/* PWA «Мост» для телефона: тёмная тема в духе приложения. Стили чата: bridge-ui.css (копия из приложения). */
:root {
  color-scheme: dark;
  --fg: #dfe3f0; --muted: #9aa0b8; --accent: #2b3590; --accent-h: #3541a8; --accent-l: #9aa6ff;
  --focus: #8591f0; --focus-ring: rgba(133, 145, 240, 0.28);
  --bg: rgba(5, 7, 14, 0.40); --title: rgba(255, 255, 255, 0.07);
  --g-line: rgba(255, 255, 255, 0.12); --g-line-soft: rgba(255, 255, 255, 0.10);
  --r-ctl: 12px; --r-sm: 8px;
  --ui: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --mono: ui-monospace, 'Cascadia Code', Consolas, 'SF Mono', Menlo, monospace;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  display: flex; flex-direction: column; min-height: 100dvh; height: 100dvh; overflow: hidden;
  padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
  background: radial-gradient(1200px 700px at 15% -10%, #1d2150 0%, transparent 60%), radial-gradient(900px 600px at 100% 110%, #231a4a 0%, transparent 55%), #0b0d1a;
  color: var(--fg); font: 15px/1.45 var(--ui); -webkit-text-size-adjust: 100%;
}
[hidden] { display: none !important; }
h1 { margin: 0; font-size: 18px; font-weight: 700; }
.muted { color: var(--muted); }
.spacer { flex: 1; }
button, input { font: inherit; }
button { cursor: pointer; }

#app { flex: 1; min-height: 0; display: flex; flex-direction: column; }
#app > header { flex: none; display: flex; align-items: center; gap: 8px; padding: 10px 14px; border-bottom: 1px solid var(--g-line-soft); }
#chat, #ai { flex: 1; min-height: 0; padding: 10px 12px 12px; }
.tabs { display: flex; gap: 2px; padding: 3px; border: 1px solid var(--g-line-soft); border-radius: 12px; background: rgba(255, 255, 255, 0.04); }
.tab { min-height: 36px; padding: 0 12px; border: 0; border-radius: 9px; background: transparent; color: var(--muted); font-size: 14px; }
.tab.on { background: var(--accent); color: #fff; font-weight: 600; }
.tab:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }
.tab.attn::after { content: ''; display: inline-block; width: 8px; height: 8px; margin-left: 6px; border-radius: 50%; background: #e0b93b; }
.ghost { min-height: 40px; padding: 0 12px; border: 1px solid var(--g-line-soft); border-radius: var(--r-ctl); background: transparent; color: var(--muted); }
.ghost:hover { color: var(--fg); background: rgba(255, 255, 255, 0.07); }
button:focus-visible, input:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }

#login { flex: 1; display: flex; align-items: center; justify-content: center; padding: 20px; }
.card { width: min(420px, 100%); display: flex; flex-direction: column; gap: 10px; padding: 22px; border: 1px solid var(--g-line); border-radius: 20px;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.09) 0%, rgba(255, 255, 255, 0.02) 45%), rgba(16, 18, 36, 0.80); box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45); }
.card p { margin: 0; }
.card label { font-weight: 600; margin-top: 4px; }
.card input { min-height: 46px; padding: 8px 12px; border-radius: var(--r-ctl); border: 1px solid var(--g-line); background: var(--title); color: var(--fg); font-size: 16px; }
.card input:focus { outline: none; border-color: var(--focus); box-shadow: 0 0 0 3px var(--focus-ring); }
.card .primary { min-height: 46px; margin-top: 6px; border: 1px solid rgba(154, 166, 255, 0.35); border-radius: var(--r-ctl); background: var(--accent); color: #fff; font-weight: 600; }
.card .primary:hover { background: var(--accent-h); }
.error { color: #ffb4a6; font-size: 14px; }