/**
 * bv Static Viewer Styles
 *
 * Theme system with dark (Dracula-inspired) and light (GitHub-inspired) modes
 * Supports system preference detection and manual toggle
 */

/* Vendored Fonts - Inter and JetBrains Mono for offline use */
@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 100 900; /* Variable font supports all weights */
    font-display: swap;
    src: url('vendor/inter-variable.woff2') format('woff2');
}

@font-face {
    font-family: 'JetBrains Mono';
    font-style: normal;
    font-weight: 400;
    font-display: swap;
    src: url('vendor/jetbrains-mono-regular.woff2') format('woff2');
}

/* CSS Variables - Shared values */
:root {
    /* Typography */
    --bv-font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    --bv-font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    /* Spacing */
    --bv-space-xs: 0.25rem;
    --bv-space-sm: 0.5rem;
    --bv-space-md: 1rem;
    --bv-space-lg: 1.5rem;
    --bv-space-xl: 2rem;

    /* Border radius */
    --bv-radius-sm: 4px;
    --bv-radius-md: 8px;
    --bv-radius-lg: 12px;

    /* Transitions */
    --bv-transition: 0.2s ease-out;
}

/* Light Theme (GitHub-inspired) - Default */
:root {
    --bv-bg: #ffffff;
    --bv-bg-secondary: #f6f8fa;
    --bv-bg-tertiary: #eaeef2;
    --bv-fg: #24292f;
    --bv-fg-muted: #57606a;
    --bv-border: #d0d7de;

    /* Status colors - light mode */
    --bv-status-open: #1a7f37;
    --bv-status-in-progress: #9a6700;
    --bv-status-blocked: #cf222e;
    --bv-status-closed: #57606a;

    /* Accent colors - light mode */
    --bv-cyan: #0969da;
    --bv-green: #1a7f37;
    --bv-orange: #9a6700;
    --bv-pink: #bf3989;
    --bv-purple: #8250df;
    --bv-red: #cf222e;
    --bv-yellow: #9a6700;

    /* Priority colors - light mode */
    --bv-priority-0: #cf222e;
    --bv-priority-1: #d1242f;
    --bv-priority-2: #bf8700;
    --bv-priority-3: #1a7f37;
    --bv-priority-4: #57606a;

    /* Graph colors */
    --bv-node-glow: rgba(130, 80, 223, 0.3);
    --bv-edge-default: #d0d7de;
    --bv-edge-highlight: #8250df;

    /* Shadow */
    --bv-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

/* Dark Theme (Dracula-inspired) - via .dark class */
.dark {
    --bv-bg: #282a36;
    --bv-bg-secondary: #44475a;
    --bv-bg-tertiary: #21222c;
    --bv-fg: #f8f8f2;
    --bv-fg-muted: #6272a4;
    --bv-border: #44475a;

    /* Status colors - dark mode */
    --bv-status-open: #50fa7b;
    --bv-status-in-progress: #ffb86c;
    --bv-status-blocked: #ff5555;
    --bv-status-closed: #6272a4;

    /* Accent colors - dark mode */
    --bv-cyan: #8be9fd;
    --bv-green: #50fa7b;
    --bv-orange: #ffb86c;
    --bv-pink: #ff79c6;
    --bv-purple: #bd93f9;
    --bv-red: #ff5555;
    --bv-yellow: #f1fa8c;

    /* Priority colors - dark mode */
    --bv-priority-0: #ff0000;
    --bv-priority-1: #ff5555;
    --bv-priority-2: #ffb86c;
    --bv-priority-3: #f1fa8c;
    --bv-priority-4: #6272a4;

    /* Graph colors */
    --bv-node-glow: rgba(189, 147, 249, 0.4);
    --bv-edge-default: #44475a;
    --bv-edge-highlight: #bd93f9;

    /* Shadow */
    --bv-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

/* Base reset */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* Graph container styles */
.bv-graph-container {
    width: 100%;
    height: 100%;
    background: var(--bv-bg);
    position: relative;
    overflow: hidden;
}

.bv-graph-container canvas {
    display: block;
}

/* Loading overlay */
.bv-loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: var(--bv-fg);
    z-index: 10;
}

.bv-loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--bv-bg-secondary);
    border-top-color: var(--bv-purple);
    border-radius: 50%;
    animation: bv-spin 1s linear infinite;
    margin: 0 auto var(--bv-space-md);
}

@keyframes bv-spin {
    to { transform: rotate(360deg); }
}

/* Status badges */
.bv-badge {
    display: inline-flex;
    align-items: center;
    padding: var(--bv-space-xs) var(--bv-space-sm);
    border-radius: var(--bv-radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.bv-badge-open {
    background: var(--bv-status-open);
    color: var(--bv-bg);
}

.bv-badge-in-progress {
    background: var(--bv-status-in-progress);
    color: var(--bv-bg);
}

.bv-badge-blocked {
    background: var(--bv-status-blocked);
    color: var(--bv-fg);
}

.bv-badge-closed {
    background: var(--bv-status-closed);
    color: var(--bv-fg);
}

/* Priority indicators */
.bv-priority {
    display: inline-flex;
    align-items: center;
    gap: var(--bv-space-xs);
}

.bv-priority-0::before { content: '🔥🔥🔥'; }
.bv-priority-1::before { content: '🔥🔥'; }
.bv-priority-2::before { content: '🔥'; }
.bv-priority-3::before { content: ''; }
.bv-priority-4::before { content: ''; }

/* Panel styles */
.bv-panel {
    background: var(--bv-bg-secondary);
    border-radius: var(--bv-radius-md);
    padding: var(--bv-space-md);
    margin-bottom: var(--bv-space-md);
}

.bv-panel-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--bv-cyan);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--bv-space-sm);
}

/* Legend */
.bv-legend {
    display: flex;
    flex-wrap: wrap;
    gap: var(--bv-space-md);
}

.bv-legend-item {
    display: flex;
    align-items: center;
    gap: var(--bv-space-xs);
    font-size: 0.75rem;
    color: var(--bv-fg-muted);
}

.bv-legend-color {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    flex-shrink: 0;
}

/* Stats grid */
.bv-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: var(--bv-space-sm);
}

.bv-stat {
    background: var(--bv-bg);
    padding: var(--bv-space-md);
    border-radius: var(--bv-radius-sm);
    text-align: center;
}

.bv-stat-value {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--bv-green);
}

.bv-stat-label {
    font-size: 0.75rem;
    color: var(--bv-fg-muted);
    margin-top: var(--bv-space-xs);
}

/* Buttons */
.bv-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--bv-space-xs);
    padding: var(--bv-space-sm) var(--bv-space-md);
    background: var(--bv-purple);
    color: var(--bv-bg);
    border: none;
    border-radius: var(--bv-radius-sm);
    font-family: var(--bv-font-mono);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--bv-transition);
}

.bv-btn:hover {
    background: var(--bv-pink);
}

.bv-btn:active {
    transform: scale(0.98);
}

.bv-btn-secondary {
    background: var(--bv-bg-secondary);
    color: var(--bv-fg);
    border: 1px solid var(--bv-fg-muted);
}

.bv-btn-secondary:hover {
    background: var(--bv-bg);
    border-color: var(--bv-purple);
}

/* Input fields */
.bv-input,
.bv-select {
    background: var(--bv-bg);
    color: var(--bv-fg);
    border: 1px solid var(--bv-fg-muted);
    padding: var(--bv-space-sm) var(--bv-space-md);
    border-radius: var(--bv-radius-sm);
    font-family: var(--bv-font-mono);
    font-size: 0.875rem;
    transition: border-color var(--bv-transition);
}

.bv-input:focus,
.bv-select:focus {
    outline: none;
    border-color: var(--bv-purple);
}

/* Tooltip */
.bv-tooltip {
    position: absolute;
    background: var(--bv-bg);
    color: var(--bv-fg);
    padding: var(--bv-space-sm) var(--bv-space-md);
    border-radius: var(--bv-radius-sm);
    border: 1px solid var(--bv-purple);
    font-size: 0.75rem;
    max-width: 300px;
    pointer-events: none;
    z-index: 100;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

/* Utility classes */
.bv-hidden { display: none !important; }
.bv-visible { display: block !important; }
.bv-flex { display: flex !important; }
.bv-text-center { text-align: center; }
.bv-text-muted { color: var(--bv-fg-muted); }
.bv-mt-sm { margin-top: var(--bv-space-sm); }
.bv-mt-md { margin-top: var(--bv-space-md); }
.bv-mb-sm { margin-bottom: var(--bv-space-sm); }
.bv-mb-md { margin-bottom: var(--bv-space-md); }

/* ============================================================================
   PROSE TYPOGRAPHY - Beautiful markdown rendering for detail panes
   ============================================================================ */

.prose {
    color: var(--bv-fg);
    line-height: 1.65;
    font-size: 0.9375rem;
}

.prose-sm {
    font-size: 0.875rem;
    line-height: 1.6;
}

/* Headings */
.prose h1, .prose h2, .prose h3, .prose h4, .prose h5, .prose h6 {
    color: var(--bv-fg);
    font-weight: 600;
    line-height: 1.3;
    margin-top: 1.5em;
    margin-bottom: 0.5em;
}

.prose h1 { font-size: 1.5em; }
.prose h2 { font-size: 1.25em; border-bottom: 1px solid var(--bv-border); padding-bottom: 0.3em; }
.prose h3 { font-size: 1.125em; }
.prose h4 { font-size: 1em; }

.prose h1:first-child, .prose h2:first-child, .prose h3:first-child {
    margin-top: 0;
}

/* Paragraphs */
.prose p {
    margin-top: 0.75em;
    margin-bottom: 0.75em;
}

.prose p:first-child {
    margin-top: 0;
}

/* Links */
.prose a {
    color: var(--bv-cyan);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.15s ease;
}

.prose a:hover {
    color: var(--bv-purple);
    text-decoration: underline;
}

/* Bold and emphasis */
.prose strong {
    color: var(--bv-fg);
    font-weight: 600;
}

.prose em {
    font-style: italic;
}

/* Code */
.prose code {
    font-family: var(--bv-font-mono);
    font-size: 0.875em;
    background: var(--bv-bg-secondary);
    color: var(--bv-pink);
    padding: 0.2em 0.4em;
    border-radius: 4px;
    font-weight: 500;
}

.prose pre {
    font-family: var(--bv-font-mono);
    font-size: 0.8125rem;
    line-height: 1.5;
    background: var(--bv-bg-tertiary);
    color: var(--bv-fg);
    padding: 1em;
    border-radius: 8px;
    overflow-x: auto;
    margin: 1em 0;
    border: 1px solid var(--bv-border);
}

.prose pre code {
    background: transparent;
    color: inherit;
    padding: 0;
    font-size: inherit;
}

/* Lists */
.prose ul, .prose ol {
    margin: 0.75em 0;
    padding-left: 1.5em;
}

.prose ul {
    list-style-type: disc;
}

.prose ol {
    list-style-type: decimal;
}

.prose li {
    margin: 0.375em 0;
    padding-left: 0.25em;
}

.prose li > ul, .prose li > ol {
    margin-top: 0.375em;
    margin-bottom: 0.375em;
}

/* Nested lists */
.prose ul ul {
    list-style-type: circle;
}

.prose ul ul ul {
    list-style-type: square;
}

/* Task lists (checkboxes) */
.prose input[type="checkbox"] {
    margin-right: 0.5em;
    accent-color: var(--bv-green);
}

/* Blockquotes */
.prose blockquote {
    border-left: 4px solid var(--bv-purple);
    margin: 1em 0;
    padding: 0.75em 1em;
    color: var(--bv-fg-muted);
    font-style: italic;
    background: var(--bv-bg-secondary);
    border-radius: 0 8px 8px 0;
}

.prose blockquote p {
    margin: 0;
}

/* Horizontal rules */
.prose hr {
    border: none;
    height: 1px;
    background: var(--bv-border);
    margin: 1.5em 0;
}

/* Tables */
.prose table {
    width: 100%;
    border-collapse: collapse;
    margin: 1em 0;
    font-size: 0.875em;
}

.prose th, .prose td {
    border: 1px solid var(--bv-border);
    padding: 0.5em 0.75em;
    text-align: left;
}

.prose th {
    background: var(--bv-bg-secondary);
    font-weight: 600;
}

.prose tr:nth-child(even) {
    background: var(--bv-bg-secondary);
}

/* Images */
.prose img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 1em 0;
}

/* Dark mode adjustments */
.dark .prose {
    color: var(--bv-fg);
}

.dark .prose code {
    background: var(--bv-bg-tertiary);
    color: var(--bv-pink);
}

.dark .prose pre {
    background: #1e1f29;
    border-color: var(--bv-border);
}

.dark .prose blockquote {
    background: var(--bv-bg-tertiary);
    border-left-color: var(--bv-purple);
}

/* prose-invert class for explicit dark styling */
.prose-invert {
    color: #f8f8f2;
}

.prose-invert a {
    color: #8be9fd;
}

.prose-invert a:hover {
    color: #bd93f9;
}

.prose-invert code {
    background: #21222c;
    color: #ff79c6;
}

/* Max width override */
.prose.max-w-none {
    max-width: none;
}

/* Heading size override for detail pane */
.prose-headings\:text-base h1,
.prose-headings\:text-base h2,
.prose-headings\:text-base h3 {
    font-size: 1rem;
}

/* Tighter paragraph spacing for detail pane */
.prose-p\:my-2 p {
    margin-top: 0.5rem;
    margin-bottom: 0.5rem;
}

/* Prose excerpt styles for issue list inline markdown */
.prose-excerpt {
    /* Inherit font settings */
    font-size: inherit;
    line-height: inherit;
    color: inherit;
}
.prose-excerpt a {
    color: var(--bv-beads-500, #0ea5e9);
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 2px;
}
.prose-excerpt a:hover {
    color: var(--bv-beads-600, #0284c7);
}
.prose-excerpt code {
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 0.9em;
    padding: 0.1em 0.3em;
    background: rgba(0, 0, 0, 0.05);
    border-radius: 3px;
}
.dark .prose-excerpt code {
    background: rgba(255, 255, 255, 0.1);
}
.prose-excerpt strong {
    font-weight: 600;
}
.prose-excerpt em {
    font-style: italic;
}

/* Theme toggle button */
.bv-theme-toggle {
    position: fixed;
    top: var(--bv-space-md);
    right: var(--bv-space-md);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--bv-bg-secondary);
    border: 2px solid var(--bv-border);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    transition: all var(--bv-transition);
    z-index: 1000;
    box-shadow: var(--bv-shadow);
}

.bv-theme-toggle:hover {
    background: var(--bv-purple);
    border-color: var(--bv-purple);
    transform: scale(1.1);
}

.bv-theme-toggle:active {
    transform: scale(0.95);
}

.bv-theme-toggle .bv-icon-sun,
.bv-theme-toggle .bv-icon-moon {
    position: absolute;
    transition: opacity var(--bv-transition), transform var(--bv-transition);
}

/* Light mode (default): show moon icon (to switch to dark) */
:root .bv-theme-toggle .bv-icon-sun {
    opacity: 0;
    transform: rotate(90deg);
}

:root .bv-theme-toggle .bv-icon-moon {
    opacity: 1;
    transform: rotate(0deg);
}

/* Dark mode: show sun icon (to switch to light) */
.dark .bv-theme-toggle .bv-icon-sun {
    opacity: 1;
    transform: rotate(0deg);
}

.dark .bv-theme-toggle .bv-icon-moon {
    opacity: 0;
    transform: rotate(-90deg);
}

/* Smooth theme transitions for all elements */
body,
.bv-graph-container,
.bv-panel,
.bv-tooltip,
.bv-btn,
.bv-input,
.bv-select,
.bv-badge,
.bv-stat {
    transition: background-color var(--bv-transition),
                color var(--bv-transition),
                border-color var(--bv-transition),
                box-shadow var(--bv-transition);
}

/* ============================================================================
   PREMIUM UI ENHANCEMENTS
   World-class UI/UX inspired by Stripe, Linear, and modern design systems
   ============================================================================ */

/* Premium Shadows - Layered for depth */
:root {
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 10px 10px -5px rgba(0, 0, 0, 0.03);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
    --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.04);
    --shadow-ring: 0 0 0 3px rgba(14, 165, 233, 0.15);
    --shadow-ring-focus: 0 0 0 3px rgba(14, 165, 233, 0.3);
}

.dark {
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.35), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.45), 0 10px 10px -5px rgba(0, 0, 0, 0.2);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.6);
    --shadow-ring: 0 0 0 3px rgba(14, 165, 233, 0.2);
    --shadow-ring-focus: 0 0 0 3px rgba(14, 165, 233, 0.4);
}

/* Premium Animation Timing Functions */
:root {
    --ease-out-expo: cubic-bezier(0.19, 1, 0.22, 1);
    --ease-out-back: cubic-bezier(0.34, 1.56, 0.64, 1);
    --ease-in-out-expo: cubic-bezier(0.87, 0, 0.13, 1);
    --spring: cubic-bezier(0.175, 0.885, 0.32, 1.275);
    --smooth: cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================================================
   MOBILE-FIRST ENHANCEMENTS
   ============================================================================ */

/* Smooth momentum scrolling for all scrollable areas */
.scroll-smooth {
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
}

/* Hide scrollbar but keep functionality */
.scrollbar-hide {
    -ms-overflow-style: none;
    scrollbar-width: none;
}
.scrollbar-hide::-webkit-scrollbar {
    display: none;
}

/* Horizontal scroll container for mobile cards */
.scroll-snap-x {
    scroll-snap-type: x mandatory;
    scroll-padding: 1rem;
    -webkit-overflow-scrolling: touch;
}

.scroll-snap-center {
    scroll-snap-align: center;
}

.scroll-snap-start {
    scroll-snap-align: start;
}

/* Touch-optimized buttons with press feedback */
.touch-btn {
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
    user-select: none;
    transition: transform 0.1s var(--ease-out-expo),
                box-shadow 0.2s var(--smooth),
                background-color 0.2s var(--smooth);
}

.touch-btn:active {
    transform: scale(0.97);
}

/* Premium card with lift effect */
.card-lift {
    transition: transform 0.3s var(--ease-out-expo),
                box-shadow 0.3s var(--ease-out-expo);
}

.card-lift:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.card-lift:active {
    transform: translateY(0) scale(0.99);
    box-shadow: var(--shadow-sm);
}

/* Glass morphism effect */
.glass {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.dark .glass {
    background: rgba(40, 42, 54, 0.85);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Premium focus ring (Stripe-style) */
.focus-ring {
    outline: none;
    transition: box-shadow 0.15s var(--smooth);
}

.focus-ring:focus-visible {
    box-shadow: var(--shadow-ring-focus), var(--shadow-sm);
}

/* ============================================================================
   MICRO-ANIMATIONS
   ============================================================================ */

/* Fade in up animation */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in-up {
    animation: fadeInUp 0.4s var(--ease-out-expo) forwards;
}

/* Staggered children animation */
.stagger-children > * {
    opacity: 0;
    animation: fadeInUp 0.4s var(--ease-out-expo) forwards;
}

.stagger-children > *:nth-child(1) { animation-delay: 0ms; }
.stagger-children > *:nth-child(2) { animation-delay: 50ms; }
.stagger-children > *:nth-child(3) { animation-delay: 100ms; }
.stagger-children > *:nth-child(4) { animation-delay: 150ms; }
.stagger-children > *:nth-child(5) { animation-delay: 200ms; }
.stagger-children > *:nth-child(6) { animation-delay: 250ms; }
.stagger-children > *:nth-child(7) { animation-delay: 300ms; }
.stagger-children > *:nth-child(8) { animation-delay: 350ms; }

/* Scale in animation */
@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.animate-scale-in {
    animation: scaleIn 0.25s var(--ease-out-back) forwards;
}

/* Slide in from right */
@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.animate-slide-in-right {
    animation: slideInRight 0.3s var(--ease-out-expo) forwards;
}

/* Pulse glow effect */
@keyframes pulseGlow {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(14, 165, 233, 0.4);
    }
    50% {
        box-shadow: 0 0 0 8px rgba(14, 165, 233, 0);
    }
}

.animate-pulse-glow {
    animation: pulseGlow 2s var(--smooth) infinite;
}

/* Number counter animation helper */
@keyframes countUp {
    from { opacity: 0.5; }
    to { opacity: 1; }
}

/* Shimmer loading effect */
@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }
    100% {
        background-position: 200% 0;
    }
}

.animate-shimmer {
    background: linear-gradient(
        90deg,
        rgba(255, 255, 255, 0) 0%,
        rgba(255, 255, 255, 0.3) 50%,
        rgba(255, 255, 255, 0) 100%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

.dark .animate-shimmer {
    background: linear-gradient(
        90deg,
        rgba(255, 255, 255, 0) 0%,
        rgba(255, 255, 255, 0.08) 50%,
        rgba(255, 255, 255, 0) 100%
    );
    background-size: 200% 100%;
}

/* ============================================================================
   SKELETON LOADING STATES
   ============================================================================ */

.skeleton {
    background: linear-gradient(
        90deg,
        #e5e7eb 0%,
        #f3f4f6 50%,
        #e5e7eb 100%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite linear;
    border-radius: 4px;
}

.dark .skeleton {
    background: linear-gradient(
        90deg,
        #374151 0%,
        #4b5563 50%,
        #374151 100%
    );
    background-size: 200% 100%;
}

.skeleton-text {
    height: 1em;
    margin-bottom: 0.5em;
}

.skeleton-title {
    height: 1.5em;
    width: 60%;
    margin-bottom: 0.75em;
}

.skeleton-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
}

.skeleton-card {
    height: 100px;
    border-radius: 12px;
}

/* ============================================================================
   PREMIUM BUTTON STYLES
   ============================================================================ */

.btn-primary {
    background: linear-gradient(180deg, #0ea5e9 0%, #0284c7 100%);
    color: white;
    font-weight: 500;
    padding: 0.625rem 1.25rem;
    border-radius: 8px;
    border: none;
    box-shadow: var(--shadow-sm), inset 0 1px 0 rgba(255, 255, 255, 0.15);
    transition: all 0.2s var(--smooth);
    -webkit-tap-highlight-color: transparent;
}

.btn-primary:hover {
    background: linear-gradient(180deg, #38bdf8 0%, #0ea5e9 100%);
    box-shadow: var(--shadow-md), inset 0 1px 0 rgba(255, 255, 255, 0.15);
    transform: translateY(-1px);
}

.btn-primary:active {
    background: linear-gradient(180deg, #0284c7 0%, #0369a1 100%);
    box-shadow: var(--shadow-xs);
    transform: translateY(0);
}

.btn-secondary {
    background: white;
    color: #374151;
    font-weight: 500;
    padding: 0.625rem 1.25rem;
    border-radius: 8px;
    border: 1px solid #d1d5db;
    box-shadow: var(--shadow-xs);
    transition: all 0.2s var(--smooth);
    -webkit-tap-highlight-color: transparent;
}

.dark .btn-secondary {
    background: #374151;
    color: #f3f4f6;
    border-color: #4b5563;
}

.btn-secondary:hover {
    background: #f9fafb;
    border-color: #9ca3af;
    box-shadow: var(--shadow-sm);
}

.dark .btn-secondary:hover {
    background: #4b5563;
    border-color: #6b7280;
}

/* ============================================================================
   PREMIUM INPUT STYLES
   ============================================================================ */

.input-premium {
    width: 100%;
    padding: 0.625rem 0.875rem;
    border: 1px solid #d1d5db;
    border-radius: 8px;
    background: white;
    font-size: 0.875rem;
    transition: all 0.15s var(--smooth);
    box-shadow: var(--shadow-xs);
}

.dark .input-premium {
    background: #374151;
    border-color: #4b5563;
    color: #f3f4f6;
}

.input-premium:focus {
    outline: none;
    border-color: #0ea5e9;
    box-shadow: var(--shadow-ring-focus);
}

.input-premium::placeholder {
    color: #9ca3af;
}

.dark .input-premium::placeholder {
    color: #6b7280;
}

/* ============================================================================
   BODY SCROLL LOCK FOR MODALS
   ============================================================================ */

/* Prevent body scroll when modal is open (iOS scroll bleed fix) */
body.modal-open {
    overflow: hidden;
    position: fixed;
    width: 100%;
    height: 100%;
    /* Preserve scroll position */
    top: calc(var(--scroll-y, 0) * -1);
}

/* Ensure modal content can still scroll */
body.modal-open .overflow-y-auto {
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
}

/* ============================================================================
   MOBILE BOTTOM SHEET
   ============================================================================ */

.bottom-sheet {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: white;
    border-radius: 20px 20px 0 0;
    box-shadow: 0 -10px 40px rgba(0, 0, 0, 0.15);
    transform: translateY(100%);
    transition: transform 0.35s var(--ease-out-expo);
    z-index: 100;
    max-height: 90vh;
    overflow: hidden;
}

.dark .bottom-sheet {
    background: #1f2937;
    box-shadow: 0 -10px 40px rgba(0, 0, 0, 0.4);
}

.bottom-sheet.open {
    transform: translateY(0);
}

.bottom-sheet-handle {
    width: 36px;
    height: 4px;
    background: #d1d5db;
    border-radius: 2px;
    margin: 12px auto;
}

.dark .bottom-sheet-handle {
    background: #4b5563;
}

/* ============================================================================
   MOBILE STAT CARDS (Horizontal Scrolling)
   ============================================================================ */

.stat-scroll-container {
    display: flex;
    gap: 12px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scroll-padding: 16px;
    padding: 4px 16px 16px;
    margin: 0 -16px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

.stat-scroll-container::-webkit-scrollbar {
    display: none;
}

.stat-card-mobile {
    flex: 0 0 auto;
    width: 140px;
    scroll-snap-align: start;
    background: white;
    border-radius: 16px;
    padding: 16px;
    border: 1px solid #e5e7eb;
    box-shadow: var(--shadow-sm);
    transition: all 0.2s var(--smooth);
}

.dark .stat-card-mobile {
    background: #1f2937;
    border-color: #374151;
}

.stat-card-mobile:active {
    transform: scale(0.98);
    box-shadow: var(--shadow-xs);
}

/* ============================================================================
   PREMIUM LIST ITEMS
   ============================================================================ */

.list-item-premium {
    display: flex;
    align-items: flex-start;
    padding: 16px;
    background: white;
    border-radius: 12px;
    border: 1px solid #e5e7eb;
    margin-bottom: 8px;
    transition: all 0.2s var(--smooth);
    -webkit-tap-highlight-color: transparent;
}

.dark .list-item-premium {
    background: #1f2937;
    border-color: #374151;
}

.list-item-premium:hover {
    border-color: #0ea5e9;
    box-shadow: var(--shadow-ring);
}

.list-item-premium:active {
    transform: scale(0.995);
    background: #f9fafb;
}

.dark .list-item-premium:active {
    background: #111827;
}

/* ============================================================================
   MOBILE NAVIGATION ENHANCEMENTS
   ============================================================================ */

.nav-item-mobile {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 8px 16px;
    min-width: 64px;
    color: #6b7280;
    transition: all 0.2s var(--smooth);
    -webkit-tap-highlight-color: transparent;
    position: relative;
}

.nav-item-mobile.active {
    color: #0ea5e9;
}

.nav-item-mobile.active::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 24px;
    height: 3px;
    background: linear-gradient(90deg, #0ea5e9, #38bdf8);
    border-radius: 0 0 3px 3px;
}

.nav-item-mobile:active {
    transform: scale(0.95);
}

.nav-item-mobile svg {
    width: 24px;
    height: 24px;
    margin-bottom: 4px;
    transition: transform 0.2s var(--ease-out-back);
}

.nav-item-mobile:active svg {
    transform: scale(0.9);
}

.nav-item-mobile span {
    font-size: 10px;
    font-weight: 500;
    letter-spacing: 0.02em;
}

/* ============================================================================
   PULL TO REFRESH INDICATOR
   ============================================================================ */

.pull-to-refresh {
    position: absolute;
    top: -60px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: white;
    border-radius: 50%;
    box-shadow: var(--shadow-md);
    opacity: 0;
    transition: all 0.3s var(--smooth);
}

.dark .pull-to-refresh {
    background: #374151;
}

.pull-to-refresh.visible {
    opacity: 1;
    top: 16px;
}

.pull-to-refresh.refreshing svg {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* ============================================================================
   HAPTIC FEEDBACK HINTS (Visual feedback for touch)
   ============================================================================ */

.haptic-light:active {
    /* Light tap - subtle scale */
    transform: scale(0.98);
    transition: transform 0.08s ease-out;
}

.haptic-medium:active {
    /* Medium tap - noticeable scale */
    transform: scale(0.96);
    transition: transform 0.08s ease-out;
}

.haptic-heavy:active {
    /* Heavy tap - strong scale with brief delay */
    transform: scale(0.94);
    transition: transform 0.1s ease-out;
}

/* ============================================================================
   SAFE AREA HANDLING (iPhone notch, home indicator)
   ============================================================================ */

.safe-area-bottom {
    padding-bottom: env(safe-area-inset-bottom, 0);
}

.safe-area-top {
    padding-top: env(safe-area-inset-top, 0);
}

.safe-area-left {
    padding-left: env(safe-area-inset-left, 0);
}

.safe-area-right {
    padding-right: env(safe-area-inset-right, 0);
}

/* ============================================================================
   IMPROVED TYPOGRAPHY FOR MOBILE
   ============================================================================ */

/* Tighter line height for mobile headings */
@media (max-width: 640px) {
    h1, h2, h3, .heading-mobile {
        letter-spacing: -0.02em;
        line-height: 1.2;
    }

    /* Larger touch targets for links in content */
    .prose a {
        padding: 2px 0;
    }

    /* Better readability on small screens */
    .text-body-mobile {
        font-size: 15px;
        line-height: 1.6;
        letter-spacing: 0.01em;
    }
}

/* ============================================================================
   STATUS PILL ENHANCEMENTS
   ============================================================================ */

.status-pill {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: 9999px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    transition: all 0.15s var(--smooth);
}

.status-pill-open {
    background: linear-gradient(135deg, #dcfce7 0%, #bbf7d0 100%);
    color: #166534;
    border: 1px solid #86efac;
}

.dark .status-pill-open {
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.2) 0%, rgba(34, 197, 94, 0.1) 100%);
    color: #4ade80;
    border-color: rgba(34, 197, 94, 0.3);
}

.status-pill-in-progress {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    color: #92400e;
    border: 1px solid #fcd34d;
}

.dark .status-pill-in-progress {
    background: linear-gradient(135deg, rgba(251, 191, 36, 0.2) 0%, rgba(251, 191, 36, 0.1) 100%);
    color: #fbbf24;
    border-color: rgba(251, 191, 36, 0.3);
}

.status-pill-blocked {
    background: linear-gradient(135deg, #fee2e2 0%, #fecaca 100%);
    color: #991b1b;
    border: 1px solid #fca5a5;
}

.dark .status-pill-blocked {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.2) 0%, rgba(239, 68, 68, 0.1) 100%);
    color: #f87171;
    border-color: rgba(239, 68, 68, 0.3);
}

.status-pill-closed {
    background: linear-gradient(135deg, #f3f4f6 0%, #e5e7eb 100%);
    color: #4b5563;
    border: 1px solid #d1d5db;
}

.dark .status-pill-closed {
    background: linear-gradient(135deg, rgba(107, 114, 128, 0.2) 0%, rgba(107, 114, 128, 0.1) 100%);
    color: #9ca3af;
    border-color: rgba(107, 114, 128, 0.3);
}

/* ============================================================================
   EMPTY STATE STYLING
   ============================================================================ */

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 48px 24px;
    text-align: center;
}

.empty-state-icon {
    width: 64px;
    height: 64px;
    margin-bottom: 16px;
    color: #d1d5db;
    opacity: 0.8;
}

.dark .empty-state-icon {
    color: #4b5563;
}

.empty-state-title {
    font-size: 18px;
    font-weight: 600;
    color: #374151;
    margin-bottom: 8px;
}

.dark .empty-state-title {
    color: #e5e7eb;
}

.empty-state-description {
    font-size: 14px;
    color: #6b7280;
    max-width: 280px;
}

.dark .empty-state-description {
    color: #9ca3af;
}

/* ============================================================================
   PREMIUM TOOLTIP SYSTEM - World-Class Metric Explanations
   ============================================================================ */

/* Tooltip container - positioned relative */
.metric-tooltip-trigger {
    position: relative;
    cursor: help;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

/* Info icon for tooltips */
.metric-tooltip-trigger::after {
    content: '';
    display: inline-block;
    width: 14px;
    height: 14px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%239ca3af'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M13 16h-1v-4h-1m1-4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z'/%3E%3C/svg%3E");
    background-size: contain;
    opacity: 0.6;
    transition: opacity 0.2s ease;
    flex-shrink: 0;
}

.metric-tooltip-trigger:hover::after {
    opacity: 1;
}

/* Rich tooltip panel - desktop */
.metric-tooltip {
    position: absolute;
    z-index: 100;
    width: 320px;
    padding: 16px;
    background: white;
    border-radius: 16px;
    box-shadow:
        0 25px 50px -12px rgba(0, 0, 0, 0.25),
        0 0 0 1px rgba(0, 0, 0, 0.05);
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px) scale(0.96);
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    pointer-events: none;
    left: 50%;
    top: calc(100% + 12px);
    margin-left: -160px;
}

.dark .metric-tooltip {
    background: #1f2937;
    box-shadow:
        0 25px 50px -12px rgba(0, 0, 0, 0.5),
        0 0 0 1px rgba(255, 255, 255, 0.1);
}

/* Tooltip arrow */
.metric-tooltip::before {
    content: '';
    position: absolute;
    top: -6px;
    left: 50%;
    margin-left: -6px;
    width: 12px;
    height: 12px;
    background: white;
    transform: rotate(45deg);
    box-shadow: -2px -2px 4px rgba(0, 0, 0, 0.04);
    border-radius: 2px;
}

.dark .metric-tooltip::before {
    background: #1f2937;
    box-shadow: -2px -2px 4px rgba(0, 0, 0, 0.2);
}

/* Show tooltip on hover (desktop) */
@media (hover: hover) {
    .metric-tooltip-trigger:hover .metric-tooltip,
    .metric-tooltip-trigger:focus-within .metric-tooltip {
        opacity: 1;
        visibility: visible;
        transform: translateY(0) scale(1);
        pointer-events: auto;
    }
}

/* Tooltip content styling */
.metric-tooltip-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
    padding-bottom: 12px;
    border-bottom: 1px solid #e5e7eb;
}

.dark .metric-tooltip-header {
    border-color: #374151;
}

.metric-tooltip-icon {
    font-size: 24px;
    line-height: 1;
}

.metric-tooltip-title {
    font-size: 16px;
    font-weight: 700;
    color: #111827;
    line-height: 1.2;
}

.dark .metric-tooltip-title {
    color: #f9fafb;
}

.metric-tooltip-subtitle {
    font-size: 11px;
    font-weight: 600;
    color: #6b7280;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: 2px;
}

.dark .metric-tooltip-subtitle {
    color: #9ca3af;
}

.metric-tooltip-section {
    margin-bottom: 10px;
}

.metric-tooltip-section:last-child {
    margin-bottom: 0;
}

.metric-tooltip-label {
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #9ca3af;
    margin-bottom: 4px;
}

.dark .metric-tooltip-label {
    color: #6b7280;
}

.metric-tooltip-text {
    font-size: 13px;
    line-height: 1.5;
    color: #374151;
}

.dark .metric-tooltip-text {
    color: #d1d5db;
}

.metric-tooltip-text strong {
    font-weight: 600;
    color: #111827;
}

.dark .metric-tooltip-text strong {
    color: #f9fafb;
}

.metric-tooltip-formula {
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 11px;
    padding: 8px 12px;
    background: #f3f4f6;
    border-radius: 8px;
    color: #4b5563;
    border: 1px solid #e5e7eb;
}

.dark .metric-tooltip-formula {
    background: #111827;
    color: #9ca3af;
    border-color: #374151;
}

/* Mobile tooltip - bottom sheet style */
@media (hover: none) and (pointer: coarse) {
    .metric-tooltip-trigger {
        -webkit-tap-highlight-color: transparent;
    }

    .metric-tooltip {
        position: fixed;
        left: 16px !important;
        right: 16px;
        bottom: calc(80px + env(safe-area-inset-bottom, 0px));
        top: auto !important;
        margin-left: 0;
        width: auto;
        max-height: 60vh;
        overflow-y: auto;
        border-radius: 20px;
        transform: translateY(100%);
    }

    .metric-tooltip::before {
        display: none;
    }

    .metric-tooltip.tooltip-visible {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
        pointer-events: auto;
    }

    /* Backdrop for mobile */
    .tooltip-backdrop {
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.4);
        z-index: 99;
        opacity: 0;
        visibility: hidden;
        transition: all 0.2s ease;
    }

    .tooltip-backdrop.visible {
        opacity: 1;
        visibility: visible;
    }
}

/* ============================================================================
   WORLD-CLASS METRIC PANEL ENHANCEMENTS
   ============================================================================ */

/* Premium metric panel with refined styling */
.metric-panel-premium {
    background: white;
    border-radius: 20px;
    border: 1px solid rgba(0, 0, 0, 0.06);
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow:
        0 1px 3px rgba(0, 0, 0, 0.04),
        0 4px 12px rgba(0, 0, 0, 0.03);
}

.dark .metric-panel-premium {
    background: #1f2937;
    border-color: rgba(255, 255, 255, 0.06);
    box-shadow:
        0 1px 3px rgba(0, 0, 0, 0.2),
        0 4px 12px rgba(0, 0, 0, 0.15);
}

/* Desktop hover lift effect */
@media (hover: hover) {
    .metric-panel-premium:hover {
        transform: translateY(-2px);
        box-shadow:
            0 8px 25px rgba(0, 0, 0, 0.08),
            0 4px 12px rgba(0, 0, 0, 0.04);
    }

    .dark .metric-panel-premium:hover {
        box-shadow:
            0 8px 25px rgba(0, 0, 0, 0.3),
            0 4px 12px rgba(0, 0, 0, 0.2);
    }
}

/* Panel header with gradient background */
.metric-panel-header {
    padding: 16px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    transition: background 0.2s ease;
    -webkit-tap-highlight-color: transparent;
}

.metric-panel-header:active {
    transform: scale(0.995);
}

/* Panel icon badge */
.metric-panel-icon {
    width: 44px;
    height: 44px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.metric-panel-premium:hover .metric-panel-icon {
    transform: scale(1.05);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.15);
}

/* Panel title section */
.metric-panel-titles {
    display: flex;
    flex-direction: column;
    gap: 2px;
    flex: 1;
    min-width: 0;
}

.metric-panel-title {
    font-size: 15px;
    font-weight: 700;
    color: #111827;
    line-height: 1.3;
}

.dark .metric-panel-title {
    color: #f9fafb;
}

.metric-panel-subtitle {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    opacity: 0.9;
}

/* Panel expand indicator */
.metric-panel-expand {
    width: 24px;
    height: 24px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.05);
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.dark .metric-panel-expand {
    background: rgba(255, 255, 255, 0.1);
}

.metric-panel-expand svg {
    width: 14px;
    height: 14px;
    color: #6b7280;
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.metric-panel-expanded .metric-panel-expand svg {
    transform: rotate(180deg);
}

/* Panel explanation section */
.metric-panel-explanation {
    padding: 16px 20px;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
    font-size: 13px;
    line-height: 1.6;
    color: #4b5563;
}

.dark .metric-panel-explanation {
    border-color: rgba(255, 255, 255, 0.05);
    color: #9ca3af;
}

.metric-panel-explanation strong {
    font-weight: 600;
}

/* Panel items list */
.metric-panel-items {
    padding: 12px 16px 16px;
    max-height: 240px;
    overflow-y: auto;
    scroll-behavior: smooth;
}

/* Smooth scrollbar for panel items */
.metric-panel-items::-webkit-scrollbar {
    width: 4px;
}

.metric-panel-items::-webkit-scrollbar-track {
    background: transparent;
}

.metric-panel-items::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.1);
    border-radius: 4px;
}

.dark .metric-panel-items::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
}

/* Individual metric item */
.metric-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.15s ease;
    margin-bottom: 4px;
    -webkit-tap-highlight-color: transparent;
}

.metric-item:last-child {
    margin-bottom: 0;
}

.metric-item:hover {
    background: rgba(0, 0, 0, 0.04);
}

.dark .metric-item:hover {
    background: rgba(255, 255, 255, 0.06);
}

.metric-item:active {
    transform: scale(0.98);
}

/* Rank badge in metric items */
.metric-item-rank {
    width: 26px;
    height: 26px;
    border-radius: 9px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 700;
    flex-shrink: 0;
    transition: transform 0.15s ease;
}

.metric-item:hover .metric-item-rank {
    transform: scale(1.1);
}

/* Metric item title */
.metric-item-title {
    flex: 1;
    min-width: 0;
    font-size: 13px;
    font-weight: 500;
    color: #374151;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: color 0.15s ease;
}

.dark .metric-item-title {
    color: #d1d5db;
}

/* Metric item score badge */
.metric-item-score {
    font-size: 10px;
    font-weight: 600;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    padding: 4px 8px;
    border-radius: 6px;
    flex-shrink: 0;
    transition: all 0.15s ease;
}

/* ============================================================================
   MOBILE-SPECIFIC OPTIMIZATIONS
   ============================================================================ */

@media (max-width: 640px) {
    /* Larger touch targets on mobile */
    .metric-panel-header {
        padding: 14px 16px;
        min-height: 64px;
    }

    .metric-panel-icon {
        width: 40px;
        height: 40px;
        font-size: 20px;
        border-radius: 12px;
    }

    .metric-panel-title {
        font-size: 14px;
    }

    .metric-panel-subtitle {
        font-size: 10px;
    }

    .metric-item {
        padding: 12px;
        min-height: 52px;
    }

    .metric-item-rank {
        width: 28px;
        height: 28px;
    }

    .metric-item-title {
        font-size: 14px;
    }

    /* Full-width panels on mobile */
    .metric-panel-premium {
        border-radius: 16px;
    }

    /* Bottom sheet style expansion on mobile */
    .metric-panel-explanation {
        padding: 14px 16px;
        font-size: 14px;
    }
}

/* ============================================================================
   SCORE BREAKDOWN VISUALIZATION ENHANCEMENTS
   ============================================================================ */

/* Stacked breakdown bar */
.score-breakdown-bar {
    display: flex;
    height: 8px;
    border-radius: 4px;
    overflow: hidden;
    background: #f3f4f6;
    gap: 1px;
}

.dark .score-breakdown-bar {
    background: #374151;
}

.score-breakdown-segment {
    height: 100%;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
}

/* Segment hover effect */
@media (hover: hover) {
    .score-breakdown-segment:hover {
        filter: brightness(1.1);
        transform: scaleY(1.3);
    }
}

/* Individual breakdown item rows */
.breakdown-row {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 0;
}

.breakdown-label {
    display: flex;
    align-items: center;
    gap: 6px;
    width: 100px;
    flex-shrink: 0;
}

.breakdown-label-icon {
    font-size: 14px;
}

.breakdown-label-text {
    font-size: 12px;
    font-weight: 500;
    color: #6b7280;
}

.dark .breakdown-label-text {
    color: #9ca3af;
}

.breakdown-bar-container {
    flex: 1;
    height: 10px;
    background: #f3f4f6;
    border-radius: 5px;
    overflow: hidden;
}

.dark .breakdown-bar-container {
    background: #374151;
}

.breakdown-bar-fill {
    height: 100%;
    border-radius: 5px;
    transition: width 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.breakdown-value {
    width: 48px;
    text-align: right;
    font-size: 12px;
    font-weight: 600;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    color: #6b7280;
    flex-shrink: 0;
}

.dark .breakdown-value {
    color: #9ca3af;
}

/* ============================================================================
   VELOCITY CHART ENHANCEMENTS
   ============================================================================ */

.velocity-chart {
    display: flex;
    align-items: flex-end;
    gap: 4px;
    height: 64px;
    padding: 0 4px;
}

.velocity-bar-wrapper {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.velocity-bar {
    width: 100%;
    min-height: 4px;
    border-radius: 4px 4px 0 0;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
}

.velocity-bar::after {
    content: attr(data-value);
    position: absolute;
    bottom: calc(100% + 4px);
    left: 50%;
    transform: translateX(-50%);
    font-size: 9px;
    font-weight: 600;
    opacity: 0;
    transition: opacity 0.2s ease;
    white-space: nowrap;
}

.velocity-bar:hover::after {
    opacity: 1;
}

.velocity-bar:hover {
    filter: brightness(1.1);
}

.velocity-label {
    font-size: 8px;
    color: #9ca3af;
    font-weight: 500;
}

/* ============================================================================
   GLASSMORPHISM CARD VARIANT
   ============================================================================ */

.card-glass {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
}

.dark .card-glass {
    background: rgba(31, 41, 55, 0.8);
    border-color: rgba(255, 255, 255, 0.1);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

/* ============================================================================
   PREMIUM BUTTON STYLES
   ============================================================================ */

.btn-premium {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 20px;
    font-size: 14px;
    font-weight: 600;
    border-radius: 12px;
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    -webkit-tap-highlight-color: transparent;
    cursor: pointer;
    border: none;
    outline: none;
}

.btn-premium:active {
    transform: scale(0.97);
}

.btn-premium:focus-visible {
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.3);
}

.btn-premium-primary {
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    color: white;
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.4);
}

.btn-premium-primary:hover {
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
    transform: translateY(-1px);
}

.btn-premium-secondary {
    background: rgba(0, 0, 0, 0.05);
    color: #374151;
}

.dark .btn-premium-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: #e5e7eb;
}

.btn-premium-secondary:hover {
    background: rgba(0, 0, 0, 0.08);
}

.dark .btn-premium-secondary:hover {
    background: rgba(255, 255, 255, 0.15);
}

/* ============================================================================
   ANIMATION KEYFRAMES
   ============================================================================ */

@keyframes tooltip-enter {
    from {
        opacity: 0;
        transform: translateY(8px) scale(0.96);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes sheet-enter {
    from {
        opacity: 0;
        transform: translateY(100%);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse-glow {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(99, 102, 241, 0.4);
    }
    50% {
        box-shadow: 0 0 0 8px rgba(99, 102, 241, 0);
    }
}

.animate-pulse-glow {
    animation: pulse-glow 2s infinite;
}

/* ============================================================================
   RESPONSIVE GRID UTILITIES
   ============================================================================ */

.insights-grid {
    display: grid;
    gap: 16px;
}

/* 1 column on mobile */
@media (max-width: 640px) {
    .insights-grid {
        grid-template-columns: 1fr;
    }
}

/* 2 columns on tablet */
@media (min-width: 641px) and (max-width: 1023px) {
    .insights-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 4 columns on desktop */
@media (min-width: 1024px) {
    .insights-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 20px;
    }

    .insights-grid .metric-panel-expanded {
        grid-column: span 2;
    }
}

/* =============================================================================
   Reduced Motion Support - Accessibility
   ============================================================================= */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    /* Disable specific animations */
    .animate-spin,
    .animate-pulse,
    .animate-bounce {
        animation: none !important;
    }

    /* Disable transform transitions (scale, translate, etc.) */
    .hover\:scale-\[1\.02\]:hover,
    .active\:scale-95:active,
    .group-hover\:scale-110:hover {
        transform: none !important;
    }

    /* Keep opacity transitions very brief for visual feedback */
    [x-transition\:enter],
    [x-transition\:leave] {
        transition-duration: 0.01ms !important;
    }
}