/* ============================================
   NoahOS Wiki — Layout & Styles
   3-Panel Wiki: Sidebar + Main + Reference
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Outfit:wght@300;400;500;600;700;800;900&family=JetBrains+Mono:wght@400;500;700&display=swap');

/* ── Variables ───────────────────────── */
:root {
    --mint: #a8edca;
    --cyan-glow: #00f5d4;
    --purple-iridescent: #b388ff;
    --pink-soft: #f8a4d0;
    --gold-sparkle: #ffd700;
    --bg-primary: #0a0e1a;
    --bg-secondary: #0d1225;
    --bg-glass: rgba(255, 255, 255, 0.06);
    --bg-card-hover: rgba(255, 255, 255, 0.08);
    --text-primary: #f0f0f5;
    --text-secondary: #a0a8c0;
    --text-muted: #6b7394;
    --border-glass: rgba(255, 255, 255, 0.1);
    --border-glow: rgba(0, 245, 212, 0.3);
    --font-display: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --sidebar-w: 280px;
    --ref-panel-w: 380px;
    --topbar-h: 56px;
    --transition: 250ms ease;
    --transition-spring: 400ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

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

body {
    font-family: var(--font-body);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
}

a {
    color: var(--cyan-glow);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--mint);
}

/* ── Starfield BG ────────────────────── */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    z-index: -2;
    background: radial-gradient(ellipse at 20% 50%, rgba(168, 237, 202, 0.05) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(179, 136, 255, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 80%, rgba(0, 245, 212, 0.04) 0%, transparent 50%);
}

body::after {
    content: '';
    position: fixed;
    inset: 0;
    z-index: -1;
    background-image:
        radial-gradient(1px 1px at 10% 20%, rgba(255, 255, 255, 0.4) 0%, transparent 100%),
        radial-gradient(1px 1px at 50% 10%, rgba(255, 255, 255, 0.5) 0%, transparent 100%),
        radial-gradient(1px 1px at 90% 70%, rgba(255, 255, 255, 0.4) 0%, transparent 100%),
        radial-gradient(1.5px 1.5px at 15% 80%, rgba(0, 245, 212, 0.3) 0%, transparent 100%),
        radial-gradient(1.5px 1.5px at 85% 30%, rgba(179, 136, 255, 0.3) 0%, transparent 100%);
    animation: twinkle 8s ease-in-out infinite alternate;
}

@keyframes twinkle {
    0% {
        opacity: .6
    }

    50% {
        opacity: 1
    }

    100% {
        opacity: .7
    }
}

/* ── Topbar ──────────────────────────── */
.topbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--topbar-h);
    background: rgba(10, 14, 26, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-glass);
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.25rem;
}

.topbar-left {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.topbar-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 1.15rem;
    color: var(--text-primary);
}

.topbar-logo .logo-icon {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--cyan-glow), var(--purple-iridescent));
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
}

.topbar-logo .accent {
    background: linear-gradient(135deg, var(--cyan-glow), var(--purple-iridescent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.sidebar-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.3rem;
    cursor: pointer;
    padding: 4px 8px;
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

/* Search */
.search-box {
    position: relative;
    width: 220px;
}

.search-box input {
    width: 100%;
    padding: 0.4rem 0.75rem 0.4rem 2rem;
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: 8px;
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.82rem;
    outline: none;
    transition: var(--transition);
}

.search-box input::placeholder {
    color: var(--text-muted);
}

.search-box input:focus {
    border-color: var(--border-glow);
    box-shadow: 0 0 12px rgba(0, 245, 212, 0.1);
}

.search-box .search-icon {
    position: absolute;
    left: 0.6rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.8rem;
    color: var(--text-muted);
    pointer-events: none;
}

/* Import Badge */
.import-badge {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.3rem 0.75rem;
    background: rgba(0, 245, 212, 0.08);
    border: 1px solid rgba(0, 245, 212, 0.2);
    border-radius: 100px;
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--cyan-glow);
    white-space: nowrap;
}

.import-badge .dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--cyan-glow);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
        transform: scale(1)
    }

    50% {
        opacity: .5;
        transform: scale(.8)
    }
}

/* ── Layout Shell ────────────────────── */
.wiki-layout {
    display: flex;
    margin-top: var(--topbar-h);
    min-height: calc(100vh - var(--topbar-h));
}

/* ── Sidebar ─────────────────────────── */
.sidebar {
    width: var(--sidebar-w);
    min-width: var(--sidebar-w);
    height: calc(100vh - var(--topbar-h));
    position: sticky;
    top: var(--topbar-h);
    overflow-y: auto;
    background: rgba(10, 14, 26, 0.6);
    border-right: 1px solid var(--border-glass);
    padding: 1rem 0;
    transition: var(--transition);
    scrollbar-width: thin;
    scrollbar-color: rgba(255, 255, 255, 0.1) transparent;
}

.sidebar::-webkit-scrollbar {
    width: 4px;
}

.sidebar::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}

.sidebar-home {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    margin: 0 0.5rem 0.75rem;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition);
}

.sidebar-home:hover {
    color: var(--cyan-glow);
    background: rgba(0, 245, 212, 0.06);
}

.sidebar-category {
    padding: 0.25rem 1rem;
    margin-top: 0.5rem;
}

.category-label {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--text-muted);
    padding: 0.4rem 0;
    cursor: pointer;
    user-select: none;
}

.category-label .chevron {
    font-size: 0.6rem;
    transition: transform 0.2s ease;
}

.category-label.collapsed .chevron {
    transform: rotate(-90deg);
}

.sidebar-links {
    list-style: none;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.sidebar-links.collapsed {
    max-height: 0 !important;
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.45rem 0.6rem;
    margin: 1px 0;
    border-radius: 6px;
    font-size: 0.83rem;
    color: var(--text-secondary);
    transition: var(--transition);
    cursor: pointer;
}

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

.sidebar-link.active {
    color: var(--cyan-glow);
    background: rgba(0, 245, 212, 0.08);
    font-weight: 600;
}

.sidebar-link .link-icon {
    font-size: 0.9rem;
    width: 22px;
    text-align: center;
    flex-shrink: 0;
}

.sidebar-link .link-check {
    margin-left: auto;
    font-size: 0.65rem;
    color: var(--cyan-glow);
    opacity: 0.6;
}

/* ── Main Content ────────────────────── */
.main-content {
    flex: 1;
    min-width: 0;
    padding: 2rem 3rem 4rem;
    transition: var(--transition);
}

.page-header {
    margin-bottom: 2rem;
}

.page-tag {
    display: inline-block;
    font-size: 0.68rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding: 3px 10px;
    border-radius: 4px;
    margin-bottom: 0.75rem;
}

.page-tag.core {
    background: rgba(0, 245, 212, 0.12);
    color: var(--cyan-glow);
}

.page-tag.agent {
    background: rgba(179, 136, 255, 0.12);
    color: var(--purple-iridescent);
}

.page-tag.security {
    background: rgba(248, 164, 208, 0.12);
    color: var(--pink-soft);
}

.page-tag.artifacts {
    background: rgba(168, 237, 202, 0.12);
    color: var(--mint);
}

.page-tag.integration {
    background: rgba(0, 245, 212, 0.12);
    color: var(--cyan-glow);
}

.page-title {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 0.5rem;
}

.page-title .icon {
    margin-right: 0.5rem;
}

.page-description {
    font-size: 1.05rem;
    color: var(--text-secondary);
    max-width: 65ch;
}

/* Doc Content Styles */
.doc-content {
    max-width: 750px;
}

.doc-content h2 {
    font-family: var(--font-display);
    font-size: 1.4rem;
    font-weight: 700;
    margin: 2rem 0 0.75rem;
    color: var(--text-primary);
}

.doc-content h3 {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 600;
    margin: 1.5rem 0 0.5rem;
    color: var(--text-primary);
}

.doc-content p {
    margin-bottom: 0.75rem;
    line-height: 1.8;
    color: var(--text-secondary);
}

.doc-content ul,
.doc-content ol {
    margin: 0.5rem 0 1rem 1.5rem;
    color: var(--text-secondary);
}

.doc-content li {
    margin-bottom: 0.35rem;
    line-height: 1.7;
}

.doc-content li::marker {
    color: var(--cyan-glow);
}

.doc-content code {
    background: rgba(0, 245, 212, 0.08);
    color: var(--cyan-glow);
    padding: 2px 7px;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.84em;
}

.doc-content .highlight-box {
    background: var(--bg-glass);
    border: 1px solid var(--border-glow);
    border-radius: 12px;
    padding: 1rem 1.25rem;
    margin: 1rem 0;
}

.doc-content .highlight-box h4 {
    color: var(--cyan-glow);
    margin-bottom: 0.35rem;
    font-size: 0.95rem;
    font-family: var(--font-display);
}

.doc-content .highlight-box p {
    margin-bottom: 0;
}

/* ── Reference Panel Toggle ──────────── */
.ref-toggle {
    position: fixed;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    z-index: 50;
    width: 36px;
    height: 90px;
    background: rgba(179, 136, 255, 0.15);
    border: 1px solid rgba(179, 136, 255, 0.3);
    border-right: none;
    border-radius: 10px 0 0 10px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    writing-mode: vertical-rl;
    font-size: 0.68rem;
    font-weight: 700;
    color: var(--purple-iridescent);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    transition: var(--transition);
}

.ref-toggle:hover {
    background: rgba(179, 136, 255, 0.25);
    width: 40px;
}

.ref-toggle.open {
    right: var(--ref-panel-w);
}

/* ── Reference Panel ─────────────────── */
.ref-panel {
    position: fixed;
    top: var(--topbar-h);
    right: calc(-1 * var(--ref-panel-w));
    bottom: 0;
    width: var(--ref-panel-w);
    background: rgba(13, 18, 37, 0.95);
    backdrop-filter: blur(20px);
    border-left: 1px solid rgba(179, 136, 255, 0.2);
    z-index: 40;
    transition: right 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    overflow-y: auto;
    padding: 0;
    scrollbar-width: thin;
    scrollbar-color: rgba(179, 136, 255, 0.15) transparent;
}

.ref-panel.open {
    right: 0;
}

.ref-panel::-webkit-scrollbar {
    width: 4px;
}

.ref-panel::-webkit-scrollbar-thumb {
    background: rgba(179, 136, 255, 0.15);
    border-radius: 4px;
}

.ref-panel-header {
    position: sticky;
    top: 0;
    padding: 1rem 1.25rem;
    background: rgba(13, 18, 37, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(179, 136, 255, 0.15);
    z-index: 2;
}

.ref-panel-header h3 {
    font-family: var(--font-display);
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--purple-iridescent);
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.ref-panel-header p {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.2rem;
}

.ref-panel-content {
    padding: 1.25rem;
}

.ref-panel-content h2 {
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 700;
    margin: 1.25rem 0 0.5rem;
    color: var(--text-primary);
}

.ref-panel-content h3 {
    font-family: var(--font-display);
    font-size: 0.95rem;
    font-weight: 600;
    margin: 1rem 0 0.35rem;
    color: var(--text-primary);
}

.ref-panel-content p {
    font-size: 0.88rem;
    margin-bottom: 0.5rem;
    line-height: 1.7;
    color: var(--text-secondary);
}

.ref-panel-content ul {
    margin: 0.35rem 0 0.75rem 1.25rem;
    color: var(--text-secondary);
    font-size: 0.88rem;
}

.ref-panel-content li {
    margin-bottom: 0.25rem;
    line-height: 1.6;
}

.ref-panel-content li::marker {
    color: var(--purple-iridescent);
}

.ref-panel-content code {
    background: rgba(179, 136, 255, 0.08);
    color: var(--purple-iridescent);
    padding: 1px 6px;
    border-radius: 3px;
    font-family: var(--font-mono);
    font-size: 0.82em;
}

/* ── Welcome State ───────────────────── */
.welcome-state {
    text-align: center;
    padding: 4rem 2rem;
}

.welcome-state .welcome-emoji {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
}

.welcome-state h2 {
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 800;
    margin-bottom: 0.75rem;
}

.welcome-state h2 .gradient {
    background: linear-gradient(135deg, var(--cyan-glow), var(--purple-iridescent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.welcome-state p {
    color: var(--text-secondary);
    max-width: 50ch;
    margin: 0 auto 2rem;
}

.welcome-state .quick-start {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 0.75rem;
    max-width: 600px;
    margin: 0 auto;
}

.quick-card {
    padding: 1rem;
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: 12px;
    text-align: left;
    cursor: pointer;
    transition: var(--transition);
    color: inherit;
    display: block;
}

.quick-card:hover {
    border-color: var(--border-glow);
    background: var(--bg-card-hover);
    transform: translateY(-2px);
    color: inherit;
}

.quick-card .qc-icon {
    font-size: 1.3rem;
    margin-bottom: 0.4rem;
}

.quick-card h4 {
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 0.2rem;
    color: var(--text-primary);
}

.quick-card p {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin: 0;
}

/* ── Prev/Next Nav ───────────────────── */
.page-nav {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    margin-top: 3rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-glass);
}

.page-nav a {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 0.75rem;
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: 8px;
    font-size: 0.82rem;
    color: var(--text-secondary);
    transition: var(--transition);
}

.page-nav a:hover {
    color: var(--cyan-glow);
    border-color: var(--border-glow);
}

/* ── Responsive ──────────────────────── */
@media (max-width: 900px) {
    .sidebar {
        position: fixed;
        left: calc(-1 * var(--sidebar-w));
        top: var(--topbar-h);
        z-index: 60;
        height: calc(100vh - var(--topbar-h));
        background: rgba(10, 14, 26, 0.98);
        transition: left 0.3s ease;
    }

    .sidebar.open {
        left: 0;
    }

    .sidebar-header-mobile {
        display: flex;
        justify-content: flex-end;
        padding: 0 1rem;
        margin-bottom: 0.5rem;
    }

    .close-sidebar {
        color: var(--text-secondary);
        font-size: 1.2rem;
        cursor: pointer;
        padding: 0.2rem 0.5rem;
    }

    .sidebar-toggle {
        display: block;
    }

    .main-content {
        padding: 1.5rem 1.25rem 3rem;
    }

    .search-box {
        width: 140px;
    }

    .ref-panel {
        width: 100%;
        right: -100%;
    }

    .ref-toggle.open {
        right: 100%;
    }
}

@media (max-width: 600px) {
    .search-box {
        display: none;
    }

    .page-title {
        font-size: 1.5rem;
    }

    .page-nav {
        flex-direction: column;
    }
}

/* ── Iframe Reference Panel ─────────── */
.ref-iframe-container {
    display: flex;
    flex-direction: column;
    height: calc(100vh - var(--topbar-h) - 80px);
}

.ref-iframe-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.5rem 0.75rem;
    background: rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid rgba(179, 136, 255, 0.15);
    font-size: 0.72rem;
    gap: 0.5rem;
}

.ref-url {
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 0.68rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.ref-open-btn {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(179, 136, 255, 0.12);
    border: 1px solid rgba(179, 136, 255, 0.25);
    border-radius: 6px;
    color: var(--purple-iridescent);
    font-size: 0.8rem;
    transition: var(--transition);
}

.ref-open-btn:hover {
    background: rgba(179, 136, 255, 0.25);
    color: var(--text-primary);
}

.ref-iframe {
    flex: 1;
    width: 100%;
    border: none;
    background: #fff;
    border-radius: 0;
}

/* ── New Page Tag Colors ────────────── */
.page-tag.editor {
    background: rgba(0, 245, 212, 0.12);
    color: var(--cyan-glow);
}

.page-tag.manager {
    background: rgba(179, 136, 255, 0.12);
    color: var(--purple-iridescent);
}

.page-tag.tools {
    background: rgba(168, 237, 202, 0.12);
    color: var(--mint);
}

.page-tag.browser {
    background: rgba(248, 164, 208, 0.12);
    color: var(--pink-soft);
}

.page-tag.misc {
    background: rgba(255, 215, 0, 0.12);
    color: var(--gold-sparkle);
}

/* ── Link New Badge ─────────────────── */
.sidebar-link .link-new {
    margin-left: auto;
    font-size: 0.55rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--purple-iridescent);
    opacity: 0.6;
    background: rgba(179, 136, 255, 0.1);
    padding: 1px 5px;
    border-radius: 3px;
}

/* ── Page Hero Image ────────────────── */
.page-hero-image {
    border-radius: 16px;
    overflow: hidden;
    margin-bottom: 1.5rem;
    border: 1px solid var(--border-glass);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3), 0 0 60px rgba(0, 245, 212, 0.06);
    position: relative;
}

.page-hero-image img {
    width: 100%;
    height: auto;
    display: block;
}

.page-hero-image::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 40%;
    background: linear-gradient(transparent, var(--bg-primary));
    pointer-events: none;
}

/* ── Stats Bar ──────────────────────── */
.stats-bar {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 2.5rem;
    padding: 1.25rem;
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: 16px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
}

.stat-number {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--cyan-glow), var(--purple-iridescent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
}