:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --secondary: #8b5cf6;
    --text-dark: #1e293b;
    --text-light: #64748b;
    --bg-light: #ffffff;
    --bg-gray: #f8fafc;
    --bg-dark: #0f172a;
    --border: #e2e8f0;
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background: var(--bg-light);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    padding: 16px 0;
}

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

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--primary);
    text-decoration: none;
}

.nav-brand svg {
    color: var(--primary);
}

.nav-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dark);
}

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

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

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

/* Hero */
.hero {
    padding: 180px 0 120px;
    background: linear-gradient(135deg, var(--bg-light) 0%, var(--bg-gray) 100%);
    text-align: center;
}

.hero h1 {
    font-size: 4.5rem;
    font-weight: 800;
    margin-bottom: 24px;
    line-height: 1.1;
    color: var(--text-dark);
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-light);
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 16px 32px;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s;
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    box-shadow: var(--shadow);
}

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

.btn-secondary {
    background: white;
    color: var(--text-dark);
    border: 2px solid var(--border);
}

.btn-secondary:hover {
    border-color: var(--primary);
    color: var(--primary);
}

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

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

.section-dark .section-title {
    color: white;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 60px;
    color: var(--text-dark);
}

/* Features */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 40px;
}

.feature-card {
    background: white;
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 40px;
    transition: all 0.2s;
    text-align: center;
}

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

.feature-icon {
    font-size: 3rem;
    margin-bottom: 16px;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 12px;
    color: var(--text-dark);
}

.feature-highlight {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 12px;
}

.feature-card p:not(.feature-highlight) {
    color: var(--text-light);
    margin-bottom: 20px;
}

/* Code blocks */
.code-block {
    display: block;
    background: var(--bg-dark);
    color: #e2e8f0;
    padding: 16px;
    border-radius: 8px;
    font-family: 'Monaco', 'Menlo', 'Consolas', monospace;
    font-size: 0.875rem;
    overflow-x: auto;
    white-space: pre-wrap;
    text-align: left;
}

/* Installation */
.install-card {
    max-width: 600px;
    margin: 0 auto;
    background: white;
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 40px;
    box-shadow: var(--shadow);
}

.install-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
    justify-content: center;
}

.install-header h3 {
    margin: 0;
    font-size: 1.5rem;
    color: var(--text-dark);
}

.badge {
    display: inline-block;
    padding: 4px 12px;
    background: var(--primary);
    color: white;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.install-content {
    text-align: center;
}

.install-content p {
    color: var(--text-light);
    margin-top: 16px;
}

/* Format Table */
.format-table {
    max-width: 700px;
    margin: 60px auto 0;
}

.format-table h3 {
    text-align: center;
    font-size: 1.5rem;
    margin-bottom: 24px;
    color: var(--text-dark);
}

.format-table table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.format-table thead {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
}

.format-table th {
    padding: 16px;
    text-align: left;
    font-weight: 600;
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.format-table td {
    padding: 16px;
    text-align: left;
    border-bottom: 1px solid var(--border);
    color: var(--text-dark);
    font-size: 0.95rem;
}

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

.format-table tbody tr:hover {
    background: var(--bg-gray);
}

.format-name {
    font-weight: 600;
    color: var(--primary-dark);
}

.size-value {
    font-family: 'Monaco', 'Menlo', 'Consolas', monospace;
    font-weight: 600;
    color: var(--primary);
}

.table-note {
    text-align: center;
    color: var(--text-light);
    font-size: 0.875rem;
    margin-top: 16px;
}

/* Footer */
.footer {
    background: var(--bg-dark);
    color: white;
    padding: 60px 0 40px;
    border-top: 1px solid var(--border);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
}

.footer-section h4 {
    margin-bottom: 16px;
    font-size: 1.125rem;
}

.footer-section p {
    color: var(--text-light);
    margin-bottom: 8px;
}

.footer-section a {
    display: block;
    color: var(--text-light);
    text-decoration: none;
    margin-bottom: 8px;
    transition: color 0.2s;
}

.footer-section a:hover {
    color: white;
}

.footer-section code {
    display: block;
    background: rgba(255, 255, 255, 0.1);
    padding: 12px;
    border-radius: 6px;
    font-family: 'Monaco', 'Menlo', 'Consolas', monospace;
    font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 3rem;
    }
    
    .nav-links {
        display: none;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
}