:root {
  --bg: #f7f8fa;
  --surface: #ffffff;
  --border: #e2e5ea;
  --text: #1a1d23;
  --muted: #6b7280;
  --primary: #1f7a5c;
  --primary-dark: #16593f;
  --danger: #b3261e;
  --available: #1f7a5c;
  --unavailable: #b3261e;
  --radius: 10px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161a;
    --surface: #1c1f26;
    --border: #2c313a;
    --text: #eef0f3;
    --muted: #9aa1ac;
    --primary: #34a37a;
    --primary-dark: #2c8a68;
    --danger: #e35c53;
    --available: #34a37a;
    --unavailable: #e35c53;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.45;
}

.muted { color: var(--muted); }
.small { font-size: 0.85rem; }
.hidden { display: none !important; }

.topbar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 16px;
}
.topbar-inner {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
}
.topbar h1 { margin: 0; font-size: 1.3rem; }
.topbar p { margin: 4px 0 0; }
.whoami { display: flex; flex-direction: column; gap: 4px; font-size: 0.85rem; }
.whoami select { padding: 6px 8px; border-radius: 8px; border: 1px solid var(--border); background: var(--bg); color: var(--text); }

main {
  max-width: 900px;
  margin: 20px auto;
  padding: 0 16px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
}
.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 12px;
}
.card-header h2 { margin: 0; font-size: 1.05rem; }

.btn {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  padding: 7px 14px;
  border-radius: 8px;
  font-size: 0.85rem;
  cursor: pointer;
}
.btn:hover { border-color: var(--primary); }
.btn-ghost { background: transparent; }
.btn-primary { background: var(--primary); border-color: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-sm { padding: 4px 10px; font-size: 0.78rem; }
.btn-danger { color: var(--danger); border-color: var(--danger); }
.btn-danger:hover { background: var(--danger); color: white; }

.calendar-nav { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; }
#calendar-month-label { font-weight: 600; min-width: 120px; text-align: center; }

.calendar-weekdays {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  text-align: center;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--muted);
  padding: 4px 0;
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
}

.cal-day {
  min-height: 64px;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 4px 5px;
  text-align: left;
  background: var(--bg);
  color: var(--text);
  font: inherit;
  display: flex;
  flex-direction: column;
  gap: 3px;
  cursor: default;
}
.cal-day.other-month { opacity: 0.35; }
.cal-day.is-today { border-color: var(--primary); box-shadow: 0 0 0 1px var(--primary) inset; }
.cal-day-num { font-size: 0.78rem; font-weight: 600; }
.cal-day.friday.clickable {
  cursor: pointer;
  background: var(--surface);
}
.cal-day.friday.clickable:hover { border-color: var(--primary); }
.cal-day-summary { font-size: 0.7rem; line-height: 1.25; }
.cal-day-summary .name { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.cal-legend { margin-top: 10px; display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }

.modal-header { display: flex; align-items: center; justify-content: space-between; }
.modal-header h3 { margin: 0; }
.day-modal-box { max-width: 420px; }

.day-modal-date { font-weight: 600; margin: 0 0 10px; }
.day-modal-readonly-note { margin: 0 0 10px; }

.slots { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 10px; }
@media (max-width: 560px) { .slots { grid-template-columns: 1fr; } }
.slot label { display: block; font-size: 0.75rem; color: var(--muted); margin-bottom: 3px; }
.slot select, .slot input[type="text"] {
  width: 100%;
  padding: 6px 8px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-size: 0.9rem;
}

.meta-row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 10px; }
@media (max-width: 560px) { .meta-row { grid-template-columns: 1fr; } }

.avail-row { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; }
.avail-actions { display: flex; gap: 6px; }
.avail-chips { display: flex; flex-wrap: wrap; gap: 6px; flex: 1; }
.chip {
  font-size: 0.75rem;
  padding: 2px 9px;
  border-radius: 999px;
  border: 1px solid var(--border);
}
.chip.available { color: var(--available); border-color: var(--available); }
.chip.unavailable { color: var(--unavailable); border-color: var(--unavailable); text-decoration: line-through; }

.roster-list { display: flex; flex-direction: column; gap: 6px; }
.roster-group-title { font-size: 0.75rem; text-transform: uppercase; color: var(--muted); margin: 10px 0 4px; }
.roster-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  border-radius: 8px;
  border: 1px solid var(--border);
}
.roster-row.inactive { opacity: 0.55; }
.roster-name { font-weight: 500; }
.roster-meta { color: var(--muted); font-size: 0.8rem; }
.roster-row-actions { display: flex; gap: 6px; flex-shrink: 0; }

footer {
  max-width: 900px;
  margin: 0 auto 30px;
  padding: 0 16px;
  text-align: center;
}

.modal {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  z-index: 50;
}
/* Can be triggered from inside another open modal (e.g. entering the access
   code while the day-detail or add-person modal is open), so it must sit
   above every other .modal rather than sharing the same stacking layer. */
#access-modal { z-index: 100; }
.modal-box {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 20px;
  width: 100%;
  max-width: 360px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.modal-box h3 { margin: 0; }
.modal-box label { display: flex; flex-direction: column; gap: 4px; font-size: 0.85rem; }
.modal-box input, .modal-box select {
  padding: 8px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
}
.modal-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 4px; }
.error { color: var(--danger); }

.toast {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--text);
  color: var(--bg);
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 0.85rem;
  z-index: 60;
}