/**
 * ArchetypeHub (archetypehub.net) — Design System & Stylesheet
 * Implements modern color-scheme, light-dark() with @media (prefers-color-scheme: dark) fallbacks,
 * native <dialog> backdrop styling, Git-style side-by-side/unified line diff viewer, and citation badges.
 */

:root {
    /* Raw Light Palette */
    --bg-canvas-light: #f4f6fb;
    --bg-surface-light: #ffffff;
    --bg-elevated-light: #eef2f9;
    --text-primary-light: #0f172a;
    --text-secondary-light: #475569;
    --text-muted-light: #64748b;
    --border-color-light: #dbe2ef;
    --brand-primary-light: #4f46e5;
    --brand-hover-light: #4338ca;
    --accent-teal-light: #0d9488;

    /* Raw Dark Palette */
    --bg-canvas-dark: #090d16;
    --bg-surface-dark: #111827;
    --bg-elevated-dark: #1e293b;
    --text-primary-dark: #f8fafc;
    --text-secondary-dark: #cbd5e1;
    --text-muted-dark: #94a3b8;
    --border-color-dark: #26334d;
    --brand-primary-dark: #6366f1;
    --brand-hover-dark: #818cf8;
    --accent-teal-dark: #2dd4bf;

    /* Default (Light) fallback assignment */
    --bg-canvas: var(--bg-canvas-light);
    --bg-surface: var(--bg-surface-light);
    --bg-elevated: var(--bg-elevated-light);
    --text-primary: var(--text-primary-light);
    --text-secondary: var(--text-secondary-light);
    --text-muted: var(--text-muted-light);
    --border-color: var(--border-color-light);
    --brand-primary: var(--brand-primary-light);
    --brand-hover: var(--brand-hover-light);
    --accent-teal: var(--accent-teal-light);

    /* MANDATORY fallback for browsers without light-dark() support */
    @media (prefers-color-scheme: dark) {
        --bg-canvas: var(--bg-canvas-dark);
        --bg-surface: var(--bg-surface-dark);
        --bg-elevated: var(--bg-elevated-dark);
        --text-primary: var(--text-primary-dark);
        --text-secondary: var(--text-secondary-dark);
        --text-muted: var(--text-muted-dark);
        --border-color: var(--border-color-dark);
        --brand-primary: var(--brand-primary-dark);
        --brand-hover: var(--brand-hover-dark);
        --accent-teal: var(--accent-teal-dark);
    }

    /* Progressive enhancement with light-dark() */
    @supports (color: light-dark(white, black)) {
        --bg-canvas: light-dark(var(--bg-canvas-light), var(--bg-canvas-dark));
        --bg-surface: light-dark(var(--bg-surface-light), var(--bg-surface-dark));
        --bg-elevated: light-dark(var(--bg-elevated-light), var(--bg-elevated-dark));
        --text-primary: light-dark(var(--text-primary-light), var(--text-primary-dark));
        --text-secondary: light-dark(var(--text-secondary-light), var(--text-secondary-dark));
        --text-muted: light-dark(var(--text-muted-light), var(--text-muted-dark));
        --border-color: light-dark(var(--border-color-light), var(--border-color-dark));
        --brand-primary: light-dark(var(--brand-primary-light), var(--brand-primary-dark));
        --brand-hover: light-dark(var(--brand-hover-light), var(--brand-hover-dark));
        --accent-teal: light-dark(var(--accent-teal-light), var(--accent-teal-dark));
    }

    /* MANDATORY per modern-web-guidance: apply color-scheme to :root */
    color-scheme: light dark;
    accent-color: var(--brand-primary);
}

html.theme-dark {
    color-scheme: dark;
    --bg-canvas: var(--bg-canvas-dark);
    --bg-surface: var(--bg-surface-dark);
    --bg-elevated: var(--bg-elevated-dark);
    --text-primary: var(--text-primary-dark);
    --text-secondary: var(--text-secondary-dark);
    --text-muted: var(--text-muted-dark);
    --border-color: var(--border-color-dark);
    --brand-primary: var(--brand-primary-dark);
    --brand-hover: var(--brand-hover-dark);
    --accent-teal: var(--accent-teal-dark);
}

html.theme-light {
    color-scheme: light;
    --bg-canvas: var(--bg-canvas-light);
    --bg-surface: var(--bg-surface-light);
    --bg-elevated: var(--bg-elevated-light);
    --text-primary: var(--text-primary-light);
    --text-secondary: var(--text-secondary-light);
    --text-muted: var(--text-muted-light);
    --border-color: var(--border-color-light);
    --brand-primary: var(--brand-primary-light);
    --brand-hover: var(--brand-hover-light);
    --accent-teal: var(--accent-teal-light);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Inter, sans-serif;
    background-color: var(--bg-canvas);
    color: var(--text-primary);
    line-height: 1.5;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.ah-sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

/* Top Navigation Bar */
.ah-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.75rem 1.25rem;
    background-color: var(--bg-surface);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 30;
    flex-wrap: wrap;
}

.ah-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.ah-logo-badge {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 0.65rem;
    background: linear-gradient(135deg, #4f46e5, #0d9488);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.35rem;
    color: #fff;
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.25);
}

.ah-brand-title-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.ah-brand-title {
    margin: 0;
    font-size: 1.15rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.ah-domain-pill {
    font-size: 0.72rem;
    font-weight: 600;
    padding: 0.12rem 0.5rem;
    border-radius: 999px;
    background-color: var(--bg-elevated);
    color: var(--accent-teal);
    border: 1px solid var(--border-color);
}

.ah-brand-subtitle {
    margin: 0;
    font-size: 0.76rem;
    color: var(--text-muted);
}

.ah-topbar-controls {
    display: flex;
    align-items: center;
    gap: 0.55rem;
    flex-wrap: wrap;
}

/* Main 2-Column Layout */
.ah-layout {
    display: grid;
    grid-template-columns: 330px 1fr;
    flex: 1;
    min-height: calc(100vh - 64px);
}

@media (max-width: 980px) {
    .ah-layout {
        grid-template-columns: 1fr;
    }
}

/* Left Sidebar: Commons Directory */
.ah-sidebar {
    background-color: var(--bg-surface);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    max-height: calc(100vh - 64px);
    position: sticky;
    top: 64px;
}

.ah-sidebar-header {
    padding: 0.85rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
}

.ah-ns-tabs {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.25rem;
    background-color: var(--bg-elevated);
    padding: 0.22rem;
    border-radius: 0.5rem;
}

.ah-ns-tab {
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.73rem;
    font-weight: 600;
    padding: 0.4rem 0.25rem;
    border-radius: 0.38rem;
    cursor: pointer;
    transition: background-color 0.15s, color 0.15s;
}

.ah-ns-tab.active {
    background-color: var(--bg-surface);
    color: var(--text-primary);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12);
}

.ah-directory-list {
    flex: 1;
    overflow-y: auto;
    padding: 0.65rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.ah-twin-item {
    border: 1px solid var(--border-color);
    background-color: var(--bg-surface);
    border-radius: 0.65rem;
    padding: 0.75rem;
    cursor: pointer;
    text-align: left;
    transition: border-color 0.15s, transform 0.1s;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.ah-twin-item:hover {
    border-color: var(--brand-primary);
}

.ah-twin-item.active {
    border-color: var(--brand-primary);
    background-color: var(--bg-elevated);
    box-shadow: inset 3px 0 0 var(--brand-primary);
}

.ah-twin-item-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.4rem;
}

.ah-twin-item-name {
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--text-primary);
}

.ah-twin-item-role {
    font-size: 0.76rem;
    color: var(--text-secondary);
}

.ah-twin-item-meta {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    flex-wrap: wrap;
    margin-top: 0.2rem;
    font-size: 0.7rem;
    color: var(--text-muted);
}

.ah-sidebar-footer {
    padding: 0.75rem 0.85rem;
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-elevated);
    font-size: 0.74rem;
    color: var(--text-secondary);
}

/* Main Workspace */
.ah-main {
    padding: 1.25rem 1.5rem;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 1.15rem;
}

.ah-twin-header {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 0.85rem;
    padding: 1.15rem 1.35rem 0 1.35rem;
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
}

.ah-twin-header-top {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}

.ah-badge-row {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    flex-wrap: wrap;
    margin-bottom: 0.35rem;
}

.ah-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.18rem 0.55rem;
    border-radius: 999px;
    font-size: 0.72rem;
    font-weight: 600;
    background-color: var(--bg-elevated);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.ah-badge-archetype {
    color: #38bdf8;
    border-color: rgba(56, 189, 248, 0.35);
}

.ah-badge-mind {
    color: #c084fc;
    border-color: rgba(192, 132, 252, 0.35);
}

.ah-badge-open {
    color: #34d399;
    border-color: rgba(52, 211, 153, 0.35);
}

.ah-badge-curated {
    color: #fbbf24;
    border-color: rgba(251, 191, 36, 0.35);
}

.ah-twin-title {
    margin: 0;
    font-size: 1.45rem;
    font-weight: 800;
}

.ah-twin-subtitle {
    margin: 0.25rem 0 0 0;
    font-size: 0.88rem;
    color: var(--text-secondary);
}

.ah-canon-links {
    display: flex;
    gap: 0.65rem;
    flex-wrap: wrap;
    margin-top: 0.4rem;
    font-size: 0.76rem;
}

.ah-canon-links a {
    color: var(--brand-primary);
    text-decoration: none;
}

.ah-canon-links a:hover {
    text-decoration: underline;
}

.ah-twin-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

/* Alert Banners */
.ah-alert-banner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.65rem 0.95rem;
    border-radius: 0.6rem;
    font-size: 0.83rem;
}

.ah-alert-upgrade {
    background-color: rgba(99, 102, 241, 0.12);
    border: 1px solid rgba(99, 102, 241, 0.4);
}

.ah-alert-upstream {
    background-color: rgba(13, 148, 136, 0.12);
    border: 1px solid rgba(13, 148, 136, 0.4);
}

.ah-alert-warning {
    background-color: rgba(245, 158, 11, 0.14);
    border: 1px solid rgba(245, 158, 11, 0.45);
    margin-bottom: 0.75rem;
}

/* Primary Workspace Tabs */
.ah-workspace-tabs {
    display: flex;
    gap: 0.35rem;
    border-top: 1px solid var(--border-color);
    padding-top: 0.5rem;
    overflow-x: auto;
}

.ah-ws-tab {
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.84rem;
    font-weight: 600;
    padding: 0.6rem 0.95rem;
    border-bottom: 2px solid transparent;
    cursor: pointer;
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

.ah-ws-tab:hover {
    color: var(--text-primary);
}

.ah-ws-tab.active {
    color: var(--brand-primary);
    border-bottom-color: var(--brand-primary);
}

.ah-count-badge {
    background-color: var(--brand-primary);
    color: #fff;
    font-size: 0.7rem;
    padding: 0.05rem 0.42rem;
    border-radius: 999px;
}

/* Grids & Cards */
.ah-wiki-grid {
    display: grid;
    grid-template-columns: 1.65fr 1fr;
    gap: 1.15rem;
    align-items: start;
}

.ah-contribute-grid {
    display: grid;
    grid-template-columns: 1.25fr 1fr;
    gap: 1.15rem;
    align-items: start;
}

.ah-sandbox-layout {
    display: grid;
    grid-template-columns: 340px 1fr;
    gap: 1.15rem;
    align-items: start;
}

@media (max-width: 1150px) {
    .ah-wiki-grid,
    .ah-contribute-grid,
    .ah-sandbox-layout {
        grid-template-columns: 1fr;
    }
}

.ah-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 0.85rem;
    padding: 1.15rem;
}

.ah-card-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 0.75rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.85rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.ah-card-header h3 {
    margin: 0;
    font-size: 1.02rem;
}

.ah-muted-sm {
    margin: 0.2rem 0 0 0;
    font-size: 0.79rem;
    color: var(--text-muted);
}

.ah-muted-xs {
    margin: 0.25rem 0 0 0;
    font-size: 0.73rem;
    color: var(--text-muted);
}

/* Markdown & Interactive [src:ID] Footnote Pills */
.ah-markdown-body {
    font-size: 0.92rem;
    line-height: 1.65;
}

.ah-markdown-body h1,
.ah-markdown-body h2,
.ah-markdown-body h3 {
    margin-top: 1.15rem;
    margin-bottom: 0.45rem;
}

.ah-markdown-body h2 {
    font-size: 1.05rem;
    padding-bottom: 0.3rem;
    border-bottom: 1px solid var(--border-color);
}

.ah-cit-pill,
.ah-cit-pill-demo {
    display: inline-flex;
    align-items: center;
    font-size: 0.7rem;
    font-weight: 700;
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    padding: 0.08rem 0.42rem;
    margin-left: 0.25rem;
    border-radius: 0.35rem;
    background-color: rgba(99, 102, 241, 0.15);
    color: var(--brand-primary);
    border: 1px solid rgba(99, 102, 241, 0.35);
    cursor: pointer;
    vertical-align: baseline;
}

.ah-cit-pill:hover {
    background-color: var(--brand-primary);
    color: #fff;
}

/* Provenance Citation Cards */
.ah-citations-list,
.ah-proposals-list,
.ah-snapshots-list,
.ah-gap-checklist {
    display: flex;
    flex-direction: column;
    gap: 0.7rem;
}

.ah-citation-card {
    border: 1px solid var(--border-color);
    border-radius: 0.65rem;
    padding: 0.8rem;
    background-color: var(--bg-elevated);
    transition: border-color 0.2s;
}

.ah-citation-card.highlighted {
    border-color: var(--brand-primary);
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.3);
}

.ah-citation-card.redacted {
    opacity: 0.55;
    text-decoration: line-through;
}

.ah-citation-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    margin-bottom: 0.35rem;
}

/* Visual Line Diff Viewer */
.ah-diff-viewer {
    border: 1px solid var(--border-color);
    border-radius: 0.55rem;
    overflow: hidden;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 0.77rem;
    max-height: 340px;
    overflow-y: auto;
    background-color: var(--bg-canvas);
}

.ah-diff-line {
    display: flex;
    padding: 0.18rem 0.6rem;
    white-space: pre-wrap;
    word-break: break-word;
}

.ah-diff-line-prefix {
    width: 1.5rem;
    flex-shrink: 0;
    user-select: none;
    font-weight: 700;
}

.ah-diff-added {
    background-color: rgba(16, 185, 129, 0.16);
    color: #34d399;
}

html.theme-light .ah-diff-added {
    color: #065f46;
}

.ah-diff-removed {
    background-color: rgba(239, 68, 68, 0.16);
    color: #f87171;
    text-decoration: line-through;
}

html.theme-light .ah-diff-removed {
    color: #991b1b;
}

.ah-diff-unchanged {
    color: var(--text-muted);
}

/* Subtabs & Bridge UI */
.ah-subtabs {
    display: flex;
    gap: 0.35rem;
    flex-wrap: wrap;
    margin-top: 0.5rem;
}

.ah-subtab {
    border: 1px solid var(--border-color);
    background-color: var(--bg-elevated);
    color: var(--text-secondary);
    padding: 0.4rem 0.7rem;
    border-radius: 0.45rem;
    font-size: 0.76rem;
    font-weight: 600;
    cursor: pointer;
}

.ah-subtab.active {
    background-color: var(--brand-primary);
    border-color: var(--brand-primary);
    color: #fff;
}

.ah-bridge-explainer {
    background-color: var(--bg-elevated);
    border-left: 3px solid var(--accent-teal);
    padding: 0.75rem 0.95rem;
    border-radius: 0.45rem;
    font-size: 0.81rem;
    margin-bottom: 0.85rem;
}

.ah-bridge-explainer ol {
    margin: 0.4rem 0 0 1.15rem;
    padding: 0;
}

.ah-bridge-step-row {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    flex-wrap: wrap;
}

.ah-staged-preview {
    margin-top: 1.15rem;
    padding-top: 1rem;
    border-top: 2px dashed var(--border-color);
}

.ah-staged-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.6rem;
}

.ah-staged-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.6rem;
    margin-top: 0.75rem;
}

/* Chat Sandbox */
.ah-chat-card {
    display: flex;
    flex-direction: column;
    height: 600px;
}

.ah-chat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border-color);
}

.ah-chat-header h3 {
    margin: 0;
}

.ah-chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 0.9rem 0.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
}

.ah-msg {
    max-width: 85%;
    padding: 0.75rem 0.95rem;
    border-radius: 0.75rem;
    font-size: 0.9rem;
    position: relative;
}

.ah-msg-user {
    align-self: flex-end;
    background-color: var(--brand-primary);
    color: #fff;
}

.ah-msg-model {
    align-self: flex-start;
    background-color: var(--bg-elevated);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.ah-msg-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    margin-top: 0.45rem;
    padding-top: 0.35rem;
    border-top: 1px solid var(--border-color);
    font-size: 0.71rem;
    color: var(--text-muted);
}

.ah-msg-actions {
    display: flex;
    gap: 0.4rem;
}

.ah-chat-input-bar {
    display: flex;
    gap: 0.6rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border-color);
}

.ah-chip-stack {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.ah-prompt-chip {
    text-align: left;
    padding: 0.5rem 0.65rem;
    border-radius: 0.5rem;
    border: 1px solid var(--border-color);
    background-color: var(--bg-elevated);
    color: var(--text-secondary);
    font-size: 0.76rem;
    cursor: pointer;
}

.ah-prompt-chip:hover {
    border-color: var(--brand-primary);
    color: var(--text-primary);
}

/* Forms & Buttons */
.ah-form-group {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
    margin-bottom: 0.85rem;
}

.ah-form-group label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.ah-form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
}

@media (max-width: 640px) {
    .ah-form-row {
        grid-template-columns: 1fr;
    }
}

.ah-input,
.ah-textarea,
.ah-select-compact {
    width: 100%;
    padding: 0.52rem 0.7rem;
    border-radius: 0.5rem;
    border: 1px solid var(--border-color);
    background-color: var(--bg-canvas);
    color: var(--text-primary);
    font-size: 0.85rem;
    font-family: inherit;
}

.ah-code-textarea {
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 0.79rem;
}

.ah-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    padding: 0.48rem 0.85rem;
    border-radius: 0.5rem;
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    border: 1px solid transparent;
    transition: background-color 0.15s, border-color 0.15s;
}

.ah-btn-sm {
    padding: 0.3rem 0.6rem;
    font-size: 0.75rem;
}

.ah-btn-primary {
    background-color: var(--brand-primary);
    color: #fff;
}

.ah-btn-primary:hover {
    background-color: var(--brand-hover);
}

.ah-btn-secondary {
    background-color: var(--bg-elevated);
    color: var(--text-primary);
    border-color: var(--border-color);
}

.ah-btn-secondary:hover {
    border-color: var(--brand-primary);
}

.ah-btn-danger {
    background-color: #dc2626;
    color: #fff;
}

.ah-btn-danger-ghost {
    background-color: transparent;
    color: #f87171;
    border-color: rgba(239, 68, 68, 0.35);
}

.ah-pill-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.38rem 0.75rem;
    border-radius: 999px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-elevated);
    color: var(--text-primary);
    font-size: 0.77rem;
    font-weight: 600;
    cursor: pointer;
}

/* Native <dialog> Modals & Backdrop per modern-web-guidance */
dialog.ah-dialog {
    border: 1px solid var(--border-color);
    border-radius: 0.9rem;
    background-color: var(--bg-surface);
    color: var(--text-primary);
    padding: 0;
    width: min(680px, 94vw);
    max-height: 88vh;
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.45);
}

dialog.ah-dialog::backdrop {
    background-color: rgba(0, 0, 0, 0.55);
    backdrop-filter: blur(3px);
}

.ah-dialog-inner {
    display: flex;
    flex-direction: column;
    max-height: 88vh;
}

.ah-dialog-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
}

.ah-dialog-header h2 {
    margin: 0;
    font-size: 1.05rem;
}

.ah-dialog-close {
    border: none;
    background: transparent;
    color: var(--text-muted);
    font-size: 1.1rem;
    cursor: pointer;
}

.ah-dialog-body {
    padding: 1.15rem 1.25rem;
    overflow-y: auto;
}

.ah-dialog-footer {
    display: flex;
    justify-content: flex-end;
    gap: 0.6rem;
    padding: 0.85rem 1.25rem;
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-elevated);
}

.ah-info-callout {
    background-color: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-radius: 0.55rem;
    padding: 0.75rem 0.9rem;
    font-size: 0.8rem;
    margin-bottom: 1rem;
}

.ah-warning-callout {
    border-color: rgba(245, 158, 11, 0.5);
    background-color: rgba(245, 158, 11, 0.1);
}

.ah-pre-block {
    background-color: var(--bg-canvas);
    border: 1px solid var(--border-color);
    padding: 0.75rem;
    border-radius: 0.5rem;
    overflow-x: auto;
    font-size: 0.78rem;
}

.ah-code-copy-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    background-color: var(--bg-canvas);
    border: 1px solid var(--border-color);
    padding: 0.45rem 0.75rem;
    border-radius: 0.5rem;
}

/* Toast Notifications */
.ah-toast-container {
    position: fixed;
    bottom: 1.25rem;
    right: 1.25rem;
    z-index: 100;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.ah-toast {
    background-color: var(--bg-surface);
    color: var(--text-primary);
    border: 1px solid var(--brand-primary);
    border-left: 4px solid var(--brand-primary);
    padding: 0.7rem 1rem;
    border-radius: 0.55rem;
    font-size: 0.83rem;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.25);
}