/* ==========================================================================
   VINTAGE STRIPE DOC SYSTEM (GROOVE & GRID / ANALOG NOIR)
   Vanilla CSS Documentation System
   ========================================================================== */

/* ── DESIGN TOKENS & CORE VARIABLES ──────────────────────────────────────── */
:root {
    /* Fonts */
    --font-headline: 'Sora', sans-serif;
    --font-body: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    /* Spacing & Layout */
    --container-max: 1280px;
    --sidebar-width: 280px;
    --toc-width: 200px;
    --gutter: 24px;
    --header-height: 64px;

    /* Shapes */
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;

    /* Light Theme (Groove & Grid) */
    --bg-color: #fcf8f9;
    --panel-bg: #FDFCFB;
    --text-color: #1b1b1c;
    --text-muted: #584238;
    --primary-color: #EF6D23;      /* Turntable Orange */
    --secondary-color: #3B82F6;    /* Needle Blue */
    --tertiary-color: #f4efe6;     /* Muted Warm Container */
    --border-color: #e0c0b3;
    --ghost-border: 1px solid var(--border-color);
    --header-bg: rgba(252, 248, 249, 0.85);
    
    /* Callout Colors */
    --info-bg: rgba(59, 130, 246, 0.08);
    --info-border: #3B82F6;
    --warn-bg: rgba(239, 109, 35, 0.08);
    --warn-border: #EF6D23;
    --success-bg: rgba(16, 185, 129, 0.08);
    --success-border: #10B981;

    /* Code block colors */
    --code-bg: #0F0F10;
    --code-text: #f8f8f2;
}

[data-theme="dark"] {
    /* Dark Theme (Analog Noir) */
    --bg-color: #0F0F10;            /* Vinyl Black */
    --panel-bg: #1A1A1B;            /* Brushed Faceplate Charcoal */
    --text-color: #e5e2e1;
    --text-muted: #a78b7f;
    --primary-color: #EF6D23;
    --secondary-color: #3B82F6;
    --tertiary-color: #2D2D2D;
    --border-color: #2D2D2D;
    --ghost-border: 1px solid var(--border-color);
    --header-bg: rgba(15, 15, 16, 0.85);

    /* Callout Colors */
    --info-bg: rgba(59, 130, 246, 0.12);
    --warn-bg: rgba(239, 109, 35, 0.12);
    --success-bg: rgba(16, 185, 129, 0.12);

    /* Code block colors */
    --code-bg: #000000;
    --code-text: #e5e2e1;
}

/* ── CSS RESET & BASE STYLES ─────────────────────────────────────────────── */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html, body {
    height: 100%;
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    scroll-behavior: smooth;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Scrollbars */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: var(--radius-sm);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}

/* ── TYPOGRAPHY ──────────────────────────────────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-headline);
    color: var(--text-color);
    font-weight: 700;
    line-height: 1.3;
    letter-spacing: -0.015em;
    margin-top: 1.8em;
    margin-bottom: 0.6em;
}

h1 { font-size: 2rem; margin-top: 0; letter-spacing: -0.02em; }
h2 { font-size: 1.5rem; border-bottom: 1px solid var(--border-color); padding-bottom: 0.3em; }
h3 { font-size: 1.2rem; }
p { margin-bottom: 1.25em; color: var(--text-color); opacity: 0.9; }

a {
    color: var(--secondary-color);
    text-decoration: none;
    transition: color 0.2s ease;
}
a:hover {
    color: var(--primary-color);
}

/* ── HEADER ──────────────────────────────────────────────────────────────── */
.top-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background-color: var(--header-bg);
    border-bottom: var(--ghost-border);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 100;
    display: flex;
    align-items: center;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.nav-container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--gutter);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: inherit;
}

.brand-logo {
    animation: rotate 20s linear infinite;
    animation-play-state: paused;
}
.brand:hover .brand-logo {
    animation-play-state: running;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.brand-name {
    font-family: var(--font-headline);
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-color);
    letter-spacing: -0.01em;
}

.brand-sub {
    color: var(--primary-color);
    font-size: 0.85rem;
    font-family: var(--font-mono);
    text-transform: uppercase;
    font-weight: 500;
    margin-left: 4px;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.btn-icon {
    background: transparent;
    border: none;
    cursor: pointer;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-color);
    opacity: 0.8;
    transition: background-color 0.2s, opacity 0.2s, transform 0.1s;
}

.btn-icon:hover {
    background-color: var(--tertiary-color);
    opacity: 1;
}

.btn-icon:active {
    transform: translateY(1px);
}

/* Show/hide theme icons */
.sun-icon { display: none; }
.moon-icon { display: block; }
[data-theme="dark"] .sun-icon { display: block; }
[data-theme="dark"] .moon-icon { display: none; }

/* ── LAYOUT STRUCTURE ────────────────────────────────────────────────────── */
.layout-wrapper {
    display: grid;
    grid-template-columns: var(--sidebar-width) 1fr var(--toc-width);
    max-width: var(--container-max);
    margin: 0 auto;
    padding-top: var(--header-height);
    height: 100vh;
}

/* ── LEFT SIDEBAR (NAV & SEARCH) ─────────────────────────────────────────── */
.sidebar-nav {
    position: sticky;
    top: var(--header-height);
    height: calc(100vh - var(--header-height));
    border-right: var(--ghost-border);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.sidebar-scroll-content {
    flex: 1;
    overflow-y: auto;
    padding: 32px var(--gutter) 24px var(--gutter);
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.search-trigger-container {
    width: 100%;
}

.search-trigger-input {
    width: 100%;
    background-color: var(--panel-bg);
    border: var(--ghost-border);
    border-radius: var(--radius-sm);
    padding: 8px 12px;
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    color: var(--text-muted);
    font-family: var(--font-body);
    font-size: 0.9rem;
    transition: border-color 0.2s, box-shadow 0.2s;
    text-align: left;
}

.search-trigger-input:hover {
    border-color: var(--primary-color);
}

.search-placeholder {
    flex-grow: 1;
}

.search-kbd-shortcut kbd {
    background-color: var(--tertiary-color);
    border: var(--ghost-border);
    border-radius: var(--radius-sm);
    padding: 2px 4px;
    font-size: 0.75rem;
    font-family: var(--font-mono);
}

.nav-links {
    display: flex;
    flex-direction: column;
}

.nav-group-title {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--text-muted);
    letter-spacing: 0.05em;
    margin-bottom: 12px;
    padding-left: 12px;
}

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

.nav-links li {
    margin-bottom: 4px;
}

.nav-item {
    display: flex;
    align-items: center;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    color: var(--text-color);
    font-size: 0.95rem;
    position: relative;
    transition: background-color 0.2s, color 0.2s;
}

.nav-item:hover {
    background-color: var(--tertiary-color);
    color: var(--primary-color);
}

.nav-item.active {
    font-weight: 600;
    color: var(--primary-color);
    background-color: var(--tertiary-color);
}

/* Needle active indicator */
.needle-indicator {
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%) scaleY(0);
    width: 2px;
    height: 16px;
    background-color: var(--primary-color);
    transition: transform 0.2s ease;
}

.nav-item.active .needle-indicator,
.nav-item:hover .needle-indicator {
    transform: translateY(-50%) scaleY(1);
}

/* ── CENTER CONTENT COLUMN ───────────────────────────────────────────────── */
.content-body {
    padding: 40px var(--gutter) 80px var(--gutter);
    overflow-y: auto;
    height: calc(100vh - var(--header-height));
}

.prose {
    max-width: 800px;
    margin: 0 auto;
}

/* ── RIGHT SIDEBAR (TOC) ─────────────────────────────────────────────────── */
.sidebar-toc {
    position: sticky;
    top: var(--header-height);
    height: calc(100vh - var(--header-height));
    overflow-y: auto;
    padding: 32px 0 32px var(--gutter);
}

.toc-container {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.toc-title {
    font-family: var(--font-headline);
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
}

.toc-links ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.toc-links li {
    font-size: 0.85rem;
}

.toc-level-2 {
    padding-left: 0;
}

.toc-level-3 {
    padding-left: 12px;
    border-left: 1px solid var(--border-color);
}

.toc-links a {
    color: var(--text-muted);
    transition: color 0.15s;
}

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

/* ── MARKDOWN FORMATTING (PROSE) ────────────────────────────────────────── */
.prose ul, .prose ol {
    margin-bottom: 1.5em;
    padding-left: 1.5em;
}

.prose li {
    margin-bottom: 0.5em;
}

.prose code {
    font-family: var(--font-mono);
    font-size: 0.85em;
    background-color: var(--tertiary-color);
    padding: 2px 4px;
    border-radius: var(--radius-sm);
    color: var(--primary-color);
}

.prose pre code {
    background-color: transparent;
    color: var(--code-text);
    padding: 0;
    border-radius: 0;
    font-size: 0.9rem;
}

/* Code block wrapper with copy button and header tab */
.codehilite {
    background-color: var(--code-bg);
    color: var(--code-text);
    border-radius: var(--radius-sm);
    border: var(--ghost-border);
    margin: 1.5em 0;
    position: relative;
    overflow: hidden;
}

.code-header-tab {
    background-color: var(--tertiary-color);
    border-bottom: var(--ghost-border);
    padding: 6px 12px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
}

.code-header-dots {
    display: flex;
    gap: 4px;
}

.code-header-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--border-color);
}

.code-header-dot:nth-child(1) { background-color: #ff5f56; }
.code-header-dot:nth-child(2) { background-color: #ffbd2e; }
.code-header-dot:nth-child(3) { background-color: #27c93f; }

.btn-copy {
    position: absolute;
    top: 36px;
    right: 8px;
    background-color: var(--tertiary-color);
    border: var(--ghost-border);
    color: var(--text-color);
    border-radius: var(--radius-sm);
    padding: 4px 8px;
    font-size: 0.75rem;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.2s, background-color 0.2s;
    font-family: var(--font-body);
}

.codehilite:hover .btn-copy {
    opacity: 0.85;
}

.btn-copy:hover {
    background-color: var(--primary-color);
    color: #fff;
    opacity: 1 !important;
}

.codehilite pre {
    padding: 16px;
    overflow-x: auto;
    margin: 0;
}

/* Callouts styling */
.prose blockquote {
    border-left: 4px solid var(--border-color);
    padding: 12px 16px;
    background-color: var(--tertiary-color);
    margin: 1.5em 0;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.prose blockquote p:last-child {
    margin-bottom: 0;
}

/* Github alert style callouts */
.callout {
    border-left: 4px solid var(--border-color);
    padding: 16px;
    margin: 1.5em 0;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

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

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

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

.callout-title {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.callout.info .callout-title { color: var(--info-border); }
.callout.warning .callout-title { color: var(--warn-border); }
.callout.success .callout-title { color: var(--success-border); }

/* Horizontal line */
hr {
    border: none;
    border-top: var(--ghost-border);
    margin: 2.5em 0;
}

/* Tables styling */
table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5em 0;
    font-size: 0.95rem;
}

th, td {
    padding: 10px 12px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

th {
    font-family: var(--font-headline);
    font-weight: 600;
    background-color: var(--tertiary-color);
}

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

/* ── SEARCH MODAL / COMMAND PALETTE ──────────────────────────────────────── */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(15, 15, 16, 0.7);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: 1000;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 100px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
}

.modal-overlay.open {
    opacity: 1;
    pointer-events: auto;
}

.modal-dialog {
    width: 100%;
    max-width: 600px;
    background-color: var(--panel-bg);
    border: var(--ghost-border);
    border-radius: var(--radius-lg);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 10px 10px -5px rgba(0, 0, 0, 0.4);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transform: translateY(-20px);
    transition: transform 0.2s ease;
}

.modal-overlay.open .modal-dialog {
    transform: translateY(0);
}

.modal-header {
    padding: 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: var(--ghost-border);
}

.modal-header input {
    flex-grow: 1;
    background: transparent;
    border: none;
    color: var(--text-color);
    font-family: var(--font-body);
    font-size: 1.1rem;
    outline: none;
}

.modal-close-btn {
    background-color: var(--tertiary-color);
    border: var(--ghost-border);
    color: var(--text-muted);
    border-radius: var(--radius-sm);
    padding: 2px 6px;
    font-size: 0.75rem;
    font-family: var(--font-mono);
    cursor: pointer;
}

.modal-body {
    max-height: 400px;
    overflow-y: auto;
    padding: 8px;
}

.search-results {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.search-status {
    padding: 24px;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.95rem;
}

.search-result-item {
    display: flex;
    flex-direction: column;
    padding: 12px;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background-color 0.15s;
    border: 1px solid transparent;
}

.search-result-item:hover,
.search-result-item.highlighted {
    background-color: var(--tertiary-color);
    border-color: var(--border-color);
}

.search-result-title {
    font-family: var(--font-headline);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 4px;
}

.search-result-snippets {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.search-result-snippet {
    font-size: 0.8rem;
    color: var(--text-muted);
    line-height: 1.4;
}

/* Snippet query matches markup styling */
.search-result-snippet mark,
.prose mark {
    background-color: var(--primary-color);
    color: #fff;
    padding: 1px 3px;
    border-radius: 2px;
}

.modal-footer {
    padding: 12px 16px;
    border-top: var(--ghost-border);
    background-color: var(--bg-color);
}

.search-help {
    display: flex;
    gap: 16px;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.search-help kbd {
    background-color: var(--panel-bg);
    border: var(--ghost-border);
    border-radius: var(--radius-sm);
    padding: 1px 3px;
    font-family: var(--font-mono);
}

/* ── RESPONSIVE STYLING ──────────────────────────────────────────────────── */
.mobile-only {
    display: none;
}

@media (max-width: 1024px) {
    .layout-wrapper {
        grid-template-columns: var(--sidebar-width) 1fr;
    }
    .sidebar-toc {
        display: none;
    }
}

@media (max-width: 768px) {
    .mobile-only {
        display: flex;
    }
    .layout-wrapper {
        grid-template-columns: 1fr;
        padding-top: var(--header-height);
    }
    .sidebar-nav {
        position: fixed;
        left: 0;
        top: var(--header-height);
        width: 100%;
        height: calc(100vh - var(--header-height));
        background-color: var(--bg-color);
        z-index: 90;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        padding: 0;
        border-right: none;
        display: flex;
        flex-direction: column;
        overflow: hidden;
    }
    .sidebar-nav.mobile-open {
        transform: translateX(0);
    }
    .content-body {
        padding: 24px 16px;
    }
}

/* Sidebar Footer & Version info styling */
.sidebar-footer {
    padding-top: 12px;
    padding-bottom: 16px;
    padding-left: var(--gutter);
    padding-right: var(--gutter);
    border-top: var(--ghost-border);
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-family: var(--font-mono);
    font-size: 0.62rem;
    color: var(--text-muted);
    background-color: var(--bg-color);
}

.version-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.version-label {
    opacity: 0.65;
    font-size: 0.58rem;
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

.version-val {
    font-weight: 500;
    font-size: 0.58rem;
    color: var(--text-color);
}