/* ============================================================
   BoxLang AI Explorer — Custom Styles
   Brand: #00BF63 Ortus Green | #00FF87 Neon Accent
   ============================================================ */

/* ── CSS Custom Properties ── */
:root {
    --bxl-green:         #00BF63;
    --bxl-green-neon:    #00FF87;
    --bxl-green-dark:    #009B50;
    --bxl-cyan:          #00D9E8;
    --bxl-purple:        #7C3AED;

    /* Dark theme (default) */
    --bxl-bg-primary:    #070A14;
    --bxl-bg-secondary:  #0C1220;
    --bxl-bg-card:       #111827;
    --bxl-bg-elevated:   #182033;
    --bxl-bg-code:       #060910;
    --bxl-text:          #E2E8F0;
    --bxl-text-muted:    #8892A4;
    --bxl-text-dim:      #4B5A72;
    --bxl-border:        rgba(0, 191, 99, 0.15);
    --bxl-border-strong: rgba(0, 191, 99, 0.35);
    --bxl-glow-sm:       0 0 12px rgba(0, 255, 135, 0.12);
    --bxl-glow-md:       0 0 24px rgba(0, 255, 135, 0.18);
    --bxl-glow-lg:       0 0 40px rgba(0, 255, 135, 0.25);
    --bxl-sidebar-width: 288px;
    --bxl-topbar-height: 60px;
}

[data-bs-theme="light"] {
    --bxl-bg-primary:    #F0F4F8;
    --bxl-bg-secondary:  #FFFFFF;
    --bxl-bg-card:       #FFFFFF;
    --bxl-bg-elevated:   #F8FAFC;
    --bxl-bg-code:       #1A2235;
    --bxl-text:          #0F172A;
    --bxl-text-muted:    #475569;
    --bxl-text-dim:      #94A3B8;
    --bxl-border:        rgba(0, 122, 61, 0.18);
    --bxl-border-strong: rgba(0, 122, 61, 0.4);
    --bxl-glow-sm:       none;
    --bxl-glow-md:       none;
    --bxl-glow-lg:       none;
    --bxl-green:         #007A3D;
    --bxl-green-neon:    #00A855;
    --bxl-green-dark:    #005C2E;
}

/* ── Base ── */
*, *::before, *::after { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--bxl-bg-primary);
    color: var(--bxl-text);
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    font-size: 14px;
    line-height: 1.6;
    overflow: hidden;
}

/* ── Layout ── */
.bxl-app {
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
}

/* ── Top Navbar ── */
.bxl-topbar {
    height: var(--bxl-topbar-height);
    min-height: var(--bxl-topbar-height);
    background: var(--bxl-bg-secondary);
    border-bottom: 1px solid var(--bxl-border);
    display: flex;
    align-items: center;
    padding: 0 1rem;
    gap: 1rem;
    z-index: 100;
    box-shadow: 0 1px 0 var(--bxl-border);
}

.bxl-logo-wrap { display: flex; align-items: center; gap: 0.5rem; flex-shrink: 0; }
.bxl-logo-img  { height: 32px; width: auto; display: block; }
.bxl-logo-text {
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--bxl-text-muted);
}

.bxl-search-wrap {
    flex: 1;
    max-width: 420px;
    position: relative;
}
.bxl-search-wrap .ph {
    position: absolute;
    left: 10px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--bxl-text-muted);
    font-size: 16px;
    pointer-events: none;
}
.bxl-search {
    width: 100%;
    background: var(--bxl-bg-elevated);
    border: 1px solid var(--bxl-border);
    border-radius: 8px;
    padding: 0.45rem 1rem 0.45rem 2.2rem;
    color: var(--bxl-text);
    font-size: 0.875rem;
    transition: border-color 0.2s, box-shadow 0.2s;
    outline: none;
}
.bxl-search::placeholder { color: var(--bxl-text-muted); }
.bxl-search:focus {
    border-color: var(--bxl-green);
    box-shadow: var(--bxl-glow-sm);
}

.bxl-controls { margin-left: auto; display: flex; align-items: center; gap: 0.5rem; }

.btn-icon {
    background: transparent;
    border: 1px solid var(--bxl-border);
    color: var(--bxl-text-muted);
    width: 36px;
    height: 36px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 18px;
}
.btn-icon:hover {
    border-color: var(--bxl-green);
    color: var(--bxl-green);
    background: rgba(0, 191, 99, 0.08);
}

.bxl-layout {
    display: flex;
    height: calc(100vh - var(--bxl-topbar-height));
    overflow: hidden;
}

/* ── Sidebar ── */
.bxl-sidebar {
    width: var(--bxl-sidebar-width);
    min-width: var(--bxl-sidebar-width);
    background: var(--bxl-bg-secondary);
    border-right: 1px solid var(--bxl-border);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: width 0.25s ease, min-width 0.25s ease;
}
.bxl-sidebar.collapsed { width: 0; min-width: 0; }

.sidebar-scroll {
    flex: 1;
    overflow-y: auto;
    padding: 0.75rem 0;
    scrollbar-width: thin;
    scrollbar-color: var(--bxl-border) transparent;
}
.sidebar-scroll::-webkit-scrollbar { width: 4px; }
.sidebar-scroll::-webkit-scrollbar-thumb { background: var(--bxl-border); border-radius: 2px; }

/* Sidebar filter by difficulty */
.sidebar-filters {
    padding: 0.5rem 0.75rem;
    display: flex;
    gap: 0.35rem;
    flex-wrap: wrap;
    border-bottom: 1px solid var(--bxl-border);
}
.filter-pill {
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    padding: 0.2rem 0.6rem;
    border-radius: 20px;
    border: 1px solid var(--bxl-border);
    background: transparent;
    color: var(--bxl-text-muted);
    cursor: pointer;
    transition: all 0.15s;
}
.filter-pill:hover, .filter-pill.active {
    border-color: var(--bxl-green);
    color: var(--bxl-green);
    background: rgba(0, 191, 99, 0.08);
}

/* Category group */
.cat-group { margin-bottom: 0.25rem; }
.cat-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--bxl-green);
    cursor: pointer;
    user-select: none;
    border-top: 1px solid var(--bxl-border);
    margin-top: 0.25rem;
}
.cat-header:first-child { border-top: none; margin-top: 0; }
.cat-count {
    margin-left: auto;
    background: rgba(0, 191, 99, 0.12);
    color: var(--bxl-green);
    font-size: 0.65rem;
    font-weight: 700;
    padding: 0.1rem 0.4rem;
    border-radius: 10px;
}
.cat-chevron { color: var(--bxl-text-dim); font-size: 14px; transition: transform 0.2s; }
.cat-chevron.open { transform: rotate(90deg); }

/* Sample list item */
.sample-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 1rem 0.4rem 1.25rem;
    cursor: pointer;
    border-radius: 0;
    transition: background 0.15s;
    border-left: 2px solid transparent;
    position: relative;
}
.sample-item:hover { background: rgba(0, 191, 99, 0.06); }
.sample-item.active {
    background: rgba(0, 191, 99, 0.1);
    border-left-color: var(--bxl-green);
}
.sample-item.active .sample-item-title { color: var(--bxl-green-neon); }

.diff-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    flex-shrink: 0;
}
.diff-dot.beginner     { background: #22C55E; }
.diff-dot.intermediate { background: #EAB308; }
.diff-dot.advanced     { background: #F97316; }
.diff-dot.expert       { background: #A855F7; }

.sample-item-title {
    font-size: 0.8rem;
    color: var(--bxl-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    flex: 1;
}

/* ── Main Content ── */
.bxl-main {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    background: var(--bxl-bg-primary);
}

/* ── Welcome Screen ── */
.welcome-screen {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem 2rem;
    text-align: center;
}

.welcome-hero {
    margin-bottom: 3rem;
}
.welcome-logo {
    height: 72px;
    width: auto;
    margin-bottom: 1.5rem;
    filter: drop-shadow(0 0 20px rgba(0, 191, 99, 0.4));
}
.welcome-title {
    font-size: 2.25rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--bxl-green-neon) 0%, var(--bxl-green) 50%, var(--bxl-cyan) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.75rem;
}
.welcome-subtitle {
    font-size: 1.1rem;
    color: var(--bxl-text-muted);
    max-width: 520px;
    margin: 0 auto 2rem;
}
.welcome-stats {
    display: flex;
    gap: 2rem;
    justify-content: center;
    margin-bottom: 2rem;
}
.stat-item { text-align: center; }
.stat-num {
    font-size: 2rem;
    font-weight: 800;
    color: var(--bxl-green);
    line-height: 1;
}
.stat-label {
    font-size: 0.75rem;
    color: var(--bxl-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-top: 0.25rem;
}

.welcome-actions {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.75rem;
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
}
.welcome-action {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    min-height: 68px;
    padding: 0.85rem 1rem;
    border: 1px solid var(--bxl-border);
    border-radius: 10px;
    background: var(--bxl-bg-card);
    color: var(--bxl-text);
    font: inherit;
    text-align: left;
    cursor: pointer;
    appearance: none;
    transition: border-color 0.2s, background 0.2s, transform 0.2s;
}
.welcome-action:hover,
.welcome-action:focus-visible {
    border-color: var(--bxl-green);
    background: var(--bxl-bg-elevated);
    transform: translateY(-2px);
    outline: none;
}
.welcome-action-primary {
    border-color: var(--bxl-border-strong);
    background: rgba(0, 191, 99, 0.1);
}
.welcome-action > i {
    flex: 0 0 auto;
    color: var(--bxl-green);
    font-size: 25px;
}
.welcome-action span {
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
}
.welcome-action strong {
    font-size: 0.82rem;
    font-weight: 700;
}
.welcome-action small {
    color: var(--bxl-text-muted);
    font-size: 0.72rem;
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
    width: 100%;
    max-width: 900px;
}
.cat-card {
    background: var(--bxl-bg-card);
    border: 1px solid var(--bxl-border);
    border-radius: 12px;
    padding: 1.25rem;
    cursor: pointer;
    transition: all 0.2s;
    text-align: left;
}
.cat-card:hover {
    border-color: var(--bxl-green);
    background: var(--bxl-bg-elevated);
    box-shadow: var(--bxl-glow-sm);
    transform: translateY(-2px);
}
.cat-card-icon {
    font-size: 28px;
    color: var(--bxl-green);
    margin-bottom: 0.75rem;
    display: block;
}
.cat-card-name {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--bxl-text);
    margin-bottom: 0.25rem;
}
.cat-card-count {
    font-size: 0.75rem;
    color: var(--bxl-text-muted);
}

.explorer-repo-link {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    margin-top: 1.25rem;
    color: var(--bxl-text-muted);
    font-size: 0.8rem;
    text-decoration: none;
    transition: color 0.2s;
}
.explorer-repo-link:hover,
.explorer-repo-link:focus-visible {
    color: var(--bxl-green-neon);
    outline: none;
}
.explorer-repo-link i:first-child { color: var(--bxl-green); font-size: 16px; }
.explorer-repo-link i:last-child { font-size: 13px; }

/* Difficulty legend */
.diff-legend {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    margin-top: 2rem;
    flex-wrap: wrap;
}
.diff-legend-item { display: flex; align-items: center; gap: 0.4rem; font-size: 0.75rem; color: var(--bxl-text-muted); }

/* ── Sample Detail ── */
.sample-detail {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.sample-topbar {
    padding: 0.75rem 1.5rem;
    border-bottom: 1px solid var(--bxl-border);
    background: var(--bxl-bg-secondary);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-shrink: 0;
}
.breadcrumb-item {
    font-size: 0.8rem;
    color: var(--bxl-text-muted);
}
.breadcrumb-item a { color: var(--bxl-green); text-decoration: none; }
.breadcrumb-sep { color: var(--bxl-text-dim); }
.sample-topbar-actions { margin-left: auto; display: flex; gap: 0.5rem; align-items: center; }

.sample-header {
    padding: 1.5rem 1.5rem 1rem;
    background: var(--bxl-bg-secondary);
    border-bottom: 1px solid var(--bxl-border);
    flex-shrink: 0;
}
.sample-title {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--bxl-text);
    margin: 0 0 0.75rem;
    letter-spacing: -0.01em;
}
.sample-badges { display: flex; gap: 0.5rem; flex-wrap: wrap; align-items: center; }

.badge-diff {
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    padding: 0.25rem 0.65rem;
    border-radius: 20px;
}
.badge-diff.beginner     { background: rgba(34, 197, 94, 0.15);  color: #22C55E; border: 1px solid rgba(34, 197, 94, 0.3); }
.badge-diff.intermediate { background: rgba(234, 179, 8, 0.15);  color: #EAB308; border: 1px solid rgba(234, 179, 8, 0.3); }
.badge-diff.advanced     { background: rgba(249, 115, 22, 0.15); color: #F97316; border: 1px solid rgba(249, 115, 22, 0.3); }
.badge-diff.expert       { background: rgba(168, 85, 247, 0.15); color: #A855F7; border: 1px solid rgba(168, 85, 247, 0.3); }

.badge-provider {
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    padding: 0.25rem 0.65rem;
    border-radius: 20px;
    background: rgba(0, 191, 99, 0.1);
    color: var(--bxl-green);
    border: 1px solid var(--bxl-border-strong);
}

/* Guidance card */
.guidance-card {
    margin: 1rem 1.5rem;
    background: var(--bxl-bg-elevated);
    border: 1px solid var(--bxl-border);
    border-left: 3px solid var(--bxl-green);
    border-radius: 0 10px 10px 0;
    padding: 1rem 1.25rem;
    flex-shrink: 0;
}
.guidance-label {
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--bxl-green);
    display: flex;
    align-items: center;
    gap: 0.4rem;
    margin-bottom: 0.5rem;
}
.guidance-text {
    font-size: 0.875rem;
    color: var(--bxl-text-muted);
    line-height: 1.7;
    white-space: pre-wrap;
}

/* Side-by-side panels */
.sample-panels {
    display: grid;
    grid-template-columns: 55fr 45fr;
    gap: 1rem;
    padding: 0 1rem 0.75rem;
    flex: 1;
    overflow: hidden;
    min-height: 0;
}

.panel {
    display: flex;
    flex-direction: column;
    border: 1px solid var(--bxl-border);
    border-radius: 10px;
    overflow: hidden;
    min-height: 0;
}

.panel-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 0.85rem;
    background: var(--bxl-bg-elevated);
    border-bottom: 1px solid var(--bxl-border);
    flex-shrink: 0;
}
.panel-title {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--bxl-text-muted);
    flex: 1;
}
.panel-lang-tag {
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    padding: 0.15rem 0.5rem;
    border-radius: 4px;
    background: rgba(0, 191, 99, 0.1);
    color: var(--bxl-green);
    border: 1px solid rgba(0, 191, 99, 0.2);
}

/* Copy button */
.btn-copy {
    background: transparent;
    border: 1px solid var(--bxl-border);
    color: var(--bxl-text-muted);
    font-size: 0.7rem;
    font-weight: 600;
    padding: 0.2rem 0.55rem;
    border-radius: 5px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.3rem;
    transition: all 0.15s;
    white-space: nowrap;
}
.btn-copy:hover { border-color: var(--bxl-green); color: var(--bxl-green); }
.btn-copy.copied { border-color: var(--bxl-green-neon); color: var(--bxl-green-neon); }

/* Code panel */
.code-scroll {
    flex: 1;
    overflow: auto;
    background: var(--bxl-bg-code);
}
.code-scroll pre {
    margin: 0;
    padding: 1rem;
    background: transparent !important;
    font-size: 0.8rem;
    line-height: 1.65;
}
.code-scroll code {
    font-family: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace !important;
    font-size: inherit !important;
}
/* Ensure hljs theme doesn't fight our background */
.hljs { background: transparent !important; }

/* Output panel */
.output-panel .panel-header { background: #050810; border-bottom-color: rgba(0, 255, 135, 0.12); }
.output-dots { display: flex; gap: 5px; margin-right: 0.25rem; }
.output-dots span { width: 10px; height: 10px; border-radius: 50%; }
.output-dots .dot-red    { background: #FF5F57; }
.output-dots .dot-yellow { background: #FEBC2E; }
.output-dots .dot-green  { background: #28C840; }

.output-scroll {
    flex: 1;
    overflow: auto;
    background: #050810;
    padding: 1rem;
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 0.8rem;
    line-height: 1.7;
    color: var(--bxl-green-neon);
    white-space: pre-wrap;
    word-break: break-word;
}

/* Blinking cursor */
.cursor {
    display: inline-block;
    width: 8px;
    height: 1em;
    background: var(--bxl-green-neon);
    margin-left: 2px;
    vertical-align: text-bottom;
    animation: blink 1s step-end infinite;
}
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }

/* Prev/Next nav */
.sample-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.6rem 1rem;
    border-top: 1px solid var(--bxl-border);
    background: var(--bxl-bg-secondary);
    flex-shrink: 0;
}
.btn-nav {
    background: transparent;
    border: 1px solid var(--bxl-border);
    color: var(--bxl-text-muted);
    font-size: 0.8rem;
    font-weight: 600;
    padding: 0.4rem 0.85rem;
    border-radius: 7px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    transition: all 0.15s;
}
.btn-nav:hover:not(:disabled) {
    border-color: var(--bxl-green);
    color: var(--bxl-green);
    background: rgba(0, 191, 99, 0.08);
}
.btn-nav:disabled { opacity: 0.3; cursor: not-allowed; }

.sample-nav-info { font-size: 0.75rem; color: var(--bxl-text-muted); text-align: center; }

/* ── Docs button ── */
.btn-docs {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--bxl-green);
    border: 1px solid var(--bxl-border-strong);
    background: rgba(0, 191, 99, 0.06);
    padding: 0.35rem 0.75rem;
    border-radius: 7px;
    text-decoration: none;
    transition: all 0.15s;
}
.btn-docs:hover {
    background: rgba(0, 191, 99, 0.14);
    color: var(--bxl-green-neon);
    box-shadow: var(--bxl-glow-sm);
}

/* ── Scrollbar ── */
.bxl-main::-webkit-scrollbar { width: 6px; }
.bxl-main::-webkit-scrollbar-thumb { background: var(--bxl-border); border-radius: 3px; }

/* ── Mobile ── */
@media (max-width: 768px) {
    .bxl-sidebar {
        position: fixed;
        top: var(--bxl-topbar-height);
        left: 0;
        bottom: 0;
        z-index: 50;
        transform: translateX(0);
        transition: transform 0.25s ease;
        box-shadow: 4px 0 20px rgba(0, 0, 0, 0.4);
    }
    .bxl-sidebar.collapsed { transform: translateX(-100%); width: var(--bxl-sidebar-width); min-width: var(--bxl-sidebar-width); }
    .sample-panels { grid-template-columns: 1fr; overflow: visible; }
    .panel { min-height: 300px; }
    .welcome-title { font-size: 1.5rem; }
    .welcome-actions { grid-template-columns: 1fr; max-width: 420px; }
    .category-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
    .bxl-search-wrap { max-width: 200px; }
}

/* ── Light mode output panel ── */
[data-bs-theme="light"] .output-panel .panel-header { background: #1A2235; }
[data-bs-theme="light"] .output-scroll { background: #0D1421; }

/* ── Highlight.js overrides ── */
.hljs-comment, .hljs-quote { color: #5C7090 !important; font-style: italic; }
.hljs-keyword { color: #569CD6 !important; }
.hljs-string  { color: #CE9178 !important; }
.hljs-number  { color: #B5CEA8 !important; }
.hljs-built_in, .hljs-title.function_ { color: var(--bxl-green) !important; }
.hljs-variable, .hljs-attr { color: #9CDCFE !important; }
.hljs-literal { color: #4FC1FF !important; }
.hljs-template-variable { color: #F97316 !important; }

/* ── Neon gradient divider ── */
.neon-divider {
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--bxl-green) 30%, var(--bxl-green-neon) 50%, var(--bxl-green) 70%, transparent);
    margin: 0;
    opacity: 0.6;
}