:root {
  --bg: #f4f6f8; --card: #ffffff; --text: #17202a; --muted: #5d6b78; --line: #dde3e9;
  --primary: #1f6feb; --primary-text: #ffffff; --danger: #c62828; --ok: #1b7f3b; --warn: #b26a00;
  --ok-bg: #e5f4ea; --warn-bg: #fff3dc; --bad-bg: #fde8e8; --off-bg: #eceff2;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1419; --card: #182028; --text: #e6edf3; --muted: #9aa7b4; --line: #2b3640;
    --primary: #4c8dff; --danger: #ff6b6b; --ok: #5fd38a; --warn: #ffb547;
    --ok-bg: #173826; --warn-bg: #3a2c10; --bad-bg: #3d1a1a; --off-bg: #232c35;
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
html, body { overflow-x: hidden; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 15px/1.5 "Noto Sans Bengali", "Nirmala UI", "Hind Siliguri", system-ui, sans-serif;
}
[hidden] { display: none !important; }
h1 { margin: 0 0 4px; font-size: 24px; }
h2 { margin: 0 0 12px; font-size: 19px; }
h3 { margin: 18px 0 8px; font-size: 15px; color: var(--muted); font-weight: 600; }
.muted, .hint { color: var(--muted); }
.hint { font-size: 13px; margin: 4px 0 0; }
.error { color: var(--danger); min-height: 1.2em; margin: 8px 0; }

input, select, textarea, button, .button {
  font: inherit; color: inherit; border-radius: 8px; border: 1px solid var(--line); background: var(--card);
}
input, select, textarea { width: 100%; padding: 9px 11px; }
textarea { font-family: ui-monospace, Consolas, monospace; font-size: 13px; word-break: break-all; resize: vertical; }
label { display: block; margin: 10px 0 0; font-weight: 600; font-size: 14px; }
label input, label select { margin-top: 4px; font-weight: 400; }
button, .button { padding: 9px 14px; cursor: pointer; text-decoration: none; display: inline-block; white-space: nowrap; }
button.primary, .button.primary { background: var(--primary); border-color: var(--primary); color: var(--primary-text); }
button.danger { border-color: var(--danger); color: var(--danger); }
button.link { border: none; background: none; color: var(--primary); padding: 6px 8px; }
button:disabled { opacity: .55; cursor: default; }

.login { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 20px; }
.login-card { width: min(380px, 100%); }
.login-card button { width: 100%; margin-top: 8px; }

.top {
  display: flex; align-items: center; gap: 12px; padding: 10px 16px; background: var(--card);
  border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 2; flex-wrap: wrap;
}
.top .who { margin-left: auto; color: var(--muted); font-size: 14px; }
.tabs { display: flex; gap: 4px; }
.tabs button { border: none; background: none; padding: 6px 10px; border-radius: 6px; }
.tabs button.on { background: var(--off-bg); font-weight: 600; }

.page { max-width: 980px; margin: 0 auto; padding: 16px; }
.bar { display: flex; gap: 10px; }
.bar input { flex: 1; }
.chips { display: flex; gap: 6px; flex-wrap: wrap; margin: 12px 0 4px; }
.chips button { padding: 5px 12px; border-radius: 999px; font-size: 14px; }
.chips button.on { background: var(--text); color: var(--bg); border-color: var(--text); }

.list { display: grid; gap: 8px; margin-top: 8px; }
.item {
  background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px;
  display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 2px 12px; min-width: 0; cursor: pointer; text-align: left; width: 100%;
}
.item:hover { border-color: var(--primary); }
.item { white-space: normal; }
.item .name { font-weight: 600; overflow-wrap: anywhere; }
.item .actions { grid-column: 1 / -1; }
.item .sub { color: var(--muted); font-size: 13px; grid-column: 1 / -1; overflow-wrap: anywhere; }
.item .badge { grid-row: 1; grid-column: 2; align-self: start; }
.badge { font-size: 13px; padding: 3px 10px; border-radius: 999px; white-space: nowrap; }
.b-ok { background: var(--ok-bg); color: var(--ok); }
.b-warn { background: var(--warn-bg); color: var(--warn); }
.b-bad { background: var(--bad-bg); color: var(--danger); }
.b-off { background: var(--off-bg); color: var(--muted); }

dialog {
  border: 1px solid var(--line); border-radius: 12px; padding: 18px; width: min(560px, calc(100vw - 24px));
  background: var(--card); color: var(--text); max-height: calc(100vh - 24px);
}
dialog::backdrop { background: rgba(0, 0, 0, .45); }
.dlg-head { display: flex; justify-content: space-between; align-items: start; gap: 8px; }
.actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 14px; flex-wrap: wrap; }
.actions.left { justify-content: flex-start; margin-top: 8px; }
.row { display: flex; gap: 8px; }
.row input, .row select { flex: 1; }
.facts { display: grid; grid-template-columns: max-content 1fr; gap: 4px 14px; margin: 0; font-size: 14px; }
.facts dt { color: var(--muted); }
.facts dd { margin: 0; overflow-wrap: anywhere; }
.keybox { margin-top: 14px; padding: 12px; border-radius: 10px; background: var(--off-bg); }
.keybox h3 { margin-top: 0; }
.events { list-style: none; padding: 0; margin: 0; font-size: 13px; color: var(--muted); }
.events li { padding: 4px 0; border-top: 1px solid var(--line); }

.toast {
  position: fixed; left: 50%; bottom: 20px; transform: translateX(-50%); background: var(--text); color: var(--bg);
  padding: 9px 16px; border-radius: 8px; opacity: 0; pointer-events: none; transition: opacity .2s; max-width: calc(100vw - 32px);
}
.toast.show { opacity: 1; }

@media (max-width: 560px) {
  .bar { flex-direction: column; }
  .top .who, .top strong { display: none; }
  .top { gap: 8px; }
  .top .link { margin-left: auto; }
  .row { flex-direction: column; }
}