/* ═══════════════════════════════════════════════════════════════
   Tanngrisnir — App Styles
   ═══════════════════════════════════════════════════════════════ */

/* ── Layer B: Shared semantic tokens ──────────────────────────────── */
:root {
    --t-topbar-height: 48px;
    --t-surface:          #ffffff;
    --t-surface-elevated: #f5f5f7;
    --t-surface-sunken:   #eeeef0;
    --t-border:           rgba(0, 0, 0, 0.10);
    --t-text-muted:       #6c757d;
    --t-accent:           rgb(108, 142, 191); /* midday default; overridden by time-of-day JS */
    --t-accent-rgb:       108, 142, 191;
    --t-font-ui:          'Inter', system-ui, sans-serif;
    --t-font-serif:       'Source Serif 4', Georgia, serif;
}

[data-bs-theme="dark"] {
    --t-surface:          #181c24;
    --t-surface-elevated: #111318;
    --t-surface-sunken:   #0e1016;
    --t-border:           rgba(255, 255, 255, 0.08);
    --t-text-muted:       #8892a0;
}

/* ── App-specific variables (legacy; aliases point to Layer B) ── */
:root {
    --sidebar-width: 260px;
    --artifact-panel-width: 300px;
    --composer-height: auto;
    --header-height: 52px;
    --message-assistant-bg: transparent;
    /* chat-specific values that have no Layer B equivalent */
    --message-user-bg: #1e2433;
    /* Legacy aliases → Layer B */
    --sidebar-bg:   var(--t-surface-elevated);
    --chat-bg:      var(--t-surface);
    --border-color: var(--t-border);
    --accent:       var(--t-accent);
    --text-muted:   var(--t-text-muted);
}

[data-bs-theme="light"] {
    --message-user-bg: #f0f2f5;
}

/* ── Sitewide font ── */
body { font-family: var(--t-font-ui); }

/* ── Serif / reading context ── */
.prose {
    font-family: var(--t-font-serif);
    font-size: 1.0625rem;
    line-height: 1.78;
    font-optical-sizing: auto;
}

/* ── Reset / Globals ── */
*, *::before, *::after { box-sizing: border-box; }
html, body { height: 100%; }
/* Prevent document-level scroll only on the chat page; other pages scroll normally */
/* overflow:clip (not hidden) so position:sticky on the topbar still works */
body.chat-page { overflow: clip; }

/* ══════════════════════════════════════════ SHARED TOPBAR ════ */

.t-topbar {
    position: sticky; top: 0; z-index: 1020;
    height: var(--t-topbar-height);
    display: flex; align-items: center; justify-content: space-between;
    padding: 0 1rem;
    background: var(--t-surface-elevated);
    border-bottom: 1px solid var(--t-border);
    gap: 0.75rem;
}
.t-topbar-left {
    display: flex; align-items: center; gap: 0.5rem;
    min-width: 0; flex: 1;
}
.t-topbar-right {
    display: flex; align-items: center; gap: 0.25rem;
    flex-shrink: 0; position: relative;
}
.t-topbar-brand {
    font-weight: 700; font-size: 0.95rem; letter-spacing: -0.02em;
    text-decoration: none; color: var(--bs-body-color); white-space: nowrap; flex-shrink: 0;
}
.t-topbar-breadcrumb {
    font-size: 0.825rem; color: var(--t-text-muted);
    overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.t-topbar-breadcrumb:not(:empty)::before { content: '/'; margin-right: 0.4rem; opacity: 0.4; }
.t-topbar-breadcrumb a { color: inherit; text-decoration: none; }
.t-topbar-breadcrumb a:hover { color: var(--bs-body-color); }

.t-theme-toggle, .t-hamburger {
    display: flex; align-items: center; justify-content: center;
    width: 32px; height: 32px; border-radius: 6px;
    color: var(--t-text-muted);
    transition: color 0.15s, background 0.15s;
}
.t-theme-toggle:hover, .t-hamburger:hover {
    color: var(--bs-body-color); background: rgba(var(--t-accent-rgb), 0.10);
}

/* Show sun (→ switch to light) in dark mode; moon (→ switch to dark) in light mode */
[data-bs-theme="light"] .t-icon-sun  { display: none; }
[data-bs-theme="dark"]  .t-icon-moon { display: none; }

.t-nav-drawer {
    position: absolute; top: calc(100% + 0.5rem); right: 0;
    min-width: 200px;
    background: var(--bs-body-bg);
    border: 1px solid var(--t-border);
    border-radius: 12px; padding: 0.4rem 0;
    box-shadow: 0 8px 28px rgba(0,0,0,0.25);
    z-index: 1030;
}
.t-nav-link {
    display: block; padding: 0.45rem 1.1rem;
    color: var(--bs-body-color); text-decoration: none; font-size: 0.875rem;
    transition: background 0.12s;
}
.t-nav-link:hover { background: rgba(var(--t-accent-rgb), 0.08); color: var(--bs-body-color); }
.t-nav-link.active { color: var(--t-accent); font-weight: 500; }
.t-nav-divider { height: 1px; background: var(--t-border); margin: 0.4rem 0; }
.t-nav-action {
    display: block; width: 100%; padding: 0.45rem 1.1rem;
    background: none; border: none; text-align: left;
    font-size: 0.875rem; cursor: pointer; color: var(--t-text-muted);
    transition: background 0.12s, color 0.12s; font-family: inherit;
}
.t-nav-action:hover { background: rgba(var(--t-accent-rgb), 0.08); color: var(--bs-body-color); }

.t-nav-section {
    display: flex; align-items: center; justify-content: space-between;
    width: 100%; padding: 0.3rem 1.1rem;
    background: none; border: none; text-align: left;
    font-size: 0.7rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase;
    color: var(--t-text-muted); cursor: pointer; font-family: inherit;
    margin-top: 0.3rem; transition: color 0.12s;
}
.t-nav-section:hover { color: var(--bs-body-color); }

.nav-group-link { padding-left: 1.9rem; }
.nav-chevron { transition: transform 0.18s; flex-shrink: 0; }
.nav-chevron.rotated { transform: rotate(180deg); }

.btn-reset {
    background: none; border: none; padding: 0; cursor: pointer;
    color: inherit; font: inherit;
}
.btn-ghost {
    background: none; border: none; padding: 4px 8px; cursor: pointer;
    color: var(--bs-body-color); border-radius: 6px; line-height: 1;
    opacity: 0.6; transition: opacity 0.15s;
}
.btn-ghost:hover { opacity: 1; background: var(--border-color); }

/* ── Accent buttons — wired to the time-of-day --t-accent token ──
   Bootstrap has no class for the app accent, so these fill the gap that
   bright `btn-info` used to. Color/border/hover only — Bootstrap sizing
   (.btn, .btn-sm) still applies. */
.btn-accent {
    background: var(--t-accent);
    border: 1px solid var(--t-accent);
    color: #fff;
    transition: background 0.15s, border-color 0.15s;
}
.btn-accent:hover,
.btn-accent:focus-visible {
    background: color-mix(in srgb, var(--t-accent) 84%, #000);
    border-color: color-mix(in srgb, var(--t-accent) 84%, #000);
    color: #fff;
}
.btn-outline-accent {
    background: none;
    border: 1px solid var(--t-accent);
    color: var(--t-accent);
    transition: background 0.15s, color 0.15s;
}
.btn-outline-accent:hover,
.btn-outline-accent:focus-visible {
    background: rgba(var(--t-accent-rgb), 0.10);
    color: var(--t-accent);
}
/* Ghost: no border until hover — the quiet "Revise with AI" treatment */
.btn-accent-ghost {
    background: none;
    border: 1px solid transparent;
    color: var(--t-accent);
    transition: background 0.15s, border-color 0.15s;
}
.btn-accent-ghost:hover,
.btn-accent-ghost:focus-visible {
    background: rgba(var(--t-accent-rgb), 0.10);
    color: var(--t-accent);
}

[x-cloak] { display: none !important; }

/* ═══════════════════════════════════════════ CHAT LAYOUT ════ */

.chat-layout {
    display: flex;
    height: calc(100vh - var(--t-topbar-height));
    height: calc(100dvh - var(--t-topbar-height)); /* dynamic viewport — shrinks when mobile keyboard opens */
    overflow: hidden;
    position: relative;
}

/* ── Sidebar ── */
.sidebar {
    width: var(--sidebar-width);
    flex-shrink: 0;
    background: var(--sidebar-bg);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: transform 0.25s ease;
    z-index: 100;
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 16px 12px;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-brand {
    font-weight: 700;
    font-size: 1rem;
    text-decoration: none;
    color: var(--bs-body-color);
    letter-spacing: -0.02em;
}

.sidebar-close {
    border: none; background: none; padding: 2px;
    color: var(--text-muted); cursor: pointer;
}

.sidebar-section {
    padding: 10px 12px 6px;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-label {
    display: block;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
    margin-bottom: 6px;
    font-weight: 600;
}

.sidebar-search .form-control {
    font-size: 0.85rem;
    border-radius: 8px;
}

/* Agents list */
.agent-list { display: flex; flex-direction: column; gap: 1px; }
.agent-item {
    display: flex; align-items: center; gap: 8px;
    padding: 6px 8px; border-radius: 6px;
    text-decoration: none; color: var(--bs-body-color);
    font-size: 0.85rem; transition: background 0.1s;
}
.agent-item:hover { background: var(--border-color); color: var(--bs-body-color); }
.agent-item.active { background: rgba(108, 142, 191, 0.15); color: var(--accent); }
.agent-item.agent-manage { opacity: 0.6; }
.agent-icon { font-size: 0.75rem; flex-shrink: 0; opacity: 0.7; }

/* Conversation list */
.sidebar-convos {
    flex: 1;
    overflow-y: auto;
    padding: 6px 0;
    scrollbar-width: thin;
    scrollbar-color: var(--border-color) transparent;
}

.convo-group { margin-bottom: 4px; }
.convo-group-label {
    padding: 8px 14px 3px;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    font-weight: 600;
}

.convo-item {
    position: relative;
    display: flex;
    align-items: center;
    padding: 2px 8px 2px 12px;
    border-radius: 6px;
    margin: 0 4px;
    transition: background 0.1s;
}
.convo-item:hover { background: var(--border-color); }
.convo-item.active { background: rgba(108, 142, 191, 0.12); }

.convo-link {
    flex: 1;
    text-decoration: none;
    color: var(--bs-body-color);
    font-size: 0.82rem;
    padding: 5px 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.3;
}

.convo-actions { display: flex; align-items: center; }
.convo-menu-btn {
    background: none; border: none; padding: 2px 6px;
    color: var(--text-muted); cursor: pointer; font-size: 1rem;
    opacity: 0; transition: opacity 0.1s; border-radius: 4px;
}
.convo-item:hover .convo-menu-btn { opacity: 1; }
.convo-menu-btn:hover { background: var(--border-color); color: var(--bs-body-color); }

.convo-menu {
    position: absolute; right: 8px; top: 100%; z-index: 200;
    background: var(--bs-body-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px; padding: 4px;
    min-width: 120px; box-shadow: 0 4px 16px rgba(0,0,0,0.3);
}
.convo-menu-item {
    display: block; width: 100%; text-align: left;
    background: none; border: none; padding: 6px 10px;
    font-size: 0.82rem; cursor: pointer; border-radius: 4px;
    color: var(--bs-body-color);
}
.convo-menu-item:hover { background: var(--border-color); }

/* Branch conversations — indented under parent */
.convo-branch {
    padding-left: 4px;
    margin-left: 8px;
    border-left: 2px solid var(--border-color);
}
.convo-branch-indicator {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-right: 3px;
    flex-shrink: 0;
    line-height: 1;
}
.convo-branch-deeper {
    font-size: 0.7rem; color: var(--text-muted); margin-left: 2px;
}

/* Sidebar tab nav */
.sidebar-tabs {
    display: flex;
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}
.sidebar-tab-btn {
    flex: 1;
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    padding: 7px 4px 6px;
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-muted);
    cursor: pointer;
    transition: color 0.1s, border-color 0.1s;
    text-align: center;
    margin-bottom: -1px;
}
.sidebar-tab-btn:hover { color: var(--bs-body-color); }
.sidebar-tab-btn.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

/* Sidebar tab content area */
.sidebar-tab-content {
    flex: 1;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    position: relative;
}

/* Generic pane — simple overflow scroll */
.sidebar-tab-pane {
    flex: 1;
    overflow-y: auto;
    padding: 8px 0;
    scrollbar-width: thin;
    scrollbar-color: var(--border-color) transparent;
}

/* History pane — nested flex so search stays fixed above scroll list */
.sidebar-tab-history {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* Sidebar footer */
.sidebar-footer {
    padding: 10px 14px;
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 8px;
}
.sidebar-footer-link {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-decoration: none;
    display: flex; align-items: center; gap: 5px;
    transition: color 0.1s;
}
.sidebar-footer-link:hover { color: var(--bs-body-color); }

/* ── Chat Main ── */
.chat-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background: var(--chat-bg);
}


.chat-title {
    font-size: 0.9rem;
    font-weight: 600;
    margin: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    cursor: pointer;
    border-bottom: 1px solid transparent;
    transition: border-color 0.15s;
}
.chat-title:hover { border-bottom-color: var(--border-color); }

.loop-status { display: flex; align-items: center; gap: 6px; }

.conv-cost-badge {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--bs-secondary-color);
    font-size: 0.7rem;
    font-variant-numeric: tabular-nums;
    letter-spacing: 0.01em;
    padding: 2px 7px;
    border-radius: 10px;
    transition: color 0.2s, border-color 0.2s;
}
.conv-cost-badge:hover {
    color: var(--bs-body-color);
    border-color: var(--bs-secondary-color);
}

/* Messages area */
.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 16px 0 8px;
    scroll-behavior: smooth;
    scrollbar-width: thin;
    scrollbar-color: var(--border-color) transparent;
}

.chat-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
}
.chat-empty-icon { font-size: 2.5rem; margin-bottom: 12px; opacity: 0.5; }

/* Messages */
.message {
    display: flex;
    gap: 12px;
    padding: 10px 20px;
    max-width: 100%;
    animation: messageIn 0.2s ease;
}
@keyframes messageIn {
    from { opacity: 0; transform: translateY(6px); }
    to   { opacity: 1; transform: translateY(0); }
}

.message-user {
    flex-direction: row-reverse;
}
.message-user .message-body {
    max-width: 72%;
    background: var(--message-user-bg);
    border-radius: 14px 14px 4px 14px;
    padding: 10px 14px;
}

.message-assistant .message-body {
    max-width: 85%;
}

.message-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--accent);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    font-weight: 700;
    flex-shrink: 0;
    margin-top: 2px;
}
.message-user .message-avatar { background: #4a7fbf; }

.message-content {
    font-size: 0.9rem;
    line-height: 1.6;
}

/* Markdown body styles */
.markdown-body h1, .markdown-body h2, .markdown-body h3 { margin-top: 1em; margin-bottom: 0.5em; }
.markdown-body h1 { font-size: 1.4em; }
.markdown-body h2 { font-size: 1.2em; }
.markdown-body h3 { font-size: 1.05em; }
.markdown-body p { margin-bottom: 0.7em; }
.markdown-body ul, .markdown-body ol { padding-left: 1.5em; margin-bottom: 0.7em; }
.markdown-body li { margin-bottom: 0.2em; }
.markdown-body code {
    background: rgba(255,255,255,0.08);
    padding: 0.15em 0.4em; border-radius: 4px;
    font-size: 0.85em; font-family: 'SF Mono', 'Cascadia Code', 'Fira Code', monospace;
}
[data-bs-theme="light"] .markdown-body code { background: rgba(0,0,0,0.06); }
.markdown-body pre {
    background: #0d1117; border-radius: 8px; padding: 14px;
    overflow-x: auto; white-space: pre-wrap; word-break: break-word; margin: 0.8em 0;
}
.markdown-body pre code { background: none; padding: 0; font-size: 0.875em; }
[data-bs-theme="light"] .markdown-body pre { background: #f6f8fa; }
.markdown-body blockquote {
    border-left: 3px solid var(--accent); margin: 0.7em 0;
    padding: 4px 12px; color: var(--text-muted);
}
.markdown-body table { width: 100%; border-collapse: collapse; margin: 0.8em 0; font-size: 0.85em; }
.markdown-body th, .markdown-body td { border: 1px solid var(--border-color); padding: 6px 10px; }
.markdown-body th { background: var(--message-user-bg); }
.markdown-body a { color: var(--accent); }
.markdown-body hr { border-color: var(--border-color); margin: 1em 0; }

/* Tool call blocks */
.tool-call-block {
    margin: 8px 0;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    font-size: 0.82rem;
}
.tool-call-header {
    display: flex; align-items: center; gap: 8px;
    padding: 7px 12px;
    background: rgba(255,255,255,0.04);
    border-bottom: 1px solid var(--border-color);
}
[data-bs-theme="light"] .tool-call-header { background: rgba(0,0,0,0.03); }
.tool-call-icon { font-size: 0.8rem; color: var(--accent); }
.tool-call-name { font-weight: 600; font-family: monospace; }
.tool-call-input {
    padding: 8px 12px;
    background: rgba(0,0,0,0.15);
    overflow-x: auto;
    max-height: 200px;
    white-space: pre-wrap;
    word-break: break-word;
}
[data-bs-theme="light"] .tool-call-input { background: rgba(0,0,0,0.04); }

/* Tool result content */
.tool-result-content {
    padding: 8px 12px;
    background: rgba(0,0,0,0.12);
    white-space: pre-wrap;
    word-break: break-word;
    overflow-wrap: break-word;
    font-size: 0.78rem;
    line-height: 1.5;
    margin: 0;
    font-family: 'SF Mono', 'Cascadia Code', 'Fira Code', monospace;
}
[data-bs-theme="light"] .tool-result-content { background: rgba(0,0,0,0.04); }

/* Flex layout for the reasoning toggle and the tokens-only static line.
   Deliberately NOT Bootstrap's .d-flex: that utility is `display:flex
   !important`, which outranks the inline `display:none` Alpine's x-show sets
   to hide an element — so a `.d-flex` + `x-show` element can never hide (the
   "Reasoning: 0 tokens" ghost line, #219 / follow-up). These plain (non-
   !important) rules let x-show's inline display:none win when the guard is
   false. A static guard (chat/test_stream_items_display_toggle.py) keeps
   `.d-flex` from creeping back onto an x-show element. */
.reasoning-toggle,
.reasoning-stat {
    display: flex;
}

/* Reasoning rendered as markdown — wraps .markdown-body, overrides heading sizes */
.reasoning-markdown {
    font-size: 0.75rem;
    color: var(--text-muted);
    background: rgba(0,0,0,0.12);
    border-radius: 6px;
    padding: 8px 10px;
    line-height: 1.5;
}
[data-bs-theme="light"] .reasoning-markdown { background: rgba(0,0,0,0.04); }
.reasoning-markdown h1,
.reasoning-markdown h2,
.reasoning-markdown h3,
.reasoning-markdown h4,
.reasoning-markdown h5,
.reasoning-markdown h6 {
    font-size: inherit;
    font-weight: 600;
    margin: 0.3em 0;
}
.reasoning-markdown p { margin-bottom: 0.5em; }
.reasoning-markdown p:last-child { margin-bottom: 0; }

/* Reasoning / thinking content (legacy pre-wrap fallback) */
.reasoning-content {
    font-size: 0.75rem;
    white-space: pre-wrap;
    word-break: break-word;
    overflow-wrap: break-word;
    line-height: 1.5;
    color: var(--text-muted);
    background: rgba(0,0,0,0.12);
    border-radius: 6px;
    padding: 8px 10px;
    font-family: inherit;
    margin: 0;
}
[data-bs-theme="light"] .reasoning-content { background: rgba(0,0,0,0.04); }

/* Compaction notice */
.compaction-notice {
    margin: 8px 0;
    padding: 7px 12px;
    border: 1px dashed var(--border-color);
    border-radius: 8px;
    font-size: 0.82rem;
    color: var(--text-muted);
}
.compaction-notice summary {
    cursor: pointer;
    list-style: none;
    user-select: none;
}
.compaction-notice summary::-webkit-details-marker { display: none; }

/* Scroll-to-bottom button */
.scroll-to-bottom-wrap {
    position: relative;
    display: flex;
    justify-content: center;
    flex-shrink: 0;
    pointer-events: none;
    margin-top: -32px;
    margin-bottom: 8px;
    z-index: 40;
}
.scroll-to-bottom-btn {
    pointer-events: all;
    display: flex; align-items: center; gap: 6px;
    padding: 6px 14px;
    background: var(--accent);
    color: #fff;
    border: none; border-radius: 20px;
    font-size: 0.8rem; font-weight: 500;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(0,0,0,0.4);
    transition: background 0.15s, transform 0.1s;
}
.scroll-to-bottom-btn:hover { background: #5a7aab; transform: translateY(-1px); }

/* Typing indicator */
.typing-indicator {
    display: flex; align-items: center; gap: 4px;
    padding: 8px 0;
}
.typing-indicator span {
    width: 6px; height: 6px; border-radius: 50%;
    background: var(--text-muted);
    animation: typingBounce 1.2s infinite ease-in-out;
}
.typing-indicator span:nth-child(2) { animation-delay: 0.2s; }
.typing-indicator span:nth-child(3) { animation-delay: 0.4s; }
@keyframes typingBounce {
    0%, 60%, 100% { transform: translateY(0); opacity: 0.4; }
    30% { transform: translateY(-5px); opacity: 1; }
}

/* Message actions */
.message-actions {
    display: flex; gap: 4px; margin-top: 6px; opacity: 0;
    transition: opacity 0.15s;
}
.message-assistant:hover .message-actions { opacity: 1; }
.msg-action-btn {
    background: none; border: none; padding: 3px 6px;
    color: var(--text-muted); cursor: pointer;
    border-radius: 4px; font-size: 0.75rem;
    transition: background 0.1s, color 0.1s;
}
.msg-action-btn:hover { background: var(--border-color); color: var(--bs-body-color); }

/* ask_user sticky zone */
.uiq-wrap {
    flex-shrink: 0;
    border-top: 1px solid var(--border-color);
    padding: 14px 20px 16px;
    background: rgba(255,255,255,.02);
    display: flex;
    flex-direction: column;
    gap: 10px;
    max-height: 55vh;
    overflow-y: auto;
}
[data-bs-theme="light"] .uiq-wrap { background: rgba(0,0,0,.02); }
.uiq-question { font-size: .95rem; font-weight: 600; margin: 0; color: var(--bs-body-color); }
.uiq-options { display: flex; flex-direction: column; gap: 6px; }
.uiq-option-row {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 9px 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    transition: background .12s, border-color .12s;
    user-select: none;
}
.uiq-option-row:hover { background: rgba(255,255,255,.06); border-color: rgba(255,255,255,.22); }
.uiq-option-row--selected { background: rgba(var(--bs-primary-rgb),.1); border-color: var(--bs-primary); }
[data-bs-theme="light"] .uiq-option-row:hover { background: rgba(0,0,0,.04); border-color: rgba(0,0,0,.18); }
[data-bs-theme="light"] .uiq-option-row--selected { background: rgba(var(--bs-primary-rgb),.08); }
.uiq-checkbox,
.uiq-radio {
    flex-shrink: 0;
    width: 16px;
    height: 16px;
    margin-top: 2px;
    border: 1.5px solid rgba(255,255,255,.3);
    background: transparent;
    transition: border-color .12s, background .12s;
}
.uiq-checkbox { border-radius: 4px; }
.uiq-radio    { border-radius: 50%; }
.uiq-checkbox--checked {
    background: var(--bs-primary);
    border-color: var(--bs-primary);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath fill='white' d='M13.854 3.646a.5.5 0 0 1 0 .708l-7 7a.5.5 0 0 1-.708 0l-3.5-3.5a.5.5 0 1 1 .708-.708L6.5 10.293l6.646-6.647a.5.5 0 0 1 .708 0z'/%3E%3C/svg%3E");
    background-size: 12px;
    background-repeat: no-repeat;
    background-position: center;
}
.uiq-radio--checked {
    border-color: var(--bs-primary);
    background: radial-gradient(circle, var(--bs-primary) 45%, transparent 46%);
}
[data-bs-theme="light"] .uiq-checkbox,
[data-bs-theme="light"] .uiq-radio { border-color: rgba(0,0,0,.3); }
.uiq-option-text { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.uiq-option-label { font-size: .9rem; color: var(--bs-body-color); line-height: 1.3; }
.uiq-option-description { font-size: .78rem; color: var(--text-muted); line-height: 1.3; }
.uiq-other-input {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding-left: 26px;
    max-width: 380px;
}
.uiq-submit-btn {
    align-self: flex-start;
    background: var(--bs-primary);
    border: none;
    border-radius: 7px;
    color: #fff;
    padding: 7px 18px;
    font-size: .875rem;
    font-weight: 500;
    cursor: pointer;
    transition: opacity .15s;
}
.uiq-submit-btn:disabled { opacity: .4; cursor: not-allowed; }
.uiq-submit-btn:not(:disabled):hover { opacity: .88; }

/* HITL approval */
.hitl-approval { padding: 0 20px; }
.hitl-card {
    border: 1px solid #ffc107;
    border-radius: 10px;
    padding: 14px 16px;
    background: rgba(255, 193, 7, 0.06);
}
.hitl-card pre { background: rgba(0,0,0,0.2); border-radius: 6px; padding: 8px; font-size: 0.75rem; }

/* Inbound security-hold preview: collapsible excerpt of the flagged content. */
.security-hold-preview {
    max-height: 16rem;
    overflow: auto;
    word-break: break-word;
    font-family: var(--bs-font-monospace);
    font-size: 0.75rem;
    line-height: 1.6;
}
.security-hold-hl {
    background: rgba(220, 53, 69, 0.30);
    color: inherit;
    padding: 0 2px;
    border-radius: 3px;
}

/* ── Composer ── */
.chat-composer {
    flex-shrink: 0;
    border-top: 1px solid var(--border-color);
    padding: 10px 16px 14px;
    position: relative;
}

.composer-config {
    padding: 12px 4px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 10px;
}
.composer-config-inner { max-width: 100%; }

.composer-bar {
    display: flex;
    align-items: flex-end;
    gap: 8px;
    background: var(--message-user-bg);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 8px 10px;
    transition: border-color 0.15s;
}
.composer-bar:focus-within { border-color: var(--accent); }

.composer-textarea {
    flex: 1;
    background: none;
    border: none;
    outline: none;
    resize: none;
    font-size: 0.9rem;
    line-height: 1.5;
    color: var(--bs-body-color);
    max-height: 200px;
    overflow-y: auto;
    padding: 2px 0;
    scrollbar-width: thin;
}
.composer-textarea::placeholder { color: var(--text-muted); }

.composer-btn {
    background: none; border: none;
    color: var(--text-muted); cursor: pointer;
    padding: 4px; border-radius: 6px;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0; transition: color 0.15s, background 0.15s;
    align-self: flex-end; margin-bottom: 1px;
}
.composer-btn:hover { color: var(--bs-body-color); background: var(--border-color); }

.composer-send {
    background: var(--accent);
    border: none; color: white; cursor: pointer;
    width: 34px; height: 34px; border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0; transition: background 0.15s, opacity 0.15s;
    align-self: flex-end;
}
.composer-send:hover:not(:disabled) { background: #5a7aab; }
.composer-send:disabled { opacity: 0.4; cursor: not-allowed; }

.composer-footer {
    padding: 4px 2px 0;
    font-size: 0.75rem;
    color: var(--text-muted);
    display: flex; align-items: center;
}

/* ── Skill chip on sent user messages ── */
.skill-chip {
    display: inline-flex; align-items: center; gap: 4px;
    font-size: 0.72rem; font-weight: 500;
    color: var(--accent); opacity: 0.85;
}

/* ── Composer skill selection UI ── */
.skill-chip-selected {
    display: flex; align-items: center; gap: 5px;
    font-size: 0.75rem; font-weight: 500;
    color: var(--accent);
    padding: 2px 6px 4px;
}
.skill-chip-clear {
    background: none; border: none; cursor: pointer;
    color: var(--text-muted); font-size: 0.9rem;
    padding: 0 2px; line-height: 1;
}
.skill-chip-clear:hover { color: var(--bs-body-color); }
.composer-btn.active { color: var(--accent); }

.skill-menu {
    position: absolute; bottom: calc(100% + 6px); left: 0; right: 0;
    background: var(--sidebar-bg);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.18);
    z-index: 200;
    max-height: 260px;
    display: flex; flex-direction: column;
    overflow: hidden;
}
.skill-menu-search { padding: 8px 10px 4px; }
.skill-menu-input {
    width: 100%; background: var(--bs-body-bg);
    border: 1px solid var(--border-color); border-radius: 6px;
    padding: 5px 9px; font-size: 0.85rem;
    color: var(--bs-body-color); outline: none;
}
.skill-menu-input:focus { border-color: var(--accent); }
.skill-menu-list { overflow-y: auto; flex: 1; padding: 4px 4px 6px; }
.skill-menu-item {
    display: flex; flex-direction: column; align-items: flex-start;
    width: 100%; background: none; border: none; text-align: left;
    padding: 7px 10px; border-radius: 6px; cursor: pointer;
    color: var(--bs-body-color); transition: background 0.1s;
}
.skill-menu-item:hover,
.skill-menu-item.active { background: var(--border-color); }
.skill-menu-item-name { font-size: 0.85rem; font-weight: 500; }
.skill-menu-item-desc { font-size: 0.75rem; line-height: 1.3; margin-top: 1px; }
.skill-menu-empty { font-size: 0.8rem; }

/* ── Artifact Panel ── */
.artifact-panel {
    width: var(--artifact-panel-width);
    flex-shrink: 0;
    border-left: 1px solid var(--border-color);
    background: var(--sidebar-bg);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transform: translateX(100%);
    transition: transform 0.25s ease;
    position: absolute; right: 0; top: 0; height: 100%;
    z-index: 90;
}
.artifact-panel.open { transform: translateX(0); }

@media (min-width: 1200px) {
    .artifact-panel {
        position: relative;
        transform: none;
        display: none;
    }
    .artifact-panel.open { display: flex; }
}

.artifact-panel-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 14px 14px 12px;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.85rem;
}
.artifact-panel-body { flex: 1; overflow-y: auto; padding: 10px; }
.artifact-card-link { text-decoration: none; display: block; margin-bottom: 8px; }
.artifact-card {
    border: 1px solid var(--border-color);
    border-radius: 8px; padding: 10px 12px;
    transition: background 0.1s; color: var(--bs-body-color);
}
.artifact-card:hover { background: var(--border-color); }
.artifact-card-title { font-size: 0.82rem; font-weight: 500; margin-bottom: 2px; }
.artifact-card-date { font-size: 0.72rem; }

/* Branch tree panel */
.branch-tree-panel {
    width: 320px;
    flex-shrink: 0;
    border-left: 1px solid var(--border-color);
    background: var(--sidebar-bg);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transform: translateX(100%);
    transition: transform 0.25s ease;
    position: absolute; right: 0; top: 0; height: 100%;
    z-index: 89;
}
.branch-tree-panel.open { transform: translateX(0); }
@media (min-width: 1200px) {
    .branch-tree-panel { position: relative; transform: none; display: none; }
    .branch-tree-panel.open { display: flex; }
}
.branch-tree-panel-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 14px 14px 12px;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.85rem;
    flex-shrink: 0;
}
.branch-tree-panel-body { flex: 1; overflow-y: auto; padding: 8px 0; }

.branch-tree-entry {
    display: flex; align-items: flex-start; gap: 6px;
    padding: 8px 12px;
    text-decoration: none;
    color: var(--bs-body-color);
    border-radius: 6px;
    margin: 2px 6px;
    transition: background 0.12s;
    border-left: 2px solid transparent;
}
.branch-tree-entry:hover { background: var(--border-color); color: var(--bs-body-color); }
.branch-tree-entry--current {
    border-left-color: var(--bs-primary);
    background: color-mix(in srgb, var(--bs-primary) 10%, transparent);
}
.branch-tree-connector {
    font-family: monospace; font-size: 0.75rem;
    color: var(--text-muted); flex-shrink: 0;
    width: 12px; padding-top: 1px;
}
.branch-tree-info { flex: 1; min-width: 0; }
.branch-tree-title { font-size: 0.82rem; font-weight: 500; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.branch-tree-preview { font-size: 0.72rem; color: var(--text-muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; margin-top: 1px; }
.branch-tree-meta { font-size: 0.7rem; color: var(--text-muted); margin-top: 3px; }
.branch-tree-current-badge { font-size: 0.6rem; color: var(--bs-primary); flex-shrink: 0; margin-top: 2px; }

/* Branch ancestor breadcrumb */
.branch-breadcrumb {
    display: flex; align-items: center; flex-wrap: wrap; gap: 2px;
    padding: 6px 16px 4px;
    font-size: 0.75rem;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}
.branch-breadcrumb-item {
    color: var(--text-muted); text-decoration: none;
    padding: 1px 4px; border-radius: 3px;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 180px;
    transition: color 0.1s;
}
a.branch-breadcrumb-item:hover { color: var(--bs-body-color); }
.branch-breadcrumb-current { color: var(--bs-body-color); font-weight: 500; }
.branch-breadcrumb-sep { color: var(--text-muted); }

/* Inline branch indicator below messages */
.branch-indicator {
    display: flex; flex-wrap: wrap; gap: 6px;
    margin-left: 44px; margin-top: -4px; margin-bottom: 8px;
    padding: 0 16px 0 0;
}
.branch-indicator-link {
    display: inline-flex; align-items: center; gap: 4px;
    font-size: 0.72rem; color: var(--text-muted);
    text-decoration: none; padding: 2px 8px;
    border: 1px solid var(--border-color); border-radius: 99px;
    transition: color 0.12s, border-color 0.12s;
}
.branch-indicator-link:hover { color: var(--bs-body-color); border-color: var(--bs-body-color); }

/* Sidebar backdrop (mobile) */
.sidebar-backdrop {
    position: fixed; inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 99;
    opacity: 0; pointer-events: none;
    transition: opacity 0.25s;
}
.sidebar-backdrop.show { opacity: 1; pointer-events: all; }

/* ═══════════════════════════════════════ MOBILE ════ */
@media (max-width: 767.98px) {
    .sidebar {
        position: fixed; top: 0; left: 0; height: 100%;
        transform: translateX(-100%);
        z-index: 100;
    }
    .sidebar.sidebar-open { transform: translateX(0); }
    .chat-main { width: 100%; }
    .message-user .message-body { max-width: 88%; }
    .message-assistant .message-body { max-width: 95%; }

    /* Prevent iOS Safari from zooming in when the composer is focused.
       iOS zooms on inputs with font-size < 16px; setting it to 16px avoids that. */
    .composer-textarea { font-size: 16px; }
}

/* ═══════════════════════════════════════ ARTIFACT LIBRARY ════ */
.artifact-card-grid {
    transition: box-shadow 0.15s;
    color: var(--bs-body-color);
}
.artifact-card-grid:hover { box-shadow: 0 0 0 2px var(--accent); }