:root {
  --bg: #f5f6f8; --panel: #ffffff; --ink: #1c2330; --muted: #5d6675; --line: #dde1e7;
  --accent: #1f5fa8; --accent-ink: #ffffff; --mine: #1f5fa8; --other: #6b7f99;
  --danger: #b3261e; --radius: 10px;
  --fc-border-color: var(--line); --fc-today-bg-color: #eef4fb; --fc-now-indicator-color: #d0342c;
  --fc-event-bg-color: var(--other); --fc-event-border-color: var(--other);
  --fc-button-bg-color: #ffffff; --fc-button-border-color: var(--line); --fc-button-text-color: var(--ink);
  --fc-button-hover-bg-color: #eef1f5; --fc-button-hover-border-color: var(--line);
  --fc-button-active-bg-color: var(--accent); --fc-button-active-border-color: var(--accent);
  --fc-page-bg-color: var(--panel); --fc-list-event-hover-bg-color: #eef1f5;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14181f; --panel: #1c222b; --ink: #e6e9ee; --muted: #9aa4b2; --line: #313a47;
    --accent: #5b9be0; --accent-ink: #0d1117; --mine: #3d7fc9; --other: #56657a;
    --fc-today-bg-color: #1f2a38; --fc-button-bg-color: #232a35; --fc-button-text-color: var(--ink);
    --fc-button-hover-bg-color: #2b3441; --fc-neutral-bg-color: #232a35; --fc-list-event-hover-bg-color: #2b3441;
  }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; background: var(--bg); color: var(--ink);
  font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
a { color: var(--accent); }
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 10px 16px; background: var(--panel); border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: baseline; gap: 10px; }
.brand .org { font-weight: 700; letter-spacing: .06em; color: var(--accent); }
.brand .room { font-size: 1.15rem; font-weight: 600; }
.who { display: flex; gap: 14px; align-items: center; font-size: .92rem; }
.badge { font-size: .72rem; padding: 1px 6px; border-radius: 99px; background: var(--line); color: var(--muted); }
.wrap { max-width: 1200px; margin: 0 auto; padding: 14px 16px 40px; }
.toolbar { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 14px; margin-bottom: 12px; }
.hint { color: var(--muted); font-size: .9rem; flex: 1; min-width: 200px; }
#calendar { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 10px; }
.fc .fc-toolbar-title { font-size: 1.15rem; }
.fc .fc-button { font-size: .88rem; text-transform: capitalize; box-shadow: none !important; }
.fc .fc-button-primary:not(:disabled).fc-button-active { color: var(--accent-ink); }
.fc .fc-timegrid-slot { height: 1.8em; }
.fc-event.mine { --fc-event-bg-color: var(--mine); background: var(--mine); border-color: var(--mine); }
.fc-daygrid-event.mine .ev-dot, .fc-list-event.mine .fc-list-event-dot { border-color: var(--mine); background: var(--mine); }
.fc-daygrid-event .ev-dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%;
  background: var(--other); margin-right: 4px; }
.fc-daygrid-event { color: var(--ink); }
.ev { padding: 1px 3px; overflow: hidden; line-height: 1.25; }
.ev-time { font-size: .78rem; opacity: .9; }
.ev-title { font-weight: 600; font-size: .86rem; }
.ev-owner { font-size: .76rem; opacity: .85; }
.fc-list .ev-owner { color: var(--muted); }
.btn { display: inline-block; padding: 8px 14px; border-radius: 8px; border: 1px solid var(--line);
  background: var(--panel); color: var(--ink); font: inherit; cursor: pointer; text-decoration: none; }
.btn:hover { background: var(--bg); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); font-weight: 600; }
.btn.primary:hover { filter: brightness(1.07); }
.btn.danger { color: var(--danger); border-color: var(--danger); }
.btn.subtle { border-color: transparent; color: var(--accent); }
.btn.big { padding: 12px 22px; font-size: 1.05rem; }
.btn:disabled { opacity: .6; cursor: wait; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.narrow { max-width: 460px; margin: 60px auto; }
dialog { border: 1px solid var(--line); border-radius: 14px; padding: 20px 22px; width: min(560px, calc(100vw - 32px));
  background: var(--panel); color: var(--ink); box-shadow: 0 20px 50px rgba(0,0,0,.25); }
dialog::backdrop { background: rgba(10, 15, 25, .45); }
dialog h2 { margin: 0 0 12px; font-size: 1.2rem; }
form label { display: block; margin: 0 0 10px; font-size: .9rem; color: var(--muted); }
form input:not([type=radio]):not([type=checkbox]), form select, form textarea, input.copy {
  display: block; width: 100%; margin-top: 3px; padding: 7px 9px; font: inherit; color: var(--ink);
  background: var(--bg); border: 1px solid var(--line); border-radius: 7px; }
.row { display: grid; grid-template-columns: 1.3fr 1fr 1fr; gap: 10px; }
.hm { display: flex; align-items: center; gap: 3px; color: var(--ink); }
.hm select { margin-top: 3px; padding-right: 2px; }
fieldset { border: 1px solid var(--line); border-radius: 9px; padding: 8px 12px 4px; margin: 0 0 12px; }
legend { font-size: .85rem; color: var(--muted); padding: 0 4px; }
.days { display: flex; flex-wrap: wrap; gap: 4px 12px; margin: 8px 0; }
.days label, .scope label, .ends > label:not(.small) { display: flex; align-items: center; gap: 6px; color: var(--ink); margin: 6px 0; }
.ends input[type=date], .ends input[type=number] { display: inline-block !important; width: auto !important; margin: 0 !important; }
.ends input[type=number] { width: 5em !important; }
.ends select { margin-top: 4px; }
.small { font-size: .82rem; }
.muted { color: var(--muted); }
.error { background: #fdecea; color: #7a1a14; border-radius: 8px; padding: 8px 12px; margin: 6px 0 10px; font-size: .9rem; }
@media (prefers-color-scheme: dark) { .error { background: #3a1d1b; color: #f5c6c2; } }
.clashes { margin: 6px 0 0; padding-left: 18px; }
.actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 14px; align-items: center; }
.actions .spacer { flex: 1; }
.detail .when { font-size: 1.05rem; font-weight: 600; margin: 0 0 6px; }
.detail p { margin: 4px 0; }
.detail .notes { white-space: pre-wrap; margin-top: 10px; }
@media (max-width: 700px) {
  .row { grid-template-columns: 1fr 1fr; }
  .row label:first-child { grid-column: 1 / -1; }
  .hint { display: none; }
  #calendar { padding: 4px; }
  .fc .fc-toolbar { gap: 6px; }
  .brand .room { font-size: 1rem; }
}