:root {
    --content-max-width: 960px;
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

#content {
    max-width: var(--content-max-width);
    margin: 0 auto;
    padding: 2rem 1.5rem 5rem;
    line-height: 1.65;
    font-size: 1.05rem;
    font-family: var(--font-family);
}

#content main h1 {
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 2rem;
    border-bottom: none;
    font-size: 2.8rem;
    background: linear-gradient(135deg, #0f766e, #0369a1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

#content main h2 {
    font-weight: 700;
    margin-top: 3.5rem;
    margin-bottom: 1.25rem;
    border-bottom: 1px solid var(--rhai-line);
    padding-bottom: 0.5rem;
}

#content main h3 {
    font-weight: 600;
    margin-top: 2.5rem;
}

.sidebar {
    background: var(--sidebar-bg, #f6f8fa);
    border-right: 1px solid var(--rhai-line);
}

.sidebar-scrollbox {
    padding: 1rem 0;
}

.sidebar .chapter {
    list-style: none;
    margin: 0;
    padding: 0;
}

.sidebar .chapter li {
    padding: 0.15rem 1rem;
}

.sidebar .chapter li a {
    display: block;
    padding: 0.5rem 0.75rem;
    border-radius: 8px;
    color: var(--fg);
    font-weight: 500;
    font-size: 0.94rem;
    text-decoration: none;
    transition: all 0.15s ease;
}

.sidebar .chapter li a:hover {
    background: color-mix(in srgb, var(--sidebar-bg, #f6f8fa) 92%, #0f766e 8%);
    color: #0f766e;
}

.sidebar .chapter li a.active {
    background: #0f766e;
    color: #ffffff;
    font-weight: 700;
    box-shadow: 0 4px 12px rgba(15, 118, 110, 0.2);
}

.rhai-diagram-shell {
    --rhai-surface: color-mix(in srgb, var(--bg, #ffffff) 92%, #f0f9ff 8%);
    --rhai-line: color-mix(in srgb, var(--searchbar-border-color, #d0d7de) 78%, #94a3b8 22%);
    --rhai-muted: color-mix(in srgb, var(--fg, #1f2328) 72%, #64748b 28%);
    --rhai-accent: #0f766e;
    --rhai-accent-soft: #d1fae5;
    border: 1px solid var(--rhai-line);
    border-radius: 18px;
    margin: 1rem 0 1.75rem;
    overflow: hidden;
    background:
        radial-gradient(circle at top left, rgba(14, 165, 233, 0.08), transparent 32%),
        linear-gradient(180deg, rgba(255, 255, 255, 0.04), transparent 60%),
        var(--rhai-surface);
    box-shadow: 0 18px 44px rgba(15, 23, 42, 0.08);
}

.rhai-diagram-toolbar {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: flex-start;
    padding: 0.9rem 1rem;
    border-bottom: 1px solid var(--rhai-line);
    background: linear-gradient(180deg, rgba(148, 163, 184, 0.08), rgba(148, 163, 184, 0.03));
}

.rhai-diagram-toolbar-left {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.rhai-diagram-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.rhai-diagram-button {
    border: 1px solid var(--rhai-line);
    border-radius: 999px;
    padding: 0.45rem 0.85rem;
    background: color-mix(in srgb, var(--sidebar-bg, #f6f8fa) 84%, #ffffff 16%);
    color: inherit;
    cursor: pointer;
    font-weight: 600;
}

.rhai-diagram-button:hover {
    transform: translateY(-1px);
    box-shadow: 0 8px 18px rgba(15, 23, 42, 0.08);
}

.rhai-diagram-status {
    font-size: 0.92rem;
    color: var(--rhai-muted);
}

.rhai-view-switch {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.rhai-view-label {
    font-size: 0.82rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--rhai-muted);
}

.rhai-view-slider {
    position: relative;
    display: inline-flex;
}

.rhai-view-input {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
    z-index: 2;
}

.rhai-view-track {
    position: relative;
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    min-width: 19rem;
    border-radius: 999px;
    border: 1px solid var(--rhai-line);
    background: rgba(255, 255, 255, 0.75);
    padding: 0.2rem;
}

.rhai-view-thumb {
    position: absolute;
    top: 0.2rem;
    left: 0.2rem;
    width: calc(50% - 0.2rem);
    bottom: 0.2rem;
    border-radius: 999px;
    background: linear-gradient(135deg, #0f766e, #0284c7);
    box-shadow: 0 8px 24px rgba(14, 116, 144, 0.28);
    transition: transform 180ms ease;
}

.rhai-view-input:checked + .rhai-view-track .rhai-view-thumb {
    transform: translateX(100%);
}

.rhai-view-option {
    position: relative;
    z-index: 1;
    padding: 0.45rem 0.85rem;
    text-align: center;
    font-size: 0.85rem;
    font-weight: 700;
    color: #475569;
}

.rhai-view-option.is-active {
    color: #f8fafc;
}

.rhai-diagram-body {
    display: grid;
    grid-template-columns: minmax(19rem, 0.95fr) minmax(20rem, 1.05fr);
}

.rhai-diagram-editor {
    min-height: 20rem;
    padding: 1rem;
    border: 0;
    border-right: 1px solid var(--rhai-line);
    resize: vertical;
    font: 0.92rem/1.6 var(--code-font-family, monospace);
    background:
        linear-gradient(180deg, rgba(15, 23, 42, 0.02), transparent 48%),
        transparent;
    color: inherit;
}

.rhai-diagram-preview {
    padding: 1rem;
    overflow: auto;
    background:
        radial-gradient(circle at top right, rgba(59, 130, 246, 0.08), transparent 28%),
        linear-gradient(180deg, rgba(248, 250, 252, 0.6), transparent 50%);
}

.rhai-diagram-preview svg {
    max-width: 100%;
    height: auto;
}

.rhai-diagram-error {
    color: #b42318;
    font-weight: 700;
}

.rhai-diagram-note {
    font-size: 0.88rem;
    color: var(--rhai-muted);
    padding: 0.8rem 1rem 1rem;
}

.rhai-model-chat {
    border-top: 1px solid var(--rhai-line);
    padding: 0.9rem 1rem 1rem;
    display: grid;
    gap: 0.65rem;
    background: color-mix(in srgb, var(--rhai-surface) 88%, #ffffff 12%);
}

.rhai-model-chat-title {
    font-weight: 700;
    color: inherit;
}

.rhai-model-chat-input {
    min-height: 4.75rem;
    resize: vertical;
    border: 1px solid var(--rhai-line);
    border-radius: 8px;
    padding: 0.7rem;
    font: 0.92rem/1.45 var(--font-family, system-ui);
    color: inherit;
    background: color-mix(in srgb, var(--bg, #ffffff) 94%, #ecfeff 6%);
}

.rhai-model-chat-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.rhai-model-chat-output {
    margin: 0;
    max-height: 18rem;
    overflow: auto;
    border: 1px solid var(--rhai-line);
    border-radius: 8px;
    padding: 0.75rem;
    white-space: pre-wrap;
    background: color-mix(in srgb, var(--bg, #ffffff) 90%, #f1f5f9 10%);
}

.rhai-diag-panel {
    margin-top: 0.85rem;
    border-top: 1px solid var(--rhai-line);
    padding-top: 0.7rem;
}

.rhai-diag-title {
    font-weight: 700;
    margin-bottom: 0.45rem;
}

.rhai-diag-panel ul {
    margin: 0;
    padding-left: 1.2rem;
}

.rhai-diag-panel li {
    margin-bottom: 0.42rem;
}

.rhai-diag-error {
    color: #b42318;
}

.rhai-diag-warning {
    color: #b54708;
}

.rhai-diag-info {
    color: #344054;
}

.rhai-diag-hint {
    font-size: 0.88rem;
    color: var(--rhai-muted);
}

.rhai-diagram-failure {
    border: 1px solid rgba(180, 35, 24, 0.16);
    border-radius: 14px;
    padding: 0.9rem 1rem;
    background: rgba(254, 242, 242, 0.7);
}

.rhai-diagram-original {
    display: none;
}

.rhai-isometric-scene {
    display: block;
    width: 100%;
    min-height: 18rem;
}

.rhai-iso-bg {
    opacity: 0.95;
}

#content main table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin: 2rem 0;
    border: 1px solid var(--rhai-line);
    border-radius: 12px;
    overflow: hidden;
}

#content main table th {
    background: color-mix(in srgb, var(--sidebar-bg, #f6f8fa) 95%, #0f766e 5%);
    font-weight: 700;
    text-align: left;
    padding: 0.85rem 1rem;
    border-bottom: 1px solid var(--rhai-line);
}

#content main table td {
    padding: 0.85rem 1rem;
    border-bottom: 1px solid var(--rhai-line);
    vertical-align: top;
}

#content main table tr:last-child td {
    border-bottom: none;
}

#content main table tr:hover td {
    background: color-mix(in srgb, var(--bg, #ffffff) 98%, #0f766e 2%);
}

#content main pre code {
    background: transparent;
    padding: 0;
    border-radius: 0;
    font-size: inherit;
}

#content main :not(pre) > code {
    background: color-mix(in srgb, var(--bg, #ffffff) 95%, #64748b 5%);
    padding: 0.2rem 0.4rem;
    border-radius: 6px;
    font-size: 0.9em;
}

#content main pre {
    border-radius: 12px;
    padding: 1.25rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--rhai-line);
}

.rhai-iso-shadow-plane path {
    fill: rgba(15, 23, 42, 0.06);
}

.rhai-iso-edge path {
    fill: none;
    stroke: rgba(51, 65, 85, 0.9);
    stroke-width: 2.2;
    stroke-linecap: round;
}

.rhai-iso-edge-label rect {
    fill: rgba(248, 250, 252, 0.95);
    stroke: rgba(148, 163, 184, 0.75);
}

.rhai-iso-edge-label text {
    fill: #334155;
    font-size: 11px;
    font-weight: 700;
    text-anchor: middle;
    dominant-baseline: middle;
}

.rhai-iso-node {
    filter: drop-shadow(0 10px 18px rgba(15, 23, 42, 0.14));
}

.rhai-iso-node:hover {
    filter: drop-shadow(0 18px 30px rgba(15, 23, 42, 0.2));
}

.rhai-iso-label {
    fill: #0f172a;
    font-size: 13px;
    font-weight: 700;
    text-rendering: geometricPrecision;
    paint-order: stroke;
    stroke: #ffffff;
    stroke-width: 3px;
    stroke-linejoin: round;
}

.rhai-iso-label-center {
    text-anchor: middle;
}

.rhai-iso-subtitle {
    fill: #475569;
    font-size: 10.5px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    paint-order: stroke;
    stroke: #ffffff;
    stroke-width: 2.5px;
    stroke-linejoin: round;
}

@media (max-width: 1000px) {
    .rhai-diagram-toolbar {
        flex-direction: column;
        align-items: stretch;
    }

    .rhai-view-track {
        min-width: 100%;
    }

    .rhai-diagram-body {
        grid-template-columns: 1fr;
    }

    .rhai-diagram-editor {
        border-right: 0;
        border-bottom: 1px solid var(--rhai-line);
    }
}

@media (max-width: 720px) {
    .rhai-view-switch {
        flex-direction: column;
        align-items: flex-start;
    }

    .rhai-view-track {
        min-width: 15.5rem;
    }
}