:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary: #64748b;
    --bg-light: #f8fafc;
    --text-main: #1e293b;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --white: #ffffff;
}

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

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    line-height: 1.6;
    color: var(--text-main);
    background-color: var(--bg-light);
}

.container {
    max-width: 1024px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Header */
header {
    background-color: var(--white);
    border-bottom: 1px solid var(--border);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 10;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    margin-left: 1.5rem;
    font-weight: 500;
}

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

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--white);
    padding: 4rem 0;
    text-align: center;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.2rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto 2rem;
}

/* Cards Grid */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.card {
    background: var(--white);
    padding: 2rem;
    border-radius: 0.5rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    transition: transform 0.2s;
    text-decoration: none;
    color: inherit;
    border: 1px solid var(--border);
}

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

.card h2 {
    color: var(--primary);
    margin-bottom: 0.5rem;
}

/* Documentation Layout */
.docs-layout {
    display: flex;
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

.docs-sidebar {
    width: 250px;
    flex-shrink: 0;
}

.docs-nav {
    position: sticky;
    top: 5rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.docs-nav a {
    color: var(--text-muted);
    text-decoration: none;
    padding: 0.5rem;
    border-radius: 0.25rem;
    transition: all 0.2s;
    font-size: 0.95rem;
}

.docs-nav a:hover, .docs-nav a.active {
    color: var(--primary);
    background-color: #eff6ff;
}

.docs-main {
    flex: 1;
    min-width: 0;
}

/* Documentation Content */
.doc-content {
    background: var(--white);
    padding: 2rem;
    border-radius: 0.5rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .docs-layout {
        flex-direction: column;
    }
    
    .docs-sidebar {
        width: 100%;
        border-bottom: 1px solid var(--border);
        padding-bottom: 1rem;
    }

    .docs-nav {
        position: static;
    }
}

.doc-section {
    margin-bottom: 3rem;
}

.doc-section h2 {
    font-size: 1.8rem;
    color: var(--text-main);
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--border);
}

.doc-section h3 {
    font-size: 1.3rem;
    margin: 1.5rem 0 0.8rem;
    color: var(--primary-dark);
}

.step {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.step-number {
    background: var(--primary);
    color: var(--white);
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    flex-shrink: 0;
}

.warning-box {
    background-color: #fef2f2;
    border-left: 4px solid #ef4444;
    padding: 1rem;
    margin: 1rem 0;
    color: #991b1b;
}

.info-box {
    background-color: #eff6ff;
    border-left: 4px solid #3b82f6;
    padding: 1rem;
    margin: 1rem 0;
    color: #1e40af;
}

ul {
    padding-left: 1.5rem;
    margin-bottom: 1rem;
}

li {
    margin-bottom: 0.5rem;
}

/* Footer */
footer {
    background-color: var(--text-main);
    color: var(--white);
    padding: 2rem 0;
    text-align: center;
    margin-top: auto;
}

.footer-link {
    color: rgba(255,255,255,0.7);
    text-decoration: none;
}