/* ═══════════════════════════════════════════
   COSMICOS — Landing Page Styles
   Design: Clean modern SaaS, light/dark theme
   ═══════════════════════════════════════════ */

/* ─── Light Theme (Default) ─── */
:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-tertiary: #f3f4f6;
    --bg-card: #ffffff;
    --bg-card-hover: #fafbfc;
    --bg-nav: rgba(255, 255, 255, 0.85);

    --text-primary: #111827;
    --text-secondary: #4b5563;
    --text-muted: #9ca3af;

    --accent: #6366f1;
    --accent-hover: #4f46e5;
    --accent-light: rgba(99, 102, 241, 0.08);
    --accent-border: rgba(99, 102, 241, 0.2);
    --accent-gradient: linear-gradient(135deg, #6366f1, #8b5cf6);

    --success: #22c55e;
    --success-bg: rgba(34, 197, 94, 0.08);
    --success-border: rgba(34, 197, 94, 0.2);
    --danger: #ef4444;
    --danger-bg: rgba(239, 68, 68, 0.08);
    --danger-border: rgba(239, 68, 68, 0.2);

    --border: #e5e7eb;
    --border-hover: #d1d5db;

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.08);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.1);

    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    --nav-height: 64px;
    --container-max: 1140px;

    color-scheme: light;
}

/* ─── Dark Theme ─── */
[data-theme="dark"] {
    --bg-primary: #09090b;
    --bg-secondary: #18181b;
    --bg-tertiary: #1e1e24;
    --bg-card: #18181b;
    --bg-card-hover: #1e1e24;
    --bg-nav: rgba(9, 9, 11, 0.88);

    --text-primary: #fafafa;
    --text-secondary: #a1a1aa;
    --text-muted: #52525b;

    --accent: #818cf8;
    --accent-hover: #6366f1;
    --accent-light: rgba(129, 140, 248, 0.1);
    --accent-border: rgba(129, 140, 248, 0.2);
    --accent-gradient: linear-gradient(135deg, #818cf8, #a78bfa);

    --success: #4ade80;
    --success-bg: rgba(74, 222, 128, 0.1);
    --success-border: rgba(74, 222, 128, 0.2);
    --danger: #f87171;
    --danger-bg: rgba(248, 113, 113, 0.1);
    --danger-border: rgba(248, 113, 113, 0.2);

    --border: #27272a;
    --border-hover: #3f3f46;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.35);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.4);

    color-scheme: dark;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-main);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
    transition: background 0.3s ease, color 0.3s ease;
}

a {
    color: inherit;
    text-decoration: none;
}

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

/* Cursor Trail */
.cursor-trail {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 9999;
    pointer-events: none;
}

/* ─── Navigation ─── */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    z-index: 1000;
    background: transparent;
    transition: background 0.3s ease, border-color 0.3s ease, backdrop-filter 0.3s ease;
}

.navbar.scrolled {
    background: var(--bg-nav);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    font-size: 1.2rem;
    z-index: 1001;
}

.logo-icon {
    font-size: 1.5rem;
    color: var(--accent);
}

.logo-text {
    color: var(--text-primary);
    transition: color 0.3s ease;
}

.logo-highlight {
    color: var(--accent);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color 0.2s ease;
}

.nav-link:hover {
    color: var(--text-primary);
}

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

.nav-cta {
    font-size: 0.875rem;
    font-weight: 600;
    padding: 8px 20px;
    background: var(--accent);
    border-radius: 8px;
    color: white;
    transition: all 0.2s ease;
}

.nav-cta:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

/* Theme Toggle */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg-card);
    cursor: pointer;
    transition: all 0.2s ease;
    color: var(--text-secondary);
    z-index: 1001;
}

.theme-toggle:hover {
    border-color: var(--border-hover);
    color: var(--text-primary);
    background: var(--bg-tertiary);
}

.theme-toggle svg {
    width: 18px;
    height: 18px;
}

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

[data-theme="dark"] .theme-toggle .icon-moon {
    display: block;
}

/* Mobile Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 1001;
    padding: 4px;
}

.nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text-primary);
    transition: all 0.3s;
    border-radius: 1px;
}

/* ─── Hero Section ─── */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
    padding: 120px 24px 80px;
}

.hero-canvas {
    position: absolute;
    inset: 0;
    z-index: 0;
    width: 100%;
    height: 100%;
}

.hero-spotlight {
    position: absolute;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background: radial-gradient(
        600px circle at var(--mx, 50%) var(--my, 40%),
        rgba(99, 102, 241, 0.1),
        transparent 60%
    );
    transition: background 0.3s ease;
}

[data-theme="dark"] .hero-spotlight {
    background: radial-gradient(
        600px circle at var(--mx, 50%) var(--my, 40%),
        rgba(129, 140, 248, 0.08),
        transparent 60%
    );
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 720px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: var(--accent-light);
    border: 1px solid var(--accent-border);
    border-radius: 100px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--accent);
    margin-bottom: 28px;
    animation: fadeInDown 0.6s ease-out;
}

.badge-dot {
    width: 6px;
    height: 6px;
    background: var(--accent);
    border-radius: 50%;
    animation: pulse 2.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.4; transform: scale(0.8); }
}

.hero-title {
    font-size: clamp(2.5rem, 5.5vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 20px;
    letter-spacing: -0.03em;
    animation: fadeInUp 0.6s ease-out 0.1s both;
}

.gradient-text {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(1rem, 1.8vw, 1.125rem);
    color: var(--text-secondary);
    max-width: 560px;
    margin: 0 auto 36px;
    line-height: 1.8;
    animation: fadeInUp 0.6s ease-out 0.2s both;
}

.hero-subtitle strong {
    color: var(--text-primary);
}

.hero-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 56px;
    animation: fadeInUp 0.6s ease-out 0.3s both;
}

/* ─── Buttons ─── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 10px;
    font-size: 0.9375rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all 0.2s ease;
    font-family: var(--font-main);
}

.btn-primary {
    background: var(--accent);
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--bg-tertiary);
    border-color: var(--border-hover);
    transform: translateY(-1px);
}

.btn-large {
    padding: 14px 36px;
    font-size: 1rem;
}

/* ─── Hero Stats ─── */
.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    animation: fadeInUp 0.6s ease-out 0.5s both;
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: 2rem;
    font-weight: 800;
    color: var(--accent);
}

.stat-suffix {
    font-size: 2rem;
    font-weight: 800;
    color: var(--accent);
}

.stat-label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-top: 4px;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border);
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
}

.scroll-arrow {
    width: 22px;
    height: 36px;
    border: 2px solid var(--border-hover);
    border-radius: 11px;
    position: relative;
}

.scroll-arrow::after {
    content: '';
    position: absolute;
    top: 7px;
    left: 50%;
    transform: translateX(-50%);
    width: 3px;
    height: 7px;
    background: var(--accent);
    border-radius: 2px;
    animation: scrollBounce 2s ease-in-out infinite;
}

@keyframes scrollBounce {
    0%, 100% { transform: translateX(-50%) translateY(0); opacity: 1; }
    50% { transform: translateX(-50%) translateY(10px); opacity: 0.2; }
}

/* ─── Sections ─── */
.section {
    padding: 100px 0;
    position: relative;
}

.section-dark {
    background: var(--bg-secondary);
}

.section-accent {
    background: var(--accent-light);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 56px;
}

.section-tag {
    display: inline-block;
    padding: 5px 14px;
    background: var(--accent-light);
    border: 1px solid var(--accent-border);
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(1.75rem, 3.5vw, 2.5rem);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.section-desc {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

.text-danger {
    color: var(--danger);
}

/* ─── Problem Cards ─── */
.problem-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 64px;
}

.problem-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: all 0.25s ease;
    position: relative;
}

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

.problem-icon {
    font-size: 2rem;
    margin-bottom: 16px;
}

.problem-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.problem-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
}

.problem-impact {
    padding-top: 14px;
    border-top: 1px solid var(--border);
    font-size: 0.825rem;
}

.impact-label {
    color: var(--text-muted);
    font-weight: 500;
}

.impact-value {
    color: var(--danger);
    font-weight: 600;
}

/* ─── Demo Comparison ─── */
.demo-container {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 40px;
    max-width: 860px;
    margin: 0 auto;
    box-shadow: var(--shadow-md);
}

.demo-title {
    text-align: center;
    font-size: 1.35rem;
    margin-bottom: 32px;
    font-weight: 700;
}

.demo-comparison {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 20px;
    align-items: stretch;
}

.demo-panel {
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border);
}

.demo-panel-header {
    padding: 10px 16px;
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-tertiary);
    font-size: 0.825rem;
    font-weight: 600;
}

.demo-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.demo-dot.red {
    background: var(--danger);
}

.demo-dot.green {
    background: var(--success);
}

.demo-content {
    padding: 16px;
}

.demo-query {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--accent);
    margin-bottom: 14px;
    padding: 8px 12px;
    background: var(--accent-light);
    border-radius: var(--radius-sm);
    border: 1px solid var(--accent-border);
}

.demo-fact {
    font-size: 0.825rem;
    padding: 6px 0;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
}

.demo-date {
    font-size: 0.7rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

.demo-badge-old {
    font-size: 0.625rem;
    padding: 2px 8px;
    background: var(--danger-bg);
    color: var(--danger);
    border-radius: 100px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.demo-badge-new {
    font-size: 0.625rem;
    padding: 2px 8px;
    background: var(--success-bg);
    color: var(--success);
    border-radius: 100px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.demo-fact.superseded {
    color: var(--text-muted);
    text-decoration: line-through;
    text-decoration-color: var(--danger);
}

.demo-fact.current {
    color: var(--success);
    font-weight: 500;
}

.demo-verdict {
    margin-top: 10px;
    padding-top: 10px;
    border-top: 1px solid var(--border);
    font-size: 0.85rem;
    font-weight: 600;
}

.demo-result.bad .demo-verdict {
    color: var(--danger);
}

.demo-result.good .demo-verdict {
    color: var(--success);
}

.demo-vs {
    display: flex;
    align-items: center;
    font-weight: 700;
    font-size: 1rem;
    color: var(--text-muted);
}

/* ─── Solution Flow ─── */
.solution-flow {
    max-width: 640px;
    margin: 0 auto;
}

.flow-step {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 28px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    transition: all 0.25s ease;
}

.flow-step:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-md);
    transform: translateX(4px);
}

.flow-number {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--accent);
    min-width: 44px;
    line-height: 1;
}

.flow-content h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.flow-content p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.flow-icon {
    font-size: 1.75rem;
    margin-left: auto;
    min-width: 36px;
    text-align: center;
}

.flow-connector {
    width: 2px;
    height: 28px;
    background: var(--border);
    margin-left: 48px;
}

/* ─── Use Case Cards ─── */
.usecase-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.usecase-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: all 0.25s ease;
}

.usecase-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.usecase-icon {
    font-size: 2rem;
    margin-bottom: 16px;
}

.usecase-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.usecase-card p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
}

.usecase-tag {
    display: inline-block;
    padding: 3px 10px;
    background: var(--accent-light);
    border: 1px solid var(--accent-border);
    border-radius: 100px;
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

/* ─── Comparison Table ─── */
.comparison-table-wrapper {
    max-width: 680px;
    margin: 0 auto 40px;
    overflow-x: auto;
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.comparison-table thead {
    border-bottom: 2px solid var(--border);
}

.comparison-table th {
    padding: 14px 20px;
    text-align: left;
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.comparison-table td {
    padding: 12px 20px;
    border-bottom: 1px solid var(--border);
    color: var(--text-secondary);
}

.comparison-table tr:last-child td {
    border-bottom: none;
}

.comparison-table .highlight-col {
    background: var(--accent-light);
    color: var(--text-primary);
    font-weight: 500;
}

.comparison-table th.highlight-col {
    color: var(--accent);
}

.check {
    color: var(--success);
    font-size: 1rem;
    font-weight: 700;
}

.cross {
    color: var(--danger);
    font-size: 1rem;
    font-weight: 700;
}

/* Quote */
.quote-block {
    max-width: 640px;
    margin: 0 auto;
    text-align: center;
}

.quote-block blockquote {
    font-size: 1.1rem;
    color: var(--text-secondary);
    font-style: italic;
    line-height: 1.8;
    position: relative;
    padding: 0 32px;
}

.quote-block blockquote::before {
    content: '"';
    position: absolute;
    left: 0;
    top: -8px;
    font-size: 3.5rem;
    font-style: normal;
    color: var(--accent);
    line-height: 1;
    opacity: 0.4;
}

/* ─── Numbers Grid ─── */
.numbers-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    text-align: center;
}

.number-card {
    padding: 28px 16px;
}

.number-value {
    font-size: 2.75rem;
    font-weight: 900;
    color: var(--accent);
    line-height: 1;
    margin-bottom: 6px;
}

.number-label {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.number-desc {
    font-size: 0.825rem;
    color: var(--text-muted);
    line-height: 1.5;
}

/* ─── CTA / Early Access ─── */
.cta-block {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 72px 40px;
    text-align: center;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.cta-glow {
    position: absolute;
    top: -100px;
    left: 50%;
    transform: translateX(-50%);
    width: 500px;
    height: 250px;
    background: radial-gradient(ellipse, var(--accent-light), transparent);
    pointer-events: none;
}

.waitlist-form {
    max-width: 480px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.form-row {
    display: flex;
    gap: 10px;
}

.form-input {
    flex: 1;
    padding: 14px 20px;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 0.9375rem;
    font-family: var(--font-main);
    outline: none;
    transition: all 0.2s ease;
}

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

.form-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-light);
}

.form-note {
    font-size: 0.775rem;
    color: var(--text-muted);
    margin-top: 10px;
}

.form-success {
    margin-top: 16px;
    padding: 14px;
    background: var(--success-bg);
    border: 1px solid var(--success-border);
    border-radius: var(--radius-md);
    color: var(--success);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
    justify-content: center;
    font-size: 0.9rem;
}

.hidden {
    display: none !important;
}

.form-error {
    margin-top: 16px;
    padding: 14px;
    background: var(--danger-bg);
    border: 1px solid var(--danger-border);
    border-radius: var(--radius-md);
    color: var(--danger);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
    justify-content: center;
    font-size: 0.9rem;
}

.form-error a {
    color: var(--accent);
    text-decoration: underline;
}

.spinner {
    width: 18px;
    height: 18px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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

/* ─── Footer ─── */
.footer {
    padding: 0;
    border-top: 1px solid var(--border);
    overflow: hidden;
    background: linear-gradient(180deg, var(--accent-light) 0%, var(--bg-primary) 100%);
}

[data-theme="dark"] .footer {
    background: linear-gradient(180deg, rgba(99, 102, 241, 0.06) 0%, var(--bg-primary) 100%);
}

.footer-giant {
    position: relative;
    padding: 64px 0 24px;
    text-align: center;
    overflow: hidden;
}

.footer-giant-text {
    display: block;
    font-size: clamp(5rem, 18vw, 16rem);
    font-weight: 900;
    letter-spacing: -0.04em;
    line-height: 0.85;
    background: linear-gradient(135deg, #111827 0%, #6366f1 50%, #8b5cf6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    user-select: none;
    white-space: nowrap;
    position: relative;
    z-index: 1;
}

[data-theme="dark"] .footer-giant-text {
    background: linear-gradient(135deg, #fafafa 0%, #818cf8 50%, #a78bfa 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-grid {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: 40px 0 32px;
    gap: 24px;
}

.footer-brand-col {
    flex: 1;
}

.footer-tagline {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 400;
    line-height: 1.6;
    max-width: 240px;
}

.footer-nav {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
    justify-content: center;
    flex: 2;
}

.footer-nav a {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color 0.2s ease;
}

.footer-nav a:hover {
    color: var(--accent);
}

.footer-contact-col {
    flex: 1;
    text-align: right;
}

.footer-contact-col a {
    font-size: 0.85rem;
    color: var(--text-muted);
    transition: color 0.2s ease;
}

.footer-contact-col a:hover {
    color: var(--accent);
}

.footer-bottom {
    padding: 20px 0;
    border-top: 1px solid var(--border);
    font-size: 0.75rem;
    color: var(--text-muted);
    text-align: center;
}

/* ─── Analogy Banner ─── */
.analogy-grid {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 28px;
    max-width: 760px;
    margin: 0 auto;
}

.analogy-card {
    flex: 1;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 28px;
    text-align: center;
    transition: all 0.25s ease;
}

.analogy-card.analogy-highlight {
    border-color: var(--accent);
    background: var(--accent-light);
}

.analogy-emoji {
    font-size: 2.5rem;
    margin-bottom: 14px;
}

.analogy-content h3 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.analogy-content p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.analogy-arrow {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent);
    flex-shrink: 0;
}

/* ─── Market Opportunity ─── */
.market-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 20px;
}

.market-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 28px;
    text-align: center;
    transition: all 0.25s ease;
}

.market-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.market-label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 10px;
}

.market-value {
    font-size: 2.25rem;
    font-weight: 900;
    color: var(--accent);
    line-height: 1.2;
    margin-bottom: 6px;
}

.market-growth {
    font-size: 0.85rem;
    color: var(--success);
    font-weight: 500;
}

.market-bottom {
    text-align: center;
}

.market-note {
    font-size: 0.725rem;
    color: var(--text-muted);
    font-style: italic;
}

/* ─── POC Proof Section ─── */
.poc-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.poc-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px 20px;
    text-align: center;
    transition: all 0.25s ease;
    position: relative;
    overflow: hidden;
}

.poc-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent-gradient);
}

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

.poc-value {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--accent);
    line-height: 1;
    margin-bottom: 6px;
}

.poc-label {
    font-size: 0.9375rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.poc-desc {
    font-size: 0.775rem;
    color: var(--text-muted);
    line-height: 1.5;
}

/* ─── 3D & Interactions ─── */

/* 3D Tilt wrapper — applied by JS */
.tilt-card {
    perspective: 800px;
}

.tilt-card > * {
    transition: transform 0.35s cubic-bezier(0.03, 0.98, 0.52, 0.99);
}

/* Shine / glare overlay on cards */
.problem-card,
.usecase-card,
.market-card,
.poc-card,
.analogy-card,
.flow-step {
    position: relative;
    overflow: hidden;
}

.problem-card::after,
.usecase-card::after,
.market-card::after,
.poc-card::after,
.analogy-card::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        115deg,
        transparent 40%,
        rgba(255, 255, 255, 0.04) 45%,
        rgba(255, 255, 255, 0.08) 50%,
        rgba(255, 255, 255, 0.04) 55%,
        transparent 60%
    );
    transform: translateX(-100%) rotate(0deg);
    transition: transform 0.6s ease;
    pointer-events: none;
    z-index: 1;
}

.problem-card:hover::after,
.usecase-card:hover::after,
.market-card:hover::after,
.poc-card:hover::after,
.analogy-card:hover::after {
    transform: translateX(100%) rotate(0deg);
}

/* Enhanced card hovers with 3D lift */
.problem-card:hover {
    transform: translateY(-4px) rotateX(2deg);
    box-shadow: var(--shadow-xl);
}

.usecase-card:hover {
    transform: translateY(-5px) rotateX(2deg);
    box-shadow: var(--shadow-xl);
}

.poc-card:hover {
    transform: translateY(-4px) rotateX(2deg);
    box-shadow: var(--shadow-xl);
}

.market-card:hover {
    transform: translateY(-3px) rotateX(2deg);
    box-shadow: var(--shadow-lg);
}

.flow-step:hover {
    transform: translateX(6px) rotateY(-1deg);
    box-shadow: var(--shadow-lg);
}

/* Button 3D press effect */
.btn-primary:active {
    transform: translateY(1px) scale(0.98);
    box-shadow: var(--shadow-sm);
}

.btn-secondary:active {
    transform: translateY(1px) scale(0.98);
}

/* Floating badge animation */
.hero-badge {
    animation: badgeFloat 3s ease-in-out infinite, fadeInDown 0.6s ease-out;
}

@keyframes badgeFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-4px); }
}

/* Demo panel entrance */
.demo-panel {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.demo-panel:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-lg);
}

/* Number value count-up glow pulse */
.number-value,
.poc-value,
.market-value {
    transition: transform 0.3s ease;
}

.number-card:hover .number-value,
.poc-card:hover .poc-value,
.market-card:hover .market-value {
    transform: scale(1.08);
}

/* CTA block subtle pulse border */
.cta-block {
    animation: ctaPulse 4s ease-in-out infinite;
}

@keyframes ctaPulse {
    0%, 100% { border-color: var(--border); }
    50% { border-color: var(--accent-border); }
}

/* Footer giant text entrance */
.footer-giant-text {
    animation: footerReveal 1s cubic-bezier(0.16, 1, 0.3, 1) both;
}

@keyframes footerReveal {
    from {
        opacity: 0;
        transform: translateY(40px) scale(0.9);
        filter: blur(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
        filter: blur(0);
    }
}

/* Nav link hover underline with 3D */
.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    border-radius: 1px;
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-link:hover::after {
    width: 100%;
}

/* ─── Core Animations ─── */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px) scale(0.98); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-16px); }
    to { opacity: 1; transform: translateY(0); }
}

[data-aos] {
    opacity: 0;
    transform: translateY(28px) scale(0.98);
    transition: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-aos].visible {
    opacity: 1;
    transform: translateY(0) scale(1);
}

[data-aos="fade-right"] {
    transform: translateX(-28px) rotateY(3deg);
}

[data-aos="fade-right"].visible {
    transform: translateX(0) rotateY(0);
}

[data-aos="zoom-in"] {
    transform: scale(0.92);
}

[data-aos="zoom-in"].visible {
    transform: scale(1);
}

/* ─── Responsive ─── */

/* Tablet */
@media (max-width: 1024px) {
    .problem-grid,
    .usecase-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .numbers-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

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

    .hero-stats {
        gap: 28px;
    }

    .stat-number,
    .stat-suffix {
        font-size: 1.75rem;
    }
}

/* Mobile */
@media (max-width: 768px) {
    /* Nav */
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background: var(--bg-primary);
        flex-direction: column;
        padding: 88px 28px 28px;
        gap: 20px;
        transition: right 0.3s ease;
        border-left: 1px solid var(--border);
        box-shadow: var(--shadow-xl);
    }

    .nav-links.open {
        right: 0;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    /* Hero */
    .hero {
        padding: 100px 20px 60px;
        min-height: auto;
    }

    .hero-title {
        font-size: clamp(1.75rem, 8vw, 2.5rem);
    }

    .hero-subtitle {
        font-size: 0.95rem;
        margin-bottom: 28px;
    }

    .hero-actions {
        margin-bottom: 40px;
    }

    .hero-actions .btn {
        width: 100%;
        justify-content: center;
    }

    .hero-stats {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 0;
        background: var(--bg-card);
        border: 1px solid var(--border);
        border-radius: var(--radius-lg);
        padding: 20px 12px;
        justify-content: center;
    }

    .stat {
        flex: 1 1 33%;
        min-width: 90px;
        padding: 8px 4px;
    }

    .stat-number,
    .stat-suffix {
        font-size: 1.5rem;
    }

    .stat-label {
        font-size: 0.65rem;
        letter-spacing: 0.04em;
    }

    .stat-divider {
        display: none;
    }

    /* Sections */
    .section {
        padding: 64px 0;
    }

    .section-header {
        margin-bottom: 40px;
    }

    .section-title {
        font-size: clamp(1.5rem, 5vw, 2rem);
    }

    .section-desc {
        font-size: 0.95rem;
    }

    /* Grids */
    .problem-grid,
    .usecase-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .demo-comparison {
        grid-template-columns: 1fr;
    }

    .demo-vs {
        justify-content: center;
        padding: 6px 0;
    }

    .demo-container {
        padding: 20px;
    }

    .demo-title {
        font-size: 1.1rem;
    }

    /* Form */
    .form-row {
        flex-direction: column;
    }

    .btn-large {
        width: 100%;
        justify-content: center;
    }

    .cta-block {
        padding: 40px 20px;
    }

    /* Footer */
    .footer-giant {
        padding: 40px 0 16px;
    }

    .footer-grid {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 20px;
    }

    .footer-tagline {
        max-width: none;
    }

    .footer-nav {
        gap: 14px;
    }

    .footer-contact-col {
        text-align: center;
    }

    /* Cards — compact on mobile */
    .problem-card,
    .usecase-card {
        padding: 24px 20px;
    }

    .problem-icon,
    .usecase-icon {
        font-size: 1.5rem;
        margin-bottom: 12px;
    }

    .problem-card h3,
    .usecase-card h3 {
        font-size: 1rem;
        margin-bottom: 8px;
    }

    .problem-card p,
    .usecase-card p {
        font-size: 0.825rem;
        line-height: 1.6;
        margin-bottom: 12px;
    }

    .problem-impact {
        padding-top: 10px;
        font-size: 0.75rem;
    }

    .usecase-tag {
        font-size: 0.625rem;
        padding: 2px 8px;
    }

    /* Flow steps — compact */
    .flow-step {
        padding: 20px 16px;
        gap: 14px;
    }

    .flow-number {
        font-size: 1.4rem;
        min-width: 36px;
    }

    .flow-content h3 {
        font-size: 0.95rem;
    }

    .flow-content p {
        font-size: 0.825rem;
    }

    .flow-icon {
        font-size: 1.4rem;
        min-width: 28px;
    }

    .flow-connector {
        height: 20px;
        margin-left: 38px;
    }

    /* Analogy — compact */
    .analogy-card {
        padding: 20px 16px;
    }

    .analogy-emoji {
        font-size: 2rem;
        margin-bottom: 10px;
    }

    .analogy-content h3 {
        font-size: 0.9rem;
    }

    .analogy-content p {
        font-size: 0.8rem;
    }

    .analogy-arrow {
        font-size: 1.5rem;
    }

    /* Market cards — compact */
    .market-card {
        padding: 20px 16px;
    }

    .market-label {
        font-size: 0.7rem;
        margin-bottom: 6px;
    }

    .market-value {
        font-size: 1.75rem;
        margin-bottom: 4px;
    }

    .market-growth {
        font-size: 0.75rem;
    }

    /* Number cards — compact */
    .number-card {
        padding: 20px 12px;
    }

    .number-value {
        font-size: 2rem;
    }

    .number-label {
        font-size: 0.85rem;
        margin-bottom: 4px;
    }

    .number-desc {
        font-size: 0.725rem;
    }

    /* POC cards — compact */
    .poc-card {
        padding: 24px 14px;
    }

    .poc-value {
        font-size: 2rem;
    }

    .poc-label {
        font-size: 0.825rem;
    }

    .poc-desc {
        font-size: 0.7rem;
    }

    /* Demo — compact */
    .demo-panel-header {
        padding: 8px 12px;
        font-size: 0.75rem;
    }

    .demo-content {
        padding: 12px;
    }

    .demo-query {
        font-size: 0.725rem;
        padding: 6px 10px;
        margin-bottom: 10px;
    }

    .demo-fact {
        font-size: 0.75rem;
        padding: 4px 0;
    }

    .demo-verdict {
        font-size: 0.775rem;
    }

    /* Comparison table — compact */
    .comparison-table-wrapper {
        margin-bottom: 28px;
    }

    .comparison-table th,
    .comparison-table td {
        padding: 8px 10px;
        font-size: 0.75rem;
    }

    /* Quote — compact */
    .quote-block blockquote {
        font-size: 0.95rem;
        padding: 0 12px;
    }

    /* CTA — compact */
    .cta-block {
        padding: 36px 16px;
        border-radius: var(--radius-lg);
    }

    .cta-block .section-header {
        margin-bottom: 28px;
    }

    .form-input {
        padding: 12px 16px;
        font-size: 0.875rem;
    }

    /* Misc */
    .numbers-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .analogy-grid {
        flex-direction: column;
        gap: 16px;
    }

    .analogy-arrow {
        transform: rotate(90deg);
    }

    .market-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .poc-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    /* Disable 3D tilt on touch devices */
    .problem-card:hover,
    .usecase-card:hover,
    .poc-card:hover,
    .market-card:hover {
        transform: translateY(-2px);
    }

    .flow-step:hover {
        transform: translateX(4px);
    }
}

/* Small mobile */
@media (max-width: 480px) {
    .hero {
        padding: 88px 16px 48px;
    }

    .hero-title {
        font-size: 1.75rem;
        line-height: 1.15;
    }

    .hero-badge {
        font-size: 0.7rem;
        padding: 5px 12px;
    }

    .hero-stats {
        padding: 16px 8px;
    }

    .stat {
        flex: 1 1 33%;
        min-width: 80px;
    }

    .stat-number,
    .stat-suffix {
        font-size: 1.3rem;
    }

    .stat-label {
        font-size: 0.6rem;
    }

    .section {
        padding: 48px 0;
    }

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

    .number-value {
        font-size: 2rem;
    }

    .flow-step {
        flex-wrap: wrap;
        gap: 12px;
        padding: 20px;
    }

    .flow-icon {
        display: none;
    }

    .quote-block blockquote {
        font-size: 0.95rem;
        padding: 0 16px;
    }

    .poc-grid {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }

    .poc-card {
        padding: 20px 12px;
    }

    .poc-value {
        font-size: 1.8rem;
    }

    .footer-giant {
        padding: 32px 0 12px;
    }
}

/* Very small screens */
@media (max-width: 360px) {
    .hero-title {
        font-size: 1.5rem;
    }

    .hero-subtitle {
        font-size: 0.875rem;
    }

    .stat-number,
    .stat-suffix {
        font-size: 1.1rem;
    }

    .stat-label {
        font-size: 0.55rem;
    }

    .btn {
        padding: 10px 20px;
        font-size: 0.875rem;
    }
}