/* ==============================================================================
   YetuStream Documentation — Stylesheet
   Modern, Responsive, Clean Documentation Design (Envato Market Standard)
   ============================================================================== */

:root {
    --primary: #0284c7;
    --primary-hover: #0369a1;
    --primary-light: #f0f9ff;
    --primary-border: #bae6fd;
    --accent: #38bdf8;
    --dark: #0f172a;
    --dark-surface: #1e293b;
    --dark-border: #334155;
    --text-main: #334155;
    --text-heading: #0f172a;
    --text-muted: #64748b;
    --bg-main: #f8fafc;
    --bg-surface: #ffffff;
    --border-color: #e2e8f0;
    --success: #10b981;
    --success-bg: #ecfdf5;
    --warning: #f59e0b;
    --warning-bg: #fffbeb;
    --danger: #ef4444;
    --danger-bg: #fef2f2;
    --sidebar-width: 280px;
    --header-height: 70px;
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
    --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-sans);
    color: var(--text-main);
    background-color: var(--bg-main);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
}

/* ==============================================================================
   Layout & Grid
   ============================================================================== */
.doc-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: var(--dark);
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    z-index: 100;
    border-bottom: 1px solid var(--dark-border);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.doc-logo-area {
    display: flex;
    align-items: center;
    gap: 12px;
}

.doc-logo-badge {
    background: linear-gradient(135deg, var(--primary) 0%, #2563eb 100%);
    color: #ffffff;
    width: 38px;
    height: 38px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 800;
}

.doc-logo-text {
    font-size: 1.25rem;
    font-weight: 800;
    color: #ffffff;
    letter-spacing: -0.02em;
}

.doc-logo-text span {
    color: var(--accent);
}

.doc-logo-version {
    background: var(--dark-border);
    color: var(--accent);
    font-size: 0.75rem;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 20px;
    margin-left: 6px;
    text-transform: uppercase;
}

.doc-header-nav {
    display: flex;
    align-items: center;
    gap: 16px;
}

.doc-header-link {
    color: #94a3b8;
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 600;
    transition: color 0.2s;
}

.doc-header-link:hover {
    color: #ffffff;
}

.doc-badge-pill {
    background: #10b981;
    color: #ffffff;
    font-size: 0.75rem;
    font-weight: 800;
    padding: 4px 10px;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.mobile-toggle-btn {
    display: none;
    background: none;
    border: none;
    color: #ffffff;
    font-size: 24px;
    cursor: pointer;
}

/* ==============================================================================
   Sidebar Navigation
   ============================================================================== */
.doc-layout {
    display: flex;
    margin-top: var(--header-height);
}

.doc-sidebar {
    position: fixed;
    top: var(--header-height);
    bottom: 0;
    left: 0;
    width: var(--sidebar-width);
    background: var(--bg-surface);
    border-right: 1px solid var(--border-color);
    overflow-y: auto;
    padding: 24px 16px;
    z-index: 50;
}

.doc-search-box {
    margin-bottom: 20px;
}

.doc-search-input {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 0.875rem;
    background: var(--bg-main);
    color: var(--text-main);
    outline: none;
    transition: border-color 0.2s;
}

.doc-search-input:focus {
    border-color: var(--primary);
    background: #ffffff;
    box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.12);
}

.sidebar-group-title {
    font-size: 0.72rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    padding: 12px 12px 6px 12px;
}

.sidebar-nav-list {
    list-style: none;
    margin-bottom: 16px;
}

.sidebar-nav-item {
    margin-bottom: 2px;
}

.sidebar-nav-link {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    color: var(--text-main);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: 6px;
    transition: all 0.15s ease;
}

.sidebar-nav-link:hover {
    color: var(--primary);
    background: var(--primary-light);
}

.sidebar-nav-link.active {
    color: var(--primary);
    background: var(--primary-light);
    font-weight: 700;
    border-left: 3px solid var(--primary);
}

/* ==============================================================================
   Main Content Area
   ============================================================================== */
.doc-main {
    margin-left: var(--sidebar-width);
    flex: 1;
    padding: 40px 60px 80px 60px;
    max-width: 1050px;
}

.doc-section {
    margin-bottom: 60px;
    padding-bottom: 40px;
    border-bottom: 1px solid var(--border-color);
}

.doc-section:last-child {
    border-bottom: none;
}

.doc-title {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--text-heading);
    margin-bottom: 12px;
    letter-spacing: -0.025em;
    line-height: 1.25;
}

.doc-lead {
    font-size: 1.125rem;
    color: var(--text-muted);
    margin-bottom: 24px;
    line-height: 1.7;
}

.doc-h2 {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-heading);
    margin: 32px 0 16px 0;
    letter-spacing: -0.02em;
    display: flex;
    align-items: center;
    gap: 10px;
}

.doc-h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-heading);
    margin: 24px 0 12px 0;
}

p {
    margin-bottom: 16px;
}

ul, ol {
    margin: 0 0 20px 24px;
}

li {
    margin-bottom: 8px;
}

/* ==============================================================================
   Alerts & Callouts
   ============================================================================== */
.doc-alert {
    padding: 16px 20px;
    border-radius: 10px;
    margin: 20px 0;
    display: flex;
    gap: 14px;
    align-items: flex-start;
    font-size: 0.925rem;
    line-height: 1.6;
}

.doc-alert-icon {
    font-size: 20px;
    line-height: 1;
    flex-shrink: 0;
}

.doc-alert.info {
    background: var(--primary-light);
    border: 1px solid var(--primary-border);
    color: #075985;
}

.doc-alert.success {
    background: var(--success-bg);
    border: 1px solid #a7f3d0;
    color: #065f46;
}

.doc-alert.warning {
    background: var(--warning-bg);
    border: 1px solid #fde68a;
    color: #92400e;
}

.doc-alert.danger {
    background: var(--danger-bg);
    border: 1px solid #fecaca;
    color: #991b1b;
}

/* ==============================================================================
   Code Snippets & Terminals
   ============================================================================== */
.code-block-wrapper {
    position: relative;
    background: var(--dark);
    border-radius: 10px;
    margin: 20px 0;
    overflow: hidden;
    box-shadow: 0 8px 24px rgba(15, 23, 42, 0.15);
    border: 1px solid var(--dark-border);
}

.code-header {
    background: var(--dark-surface);
    padding: 10px 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--dark-border);
}

.code-title {
    font-size: 0.75rem;
    font-family: var(--font-mono);
    color: #94a3b8;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.btn-copy {
    background: var(--dark-border);
    color: #ffffff;
    border: none;
    border-radius: 6px;
    padding: 4px 10px;
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

.btn-copy:hover {
    background: var(--primary);
}

pre {
    padding: 16px 20px;
    overflow-x: auto;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    line-height: 1.6;
    color: #f1f5f9;
}

code {
    font-family: var(--font-mono);
    font-size: 0.875em;
    background: #e2e8f0;
    color: #0f172a;
    padding: 2px 6px;
    border-radius: 4px;
}

pre code {
    background: transparent;
    color: inherit;
    padding: 0;
}

/* ==============================================================================
   Tables
   ============================================================================== */
.doc-table-wrap {
    overflow-x: auto;
    margin: 20px 0;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.02);
}

.doc-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
    background: #ffffff;
    text-align: left;
}

.doc-table th {
    background: var(--bg-main);
    color: var(--text-heading);
    font-weight: 700;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
}

.doc-table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-main);
}

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

.doc-table tr:hover td {
    background: #f8fafc;
}

/* ==============================================================================
   Cards & Feature Highlights
   ============================================================================== */
.doc-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
    margin: 24px 0;
}

.doc-card {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03);
    transition: transform 0.2s, box-shadow 0.2s;
}

.doc-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
    border-color: var(--primary-border);
}

.doc-card-icon {
    font-size: 28px;
    margin-bottom: 12px;
}

.doc-card-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-heading);
    margin-bottom: 8px;
}

.doc-card-desc {
    font-size: 0.875rem;
    color: var(--text-muted);
    line-height: 1.5;
    margin: 0;
}

/* ==============================================================================
   Footer
   ============================================================================== */
.doc-footer {
    margin-top: 60px;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ==============================================================================
   Responsive Queries
   ============================================================================== */
@media (max-width: 992px) {
    .doc-sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }

    .doc-sidebar.open {
        transform: translateX(0);
        box-shadow: 0 0 40px rgba(0, 0, 0, 0.3);
    }

    .doc-main {
        margin-left: 0;
        padding: 30px 24px;
    }

    .mobile-toggle-btn {
        display: block;
    }
}