:root {
  --bg: #0b1020;
  --surface: #161f38;
  --surface-2: #1d2947;
  --border: #26324f;
  --text: #e8edf9;
  --muted: #8ea0c4;
  --accent: #4f7cff;
  --ok: #2fbf71;
  --warn: #f0a92c;
  --danger: #f0554b;
  --radius: 12px;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f4f6fb;
    --surface: #ffffff;
    --surface-2: #f0f3fa;
    --border: #dde3ef;
    --text: #16203a;
    --muted: #64738f;
  }
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.5;
}

a { color: var(--accent); }

.wrap { max-width: 880px; margin: 0 auto; padding: 20px 16px 60px; }

header.top {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 18px;
}
header.top h1 { font-size: 19px; margin: 0; font-weight: 700; letter-spacing: -0.01em; }
header.top .spacer { flex: 1; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
}
.card + .card { margin-top: 12px; }

.stack { display: flex; flex-direction: column; gap: 10px; }
.row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.spread { display: flex; align-items: center; justify-content: space-between; gap: 10px; }

input, select {
  width: 100%;
  padding: 9px 11px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 15px;
  outline: none;
}
input:focus, select:focus { border-color: var(--accent); }

label { display: block; font-size: 12px; font-weight: 600; color: var(--muted); margin-bottom: 5px; }
.field { margin-bottom: 12px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 9px 15px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  border-radius: 8px;
  font-size: 14px; font-weight: 600;
  cursor: pointer;
  color: var(--text);
}
.btn:hover { filter: brightness(1.1); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.danger { background: transparent; border-color: var(--danger); color: var(--danger); }
.btn.sm { padding: 5px 10px; font-size: 12.5px; }

.badge {
  display: inline-flex; align-items: center; padding: 2px 9px;
  border-radius: 20px; font-size: 11.5px; font-weight: 650;
  background: var(--surface-2); color: var(--muted);
}
.badge.ok { background: rgba(47, 191, 113, 0.14); color: var(--ok); }
.badge.warn { background: rgba(240, 169, 44, 0.14); color: var(--warn); }
.badge.danger { background: rgba(240, 85, 75, 0.14); color: var(--danger); }

.muted { color: var(--muted); }
.small { font-size: 12.5px; }
.mono { font-family: ui-monospace, 'SF Mono', Menlo, monospace; font-size: 12.5px; }

.empty { text-align: center; padding: 40px 20px; color: var(--muted); }

.chat-list { max-height: 260px; overflow: auto; border: 1px solid var(--border); border-radius: 8px; }
.chat-list .item { padding: 8px 11px; border-bottom: 1px solid var(--border); display: flex; justify-content: space-between; gap: 8px; }
.chat-list .item:last-child { border-bottom: none; }

#unlock { max-width: 380px; margin: 15vh auto; }