/**
 * GitSwitch Website Styles
 * GitHub-inspired dark theme
 */

:root {
    /* Colors - GitHub Dark */
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #21262d;
    --bg-overlay: rgba(13, 17, 23, 0.8);

    --text-primary: #f0f6fc;
    --text-secondary: #8b949e;
    --text-muted: #6e7681;

    --border-primary: #30363d;
    --border-secondary: #21262d;

    --accent-blue: #58a6ff;
    --accent-green: #238636;
    --accent-green-bright: #3fb950;
    --accent-purple: #a371f7;
    --accent-orange: #d29922;
    --accent-red: #f85149;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #238636 0%, #58a6ff 100%);
    --gradient-hero: linear-gradient(180deg, #0d1117 0%, #161b22 100%);

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

    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    --space-3xl: 64px;
    --space-4xl: 96px;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px rgba(88, 166, 255, 0.15);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    color: var(--accent-blue);
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: var(--text-primary);
}

code {
    font-family: var(--font-mono);
    background: var(--bg-tertiary);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-size: 0.9em;
}

pre {
    background: var(--bg-tertiary);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    overflow-x: auto;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    border: 1px solid var(--border-primary);
}

pre code {
    background: none;
    padding: 0;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: 0.95rem;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

.btn-primary {
    background: var(--accent-green);
    color: white;
    border-color: var(--accent-green);
}

.btn-primary:hover {
    background: #2ea043;
    color: white;
    box-shadow: var(--shadow-glow);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border-color: var(--border-primary);
}

.btn-secondary:hover {
    background: var(--bg-secondary);
    border-color: var(--text-muted);
    color: var(--text-primary);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border: none;
}

.btn-ghost:hover {
    color: var(--text-primary);
}

.btn-lg {
    padding: var(--space-md) var(--space-xl);
    font-size: 1.1rem;
}

/* Badge */
.badge {
    display: inline-block;
    padding: 2px 8px;
    background: var(--accent-green);
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    margin-left: var(--space-sm);
}

/* Navigation */
.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-lg) var(--space-xl);
    max-width: 1400px;
    margin: 0 auto;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
}

.nav-logo {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
}

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

.nav-links a {
    color: var(--text-secondary);
    font-weight: 500;
}

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

/* Hero Section */
.hero {
    background: var(--gradient-hero);
    padding-bottom: var(--space-4xl);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse at 50% 0%, rgba(88, 166, 255, 0.1) 0%, transparent 60%);
    pointer-events: none;
}

.hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    padding: var(--space-3xl) var(--space-lg);
    position: relative;
}

.hero-badge {
    display: inline-block;
    padding: var(--space-xs) var(--space-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-full);
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--space-lg);
}

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

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-xl);
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
    margin-bottom: var(--space-2xl);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--space-3xl);
}

.stat {
    text-align: center;
}

.stat-value {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-blue);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.hero-image {
    max-width: 1000px;
    margin: var(--space-2xl) auto 0;
    padding: 0 var(--space-lg);
}

.screenshot {
    width: 100%;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-primary);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

/* Sections */
.section {
    padding: var(--space-4xl) 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--space-md);
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: var(--space-3xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Problem Section */
.problem-section {
    background: var(--bg-secondary);
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
}

.problem-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    text-align: center;
}

.problem-icon {
    font-size: 2.5rem;
    display: block;
    margin-bottom: var(--space-md);
}

.problem-card h3 {
    margin-bottom: var(--space-sm);
    font-size: 1.2rem;
}

.problem-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Solution Section */
.solution-demo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-lg);
    flex-wrap: wrap;
}

.demo-step {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    min-width: 280px;
}

.step-number {
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 700;
    flex-shrink: 0;
}

.step-content h4 {
    font-size: 1rem;
    margin-bottom: var(--space-xs);
}

.step-content p {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.demo-arrow {
    font-size: 1.5rem;
    color: var(--text-muted);
}

/* Features Section */
.features-section {
    background: var(--bg-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-lg);
}

.feature-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    transition: all 0.3s;
}

.feature-card:hover {
    border-color: var(--accent-blue);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.feature-icon {
    font-size: 2rem;
    margin-bottom: var(--space-md);
}

.feature-card h3 {
    font-size: 1.1rem;
    margin-bottom: var(--space-sm);
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* How It Works Section */
.how-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-lg);
}

.how-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
}

.how-card h4 {
    margin-bottom: var(--space-md);
    font-size: 1.1rem;
    color: var(--accent-blue);
}

.how-card p {
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
}

.how-card ol {
    padding-left: var(--space-lg);
    color: var(--text-secondary);
}

.how-card li {
    margin-bottom: var(--space-sm);
}

/* Download Section */
.download-section {
    background: var(--bg-secondary);
}

.download-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
}

.download-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    text-align: center;
    transition: all 0.3s;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    text-decoration: none;
    color: var(--text-primary);
}

.download-card:hover {
    border-color: var(--accent-green);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    color: var(--text-primary);
}

.download-card.download-coming {
    opacity: 0.6;
    cursor: not-allowed;
}

.download-card.download-coming:hover {
    transform: none;
    border-color: var(--border-primary);
}

.download-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
}

.download-card h3 {
    font-size: 1.3rem;
}

.download-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.download-size {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: var(--space-sm);
}

.download-card .btn {
    margin-top: auto;
    width: 100%;
    justify-content: center;
}

/* CTA Section */
.cta-section {
    background: var(--gradient-primary);
    text-align: center;
    padding: var(--space-3xl) 0;
}

.cta-section h2 {
    font-size: 2rem;
    margin-bottom: var(--space-md);
}

.cta-section p {
    font-size: 1.1rem;
    opacity: 0.9;
    margin-bottom: var(--space-xl);
}

.cta-section .btn {
    background: white;
    color: var(--accent-green);
}

.cta-section .btn:hover {
    background: var(--text-primary);
}

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

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

.footer-brand {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-weight: 600;
}

.footer-logo {
    width: 28px;
    height: 28px;
    border-radius: var(--radius-sm);
}

.footer-links {
    display: flex;
    gap: var(--space-xl);
}

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

.footer-bottom {
    text-align: center;
    padding-top: var(--space-xl);
    border-top: 1px solid var(--border-primary);
}

.footer-bottom p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.footer-copyright {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-top: var(--space-sm);
}

/* Responsive */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.2rem;
    }

    .hero-actions {
        flex-direction: column;
        align-items: center;
    }

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

    .nav-links {
        display: none;
    }

    .solution-demo {
        flex-direction: column;
    }

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

    .footer-content {
        flex-direction: column;
        gap: var(--space-lg);
        text-align: center;
    }

    .section-title {
        font-size: 1.8rem;
    }
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-content {
    animation: fadeIn 0.8s ease-out;
}

.feature-card,
.download-card,
.problem-card {
    animation: fadeIn 0.6s ease-out;
}