/* ══════════════════════════════════════════════════════════════════════════════
   McLellan Hub — Chat UI (Intellectual Quietude light theme)
   Matches public portfolio + admin. Mobile-Safari friendly.
   ══════════════════════════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Geist:wght@300;400;500;600;700&family=Inter:wght@300;400;500;600&family=JetBrains+Mono:wght@400;500&display=swap');

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #f8faff;
  --surface: #ffffff;
  --surface2: #f0f2f9;
  --surface3: #e4e8f2;
  --border: #e2e6f0;
  --border-strong: #c8cedf;
  --accent: #8083ff;
  --accent-hover: #6365e0;
  --accent-light: #eeeeff;
  --accent-ink: #ffffff;
  --text: #0f172a;
  --text-dim: #475569;
  --text-muted: #64748b;
  --error: #c4342b;
  --success: #0f6b3a;
  --font: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --display: 'Geist', 'Inter', system-ui, sans-serif;
  --mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', monospace;
  --sidebar-w: 260px;
  --radius: 8px;
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06);
  --shadow: 0 4px 16px rgba(15, 23, 42, 0.08);
}

html, body { height: 100%; }
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font); background: var(--bg); color: var(--text);
  font-size: 15px; line-height: 1.55; letter-spacing: -0.01em;
  -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { font-family: var(--display); font-weight: 600; letter-spacing: -0.03em; color: var(--text); }

/* ── Login ──────────────────────────────────────────────────────────────────── */
.login-page {
  display: flex; align-items: center; justify-content: center;
  min-height: 100vh; min-height: 100dvh;
  background: radial-gradient(circle at 20% 0%, var(--accent-light) 0%, transparent 50%), var(--bg);
  padding: 20px;
}
.login-box {
  background: var(--surface); border: 1px solid var(--border); border-radius: 16px;
  padding: 36px 32px; width: 100%; max-width: 360px;
  display: flex; flex-direction: column; gap: 14px;
  box-shadow: var(--shadow);
}
.login-box h1 { font-size: 24px; }
.login-box .sub { color: var(--text-dim); font-size: 13px; font-family: var(--mono); }
.login-box .error { color: var(--error); font-size: 13px; }
.login-box form { display: flex; flex-direction: column; gap: 10px; }
.login-box input, .login-box button, .login-google-btn {
  padding: 11px 14px; border-radius: 10px; font-size: 15px; font-family: var(--font);
}
.login-box input { background: var(--surface2); border: 1px solid var(--border); color: var(--text); }
.login-box input:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.login-box button, .login-google-btn {
  background: var(--accent); color: var(--accent-ink); border: none; cursor: pointer; font-weight: 600;
  transition: background 0.15s;
  text-align: center; text-decoration: none;
}
.login-box button:hover, .login-google-btn:hover { background: var(--accent-hover); color: var(--accent-ink); text-decoration: none; }

/* ── Hub layout ────────────────────────────────────────────────────────────── */
.hub-page {
  display: flex;
  height: 100vh; height: 100dvh;
  overflow: hidden;
}

.hub-page main {
  flex: 1;
  min-width: 0;
}

.sidebar {
  width: var(--sidebar-w);
  background: var(--surface); border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
  overflow-y: auto; -webkit-overflow-scrolling: touch;
  flex-shrink: 0;
}
.sidebar-header {
  padding: 18px 16px 14px; border-bottom: 1px solid var(--border);
  display: flex; flex-direction: column; gap: 6px;
}
.logo {
  font-family: var(--serif); font-weight: 700; font-size: 17px;
  color: var(--text); letter-spacing: -0.01em;
}
.user-badge {
  display: inline-block; align-self: flex-start;
  font-family: var(--mono); font-size: 10px; font-weight: 600;
  color: var(--accent);
  background: var(--accent-light);
  padding: 3px 10px; border-radius: 100px;
  text-transform: uppercase; letter-spacing: 0.08em;
}
.sidebar-section { padding: 14px 14px; }
.sidebar-new-btn {
  font-size: 16px; font-weight: 400; color: var(--text-muted); text-decoration: none;
  line-height: 1; padding: 0 2px; text-transform: none; letter-spacing: 0;
  transition: color 0.15s; background: none; border: none; cursor: pointer;
}
.sidebar-new-btn:hover { color: var(--accent); }
.sidebar-section h3 {
  font-family: var(--font); font-size: 11px; font-weight: 600;
  color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.1em;
  margin-bottom: 8px; padding: 0 4px;
  display: flex; align-items: center; justify-content: space-between;
}
.new-chat-btn {
  display: block; padding: 10px 14px;
  background: var(--accent); color: var(--accent-ink);
  border-radius: 10px; font-size: 14px; font-weight: 600;
  text-align: center;
  transition: background 0.15s;
}
.new-chat-btn:hover { background: var(--accent-hover); color: var(--accent-ink); text-decoration: none; }
.sidebar-nav-link {
  display: block; padding: 7px 10px; border-radius: 8px;
  font-size: 13px; color: var(--text-dim); font-weight: 500;
  transition: background 0.12s, color 0.12s;
}
.sidebar-nav-link:hover { background: var(--surface-2); color: var(--text); text-decoration: none; }

.project-list, .conv-list { list-style: none; display: flex; flex-direction: column; gap: 1px; }
.project-list li a, .conv-list li a {
  display: block; padding: 7px 10px; border-radius: 8px;
  font-size: 13px; color: var(--text-dim);
  font-family: var(--mono);
  transition: background 0.12s;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.conv-list li a { font-family: var(--font); }
.project-list li a:hover, .conv-list li a:hover {
  color: var(--text); background: var(--surface2); text-decoration: none;
}
.project-list li.active a, .conv-list li.active a {
  color: var(--accent); background: var(--accent-light); font-weight: 600;
}

.sidebar-footer {
  margin-top: auto; padding: 14px 16px; border-top: 1px solid var(--border);
}
.logout-btn {
  background: transparent; border: 1px solid var(--border-strong);
  color: var(--text-dim); padding: 8px 14px; border-radius: 8px;
  cursor: pointer; font-size: 13px; font-family: var(--font); width: 100%;
  transition: all 0.15s;
}
.logout-btn:hover { color: var(--text); border-color: var(--accent); background: var(--surface2); }

/* ── Main area ─────────────────────────────────────────────────────────────── */
.main-area {
  flex: 1; display: flex; flex-direction: column;
  overflow: hidden; min-width: 0;
}
.hub-home {
  flex: 1;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding: 44px 40px 56px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}
.crm-scroll-area {
  flex: 1;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}
.welcome { padding: 60px 40px; max-width: 640px; }
.welcome h2 { font-size: 30px; margin-bottom: 12px; font-family: var(--serif); }
.welcome p { color: var(--text-dim); font-size: 16px; }
.welcome code {
  background: var(--surface3); padding: 2px 8px; border-radius: 6px;
  font-family: var(--mono); font-size: 13px; color: var(--accent);
}
.welcome-panel {
  max-width: none;
  padding: 36px;
  background:
    radial-gradient(circle at top right, rgba(70, 72, 212, 0.14), transparent 28%),
    linear-gradient(135deg, rgba(255,255,255,0.96), rgba(244,239,251,0.96));
  border: 1px solid var(--border);
  border-radius: 24px;
  box-shadow: var(--shadow);
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(260px, 0.9fr);
  gap: 28px;
  align-items: end;
}
.welcome-copy { max-width: 720px; }
.welcome-kicker,
.section-kicker {
  display: inline-block;
  margin-bottom: 12px;
  color: var(--accent);
  background: var(--accent-light);
  border-radius: 999px;
  padding: 5px 10px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.welcome-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}
.welcome-stat {
  background: rgba(255,255,255,0.85);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 18px 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-height: 92px;
}
.welcome-stat strong {
  font-family: var(--serif);
  font-size: 26px;
  line-height: 1;
}
.welcome-stat span {
  color: var(--text-dim);
  font-size: 13px;
}
.home-section {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.section-heading h3 {
  font-size: 22px;
}
.section-link,
.section-note {
  color: var(--text-dim);
  font-size: 14px;
}
.section-link {
  border-bottom: 1px solid transparent;
}
.section-link:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
  text-decoration: none;
}
.project-button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.project-cta {
  min-width: 220px;
  flex: 1 1 220px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.15s, border-color 0.15s, box-shadow 0.15s;
}
.project-cta:hover {
  transform: translateY(-1px);
  border-color: var(--accent);
  box-shadow: var(--shadow);
  text-decoration: none;
}
.project-cta-label {
  color: var(--text);
  font-weight: 700;
  font-size: 15px;
}
.project-cta-meta {
  color: var(--text-muted);
  font-size: 12px;
  font-family: var(--mono);
}
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 16px;
}
.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  box-shadow: var(--shadow-sm);
}
.project-card-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: start;
}
.project-card-head h4 {
  font-family: var(--serif);
  font-size: 22px;
}
.project-slug,
.project-doc-count {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}
.project-card p {
  color: var(--text-dim);
  font-size: 14px;
}
.project-card-actions {
  margin-top: auto;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.project-card-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 10px 14px;
  border-radius: 10px;
  font-family: var(--font);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  border: 1px solid var(--border);
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}
.project-card-btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
}
.project-card-btn-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  text-decoration: none;
}
.project-card-btn-secondary {
  background: var(--surface2);
  color: var(--text);
}
.project-card-btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-light);
}
.recent-docs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 12px;
}
.recent-doc,
.empty-state {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 16px 18px;
}
.recent-doc {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.recent-doc:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-sm);
  text-decoration: none;
}
.recent-doc strong {
  display: block;
  color: var(--text);
  font-size: 14px;
  margin-bottom: 2px;
}
.recent-doc span,
.empty-state p {
  color: var(--text-dim);
  font-size: 13px;
}
.recent-doc em {
  font-style: normal;
  color: var(--text-muted);
  font-family: var(--mono);
  font-size: 12px;
  white-space: nowrap;
}

/* ── Chat ──────────────────────────────────────────────────────────────────── */
.chat-area { display: flex; flex-direction: column; }
.chat-header {
  padding: 14px 22px; border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 16px;
  flex-shrink: 0; background: var(--surface);
}
.chat-header h2 { font-size: 18px; font-weight: 600; font-family: var(--serif); }
.project-name { font-weight: 400; color: var(--text-dim); margin-left: 6px; font-family: var(--font); font-size: 14px; }
.model-picker { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.model-picker select {
  background: var(--surface2); border: 1px solid var(--border); color: var(--text);
  padding: 7px 12px; border-radius: 10px; font-size: 13px; font-family: var(--font);
  cursor: pointer;
}
.model-picker select:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.model-settings-link { font-size: 12px; color: var(--text-dim); white-space: nowrap; text-decoration: none; }
.model-settings-link:hover { color: var(--accent); }
.search-legend { font-size: 11px; color: var(--text-muted); white-space: nowrap; font-family: var(--mono); }

.move-to-project { display: flex; align-items: center; gap: 6px; margin-left: 12px; }
.move-btn { background: transparent; border: 1px solid var(--border); color: var(--text-dim); padding: 6px 12px; border-radius: 8px; font-size: 12px; font-family: var(--font); cursor: pointer; }
.move-btn:hover { border-color: var(--accent); color: var(--accent); }
.move-picker { display: flex; align-items: center; gap: 6px; }
.move-picker select { background: var(--surface2); border: 1px solid var(--border); color: var(--text); padding: 6px 10px; border-radius: 8px; font-size: 12px; font-family: var(--mono); cursor: pointer; }
.move-picker button { padding: 6px 12px; border-radius: 8px; font-size: 12px; font-family: var(--font); cursor: pointer; border: none; }
.move-picker #move-confirm-btn { background: var(--accent); color: #fff; }
.move-picker #move-confirm-btn:hover { background: var(--accent-dim); }
.move-picker #move-cancel-btn { background: transparent; color: var(--text-dim); border: 1px solid var(--border); }

.messages {
  flex: 1; overflow-y: auto; -webkit-overflow-scrolling: touch;
  padding: 24px; display: flex; flex-direction: column; gap: 18px;
}
.message { max-width: 800px; width: 100%; }
.message-user { align-self: flex-end; max-width: min(720px, 85%); }
.message-user .message-content {
  background: var(--accent); color: var(--accent-ink);
  padding: 12px 18px; border-radius: 16px 16px 4px 16px;
  box-shadow: var(--shadow-sm);
}
.message-assistant .message-content {
  background: var(--surface); border: 1px solid var(--border);
  padding: 16px 20px; border-radius: 4px 16px 16px 16px;
  box-shadow: var(--shadow-sm);
}
.message-content p { margin-bottom: 10px; }
.message-content p:last-child { margin-bottom: 0; }
.message-content ul, .message-content ol { margin: 8px 0 8px 22px; }
.message-content h1, .message-content h2, .message-content h3 {
  font-family: var(--serif); margin: 14px 0 8px;
}
.message-content pre {
  background: #1a1a2e; color: #e8e8ec; padding: 14px 16px; border-radius: 10px;
  overflow-x: auto; margin: 12px 0; font-size: 13px;
  -webkit-overflow-scrolling: touch;
}
.message-content pre code { color: inherit; background: transparent; padding: 0; }
.message-content code { font-family: var(--mono); font-size: 13px; color: var(--accent); }
.message-content :not(pre) > code {
  background: var(--accent-light); padding: 2px 6px; border-radius: 5px;
}
.message-user .message-content code,
.message-user .message-content :not(pre) > code {
  background: rgba(255,255,255,0.2); color: var(--accent-ink);
}

.message-meta {
  display: flex; align-items: center; gap: 8px; margin-top: 10px; flex-wrap: wrap;
}
.model-tag, .search-tag, .cost-tag {
  font-size: 11px; padding: 2px 9px; border-radius: 100px;
  border: 1px solid var(--border-strong); color: var(--text-dim);
  font-family: var(--mono);
}
.search-tag { color: var(--success); border-color: var(--success); background: #eef7f2; }
.model-id-tag { color: var(--text-muted); font-weight: 400; }

/* Star rating */
.rating-stars { display: flex; gap: 1px; margin-top: 8px; }
.star-btn {
  background: none; border: none; cursor: pointer; font-size: 18px; line-height: 1;
  color: var(--border-strong); padding: 0 2px; transition: color 0.1s;
}
.star-btn:hover, .star-btn.filled { color: #f5a623; }

/* Thinking indicator */
.thinking {
  display: inline-flex; gap: 5px; align-items: center; padding: 2px 0;
}
.thinking span {
  width: 7px; height: 7px; border-radius: 50%; background: var(--text-muted);
  animation: thinking-pulse 1.4s ease-in-out infinite;
}
.thinking span:nth-child(2) { animation-delay: 0.2s; }
.thinking span:nth-child(3) { animation-delay: 0.4s; }
@keyframes thinking-pulse {
  0%, 60%, 100% { transform: scale(1); opacity: 0.35; }
  30% { transform: scale(1.35); opacity: 1; }
}

.export-btns { display: flex; gap: 6px; margin-left: auto; flex-wrap: wrap; }
.export-btn {
  font-size: 12px; padding: 5px 11px; border-radius: 7px;
  background: var(--surface); border: 1px solid var(--border-strong); color: var(--text);
  cursor: pointer; font-family: var(--font);
  transition: all 0.15s;
}
.export-btn:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-light); }

.input-area {
  border-top: 1px solid var(--border);
  padding: 16px 22px;
  padding-bottom: calc(16px + env(safe-area-inset-bottom, 0px));
  flex-shrink: 0; background: var(--surface);
}
.data-sovereignty-flag {
  background: #fdf0ee; border: 1px solid #f2b5b0; color: var(--error);
  padding: 8px 14px; border-radius: 10px; font-size: 13px; margin-bottom: 10px;
}
#chat-form { display: flex; flex-direction: column; gap: 10px; }
#msg-input {
  width: 100%; background: var(--surface2); border: 1px solid var(--border); color: var(--text);
  padding: 12px 16px; border-radius: 12px;
  font-family: var(--font); font-size: 15px; line-height: 1.5;
  resize: none;
}
#msg-input:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: transparent; }
.input-controls { display: flex; align-items: center; gap: 12px; }
.sovereignty-toggle {
  font-size: 13px; color: var(--text-dim); cursor: pointer;
  display: flex; align-items: center; gap: 6px;
}
.sovereignty-toggle input { accent-color: var(--accent); }
.research-mode-toggle { font-size: 13px; color: var(--text-dim); cursor: pointer; display: flex; align-items: center; gap: 6px; }
.research-mode-toggle input { accent-color: #2f8a5a; }
.auto-analyse-toggle { font-size: 13px; color: var(--text-dim); cursor: pointer; display: flex; align-items: center; gap: 6px; }
.auto-analyse-toggle input { accent-color: var(--accent); }
.edit-prompt-btn { background: transparent; border: none; color: var(--text-dim); font-size: 13px; cursor: pointer; padding: 2px 4px; border-radius: 4px; }
.edit-prompt-btn:hover { color: var(--accent); }
.analysis-prompt-panel { background: var(--surface2); border: 1px solid var(--border); border-radius: 8px; padding: 10px 12px; margin-bottom: 8px; display: flex; flex-direction: column; gap: 6px; }
.analysis-prompt-panel textarea { background: var(--surface); border: 1px solid var(--border); color: var(--text); border-radius: 6px; padding: 8px 10px; font-size: 13px; font-family: var(--font); resize: vertical; }
.analysis-prompt-panel button { background: var(--surface); border: 1px solid var(--border); color: var(--text-dim); padding: 5px 12px; border-radius: 6px; font-size: 12px; font-family: var(--font); cursor: pointer; }
.analysis-prompt-panel button:hover { border-color: var(--accent); color: var(--accent); }
.search-provider-toggle, .search-depth-toggle {
  display: flex; align-items: center; gap: 6px;
  font-size: 13px; color: var(--text-dim);
}
.search-provider-toggle select, .search-depth-toggle select {
  font-size: 13px; font-family: var(--font); color: var(--text);
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 8px; padding: 5px 8px; cursor: pointer;
}
#send-btn {
  margin-left: auto; background: var(--accent); color: var(--accent-ink); border: none;
  padding: 11px 26px; border-radius: 10px; font-weight: 600; cursor: pointer;
  font-size: 14px; font-family: var(--font);
  transition: background 0.15s;
}
#send-btn:hover { background: var(--accent-hover); }
#send-btn:disabled { opacity: 0.5; cursor: not-allowed; }
.stop-btn {
  background: none; border: 1px solid var(--error); color: var(--error);
  padding: 11px 18px; border-radius: 10px; font-weight: 600; cursor: pointer;
  font-size: 14px; font-family: var(--font); transition: background 0.15s, color 0.15s;
}
.stop-btn:hover { background: var(--error); color: #fff; }

/* Sidebar "upload to project" button */
.upload-to-project-btn {
  display: block; width: 100%; margin-top: 8px;
  padding: 9px 12px; background: transparent; color: var(--accent);
  border: 1px dashed var(--accent); border-radius: 10px;
  font-size: 13px; font-weight: 600; font-family: var(--font);
  cursor: pointer; transition: all 0.15s;
}
.upload-to-project-btn:hover { background: var(--accent-light); }

/* Upload modal */
.upload-modal-backdrop, .doc-viewer-backdrop {
  display: none; position: fixed; inset: 0;
  background: rgba(26, 26, 46, 0.4); z-index: 150;
  -webkit-backdrop-filter: blur(3px); backdrop-filter: blur(3px);
}
.upload-modal-backdrop.active, .doc-viewer-backdrop.active { display: block; }
.upload-modal {
  display: none; position: fixed; z-index: 151;
  top: 50%; left: 50%; transform: translate(-50%, -50%);
  background: var(--surface); border: 1px solid var(--border); border-radius: 16px;
  padding: 24px; width: 90vw; max-width: 460px;
  box-shadow: 0 20px 60px rgba(26,26,46,0.2);
}
.upload-modal.open { display: block; }
.upload-modal h3 { font-family: var(--serif); font-size: 20px; margin-bottom: 8px; }
.upload-modal select, .upload-modal input[type=file] {
  width: 100%; padding: 10px 12px; border: 1px solid var(--border);
  border-radius: 8px; background: var(--surface2); color: var(--text);
  font-family: var(--font); font-size: 14px;
}
.upload-modal select:focus, .upload-modal input:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: transparent; }
.upload-modal-actions { display: flex; gap: 10px; justify-content: flex-end; margin-top: 18px; }
.upload-modal-actions button {
  padding: 9px 18px; border-radius: 8px; font-family: var(--font); font-size: 14px; cursor: pointer;
}
#upload-modal-cancel { background: transparent; border: 1px solid var(--border-strong); color: var(--text-dim); }
#upload-modal-cancel:hover { color: var(--text); border-color: var(--accent); }
#upload-modal-submit { background: var(--accent); color: var(--accent-ink); border: none; font-weight: 600; }
#upload-modal-submit:hover { background: var(--accent-hover); }
#upload-modal-submit:disabled { opacity: 0.5; cursor: not-allowed; }

/* Project documents panel */
.project-docs {
  border-bottom: 1px solid var(--border); background: var(--surface2);
  padding: 10px 22px;
}
.project-docs-head {
  display: flex; align-items: center; gap: 10px; margin-bottom: 6px;
  font-family: var(--font); font-size: 13px;
}
.docs-count { color: var(--text-muted); font-family: var(--mono); font-size: 12px; }
.docs-upload-btn {
  margin-left: auto; background: transparent; color: var(--accent);
  border: 1px solid var(--accent); border-radius: 6px; padding: 4px 10px;
  font-size: 12px; font-weight: 600; cursor: pointer;
}
.docs-upload-btn:hover { background: var(--accent-light); }
.docs-list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 2px; }
.doc-item {
  display: flex; align-items: center; gap: 10px;
  padding: 6px 10px; border-radius: 6px; background: var(--surface);
  border: 1px solid var(--border);
}
.doc-link { color: var(--text); font-size: 13px; flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.doc-link:hover { color: var(--accent); }
.doc-size { font-family: var(--mono); font-size: 11px; color: var(--text-muted); }
.doc-delete {
  background: transparent; border: none; color: var(--text-muted);
  font-size: 16px; cursor: pointer; padding: 2px 6px; border-radius: 4px;
}
.doc-delete:hover { color: var(--error); background: #fdf0ee; }

/* Doc viewer */
.doc-viewer {
  display: none; position: fixed; z-index: 151;
  top: 50%; left: 50%; transform: translate(-50%, -50%);
  background: var(--surface); border: 1px solid var(--border); border-radius: 16px;
  width: 90vw; max-width: 820px; max-height: 85vh;
  box-shadow: 0 20px 60px rgba(26,26,46,0.2); overflow: hidden;
  display: none; flex-direction: column;
}
.doc-viewer.open { display: flex; }
.doc-viewer-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 18px; border-bottom: 1px solid var(--border);
  background: var(--surface2);
}
.doc-viewer-head strong { font-family: var(--font); font-size: 14px; }
.doc-viewer-head button { background: transparent; border: none; color: var(--text-dim); font-size: 18px; cursor: pointer; padding: 4px 8px; border-radius: 6px; }
.doc-viewer-head button:hover { color: var(--text); background: var(--surface3); }
#doc-viewer-body {
  flex: 1; overflow-y: auto; -webkit-overflow-scrolling: touch;
  padding: 18px 22px; margin: 0;
  font-family: var(--mono); font-size: 12px; line-height: 1.55;
  white-space: pre-wrap; word-wrap: break-word;
  background: var(--bg);
}

.attach-btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 12px; border-radius: 8px;
  background: var(--surface2); border: 1px solid var(--border);
  color: var(--text-dim); font-size: 13px; cursor: pointer;
  transition: all 0.15s;
}
.attach-btn:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-light); }
.upload-status {
  font-size: 12px; color: var(--text-dim); font-family: var(--mono);
  max-width: 220px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}

/* ── Settings / Admin tables (reused from hub settings) ────────────────────── */
.admin-page { padding: 0; background: var(--bg); }
.admin-header {
  background: var(--surface); border-bottom: 1px solid var(--border);
  padding: 20px 32px; display: flex; align-items: center; justify-content: space-between;
}
.admin-header h1 { font-size: 22px; font-family: var(--serif); }
.admin-header button {
  background: transparent; border: 1px solid var(--border-strong); color: var(--text-dim);
  padding: 7px 14px; border-radius: 8px; cursor: pointer; font-family: var(--font); font-size: 13px;
}
.admin-header button:hover { color: var(--text); border-color: var(--accent); }
.admin-section { padding: 28px 32px; border-bottom: 1px solid var(--border); max-width: 1100px; }
.admin-section h2 { font-size: 18px; margin-bottom: 14px; font-family: var(--serif); }
.admin-table {
  width: 100%; border-collapse: separate; border-spacing: 0;
  font-size: 13px; margin-bottom: 20px;
  background: var(--surface); border: 1px solid var(--border); border-radius: 12px; overflow: hidden;
}
.admin-table th {
  text-align: left; padding: 10px 14px; color: var(--text-dim);
  background: var(--surface2); font-weight: 600; font-size: 11px;
  text-transform: uppercase; letter-spacing: 0.06em;
  border-bottom: 1px solid var(--border);
}
.admin-table td { padding: 10px 14px; border-bottom: 1px solid var(--border); vertical-align: top; }
.admin-table tr:last-child td { border-bottom: none; }
.admin-table input, .admin-table textarea, .admin-table select {
  background: var(--surface2); border: 1px solid var(--border); color: var(--text);
  padding: 7px 10px; border-radius: 7px; font-family: var(--font); font-size: 13px;
}
.admin-table input:focus, .admin-table textarea:focus {
  outline: 2px solid var(--accent); outline-offset: 1px; border-color: transparent;
}
.admin-table button {
  background: var(--accent); color: var(--accent-ink); border: none;
  padding: 7px 14px; border-radius: 7px; cursor: pointer; font-weight: 600; font-size: 13px;
  font-family: var(--font);
}
.admin-table button:hover { background: var(--accent-hover); }
.admin-table form[action*="/delete"] button {
  background: transparent; color: var(--error); border: 1px solid var(--border-strong);
}
.admin-table form[action*="/delete"] button:hover { background: #fdf0ee; border-color: var(--error); }

.add-form { margin-top: 16px; }
.add-form summary {
  cursor: pointer; color: var(--accent); font-size: 14px; font-weight: 600;
  padding: 8px 0;
}
.add-form form {
  margin-top: 12px; display: flex; flex-direction: column; gap: 10px;
  max-width: 560px; padding: 18px; background: var(--surface);
  border: 1px solid var(--border); border-radius: 12px;
}
.add-form input, .add-form select, .add-form textarea {
  background: var(--surface2); border: 1px solid var(--border); color: var(--text);
  padding: 9px 12px; border-radius: 8px; font-family: var(--font); font-size: 14px;
}
.add-form input:focus, .add-form select:focus, .add-form textarea:focus {
  outline: 2px solid var(--accent); outline-offset: 1px; border-color: transparent;
}
.add-form button {
  background: var(--accent); color: var(--accent-ink); border: none; padding: 10px 22px;
  border-radius: 8px; cursor: pointer; font-weight: 600; align-self: flex-start;
  font-family: var(--font); font-size: 14px;
}
.add-form button:hover { background: var(--accent-hover); }

/* ── Mobile menu ───────────────────────────────────────────────────────────── */
.mobile-menu-btn {
  display: none; background: var(--surface2); border: 1px solid var(--border);
  color: var(--text); padding: 8px 12px; border-radius: 8px; cursor: pointer;
  font-size: 16px; line-height: 1;
  -webkit-tap-highlight-color: transparent;
}
.mobile-menu-btn:active { background: var(--surface3); }

.sidebar-overlay {
  display: none; position: fixed; inset: 0;
  background: rgba(26, 26, 46, 0.4); z-index: 90;
  -webkit-backdrop-filter: blur(2px); backdrop-filter: blur(2px);
}

.mobile-topbar { display: none; }

/* ── Responsive / mobile ───────────────────────────────────────────────────── */
@media (max-width: 768px) {
  body { font-size: 14px; }

  .mobile-menu-btn { display: inline-flex; align-items: center; justify-content: center; }

  .mobile-topbar {
    display: flex; align-items: center; gap: 12px;
    padding: 12px 16px; border-bottom: 1px solid var(--border);
    background: var(--surface);
    padding-top: calc(12px + env(safe-area-inset-top, 0px));
  }

  .sidebar {
    position: fixed; top: 0; left: 0;
    height: 100vh; height: 100dvh;
    transform: translateX(-100%);
    transition: transform 0.25s ease;
    z-index: 100;
    width: 82vw; max-width: 320px;
    box-shadow: 4px 0 24px rgba(26, 26, 46, 0.15);
  }
  .sidebar.open { transform: translateX(0); }
  .sidebar-overlay.active { display: block; }

  .main-area { width: 100%; }

  .chat-header {
    padding: 10px 14px;
    padding-top: calc(10px + env(safe-area-inset-top, 0px));
    gap: 10px; flex-wrap: wrap;
  }
  .chat-header h2 { font-size: 15px; flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .model-picker { width: 100%; order: 3; margin-left: 0; }
  .model-picker select { width: 100%; font-size: 14px; padding: 9px 12px; }

  .messages { padding: 14px; gap: 14px; }
  .message { max-width: 100%; }
  .message-user { max-width: 92%; }
  .message-user .message-content,
  .message-assistant .message-content { padding: 10px 14px; font-size: 14px; }
  .message-content pre { padding: 10px; font-size: 12px; }

  .message-meta { gap: 6px; }
  .model-tag, .search-tag, .cost-tag { font-size: 10px; padding: 2px 7px; }
  .export-btns { margin-left: 0; width: 100%; gap: 4px; }
  .export-btn { flex: 1; font-size: 12px; padding: 7px 8px; }

  .input-area { padding: 12px 14px; padding-bottom: calc(12px + env(safe-area-inset-bottom, 0px)); }
  #msg-input { font-size: 16px; padding: 11px 14px; } /* 16px prevents iOS Safari zoom */
  .input-controls { flex-wrap: wrap; gap: 8px; }
  #send-btn { padding: 11px 22px; font-size: 15px; flex: 1; min-height: 44px; }
  .stop-btn { padding: 11px 22px; font-size: 15px; flex: 1; min-height: 44px; }
  .sovereignty-toggle { font-size: 13px; }

  .welcome { padding: 32px 20px; }
  .welcome h2 { font-size: 22px; }
  .welcome p { font-size: 15px; }
  .hub-home { padding: 18px 14px 28px; gap: 20px; }
  .welcome-panel {
    padding: 24px 18px;
    grid-template-columns: 1fr;
    gap: 20px;
    border-radius: 18px;
  }
  .welcome-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .welcome-stat {
    min-height: 0;
    padding: 14px 12px;
  }
  .welcome-stat strong { font-size: 22px; }
  .section-heading h3 { font-size: 19px; }
  .project-button-row,
  .project-grid,
  .recent-docs {
    gap: 10px;
  }
  .project-cta,
  .project-card,
  .recent-doc,
  .empty-state {
    border-radius: 14px;
  }
  .project-card-actions {
    flex-direction: column;
  }
  .project-card-btn {
    width: 100%;
  }

  /* Admin */
  .admin-header {
    padding: 14px 16px;
    padding-top: calc(14px + env(safe-area-inset-top, 0px));
    flex-direction: column; align-items: flex-start; gap: 10px;
  }
  .admin-header h1 { font-size: 18px; }
  .admin-section { padding: 20px 16px; }
  .admin-table { display: block; overflow-x: auto; white-space: nowrap; -webkit-overflow-scrolling: touch; }
  .add-form form { max-width: 100%; padding: 14px; }
  .add-form input, .add-form select, .add-form textarea { font-size: 16px; }

  .login-box { padding: 28px 22px; }
}

@media (max-width: 420px) {
  .sidebar-header { padding: 16px 14px 12px; }
  .welcome { padding: 24px 16px; }
  .welcome h2 { font-size: 20px; }
  .hub-home { padding: 14px 12px 24px; }
  .welcome-stats { grid-template-columns: 1fr; }
  .project-cta { min-width: 0; }
  .recent-doc {
    flex-direction: column;
    align-items: start;
  }
  .chat-header h2 { font-size: 14px; }
  .messages { padding: 12px; }
  .input-area { padding: 10px 12px; padding-bottom: calc(10px + env(safe-area-inset-bottom, 0px)); }
}

/* iOS Safari: fix keyboard-shift viewport quirks */
@supports (-webkit-touch-callout: none) {
  .hub-page { height: -webkit-fill-available; }
  .sidebar { height: -webkit-fill-available; }
}