/* ============================================================
   InstanceIQ — Design System
   Cyberpunk neon · Dark + Light · devopscaptain
   ============================================================ */

/* ─── Design Tokens — Dark (default) ──────────────────────── */
:root {
    /* Backgrounds */
    --bg-primary: #050B16;
    --bg-secondary: #090F1E;
    --bg-tertiary: #0E1828;
    --bg-card: rgba(9, 15, 30, 0.90);
    --bg-glass: rgba(0, 212, 255, 0.04);
    --bg-glass-hover: rgba(0, 212, 255, 0.09);

    /* Text */
    --text-primary: #DDEEFF;
    --text-secondary: #5A8AAA;
    --text-tertiary: #3A6080;
    --text-muted: #1E4060;

    /* Primary accent — neon cyan */
    --accent-primary: #00D4FF;
    --accent-primary-light: #66E5FF;
    --accent-primary-dark: #0099BB;

    /* Neon palette */
    --neon-magenta: #FF0080;
    --neon-green: #00FF88;
    --neon-purple: #9D00FF;
    --neon-yellow: #FFD700;
    --neon-orange: #FF6A00;

    /* Component accents (remapped) */
    --accent-blue: #0088FF;
    --accent-purple: #9D00FF;
    --accent-green: #00FF88;
    --accent-red: #FF2060;
    --accent-cyan: #00D4FF;
    --accent-pink: #FF0080;

    /* Grid + blob theming */
    --grid-color: rgba(0, 212, 255, 0.038);
    --blob-1: rgba(0, 212, 255, 0.10);
    --blob-2: rgba(255, 0, 128, 0.07);
    --blob-3: rgba(157, 0, 255, 0.07);
    --blob-4: rgba(0, 255, 136, 0.04);

    /* Borders */
    --border-subtle: rgba(0, 212, 255, 0.09);
    --border-medium: rgba(0, 212, 255, 0.20);
    --border-strong: rgba(0, 212, 255, 0.38);

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.6);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.7);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.75);
    --shadow-xl: 0 16px 72px rgba(0, 0, 0, 0.85);
    --shadow-glow: 0 0 60px rgba(0, 212, 255, 0.12);

    /* Radius — slightly sharper for cyberpunk */
    --radius-sm: 4px;
    --radius-md: 7px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;

    /* Transitions */
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
    --duration-fast: 150ms;
    --duration-normal: 300ms;
    --duration-slow: 500ms;

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
}

/* ─── Light Theme ─────────────────────────────────────────── */
[data-theme="light"] {
    --bg-primary: #EDF3FF;
    --bg-secondary: #E2EAFC;
    --bg-tertiary: #D4E0F8;
    --bg-card: rgba(255, 255, 255, 0.96);
    --bg-glass: rgba(0, 100, 200, 0.04);
    --bg-glass-hover: rgba(0, 100, 200, 0.09);

    --text-primary: #050B16;
    --text-secondary: #1A3A5C;
    --text-tertiary: #3A5A7A;
    --text-muted: #6A8AAA;

    --accent-primary: #0077CC;
    --accent-primary-light: #3399EE;
    --accent-primary-dark: #005599;

    --neon-magenta: #CC0055;
    --neon-green: #007744;
    --neon-purple: #6600CC;

    --accent-blue: #0055CC;
    --accent-purple: #6600CC;
    --accent-green: #007744;
    --accent-red: #CC1144;
    --accent-cyan: #0077CC;
    --accent-pink: #CC0055;

    --grid-color: rgba(0, 100, 200, 0.065);
    --blob-1: rgba(0, 119, 204, 0.08);
    --blob-2: rgba(204, 0, 85, 0.05);
    --blob-3: rgba(102, 0, 204, 0.05);
    --blob-4: rgba(0, 119, 68, 0.03);

    --border-subtle: rgba(0, 100, 200, 0.10);
    --border-medium: rgba(0, 100, 200, 0.22);
    --border-strong: rgba(0, 100, 200, 0.38);

    --shadow-sm: 0 1px 3px rgba(0, 40, 100, 0.10);
    --shadow-md: 0 4px 16px rgba(0, 40, 100, 0.13);
    --shadow-lg: 0 8px 40px rgba(0, 40, 100, 0.16);
    --shadow-xl: 0 16px 72px rgba(0, 40, 100, 0.22);
    --shadow-glow: 0 0 60px rgba(0, 119, 204, 0.10);
}


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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
    background-image:
        linear-gradient(var(--grid-color) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
    background-size: 44px 44px;
    transition: background-color var(--duration-slow) var(--ease-out),
                color var(--duration-slow) var(--ease-out);
}


/* ─── Animated Background ─────────────────────────────────── */
.bg-particles {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
}

.bg-particles::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background:
        radial-gradient(circle at 15% 45%, var(--blob-1) 0%, transparent 45%),
        radial-gradient(circle at 85% 20%, var(--blob-2) 0%, transparent 40%),
        radial-gradient(circle at 60% 85%, var(--blob-3) 0%, transparent 42%),
        radial-gradient(circle at 38% 8%,  var(--blob-4) 0%, transparent 35%);
    animation: bgFloat 30s ease-in-out infinite;
}

@keyframes bgFloat {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(-2%, 3%) rotate(1deg); }
    66% { transform: translate(2%, -1%) rotate(-1deg); }
}

.particle {
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
    opacity: 0;
    animation: particleFloat linear infinite;
}

@keyframes particleFloat {
    0%   { opacity: 0; transform: translateY(100vh) scale(0); }
    10%  { opacity: 0.7; }
    90%  { opacity: 0.3; }
    100% { opacity: 0; transform: translateY(-10vh) scale(1); }
}


/* ─── Navigation ──────────────────────────────────────────── */
.main-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(5, 11, 22, 0.80);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-subtle);
    transition: all var(--duration-normal) var(--ease-out);
}

[data-theme="light"] .main-nav {
    background: rgba(237, 243, 255, 0.85);
}

.main-nav.scrolled {
    background: rgba(5, 11, 22, 0.97);
    box-shadow: 0 0 0 1px var(--border-subtle), 0 4px 24px rgba(0, 212, 255, 0.06);
}

[data-theme="light"] .main-nav.scrolled {
    background: rgba(237, 243, 255, 0.98);
    box-shadow: 0 0 0 1px var(--border-subtle), var(--shadow-md);
}

.nav-inner {
    max-width: 1800px;
    margin: 0 auto;
    padding: 0 32px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.brand-icon {
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 212, 255, 0.08);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-medium);
    transition: all var(--duration-fast);
    flex-shrink: 0;
}

.brand-icon:hover {
    background: rgba(0, 212, 255, 0.14);
    box-shadow: 0 0 16px rgba(0, 212, 255, 0.2);
}

.brand-text-group {
    display: flex;
    flex-direction: column;
    gap: 1px;
}

.brand-product {
    font-weight: 800;
    font-size: 18px;
    background: linear-gradient(135deg, var(--accent-primary-light), var(--accent-primary), var(--neon-magenta));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.02em;
    line-height: 1;
}

.brand-author {
    font-family: var(--font-mono);
    font-size: 10px;
    font-weight: 500;
    color: var(--text-tertiary);
    letter-spacing: 0.04em;
    line-height: 1;
}

.nav-controls {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* Theme Toggle */
.theme-toggle {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-glass);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--duration-fast);
    flex-shrink: 0;
}

.theme-toggle:hover {
    background: rgba(0, 212, 255, 0.10);
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    box-shadow: 0 0 12px rgba(0, 212, 255, 0.2);
}

.theme-toggle .icon-sun  { display: none; }
.theme-toggle .icon-moon { display: block; }
[data-theme="light"] .theme-toggle .icon-sun  { display: block; }
[data-theme="light"] .theme-toggle .icon-moon { display: none; }


/* ─── Hero Section ────────────────────────────────────────── */
.hero {
    position: relative;
    z-index: 1;
    padding: 120px 24px 60px;
    text-align: center;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: min(1000px, 100%);
    height: 560px;
    background: radial-gradient(ellipse at 50% 30%,
        rgba(0, 212, 255, 0.13) 0%,
        rgba(157, 0, 255, 0.07) 45%,
        transparent 70%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 7px 18px;
    background: rgba(0, 212, 255, 0.07);
    border: 1px solid rgba(0, 212, 255, 0.28);
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 600;
    font-family: var(--font-mono);
    color: var(--accent-primary);
    margin-bottom: 32px;
    letter-spacing: 0.04em;
    animation: fadeInUp 0.8s var(--ease-out) 0.1s both;
    box-shadow: 0 0 24px rgba(0, 212, 255, 0.10), inset 0 1px 0 rgba(0, 212, 255, 0.08);
}

.badge-dot {
    width: 7px;
    height: 7px;
    background: var(--neon-green);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
    box-shadow: 0 0 6px var(--neon-green);
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(0.8); }
}

.hero-title {
    font-size: clamp(32px, 6vw, 64px);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 24px;
}

.title-line {
    display: block;
    animation: fadeInUp 0.8s var(--ease-out) both;
}

.title-line:nth-child(1) { animation-delay: 0.2s; }
.title-line:nth-child(2) { animation-delay: 0.35s; }
.title-line:nth-child(3) { animation-delay: 0.5s; }

.title-gradient {
    background: linear-gradient(135deg, var(--accent-primary), var(--neon-magenta), var(--accent-primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    background-size: 200% auto;
    animation: fadeInUp 0.8s var(--ease-out) 0.35s both, gradientShift 6s ease-in-out infinite;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% center; }
    50% { background-position: 100% center; }
}

.hero-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 48px;
    line-height: 1.7;
    animation: fadeInUp 0.8s var(--ease-out) 0.6s both;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    max-width: 700px;
    margin: 0 auto;
    animation: fadeInUp 0.8s var(--ease-out) 0.8s both;
}

.stat-card {
    background: var(--bg-glass);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 20px 16px;
    transition: all var(--duration-normal) var(--ease-out);
}

.stat-card:hover {
    background: var(--bg-glass-hover);
    border-color: rgba(0, 212, 255, 0.35);
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3), 0 0 24px rgba(0, 212, 255, 0.10);
}

.stat-number {
    font-size: 28px;
    font-weight: 800;
    font-family: var(--font-mono);
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 11px;
    color: var(--text-tertiary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-top: 4px;
    font-family: var(--font-mono);
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(24px); }
    to   { opacity: 1; transform: translateY(0); }
}


/* ─── Main Content ────────────────────────────────────────── */
.main-content {
    position: relative;
    z-index: 1;
    max-width: 1800px;
    margin: 0 auto;
    padding: 0 32px 140px;
}


/* ─── Tab Bar ─────────────────────────────────────────────── */
.tab-bar {
    display: flex;
    gap: 4px;
    padding: 4px;
    background: var(--bg-glass);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    margin-bottom: 24px;
    overflow-x: auto;
}

.tab-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 11px 22px;
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    white-space: nowrap;
    transition: all var(--duration-normal) var(--ease-out);
    letter-spacing: 0.01em;
}

.tab-btn:hover {
    color: var(--accent-primary);
    background: rgba(0, 212, 255, 0.06);
}

.tab-btn.active {
    color: var(--bg-primary);
    background: var(--accent-primary);
    box-shadow: 0 2px 24px rgba(0, 212, 255, 0.50), 0 0 0 1px rgba(0, 212, 255, 0.35);
}

[data-theme="light"] .tab-btn.active {
    color: #fff;
}

.tab-btn.active svg {
    stroke: var(--bg-primary);
}

[data-theme="light"] .tab-btn.active svg {
    stroke: #fff;
}


/* ─── Filter Bar ──────────────────────────────────────────── */
.filter-bar {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 32px;
}

.search-box {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 20px;
    background: var(--bg-glass);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    transition: all var(--duration-fast);
}

.search-box:focus-within {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.12), 0 0 28px rgba(0, 212, 255, 0.08);
}

.search-box svg {
    color: var(--text-tertiary);
    flex-shrink: 0;
}

.search-box input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 14px;
}

.search-box input::placeholder {
    color: var(--text-muted);
}

.filter-chips {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 4px;
    -webkit-overflow-scrolling: touch;
}

.chip {
    padding: 7px 16px;
    background: var(--bg-glass);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    white-space: nowrap;
    transition: all var(--duration-fast);
    letter-spacing: 0.03em;
}

.chip:hover {
    background: rgba(0, 212, 255, 0.07);
    border-color: rgba(0, 212, 255, 0.30);
    color: var(--accent-primary);
}

.chip.active {
    background: rgba(0, 212, 255, 0.12);
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    box-shadow: 0 0 10px rgba(0, 212, 255, 0.15);
}


/* ─── Loading & Error States ──────────────────────────────── */
.loading-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 80px 20px;
    gap: 24px;
}

.loader {
    position: relative;
    width: 60px;
    height: 60px;
}

.loader-ring {
    position: absolute;
    inset: 0;
    border-radius: 50%;
    border: 3px solid transparent;
    animation: loaderSpin 1.5s linear infinite;
}

.loader-ring:nth-child(1) {
    border-top-color: var(--accent-primary);
    animation-duration: 1.5s;
}

.loader-ring:nth-child(2) {
    inset: 6px;
    border-right-color: var(--neon-magenta);
    animation-duration: 2s;
    animation-direction: reverse;
}

.loader-ring:nth-child(3) {
    inset: 12px;
    border-bottom-color: var(--neon-purple);
    animation-duration: 2.5s;
}

@keyframes loaderSpin {
    to { transform: rotate(360deg); }
}

.loading-text {
    color: var(--text-secondary);
    font-size: 14px;
    font-family: var(--font-mono);
    animation: pulse 2s ease-in-out infinite;
}

.error-state {
    text-align: center;
    padding: 32px 20px;
    background: rgba(255, 32, 96, 0.06);
    border: 1px solid rgba(255, 32, 96, 0.18);
    border-radius: var(--radius-lg);
    margin-bottom: 32px;
}

.error-icon {
    font-size: 36px;
    margin-bottom: 12px;
}

.error-state h3 {
    color: var(--accent-primary-light);
    font-size: 18px;
    margin-bottom: 8px;
}

.error-state p {
    color: var(--text-secondary);
    font-size: 14px;
    font-family: var(--font-mono);
}


/* ─── Tab Content ─────────────────────────────────────────── */
.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.4s var(--ease-out);
}

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


/* ─── Family Cards Grid ──────────────────────────────────── */
.families-grid {
    display: grid;
    gap: 16px;
    grid-template-columns: repeat(2, 1fr);
}

.family-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--duration-normal) var(--ease-out);
    animation: cardAppear 0.6s var(--ease-out) both;
    backdrop-filter: blur(12px);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.family-card:hover {
    border-color: var(--card-accent, var(--border-medium));
    transform: translateY(-4px);
    box-shadow:
        0 24px 64px rgba(0, 0, 0, 0.55),
        0 0 0 1px var(--card-accent, transparent),
        0 0 48px -12px var(--card-accent, transparent);
}

@keyframes cardAppear {
    from { opacity: 0; transform: translateY(30px) scale(0.97); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
}

.family-card-header {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 24px 24px 18px;
}

.family-icon-wrapper {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    font-size: 26px;
    flex-shrink: 0;
    position: relative;
    overflow: hidden;
    transition: transform var(--duration-normal) var(--ease-spring),
                box-shadow var(--duration-normal) var(--ease-out);
}

.family-card:hover .family-icon-wrapper {
    transform: scale(1.10) rotate(-4deg);
    box-shadow: 0 0 28px var(--card-accent, transparent);
}

.family-icon-wrapper::before {
    content: '';
    position: absolute;
    inset: 0;
    opacity: 0.15;
    border-radius: inherit;
}

.family-header-text {
    flex: 1;
    min-width: 0;
}

.family-category {
    font-family: var(--font-mono);
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.10em;
    margin-bottom: 4px;
    opacity: 0.9;
}

.family-name {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 3px;
    letter-spacing: -0.01em;
}

.family-headline {
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 400;
}

.family-count-badge {
    padding: 5px 12px;
    border-radius: var(--radius-sm);
    font-size: 11px;
    font-weight: 700;
    font-family: var(--font-mono);
    flex-shrink: 0;
    border: 1px solid rgba(255, 255, 255, 0.10);
    letter-spacing: 0.04em;
}

.family-card-body {
    padding: 0 24px 22px;
}

/* Reasoning Section */
.reasoning-section {
    background: var(--bg-glass);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 18px;
    margin-bottom: 16px;
}

.reasoning-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--accent-primary);
    margin-bottom: 10px;
}

.reasoning-text {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 14px;
}

/* Use-case Tags */
.usecase-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

.usecase-group h4 {
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.usecase-group.best h4  { color: var(--accent-green); }
.usecase-group.avoid h4 { color: var(--accent-red); }

.usecase-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
}

.usecase-tag {
    padding: 3px 10px;
    border-radius: var(--radius-sm);
    font-size: 11px;
    font-weight: 600;
    font-family: var(--font-mono);
    animation: tagAppear 0.3s var(--ease-out) both;
}

.usecase-tag.best {
    background: rgba(0, 255, 136, 0.08);
    border: 1px solid rgba(0, 255, 136, 0.22);
    color: var(--accent-green);
}

.usecase-tag.avoid {
    background: rgba(255, 32, 96, 0.08);
    border: 1px solid rgba(255, 32, 96, 0.18);
    color: var(--accent-red);
}

@keyframes tagAppear {
    from { opacity: 0; transform: scale(0.85); }
    to   { opacity: 1; transform: scale(1); }
}

/* Key Specs */
.key-specs {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: 8px;
    margin-bottom: 16px;
}

.spec-item {
    background: var(--bg-glass);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 10px;
    transition: all var(--duration-fast);
}

.spec-item:hover {
    border-color: var(--border-medium);
    background: var(--bg-glass-hover);
}

.spec-label {
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 700;
    margin-bottom: 3px;
}

.spec-value {
    font-size: 13px;
    font-weight: 700;
    font-family: var(--font-mono);
    color: var(--accent-primary);
}

/* Instance Types Toggle */
.instance-types-section {
    margin-top: 14px;
}

.instances-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 14px;
    background: var(--bg-glass);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--duration-fast);
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    width: 100%;
    letter-spacing: 0.03em;
}

.instances-toggle:hover {
    background: rgba(0, 212, 255, 0.07);
    border-color: var(--border-medium);
    color: var(--accent-primary);
}

.instances-toggle .toggle-icon {
    transition: transform var(--duration-normal) var(--ease-out);
    font-size: 14px;
}

.instances-toggle.expanded .toggle-icon {
    transform: rotate(180deg);
}

.instances-list {
    overflow: hidden;
    height: 0;
    opacity: 0;
    margin-top: 0;
    transition: height 0.4s var(--ease-out), opacity 0.3s var(--ease-out), margin-top 0.4s var(--ease-out);
}

.instances-list.expanded {
    opacity: 1;
    margin-top: 10px;
}

/* Separate scroll wrapper — overflow-x:auto can't coexist with overflow:hidden on height-animated parent */
.table-scroll {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.instances-table {
    width: 100%;
    min-width: 600px;
    border-collapse: separate;
    border-spacing: 0;
    font-size: 12px;
}

.instances-table thead th {
    padding: 9px 12px;
    text-align: left;
    font-family: var(--font-mono);
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--accent-primary);
    border-bottom: 1px solid var(--border-medium);
    position: sticky;
    top: 0;
    background: var(--bg-secondary);
    z-index: 2;
}

.instances-table tbody tr {
    transition: background var(--duration-fast);
    animation: rowAppear 0.3s var(--ease-out) both;
}

.instances-table tbody tr:nth-child(even) {
    background: rgba(0, 212, 255, 0.02);
}

.instances-table tbody tr:hover {
    background: rgba(0, 212, 255, 0.06);
}

.instances-table td {
    padding: 9px 12px;
    border-bottom: 1px solid var(--border-subtle);
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 11px;
}

.instances-table td:first-child {
    color: var(--text-primary);
    font-weight: 600;
}

@keyframes rowAppear {
    from { opacity: 0; transform: translateX(-8px); }
    to   { opacity: 1; transform: translateX(0); }
}

.instance-type-name {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.gen-badge {
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-size: 9px;
    font-weight: 700;
    font-family: var(--font-mono);
    background: rgba(0, 255, 136, 0.10);
    color: var(--accent-green);
    border: 1px solid rgba(0, 255, 136, 0.22);
    letter-spacing: 0.04em;
}

.gen-badge.old {
    background: rgba(58, 96, 128, 0.15);
    color: var(--text-tertiary);
    border-color: var(--border-subtle);
}


/* ─── Engine Cards ────────────────────────────────────────── */
.engines-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 20px;
}

.engine-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--duration-normal) var(--ease-out);
    animation: cardAppear 0.6s var(--ease-out) both;
    backdrop-filter: blur(12px);
}

.engine-card:hover {
    border-color: var(--card-accent, var(--border-medium));
    transform: translateY(-6px);
    box-shadow:
        0 20px 60px rgba(0, 0, 0, 0.45),
        0 0 0 1px var(--card-accent, transparent),
        0 0 36px -10px var(--card-accent, transparent);
}

.engine-card-header {
    padding: 22px 22px 14px;
    position: relative;
    overflow: hidden;
}

.engine-card-header::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
}

.engine-icon {
    font-size: 38px;
    margin-bottom: 10px;
    display: block;
}

.engine-name {
    font-size: 18px;
    font-weight: 800;
    margin-bottom: 5px;
    letter-spacing: -0.01em;
}

.engine-headline {
    font-size: 12px;
    color: var(--text-secondary);
    font-family: var(--font-mono);
}

.engine-card-body {
    padding: 0 22px 22px;
}

.engine-reasoning {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 14px;
}

.engine-best-for {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.engine-tag {
    padding: 3px 10px;
    border-radius: var(--radius-sm);
    font-size: 11px;
    font-weight: 600;
    font-family: var(--font-mono);
    background: rgba(0, 212, 255, 0.08);
    border: 1px solid rgba(0, 212, 255, 0.18);
    color: var(--accent-primary-light);
}


/* ─── Footer ──────────────────────────────────────────────── */
.main-footer {
    position: relative;
    z-index: 1;
    border-top: 1px solid var(--border-subtle);
    padding: 28px 24px;
    text-align: center;
}

.footer-inner p {
    color: var(--text-tertiary);
    font-size: 12px;
    font-family: var(--font-mono);
}

.footer-sub {
    margin-top: 4px;
    font-size: 11px !important;
    color: var(--text-muted) !important;
}

.footer-brand {
    color: var(--accent-primary) !important;
    font-weight: 700;
}


/* ─── Utility ─────────────────────────────────────────────── */
.hidden {
    display: none !important;
}

/* Neon scrollbar */
::-webkit-scrollbar {
    width: 5px;
    height: 5px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: var(--border-medium);
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--accent-primary);
}


/* ─── Responsive ──────────────────────────────────────────── */
@media (max-width: 1100px) {
    .families-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .nav-inner {
        padding: 0 16px;
    }

    .hero {
        padding: 100px 20px 40px;
    }

    .main-content {
        padding: 0 20px 60px;
    }

    .family-card-header {
        flex-direction: column;
        gap: 12px;
    }

    .usecase-section {
        grid-template-columns: 1fr;
    }

    .key-specs {
        grid-template-columns: repeat(2, 1fr);
    }

    .engines-grid {
        grid-template-columns: 1fr;
    }

    .tab-btn span {
        display: none;
    }

    .tab-btn {
        padding: 11px 14px;
    }

    .brand-author {
        display: none;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 28px;
    }

    .hero-subtitle {
        font-size: 15px;
    }

    .stat-number {
        font-size: 22px;
    }
}


/* ─── Animation Stagger ───────────────────────────────────── */
.stagger-1  { animation-delay: 0.05s; }
.stagger-2  { animation-delay: 0.10s; }
.stagger-3  { animation-delay: 0.15s; }
.stagger-4  { animation-delay: 0.20s; }
.stagger-5  { animation-delay: 0.25s; }
.stagger-6  { animation-delay: 0.30s; }
.stagger-7  { animation-delay: 0.35s; }
.stagger-8  { animation-delay: 0.40s; }
.stagger-9  { animation-delay: 0.45s; }
.stagger-10 { animation-delay: 0.50s; }
.stagger-11 { animation-delay: 0.55s; }
.stagger-12 { animation-delay: 0.60s; }
.stagger-13 { animation-delay: 0.65s; }
.stagger-14 { animation-delay: 0.70s; }
.stagger-15 { animation-delay: 0.75s; }
.stagger-16 { animation-delay: 0.80s; }
.stagger-17 { animation-delay: 0.85s; }

.price-val {
    color: var(--accent-primary-light);
    font-weight: 700;
}

/* ─── Region Selector ─────────────────────────────────────── */
.region-selector-wrap {
    display: flex;
    align-items: center;
    gap: 7px;
    color: var(--text-tertiary);
    flex-shrink: 0;
}
.region-select {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 12px;
    padding: 6px 28px 6px 10px;
    cursor: pointer;
    outline: none;
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' fill='none' stroke='%235A8AAA' stroke-width='2'%3E%3Cpath d='M1 1l4 4 4-4'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 8px center;
    transition: border-color var(--duration-fast), box-shadow var(--duration-fast);
}
.region-select:hover,
.region-select:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 2px rgba(0, 212, 255, 0.12);
}

/* ─── Compare Row Button ───────────────────────────────────── */
.compare-row-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 26px;
    height: 26px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-subtle);
    background: transparent;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    transition: all var(--duration-fast) var(--ease-out);
    line-height: 1;
    padding: 0;
    font-family: var(--font-mono);
}
.compare-row-btn:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    background: rgba(0, 212, 255, 0.08);
    box-shadow: 0 0 8px rgba(0, 212, 255, 0.25);
}
.compare-row-btn.active {
    border-color: var(--neon-magenta);
    color: var(--neon-magenta);
    background: rgba(255, 0, 128, 0.12);
    box-shadow: 0 0 8px rgba(255, 0, 128, 0.3);
}
.compare-row-btn.disabled {
    opacity: 0.3;
    cursor: not-allowed;
    pointer-events: none;
}

/* ─── Compare Tray ─────────────────────────────────────────── */
.compare-tray {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 900;
    background: rgba(5, 11, 22, 0.97);
    border-top: 1px solid var(--border-medium);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    transform: translateY(100%);
    transition: transform var(--duration-normal) var(--ease-out);
    box-shadow: 0 -8px 40px rgba(0, 0, 0, 0.6), 0 -1px 0 rgba(0, 212, 255, 0.2);
}
.compare-tray.visible {
    transform: translateY(0);
}
.compare-tray-inner {
    max-width: 1800px;
    margin: 0 auto;
    padding: 12px 32px;
    display: flex;
    align-items: center;
    gap: 16px;
}
.compare-tray-slots {
    display: flex;
    gap: 8px;
    flex: 1;
    flex-wrap: nowrap;
    overflow: hidden;
}
.compare-slot {
    display: flex;
    align-items: center;
    gap: 6px;
    background: rgba(0, 212, 255, 0.06);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-md);
    padding: 6px 10px;
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--text-primary);
    min-width: 0;
    max-width: 220px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.compare-slot-label {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.compare-slot-remove {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 13px;
    padding: 0;
    line-height: 1;
    flex-shrink: 0;
    transition: color var(--duration-fast);
}
.compare-slot-remove:hover {
    color: var(--neon-magenta);
}
.compare-slot-empty {
    background: transparent;
    border: 1px dashed var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 6px 10px;
    min-width: 80px;
    height: 34px;
}
.compare-tray-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}
.compare-tray-hint {
    font-size: 12px;
    color: var(--text-tertiary);
    font-family: var(--font-mono);
    white-space: nowrap;
}
.compare-open-btn {
    background: linear-gradient(135deg, var(--accent-primary), var(--neon-magenta));
    color: #fff;
    border: none;
    border-radius: var(--radius-md);
    padding: 8px 20px;
    font-weight: 700;
    font-size: 13px;
    font-family: var(--font-mono);
    cursor: pointer;
    transition: all var(--duration-fast) var(--ease-out);
    white-space: nowrap;
    box-shadow: 0 0 16px rgba(0, 212, 255, 0.25);
}
.compare-open-btn:not(:disabled):hover {
    transform: translateY(-1px);
    box-shadow: 0 0 24px rgba(0, 212, 255, 0.45);
}
.compare-open-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}
.compare-clear-btn {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 7px 12px;
    font-size: 12px;
    font-family: var(--font-mono);
    cursor: pointer;
    transition: all var(--duration-fast);
}
.compare-clear-btn:hover {
    border-color: var(--neon-magenta);
    color: var(--neon-magenta);
}
.compare-copy-btn {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 7px 12px;
    font-size: 12px;
    font-family: var(--font-mono);
    cursor: pointer;
    transition: all var(--duration-fast);
    white-space: nowrap;
}
.compare-copy-btn:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}
.compare-copy-btn.copied {
    border-color: var(--neon-green);
    color: var(--neon-green);
}

/* ─── Compare Overlay ──────────────────────────────────────── */
.compare-overlay {
    position: fixed;
    inset: 0;
    z-index: 1000;
    background: rgba(5, 11, 22, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding: 40px 20px 100px;
    overflow-y: auto;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--duration-normal) var(--ease-out);
}
.compare-overlay.visible {
    opacity: 1;
    pointer-events: all;
}
.compare-modal {
    background: var(--bg-secondary);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 1400px;
    box-shadow: var(--shadow-xl), 0 0 60px rgba(0, 212, 255, 0.08);
    transform: translateY(20px);
    transition: transform var(--duration-normal) var(--ease-out);
}
.compare-overlay.visible .compare-modal {
    transform: translateY(0);
}
.compare-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 28px;
    border-bottom: 1px solid var(--border-subtle);
    gap: 12px;
    flex-wrap: wrap;
}
.compare-modal-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}
.compare-action-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 7px 14px;
    font-size: 12px;
    font-family: var(--font-mono);
    cursor: pointer;
    transition: all var(--duration-fast);
    white-space: nowrap;
}
.compare-action-btn:hover {
    border-color: var(--neon-green);
    color: var(--neon-green);
}
.compare-modal-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    font-family: var(--font-mono);
}
.compare-modal-title svg {
    color: var(--accent-primary);
}
.compare-close-btn {
    background: transparent;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    width: 32px;
    height: 32px;
    font-size: 16px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--duration-fast);
}
.compare-close-btn:hover {
    border-color: var(--neon-magenta);
    color: var(--neon-magenta);
}
.compare-modal-body {
    padding: 24px 28px 28px;
    overflow-x: auto;
}

/* ─── Compare Table ────────────────────────────────────────── */
.compare-notice {
    font-size: 12px;
    color: var(--text-tertiary);
    font-family: var(--font-mono);
    margin-bottom: 16px;
}
.compare-mixed-notice {
    background: rgba(255, 107, 0, 0.1);
    border: 1px solid rgba(255, 107, 0, 0.3);
    border-radius: var(--radius-md);
    padding: 10px 14px;
    font-size: 12px;
    color: var(--neon-orange);
    font-family: var(--font-mono);
    margin-bottom: 20px;
}
.compare-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
    min-width: 480px;
}
.compare-table th {
    padding: 10px 16px;
    text-align: left;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    border-bottom: 1px solid var(--border-medium);
    white-space: nowrap;
}
.compare-table th:first-child {
    border-radius: var(--radius-sm) 0 0 0;
    min-width: 140px;
}
.compare-table th:last-child {
    border-radius: 0 var(--radius-sm) 0 0;
}
.compare-table td {
    padding: 10px 16px;
    border-bottom: 1px solid var(--border-subtle);
    color: var(--text-primary);
    vertical-align: middle;
    font-family: var(--font-mono);
    font-size: 12px;
}
.compare-table tr:last-child td {
    border-bottom: none;
}
.compare-table tr:hover td {
    background: var(--bg-glass);
}
.compare-row-label {
    color: var(--text-secondary);
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.compare-instance-header {
    text-align: center;
    padding: 14px 16px;
}
.compare-instance-name {
    font-family: var(--font-mono);
    font-size: 14px;
    font-weight: 700;
    color: var(--accent-primary);
    margin-bottom: 4px;
}
.compare-instance-type-label {
    font-size: 10px;
    color: var(--text-tertiary);
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}
.compare-val {
    text-align: center;
    font-size: 13px;
}
.compare-val-best {
    color: var(--neon-green) !important;
    font-weight: 700;
    background: rgba(0, 255, 136, 0.06) !important;
    position: relative;
}
.compare-val-worst {
    color: var(--accent-red) !important;
    background: rgba(255, 32, 96, 0.06) !important;
}
.compare-val-best::after {
    content: ' ↑';
    font-size: 10px;
    opacity: 0.8;
}
.compare-section-header td {
    background: var(--bg-tertiary);
    color: var(--accent-primary);
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 8px 16px;
    border-bottom: 1px solid var(--border-medium);
}

/* Light theme adjustments */
[data-theme="light"] .compare-tray {
    background: rgba(237, 243, 255, 0.97);
    border-top-color: rgba(0, 100, 200, 0.25);
    box-shadow: 0 -4px 24px rgba(0, 0, 0, 0.12);
}
[data-theme="light"] .compare-modal {
    background: var(--bg-secondary);
}
[data-theme="light"] .compare-table th {
    background: var(--bg-tertiary);
}