/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colors - Light Mode */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #f1f3f5;
    --text-primary: #1a1a1a;
    --text-secondary: #6b7280;
    --text-tertiary: #9ca3af;
    --border-color: #e5e7eb;
    --accent-primary: #6366f1;
    --accent-hover: #4f46e5;
    --success: #10b981;
    --danger: #ef4444;
    --code-bg: #f3f4f6;

    /* Spacing */
    --container-width: 1200px;
    --section-padding: 120px;
    --card-padding: 32px;

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

/* Dark Mode */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-primary: #0a0a0a;
        --bg-secondary: #111111;
        --bg-tertiary: #1a1a1a;
        --text-primary: #ffffff;
        --text-secondary: #a0a0a0;
        --text-tertiary: #707070;
        --border-color: #2a2a2a;
        --code-bg: #1a1a1a;
    }
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    padding: 16px 0;
}

@media (prefers-color-scheme: dark) {
    .nav {
        background: rgba(10, 10, 10, 0.8);
    }
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 600;
    font-size: 18px;
}

.logo-icon {
    font-size: 24px;
}

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

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    transition: color 0.2s;
}

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

.github-link {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--bg-tertiary);
    border-radius: 8px;
    transition: all 0.2s;
}

.github-link:hover {
    background: var(--accent-primary);
    color: white !important;
}

/* Hero Section */
.hero {
    padding-top: 160px;
    padding-bottom: var(--section-padding);
    text-align: center;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 100px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--success);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.hero-title {
    font-size: 64px;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.gradient-text {
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 20px;
    color: var(--text-secondary);
    margin-bottom: 48px;
    line-height: 1.8;
}

.hero-description code {
    background: var(--code-bg);
    padding: 4px 8px;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 16px;
    color: var(--accent-primary);
}

/* Install Box */
.install-box {
    position: relative;
    max-width: 600px;
    margin: 0 auto 48px;
}

.install-command {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px 60px 20px 24px;
    font-family: var(--font-mono);
    font-size: 14px;
    color: var(--text-primary);
    text-align: left;
    word-break: break-all;
}

.copy-btn {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: var(--accent-primary);
    color: white;
    border: none;
    border-radius: 8px;
    padding: 10px 12px;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.copy-btn:hover {
    background: var(--accent-hover);
    transform: translateY(-50%) scale(1.05);
}

.copy-btn:active {
    transform: translateY(-50%) scale(0.95);
}

/* Stats */
.stats {
    display: flex;
    justify-content: center;
    gap: 48px;
    margin-top: 48px;
}

.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.stat-value {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-label {
    font-size: 14px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Features Section */
.features {
    padding: var(--section-padding) 0;
    background: var(--bg-secondary);
}

.section-title {
    font-size: 48px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.section-subtitle {
    font-size: 20px;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 64px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 24px;
}

.feature-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: var(--card-padding);
    transition: all 0.3s;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.feature-title {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 12px;
}

.feature-description {
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.7;
}

.feature-example {
    background: var(--code-bg);
    border-radius: 8px;
    padding: 12px;
    font-family: var(--font-mono);
    font-size: 13px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.feature-example code {
    color: var(--text-primary);
}

.example-result {
    color: var(--text-tertiary);
    font-size: 12px;
}

/* How It Works */
.how-it-works {
    padding: var(--section-padding) 0;
}

.workflow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    margin-bottom: 64px;
    flex-wrap: wrap;
}

.workflow-step {
    flex: 1;
    min-width: 250px;
    max-width: 300px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
}

.step-number {
    width: 40px;
    height: 40px;
    background: var(--accent-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    margin-bottom: 16px;
}

.step-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.step-description {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.6;
}

.workflow-arrow {
    font-size: 32px;
    color: var(--text-tertiary);
}

/* Comparison */
.comparison {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    max-width: 800px;
    margin: 0 auto;
}

.comparison-col {
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: 16px;
    padding: 32px;
}

.comparison-col.local {
    border-color: var(--success);
}

.comparison-col.cloud {
    border-color: var(--danger);
}

.comparison-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.comparison-icon {
    font-size: 32px;
}

.comparison-header h3 {
    font-size: 20px;
    font-weight: 600;
}

.comparison-example {
    background: var(--code-bg);
    border-radius: 8px;
    padding: 16px;
    font-family: var(--font-mono);
    font-size: 13px;
}

.comparison-example code {
    display: block;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.comparison-result {
    display: block;
    font-size: 12px;
    font-weight: 600;
}

.comparison-result.success {
    color: var(--success);
}

.comparison-result.danger {
    color: var(--danger);
}

/* Installation */
.installation {
    padding: var(--section-padding) 0;
    background: var(--bg-secondary);
}

.install-steps {
    max-width: 700px;
    margin: 0 auto 48px;
}

.install-step {
    display: flex;
    gap: 24px;
    margin-bottom: 32px;
}

.install-step-number {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    background: var(--accent-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 20px;
}

.install-step-content h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
}

.install-step-content p {
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.code-block {
    position: relative;
    background: var(--code-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 16px 60px 16px 16px;
    font-family: var(--font-mono);
    font-size: 13px;
}

.copy-btn-small {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    background: var(--accent-primary);
    color: white;
    border: none;
    border-radius: 6px;
    padding: 6px 12px;
    cursor: pointer;
    font-size: 12px;
    transition: all 0.2s;
}

.copy-btn-small:hover {
    background: var(--accent-hover);
}

.requirements {
    max-width: 600px;
    margin: 0 auto;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 32px;
}

.requirements h4 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 16px;
}

.requirements ul {
    list-style: none;
}

.requirements li {
    padding-left: 28px;
    margin-bottom: 8px;
    position: relative;
    color: var(--text-secondary);
}

.requirements li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--success);
    font-weight: 700;
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 64px 0 32px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: 64px;
    margin-bottom: 48px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 600;
    font-size: 18px;
    margin-bottom: 8px;
}

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

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.footer-col h4 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-col a {
    display: block;
    color: var(--text-secondary);
    text-decoration: none;
    margin-bottom: 12px;
    transition: color 0.2s;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 32px;
    border-top: 1px solid var(--border-color);
    color: var(--text-tertiary);
    font-size: 14px;
}

.footer-bottom p {
    margin-bottom: 4px;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-title {
        font-size: 40px;
    }

    .hero-description {
        font-size: 18px;
    }

    .section-title {
        font-size: 36px;
    }

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

    .workflow {
        flex-direction: column;
    }

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

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

    .footer-content {
        grid-template-columns: 1fr;
    }

    .footer-links {
        grid-template-columns: 1fr;
    }

    .nav-links {
        gap: 16px;
        font-size: 14px;
    }

    .stats {
        gap: 24px;
    }
}

/* GitHub Corner */
.github-corner {
    position: fixed;
    top: 0;
    right: 0;
    z-index: 1001;
    border: 0;
    fill: var(--accent-primary);
    color: var(--bg-primary);
    transition: fill 0.2s;
}

.github-corner:hover {
    fill: var(--accent-hover);
}

.github-corner:hover .octo-arm {
    animation: octocat-wave 560ms ease-in-out;
}

@keyframes octocat-wave {
    0%, 100% { transform: rotate(0); }
    20%, 60% { transform: rotate(-25deg); }
    40%, 80% { transform: rotate(10deg); }
}

@media (max-width: 500px) {
    .github-corner:hover .octo-arm {
        animation: none;
    }
    .github-corner .octo-arm {
        animation: octocat-wave 560ms ease-in-out;
    }
}

/* Smooth animations */
@media (prefers-reduced-motion: no-preference) {
    * {
        transition: background-color 0.2s, border-color 0.2s;
    }
}