/* Luna Cockpit v3 — purple #a855f7, dark, no external deps */

:root {
  --bg: #0a0a0f;
  --bg-2: #11111b;
  --bg-3: #1a1a26;
  --bg-4: #232336;
  --line: #2a2a3e;
  --text: #e8e8f0;
  --text-muted: #9090a8;
  --text-dim: #6a6a85;
  --accent: #a855f7;
  --accent-2: #c084fc;
  --accent-dark: #7c3aed;
  --accent-rgb: 168, 85, 247;
  --success: #10b981;
  --warn: #f59e0b;
  --danger: #ef4444;
  --info: #38bdf8;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.2);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.3);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.5);
  --radius: 8px;
  --radius-lg: 12px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Inter", "Helvetica Neue", Arial, sans-serif;
  font-size: 15px;
  line-height: 1.5;
  min-height: 100vh;
}
a { color: var(--accent-2); text-decoration: none; }
a:hover { color: var(--accent); }
button { font: inherit; cursor: pointer; border: none; background: transparent; color: inherit; }

.cockpit {
  max-width: 1280px;
  margin: 0 auto;
  padding: 1.5rem 1rem 6rem;
  min-height: 100vh;
}

/* ─── Topbar ────────────────────────────────────────────────────── */
.topbar { display: flex; align-items: center; gap: 1rem; padding-bottom: 1.5rem; border-bottom: 1px solid var(--line); margin-bottom: 1.5rem; }
.brand { display: flex; align-items: center; gap: 0.75rem; }
.brand-icon {
  width: 40px; height: 40px;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: white; font-weight: 700; font-size: 22px;
  border-radius: var(--radius);
  display: grid; place-items: center;
  box-shadow: var(--shadow-md);
}
.brand-text { display: flex; flex-direction: column; }
.brand-title { font-size: 1.2rem; font-weight: 600; }
.brand-title small { color: var(--text-muted); font-weight: 400; margin-left: 0.25rem; }
.brand-sub { font-size: 0.8rem; color: var(--text-muted); }
.spacer { flex: 1; }
.auth-state { display: flex; align-items: center; gap: 0.75rem; }
.auth-user { color: var(--text-muted); font-size: 0.85rem; }

/* ─── Status block ─────────────────────────────────────────────── */
.status-block {
  background: linear-gradient(135deg, rgba(var(--accent-rgb),0.08), rgba(var(--accent-rgb),0.02));
  border: 1px solid rgba(var(--accent-rgb), 0.25);
  border-radius: var(--radius-lg);
  padding: 1rem 1.25rem;
  margin-bottom: 1.5rem;
}
.status-title { font-size: 0.85rem; color: var(--accent-2); font-weight: 600; margin: 0 0 0.5rem; text-transform: uppercase; letter-spacing: 0.04em; }
.status-summary { font-size: 0.95rem; color: var(--text); }
.status-summary .dim { color: var(--text-muted); }

/* ─── Top-level Space-Tabs ─────────────────────────────────────── */
.space-tabs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.5rem;
  background: var(--bg-2);
  padding: 0.5rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  margin-bottom: 1.5rem;
}
.space-tab {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem;
  border-radius: var(--radius);
  color: var(--text-muted);
  transition: all 0.15s;
  font-size: 0.95rem;
  font-weight: 500;
}
.space-tab[aria-selected="true"] {
  background: linear-gradient(135deg, rgba(var(--accent-rgb),0.18), rgba(var(--accent-rgb),0.05));
  color: var(--accent-2);
  box-shadow: inset 0 0 0 1px rgba(var(--accent-rgb), 0.4);
}
.space-tab:hover { background: var(--bg-3); color: var(--text); }
.space-tab[aria-selected="true"]:hover { color: var(--accent-2); }
.space-icon { font-size: 1.1rem; }

/* Each space-section is hidden unless data-active=true */
.space { display: none; }
.space[data-active="true"] { display: block; }
.space-intro { margin-bottom: 1.25rem; }
.space-intro h2 { margin: 0 0 0.4rem; font-size: 1.15rem; }
.space-intro p { margin: 0; color: var(--text-muted); font-size: 0.9rem; }

/* ─── Folder tabs (Dokumente) ──────────────────────────────────── */
.folder-tabs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.5rem;
  background: var(--bg-2);
  padding: 0.5rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  margin-bottom: 1rem;
}
.folder-tab {
  display: flex; flex-direction: column; align-items: center; gap: 0.25rem;
  padding: 0.75rem; border-radius: var(--radius);
  color: var(--text-muted);
  transition: background 0.15s, color 0.15s;
}
.folder-tab[aria-selected="true"] {
  background: rgba(var(--accent-rgb), 0.12);
  color: var(--text);
  box-shadow: inset 0 -2px 0 var(--accent);
}
.folder-tab:hover { background: var(--bg-3); color: var(--text); }
.folder-icon { font-size: 1.25rem; }
.folder-label { font-size: 0.85rem; font-weight: 500; }
.folder-count {
  font-size: 0.7rem; background: var(--bg-3); color: var(--text-muted);
  padding: 0.1rem 0.5rem; border-radius: 10px; min-width: 24px; text-align: center;
}
.folder-tab[aria-selected="true"] .folder-count {
  background: rgba(var(--accent-rgb), 0.25);
  color: var(--accent-2);
}

.folder-body {
  background: var(--bg-2); border: 1px solid var(--line);
  border-radius: var(--radius-lg); padding: 1.25rem;
}
.folder-help { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 1rem; line-height: 1.5; }

.upload-zone {
  border: 2px dashed var(--line); border-radius: var(--radius-lg);
  padding: 2rem 1rem; text-align: center;
  transition: border-color 0.15s, background 0.15s;
  cursor: pointer; margin-bottom: 1rem;
}
.upload-zone:hover, .upload-zone:focus, .upload-zone[data-dragover="true"] {
  border-color: var(--accent); background: rgba(var(--accent-rgb), 0.05);
  outline: none;
}
.upload-cta { display: flex; flex-direction: column; align-items: center; gap: 0.4rem; }
.upload-icon { font-size: 1.5rem; opacity: 0.6; }
.upload-text { font-size: 1rem; color: var(--text); }
.upload-hint { font-size: 0.8rem; color: var(--text-muted); }

.upload-progress { margin-top: 1rem; display: flex; flex-direction: column; gap: 0.5rem; }
.upload-progress-row {
  display: flex; align-items: center; gap: 0.75rem;
  padding: 0.5rem 0.75rem; background: var(--bg-3);
  border-radius: var(--radius); font-size: 0.85rem;
}
.upload-progress-row .upload-bar { flex: 1; height: 4px; background: var(--bg); border-radius: 2px; overflow: hidden; }
.upload-progress-row .upload-bar-fill { height: 100%; background: var(--accent); width: 0%; transition: width 0.2s; }

/* ─── Document list ────────────────────────────────────────────── */
.doc-list { list-style: none; padding: 0; margin: 0; }
.doc-row { display: flex; align-items: center; gap: 1rem; padding: 0.75rem; border-bottom: 1px solid var(--line); transition: background 0.1s; }
.doc-row:hover { background: var(--bg-3); }
.doc-row.is-disabled { opacity: 0.55; }
.doc-meta { flex: 1; min-width: 0; }
.doc-name { font-size: 0.95rem; color: var(--text); margin: 0; word-break: break-word; }
.doc-info { font-size: 0.75rem; color: var(--text-muted); margin-top: 0.15rem; }
.doc-info .ok { color: var(--success); }
.doc-info .pending { color: var(--warn); }
.doc-info .err { color: var(--danger); }
.doc-actions { display: flex; gap: 0.5rem; align-items: center; }

.toggle {
  position: relative; width: 42px; height: 22px;
  background: var(--bg-3); border-radius: 11px;
  cursor: pointer; transition: background 0.15s; flex-shrink: 0;
}
.toggle::after {
  content: ""; position: absolute; top: 2px; left: 2px;
  width: 18px; height: 18px; background: var(--text-muted);
  border-radius: 50%; transition: left 0.15s, background 0.15s;
}
.toggle[data-on="true"] { background: rgba(var(--accent-rgb), 0.4); }
.toggle[data-on="true"]::after { left: 22px; background: var(--accent); }

.btn-icon {
  width: 32px; height: 32px;
  display: grid; place-items: center;
  border-radius: var(--radius);
  color: var(--text-muted);
  transition: background 0.1s, color 0.1s;
}
.btn-icon:hover { background: var(--bg-3); color: var(--danger); }
.btn-icon-x {
  width: 28px; height: 28px;
  border-radius: 50%;
  color: var(--text-muted);
  transition: background 0.1s, color 0.1s;
}
.btn-icon-x:hover { background: var(--bg-3); color: var(--text); }

.doc-empty, .empty-state {
  padding: 1.5rem; text-align: center;
  color: var(--text-muted); font-size: 0.9rem;
}

/* ─── Buttons ──────────────────────────────────────────────────── */
.btn-primary {
  background: var(--accent); color: white;
  padding: 0.6rem 1.25rem; border-radius: var(--radius);
  font-weight: 500; transition: background 0.15s;
}
.btn-primary:hover { background: var(--accent-dark); }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-secondary {
  background: var(--bg-3); color: var(--text);
  padding: 0.5rem 1rem; border-radius: var(--radius);
  font-size: 0.85rem; border: 1px solid var(--line);
}
.btn-secondary:hover { background: var(--bg-4); }
.btn-ghost {
  color: var(--text-muted); padding: 0.4rem 0.8rem;
  border-radius: var(--radius); font-size: 0.85rem;
}
.btn-ghost:hover { background: var(--bg-3); color: var(--text); }

/* ─── Login screen ─────────────────────────────────────────────── */
.login-screen { display: grid; place-items: center; min-height: 60vh; }
.login-card { width: 100%; max-width: 380px; background: var(--bg-2); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 2rem; box-shadow: var(--shadow-lg); }
.login-card h2 { margin: 0 0 0.5rem; font-size: 1.3rem; }
.login-hint { color: var(--text-muted); font-size: 0.9rem; margin: 0 0 1.5rem; }
.login-form { display: flex; flex-direction: column; gap: 1rem; }
.login-form label { display: flex; flex-direction: column; gap: 0.35rem; font-size: 0.85rem; color: var(--text-muted); }
.login-form input { padding: 0.6rem 0.8rem; background: var(--bg); color: var(--text); border: 1px solid var(--line); border-radius: var(--radius); font-size: 0.95rem; }
.login-form input:focus { outline: none; border-color: var(--accent); }
.login-error { background: rgba(239, 68, 68, 0.1); border: 1px solid var(--danger); color: var(--danger); padding: 0.6rem 0.8rem; border-radius: var(--radius); font-size: 0.85rem; }

/* ─── Klausur cards ────────────────────────────────────────────── */
.klausur-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 0.75rem; }
.klausur-card {
  background: var(--bg-2); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 1rem;
  display: flex; flex-direction: column; gap: 0.6rem;
  transition: border-color 0.15s, transform 0.1s;
  cursor: pointer;
}
.klausur-card:hover { border-color: var(--accent); transform: translateY(-1px); }
.klausur-card-header { display: flex; justify-content: space-between; align-items: baseline; gap: 0.5rem; }
.klausur-card-num { background: var(--accent); color: white; font-weight: 700; font-size: 0.75rem; padding: 0.15rem 0.5rem; border-radius: 10px; flex-shrink: 0; }
.klausur-card-name { font-weight: 600; font-size: 0.95rem; flex: 1; word-break: break-word; }
.klausur-card-topics { display: flex; flex-wrap: wrap; gap: 0.3rem; }
.klausur-card-topic { background: rgba(var(--accent-rgb), 0.12); color: var(--accent-2); padding: 0.15rem 0.5rem; border-radius: 4px; font-size: 0.7rem; cursor: pointer; transition: background 0.1s; }
.klausur-card-topic:hover { background: rgba(var(--accent-rgb), 0.25); }
.klausur-card-notes { color: var(--text-muted); font-size: 0.8rem; font-style: italic; }
.klausur-card-cta { margin-top: 0.25rem; font-size: 0.85rem; color: var(--accent-2); display: flex; align-items: center; gap: 0.3rem; }
.klausur-card-actions { display: flex; gap: 0.4rem; margin-top: 0.4rem; flex-wrap: wrap; }
.klausur-card-mini {
  font-size: 0.75rem; padding: 0.35rem 0.6rem; border-radius: 4px;
  background: var(--bg-4); color: var(--text-muted);
  border: 1px solid var(--line);
  transition: all 0.1s;
}
.klausur-card-mini:hover { background: var(--bg-3); color: var(--accent-2); border-color: var(--accent); }

/* ─── Lernen: Heatmap ──────────────────────────────────────────── */
.heatmap-block { background: var(--bg-2); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 1.25rem; margin-bottom: 1.5rem; }
.heatmap-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1rem; flex-wrap: wrap; gap: 0.5rem; }
.heatmap-title { margin: 0; font-size: 1rem; }
.heatmap-legend { display: flex; align-items: center; gap: 0.4rem; font-size: 0.75rem; color: var(--text-muted); flex-wrap: wrap; }
.legend-cell { display: inline-block; width: 18px; height: 12px; border-radius: 2px; }
.legend-cell[data-level="0"] { background: var(--bg-4); }
.legend-cell[data-level="2"] { background: rgba(245, 158, 11, 0.55); }
.legend-cell[data-level="4"] { background: rgba(16, 185, 129, 0.6); }
.legend-cell[data-level="5"] { background: rgba(16, 185, 129, 1); }

.heatmap-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 0.5rem; }
.heatmap-cell {
  background: var(--bg-3); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 0.75rem;
  display: flex; flex-direction: column; gap: 0.3rem;
  position: relative; overflow: hidden;
  transition: transform 0.1s, border-color 0.1s;
  cursor: pointer;
}
.heatmap-cell:hover { transform: translateY(-1px); border-color: var(--accent); }
.heatmap-cell .hc-bar {
  position: absolute; bottom: 0; left: 0; right: 0; height: 3px;
  background: var(--bg-4);
}
.heatmap-cell .hc-bar-fill {
  height: 100%; background: linear-gradient(to right, var(--warn), var(--success));
  transition: width 0.3s;
}
.heatmap-cell .hc-name { font-size: 0.85rem; color: var(--text); font-weight: 500; line-height: 1.3; }
.heatmap-cell .hc-meta { font-size: 0.7rem; color: var(--text-muted); display: flex; justify-content: space-between; }
.heatmap-cell[data-level="0"] .hc-bar-fill { background: var(--bg-4); width: 0%; }
.heatmap-cell[data-level="1"] .hc-bar-fill { width: 20%; }
.heatmap-cell[data-level="2"] .hc-bar-fill { width: 40%; }
.heatmap-cell[data-level="3"] .hc-bar-fill { width: 60%; }
.heatmap-cell[data-level="4"] .hc-bar-fill { width: 80%; }
.heatmap-cell[data-level="5"] .hc-bar-fill { width: 100%; background: var(--success); }

/* ─── Lernen: Topic picker ─────────────────────────────────────── */
.topic-picker { background: var(--bg-2); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 1.25rem; margin-bottom: 1.5rem; }
.topic-picker-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1rem; gap: 0.5rem; flex-wrap: wrap; }
.topic-picker-head h3 { margin: 0; font-size: 1rem; }
.select-mini {
  background: var(--bg-3); color: var(--text);
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 0.4rem 0.6rem; font-size: 0.85rem;
}
.select-mini:focus { outline: none; border-color: var(--accent); }
.topic-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 0.5rem; }
.topic-pill {
  background: var(--bg-3); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 0.6rem 0.85rem;
  font-size: 0.85rem; color: var(--text);
  cursor: pointer; transition: all 0.1s;
  display: flex; flex-direction: column; gap: 0.25rem;
  text-align: left;
}
.topic-pill:hover { border-color: var(--accent); background: var(--bg-4); }
.topic-pill .tp-label { font-weight: 500; }
.topic-pill .tp-meta { font-size: 0.7rem; color: var(--text-muted); }
.topic-pill[data-mastered="true"] { border-color: var(--success); }
.topic-pill .tp-stars { color: var(--warn); font-size: 0.75rem; letter-spacing: 0.05em; }

/* ─── Minigame Launcher ────────────────────────────────────────── */
.minigame-launcher {
  background: linear-gradient(135deg, rgba(var(--accent-rgb),0.06), var(--bg-2));
  border: 1px solid var(--accent);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  margin-bottom: 1.5rem;
  animation: fadein 0.2s ease-out;
}
.launcher-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1rem; font-size: 0.95rem; }
.launcher-head strong { color: var(--accent-2); }
.launcher-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 0.75rem; }
.minigame-card {
  background: var(--bg-3); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 1rem;
  display: flex; flex-direction: column; gap: 0.4rem;
  text-align: left; transition: all 0.1s;
}
.minigame-card:hover { border-color: var(--accent); transform: translateY(-1px); background: var(--bg-4); }
.mg-icon { font-size: 1.3rem; }
.mg-title { font-weight: 600; font-size: 0.95rem; color: var(--text); }
.mg-desc { font-size: 0.8rem; color: var(--text-muted); line-height: 1.35; }
.mg-tag { font-size: 0.7rem; color: var(--accent-2); margin-top: 0.25rem; }

/* ─── Minigame Stage ──────────────────────────────────────────── */
.minigame-stage {
  background: var(--bg-2); border: 1px solid var(--line);
  border-radius: var(--radius-lg); padding: 1.5rem;
  animation: fadein 0.2s ease-out;
}
.stage-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1rem; gap: 0.5rem; flex-wrap: wrap; }
.stage-title { margin: 0; font-size: 1.05rem; font-weight: 600; }
.stage-progress { color: var(--text-muted); font-size: 0.85rem; }
.stage-progress-bar { height: 4px; background: var(--bg-4); border-radius: 2px; overflow: hidden; margin-bottom: 1rem; }
.stage-progress-bar-fill { height: 100%; background: var(--accent); transition: width 0.3s; }

.stage-loader { padding: 3rem 1rem; text-align: center; color: var(--text-muted); }
.stage-spinner {
  display: inline-block; width: 28px; height: 28px;
  border: 3px solid var(--bg-4); border-top-color: var(--accent);
  border-radius: 50%; animation: spin 0.7s linear infinite;
  margin-bottom: 0.8rem;
}
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes fadein { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: translateY(0); } }

/* MCQ-style question block — used by Diagnose + Klausur quiz */
.qa-card { background: var(--bg-3); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 1.25rem; }
.qa-q { font-size: 1.05rem; font-weight: 500; margin: 0 0 1rem; line-height: 1.5; }
.qa-options { display: flex; flex-direction: column; gap: 0.5rem; }
.qa-option {
  text-align: left; padding: 0.75rem 1rem;
  background: var(--bg); border: 1px solid var(--line);
  border-radius: var(--radius); transition: all 0.1s;
  display: flex; gap: 0.75rem; align-items: flex-start;
}
.qa-option:not(:disabled):hover { border-color: var(--accent); background: var(--bg-4); }
.qa-option:disabled { cursor: default; }
.qa-option-letter { font-weight: 600; color: var(--text-muted); flex-shrink: 0; }
.qa-option[data-state="correct"] { border-color: var(--success); background: rgba(16, 185, 129, 0.1); }
.qa-option[data-state="wrong"] { border-color: var(--danger); background: rgba(239, 68, 68, 0.1); }
.qa-option[data-state="reveal-correct"] { border-color: var(--success); }
.qa-feedback {
  margin-top: 1rem; padding: 0.85rem 1rem; border-radius: var(--radius);
  background: var(--bg); border-left: 3px solid var(--accent);
  font-size: 0.9rem; line-height: 1.5;
}
.qa-feedback.correct { border-left-color: var(--success); }
.qa-feedback.wrong { border-left-color: var(--danger); }
.qa-feedback strong { color: var(--accent-2); }
.qa-actions { display: flex; justify-content: flex-end; gap: 0.5rem; margin-top: 1rem; }

/* Klinikfall stage */
.fall-patient { background: rgba(56, 189, 248, 0.1); border-left: 3px solid var(--info); padding: 1rem; border-radius: var(--radius); margin-bottom: 1rem; line-height: 1.6; }
.fall-stage-num { color: var(--info); font-weight: 600; font-size: 0.85rem; margin-bottom: 0.25rem; }
.fall-learning {
  margin-top: 0.75rem; padding: 0.6rem 0.85rem;
  background: rgba(168, 85, 247, 0.08);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  font-size: 0.85rem; color: var(--text-muted);
}
.fall-learning strong { color: var(--accent-2); }

/* Stimmt-das? */
.stimmt-grid { display: flex; flex-direction: column; gap: 0.75rem; }
.stimmt-card {
  background: var(--bg-3); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 1rem;
}
.stimmt-statement { font-size: 0.95rem; margin-bottom: 0.75rem; line-height: 1.5; }
.stimmt-buttons { display: flex; gap: 0.5rem; }
.stimmt-btn {
  flex: 1; padding: 0.5rem 1rem;
  background: var(--bg); border: 1px solid var(--line);
  border-radius: var(--radius); font-weight: 500;
  transition: all 0.1s;
}
.stimmt-btn:not(:disabled):hover { border-color: var(--accent); background: var(--bg-4); }
.stimmt-btn[data-state="correct"] { border-color: var(--success); background: rgba(16, 185, 129, 0.15); color: var(--success); }
.stimmt-btn[data-state="wrong"] { border-color: var(--danger); background: rgba(239, 68, 68, 0.15); color: var(--danger); }
.stimmt-explain { margin-top: 0.5rem; font-size: 0.85rem; color: var(--text-muted); padding-left: 0.6rem; border-left: 2px solid var(--line); }
.stimmt-explain.correct { border-left-color: var(--success); }
.stimmt-explain.wrong { border-left-color: var(--danger); }
.trap-tag { display: inline-block; padding: 0.1rem 0.4rem; background: rgba(245, 158, 11, 0.15); color: var(--warn); border-radius: 3px; font-size: 0.7rem; margin-right: 0.4rem; }

/* Summary card for end of minigame */
.summary-card {
  background: linear-gradient(135deg, rgba(var(--accent-rgb),0.1), var(--bg-3));
  border: 1px solid var(--accent);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  text-align: center;
}
.summary-stars {
  font-size: 2rem; letter-spacing: 0.1em; margin-bottom: 0.5rem;
  color: var(--warn);
}
.summary-text { font-size: 1rem; margin-bottom: 0.25rem; }
.summary-meta { color: var(--text-muted); font-size: 0.85rem; margin-bottom: 1rem; }
.summary-actions { display: flex; gap: 0.5rem; justify-content: center; flex-wrap: wrap; }

/* ─── Persona-Form ─────────────────────────────────────────────── */
.persona-form { background: var(--bg-2); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 1.25rem; }
.persona-label { display: flex; flex-direction: column; gap: 0.5rem; font-size: 0.85rem; color: var(--text-muted); margin-bottom: 1rem; }
.persona-form textarea {
  background: var(--bg); color: var(--text);
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 0.75rem 1rem; font-family: inherit; font-size: 0.95rem;
  line-height: 1.5; resize: vertical; min-height: 200px;
}
.persona-form textarea:focus { outline: none; border-color: var(--accent); }
.persona-actions { display: flex; justify-content: space-between; align-items: center; gap: 1rem; }
.persona-status { color: var(--text-muted); font-size: 0.85rem; }
.persona-status.saved { color: var(--success); }
.hint-list { color: var(--text-muted); font-size: 0.85rem; line-height: 1.6; margin: 0.5rem 0 1rem; padding-left: 1.5rem; }
.hint-list li { margin-bottom: 0.25rem; }

/* ─── Telegram-Pairing Block ──────────────────────────────────── */
.telegram-block {
  background: var(--bg-2); border: 1px solid var(--line);
  border-radius: var(--radius-lg); padding: 1.25rem; margin-top: 1.5rem;
}
.tg-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 0.5rem; gap: 0.5rem; }
.tg-head h3 { margin: 0; font-size: 1rem; }
.tg-hint { color: var(--text-muted); font-size: 0.9rem; margin: 0 0 1rem; line-height: 1.5; }
.tg-badge {
  font-size: 0.75rem; padding: 0.2rem 0.6rem; border-radius: 10px;
  background: var(--bg-3); color: var(--text-muted);
  border: 1px solid var(--line);
}
.tg-badge.linked { background: rgba(16,185,129,0.15); color: var(--success); border-color: var(--success); }
.tg-badge.unlinked { background: var(--bg-3); color: var(--text-muted); }
.tg-link-area { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.tg-code-display { margin-top: 1rem; }
.tg-code-line {
  background: var(--bg); border: 1px solid var(--accent);
  border-radius: var(--radius); padding: 0.85rem 1rem;
  font-size: 1.1rem; letter-spacing: 0.05em;
  margin: 0.5rem 0;
  user-select: all;
  display: flex; justify-content: center;
}
.tg-code-line code { color: var(--accent-2); font-weight: 600; font-size: 1.15rem; letter-spacing: 0.1em; }
.tg-code-hint { font-size: 0.8rem; color: var(--text-muted); margin: 0.25rem 0 0; }

/* ─── Chat Dock (resizable + MD) ──────────────────────────────── */
.chat-dock {
  position: fixed;
  bottom: 1rem; right: 1rem;
  width: 460px; height: 640px;
  min-width: 340px; min-height: 420px;
  max-width: calc(100vw - 2rem);
  max-height: calc(100vh - 2rem);
  background: var(--bg-2); border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  display: none; flex-direction: column;
  z-index: 100;
}
.chat-dock[data-open="true"] { display: flex; }
.dock-resize {
  position: absolute;
  top: 0; left: 0;
  width: 14px; height: 14px;
  cursor: nwse-resize;
  background: linear-gradient(135deg, transparent 35%, var(--text-dim) 35%, var(--text-dim) 50%, transparent 50%);
  border-top-left-radius: var(--radius-lg);
  z-index: 1;
}
.dock-resize:hover { background-color: rgba(var(--accent-rgb), 0.1); }
.dock-head { padding: 0.75rem 1rem; border-bottom: 1px solid var(--line); display: flex; align-items: center; gap: 0.5rem; }
.dock-title { font-weight: 600; }
.dock-sub { color: var(--text-muted); font-size: 0.85rem; flex: 1; }
.dock-reset, .dock-collapse { width: 28px; height: 28px; border-radius: var(--radius); color: var(--text-muted); }
.dock-reset:hover, .dock-collapse:hover { background: var(--bg-3); color: var(--text); }
.dock-box { flex: 1; padding: 0.75rem 1rem; overflow-y: auto; display: flex; flex-direction: column; gap: 0.75rem; }

.dock-msg {
  max-width: 90%;
  padding: 0.7rem 0.9rem;
  border-radius: var(--radius);
  font-size: 0.92rem;
  line-height: 1.55;
  word-break: break-word;
}
.dock-msg.user { align-self: flex-end; background: var(--accent-dark); color: white; white-space: pre-wrap; }
.dock-msg.assistant { align-self: flex-start; background: var(--bg-3); color: var(--text); }
.dock-msg.assistant.typing { font-style: italic; opacity: 0.7; }

/* MD content inside chat */
.dock-md p { margin: 0 0 0.6rem; }
.dock-md p:last-child { margin-bottom: 0; }
.dock-md h1, .dock-md h2, .dock-md h3 { margin: 0.6rem 0 0.4rem; line-height: 1.3; }
.dock-md h1 { font-size: 1.05rem; color: var(--accent-2); }
.dock-md h2 { font-size: 1rem; color: var(--accent-2); }
.dock-md h3 { font-size: 0.95rem; color: var(--text); }
.dock-md ul, .dock-md ol { margin: 0.4rem 0 0.6rem; padding-left: 1.4rem; }
.dock-md li { margin-bottom: 0.2rem; }
.dock-md code { background: var(--bg); padding: 0.1rem 0.35rem; border-radius: 3px; font-size: 0.85em; color: var(--accent-2); }
.dock-md pre { background: var(--bg); padding: 0.7rem 0.9rem; border-radius: var(--radius); overflow-x: auto; margin: 0.5rem 0; }
.dock-md pre code { background: none; padding: 0; color: var(--text); }
.dock-md strong { color: var(--text); }
.dock-md em { color: var(--text-muted); font-style: italic; }
.dock-md a { color: var(--accent-2); text-decoration: underline; }
.dock-md table.md-table { border-collapse: collapse; margin: 0.5rem 0; font-size: 0.85em; width: auto; }
.dock-md table.md-table th, .dock-md table.md-table td { border: 1px solid var(--line); padding: 0.3rem 0.6rem; }
.dock-md table.md-table th { background: var(--bg); }
.dock-md blockquote { border-left: 3px solid var(--accent); padding-left: 0.8rem; margin: 0.5rem 0; color: var(--text-muted); }

.dock-msg .sources {
  margin-top: 0.6rem; padding-top: 0.5rem; border-top: 1px solid var(--line);
  font-size: 0.72rem; color: var(--text-muted);
}
.dock-msg .sources .src-tag {
  display: inline-block; background: rgba(var(--accent-rgb), 0.15); color: var(--accent-2);
  padding: 0.1rem 0.4rem; border-radius: 3px; margin: 0.15rem 0.25rem 0 0; font-size: 0.7rem;
}

/* Inline structured renderer (quiz/flashcards/case in chat) */
.dock-struct {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.85rem;
  margin-top: 0.5rem;
}
.dock-struct .ds-head { font-weight: 600; color: var(--accent-2); margin-bottom: 0.4rem; font-size: 0.85rem; }
.dock-struct .ds-q { font-size: 0.9rem; margin-bottom: 0.5rem; }
.dock-struct .ds-options { display: flex; flex-direction: column; gap: 0.3rem; }
.dock-struct .ds-option {
  text-align: left; padding: 0.4rem 0.6rem;
  background: var(--bg-3); border: 1px solid var(--line);
  border-radius: 4px; font-size: 0.85rem;
}
.dock-struct .ds-option:hover:not(:disabled) { border-color: var(--accent); }
.dock-struct .ds-option[data-state="correct"] { border-color: var(--success); background: rgba(16, 185, 129, 0.1); }
.dock-struct .ds-option[data-state="wrong"] { border-color: var(--danger); background: rgba(239, 68, 68, 0.1); }

.dock-form { border-top: 1px solid var(--line); padding: 0.5rem; display: flex; gap: 0.5rem; }
.dock-form textarea {
  flex: 1; resize: none;
  background: var(--bg); color: var(--text);
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 0.5rem 0.7rem; font-size: 0.9rem;
  max-height: 140px; min-height: 36px;
  font-family: inherit;
}
.dock-form textarea:focus { outline: none; border-color: var(--accent); }
.btn-send { background: var(--accent); color: white; width: 40px; border-radius: var(--radius); font-weight: 700; font-size: 1.1rem; }
.btn-send:hover { background: var(--accent-dark); }

.dock-open {
  position: fixed; bottom: 1rem; right: 1rem;
  background: var(--accent); color: white;
  padding: 0.7rem 1.2rem; border-radius: 24px;
  font-weight: 500; box-shadow: var(--shadow-lg);
  display: flex; align-items: center; gap: 0.5rem;
  z-index: 99;
}
.dock-open:hover { background: var(--accent-dark); }
.dock-open[hidden] { display: none; }
.dock-open-dot { width: 8px; height: 8px; background: var(--success); border-radius: 50%; display: inline-block; }

/* ─── Footer ───────────────────────────────────────────────────── */
.footer { margin-top: 2rem; padding-top: 1rem; border-top: 1px solid var(--line); text-align: center; font-size: 0.8rem; color: var(--text-muted); }

/* ─── Toasts ───────────────────────────────────────────────────── */
.toast-stack { position: fixed; top: 1rem; right: 1rem; display: flex; flex-direction: column; gap: 0.5rem; z-index: 200; pointer-events: none; }
.toast { padding: 0.6rem 1rem; background: var(--bg-2); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow-md); color: var(--text); font-size: 0.85rem; pointer-events: auto; animation: toast-in 0.2s ease-out; }
.toast.error { border-color: var(--danger); color: var(--danger); }
.toast.success { border-color: var(--success); color: var(--success); }
@keyframes toast-in { from { transform: translateX(20px); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

/* Mobile */
@media (max-width: 800px) {
  .space-tabs, .folder-tabs { grid-template-columns: repeat(2, 1fr); }
  .space-tab { font-size: 0.85rem; padding: 0.7rem 0.4rem; }
  .chat-dock { width: calc(100vw - 2rem); height: calc(100vh - 6rem); right: 1rem; bottom: 1rem; }
  .dock-resize { display: none; }
}