:root {
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --secondary-color: #10b981;
    --accent-color: #f59e0b;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-tertiary: #f3f4f6;
    --border-color: #e5e7eb;
    --success-color: #10b981;
    --error-color: #ef4444;
    --warning-color: #f59e0b;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
        'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-secondary);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Header */
.header {
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
}

.logo {
    display: flex;
    align-items: center;
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin: 0;
}

.nav {
    display: flex;
    gap: 2rem;
}

.nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
    padding: 0.5rem 0;
}

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

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

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 300;
    opacity: 0.9;
}

/* Welcome Section */
.welcome {
    padding: 4rem 0;
    background-color: var(--bg-primary);
}

.welcome h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.intro-text {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    line-height: 1.8;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-card {
    background: var(--bg-secondary);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: transform 0.2s, box-shadow 0.2s;
}

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

.feature-icon {
    font-size: 2rem;
    color: var(--success-color);
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

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

/* Endpoints Section */
.endpoints-section {
    padding: 4rem 0;
    background-color: var(--bg-secondary);
}

.endpoints-section h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.section-intro {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
}

.endpoint-cards {
    display: grid;
    gap: 2rem;
}

.endpoint-card {
    background: var(--bg-primary);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
    text-decoration: none;
    color: inherit;
    display: block;
}

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

.endpoint-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.method {
    padding: 0.25rem 0.75rem;
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.method-get {
    background-color: #dbeafe;
    color: #1e40af;
}

.method-post {
    background-color: #d1fae5;
    color: #065f46;
}

.endpoint-path {
    font-family: 'Monaco', 'Menlo', 'Courier New', monospace;
    background-color: var(--bg-tertiary);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-size: 0.9rem;
    color: var(--text-primary);
    flex: 1;
}

.endpoint-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.endpoint-card p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 1rem;
}

.endpoint-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.tag {
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
}

/* Resources Section */
.resources-section {
    padding: 4rem 0;
    background-color: var(--bg-primary);
}

.resources-section h2 {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--text-primary);
}

.resources-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.resource-card {
    background: var(--bg-secondary);
    padding: 2rem;
    border-radius: 12px;
    border: 2px solid var(--border-color);
    transition: all 0.3s;
    text-decoration: none;
    color: inherit;
    display: block;
    position: relative;
    overflow: hidden;
}

.resource-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transform: scaleX(0);
    transition: transform 0.3s;
}

.resource-card:hover::before {
    transform: scaleX(1);
}

.resource-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.resource-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.resource-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.resource-card p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 1rem;
}

.badge {
    display: inline-block;
    background-color: var(--primary-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Changelog Section */
.changelog-section {
    padding: 4rem 0;
    background-color: var(--bg-secondary);
}

.changelog-section h2 {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--text-primary);
}

.changelog-entry {
    background: var(--bg-primary);
    padding: 2rem;
    border-radius: 12px;
    border-left: 4px solid var(--primary-color);
    box-shadow: var(--shadow-md);
    margin-bottom: 2rem;
}

.changelog-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.version-badge {
    background-color: var(--primary-color);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.9rem;
}

.version-badge.new {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
}

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

.changelog-entry h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.changelog-list {
    list-style: none;
    padding-left: 0;
}

.changelog-list li {
    padding: 0.5rem 0;
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.6;
}

/* Footer */
.footer {
    background-color: var(--text-primary);
    color: white;
    padding: 3rem 0;
    margin-top: 4rem;
}

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

.footer-content p {
    margin-bottom: 0.5rem;
    opacity: 0.9;
}

.footer-help {
    opacity: 0.7;
    font-size: 0.9rem;
}

/* Code blocks */
code {
    font-family: 'Monaco', 'Menlo', 'Courier New', monospace;
    background-color: var(--bg-tertiary);
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    font-size: 0.9em;
}

pre {
    background-color: var(--text-primary);
    color: #f8f8f2;
    padding: 1.5rem;
    border-radius: 8px;
    overflow-x: auto;
    margin: 1rem 0;
}

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

/* Responsive */
@media (max-width: 768px) {
    .header .container {
        flex-direction: column;
        gap: 1rem;
    }

    .nav {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1.25rem;
    }

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

    .container {
        padding: 0 1rem;
    }
}

/* Documentation page specific styles */
.doc-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 3rem 2rem;
    background-color: var(--bg-primary);
}

.doc-header {
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 2rem;
    margin-bottom: 2rem;
}

.doc-title {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.doc-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
}

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

.doc-section h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
}

.doc-section h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    margin-top: 2rem;
    color: var(--text-primary);
}

.doc-section p {
    margin-bottom: 1rem;
    line-height: 1.8;
    color: var(--text-secondary);
}

.param-table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    background-color: var(--bg-primary);
    box-shadow: var(--shadow-sm);
    border-radius: 8px;
    overflow: hidden;
}

.param-table th,
.param-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.param-table th {
    background-color: var(--bg-secondary);
    font-weight: 600;
    color: var(--text-primary);
}

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

.param-table tr:hover {
    background-color: var(--bg-secondary);
}

.required-badge {
    background-color: var(--error-color);
    color: white;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.optional-badge {
    background-color: var(--text-light);
    color: white;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.response-example {
    background-color: var(--text-primary);
    color: #f8f8f2;
    padding: 1.5rem;
    border-radius: 8px;
    overflow-x: auto;
    margin: 1rem 0;
}

.alert {
    padding: 1rem 1.5rem;
    border-radius: 8px;
    margin: 1.5rem 0;
    border-left: 4px solid;
}

.alert-info {
    background-color: #dbeafe;
    border-color: var(--primary-color);
    color: #1e40af;
}

.alert-warning {
    background-color: #fef3c7;
    border-color: var(--warning-color);
    color: #92400e;
}

.alert-success {
    background-color: #d1fae5;
    border-color: var(--success-color);
    color: #065f46;
}

.alert-error {
    background-color: #fee2e2;
    border-color: var(--error-color);
    color: #991b1b;
}

.back-link {
    display: inline-block;
    margin-bottom: 2rem;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.back-link:hover {
    color: var(--primary-dark);
}

.back-link::before {
    content: '← ';
}