw, 9.75rem);
        padding-left: var(--course-fixed-rail-offset);
    }
    .course-dashboard-rail-layout {
        grid-template-columns: 0 minmax(0, 1fr);
        gap: 0;
    }
    .course-dashboard-rail-column {
        width: 0;
        min-width: 0;
    }
    .course-dashboard-quick-rail-shell {
        position: static;
        width: auto;
    }
    .course-dashboard-quick-rail {
        position: fixed;
        top: calc(5.2rem + env(safe-area-inset-top));
        left: max(0.85rem, env(safe-area-inset-left));
        z-index: 34;
    }
}

@media (max-width: 640px) {
    .course-dashboard-rail-layout {
        grid-template-columns: 1fr;
    }
    .course-dashboard-quick-rail {
        position: static;
        width: 100%;
        padding: 0.5rem 0.6rem 0.55rem;
        border-radius: 0.85rem;
    }
    .course-dashboard-quick-rail__kicker {
        width: auto;
        align-self: flex-start;
        padding-inline: 0;
        font-size: 0.54rem;
    }
    .course-dashboard-quick-actions {
        flex-direction: row;
        overflow-x: auto;
        overflow-y: hidden;
        align-items: stretch;
        padding-bottom: 0.1rem;
    }
    .course-dashboard-quick-action {
        min-width: 4.15rem;
        flex: 0 0 auto;
    }
    .course-dashboard-quick-action__label {
        position: static;
        width: 100%;
        max-width: none;
        max-height: none;
        padding: 0;
        border: none;
        border-radius: 0;
        background: transparent;
        box-shadow: none;
        opacity: 1;
        transform: none;
        white-space: normal;
        color: #334155;
        font-size: 0.62rem;
    }
    .course-dashboard-quick-action__label::before {
        display: none;
    }
    .dark .course-dashboard-quick-action__label {
        color: #e2e8f0;
        background: transparent;
        border: none;
        box-shadow: none;
    }
}

@media (max-width: 480px) {
    .course-dashboard-quick-rail {
        padding-inline: 0.55rem;
    }
    .course-dashboard-quick-actions {
        gap: 0.35rem;
    }
    .course-dashboard-quick-action {
        min-width: 3.85rem;
        padding-inline: 0.24rem;
    }
}

@media (max-width: 767px) {
    .course-dashboard-due-summary {
        align-items: stretch;
    }
    .course-dashboard-due-action {
        width: 100%;
        min-width: 0;
    }
    .course-dashboard-due-cta {
        width: 100%;
    }
    .course-dashboard-next-hero {
        flex-direction: column;
        align-items: stretch;
    }
    .course-dashboard-next-button {
        width: 100%;
        justify-content: center;
    }
    .course-dashboard-feature-title {
        font-size: 1.2rem;
    }
    .course-dashboard-feature-title--compact {
        font-size: 1rem;
    }
    .course-dashboard-empty-state {
        min-height: 11.5rem;
    }
    .course-entity-row {
        align-items: flex-start;
        flex-direction: column;
    }
    .course-entity-action {
        width: 100%;
    }
}

.course-module-card {
    border-radius: 1rem;
    border: 1px solid #e2e8f0;
    background: #ffffff;
    overflow: hidden;
    box-shadow: 0 18px 40px -34px rgba(15, 23, 42, 0.22);
    transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}
.course-module-card:hover {
    border-color: rgba(96, 165, 250, 0.45);
    box-shadow: 0 24px 44px -34px rgba(37, 99, 235, 0.28);
}
.dark .course-module-card {
    border-color: #1f2937;
    background: #161b22;
    box-shadow: 0 18px 40px -34px rgba(2, 6, 23, 0.6);
}
.dark .course-module-card:hover {
    border-color: rgba(59, 130, 246, 0.38);
}
.course-entity-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1rem;
    transition: background-color 0.2s ease, border-color 0.2s ease;
}
.course-entity-row--completed {
    background: rgba(240, 253, 244, 0.92);
}
.course-entity-row--next {
    background: rgba(239, 246, 255, 0.96);
    box-shadow: inset 0 0 0 2px rgba(37, 99, 235, 0.16);
}
.dark .course-entity-row--completed {
    background: rgba(20, 83, 45, 0.18);
}
.dark .course-entity-row--next {
    background: rgba(30, 58, 138, 0.16);
    box-shadow: inset 0 0 0 2px rgba(96, 165, 250, 0.2);
}
.course-entity-row:not(.course-entity-row--completed):not(.course-entity-row--next):hover {
    background-color: rgba(248, 250, 252, 0.9);
}
.dark .course-entity-row:not(.course-entity-row--completed):not(.course-entity-row--next):hover {
    background-color: rgba(30, 41, 59, 0.35);
}
.course-entity-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.8rem;
    height: 2.8rem;
    border-radius: 0.95rem;
    flex-shrink: 0;
    border: 1px solid rgba(148, 163, 184, 0.16);
}
.course-entity-icon--blue { color: #2563eb; background: rgba(219, 234, 254, 0.92); }
.course-entity-icon--green { color: #16a34a; background: rgba(220, 252, 231, 0.92); }
.course-entity-icon--purple { color: #9333ea; background: rgba(243, 232, 255, 0.92); }
.course-entity-icon--amber { color: #d97706; background: rgba(254, 243, 199, 0.94); }
.course-entity-icon--red { color: #dc2626; background: rgba(254, 226, 226, 0.92); }
.course-entity-icon--orange { color: #ea580c; background: rgba(255, 237, 213, 0.94); }
.course-entity-icon--slate { color: #475569; background: rgba(241, 245, 249, 0.96); }
.dark .course-entity-icon--blue { color: #93c5fd; background: rgba(30, 64, 175, 0.24); }
.dark .course-entity-icon--green { color: #86efac; background: rgba(22, 101, 52, 0.24); }
.dark .course-entity-icon--purple { color: #d8b4fe; background: rgba(88, 28, 135, 0.22); }
.dark .course-entity-icon--amber { color: #fcd34d; background: rgba(120, 53, 15, 0.24); }
.dark .course-entity-icon--red { color: #fca5a5; background: rgba(127, 29, 29, 0.24); }
.dark .course-entity-icon--orange { color: #fdba74; background: rgba(124, 45, 18, 0.24); }
.dark .course-entity-icon--slate { color: #cbd5e1; background: rgba(51, 65, 85, 0.35); }
.course-entity-type-pill,
.course-entity-state-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.26rem 0.58rem;
    border-radius: 999px;
    font-size: 0.72rem;
    font-weight: 700;
    line-height: 1;
    white-space: nowrap;
}
.course-entity-type-pill--blue { background: rgba(59, 130, 246, 0.12); color: #2563eb; }
.course-entity-type-pill--green { background: rgba(34, 197, 94, 0.14); color: #15803d; }
.course-entity-type-pill--purple { background: rgba(147, 51, 234, 0.12); color: #7e22ce; }
.course-entity-type-pill--amber { background: rgba(245, 158, 11, 0.15); color: #b45309; }
.course-entity-type-pill--red { background: rgba(239, 68, 68, 0.12); color: #b91c1c; }
.course-entity-type-pill--orange { background: rgba(249, 115, 22, 0.12); color: #c2410c; }
.course-entity-type-pill--slate { background: rgba(148, 163, 184, 0.16); color: #475569; }
.dark .course-entity-type-pill--blue { background: rgba(59, 130, 246, 0.18); color: #93c5fd; }
.dark .course-entity-type-pill--green { background: rgba(34, 197, 94, 0.16); color: #86efac; }
.dark .course-entity-type-pill--purple { background: rgba(147, 51, 234, 0.18); color: #d8b4fe; }
.dark .course-entity-type-pill--amber { background: rgba(245, 158, 11, 0.18); color: #fcd34d; }
.dark .course-entity-type-pill--red { background: rgba(239, 68, 68, 0.18); color: #fca5a5; }
.dark .course-entity-type-pill--orange { background: rgba(249, 115, 22, 0.18); color: #fdba74; }
.dark .course-entity-type-pill--slate { background: rgba(71, 85, 105, 0.24); color: #cbd5e1; }
.course-entity-state-pill--completed {
    background: rgba(34, 197, 94, 0.14);
    color: #15803d;
}
.course-entity-state-pill--next {
    background: rgba(59, 130, 246, 0.14);
    color: #1d4ed8;
}
.course-entity-state-pill--due {
    background: rgba(245, 158, 11, 0.16);
    color: #b45309;
}
.course-entity-state-pill--progress {
    background: rgba(59, 130, 246, 0.12);
    color: #2563eb;
}
.course-entity-state-pill--muted {
    background: rgba(148, 163, 184, 0.16);
    color: #475569;
}
.dark .course-entity-state-pill--completed { background: rgba(34, 197, 94, 0.18); color: #86efac; }
.dark .course-entity-state-pill--next { background: rgba(59, 130, 246, 0.2); color: #93c5fd; }
.dark .course-entity-state-pill--due { background: rgba(245, 158, 11, 0.2); color: #fcd34d; }
.dark .course-entity-state-pill--progress { background: rgba(59, 130, 246, 0.18); color: #93c5fd; }
.dark .course-entity-state-pill--muted { background: rgba(71, 85, 105, 0.28); color: #cbd5e1; }
.course-entity-action {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    min-width: 6.25rem;
    padding: 0.72rem 1rem;
    border-radius: 0.9rem;
    font-size: 0.9rem;
    font-weight: 700;
    line-height: 1;
    transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}
.course-entity-action--primary {
    color: #ffffff;
    background: #2563eb;
    box-shadow: 0 16px 28px -22px rgba(37, 99, 235, 0.58);
}
.course-entity-action--primary:hover {
    background: #1d4ed8;
}
.course-entity-action--secondary {
    color: #334155;
    background: rgba(248, 250, 252, 0.98);
    border: 1px solid rgba(203, 213, 225, 0.95);
}
.course-entity-action--secondary:hover {
    background: rgba(241, 245, 249, 0.98);
    border-color: rgba(148, 163, 184, 0.7);
}
.dark .course-entity-action--secondary {
    color: #e2e8f0;
    background: rgba(30, 41, 59, 0.9);
    border-color: rgba(71, 85, 105, 0.72);
}
.dark .course-entity-action--secondary:hover {
    background: rgba(51, 65, 85, 0.94);
}

/* Streak celebration animation (when daily goal met) */
.streak-celebration {
    animation: streak-pulse 0.6s ease-out 3;
}
@keyframes streak-pulse {
    0%, 100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(249, 115, 22, 0.4); }
    50% { transform: scale(1.03); box-shadow: 0 0 20px 4px rgba(249, 115, 22, 0.3); }
}

/* ---- Course catalog: curriculum tabs (/courses) ---- */
.courses-page-shell {
    background:
        radial-gradient(circle at top left, rgba(56, 189, 248, 0.14), transparent 26rem),
        radial-gradient(circle at top right, rgba(14, 165, 233, 0.09), transparent 22rem),
        linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(248, 250, 252, 0.96));
}
.dark .courses-page-shell {
    background:
        radial-gradient(circle at top left, rgba(14, 165, 233, 0.18), transparent 24rem),
        radial-gradient(circle at top right, rgba(59, 130, 246, 0.12), transparent 20rem),
        linear-gradient(180deg, rgba(13, 17, 23, 0.98), rgba(13, 17, 23, 0.94));
}
.courses-page-header {
    position: relative;
    overflow: hidden;
}
.courses-page-header::after {
    content: "";
    position: absolute;
    inset: auto 0 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(14, 165, 233, 0.32), transparent);
}
.courses-page-header-copy {
    max-width: 40rem;
}
.custom-course-studio {
    background:
        linear-gradient(180deg, rgba(240, 249, 255, 0.9), rgba(255, 255, 255, 0.98) 18rem),
        #ffffff;
    box-shadow: 0 30px 80px -48px rgba(15, 23, 42, 0.35);
}
.dark .custom-course-studio {
    background:
        linear-gradient(180deg, rgba(14, 165, 233, 0.12), rgba(15, 23, 42, 0.92) 18rem),
        #0f172a;
    box-shadow: 0 34px 90px -50px rgba(2, 6, 23, 0.8);
}
.custom-course-studio__hero {
    position: relative;
    overflow: hidden;
    border-bottom: 1px solid rgba(148, 163, 184, 0.18);
}
.custom-course-studio__hero::before,
.custom-course-studio__hero::after {
    content: "";
    position: absolute;
    border-radius: 999px;
    pointer-events: none;
}
.custom-course-studio__hero::before {
    width: 19rem;
    height: 19rem;
    right: -5rem;
    top: -8rem;
    background: radial-gradient(circle, rgba(56, 189, 248, 0.22), transparent 68%);
}
.custom-course-studio__hero::after {
    width: 14rem;
    height: 14rem;
    left: 46%;
    bottom: -7rem;
    background: radial-gradient(circle, rgba(14, 165, 233, 0.12), transparent 70%);
}
.custom-course-studio__hero-grid,
.custom-course-studio__body {
    position: relative;
    z-index: 1;
}
.custom-course-studio__body {
    transition: opacity 180ms ease, transform 180ms ease;
}
.custom-course-studio.is-collapsed .custom-course-studio__body {
    opacity: 0;
    transform: translateY(-6px);
}
.custom-course-studio__collapse-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.78rem 1rem;
    border-radius: 999px;
    border: 1px solid rgba(148, 163, 184, 0.28);
    background: rgba(255, 255, 255, 0.7);
    color: #0f172a;
    font-size: 0.88rem;
    font-weight: 700;
    backdrop-filter: blur(12px);
    transition: transform 180ms ease, border-color 180ms ease, background-color 180ms ease;
}
.custom-course-studio__collapse-toggle:hover {
    transform: translateY(-1px);
    border-color: rgba(14, 165, 233, 0.42);
}
.dark .custom-course-studio__collapse-toggle {
    background: rgba(15, 23, 42, 0.58);
    color: #e2e8f0;
    border-color: rgba(71, 85, 105, 0.58);
}
.custom-course-studio__hero-note {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    padding: 0.75rem 1rem;
    border-radius: 999px;
    font-size: 0.875rem;
    color: #0f172a;
    background: rgba(255, 255, 255, 0.68);
    border: 1px solid rgba(148, 163, 184, 0.24);
    backdrop-filter: blur(12px);
}
.dark .custom-course-studio__hero-note {
    color: #e2e8f0;
    background: rgba(15, 23, 42, 0.55);
    border-color: rgba(71, 85, 105, 0.45);
}
.custom-course-studio__summary-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0.9rem;
}
.custom-course-studio__summary-card {
    padding: 1rem 1.05rem;
    border-radius: 1.15rem;
    background: rgba(255, 255, 255, 0.74);
    border: 1px solid rgba(203, 213, 225, 0.8);
    backdrop-filter: blur(10px);
}
.dark .custom-course-studio__summary-card {
    background: rgba(15, 23, 42, 0.72);
    border-color: rgba(51, 65, 85, 0.9);
}
.custom-course-studio__summary-label {
    display: block;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: #64748b;
}
.custom-course-studio__summary-value {
    display: block;
    margin-top: 0.45rem;
    font-size: 1.7rem;
    line-height: 1;
    color: #0f172a;
}
.dark .custom-course-studio__summary-value {
    color: #f8fafc;
}
.custom-course-studio__summary-footnote {
    margin-top: 0.4rem;
    font-size: 0.82rem;
    color: #64748b;
}
.custom-course-studio__filters {
    display: flex;
    flex-wrap: wrap;
    gap: 0.65rem;
    margin-top: 1.15rem;
}
.custom-course-studio__filter {
    border: 1px solid rgba(148, 163, 184, 0.35);
    background: rgba(255, 255, 255, 0.7);
    color: #334155;
    font-size: 0.92rem;
    font-weight: 600;
    padding: 0.72rem 1rem;
    border-radius: 999px;
    transition: transform 180ms ease, background-color 180ms ease, border-color 180ms ease, color 180ms ease;
}
.custom-course-studio__filter:hover {
    transform: translateY(-1px);
    border-color: rgba(14, 165, 233, 0.4);
    color: #0f172a;
}
.custom-course-studio__filter.is-active {
    background: linear-gradient(135deg, #0f172a, #1d4ed8);
    border-color: transparent;
    color: #ffffff;
    box-shadow: 0 18px 30px -22px rgba(30, 64, 175, 0.95);
}
.dark .custom-course-studio__filter {
    background: rgba(15, 23, 42, 0.7);
    border-color: rgba(71, 85, 105, 0.78);
    color: #cbd5e1;
}
.dark .custom-course-studio__filter:hover {
    color: #f8fafc;
}
.custom-course-studio__loading {
    margin-top: 1.25rem;
}
.custom-course-studio__skeleton-grid,
.custom-course-studio__grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
}
.custom-course-studio__skeleton-card {
    min-height: 15rem;
    border-radius: 1.4rem;
    background:
        linear-gradient(90deg, rgba(226, 232, 240, 0.9), rgba(241, 245, 249, 1), rgba(226, 232, 240, 0.9));
    background-size: 200% 100%;
    animation: customCourseCardPulse 1.25s linear infinite;
    border: 1px solid rgba(226, 232, 240, 0.9);
}
.dark .custom-course-studio__skeleton-card {
    background:
        linear-gradient(90deg, rgba(30, 41, 59, 0.95), rgba(51, 65, 85, 0.9), rgba(30, 41, 59, 0.95));
    border-color: rgba(51, 65, 85, 0.9);
}
@keyframes customCourseCardPulse {
    from { background-position: 0% 0%; }
    to { background-position: -200% 0%; }
}
.custom-course-card {
    position: relative;
    padding: 1.15rem;
    border-radius: 1.45rem;
    border: 1px solid rgba(203, 213, 225, 0.8);
    background: rgba(255, 255, 255, 0.82);
    box-shadow: 0 18px 40px -32px rgba(15, 23, 42, 0.38);
    transition: transform 200ms ease, box-shadow 220ms ease, border-color 220ms ease;
}
.custom-course-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 26px 50px -34px rgba(15, 23, 42, 0.42);
}
.dark .custom-course-card {
    background: rgba(15, 23, 42, 0.82);
    border-color: rgba(51, 65, 85, 0.92);
    box-shadow: 0 20px 48px -34px rgba(2, 6, 23, 0.84);
}
.custom-course-card::before {
    content: "";
    position: absolute;
    inset: 0 auto 0 0;
    width: 4px;
    border-radius: 1.45rem 0 0 1.45rem;
    background: #94a3b8;
}
.custom-course-card--ready::before { background: linear-gradient(180deg, #10b981, #14b8a6); }
.custom-course-card--review::before { background: linear-gradient(180deg, #0ea5e9, #38bdf8); }
.custom-course-card--active::before { background: linear-gradient(180deg, #1d4ed8, #8b5cf6); }
.custom-course-card--failed::before { background: linear-gradient(180deg, #ef4444, #f97316); }
.custom-course-card__topline,
.custom-course-card__actions,
.custom-course-card__stats,
.custom-course-card__type-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.7rem;
}
.custom-course-card__topline {
    justify-content: space-between;
}
.custom-course-card__status {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    border-radius: 999px;
    padding: 0.42rem 0.72rem;
    font-size: 0.78rem;
    font-weight: 700;
}
.custom-course-card__timestamp {
    font-size: 0.82rem;
    color: #64748b;
}
.custom-course-card__title-row {
    margin-top: 0.95rem;
}
.custom-course-card__title {
    font-size: 1.18rem;
    line-height: 1.3;
    font-weight: 700;
    color: #0f172a;
}
.dark .custom-course-card__title {
    color: #f8fafc;
}
.custom-course-card__detail {
    margin-top: 0.4rem;
    font-size: 0.92rem;
    line-height: 1.5;
    color: #475569;
}
.dark .custom-course-card__detail {
    color: #cbd5e1;
}
.custom-course-card__stats {
    margin-top: 1rem;
    padding-top: 0.95rem;
    border-top: 1px solid rgba(226, 232, 240, 0.9);
}
.dark .custom-course-card__stats {
    border-top-color: rgba(51, 65, 85, 0.9);
}
.custom-course-card__stats > div {
    flex: 1 1 9rem;
}
.custom-course-card__stat-label,
.custom-course-card__detail-label {
    display: block;
    font-size: 0.72rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: #64748b;
    font-weight: 700;
}
.custom-course-card__stat-value {
    display: block;
    margin-top: 0.35rem;
    color: #0f172a;
    font-size: 0.96rem;
    font-weight: 700;
}
.dark .custom-course-card__stat-value {
    color: #f8fafc;
}
.custom-course-card__type-row {
    margin-top: 0.95rem;
}
.custom-course-card__type-chip {
    display: inline-flex;
    align-items: center;
    padding: 0.38rem 0.68rem;
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 600;
    background: rgba(226, 232, 240, 0.72);
    color: #334155;
}
.dark .custom-course-card__type-chip {
    background: rgba(30, 41, 59, 0.92);
    color: #cbd5e1;
}
.custom-course-card__actions {
    justify-content: space-between;
    margin-top: 1.1rem;
}
.custom-course-card__primary,
.custom-course-card__secondary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    border-radius: 0.95rem;
    padding: 0.78rem 1rem;
    font-size: 0.9rem;
    font-weight: 700;
    transition: transform 180ms ease, background-color 180ms ease, border-color 180ms ease;
}
.custom-course-card__primary {
    background: #0f172a;
    color: #ffffff;
}
.custom-course-card__primary:hover,
.custom-course-card__secondary:hover {
    transform: translateY(-1px);
}
.dark .custom-course-card__primary {
    background: #f8fafc;
    color: #0f172a;
}
.custom-course-card__secondary {
    border: 1px solid rgba(203, 213, 225, 0.8);
    color: #334155;
    background: rgba(255, 255, 255, 0.62);
}
.dark .custom-course-card__secondary {
    border-color: rgba(71, 85, 105, 0.9);
    color: #cbd5e1;
    background: rgba(15, 23, 42, 0.7);
}
.custom-course-card__details {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(226, 232, 240, 0.9);
}
.dark .custom-course-card__details {
    border-top-color: rgba(51, 65, 85, 0.9);
}
.custom-course-card__details-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.9rem;
}
.custom-course-card__detail-copy {
    margin-top: 0.25rem;
    font-size: 0.88rem;
    line-height: 1.5;
    color: #334155;
}
.dark .custom-course-card__detail-copy {
    color: #cbd5e1;
}
.custom-course-card__prompt {
    margin-top: 0.9rem;
}
.custom-course-studio__empty {
    padding: 1.25rem 0;
}
.custom-course-studio__empty-icon {
    width: 3.75rem;
    height: 3.75rem;
    margin: 0 auto;
    border-radius: 1.15rem;
    display: grid;
    place-items: center;
    background: rgba(224, 242, 254, 0.9);
    color: #0369a1;
}
.dark .custom-course-studio__empty-icon {
    background: rgba(8, 47, 73, 0.72);
    color: #7dd3fc;
}
#catalog-curriculum .catalog-curriculum-tab {
    color: #64748b;
    border-width: 1px;
    border-color: transparent;
    border-bottom: none;
}
#catalog-curriculum .catalog-curriculum-tab:hover {
    color: #0f172a;
    background-color: rgba(248, 250, 252, 0.85);
}
.dark #catalog-curriculum .catalog-curriculum-tab {
    color: #94a3b8;
}
.dark #catalog-curriculum .catalog-curriculum-tab:hover {
    color: #e2e8f0;
    background-color: rgba(30, 41, 59, 0.35);
}
#catalog-curriculum .catalog-curriculum-tab[aria-selected="true"] {
    color: #0f172a;
    background-color: #f8fafc;
    border-color: #e2e8f0 #e2e8f0 transparent;
    position: relative;
    z-index: 1;
    box-shadow: 0 1px 0 0 #f8fafc;
}
.dark #catalog-curriculum .catalog-curriculum-tab[aria-selected="true"] {
    color: #f8fafc;
    background-color: #0d1117;
    border-color: #334155 #334155 transparent;
    box-shadow: 0 1px 0 0 #0d1117;
}
@media (max-width: 1023px) {
    .custom-course-studio__summary-grid,
    .custom-course-studio__skeleton-grid,
    .custom-course-studio__grid {
        grid-template-columns: 1fr;
    }
}
@media (max-width: 767px) {
    .courses-page-header-actions {
        width: 100%;
    }
    .courses-page-header-actions > * {
        flex: 1 1 auto;
        justify-content: center;
    }
    .custom-course-studio__hero-actions {
        width: 100%;
    }
    .custom-course-studio__collapse-toggle,
    .custom-course-studio__hero-actions > [data-action-id="create-custom-course-open-hero"] {
        flex: 1 1 auto;
        justify-content: center;
    }
    .custom-course-studio__hero-note {
        width: 100%;
        justify-content: center;
        text-align: center;
        border-radius: 1rem;
    }
    .custom-course-card__details-grid {
        grid-template-columns: 1fr;
    }
    .custom-course-card__actions {
        flex-direction: column;
        align-items: stretch;
    }
    .custom-course-card__primary,
    .custom-course-card__secondary {
        justify-content: center;
    }
}

/* ============================================================
   DESIGN SYSTEM — Micro-Interaction & Utility Classes
   ============================================================ */

/* ---------- Shared timing function ---------- */
:root {
    --ease-interact: cubic-bezier(0.4, 0, 0.2, 1);
    --primary-rgb: 43, 140, 238;  /* #2b8cee */
}

/* ---------- .btn-interact — buttons ---------- */
.btn-interact {
    transition: transform 0.2s var(--ease-interact),
                box-shadow 0.2s var(--ease-interact),
                background-color 0.2s var(--ease-interact);
}
.btn-interact:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(var(--primary-rgb), 0.25);
}
.btn-interact:active:not(:disabled) {
    transform: translateY(0) scale(0.97);
    box-shadow: none;
}

/* ---------- .card-interact — cards ---------- */
.card-interact {
    transition: transform 0.25s var(--ease-interact),
                box-shadow 0.25s var(--ease-interact),
                border-color 0.25s var(--ease-interact);
}
.card-interact:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.08), 0 4px 8px rgba(0, 0, 0, 0.04);
}

/* ---------- .link-subtle — inline links ---------- */
.link-subtle {
    text-decoration: underline;
    text-decoration-color: transparent;
    text-underline-offset: 3px;
    transition: text-decoration-color 0.2s var(--ease-interact),
                color 0.2s var(--ease-interact);
}
.link-subtle:hover {
    text-decoration-color: currentColor;
}

/* ---------- .input-glow — form inputs ---------- */
.input-glow {
    transition: box-shadow 0.2s var(--ease-interact),
                border-color 0.2s var(--ease-interact);
}
.input-glow:focus {
    border-color: #2b8cee;
    box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.15);
    outline: none;
}

/* ---------- .badge-pop — badges / pills ---------- */
.badge-pop {
    transition: transform 0.15s var(--ease-interact);
}
.badge-pop:hover {
    transform: scale(1.05);
}

/* ---------- .icon-btn-interact — icon buttons ---------- */
.icon-btn-interact {
    transition: background-color 0.2s var(--ease-interact),
                transform 0.2s var(--ease-interact);
    border-radius: 0.375rem;
}
.icon-btn-interact:hover {
    background-color: rgba(0, 0, 0, 0.05);
    transform: scale(1.08);
}
.icon-btn-interact:active {
    transform: scale(0.95);
}
.dark .icon-btn-interact:hover {
    background-color: rgba(255, 255, 255, 0.08);
}

/* ---------- .stat-card-interact — stat cards ---------- */
.stat-card-interact {
    transition: border-color 0.2s var(--ease-interact),
                box-shadow 0.2s var(--ease-interact),
                transform 0.2s var(--ease-interact);
}
.stat-card-interact:hover {
    border-color: rgba(var(--primary-rgb), 0.3);
    box-shadow: 0 4px 12px rgba(var(--primary-rgb), 0.1);
    transform: translateY(-1px);
}

/* ---------- .fade-in — entrance animation ---------- */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}
.fade-in {
    animation: fadeInUp 0.3s ease-out both;
}

/* Keep the root page scroller free of transforms so fixed descendants
   (like the course quick-rail) stay anchored to the viewport. */
#main-content.fade-in {
    animation-name: mainFadeIn;
    transform: none !important;
}

@keyframes mainFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.fade-in-delay-1 { animation-delay: 0.05s; }
.fade-in-delay-2 { animation-delay: 0.1s; }
.fade-in-delay-3 { animation-delay: 0.15s; }
.fade-in-delay-4 { animation-delay: 0.2s; }

/* ---------- .float-gentle — decorative float ---------- */
@keyframes floatGentle {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-6px); }
}
.float-gentle {
    animation: floatGentle 3s ease-in-out infinite;
}

/* ---------- .progress-animate — animated progress bars ---------- */
.progress-animate {
    transition: width 0.8s var(--ease-interact);
}

/* ---------- .accordion-body — smooth expand/collapse ---------- */
.accordion-body {
    overflow: hidden;
    transition: max-height 0.3s var(--ease-interact),
                opacity 0.3s var(--ease-interact);
}

/* ---------- Touch target minimum (mobile) ---------- */
@media (pointer: coarse) {
    button, a, [role="button"], input[type="checkbox"], input[type="radio"], select {
        min-height: 44px;
        min-width: 44px;
    }
}

/* ---------- Smooth scrolling ---------- */
@media (prefers-reduced-motion: no-preference) {
    html {
        scroll-behavior: smooth;
    }
}

/* =========================================================================
   RESULTS LAYER — Quiz Analysis, All-In completed, Sprint-Off completed
   Tokens → base → components (.results-*) → utilities
   Concept: Coach debrief. Editorial, typography-led, restrained. Each mode
   keeps its signature element (Concept Constellation / Stake Ladder / Pace
   Tape). Works with Tailwind utilities for plumbing; identity lives here.
   ========================================================================= */

/* ---------- tokens ---------- */
:root {
    --results-bg: #f7f7f4;
    --results-surface: #ffffff;
    --results-surface-muted: #f2f2ef;
    --results-surface-raised: #fbfbf8;
    --results-ink: #101723;
    --results-ink-muted: #5b6572;
    --results-ink-subtle: #8a9099;
    --results-border: #e5e3dc;
    --results-border-strong: #cdcabd;
    --results-accent: #1f5fd8;
    --results-accent-soft: #e8f0ff;
    --results-positive: #1a7f5a;
    --results-positive-soft: #dff3e9;
    --results-warn: #a96a10;
    --results-warn-soft: #fbead0;
    --results-negative: #b3321f;
    --results-negative-soft: #fbe1dc;
    --results-skip: #6b7280;
    --results-skip-soft: #e7e8ea;
    --results-radius: 14px;
    --results-radius-sm: 10px;
    --results-radius-lg: 20px;
    --results-shadow-soft: 0 30px 60px -40px rgba(16, 23, 35, 0.18);
    --results-shadow-edge: 0 1px 0 0 rgba(16, 23, 35, 0.04), 0 0 0 1px rgba(16, 23, 35, 0.04);
    --results-ease: cubic-bezier(0.4, 0, 0.2, 1);
    --results-dur: 180ms;
    --results-display: 'Lexend', 'Noto Sans', system-ui, sans-serif;
    --results-mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

.dark {
    --results-bg: #0c1117;
    --results-surface: #141b24;
    --results-surface-muted: #10161d;
    --results-surface-raised: #18202b;
    --results-ink: #e8eaee;
    --results-ink-muted: #a3acb8;
    --results-ink-subtle: #6c7480;
    --results-border: #222a35;
    --results-border-strong: #32404f;
    --results-accent: #5ba3f5;
    --results-accent-soft: rgba(91, 163, 245, 0.14);
    --results-positive: #49c795;
    --results-positive-soft: rgba(73, 199, 149, 0.14);
    --results-warn: #e0a24b;
    --results-warn-soft: rgba(224, 162, 75, 0.14);
    --results-negative: #f17667;
    --results-negative-soft: rgba(241, 118, 103, 0.14);
    --results-skip: #8b95a2;
    --results-skip-soft: rgba(139, 149, 162, 0.14);
    --results-shadow-soft: 0 30px 60px -40px rgba(0, 0, 0, 0.6);
    --results-shadow-edge: 0 0 0 1px rgba(255, 255, 255, 0.04);
}

/* ---------- shell + base ---------- */
.results-shell {
    font-family: var(--results-display);
    color: var(--results-ink);
    background: var(--results-bg);
    min-height: 100vh;
    padding: clamp(1rem, 2.5vw, 2.25rem) clamp(1rem, 4vw, 2.75rem) 4rem;
}

.results-shell * { font-feature-settings: "ss01" on, "cv01" on; }

.results-container {
    max-width: 1180px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: clamp(1.25rem, 2vw, 1.75rem);
}

.results-breadcrumbs {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8125rem;
    color: var(--results-ink-muted);
}
.results-breadcrumbs a {
    color: inherit;
    text-decoration: none;
    transition: color var(--results-dur) var(--results-ease);
}
.results-breadcrumbs a:hover { color: var(--results-accent); }
.results-breadcrumbs span[aria-hidden="true"] { color: var(--results-ink-subtle); }

/* ---------- hero ---------- */
.results-hero {
    background: var(--results-surface);
    border: 1px solid var(--results-border);
    border-radius: var(--results-radius-lg);
    padding: clamp(1.5rem, 3vw, 2.25rem);
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 1.5rem;
    box-shadow: var(--results-shadow-edge);
}

.results-hero__eyebrow {
    font-size: 0.6875rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--results-ink-subtle);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.55rem;
}
.results-hero__eyebrow::before {
    content: "";
    width: 18px; height: 1px;
    background: currentColor;
    opacity: 0.6;
}

.results-hero__title {
    font-size: clamp(1.75rem, 3.2vw, 2.5rem);
    line-height: 1.08;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--results-ink);
    margin: 0.35rem 0 0.25rem;
}

.results-hero__sub {
    color: var(--results-ink-muted);
    font-size: 0.9375rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem 0.9rem;
    align-items: center;
}
.results-hero__sub .dot {
    width: 3px; height: 3px; border-radius: 999px;
    background: var(--results-ink-subtle);
    display: inline-block;
}

.results-hero__top {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
}

.results-hero__actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.results-metrics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1px;
    background: var(--results-border);
    border-radius: var(--results-radius);
    overflow: hidden;
    border: 1px solid var(--results-border);
}

.results-metric {
    background: var(--results-surface);
    padding: 1.1rem 1.25rem 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    position: relative;
}

.results-metric__label {
    font-size: 0.6875rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--results-ink-subtle);
    font-weight: 600;
}

.results-metric__value {
    font-family: var(--results-display);
    font-size: clamp(1.6rem, 2.4vw, 2rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1;
    color: var(--results-ink);
    display: flex;
    align-items: baseline;
    gap: 0.35rem;
}
.results-metric__value small {
    font-size: 0.75em;
    color: var(--results-ink-muted);
    font-weight: 600;
    letter-spacing: 0;
}
.results-metric__delta {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--results-ink-muted);
}
.results-metric__delta--up { color: var(--results-positive); }
.results-metric__delta--down { color: var(--results-negative); }
.results-metric__delta--flat { color: var(--results-ink-muted); }

.results-metric__bar {
    position: absolute;
    left: 0; right: 0; bottom: 0;
    height: 3px;
    background: var(--results-border);
}
.results-metric__bar::after {
    content: "";
    display: block;
    height: 100%;
    width: var(--fill, 0%);
    background: var(--results-accent);
    transition: width 0.8s var(--results-ease);
}
.results-metric--positive .results-metric__bar::after { background: var(--results-positive); }
.results-metric--warn .results-metric__bar::after { background: var(--results-warn); }
.results-metric--negative .results-metric__bar::after { background: var(--results-negative); }

/* ---------- verdict chip ---------- */
.results-verdict {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.3rem 0.75rem;
    border-radius: 999px;
    font-size: 0.8125rem;
    font-weight: 600;
    background: var(--results-surface-muted);
    color: var(--results-ink);
    border: 1px solid var(--results-border);
}
.results-verdict::before {
    content: "";
    width: 7px; height: 7px;
    border-radius: 999px;
    background: var(--results-ink-subtle);
}
.results-verdict--pass-strong { background: var(--results-positive-soft); color: var(--results-positive); border-color: transparent; }
.results-verdict--pass-strong::before { background: var(--results-positive); }
.results-verdict--pass-marginal { background: var(--results-warn-soft); color: var(--results-warn); border-color: transparent; }
.results-verdict--pass-marginal::before { background: var(--results-warn); }
.results-verdict--fail-close { background: var(--results-warn-soft); color: var(--results-warn); border-color: transparent; }
.results-verdict--fail-close::before { background: var(--results-warn); }
.results-verdict--fail-far { background: var(--results-negative-soft); color: var(--results-negative); border-color: transparent; }
.results-verdict--fail-far::before { background: var(--results-negative); }

/* ---------- cards ---------- */
.results-card {
    background: var(--results-surface);
    border: 1px solid var(--results-border);
    border-radius: var(--results-radius);
    padding: clamp(1.1rem, 2vw, 1.5rem);
    box-shadow: var(--results-shadow-edge);
    display: flex;
    flex-direction: column;
    gap: 1rem;
}
.results-card--muted { background: var(--results-surface-muted); }

.results-card__kicker {
    font-size: 0.6875rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--results-ink-subtle);
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
}

.results-card__title {
    font-size: 1.0625rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    color: var(--results-ink);
    margin: 0;
}

.results-card__body {
    color: var(--results-ink-muted);
    font-size: 0.9375rem;
    line-height: 1.55;
}

.results-card__link {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--results-accent);
    text-decoration: none;
}
.results-card__link:hover { text-decoration: underline; }

/* ---------- AI Coach card ---------- */
.results-ai-coach {
    background:
        radial-gradient(circle at 0% 0%, var(--results-accent-soft) 0%, transparent 55%),
        var(--results-surface);
    border: 1px solid var(--results-border);
    border-radius: var(--results-radius-lg);
    padding: clamp(1.25rem, 2.4vw, 1.75rem);
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    gap: clamp(0.85rem, 1.5vw, 1.25rem);
    box-shadow: var(--results-shadow-soft);
    position: relative;
    overflow: hidden;
}
.results-ai-coach::after {
    content: "";
    position: absolute;
    inset: -1px;
    pointer-events: none;
    border-radius: inherit;
    box-shadow: inset 0 0 0 1px rgba(31, 95, 216, 0.1);
}
.results-ai-coach__avatar {
    width: 44px; height: 44px;
    border-radius: 12px;
    background: var(--results-accent);
    color: #fff;
    display: grid;
    place-items: center;
    font-weight: 700;
    font-size: 1.05rem;
    letter-spacing: -0.02em;
    flex-shrink: 0;
    box-shadow: 0 10px 20px -10px rgba(31, 95, 216, 0.5);
}
.results-ai-coach__body { min-width: 0; display: flex; flex-direction: column; gap: 0.75rem; }
.results-ai-coach__badge {
    font-size: 0.6875rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--results-accent);
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}
.results-ai-coach__badge::before {
    content: "";
    width: 5px; height: 5px;
    border-radius: 999px;
    background: var(--results-accent);
    box-shadow: 0 0 0 3px var(--results-accent-soft);
}
.results-ai-coach__narrative {
    font-size: 1.0625rem;
    line-height: 1.55;
    color: var(--results-ink);
    letter-spacing: -0.005em;
    margin: 0;
}
.results-ai-coach__narrative strong {
    background: linear-gradient(180deg, transparent 62%, var(--results-accent-soft) 62%);
    font-weight: 600;
    padding: 0 2px;
}
.results-ai-coach__narrative em {
    color: var(--results-negative);
    font-style: normal;
    font-weight: 600;
    background: linear-gradient(180deg, transparent 62%, var(--results-negative-soft) 62%);
    padding: 0 2px;
}
.results-ai-coach__chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}
.results-ai-coach__tip {
    margin-top: 0.35rem;
    padding: 0.6rem 0.75rem;
    border-left: 2px solid var(--results-accent);
    background: var(--results-surface-muted);
    border-radius: 0 var(--results-radius-sm) var(--results-radius-sm) 0;
    font-size: 0.875rem;
    color: var(--results-ink-muted);
}
.results-ai-coach__tip::before {
    content: "Coach tip · ";
    color: var(--results-accent);
    font-weight: 700;
}

/* ---------- chips ---------- */
.results-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.25rem 0.6rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
    background: var(--results-surface-muted);
    color: var(--results-ink);
    border: 1px solid var(--results-border);
    letter-spacing: -0.005em;
    white-space: nowrap;
}
.results-chip strong {
    color: var(--results-ink-muted);
    font-weight: 700;
    margin-right: 0.15rem;
}
.results-chip--positive { background: var(--results-positive-soft); color: var(--results-positive); border-color: transparent; }
.results-chip--positive strong { color: var(--results-positive); opacity: 0.75; }
.results-chip--warn { background: var(--results-warn-soft); color: var(--results-warn); border-color: transparent; }
.results-chip--warn strong { color: var(--results-warn); opacity: 0.75; }
.results-chip--negative { background: var(--results-negative-soft); color: var(--results-negative); border-color: transparent; }
.results-chip--negative strong { color: var(--results-negative); opacity: 0.75; }
.results-chip--muted { color: var(--results-ink-muted); }
.results-chip--accent { background: var(--results-accent-soft); color: var(--results-accent); border-color: transparent; }

/* ---------- topic mastery bars ---------- */
.results-bar-group {
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
}
.results-bar-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: baseline;
    gap: 0.75rem;
    font-size: 0.875rem;
}
.results-bar-row__label {
    color: var(--results-ink);
    font-weight: 500;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.results-bar-row__value {
    font-family: var(--results-mono);
    font-size: 0.8125rem;
    color: var(--results-ink-muted);
    font-weight: 600;
}
.results-bar-row__value strong {
    color: var(--results-ink);
    font-weight: 700;
    margin-right: 0.35rem;
}
.results-bar {
    grid-column: 1 / -1;
    height: 6px;
    background: var(--results-surface-muted);
    border-radius: 999px;
    overflow: hidden;
    position: relative;
}
.results-bar__fill {
    display: block;
    height: 100%;
    width: var(--pct, 0%);
    background: var(--results-accent);
    border-radius: inherit;
    transition: width 0.9s var(--results-ease);
}
.results-bar--high .results-bar__fill { background: var(--results-positive); }
.results-bar--good .results-bar__fill { background: #3aa06f; }
.results-bar--average .results-bar__fill { background: var(--results-warn); }
.results-bar--low .results-bar__fill { background: var(--results-negative); }
.results-bar-row__band {
    font-size: 0.6875rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    font-weight: 700;
    color: var(--results-ink-subtle);
}
.results-bar-row--high .results-bar-row__band { color: var(--results-positive); }
.results-bar-row--good .results-bar-row__band { color: #3aa06f; }
.results-bar-row--average .results-bar-row__band { color: var(--results-warn); }
.results-bar-row--low .results-bar-row__band { color: var(--results-negative); }

/* ---------- response distribution ---------- */
.results-dist {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}
.results-dist__total {
    display: flex;
    height: 10px;
    border-radius: 999px;
    overflow: hidden;
    background: var(--results-surface-muted);
    border: 1px solid var(--results-border);
}
.results-dist__total > span {
    display: block;
    min-width: 2px;
    height: 100%;
    transition: width 0.9s var(--results-ease);
}
.results-dist__total > span.is-correct { background: var(--results-positive); }
.results-dist__total > span.is-incorrect { background: var(--results-negative); }
.results-dist__total > span.is-skipped { background: var(--results-skip); }
.results-dist__total > span.is-timeout { background: var(--results-warn); }
.results-dist__total > span.is-hint { background: var(--results-accent); }

.results-dist__legend {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
    gap: 0.5rem 1rem;
}
.results-dist__row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8125rem;
    color: var(--results-ink-muted);
}
.results-dist__swatch {
    width: 10px; height: 10px;
    border-radius: 3px;
    flex-shrink: 0;
    background: var(--results-ink-subtle);
}
.results-dist__row.is-correct .results-dist__swatch { background: var(--results-positive); }
.results-dist__row.is-incorrect .results-dist__swatch { background: var(--results-negative); }
.results-dist__row.is-skipped .results-dist__swatch { background: var(--results-skip); }
.results-dist__row.is-timeout .results-dist__swatch { background: var(--results-warn); }
.results-dist__row.is-hint .results-dist__swatch { background: var(--results-accent); }
.results-dist__row strong {
    color: var(--results-ink);
    font-weight: 700;
    font-family: var(--results-mono);
    margin-left: auto;
}

/* ---------- recommendation cards ---------- */
.results-rec-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 0.75rem;
}
.results-rec-card {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    padding: 0.9rem 1rem;
    border: 1px solid var(--results-border);
    border-radius: var(--results-radius);
    background: var(--results-surface);
    color: inherit;
    text-decoration: none;
    transition: border-color var(--results-dur) var(--results-ease),
                transform var(--results-dur) var(--results-ease),
                box-shadow var(--results-dur) var(--results-ease);
    position: relative;
    min-height: 72px;
}
.results-rec-card:hover {
    border-color: var(--results-border-strong);
    transform: translateY(-1px);
    box-shadow: var(--results-shadow-soft);
}
.results-rec-card:focus-visible {
    outline: 2px solid var(--results-accent);
    outline-offset: 2px;
}
.results-rec-card__icon {
    width: 40px; height: 40px;
    flex-shrink: 0;
    border-radius: 10px;
    display: grid;
    place-items: center;
    background: var(--results-accent-soft);
    color: var(--results-accent);
}
.results-rec-card__icon .material-symbols-outlined { font-size: 22px; }
.results-rec-card--flashcards .results-rec-card__icon { background: var(--results-warn-soft); color: var(--results-warn); }
.results-rec-card--video .results-rec-card__icon { background: var(--results-negative-soft); color: var(--results-negative); }
.results-rec-card--revision .results-rec-card__icon { background: var(--results-positive-soft); color: var(--results-positive); }
.results-rec-card__body { min-width: 0; flex: 1; }
.results-rec-card__kicker {
    font-size: 0.6875rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--results-ink-subtle);
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}
.results-rec-card__kicker .dot {
    width: 3px; height: 3px; border-radius: 999px; background: currentColor;
}
.results-rec-card__title {
    font-size: 0.9375rem;
    font-weight: 700;
    color: var(--results-ink);
    margin: 0.2rem 0 0.1rem;
    letter-spacing: -0.01em;
}
.results-rec-card__sub {
    font-size: 0.8125rem;
    color: var(--results-ink-muted);
    margin: 0;
}
.results-rec-card__arrow {
    margin-left: auto;
    color: var(--results-ink-subtle);
    transition: transform var(--results-dur) var(--results-ease), color var(--results-dur) var(--results-ease);
}
.results-rec-card:hover .results-rec-card__arrow { transform: translateX(2px); color: var(--results-accent); }

/* ---------- detailed review ---------- */
.results-review-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 0.5rem;
}
.results-review-head h2 {
    font-size: 1.375rem;
    font-weight: 700;
    letter-spacing: -0.015em;
    margin: 0;
}
.results-review-filter {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8125rem;
    color: var(--results-ink-muted);
}
.results-review-filter select {
    font-family: inherit;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--results-ink);
    background: var(--results-surface);
    border: 1px solid var(--results-border);
    border-radius: 999px;
    padding: 0.3rem 0.8rem;
    cursor: pointer;
    transition: border-color var(--results-dur) var(--results-ease);
}
.results-review-filter select:hover { border-color: var(--results-border-strong); }
.results-review-filter select:focus-visible { outline: 2px solid var(--results-accent); outline-offset: 2px; }

.results-review {
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
    list-style: none;
    margin: 0;
    padding: 0;
}
.results-review__item {
    background: var(--results-surface);
    border: 1px solid var(--results-border);
    border-radius: var(--results-radius);
    overflow: hidden;
    transition: border-color var(--results-dur) var(--results-ease);
}
.results-review__item[open] { border-color: var(--results-border-strong); }
.results-review__item[hidden] { display: none; }
.results-review__summary {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto auto;
    align-items: center;
    gap: 0.85rem;
    padding: 0.9rem 1rem;
    cursor: pointer;
    list-style: none;
    color: var(--results-ink);
}
.results-review__summary::-webkit-details-marker { display: none; }
.results-review__summary:hover { background: var(--results-surface-raised); }
.results-review__summary:focus-visible { outline: 2px solid var(--results-accent); outline-offset: -2px; }

.results-review__tag {
    width: 32px; height: 32px;
    border-radius: 10px;
    background: var(--results-surface-muted);
    color: var(--results-ink-subtle);
    display: grid;
    place-items: center;
    font-weight: 700;
    font-size: 0.75rem;
    font-family: var(--results-mono);
    flex-shrink: 0;
}
.results-review__item--correct .results-review__tag { background: var(--results-positive-soft); color: var(--results-positive); }
.results-review__item--incorrect .results-review__tag { background: var(--results-negative-soft); color: var(--results-negative); }
.results-review__item--skipped .results-review__tag { background: var(--results-skip-soft); color: var(--results-skip); }
.results-review__item--timeout .results-review__tag { background: var(--results-warn-soft); color: var(--results-warn); }

.results-review__prompt {
    min-width: 0;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--results-ink);
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    text-overflow: ellipsis;
    letter-spacing: -0.005em;
}

.results-review__meta {
    font-size: 0.75rem;
    color: var(--results-ink-subtle);
    font-family: var(--results-mono);
    white-space: nowrap;
}

.results-review__chevron {
    color: var(--results-ink-subtle);
    transition: transform var(--results-dur) var(--results-ease);
}
.results-review__item[open] .results-review__chevron { transform: rotate(180deg); }

.results-review__panel {
    padding: 0 1rem 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
    border-top: 1px solid var(--results-border);
}
.results-review__panel-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 0.5rem;
    padding-top: 0.85rem;
}
.results-review__answer {
    padding: 0.65rem 0.8rem;
    border-radius: var(--results-radius-sm);
    border: 1px solid var(--results-border);
    font-size: 0.875rem;
    color: var(--results-ink);
    background: var(--results-surface);
}
.results-review__answer strong {
    display: block;
    font-size: 0.6875rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--results-ink-subtle);
    font-weight: 700;
    margin-bottom: 0.35rem;
}
.results-review__answer--yours {
    background: var(--results-negative-soft);
    border-color: transparent;
    color: var(--results-negative);
}
.results-review__answer--yours strong { color: var(--results-negative); opacity: 0.75; }
.results-review__answer--correct {
    background: var(--results-positive-soft);
    border-color: transparent;
    color: var(--results-positive);
}
.results-review__answer--correct strong { color: var(--results-positive); opacity: 0.75; }
.results-review__explain {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding: 0.75rem 0.85rem;
    background: var(--results-accent-soft);
    border-radius: var(--results-radius-sm);
    font-size: 0.875rem;
    color: var(--results-ink);
    line-height: 1.55;
}
.results-review__explain-head {
    font-size: 0.6875rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--results-accent);
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}
.results-review__actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    padding-top: 0.25rem;
}
.results-review__action {
    font-family: inherit;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--results-accent);
    background: transparent;
    border: 1px solid var(--results-border);
    padding: 0.35rem 0.75rem;
    border-radius: 999px;
    cursor: pointer;
    transition: background var(--results-dur) var(--results-ease),
                border-color var(--results-dur) var(--results-ease);
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
}
.results-review__action:hover { background: var(--results-accent-soft); border-color: transparent; }
.results-review__action[disabled] { opacity: 0.5; cursor: not-allowed; }
.results-review__action.is-active { background: var(--results-accent); color: #fff; border-color: transparent; }
.results-review__action:focus-visible { outline: 2px solid var(--results-accent); outline-offset: 2px; }

.results-review__loadmore {
    align-self: center;
    margin-top: 0.75rem;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--results-ink-muted);
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.5rem 0.75rem;
    border-radius: 999px;
}
.results-review__loadmore:hover { background: var(--results-surface-muted); color: var(--results-ink); }

/* ---------- layout grid ---------- */
.results-grid {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: clamp(0.85rem, 1.5vw, 1.25rem);
}
.results-grid > .col-7 { grid-column: span 7 / span 7; }
.results-grid > .col-5 { grid-column: span 5 / span 5; }
.results-grid > .col-6 { grid-column: span 6 / span 6; }
.results-grid > .col-12 { grid-column: span 12 / span 12; }

@media (max-width: 880px) {
    .results-grid > [class^="col-"] { grid-column: span 12 / span 12; }
    .results-hero__top { flex-direction: column; align-items: stretch; }
    .results-ai-coach { grid-template-columns: 1fr; }
    .results-ai-coach__avatar { display: none; }
    .results-review__panel-row { grid-template-columns: 1fr; }
}

/* ---------- empty / skeleton ---------- */
.results-empty {
    padding: 1.25rem;
    border: 1px dashed var(--results-border-strong);
    border-radius: var(--results-radius);
    color: var(--results-ink-muted);
    font-size: 0.875rem;
    text-align: center;
    background: var(--results-surface-muted);
}
.results-skeleton {
    background: linear-gradient(90deg,
        var(--results-surface-muted) 0%,
        var(--results-border) 50%,
        var(--results-surface-muted) 100%);
    background-size: 200% 100%;
    animation: resultsShimmer 1.4s linear infinite;
    border-radius: var(--results-radius-sm);
    min-height: 1em;
}
@keyframes resultsShimmer {
    from { background-position: 100% 0; }
    to { background-position: -100% 0; }
}

/* ---------- buttons ---------- */
.results-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.55rem 0.95rem;
    font-family: inherit;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--results-ink);
    background: var(--results-surface);
    border: 1px solid var(--results-border);
    border-radius: 999px;
    cursor: pointer;
    text-decoration: none;
    transition: border-color var(--results-dur) var(--results-ease),
                background var(--results-dur) var(--results-ease),
                transform var(--results-dur) var(--results-ease);
}
.results-btn:hover { border-color: var(--results-border-strong); background: var(--results-surface-raised); }
.results-btn:focus-visible { outline: 2px solid var(--results-accent); outline-offset: 2px; }
.results-btn--primary {
    background: var(--results-ink);
    color: var(--results-surface);
    border-color: var(--results-ink);
}
.results-btn--primary:hover { background: #000; border-color: #000; color: #fff; }
.results-btn--accent {
    background: var(--results-accent);
    color: #fff;
    border-color: var(--results-accent);
}
.results-btn--accent:hover { filter: brightness(1.05); }
.results-btn--ghost {
    background: transparent;
    border-color: transparent;
    color: var(--results-ink-muted);
}
.results-btn--ghost:hover { background: var(--results-surface-muted); color: var(--results-ink); }

/* ---------- mode-signature components ---------- */

/* Quiz — Concept Constellation */
.results-constellation {
    width: 100%;
    aspect-ratio: 2 / 1;
    background: radial-gradient(circle at 30% 30%, var(--results-accent-soft), transparent 60%),
                var(--results-surface);
    border-radius: var(--results-radius);
    border: 1px solid var(--results-border);
    display: block;
    overflow: hidden;
}
.results-constellation__node {
    cursor: pointer;
    transition: transform var(--results-dur) var(--results-ease), filter var(--results-dur) var(--results-ease);
    transform-origin: center;
    transform-box: fill-box;
}
.results-constellation__node:hover,
.results-constellation__node.is-active { transform: scale(1.08); filter: brightness(1.05); }
.results-constellation__edge { stroke: var(--results-border-strong); stroke-width: 1; opacity: 0.55; }
.results-constellation__label {
    font-family: var(--results-display);
    font-size: 10px;
    fill: var(--results-ink-muted);
    font-weight: 600;
    pointer-events: none;
}

/* All-In — Stake Ladder */
.results-stake-ladder { width: 100%; display: block; }
.results-stake-ladder .rung-track { stroke: var(--results-border); stroke-width: 1; }
.results-stake-ladder .rung-pool { stroke: var(--results-accent); stroke-width: 1.5; fill: none; }
.results-stake-ladder .rung-stake { stroke: var(--results-border-strong); stroke-width: 1; }
.results-stake-ladder .rung-marker--correct { fill: var(--results-positive); }
.results-stake-ladder .rung-marker--wrong { fill: var(--results-negative); }
.results-stake-ladder .rung-label {
    font-family: var(--results-mono);
    font-size: 10px;
    fill: var(--results-ink-subtle);
}

/* Sprint-Off — Pace Tape */
.results-pace-tape {
    display: grid;
    grid-auto-flow: column;
    grid-auto-columns: minmax(18px, 1fr);
    gap: 3px;
    height: 120px;
    align-items: end;
    padding: 0.5rem;
    background: var(--results-surface);
    border: 1px solid var(--results-border);
    border-radius: var(--results-radius);
}
.results-pace-tape__cell {
    position: relative;
    background: var(--results-surface-muted);
    border-radius: 4px 4px 0 0;
    height: 100%;
    cursor: pointer;
    transition: transform var(--results-dur) var(--results-ease);
}
.results-pace-tape__cell::after {
    content: "";
    position: absolute;
    left: 0; right: 0; bottom: 0;
    height: var(--pct, 0%);
    background: var(--results-accent);
    border-radius: inherit;
    transition: height 0.9s var(--results-ease);
}
.results-pace-tape__cell.is-correct::after { background: var(--results-positive); }
.results-pace-tape__cell.is-incorrect::after { background: var(--results-negative); }
.results-pace-tape__cell.is-timeout::after { background: var(--results-warn); }
.results-pace-tape__cell.is-skipped::after { background: var(--results-skip); }
.results-pace-tape__cell:hover { transform: translateY(-2px); }
.results-pace-tape__cell:focus-visible { outline: 2px solid var(--results-accent); outline-offset: 2px; }
.results-pace-tape__legend {
    display: flex;
    gap: 0.75rem;
    font-size: 0.75rem;
    color: var(--results-ink-muted);
    padding: 0 0.5rem;
}

/* ---------- sparklines (time per question) ---------- */
.results-spark { width: 100%; height: 42px; display: block; }
.results-spark__line { fill: none; stroke: var(--results-accent); stroke-width: 1.6; }
.results-spark__area { fill: var(--results-accent-soft); }
.results-spark__marker { fill: var(--results-accent); }

/* ---------- pattern/weakness callouts ---------- */
.results-callout-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 0.6rem;
}
.results-callout {
    padding: 0.75rem 0.9rem;
    border: 1px solid var(--results-border);
    border-left-width: 3px;
    border-radius: var(--results-radius-sm);
    background: var(--results-surface);
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}
.results-callout--strength { border-left-color: var(--results-positive); }
.results-callout--weakness { border-left-color: var(--results-negative); }
.results-callout--pattern { border-left-color: var(--results-warn); }
.results-callout__kicker {
    font-size: 0.6875rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    font-weight: 700;
    color: var(--results-ink-subtle);
}
.results-callout__title { font-size: 0.9rem; font-weight: 700; color: var(--results-ink); margin: 0; }
.results-callout__body { font-size: 0.8125rem; color: var(--results-ink-muted); margin: 0; }

/* ---------- focus ring global ---------- */
.results-shell a:focus-visible,
.results-shell button:focus-visible,
.results-shell [tabindex]:focus-visible {
    outline: 2px solid var(--results-accent);
    outline-offset: 2px;
    border-radius: 4px;
}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
    .results-metric__bar::after,
    .results-bar__fill,
    .results-dist__total > span,
    .results-pace-tape__cell::after,
    .results-rec-card,
    .results-review__chevron,
    .results-skeleton {
        transition: none !important;
        animation: none !important;
    }
}

/* =========================================================================
   RESULTS LAYER — layout helpers used by the new templates
   ========================================================================= */

.results-backbar {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    margin: 0 0 0.9rem;
    font-size: 0.8125rem;
}
.results-backbar__link {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    color: var(--results-ink-muted);
    text-decoration: none;
    padding: 0.35rem 0.6rem;
    border-radius: 999px;
    border: 1px solid transparent;
    transition: background var(--results-dur) var(--results-ease),
                border-color var(--results-dur) var(--results-ease);
}
.results-backbar__link:hover {
    background: var(--results-surface-muted);
    border-color: var(--results-border);
    color: var(--results-ink);
}

.results-notice {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    padding: 0.7rem 0.95rem;
    margin: 0.75rem 0 1rem;
    border: 1px solid var(--results-border);
    border-radius: var(--results-radius);
    background: var(--results-accent-soft);
    color: var(--results-ink);
    font-size: 0.875rem;
}
.results-notice .material-symbols-outlined { color: var(--results-accent); font-size: 20px; }
.results-notice > span:nth-child(2) { flex: 1 1 auto; }

/* The primary+side column layout used by the quiz page (and challenge pages). */
.results-grid--quiz {
    grid-template-columns: minmax(0, 1.7fr) minmax(280px, 1fr);
}
.results-col { display: flex; flex-direction: column; gap: 1rem; min-width: 0; }
.results-col--primary { grid-column: span 1 / span 1; }
.results-col--side { grid-column: span 1 / span 1; }
@media (max-width: 880px) {
    .results-grid--quiz { grid-template-columns: 1fr; }
}

.results-cta-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.55rem;
    justify-content: center;
    margin: 1.5rem 0 0;
}

.results-card--soft {
    background: var(--results-surface-muted);
    border-style: dashed;
}
.results-card__body--muted {
    color: var(--results-ink-subtle);
    font-size: 0.8125rem;
    margin: 0.5rem 0 0;
}

.results-constellation__canvas {
    width: 100%;
    min-height: 200px;
    display: block;
    padding: 0.5rem;
}

/* =========================================================================
   UI DEPTH — shared layout/token helpers for additive page upgrades
   ========================================================================= */

:root {
    --ui-depth-rail-width: 320px;
    --ui-depth-gap: 1rem;
    --ui-depth-surface: #ffffff;
    --ui-depth-surface-subtle: #f6f9ff;
    --ui-depth-border: #d7e3f5;
    --ui-depth-ink: #15253f;
    --ui-depth-ink-muted: #557192;
    --ui-depth-accent: #2b8cee;
    --ui-depth-accent-soft: rgba(43, 140, 238, 0.12);
    --ui-depth-positive: #0f9f6f;
    --ui-depth-warn: #b7791f;
}

.dark {
    --ui-depth-surface: #0f1b2d;
    --ui-depth-surface-subtle: #14243b;
    --ui-depth-border: #2a3d58;
    --ui-depth-ink: #dde8f7;
    --ui-depth-ink-muted: #94abc8;
    --ui-depth-accent-soft: rgba(43, 140, 238, 0.24);
    --ui-depth-positive: #34c98f;
    --ui-depth-warn: #f6c15f;
}

.ui-depth-surface {
    background: var(--ui-depth-surface);
    border: 1px solid var(--ui-depth-border);
    border-radius: 1rem;
    box-shadow: var(--brand-shadow-soft);
}

.ui-depth-subtle {
    background: var(--ui-depth-surface-subtle);
    border: 1px solid var(--ui-depth-border);
    border-radius: 0.875rem;
}

.ui-depth-kpi-strip {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.75rem;
}

.ui-depth-kpi {
    padding: 0.8rem 0.9rem;
    border-radius: 0.875rem;
    border: 1px solid var(--ui-depth-border);
    background: var(--ui-depth-surface);
}

.ui-depth-kpi__label {
    display: block;
    color: var(--ui-depth-ink-muted);
    font-size: 0.73rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.ui-depth-kpi__value {
    display: block;
    margin-top: 0.2rem;
    color: var(--ui-depth-ink);
    font-size: 1.05rem;
    font-weight: 700;
}

.ui-depth-grid-2 {
    display: grid;
    gap: var(--ui-depth-gap);
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
}

.ui-depth-split {
    display: grid;
    gap: var(--ui-depth-gap);
    grid-template-columns: minmax(0, 1fr) minmax(250px, var(--ui-depth-rail-width));
}

.ui-depth-split--chat {
    grid-template-columns: minmax(220px, 300px) minmax(0, 1fr) minmax(260px, 340px);
}

.ui-depth-rail {
    position: sticky;
    top: calc(var(--slato-nav-height, 64px) + 1rem);
    align-self: start;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.ui-depth-chip-group {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
}

.ui-depth-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.35rem 0.62rem;
    border-radius: 999px;
    border: 1px solid var(--ui-depth-border);
    background: var(--ui-depth-surface);
    color: var(--ui-depth-ink-muted);
    font-size: 0.75rem;
    font-weight: 600;
}

.ui-depth-chip.is-active {
    background: var(--ui-depth-accent-soft);
    border-color: var(--ui-depth-accent);
    color: var(--ui-depth-accent);
}

.ui-depth-timeline {
    display: grid;
    gap: 0.6rem;
}

.ui-depth-timeline-row {
    border: 1px solid var(--ui-depth-border);
    border-radius: 0.8rem;
    background: var(--ui-depth-surface);
    padding: 0.65rem 0.75rem;
}

.ui-depth-timeline-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
}

.ui-depth-timeline-title {
    color: var(--ui-depth-ink);
    font-size: 0.88rem;
    font-weight: 600;
}

.ui-depth-timeline-meta {
    color: var(--ui-depth-ink-muted);
    font-size: 0.74rem;
}

.ui-depth-empty {
    border: 1px dashed var(--ui-depth-border);
    border-radius: 0.9rem;
    padding: 0.95rem;
    color: var(--ui-depth-ink-muted);
    background: var(--ui-depth-surface-subtle);
}

.ui-depth-sticky-rank-card {
    position: fixed;
    bottom: 0.85rem;
    left: 50%;
    transform: translate(-50%, 130%);
    transition: transform 0.28s ease;
    z-index: 45;
    min-width: min(680px, calc(100vw - 2rem));
}

.ui-depth-sticky-rank-card.is-sticky-visible {
    transform: translate(-50%, 0);
}

.ui-depth-search-input {
    width: 100%;
    border: 1px solid var(--ui-depth-border);
    background: var(--ui-depth-surface);
    border-radius: 0.7rem;
    padding: 0.48rem 0.68rem;
    color: var(--ui-depth-ink);
}

@media (max-width: 1140px) {
    .ui-depth-split--chat {
        grid-template-columns: minmax(220px, 280px) minmax(0, 1fr);
    }

    .ui-depth-split--chat > [data-chat-context-rail] {
        grid-column: 1 / -1;
    }
}

@media (max-width: 960px) {
    .ui-depth-kpi-strip,
    .ui-depth-grid-2,
    .ui-depth-split {
        grid-template-columns: 1fr;
    }

    .ui-depth-rail {
        position: static;
    }

    .ui-depth-sticky-rank-card {
        min-width: calc(100vw - 1rem);
    }
}