:root {
  --bg: #f5f5f7;
  --card: #ffffff;
  --text: #1d1d1f;
  --muted: #6e6e73;
  --accent: #0a84ff;
  --border: #e2e2e6;
  --danger: #ff3b30;
  --ok: #34c759;
  --warn: #ff9f0a;
  --blocked: #8e8e93;
  --shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1c1c1e;
    --card: #2c2c2e;
    --text: #f5f5f7;
    --muted: #98989d;
    --border: #3a3a3c;
    --shadow: 0 2px 12px rgba(0, 0, 0, 0.4);
  }
}

* { box-sizing: border-box; }
/* The hidden attribute must always win, even over display:flex rules below. */
[hidden] { display: none !important; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  background: var(--bg);
  color: var(--text);
}

.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 20px;
  background: var(--card);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 20;
}
.brand { font-size: 18px; font-weight: 700; }
.topbar-right { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.muted { color: var(--muted); font-size: 14px; }

.pill {
  border: none; border-radius: 999px; padding: 8px 16px;
  font-size: 14px; font-weight: 600; cursor: pointer;
  background: var(--accent); color: #fff;
  text-decoration: none; display: inline-block;
}
.pill.secondary { background: transparent; color: var(--accent); border: 1px solid var(--accent); }
.pill.danger { background: var(--danger); }
.pill.ok { background: var(--ok); }
.pill.warn { background: var(--warn); }
.pill.small { padding: 5px 12px; font-size: 13px; }
.pill:disabled { opacity: 0.5; cursor: default; }

.role-chip {
  font-size: 12px; font-weight: 700; padding: 3px 10px; border-radius: 999px;
  background: color-mix(in srgb, var(--accent) 15%, transparent); color: var(--accent);
}
.role-chip.closeFriend { background: color-mix(in srgb, var(--warn) 18%, transparent); color: var(--warn); }

.banner {
  margin: 12px 20px 0; padding: 10px 16px; border-radius: 12px;
  font-size: 14px; font-weight: 500;
  background: color-mix(in srgb, var(--accent) 12%, var(--card)); color: var(--text);
}
.banner.err { background: color-mix(in srgb, var(--danger) 14%, var(--card)); }
.banner.ok { background: color-mix(in srgb, var(--ok) 14%, var(--card)); }

main { max-width: 1100px; margin: 0 auto; padding: 20px; }

#calendar {
  background: var(--card); border-radius: 16px; box-shadow: var(--shadow);
  padding: 16px;
}

/* FullCalendar theme adjustments */
.fc { --fc-border-color: var(--border); --fc-page-bg-color: var(--card); font-size: 14px; }
.fc .fc-toolbar-title { font-size: 20px; font-weight: 700; }
.fc .fc-button {
  background: var(--accent); border: none; border-radius: 8px; font-weight: 600;
  text-transform: capitalize;
}
.fc .fc-button:disabled { background: var(--muted); }
.fc .fc-daygrid-day.fc-day-today { background: color-mix(in srgb, var(--accent) 8%, transparent); }
.fc-event { cursor: pointer; border-radius: 6px; }
.fc-event.ev-pending { opacity: 0.65; border-style: dashed !important; }
.fc-event.ev-blocked { background: var(--blocked) !important; border-color: var(--blocked) !important; }
.fc-event.ev-hidden-admin { outline: 2px dashed var(--blocked); }

/* Admin panel */
.panel {
  background: var(--card); border-radius: 16px; box-shadow: var(--shadow);
  margin-bottom: 20px; overflow: hidden;
}
.panel-tabs { display: flex; border-bottom: 1px solid var(--border); }
.tab {
  flex: 0 0 auto; padding: 12px 18px; border: none; background: none;
  font-size: 14px; font-weight: 600; color: var(--muted); cursor: pointer;
}
.tab.active { color: var(--accent); box-shadow: inset 0 -2px 0 var(--accent); }
.tab-body { padding: 16px; }
.badge {
  background: var(--danger); color: #fff; border-radius: 999px;
  font-size: 11px; padding: 1px 7px; margin-left: 4px;
}

.list-row {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 10px 0; border-bottom: 1px solid var(--border); flex-wrap: wrap;
}
.list-row:last-child { border-bottom: none; }
.list-main { min-width: 0; }
.list-title { font-weight: 600; }
.list-sub { font-size: 13px; color: var(--muted); }
.list-actions { display: flex; gap: 8px; flex-wrap: wrap; }

select.role-select {
  padding: 6px 10px; border-radius: 8px; border: 1px solid var(--border);
  background: var(--bg); color: var(--text); font-size: 14px;
}

/* Modal */
.modal-backdrop {
  position: fixed; inset: 0; background: rgba(0, 0, 0, 0.45);
  display: flex; align-items: center; justify-content: center; z-index: 50;
  padding: 16px;
}
.modal {
  background: var(--card); border-radius: 16px; box-shadow: var(--shadow);
  width: 100%; max-width: 520px; max-height: 90vh; overflow-y: auto;
}
.modal-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 20px 0;
}
.modal-head h2 { margin: 0; font-size: 18px; }
.icon-btn {
  border: none; background: var(--bg); color: var(--muted);
  border-radius: 999px; width: 30px; height: 30px; cursor: pointer; font-size: 14px;
}
.modal-body { padding: 16px 20px; }
.modal-foot {
  padding: 0 20px 20px; display: flex; gap: 10px; justify-content: flex-end; flex-wrap: wrap;
}

.field { margin-bottom: 12px; }
.field label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 4px; color: var(--muted); }
.field input, .field textarea {
  width: 100%; padding: 9px 12px; border-radius: 10px;
  border: 1px solid var(--border); background: var(--bg); color: var(--text);
  font-size: 15px; font-family: inherit;
}
.field textarea { resize: vertical; min-height: 70px; }
.field-row { display: flex; gap: 12px; }
.field-row .field { flex: 1; }
.checkbox-field { display: flex; align-items: center; gap: 8px; font-size: 14px; margin-bottom: 12px; }
.checkbox-field input { width: auto; }

.detail-row { margin-bottom: 10px; font-size: 15px; }
.detail-label { font-size: 12px; font-weight: 700; text-transform: uppercase; color: var(--muted); }

.status-chip {
  display: inline-block; font-size: 12px; font-weight: 700; padding: 3px 10px; border-radius: 999px;
}
.status-chip.pending { background: color-mix(in srgb, var(--warn) 18%, transparent); color: var(--warn); }
.status-chip.approved { background: color-mix(in srgb, var(--ok) 18%, transparent); color: var(--ok); }
.status-chip.rejected { background: color-mix(in srgb, var(--danger) 18%, transparent); color: var(--danger); }

/* Category legend / filter chips */
.legend { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 14px; }
.legend-chip {
  display: inline-flex; align-items: center; gap: 6px;
  border: 1px solid var(--border); border-radius: 999px;
  padding: 5px 12px; font-size: 13px; font-weight: 600;
  background: var(--card); color: var(--text); cursor: pointer;
}
.legend-chip .dot { width: 10px; height: 10px; border-radius: 50%; }
.legend-chip.off { opacity: 0.35; }

/* Category admin rows */
.cat-row { display: flex; align-items: center; gap: 10px; padding: 8px 0; border-bottom: 1px solid var(--border); flex-wrap: wrap; }
.cat-row:last-child { border-bottom: none; }
.cat-row input[type="text"] {
  padding: 7px 10px; border-radius: 8px; border: 1px solid var(--border);
  background: var(--bg); color: var(--text); font-size: 14px;
}
.cat-row input[type="color"] { width: 36px; height: 30px; border: none; background: none; padding: 0; cursor: pointer; }

@media (max-width: 640px) {
  main { padding: 10px; }
  .fc .fc-toolbar { flex-direction: column; gap: 8px; }
}