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

:root {
    --primary-color: #6366f1;
    --secondary-color: #8b5cf6;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-dark: #111827;
    --border-color: #e5e7eb;
    --success: #10b981;
    --error: #ef4444;
    --code-bg: #1e293b;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
}

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

/* Navigation */
.navbar {
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    background-color: rgba(255, 255, 255, 0.95);
}

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

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
}

.version {
    background-color: var(--primary-color);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

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

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

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 6rem 0;
    text-align: center;
}

.hero h1 {
    font-size: 4rem;
    margin-bottom: 1rem;
    font-weight: 900;
}

.subtitle {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    opacity: 0.9;
}

.tagline {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.85;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.2s;
    border: 2px solid transparent;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.btn-secondary {
    background-color: transparent;
    color: white;
    border-color: white;
}

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

.btn-outline {
    background-color: transparent;
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-outline:hover {
    background-color: var(--primary-color);
    color: white;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 2rem;
}

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

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.feature-card {
    background-color: var(--bg-primary);
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    transition: transform 0.2s;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

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

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
}

/* Overview Section */
.overview {
    padding: 4rem 0;
}

.overview h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    text-align: center;
}

.overview > .container > p {
    text-align: center;
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 800px;
    margin: 0 auto 3rem;
}

.comparison {
    margin-top: 3rem;
}

.comparison h3 {
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
    text-align: center;
}

.comparison-table {
    overflow-x: auto;
}

.comparison-table table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--bg-primary);
    border-radius: 8px;
    overflow: hidden;
}

.comparison-table th,
.comparison-table td {
    padding: 1rem;
    text-align: center;
}

.comparison-table thead {
    background-color: var(--primary-color);
    color: white;
}

.comparison-table tbody tr {
    border-bottom: 1px solid var(--border-color);
}

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

.comparison-table .yes {
    color: var(--success);
    font-size: 1.25rem;
}

.comparison-table .no {
    color: var(--error);
    font-size: 1.25rem;
}

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

.endpoints h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
}

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

.endpoint-card {
    background-color: var(--bg-primary);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.endpoint-method {
    display: inline-block;
    background-color: var(--success);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    font-size: 0.875rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.endpoint-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    font-family: 'Courier New', monospace;
    color: var(--primary-color);
}

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

.learn-more {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
}

.learn-more:hover {
    text-decoration: underline;
}

/* Quick Start Section */
.quick-start {
    padding: 4rem 0;
}

.quick-start h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 2rem;
}

.code-example {
    background-color: var(--code-bg);
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 2rem;
}

.code-header {
    background-color: #0f172a;
    color: white;
    padding: 1rem 1.5rem;
    font-weight: 600;
}

.code-example pre {
    padding: 1.5rem;
    overflow-x: auto;
}

.code-example code {
    font-family: 'Courier New', monospace;
    color: #e2e8f0;
    font-size: 0.9rem;
    line-height: 1.6;
}

/* Get Started Section */
.get-started {
    padding: 4rem 0;
    background-color: var(--bg-secondary);
}

.get-started h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
}

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

.get-started-card {
    background-color: var(--bg-primary);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    text-align: center;
}

.get-started-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.get-started-card p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

/* Footer */
.footer {
    background-color: var(--bg-dark);
    color: white;
    padding: 2rem 0;
    text-align: center;
}

.footer a {
    color: white;
    text-decoration: none;
}

.footer a:hover {
    text-decoration: underline;
}

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

    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: 1rem;
    }

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

    .subtitle {
        font-size: 1.25rem;
    }

    .tagline {
        font-size: 1rem;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: stretch;
    }

    .features-grid,
    .endpoints-grid,
    .get-started-grid {
        grid-template-columns: 1fr;
    }

    .container {
        padding: 0 1rem;
    }
}

/* Specification Page Styles */
.spec-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 4rem 0;
    text-align: center;
}

.spec-content {
    padding: 4rem 0;
}

.spec-section {
    margin-bottom: 4rem;
}

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

.spec-section h3 {
    font-size: 1.5rem;
    margin: 2rem 0 1rem;
    color: var(--text-primary);
}

.spec-section h4 {
    font-size: 1.25rem;
    margin: 1.5rem 0 0.75rem;
    color: var(--text-primary);
}

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

.spec-section ul,
.spec-section ol {
    margin-left: 2rem;
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

.spec-section li {
    margin-bottom: 0.5rem;
}

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

.spec-table th,
.spec-table td {
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

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

.spec-table code {
    background-color: var(--bg-secondary);
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    font-size: 0.875rem;
    font-family: 'Courier New', monospace;
}

.info-box {
    background-color: #dbeafe;
    border-left: 4px solid #3b82f6;
    padding: 1rem 1.5rem;
    margin: 1.5rem 0;
    border-radius: 4px;
}

.warning-box {
    background-color: #fef3c7;
    border-left: 4px solid #f59e0b;
    padding: 1rem 1.5rem;
    margin: 1.5rem 0;
    border-radius: 4px;
}

.success-box {
    background-color: #d1fae5;
    border-left: 4px solid #10b981;
    padding: 1rem 1.5rem;
    margin: 1.5rem 0;
    border-radius: 4px;
}

/* Clients Page Styles */
.clients-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 4rem 0;
    text-align: center;
}

.clients-content {
    padding: 4rem 0;
}

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

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

.client-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

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

.client-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.client-platform {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

.client-card p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.client-links {
    display: flex;
    gap: 1rem;
}

.client-links a {
    flex: 1;
    text-align: center;
}

.placeholder-text {
    text-align: center;
    color: var(--text-secondary);
    font-style: italic;
    padding: 2rem;
}

.submit-client {
    background-color: var(--bg-secondary);
    padding: 3rem;
    border-radius: 12px;
    text-align: center;
}

.submit-client h3 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
}

.submit-client p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}