:root {
  --bg: #0e1116;
  --panel: #161b22;
  --panel-2: #1c232d;
  --border: #2a3340;
  --text: #e6edf3;
  --muted: #8b98a9;
  --accent: #4c8dff;
  --accent-soft: #1e3355;
  --busy: #4c8dff;
  --tentative: #d8a63c;
  --free: #3fb950;
  --oof: #a371f7;
  --private: #8b98a9;
  --danger: #f85149;
  --radius: 12px;
  --shadow: 0 8px 24px rgba(0, 0, 0, .35);
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

.banner {
  background: var(--accent-soft);
  border-bottom: 1px solid var(--accent);
  padding: 10px 20px;
  font-size: 14px;
}
.banner.error { background: #3a1d1d; border-color: var(--danger); }

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding: 18px 24px;
  background: linear-gradient(180deg, var(--panel), var(--bg));
  border-bottom: 1px solid var(--border);
}

.brand { display: flex; align-items: center; gap: 14px; }
.logo { font-size: 30px; }
.topbar h1 { margin: 0; font-size: 22px; letter-spacing: -.01em; }
.subtitle { margin: 2px 0 0; color: var(--muted); font-size: 13px; }

.status { display: flex; align-items: center; gap: 10px; color: var(--muted); font-size: 13px; }
.dot { width: 9px; height: 9px; border-radius: 50%; background: var(--muted); }
.dot.ok { background: var(--free); box-shadow: 0 0 0 3px rgba(63, 185, 80, .18); }
.dot.stale { background: var(--tentative); }
.dot.error { background: var(--danger); }

.toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  padding: 12px 24px;
  border-bottom: 1px solid var(--border);
  background: var(--panel);
  position: sticky;
  top: 0;
  z-index: 10;
}

.views { display: flex; background: var(--panel-2); border: 1px solid var(--border); border-radius: 999px; padding: 3px; }
.tab {
  border: 0; background: transparent; color: var(--muted);
  padding: 6px 16px; border-radius: 999px; cursor: pointer; font-size: 14px;
}
.tab.active { background: var(--accent); color: #fff; }

.search {
  flex: 1 1 200px;
  min-width: 160px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 999px;
  padding: 8px 14px;
  font-size: 14px;
}
.search:focus { outline: none; border-color: var(--accent); }

.range { display: flex; align-items: center; gap: 6px; }
.range-label { min-width: 170px; text-align: center; color: var(--muted); font-size: 14px; }

.btn {
  background: var(--accent);
  border: 1px solid var(--accent);
  color: #fff;
  border-radius: 8px;
  padding: 7px 12px;
  font-size: 13px;
  cursor: pointer;
}
.btn:hover { filter: brightness(1.08); }
.btn.ghost { background: transparent; color: var(--muted); border-color: var(--border); }
.btn.ghost:hover { color: var(--text); border-color: var(--accent); }
.btn[disabled] { opacity: .5; cursor: default; }
.subscribe { text-decoration: none; }

main { flex: 1; padding: 20px 24px 40px; max-width: 1100px; width: 100%; margin: 0 auto; }

.day { margin-bottom: 22px; }
.day-head {
  display: flex; align-items: baseline; gap: 10px;
  margin: 0 0 8px; padding-bottom: 6px;
  border-bottom: 1px solid var(--border);
}
.day-head h2 { font-size: 15px; margin: 0; }
.day-head.is-today h2 { color: var(--accent); }
.day-head .count { color: var(--muted); font-size: 12px; }

.event {
  display: flex; gap: 14px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-left: 4px solid var(--busy);
  border-radius: var(--radius);
  padding: 12px 14px;
  margin-bottom: 8px;
  box-shadow: var(--shadow);
}
.event.show-free { border-left-color: var(--free); }
.event.show-tentative { border-left-color: var(--tentative); }
.event.show-oof { border-left-color: var(--oof); }
.event.show-workingelsewhere { border-left-color: var(--free); }
.event.is-private { border-left-color: var(--private); opacity: .92; }

.event .time { flex: 0 0 128px; color: var(--muted); font-size: 13px; font-variant-numeric: tabular-nums; }
.event .time .all-day { color: var(--accent); font-weight: 600; }
.event .body { flex: 1; min-width: 0; }
.event .title { font-weight: 600; margin: 0 0 3px; word-break: break-word; }
.event .meta { color: var(--muted); font-size: 13px; display: flex; flex-wrap: wrap; gap: 4px 12px; }
.event .desc { color: var(--muted); font-size: 13px; margin-top: 6px; white-space: pre-wrap; }
.event .chip {
  display: inline-block; font-size: 11px; padding: 1px 8px; border-radius: 999px;
  background: var(--panel-2); border: 1px solid var(--border); color: var(--muted);
}
.event a.join { font-size: 12px; }

.empty { color: var(--muted); text-align: center; padding: 60px 20px; }

/* Month grid */
.month-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 6px; }
.month-dow { color: var(--muted); font-size: 12px; text-align: center; padding: 4px 0; text-transform: uppercase; letter-spacing: .04em; }
.month-cell {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  min-height: 104px;
  padding: 6px;
  overflow: hidden;
}
.month-cell.out { opacity: .42; }
.month-cell.today { border-color: var(--accent); }
.month-cell .num { font-size: 12px; color: var(--muted); margin-bottom: 4px; }
.month-cell.today .num { color: var(--accent); font-weight: 700; }
.month-ev {
  font-size: 11px; line-height: 1.3; margin-bottom: 3px;
  padding: 2px 5px; border-radius: 5px;
  background: var(--accent-soft); border-left: 3px solid var(--busy);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  cursor: pointer;
}
.month-ev.free { background: rgba(63,185,80,.14); border-left-color: var(--free); }
.month-ev.tentative { background: rgba(216,166,60,.16); border-left-color: var(--tentative); }
.month-ev.private { background: rgba(139,152,169,.16); border-left-color: var(--private); }
.month-more { font-size: 10px; color: var(--muted); }

.footer {
  text-align: center; color: var(--muted); font-size: 12px;
  padding: 18px; border-top: 1px solid var(--border);
}
.footer .sep { margin: 0 6px; }

@media (max-width: 640px) {
  .event { flex-direction: column; gap: 4px; }
  .event .time { flex-basis: auto; }
  .range-label { min-width: 120px; }
}

/* ---- auth pages ---- */
.auth-body {
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.auth-card {
  width: 100%;
  max-width: 420px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 26px 30px;
  box-shadow: var(--shadow);
}
.auth-brand { display: flex; align-items: center; gap: 12px; margin-bottom: 6px; }
.auth-brand h1 { font-size: 20px; margin: 0; }
.auth-card h2 { font-size: 18px; margin: 14px 0 8px; }
.auth-card p { margin: 8px 0; }
.auth-foot { color: var(--muted); font-size: 12px; text-align: center; margin-top: 18px; }
.auth-link { margin-top: 14px !important; font-size: 14px; }

.field { display: block; margin: 12px 0; }
.field > span { display: block; color: var(--muted); font-size: 13px; margin-bottom: 5px; }
.field input,
.inline-form input,
.row-form input {
  width: 100%;
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 8px;
  padding: 9px 12px;
  font-size: 14px;
}
.field input:focus, .inline-form input:focus, .row-form input:focus {
  outline: none; border-color: var(--accent);
}
.auth-card .btn { width: 100%; margin-top: 6px; padding: 10px; font-size: 14px; }

.error {
  background: #3a1d1d;
  border: 1px solid var(--danger);
  color: #ffd7d5;
  border-radius: 8px;
  padding: 9px 12px;
  font-size: 13px;
  margin: 10px 0;
}
.muted { color: var(--muted); font-size: 13px; }
.secret code {
  display: inline-block;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 10px;
  letter-spacing: .06em;
  word-break: break-all;
}
.qr { background: #fff; padding: 10px; border-radius: 10px; width: 210px; margin: 14px 0; }
.qr svg { width: 100%; height: auto; display: block; }

.whoami { color: var(--text); font-size: 13px; font-weight: 600; }

/* ---- admin ---- */
.admin-main { max-width: 1100px; width: 100%; margin: 0 auto; padding: 22px 24px 60px; }
.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  margin-bottom: 20px;
}
.panel h2 { margin: 0 0 12px; font-size: 16px; }
.inline-form { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.inline-form input { width: auto; flex: 1 1 180px; }
.check { color: var(--muted); font-size: 13px; display: flex; align-items: center; gap: 6px; }
.check input { width: auto; }
.table-wrap { overflow-x: auto; }
.admin-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.admin-table th, .admin-table td {
  text-align: left; padding: 10px 10px; border-bottom: 1px solid var(--border);
  vertical-align: top;
}
.admin-table th { color: var(--muted); font-weight: 600; }
.chip {
  display: inline-block; font-size: 11px; padding: 1px 8px; border-radius: 999px;
  background: var(--panel-2); border: 1px solid var(--border); color: var(--muted);
  margin-right: 4px;
}
.chip.ok { color: #7ee787; border-color: #2a5c33; }
.chip.off { color: #ff9b95; border-color: #6b2b2b; }
.chip.warn { color: var(--tentative); border-color: #5c4a1e; }
.feed-url { width: 100%; min-width: 220px; font-size: 12px; }
.row-form { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 6px; }
.row-form input { width: auto; flex: 1 1 150px; }
.btn.danger { color: var(--danger); border-color: #6b2b2b; }