/* ---- GLOBAL VARIABLES ---- */
:root {
    --blue-900: #0c1a3a;
    --blue-800: #122450;
    --blue-700: #1a3570;
    --blue-600: #1e4d8f;
    --blue-500: #2563a8;
    --blue-400: #3b82c4;
    --blue-300: #6ba3d6;
    --blue-200: #a3c8e8;
    --blue-100: #dbeaf7;
    --blue-50: #f0f6fc;
    --white: #ffffff;
    --gray-50: #f8f9fb;
    --gray-100: #eef1f5;
    --gray-200: #d8dde6;
    --gray-300: #b0b8c8;
    --gray-400: #8892a4;
    --gray-500: #5f6b7a;
    --gray-600: #3d4856;
    --gray-700: #2a3240;
    --gray-800: #1a2030;
    --accent: #e8a825;
    --font-body: 'DM Sans', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --sidebar-width: 280px;
    --header-height: 64px;
}

[data-theme="dark"] {
    --white: #0d1117;
    --gray-50: #161b22;
    --gray-100: #21262d;
    --gray-200: #30363d;
    --gray-300: #484f58;
    --gray-400: #8b949e;
    --gray-500: #c9d1d9;
    --gray-600: #d1d5db;
    --gray-700: #f0f6fc;
    --gray-800: #ffffff;
    --blue-50: #13233a;
    --blue-100: #1c355a;
    --blue-900: #ffffff;
    --blue-800: #e6edf3;
    --blue-700: #6ba3d6;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    color: var(--gray-700);
    background: var(--white);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    transition: background-color 0.3s, color 0.3s;
}

/* ---- NAV ---- */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(var(--white-rgb, 255, 255, 255), 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--gray-100);
    transition: box-shadow 0.3s, background-color 0.3s;
}

[data-theme="dark"] .nav {
    background: rgba(13, 17, 23, 0.92);
}

.nav.scrolled {
    box-shadow: 0 1px 12px rgba(0, 0, 0, 0.06);
}

.nav-inner {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 32px;
    height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--blue-800);
    flex-shrink: 0;
}

.nav-logo-icon {
    width: 34px;
    height: 34px;
}

.nav-logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 28px;
    list-style: none;
}

.nav-links a {
    text-decoration: none;
    color: var(--gray-500);
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.2s;
    white-space: nowrap;
}

.nav-links a:hover, .nav-links a.active {
    color: var(--blue-600);
}

.nav-links a.active {
    border-bottom: 2px solid var(--blue-600);
    padding-bottom: 4px;
}

/* ---- SEARCH BAR ---- */
.search-container {
    position: relative;
    flex-grow: 1;
    max-width: 400px;
}

.search-input {
    width: 100%;
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    border-radius: 8px;
    padding: 8px 12px 8px 36px;
    font-size: 0.9rem;
    color: var(--gray-700);
    outline: none;
    transition: all 0.2s;
}

.search-input:focus {
    border-color: var(--blue-400);
    box-shadow: 0 0 0 3px rgba(37, 99, 168, 0.1);
    background: var(--white);
}

.search-icon {
    position: absolute;
    left: 10px;
    top: 50%;
    transform: translateY(-50%);
    width: 16px;
    height: 16px;
    color: var(--gray-400);
    pointer-events: none;
}

/* ---- ICON ACTIONS ---- */
.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.icon-btn {
    background: none;
    border: none;
    color: var(--gray-500);
    cursor: pointer;
    padding: 6px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.icon-btn:hover {
    background: var(--gray-100);
    color: var(--blue-600);
}

.icon-btn svg {
    width: 20px;
    height: 20px;
}

/* ---- DOCS LAYOUT ---- */
.docs-container {
    display: flex;
    margin-top: var(--header-height);
    min-height: calc(100vh - var(--header-height));
    max-width: 1440px;
    margin-left: auto;
    margin-right: auto;
}

.sidebar {
    width: var(--sidebar-width);
    border-right: 1px solid var(--gray-100);
    padding: 32px 24px;
    position: fixed;
    top: var(--header-height);
    bottom: 0;
    overflow-y: auto;
    background: var(--white);
    transition: background-color 0.3s;
}

.main-content {
    flex-grow: 1;
    margin-left: var(--sidebar-width);
    padding: 48px 64px;
    max-width: 960px;
}

/* ---- SIDEBAR NAV ---- */
.sidebar-section {
    margin-bottom: 32px;
}

.sidebar-title {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--gray-400);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 12px;
}

.sidebar-links {
    list-style: none;
}

.sidebar-links li {
    margin-bottom: 8px;
}

.sidebar-links a {
    text-decoration: none;
    color: var(--gray-600);
    font-size: 0.95rem;
    display: block;
    padding: 6px 0;
    transition: color 0.2s;
}

.sidebar-links a:hover, .sidebar-links a.active {
    color: var(--blue-500);
    font-weight: 500;
}

/* ---- CONTENT ELEMENTS ---- */
.content h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--blue-900);
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.content h2 {
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--blue-800);
    margin-top: 48px;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--gray-100);
}

.content p {
    margin-bottom: 24px;
    font-size: 1.05rem;
    color: var(--gray-600);
}

.content code {
    background: var(--gray-50);
    padding: 3px 6px;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.9em;
    color: var(--blue-600);
}

/* ---- CODE BLOCK ENHANCEMENT ---- */
.code-container {
    position: relative;
    margin: 32px 0;
    border-radius: 12px;
    background: #1e1e1e;
    overflow: hidden;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
}

.code-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 16px;
    background: rgba(255, 255, 255, 0.05);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.code-dots {
    display: flex;
    gap: 6px;
}

.code-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.dot-red { background: #ff5f57; }
.dot-yellow { background: #febc2e; }
.dot-green { background: #28c840; }

.code-lang {
    font-size: 0.75rem;
    color: var(--gray-400);
    font-family: var(--font-mono);
    text-transform: lowercase;
}

.code-block {
    margin: 0;
    padding: 20px;
    background: transparent !important;
    box-shadow: none;
}

.code-block pre {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    line-height: 1.7;
    color: #dcdcdc; /* VS Code Default Text */
    margin: 0;
}

/* Syntax Highlighting (VS Code Dark Style) */
.kw { color: #569cd6; } /* keyword */
.fn { color: #dcdcaa; } /* function */
.str { color: #ce9178; } /* string */
.num { color: #b5cea8; } /* number */
.cm { color: #6a9955; font-style: italic; } /* comment */
.op { color: #d4d4d4; } /* operator */
.var { color: #9cdcfe; } /* variable */
.typ { color: #4ec9b0; } /* type/class */
.imp { color: #c586c0; } /* import/control flow */

/* Copy Button Styling */
.copy-btn {
    position: absolute;
    top: 48px;
    right: 12px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--gray-300);
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    backdrop-filter: blur(4px);
    transition: all 0.2s;
    opacity: 0;
    visibility: hidden;
}

.code-container:hover .copy-btn {
    opacity: 1;
    visibility: visible;
}

.copy-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    color: var(--white);
    border-color: var(--blue-400);
}

.copy-btn.copied {
    background: #28c840;
    color: white;
    border-color: #28c840;
}

/* Breadcrumbs */
.breadcrumbs {
    display: flex;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--gray-400);
    margin-bottom: 24px;
}

.breadcrumb-item::after {
    content: '/';
    margin-left: 8px;
}

.breadcrumb-item:last-child::after {
    content: '';
}

/* ---- FOOTER ---- */
.footer {
    background: var(--gray-50);
    border-top: 1px solid var(--gray-100);
    padding: 48px 32px;
    transition: background-color 0.3s;
}

.footer-inner {
    max-width: 1120px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-left {
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-left svg {
    width: 28px;
    height: 28px;
}

.footer-text {
    font-size: 0.85rem;
    color: var(--gray-400);
}

.footer-links {
    display: flex;
    gap: 24px;
    list-style: none;
}

.footer-links a {
    text-decoration: none;
    color: var(--gray-400);
    font-size: 0.85rem;
    font-weight: 500;
    transition: color 0.2s;
}

.footer-links a:hover {
    color: var(--blue-600);
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.animate-fade {
    animation: fadeIn 0.5s ease both;
}

/* Responsive Docs */
@media (max-width: 960px) {
    .sidebar {
        display: none;
    }
    .main-content {
        margin-left: 0;
        padding: 32px 24px;
    }
}