/* SNUH.AI shell — dark theme replicating the existing platform look. */

:root {
  /* Neutral grayscale — four elevation tiers for depth without blue tint */
  --bg: #141414;          /* L0 workspace — where content lives */
  --surface: #1c1c1c;     /* L1 chrome — topbar, sidebar, prompt strip */
  --panel: #232323;       /* L2 cards — meta strips, prompt box, side panel */
  --panel-2: #2a2a2a;     /* L3 nested — history, hover background */
  --panel-3: #323232;     /* L4 control — round buttons, strong hover */
  --border: #2c2c2c;
  --border-strong: #404040;
  --text: #ededed;
  --text-dim: #b3b3b3;
  --muted: #787878;
  --muted-2: #5c5c5c;

  --accent: #22d3ee;       /* cyan */
  --accent-2: #38bdf8;     /* sky */
  --accent-soft: rgba(34, 211, 238, 0.14);
  --accent-soft-2: rgba(34, 211, 238, 0.22);
  --accent-text: #67e8f9;

  --bad: #f87171;
  --bad-soft: rgba(248, 113, 113, 0.14);
  --good: #4ade80;
  --good-soft: rgba(74, 222, 128, 0.14);
  --warn: #fbbf24;
  --warn-soft: rgba(251, 191, 36, 0.14);

  --mono: ui-monospace, "JetBrains Mono", "Cascadia Code", "Consolas", monospace;
  --sans: -apple-system, "Segoe UI", "Pretendard", "Apple SD Gothic Neo", sans-serif;

  --topbar-h: 52px;
  --sidebar-w: 240px;
}

* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
html {
  /* iOS Safari/Chrome inflate text in landscape — disable so our
     own breakpoints control sizing. */
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}
body {
  font: 16px/1.55 var(--sans);
  color: var(--text);
  background: var(--bg);
  overflow: hidden;
}
button { font-family: inherit; }
a { color: inherit; text-decoration: none; }
[hidden] { display: none !important; }

/* ── App grid ─────────────────────────────────────────────────────────── */
.app {
  display: grid;
  /* `100dvh` reflows when the iOS soft-keyboard opens; `100vh` fallback
     stays correct on browsers that don't yet support dynamic viewports. */
  height: 100vh;
  height: 100dvh;
  grid-template-columns: var(--sidebar-w) 1fr;
  grid-template-rows: var(--topbar-h) 1fr;
  grid-template-areas:
    "topbar topbar"
    "sidebar content";
}
.app.sidebar-collapsed {
  grid-template-columns: 0 1fr;
}
.app.sidebar-collapsed .sidebar { display: none; }

/* ── Topbar ───────────────────────────────────────────────────────────── */
.topbar {
  grid-area: topbar;
  display: flex; align-items: center; gap: 14px;
  padding: 0 14px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.topbar .icon-btn {
  background: transparent;
  border: 0;
  color: var(--text-dim);
  width: 32px; height: 32px;
  border-radius: 6px;
  display: inline-flex; align-items: center; justify-content: center;
  cursor: pointer;
}
.topbar .icon-btn:hover { background: var(--panel-2); color: var(--text); }
.topbar .icon-btn svg { width: 18px; height: 18px; }

.brand {
  display: flex; align-items: center; gap: 10px;
  cursor: pointer;
}
.brand-name {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 0.5px;
  background: linear-gradient(180deg, #c4b5fd 0%, #818cf8 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  display: inline-flex; align-items: center; gap: 2px;
}
.brand-mark {
  display: inline-flex;
  width: 18px; height: 18px;
  background: linear-gradient(135deg, #f472b6 0%, #818cf8 50%, #22d3ee 100%);
  border-radius: 4px;
  align-items: center; justify-content: center;
  color: #fff;
  margin: 0 2px;
}
.brand-mark svg { width: 12px; height: 12px; }
.brand-sub {
  font-size: 13px;
  color: var(--text);
  font-weight: 600;
}
.brand-tag {
  margin-left: 6px;
  padding: 3px 8px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.8px;
  color: var(--text-dim);
  background: var(--panel-3, var(--panel-2));
  border: 1px solid var(--border);
  font-family: inherit;
  cursor: pointer;
  transition: background 0.12s, color 0.12s, border-color 0.12s;
}
.brand-tag:hover {
  color: var(--text);
  border-color: var(--border-strong, #404040);
}
/* While the graph is shown (ontology view), the tag glows so the user
   knows the next tap returns them to chat. */
.brand-tag[aria-pressed="true"] {
  color: var(--text);
  background: linear-gradient(180deg, rgba(196,181,253,0.18), rgba(129,140,248,0.18));
  border-color: rgba(129,140,248,0.45);
}

.topbar-spacer { flex: 1; }

.data-badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px;
  margin-left: 10px;
  border-radius: 999px;
  background: rgba(74, 222, 128, 0.10);
  color: #4ade80;
  font-size: 11.5px;
  font-weight: 600;
  border: 1px solid rgba(74, 222, 128, 0.28);
  user-select: none;
  cursor: help;
}
.data-badge svg { width: 13px; height: 13px; }

.user {
  text-align: right;
  line-height: 1.2;
}
.user-name { font-size: 13px; font-weight: 600; color: var(--text); }
.user-org { font-size: 11px; color: var(--muted); }

/* ── Sidebar ──────────────────────────────────────────────────────────── */
.sidebar {
  grid-area: sidebar;
  background: var(--surface);
  border-right: 1px solid var(--border);
  overflow-y: auto;
  padding: 6px 8px 16px;
}
.sidebar::-webkit-scrollbar { width: 8px; }
.sidebar::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 4px; }
.sidebar::-webkit-scrollbar-track { background: transparent; }

.nav-section {
  padding: 14px 10px 4px;
  font-size: 11px;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.nav-section:first-child { padding-top: 4px; }

.nav-item {
  display: flex; align-items: center; gap: 10px;
  padding: 7px 10px;
  border-radius: 6px;
  color: var(--text-dim);
  font-size: 13px;
  cursor: pointer;
  user-select: none;
  position: relative;
}
.nav-item:hover { background: var(--panel); color: var(--text); }
.nav-item.active {
  background: var(--accent-soft);
  color: var(--accent-text);
  font-weight: 600;
}
.nav-item.active svg { color: var(--accent); }
.nav-item svg {
  width: 16px; height: 16px;
  flex-shrink: 0;
  color: var(--muted);
}
.nav-item:hover svg { color: var(--text-dim); }

.nav-item .new-badge {
  margin-left: auto;
  font-size: 9.5px;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 1px 5px;
  border-radius: 3px;
  background: linear-gradient(135deg, #f472b6, #818cf8);
  color: #fff;
}

/* ── Content / views ──────────────────────────────────────────────────── */
.content {
  grid-area: content;
  overflow: hidden;
  background: var(--bg);
  display: flex; flex-direction: column;
  min-height: 0;
}
.view {
  flex: 1; min-height: 0;
  display: flex; flex-direction: column;
  overflow: hidden;
}

/* ── Page header (shared by all views) ────────────────────────────────── */
.page-header {
  display: flex; align-items: center; gap: 14px;
  padding: 16px 24px 16px;
}
.page-icon {
  width: 44px; height: 44px;
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--accent);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.page-icon svg { width: 22px; height: 22px; }
.page-title { font-size: 17px; font-weight: 700; margin: 0; }
.page-desc { font-size: 12.5px; color: var(--muted); margin: 2px 0 0; }

.quick-actions {
  display: flex; gap: 8px;
  padding: 4px 24px 16px;
}
.qa-btn {
  display: inline-flex; align-items: center; gap: 6px;
  background: transparent;
  border: 1px solid var(--border-strong);
  color: var(--text-dim);
  padding: 6px 12px;
  border-radius: 8px;
  font-size: 12.5px;
  cursor: pointer;
}
.qa-btn:hover { background: var(--panel-2); color: var(--text); border-color: var(--border-strong); }
.qa-btn svg { width: 14px; height: 14px; }

/* ── Hero (chat-style centered prompt) ────────────────────────────────── */
.hero {
  flex: 1;
  display: flex; flex-direction: column; justify-content: center; align-items: center;
  padding: 20px 24px 40px;
  min-height: 0;
}
.hero-title {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text);
}
.hero-sub {
  color: var(--muted);
  font-size: 13.5px;
  margin-bottom: 28px;
}
.prompt-box {
  width: 100%;
  max-width: 720px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 12px 14px;
  display: grid;
  grid-template-rows: 1fr auto;
  gap: 6px;
  min-height: 100px;
}
.prompt-box textarea {
  background: transparent;
  border: 0;
  color: var(--text);
  font: 13.5px var(--sans);
  resize: none;
  outline: none;
  min-height: 44px;
}
.prompt-box textarea::placeholder { color: var(--muted); }
.prompt-actions {
  display: flex; justify-content: space-between; align-items: center;
}
.prompt-actions .icon-btn {
  width: 30px; height: 30px;
  border-radius: 50%;
  background: var(--panel-3);
  border: 0;
  color: var(--text-dim);
  display: inline-flex; align-items: center; justify-content: center;
  cursor: pointer;
}
.prompt-actions .icon-btn svg { width: 16px; height: 16px; }
.prompt-actions .send-btn {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--panel-3);
  border: 0;
  color: var(--text-dim);
  display: inline-flex; align-items: center; justify-content: center;
  cursor: pointer;
}
.prompt-actions .send-btn:hover { background: var(--accent); color: #0a1620; }
.prompt-actions .send-btn svg { width: 16px; height: 16px; }
.hero-disclaimer {
  margin-top: 14px;
  font-size: 11.5px;
  color: var(--muted);
  text-align: center;
}

/* ── Stub view (coming soon placeholder) ──────────────────────────────── */
.stub-body {
  flex: 1;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center;
  padding: 40px 24px;
  color: var(--muted);
}
.stub-body .stub-icon {
  width: 64px; height: 64px;
  border-radius: 16px;
  background: var(--panel-2);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 18px;
  color: var(--muted);
}
.stub-body .stub-icon svg { width: 32px; height: 32px; }
.stub-body h2 { font-size: 16px; color: var(--text-dim); margin: 0 0 6px; font-weight: 600; }
.stub-body p { margin: 0; font-size: 13px; }

/* ── Ontology view ────────────────────────────────────────────────────── */
.ontology {
  display: grid;
  /* Graph | chat — roughly 50/50 split, but the graph never collapses
     below 480px so the dataset boxes stay legible on narrow viewports. */
  grid-template-columns: minmax(480px, 1fr) minmax(0, 1fr);
  flex: 1; min-height: 0;
  position: relative;
}

.ontology-main-col {
  display: grid;
  grid-template-rows: 1fr 0fr;
  min-height: 0; min-width: 0;
  transition: grid-template-rows 0.2s ease;
}
.ontology.has-selection .ontology-main-col {
  grid-template-rows: 1fr minmax(180px, 34%);
}

.ontology-main {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--bg);
  border-top: 1px solid var(--border);
  min-height: 0; min-width: 0;
}
.graph-viewport {
  /* Scrollable region around the cytoscape canvas — content is sized to
     its natural extent (no fit-to-window) so that label text stays
     readable. Vertical overflow scrolls; the toolbar stays pinned. */
  flex: 1;
  min-height: 0;
  overflow: auto;
  position: relative;
}
.graph-viewport::-webkit-scrollbar { width: 10px; height: 10px; }
.graph-viewport::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: 5px;
}
.graph-viewport::-webkit-scrollbar-track { background: transparent; }
.graph-canvas {
  /* width/height assigned by JS to fit the preset layout's natural size. */
  position: relative;
}
/* Top toolbar — horizontal dataset chips that double as filter/highlight. */
.graph-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.graph-toolbar .toolbar-label {
  font-size: 10px;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-right: 4px;
}
.ds-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font: 600 11.5px var(--sans);
  padding: 4px 10px;
  border-radius: 999px;
  background: transparent;
  cursor: pointer;
  letter-spacing: 0.02em;
  transition: background 0.12s ease, border-color 0.12s ease;
  /* Per-chip color comes from inline style (--c). */
  border: 1px solid color-mix(in srgb, var(--c, var(--border-strong)) 50%, transparent);
  color: var(--c, var(--text-dim));
}
.ds-chip:hover {
  background: color-mix(in srgb, var(--c, var(--text-dim)) 14%, transparent);
}
.ds-chip.active {
  background: color-mix(in srgb, var(--c, var(--text-dim)) 22%, transparent);
  border-color: var(--c, var(--text-dim));
}
.ds-chip .ds-dot {
  width: 8px; height: 8px;
  border-radius: 2px;
  background: var(--c, var(--text-dim));
  flex-shrink: 0;
}
.graph-toolbar .toolbar-spacer { flex: 1; }
.toolbar-icon-btn {
  width: 28px; height: 28px;
  border-radius: 6px;
  background: transparent;
  border: 1px solid var(--border-strong);
  color: var(--text-dim);
  cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.toolbar-icon-btn:hover { background: var(--panel-2); color: var(--text); }
.toolbar-icon-btn svg { width: 15px; height: 15px; }

/* Bottom details panel (shown on node selection) */
.ontology-details {
  border-top: 1px solid var(--border);
  background: var(--panel);
  overflow: auto;
  padding: 14px 20px 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-height: 0;
}
.ontology-details .det-head {
  display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap;
}
.ontology-details .side-type {
  font-size: 10.5px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  flex-shrink: 0;
}
.ontology-details h3 {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
}
.ontology-details .side-desc {
  color: var(--text-dim);
  font-size: 12.5px;
  margin: 0;
  line-height: 1.55;
}
.ontology-details .det-body {
  display: flex;
  gap: 22px;
  align-items: flex-start;
  flex-wrap: wrap;
  margin-top: 4px;
}
.ontology-details .side-section {
  flex: 1 1 180px;
  min-width: 160px;
}
.ontology-details .side-label {
  font-size: 10.5px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 6px;
}
.ontology-details .side-list { display: flex; flex-direction: column; gap: 3px; }
.ontology-details .side-list .side-item {
  color: var(--text-dim);
  padding: 4px 8px;
  border-radius: 4px;
  cursor: pointer;
  font: 12px var(--mono);
  display: flex; align-items: center; gap: 6px;
}
.ontology-details .side-list .side-item:hover {
  background: var(--accent-soft);
  color: var(--accent-text);
}
.ontology-details .ask-btn {
  align-self: flex-start;
  background: var(--accent); color: #0a1620;
  border: 0; padding: 7px 14px;
  font-weight: 700;
  font-size: 12px;
  border-radius: 8px;
  cursor: pointer;
  display: inline-flex; align-items: center; gap: 6px;
  flex-shrink: 0;
  margin-left: auto;
}
.ontology-details .ask-btn:hover { background: var(--accent-2); }
.ontology-details .ask-btn svg { width: 14px; height: 14px; }

/* ── Right chat panel (Ontology) ──────────────────────────────────────── */
.ontology-chat {
  border-left: 1px solid var(--border);
  border-top: 1px solid var(--border);
  background: var(--surface);
  display: grid;
  grid-template-rows: auto auto 1fr auto;
  min-height: 0;
  overflow: hidden;
}
.chat-head {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 8px;
  color: var(--text);
}
.chat-head svg { width: 15px; height: 15px; color: var(--accent); }
.chat-title {
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.02em;
}
.chat-suggested {
  padding: 10px 14px 4px;
}
.suggested-chips {
  display: flex; flex-wrap: wrap; gap: 6px;
}
.suggested-chips .chip {
  font-size: 13.5px;
  padding: 5px 11px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-text);
  border: 1px solid rgba(34, 211, 238, 0.30);
  cursor: pointer;
  font-family: inherit;
  transition: background 0.12s, border-color 0.12s, color 0.12s;
}
.suggested-chips .chip:hover {
  background: var(--accent-soft-2);
  color: #a5f3fc;
  border-color: rgba(34, 211, 238, 0.55);
}
.chat-messages {
  overflow: auto;
  padding: 12px 14px;
  min-height: 0;
  display: flex; flex-direction: column; gap: 10px;
}
.chat-messages:empty::before {
  content: "데이터에 대한 질문을 입력하거나, 그래프 노드를 선택해 'Ask' 버튼을 눌러 보세요.";
  color: var(--muted);
  font-size: 11.5px;
  line-height: 1.55;
  display: block;
}
.chat-msg {
  display: flex; flex-direction: column; gap: 3px;
  font-size: 12.5px;
  line-height: 1.55;
}
.chat-msg-role {
  font-size: 10px;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.chat-msg-body {
  padding: 8px 11px;
  border-radius: 10px;
  background: var(--panel);
  color: var(--text);
  white-space: pre-wrap;
  word-wrap: break-word;
  border: 1px solid var(--border);
}
.chat-msg-user .chat-msg-body {
  background: var(--accent-soft);
  border-color: transparent;
  color: var(--text);
}
.chat-msg-assistant .chat-msg-body { background: var(--panel-2); }
.chat-msg-body.streaming::after {
  content: "▋";
  color: var(--accent);
  margin-left: 2px;
  animation: cursor-blink 1s steps(2, end) infinite;
}
.chat-msg-body.error { color: var(--bad); border-color: var(--bad-soft); background: var(--bad-soft); }
@keyframes cursor-blink {
  50% { opacity: 0; }
}

/* Markdown body rendering — compact for chat context (not document-style).
   Spacing is tightened so each block doesn't dominate the bubble. */
.chat-msg-body > :first-child { margin-top: 0; }
.chat-msg-body > :last-child  { margin-bottom: 0; }
.chat-msg-body p { margin: 0 0 6px; }
.chat-msg-body h1,
.chat-msg-body h2,
.chat-msg-body h3,
.chat-msg-body h4 {
  margin: 10px 0 4px;
  font-weight: 700;
  line-height: 1.3;
}
.chat-msg-body h1 { font-size: 14.5px; }
.chat-msg-body h2 { font-size: 13.5px; color: var(--text); }
.chat-msg-body h3 { font-size: 12.5px; color: var(--text-dim); }
.chat-msg-body h4 { font-size: 12px;   color: var(--text-dim); }
.chat-msg-body strong { color: var(--text); font-weight: 700; }
.chat-msg-body em     { color: var(--text-dim); font-style: italic; }
.chat-msg-body ul,
.chat-msg-body ol {
  margin: 4px 0 6px;
  padding-left: 22px;
}
.chat-msg-body li { margin: 2px 0; }
.chat-msg-body li > p { margin: 0; }
/* Accent-colored markers so bullets read as bullets against the dark
   bubble background (default browser markers blend in). */
.chat-msg-body ul > li::marker {
  color: #a5b4fc;
  font-size: 1.15em;
}
.chat-msg-body ol > li::marker {
  color: #a5b4fc;
  font-weight: 700;
}
.chat-msg-body blockquote {
  margin: 6px 0;
  padding: 4px 10px;
  border-left: 3px solid var(--accent);
  background: rgba(34, 211, 238, 0.06);
  color: var(--text-dim);
  border-radius: 0 4px 4px 0;
}
.chat-msg-body blockquote > :first-child { margin-top: 0; }
.chat-msg-body blockquote > :last-child  { margin-bottom: 0; }
.chat-msg-body code {
  font-family: var(--mono);
  font-size: 0.92em;
  padding: 1px 5px;
  border-radius: 4px;
  background: var(--panel-3);
  color: var(--accent-text);
}
.chat-msg-body pre {
  margin: 6px 0;
  padding: 8px 10px;
  background: #0f0f0f;
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: auto;
  font-family: var(--mono);
  font-size: 11.5px;
  line-height: 1.5;
}
.chat-msg-body pre code {
  padding: 0;
  background: transparent;
  color: var(--text);
  font-size: inherit;
}
.chat-msg-body hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 10px 0;
}
.chat-msg-body a {
  color: var(--accent-text);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}
.chat-msg-body a:hover { color: var(--accent); }

/* GFM tables — compact, tight spacing, scrollable on overflow. */
.chat-msg-body table {
  border-collapse: collapse;
  margin: 6px 0;
  font-size: 11.5px;
  display: block;
  overflow-x: auto;
  max-width: 100%;
}
.chat-msg-body table th,
.chat-msg-body table td {
  padding: 4px 8px;
  border: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}
.chat-msg-body table th {
  background: var(--panel-3);
  color: var(--text);
  font-weight: 700;
  white-space: nowrap;
}
.chat-msg-body table td { color: var(--text-dim); }
.chat-msg-body table tr:nth-child(even) td { background: rgba(255, 255, 255, 0.02); }

/* Collapsible reasoning disclosure (DeepSeek-style <think> blocks) */
.chat-think {
  font-size: 11.5px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 4px 10px;
  margin-bottom: 2px;
}
.chat-think summary {
  cursor: pointer;
  color: var(--muted);
  font-weight: 600;
  list-style: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 2px 0;
  user-select: none;
}
.chat-think summary::-webkit-details-marker { display: none; }
.chat-think summary::before {
  content: "›";
  display: inline-block;
  color: var(--accent);
  font-weight: 700;
  transition: transform 0.15s ease;
}
.chat-think[open] summary::before { transform: rotate(90deg); }
.chat-think-body {
  margin-top: 6px;
  padding: 7px 9px;
  background: var(--panel-2);
  border-radius: 6px;
  color: var(--text-dim);
  white-space: pre-wrap;
  word-wrap: break-word;
  font-size: 11.5px;
  line-height: 1.55;
  max-height: 240px;
  overflow: auto;
}

/* Tool-call group — one collapsible per assistant turn. Inside the group
   body, individual `.chat-tool` blocks stack vertically and each is
   independently expandable. Two-level disclosure keeps the bubble compact
   even when 4+ tool calls fire (Claude-Code-style summary). */
.chat-toolgroup {
  font-size: 11.5px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 4px 10px;
  margin-bottom: 2px;
}
.chat-toolgroup summary {
  cursor: pointer;
  color: var(--text-dim);
  font-weight: 600;
  list-style: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 2px 0;
  user-select: none;
}
.chat-toolgroup summary::-webkit-details-marker { display: none; }
.chat-toolgroup summary::before {
  content: "›";
  display: inline-block;
  color: var(--accent);
  font-weight: 700;
  transition: transform 0.15s ease;
}
.chat-toolgroup[open] summary::before { transform: rotate(90deg); }
.chat-toolgroup-body {
  margin-top: 6px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

/* In-progress indicator — hourglass that flips while any tool in the
   group hasn't reported its result yet (or while the individual tool
   is still streaming). */
.chat-toolgroup.is-loading > summary::after,
.chat-tool.is-loading > summary::after {
  content: "⏳";
  margin-left: 6px;
  display: inline-block;
  animation: hourglass-tip 1.4s ease-in-out infinite;
  color: var(--accent);
}
@keyframes hourglass-tip {
  0%, 45%   { transform: rotate(0deg); }
  55%, 100% { transform: rotate(180deg); }
}

/* Individual tool — shown nested inside `.chat-toolgroup-body`. */
.chat-tool {
  font-size: 11.5px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 4px 10px;
}
.chat-tool summary {
  cursor: pointer;
  color: var(--text-dim);
  font-weight: 600;
  list-style: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 2px 0;
  user-select: none;
}
.chat-tool summary::-webkit-details-marker { display: none; }
.chat-tool summary::before {
  content: "›";
  display: inline-block;
  color: var(--accent);
  font-weight: 700;
  transition: transform 0.15s ease;
}
.chat-tool[open] summary::before { transform: rotate(90deg); }
.chat-tool-sql {
  margin: 6px 0 0;
  padding: 8px 10px;
  background: #0f0f0f;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--accent-text);
  font: 11.5px var(--mono);
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 220px;
  overflow: auto;
}
.chat-tool-sql:empty { display: none; }
.chat-tool-result { margin-top: 6px; }
.chat-tool-meta {
  font-size: 11px;
  color: var(--muted);
  margin-bottom: 4px;
  font-family: var(--mono);
}
.chat-tool-error {
  color: var(--bad);
  background: var(--bad-soft);
  border: 1px solid rgba(248, 113, 113, 0.25);
  border-radius: 6px;
  padding: 6px 8px;
  font-family: var(--mono);
  font-size: 11px;
  white-space: pre-wrap;
}
.chat-tool-more {
  margin-top: 4px;
  font-size: 10.5px;
  color: var(--muted);
  text-align: right;
  font-family: var(--mono);
}
table.chat-tool-grid {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--mono);
  font-size: 10.5px;
  color: var(--text-dim);
  display: block;
  overflow: auto;
  max-height: 260px;
  border: 1px solid var(--border);
  border-radius: 6px;
}
table.chat-tool-grid th, table.chat-tool-grid td {
  border-bottom: 1px solid var(--border);
  border-right: 1px solid var(--border);
  padding: 3px 8px;
  text-align: left;
  white-space: nowrap;
  vertical-align: top;
  max-width: 260px;
  overflow: hidden;
  text-overflow: ellipsis;
}
table.chat-tool-grid th {
  position: sticky; top: 0;
  background: var(--panel-2);
  color: var(--text);
  font-weight: 600;
}
table.chat-tool-grid td.num { text-align: right; color: var(--accent-text); }
table.chat-tool-grid td.nul { color: var(--muted); font-style: italic; }

/* describe_catalog payload preview */
.chat-tool-tablist {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 6px 8px;
  background: var(--panel-2);
  border-radius: 6px;
  font-family: var(--mono);
  font-size: 11px;
  max-height: 220px;
  overflow: auto;
}
.chat-tool-tablist-row {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 2px 0;
  border-bottom: 1px dashed var(--border);
}
.chat-tool-tablist-row:last-child { border-bottom: 0; }
.chat-tool-tablist-name {
  color: var(--accent-text);
  font-weight: 600;
  flex-shrink: 0;
}
.chat-tool-tablist-desc {
  color: var(--muted);
  font-family: var(--sans);
  font-size: 10.5px;
}
.chat-tool-tag {
  font-size: 9.5px;
  padding: 0 5px;
  border-radius: 3px;
  background: var(--warn-soft);
  color: var(--warn);
  font-family: var(--sans);
  letter-spacing: 0.04em;
}

/* ── Mobile (≤ 768px) ─────────────────────────────────────────────────── */
/*
 * Mobile layout shows only the chat experience (suggested chips +
 * messages + input). All navigation chrome — sidebar, hamburger toggle,
 * menu, page header, ontology graph, dataset toolbar — is hidden.
 */
@media (max-width: 768px) {
  /* iOS Safari/Chrome auto-zoom into any form field whose computed
     font-size is < 16px, scaling the whole page. Force every text-
     input control to 16px so the layout stays put while typing. */
  textarea,
  input:not([type="checkbox"]):not([type="radio"]):not([type="hidden"]):not([type="range"]):not([type="file"]):not([type="color"]),
  select {
    font-size: 16px !important;
  }

  /* Larger base font on phones — the desktop layout is dense, so
     phones get an extra step up. Most secondary sizes (chat, chips,
     headers below) also get a small bump via the rules further down. */
  body { font-size: 17px; line-height: 1.55; }
  .chat-msg-body { font-size: 15px; }
  .chat-msg-body h1 { font-size: 16.5px; }
  .chat-msg-body h2 { font-size: 15.5px; }
  .chat-msg-body h3 { font-size: 14.5px; }
  /* Bullet/numbered list text — one step smaller than paragraph so
     dense bullet lists stay scannable on a phone. */
  .chat-msg-body li { font-size: 13.5px; }
  .ontology-disclaimer { font-size: 12.5px; }

  /* Topbar — keep the menu icons visible (purely decorative on mobile;
     the sidebar is hidden so taps do nothing useful but the affordance
     matches the desktop look). Drop only the wide chrome. */
  .topbar { gap: 8px; padding: 0 12px; }
  .data-badge,
  .user,
  .brand-sub { display: none !important; }

  /* Sidebar removed entirely (no overlay either). */
  .app, .app.sidebar-collapsed { grid-template-columns: 0 1fr; }
  .sidebar { display: none !important; }

  /* Ontology view on phones: chat fills the surface by default, with a
     topbar toggle (#graph-mobile-toggle) that flips to the graph view.
     When `.ontology.show-graph` is set, swap visibility. */
  #view-ontology .page-header { display: none; }
  .ontology {
    grid-template-columns: 1fr !important;
  }
  .ontology-main-col { display: none; }
  .ontology-chat {
    border-left: none;
    border-top: 1px solid var(--border);
  }
  .ontology.show-graph .ontology-main-col {
    display: flex !important;
  }
  .ontology.show-graph .ontology-chat {
    display: none !important;
  }
  .chat-head { display: none; }  /* "데이터 질문" header is redundant on phone */

  /* Hero view (chat mode) — tighten if the user lands there. */
  .hero { padding: 16px 16px 24px; }
  .hero-title { font-size: 18px; }
  .hero-sub { font-size: 12.5px; margin-bottom: 18px; }
  .prompt-box { max-width: 100%; }
  .page-header { padding: 12px 14px; gap: 10px; }
  .page-icon { width: 36px; height: 36px; border-radius: 8px; }
  .page-icon svg { width: 18px; height: 18px; }
  .page-title { font-size: 15px; }
  .page-desc { font-size: 11.5px; }
  .quick-actions { padding: 0 14px 12px; flex-wrap: wrap; }

  /* Chat panel — fill the viewport on phones. */
  .chat-suggested { padding: 10px 12px 4px; }
  .chat-messages { padding: 10px 12px; }
  .chat-input {
    padding: 8px 12px max(12px, env(safe-area-inset-bottom));
  }

  /* iOS Safari auto-zooms into form fields whose font-size is < 16px.
     Bump the textarea to 16px on phones so the layout doesn't get
     re-scaled (and the chips/send button stop being clipped on focus). */
  .prompt-box-on textarea,
  .prompt-box textarea {
    font-size: 16px;
  }
  .prompt-box-on { min-height: 64px; }
}
.chat-input {
  padding: 10px 14px 14px;
  border-top: 1px solid var(--border);
  background: var(--surface);
}
.prompt-box-on {
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 10px 12px;
  display: grid;
  grid-template-rows: 1fr auto;
  gap: 4px;
  min-height: 80px;
}
.prompt-box-on textarea {
  background: transparent;
  border: 0;
  color: var(--text);
  font: 13px var(--sans);
  resize: none;
  outline: none;
  min-height: 36px;
}
.prompt-box-on textarea::placeholder { color: var(--muted); }
.prompt-box-on .prompt-actions {
  display: flex; justify-content: space-between; align-items: center;
}
.prompt-box-on .prompt-actions .icon-btn,
.prompt-box-on .prompt-actions .send-btn {
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--panel-3); color: var(--text-dim);
  border: 0; cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center;
}
.prompt-box-on .prompt-actions .icon-btn svg,
.prompt-box-on .prompt-actions .send-btn svg { width: 15px; height: 15px; }
.prompt-box-on .prompt-actions .send-btn:hover {
  background: var(--accent); color: #0a1620;
}
.ontology-disclaimer {
  margin-top: 8px;
  font-size: 10.5px;
  color: var(--muted);
  text-align: center;
  line-height: 1.45;
}

/* Toast */
.toast {
  position: fixed;
  bottom: 24px; left: 50%; transform: translateX(-50%);
  background: var(--panel-3);
  color: var(--text);
  padding: 10px 16px;
  border-radius: 8px;
  border: 1px solid var(--border-strong);
  font-size: 13px;
  z-index: 1000;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
  max-width: 560px;
  animation: toastIn 0.2s ease-out;
}
@keyframes toastIn {
  from { opacity: 0; transform: translate(-50%, 8px); }
  to   { opacity: 1; transform: translate(-50%, 0); }
}

/* ── (legacy) Data Foundation SQL viewer styles — kept unused for now ── */
.foundation {
  display: grid;
  grid-template-rows: auto 1fr;
  flex: 1; min-height: 0;
  overflow: hidden;
}
.foundation-toolbar {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 14px;
  background: var(--panel-2);
  border-bottom: 1px solid var(--border);
}
.foundation-toolbar input.cfg, .foundation-toolbar button.cfg {
  font: 12px var(--mono);
  padding: 5px 10px;
  border: 1px solid var(--border-strong); border-radius: 6px;
  background: var(--panel); color: var(--text);
}
.foundation-toolbar input.cfg::placeholder { color: var(--muted); }
.foundation-toolbar input#base { width: 260px; }
.foundation-toolbar input#token { width: 220px; }
.foundation-toolbar button.cfg {
  cursor: pointer;
  background: var(--accent-soft); color: var(--accent-text);
  border-color: transparent;
  font-weight: 600;
}
.foundation-toolbar button.cfg:hover { background: var(--accent-soft-2); }
.foundation-toolbar .conn {
  margin-left: auto;
  display: flex; align-items: center; gap: 8px;
  font-size: 12px; color: var(--muted);
}
.foundation-toolbar .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--muted-2);
}
.foundation-toolbar .dot.ok {
  background: var(--good);
  box-shadow: 0 0 8px rgba(74, 222, 128, 0.5);
}
.foundation-toolbar .dot.bad {
  background: var(--bad);
  box-shadow: 0 0 8px rgba(248, 113, 113, 0.5);
}

.foundation-body {
  display: grid;
  grid-template-columns: 280px 1fr;
  min-height: 0;
}

aside.catalog {
  border-right: 1px solid var(--border);
  background: var(--panel);
  overflow: auto;
  padding: 4px 0;
}
aside .ds {
  padding: 10px 12px 6px;
  font-size: 10.5px;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-top: 1px solid var(--border);
}
aside .ds:first-child { border-top: 0; }
aside .tbl {
  padding: 6px 12px 6px 22px;
  cursor: pointer;
  display: flex; align-items: center; gap: 6px;
  border-left: 3px solid transparent;
  color: var(--text-dim);
}
aside .tbl:hover { background: var(--panel-2); color: var(--text); }
aside .tbl.active {
  background: var(--accent-soft);
  border-left-color: var(--accent);
  color: var(--accent-text);
}
aside .tbl .name { font-family: var(--mono); font-size: 12px; }
aside .tbl .badge {
  font-size: 10px; padding: 1px 5px; border-radius: 3px;
  background: var(--warn-soft); color: var(--warn);
  margin-left: auto;
}
aside .cols {
  display: none; padding: 4px 12px 8px 28px;
  font-family: var(--mono); font-size: 11px;
  background: var(--panel-2);
  border-left: 3px solid var(--accent);
  color: var(--text-dim);
}
aside .tbl.open + .cols { display: block; }
aside .cols .col { display: flex; justify-content: space-between; padding: 1px 0; }
aside .cols .col .ty { color: var(--muted); font-size: 10.5px; }

section.work {
  display: grid;
  grid-template-rows: minmax(160px, 35%) 8px 1fr;
  min-width: 0; min-height: 0;
}
.editor-wrap {
  display: grid; grid-template-rows: auto 1fr auto;
  min-height: 0;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
}
.meta {
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 8px;
  font-size: 12px;
  background: var(--panel-2);
  flex-wrap: wrap;
}
.meta .pill {
  padding: 2px 7px; border-radius: 999px;
  background: var(--accent-soft); color: var(--accent-text);
  font-family: var(--mono); font-size: 11px;
}
.meta .warn-pill { background: var(--warn-soft); color: var(--warn); }
.meta .desc { color: var(--muted); }
.meta button {
  margin-left: auto;
  font-size: 11px;
  padding: 4px 10px;
  background: var(--panel);
  color: var(--text-dim);
  border: 1px solid var(--border-strong);
  border-radius: 4px;
  cursor: pointer;
}
.meta button:hover { background: var(--panel-3); color: var(--text); }

.CodeMirror { height: 100%; font-family: var(--mono); font-size: 13px; background: var(--panel) !important; }
.CodeMirror-gutters { background: var(--panel) !important; border-right: 1px solid var(--border) !important; }
.CodeMirror-cursor { border-left: 1px solid var(--text) !important; }

.toolbar {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 12px;
  border-top: 1px solid var(--border);
  background: var(--panel-2);
}
.toolbar button.run {
  background: var(--accent); color: #0a1620; border: 0;
  padding: 6px 16px; border-radius: 6px;
  font-weight: 700; cursor: pointer;
  font-size: 12px;
  display: inline-flex; align-items: center; gap: 6px;
}
.toolbar button.run:hover { background: var(--accent-2); }
.toolbar button.run:disabled { opacity: 0.5; cursor: wait; }
.toolbar button.run svg { width: 14px; height: 14px; }
.toolbar label { color: var(--muted); font-size: 11.5px; display: inline-flex; align-items: center; gap: 4px; }
.toolbar input.num {
  width: 70px; font: 12px var(--mono);
  padding: 4px 6px;
  background: var(--panel); color: var(--text);
  border: 1px solid var(--border-strong); border-radius: 4px;
}
.toolbar .hint { margin-left: auto; color: var(--muted); font-size: 11px; font-family: var(--mono); }

.splitter {
  background: var(--border);
  cursor: row-resize;
}
.splitter:hover { background: var(--border-strong); }

.results {
  display: grid; grid-template-rows: auto 1fr auto;
  min-height: 0; background: var(--panel);
}
.status {
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  display: flex; gap: 12px; align-items: center; flex-wrap: wrap;
  font-size: 12px;
  background: var(--panel-2);
}
.status .stbadge {
  padding: 2px 8px; border-radius: 4px;
  font-family: var(--mono); font-size: 11px; font-weight: 600;
  background: var(--border); color: var(--muted);
  text-transform: uppercase; letter-spacing: 0.04em;
}
.status .stbadge.succeeded { background: var(--good-soft); color: var(--good); }
.status .stbadge.failed,
.status .stbadge.rejected { background: var(--bad-soft); color: var(--bad); }
.status .stbadge.timeout { background: var(--warn-soft); color: var(--warn); }
.grid-wrap { overflow: auto; background: var(--panel); }
table.grid {
  border-collapse: collapse;
  font-family: var(--mono); font-size: 12px;
  width: 100%;
  color: var(--text-dim);
}
table.grid th, table.grid td {
  border-bottom: 1px solid var(--border);
  border-right: 1px solid var(--border);
  padding: 5px 10px;
  text-align: left;
  white-space: nowrap;
  vertical-align: top;
  max-width: 480px;
  overflow: hidden; text-overflow: ellipsis;
}
table.grid th {
  position: sticky; top: 0;
  background: var(--panel-2);
  color: var(--text);
  font-weight: 600;
  z-index: 1;
}
table.grid td.num { text-align: right; color: var(--accent-text); }
table.grid td.nul { color: var(--muted); font-style: italic; }
table.grid tr:hover td { background: rgba(34, 211, 238, 0.04); }
.err {
  padding: 16px;
  color: var(--bad);
  font-family: var(--mono); font-size: 12px;
  white-space: pre-wrap;
}

.history {
  border-top: 1px solid var(--border);
  background: var(--panel-2);
  max-height: 110px; overflow: auto;
}
.history-header {
  font-size: 11px; color: var(--muted);
  padding: 4px 12px;
  text-transform: uppercase; letter-spacing: 0.05em;
}
.history-item {
  padding: 4px 12px;
  font: 11px var(--mono);
  cursor: pointer;
  color: var(--muted);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.history-item:hover { background: var(--accent-soft); color: var(--accent-text); }

/* ── Topbar user menu dropdown ───────────────────────────────────────── */
.user-menu-wrap { position: relative; }
.user-menu {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  min-width: 160px;
  background: var(--panel);
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  padding: 4px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.45);
  z-index: 50;
}
.user-menu-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: 6px;
  color: var(--text);
  font-size: 13px;
  cursor: pointer;
  text-decoration: none;
  background: transparent;
  border: 0;
  font-family: inherit;
  width: 100%;
  text-align: left;
}
.user-menu-item:hover { background: var(--panel-2); }
.user-menu-item svg { width: 16px; height: 16px; color: var(--text-dim); }

/* ── Drawer (chat history viewer) ──────────────────────────────────── */
.drawer-backdrop {
  position: fixed; inset: 0;
  background: rgba(0, 0, 0, 0.55);
  z-index: 90;
  animation: drawer-fade 0.15s ease-out;
}
.drawer {
  position: fixed; top: 0; right: 0; bottom: 0;
  width: min(440px, 92vw);
  background: var(--surface);
  border-left: 1px solid var(--border);
  z-index: 91;
  display: flex; flex-direction: column;
  animation: drawer-slide 0.18s ease-out;
}
.drawer-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
}
.drawer-head h2 { margin: 0; font-size: 16px; font-weight: 700; }
.drawer-body { flex: 1; overflow-y: auto; padding: 8px 12px 16px; }
.drawer-empty { padding: 24px 8px; color: var(--muted); font-size: 13px; text-align: center; }
.history-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  align-items: start;
  padding: 10px 12px;
  border-radius: 8px;
  cursor: pointer;
  border: 1px solid transparent;
  margin-bottom: 4px;
}
.history-item:hover { background: var(--panel-2); border-color: var(--border); }
.history-item.current { background: var(--accent-soft); border-color: rgba(34, 211, 238, 0.30); }
.history-item-main { min-width: 0; }
.history-item-title {
  color: var(--text);
  font-size: 13.5px;
  font-weight: 500;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.history-item-meta {
  color: var(--muted);
  font-size: 11.5px;
  margin-top: 2px;
}
.history-delete {
  background: transparent;
  border: 0;
  color: var(--muted);
  cursor: pointer;
  width: 26px; height: 26px;
  border-radius: 4px;
  display: inline-flex; align-items: center; justify-content: center;
  opacity: 0;
  transition: opacity 0.12s, color 0.12s;
}
.history-item:hover .history-delete { opacity: 1; }
.history-delete:hover { color: #f87171; background: rgba(248, 113, 113, 0.12); }
.history-delete svg { width: 14px; height: 14px; }
@keyframes drawer-fade { from { opacity: 0; } to { opacity: 1; } }
@keyframes drawer-slide { from { transform: translateX(20px); opacity: 0; } to { transform: translateX(0); opacity: 1; } }