:root {
    --bg-primary: #000000;
    --bg-secondary: #0a0a0a;
    --bg-tertiary: #111111;
    --bg-card: #171717;
    --bg-code: #1a1a1a;
    --border-color: #262626;
    --border-color-hover: #404040;
    --text-primary: #ededed;
    --text-secondary: #a1a1a1;
    --text-muted: #737373;
    --accent-primary: #0070f3;
    --accent-secondary: #3291ff;
    --accent-gradient: linear-gradient(135deg, #0070f3 0%, #00a6ed 100%);
    --success: #22c55e;
    --success-bg: rgba(34, 197, 94, 0.1);
    --warning: #f59e0b;
    --warning-bg: rgba(245, 158, 11, 0.1);
    --error: #ef4444;
    --error-bg: rgba(239, 68, 68, 0.1);
    --info: #3b82f6;
    --info-bg: rgba(59, 130, 246, 0.1);
    --sidebar-width: 280px;
    --header-height: 64px;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -4px rgba(0, 0, 0, 0.4);
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: calc(var(--header-height) + 24px);
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background-color: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    z-index: 100;
    transition: transform 0.3s ease;
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

.logo svg {
    color: var(--accent-primary);
}

.sidebar-close {
    display: none;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px;
    border-radius: var(--radius-sm);
    transition: all 0.2s;
}

.sidebar-close:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: 16px 0;
}

.sidebar-nav ul {
    list-style: none;
}

.sidebar-nav > ul > li {
    margin-bottom: 4px;
}

.nav-link {
    display: block;
    padding: 10px 24px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    transition: all 0.2s;
    border-left: 2px solid transparent;
}

.nav-link:hover {
    color: var(--text-primary);
    background-color: var(--bg-tertiary);
}

.nav-link.active {
    color: var(--text-primary);
    background-color: var(--bg-tertiary);
    border-left-color: var(--accent-primary);
}

.nav-group {
    margin-top: 16px;
}

.nav-group-title {
    display: block;
    padding: 8px 24px;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.nav-group ul {
    margin-top: 4px;
}

.nav-group .nav-link {
    padding-left: 36px;
}

.sidebar-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
}

.version {
    font-size: 12px;
    color: var(--text-muted);
    background-color: var(--bg-tertiary);
    padding: 4px 8px;
    border-radius: var(--radius-sm);
}

/* Main Content */
.main-content {
    margin-left: var(--sidebar-width);
    min-height: 100vh;
}

/* Header */
.header {
    position: sticky;
    top: 0;
    height: var(--header-height);
    background-color: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 32px;
    z-index: 50;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    padding: 8px;
    border-radius: var(--radius-sm);
    transition: background-color 0.2s;
}

.menu-toggle:hover {
    background-color: var(--bg-tertiary);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-left: auto;
}

.lang-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 8px 16px;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.lang-toggle:hover {
    background-color: var(--bg-tertiary);
    border-color: var(--border-color-hover);
}

.lang-label {
    font-weight: 600;
}

/* Content */
.content {
    max-width: 900px;
    margin: 0 auto;
    padding: 48px 32px;
}

.section {
    margin-bottom: 64px;
    scroll-margin-top: calc(var(--header-height) + 24px);
}

h1 {
    font-size: 40px;
    font-weight: 700;
    margin-bottom: 8px;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

h2 {
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

h3 {
    font-size: 20px;
    font-weight: 600;
    margin-top: 32px;
    margin-bottom: 12px;
}

h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
}

.subtitle {
    color: var(--text-muted);
    font-size: 14px;
    margin-bottom: 24px;
}

p {
    margin-bottom: 16px;
    color: var(--text-secondary);
}

/* Card */
.card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-bottom: 24px;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-top: 24px;
}

.feature-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
    transition: all 0.2s;
}

.feature-card:hover {
    border-color: var(--border-color-hover);
    transform: translateY(-2px);
}

.feature-icon {
    width: 48px;
    height: 48px;
    background: var(--accent-gradient);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
}

.feature-icon svg {
    color: white;
}

.feature-card h3 {
    margin-top: 0;
    font-size: 16px;
}

.feature-card p {
    margin-bottom: 0;
    font-size: 14px;
}

/* Code Block */
.code-block {
    background-color: var(--bg-code);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    margin: 16px 0;
    overflow: hidden;
}

.code-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background-color: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
    font-size: 13px;
    color: var(--text-muted);
}

.copy-btn {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 4px 12px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    cursor: pointer;
    transition: all 0.2s;
}

.copy-btn:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

.copy-btn.copied {
    background-color: var(--success-bg);
    border-color: var(--success);
    color: var(--success);
}

pre {
    padding: 16px;
    overflow-x: auto;
    font-family: var(--font-mono);
    font-size: 13px;
    line-height: 1.7;
}

code {
    font-family: var(--font-mono);
    font-size: 0.9em;
    background-color: var(--bg-code);
    padding: 2px 6px;
    border-radius: 4px;
    color: var(--accent-secondary);
}

pre code {
    background: none;
    padding: 0;
    color: var(--text-primary);
}

/* Table */
.table-container {
    overflow-x: auto;
    margin: 16px 0;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

th, td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

th {
    background-color: var(--bg-tertiary);
    font-weight: 600;
    color: var(--text-primary);
}

td {
    color: var(--text-secondary);
}

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

tr:hover td {
    background-color: var(--bg-tertiary);
}

/* Badges */
.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 9999px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
}

.badge.required {
    background-color: var(--error-bg);
    color: var(--error);
}

.badge.optional {
    background-color: var(--bg-tertiary);
    color: var(--text-muted);
}

/* Endpoint Badge */
.endpoint-badge {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 8px 16px;
    border-radius: var(--radius-md);
    margin-bottom: 16px;
}

.method {
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
}

.method.get {
    background-color: var(--success-bg);
    color: var(--success);
}

.method.post {
    background-color: var(--info-bg);
    color: var(--info);
}

.method.put {
    background-color: var(--warning-bg);
    color: var(--warning);
}

.method.delete {
    background-color: var(--error-bg);
    color: var(--error);
}

/* Status Badge */
.status-badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 600;
}

.status-badge.success {
    background-color: var(--success-bg);
    color: var(--success);
}

.status-badge.failed {
    background-color: var(--error-bg);
    color: var(--error);
}

.status-badge.expired {
    background-color: var(--warning-bg);
    color: var(--warning);
}

/* Callout */
.callout {
    display: flex;
    gap: 16px;
    padding: 16px 20px;
    border-radius: var(--radius-md);
    margin: 16px 0;
    border: 1px solid;
}

.callout-icon {
    flex-shrink: 0;
    margin-top: 2px;
}

.callout-content {
    flex: 1;
}

.callout-content strong {
    display: block;
    margin-bottom: 4px;
}

.callout-content p {
    margin-bottom: 0;
}

.callout-content ul {
    margin: 8px 0 0 20px;
}

.callout-content li {
    margin-bottom: 4px;
    color: var(--text-secondary);
}

.callout.warning {
    background-color: var(--warning-bg);
    border-color: var(--warning);
}

.callout.warning .callout-icon {
    color: var(--warning);
}

.callout.info {
    background-color: var(--info-bg);
    border-color: var(--info);
}

.callout.info .callout-icon {
    color: var(--info);
}

.callout.success {
    background-color: var(--success-bg);
    border-color: var(--success);
}

.callout.success .callout-icon {
    color: var(--success);
}

/* Flow Diagram */
.flow-diagram {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin: 24px 0;
}

.flow-step {
    display: flex;
    gap: 16px;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 20px;
}

.flow-number {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    background: var(--accent-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 14px;
    color: white;
}

.flow-content h4 {
    color: var(--text-primary);
}

.flow-content p {
    margin-bottom: 0;
    font-size: 14px;
}

.flow-arrow {
    text-align: center;
    color: var(--text-muted);
    font-size: 20px;
}

/* Security Grid */
.security-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-top: 24px;
}

.security-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
}

.security-icon {
    width: 40px;
    height: 40px;
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 12px;
    color: var(--accent-primary);
}

.security-card h4 {
    margin-bottom: 12px;
}

.security-card ul {
    margin-left: 20px;
}

.security-card li {
    color: var(--text-secondary);
    margin-bottom: 4px;
    font-size: 14px;
}

.security-card code {
    display: block;
    margin-top: 8px;
    font-size: 12px;
}

/* Footer */
.footer {
    margin-top: 64px;
    padding-top: 32px;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.footer p {
    color: var(--text-muted);
    font-size: 14px;
}

/* Overlay */
.overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 90;
}

.overlay.active {
    display: block;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .features-grid,
    .security-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.active {
        transform: translateX(0);
    }

    .sidebar-close {
        display: block;
    }

    .main-content {
        margin-left: 0;
    }

    .menu-toggle {
        display: block;
    }

    .header {
        padding: 0 16px;
    }

    .content {
        padding: 24px 16px;
    }

    h1 {
        font-size: 28px;
    }

    h2 {
        font-size: 22px;
    }

    .table-container {
        margin-left: -16px;
        margin-right: -16px;
        border-radius: 0;
        border-left: none;
        border-right: none;
    }

    .code-block {
        margin-left: -16px;
        margin-right: -16px;
        border-radius: 0;
        border-left: none;
        border-right: none;
    }

    pre {
        font-size: 12px;
    }

    th, td {
        padding: 10px 12px;
        font-size: 13px;
    }

    .flow-step {
        flex-direction: column;
        gap: 12px;
    }

    .endpoint-badge {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 24px;
    }

    h2 {
        font-size: 20px;
    }

    h3 {
        font-size: 18px;
    }

    .feature-card,
    .security-card {
        padding: 16px;
    }

    .callout {
        flex-direction: column;
        gap: 12px;
    }

    .lang-toggle {
        padding: 6px 12px;
        font-size: 13px;
    }
}

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-color-hover);
}

/* Selection */
::selection {
    background-color: var(--accent-primary);
    color: white;
}