/* ============================================
   INFERRED - Sovereign Cognitive Infrastructure
   Dark Theme Landing Page Styles
   ============================================ */

/* --- CSS Custom Properties (Design Tokens) --- */
:root {
    /* Primary palette - deep dark */
    --color-bg-primary: #0a0a0f;
    --color-bg-secondary: #0d0d14;
    --color-bg-tertiary: #12121c;
    --color-bg-card: #141420;
    --color-bg-elevated: #1a1a2e;

    /* Accent colors - electric blue/cyan for tech feel */
    --color-accent-primary: #3b82f6;
    --color-accent-secondary: #06b6d4;
    --color-accent-tertiary: #8b5cf6;
    --color-accent-glow: rgba(59, 130, 246, 0.15);

    /* Gradient definitions */
    --gradient-primary: linear-gradient(135deg, #3b82f6 0%, #06b6d4 50%, #8b5cf6 100%);
    --gradient-subtle: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(6, 182, 212, 0.1) 100%);
    --gradient-card: linear-gradient(180deg, rgba(59, 130, 246, 0.05) 0%, transparent 100%);

    /* Text colors */
    --color-text-primary: #f1f5f9;
    --color-text-secondary: #94a3b8;
    --color-text-muted: #64748b;
    --color-text-inverse: #0a0a0f;

    /* Borders & dividers */
    --color-border: rgba(148, 163, 184, 0.1);
    --color-border-hover: rgba(59, 130, 246, 0.3);

    /* Spacing scale */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;
    --space-5xl: 8rem;

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

    /* Font sizes */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    --text-6xl: 3.75rem;

    /* Border radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 40px rgba(59, 130, 246, 0.15);

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);

    /* Container */
    --container-max: 1280px;
    --container-narrow: 960px;
}

/* --- 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);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

ul {
    list-style: none;
}

/* --- Utility Classes --- */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-xl);
}

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

/* --- Navigation --- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--space-lg) 0;
    transition: all var(--transition-base);
    background: transparent;
}

.navbar.scrolled {
    padding: var(--space-sm) 0;
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
}

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

.nav-logo .logo-img {
    height: 36px;
    width: auto;
    transition: opacity var(--transition-fast);
}

.nav-logo:hover .logo-img {
    opacity: 0.8;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
}

.nav-link {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width var(--transition-base);
}

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

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

.nav-cta {
    font-size: var(--text-sm);
    font-weight: 600;
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-md);
    background: var(--gradient-primary);
    color: var(--color-text-inverse);
    transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.nav-cta:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

/* Mobile Toggle */
.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-sm);
}

.mobile-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text-primary);
    transition: all var(--transition-fast);
    border-radius: 2px;
}

/* --- Hero Section --- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: var(--space-5xl) var(--space-xl);
    overflow: hidden;
}

.hero-bg-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(59, 130, 246, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(59, 130, 246, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

.hero-glow {
    position: absolute;
    top: 10%;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 600px;
    background: radial-gradient(ellipse, rgba(59, 130, 246, 0.08) 0%, transparent 60%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 900px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-full);
    border: 1px solid var(--color-border);
    background: var(--color-bg-tertiary);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-2xl);
}

.badge-dot {
    width: 8px;
    height: 8px;
    border-radius: var(--radius-full);
    background: #10b981;
    animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.hero-title {
    font-size: clamp(var(--text-4xl), 6vw, var(--text-6xl));
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: var(--space-xl);
    color: var(--color-text-primary);
}

.hero-subtitle {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    max-width: 640px;
    margin: 0 auto var(--space-2xl);
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-lg);
    margin-bottom: var(--space-4xl);
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-md) var(--space-2xl);
    border-radius: var(--radius-lg);
    font-size: var(--text-sm);
    font-weight: 600;
    transition: all var(--transition-fast);
    cursor: pointer;
    border: none;
    font-family: inherit;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--color-text-inverse);
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.4);
}

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

.btn-secondary:hover {
    border-color: var(--color-border-hover);
    background: var(--color-bg-card);
    transform: translateY(-2px);
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2xl);
    padding-top: var(--space-2xl);
    border-top: 1px solid var(--color-border);
}

.stat {
    text-align: center;
}

.stat-value {
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--color-text-primary);
    font-family: var(--font-mono);
}

.stat-label {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: var(--space-xs);
}

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

.scroll-indicator {
    position: absolute;
    bottom: var(--space-2xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    color: var(--color-text-muted);
    font-size: var(--text-xs);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.scroll-arrow {
    width: 20px;
    height: 20px;
    border-right: 2px solid var(--color-text-muted);
    border-bottom: 2px solid var(--color-text-muted);
    transform: rotate(45deg);
    animation: scroll-bounce 2s ease-in-out infinite;
}

@keyframes scroll-bounce {
    0%, 100% { transform: rotate(45deg) translateY(0); }
    50% { transform: rotate(45deg) translateY(6px); }
}

/* --- Section Shared --- */
.section-label {
    display: inline-block;
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-accent-primary);
    margin-bottom: var(--space-md);
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-sm);
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.15);
}

.section-title {
    font-size: clamp(var(--text-3xl), 4vw, var(--text-5xl));
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-xl);
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-4xl);
}

.section-subtitle {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.7;
}

/* --- Advantage Section --- */
.advantage {
    padding: var(--space-5xl) 0;
    position: relative;
}

.blueprint-quote {
    font-size: var(--text-lg);
    line-height: 1.8;
    color: var(--color-text-secondary);
    text-align: center;
    max-width: var(--container-narrow);
    margin: 0 auto var(--space-4xl);
    padding: var(--space-2xl);
    border-left: 3px solid var(--color-accent-primary);
    background: var(--gradient-subtle);
    border-radius: var(--radius-lg);
    border-left: 3px solid;
    border-image: var(--gradient-primary) 1;
    border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
}

.advantage-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
    max-width: var(--container-max);
    margin: 0 auto;
}

.advantage-card {
    padding: var(--space-2xl);
    border-radius: var(--radius-xl);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.advantage-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.advantage-card:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.advantage-card:hover::before {
    opacity: 1;
}

.card-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    background: rgba(59, 130, 246, 0.1);
    color: var(--color-accent-primary);
    margin-bottom: var(--space-lg);
}

.advantage-card h3 {
    font-size: var(--text-xl);
    font-weight: 700;
    margin-bottom: var(--space-sm);
    color: var(--color-text-primary);
}

.advantage-card p {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* --- Services Section --- */
.services {
    padding: var(--space-5xl) 0;
    background: var(--color-bg-secondary);
    position: relative;
}

.services::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-border), transparent);
}

.service-block {
    display: grid;
    grid-template-columns: 80px 1fr;
    gap: var(--space-2xl);
    padding: var(--space-3xl) 0;
    border-bottom: 1px solid var(--color-border);
    max-width: var(--container-max);
    margin: 0 auto;
}

.service-block:last-child {
    border-bottom: none;
}

.service-number {
    font-size: var(--text-5xl);
    font-weight: 900;
    font-family: var(--font-mono);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    opacity: 0.4;
    line-height: 1;
    align-self: start;
    padding-top: var(--space-xs);
}

.service-content h3 {
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--space-md);
}

.service-desc {
    font-size: var(--text-base);
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-xl);
    max-width: 800px;
}

.service-features {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.feature {
    display: flex;
    gap: var(--space-md);
    align-items: flex-start;
}

.feature-icon {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    background: rgba(59, 130, 246, 0.08);
    color: var(--color-accent-primary);
    margin-top: 2px;
}

.feature strong {
    display: block;
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 2px;
}

.feature span {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    line-height: 1.6;
}

/* --- Sectors Section --- */
.sectors {
    padding: var(--space-5xl) 0;
    position: relative;
}

.sector-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
    max-width: var(--container-max);
    margin: 0 auto;
}

.sector-card {
    padding: var(--space-2xl);
    border-radius: var(--radius-xl);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
    text-align: center;
}

.sector-card:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.sector-icon {
    width: 72px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-lg);
    border-radius: var(--radius-xl);
    background: rgba(59, 130, 246, 0.08);
    color: var(--color-accent-primary);
}

.sector-card h3 {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--space-sm);
}

.sector-card p {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* --- Contact Section --- */
.contact {
    padding: var(--space-5xl) 0;
    background: var(--color-bg-secondary);
    position: relative;
}

.contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-border), transparent);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4xl);
    align-items: start;
    max-width: var(--container-max);
    margin: 0 auto;
}

.contact-info .section-title {
    margin-bottom: var(--space-md);
}

.contact-desc {
    font-size: var(--text-base);
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-2xl);
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    border-radius: var(--radius-lg);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    transition: all var(--transition-fast);
}

.contact-item:hover {
    border-color: var(--color-border-hover);
    background: var(--color-bg-elevated);
}

.contact-icon {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    background: rgba(59, 130, 246, 0.1);
    color: var(--color-accent-primary);
}

.contact-label {
    display: block;
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 2px;
}

.contact-value {
    display: block;
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-primary);
}

.contact-value:hover {
    color: var(--color-accent-primary);
}

/* Code Block Visual */
.contact-visual {
    position: relative;
}

.code-block {
    background: #0d1117;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.code-header {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-lg);
    background: rgba(255, 255, 255, 0.02);
    border-bottom: 1px solid var(--color-border);
}

.code-dot {
    width: 12px;
    height: 12px;
    border-radius: var(--radius-full);
}

.code-dot.red { background: #ff5f57; }
.code-dot.yellow { background: #febc2e; }
.code-dot.green { background: #28c840; }

.code-filename {
    margin-left: var(--space-md);
    font-size: var(--text-xs);
    font-family: var(--font-mono);
    color: var(--color-text-muted);
}

.code-block pre {
    padding: var(--space-lg) var(--space-xl) var(--space-xl);
    overflow-x: auto;
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    line-height: 1.7;
    color: var(--color-text-secondary);
}

.code-key { color: #7ee787; }
.code-val { color: #a5d6ff; }
.code-comment { color: #484f58; font-style: italic; }

/* --- Footer --- */
.footer {
    padding: var(--space-4xl) 0 var(--space-2xl);
    border-top: 1px solid var(--color-border);
    background: var(--color-bg-primary);
}

.footer-content {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-xl);
    text-align: center;
}

.footer-logo {
    height: 32px;
    width: auto;
    margin: 0 auto var(--space-md);
    opacity: 0.8;
}

.footer-brand p {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    margin-bottom: var(--space-2xl);
}

.footer-links {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2xl);
    margin-bottom: var(--space-lg);
}

.footer-links a {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

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

.footer-legal {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

.footer-legal a {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

.footer-legal a:hover {
    color: var(--color-text-secondary);
}

.footer-bottom p {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
}

/* --- Responsive Design --- */
@media (max-width: 1024px) {
    .advantage-grid,
    .sector-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .service-block {
        grid-template-columns: 60px 1fr;
        gap: var(--space-xl);
    }

    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: var(--space-3xl);
    }
}

@media (max-width: 768px) {
    :root {
        --space-5xl: 5rem;
        --space-4xl: 4rem;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        flex-direction: column;
        background: var(--color-bg-secondary);
        border-left: 1px solid var(--color-border);
        padding: var(--space-4xl) var(--space-xl);
        gap: var(--space-lg);
        transition: right var(--transition-base);
        z-index: 999;
    }

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

    .mobile-toggle {
        display: flex;
        z-index: 1001;
    }

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

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

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

    .hero-title {
        font-size: var(--text-3xl);
    }

    .hero-stats {
        flex-direction: column;
        gap: var(--space-lg);
    }

    .stat-divider {
        width: 40px;
        height: 1px;
    }

    .advantage-grid,
    .sector-grid {
        grid-template-columns: 1fr;
    }

    .service-block {
        grid-template-columns: 1fr;
        gap: var(--space-sm);
    }

    .service-number {
        font-size: var(--text-3xl);
    }

    .hero-actions {
        flex-direction: column;
        width: 100%;
    }

    .btn {
        width: 100%;
    }

    .footer-links {
        flex-wrap: wrap;
        gap: var(--space-lg);
    }

    .footer-legal {
        flex-wrap: wrap;
        gap: var(--space-lg);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-md);
    }

    .hero {
        padding: var(--space-4xl) var(--space-md);
    }

    .section-title {
        font-size: var(--text-2xl);
    }

    .blueprint-quote {
        font-size: var(--text-base);
        padding: var(--space-lg);
    }
}

/* --- Animations on scroll (subtle fade-in) --- */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-content > * {
    animation: fadeInUp 0.6s ease-out backwards;
}

.badge-dot {
    animation-delay: 0.1s;
}

.hero-title {
    animation-delay: 0.2s;
}

.hero-subtitle {
    animation-delay: 0.3s;
}

.hero-actions {
    animation-delay: 0.4s;
}

.hero-stats {
    animation-delay: 0.5s;
}

/* --- How It Works Section --- */
.how-it-works {
    padding: var(--space-5xl) 0;
    background: var(--color-bg-secondary);
    position: relative;
}

.how-it-works::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-border), transparent);
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
    max-width: var(--container-max);
    margin: 0 auto;
}

.step-card {
    padding: var(--space-2xl);
    border-radius: var(--radius-xl);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
    text-align: center;
    position: relative;
}

.step-card:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.step-number {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-lg);
    border-radius: var(--radius-full);
    background: rgba(59, 130, 246, 0.1);
    color: var(--color-accent-primary);
    font-size: var(--text-2xl);
    font-weight: 800;
    font-family: var(--font-mono);
}

.step-card h3 {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--space-md);
}

.step-card p {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* --- Technical Section --- */
.technical {
    padding: var(--space-5xl) 0;
    position: relative;
}

.tech-intro {
    max-width: var(--container-narrow);
    margin: 0 auto var(--space-4xl);
    text-align: center;
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    line-height: 1.8;
}

.tech-specs {
    max-width: var(--container-max);
    margin: var(--space-4xl) auto 0;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
}

.tech-specs h3 {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--space-xl);
    text-align: center;
}

.specs-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.spec-item {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    padding: var(--space-md);
    border-radius: var(--radius-lg);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
}

.spec-label {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
}

.spec-value {
    font-size: var(--text-sm);
    color: var(--color-text-primary);
    font-weight: 500;
    font-family: var(--font-mono);
}

/* --- Responsive Design --- */
@media (max-width: 1024px) {
    .steps-grid,
    .specs-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .steps-grid,
    .specs-grid {
        grid-template-columns: 1fr;
    }
}