:root {
  --bg: #0d0d0d;
  --bg-elevated: #1a1a1a;
  --bg-card: #161616;
  --border: #2c2c2c;
  --red: #e31e28;
  --red-dim: #8a1017;
  --amber: #d4a017;
  --heading: #ffffff;
  --text: #f2f2f2;
  --text-dim: #9a9a9a;
  --gray: #3a3a3a;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, "Segoe UI", "PingFang TC", "Microsoft JhengHei", sans-serif;
  line-height: 1.5;
  -webkit-tap-highlight-color: transparent;
}

h2 { font-size: 1.25rem; margin: 0 0 1rem; color: var(--heading); }
h3 { font-size: 1.05rem; margin: 2rem 0 0.75rem; color: var(--heading); }

/* Headings and other emphasis text stay pure white for max contrast on the
   near-black background; secondary/supporting text stays gray (--text-dim). */
.outlet-card .name,
.room-card .rname,
.room-heatmap .room-label,
.topbar-brand {
  color: var(--heading);
}

/* ---------- Topbar ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.topbar-brand {
  font-weight: 800;
  letter-spacing: 0.05em;
  font-size: 1.1rem;
}
.topbar-brand span { color: var(--red); }

.tabs { display: flex; gap: 0.5rem; }

.tab-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-dim);
  padding: 0.5rem 1rem;
  border-radius: 999px;
  font-size: 0.85rem;
  cursor: pointer;
}
.tab-btn.active {
  background: var(--red);
  border-color: var(--red);
  color: #fff;
  font-weight: 600;
}

main {
  max-width: 640px;
  margin: 0 auto;
  padding: 1.25rem 1rem 3rem;
}

.view { display: none; }
.view.active { display: block; }

/* ---------- Step indicator ---------- */
.step-indicator {
  display: flex;
  gap: 0.35rem;
  margin-bottom: 1.5rem;
}
.step-indicator .dot {
  flex: 1;
  height: 4px;
  border-radius: 2px;
  background: var(--gray);
}
.step-indicator .dot.done,
.step-indicator .dot.current {
  background: var(--red);
}

.step-panel { animation: fadein 0.15s ease-out; }
@keyframes fadein { from { opacity: 0; } to { opacity: 1; } }

.back-btn {
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 0.85rem;
  padding: 0 0 0.75rem;
  cursor: pointer;
}
.back-btn:hover { color: var(--text); }

/* ---------- Outlet grid (Step 1) ---------- */
.outlet-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
}
@media (min-width: 560px) {
  .outlet-grid { grid-template-columns: 1fr 1fr; }
}

.outlet-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem;
  cursor: pointer;
  text-align: left;
}
.outlet-card:hover, .outlet-card:focus {
  border-color: var(--red);
}
.outlet-card .name { font-weight: 700; margin-bottom: 0.25rem; }
.outlet-card .addr { font-size: 0.8rem; color: var(--text-dim); margin-bottom: 0.35rem; }
.outlet-card .hours { font-size: 0.75rem; color: var(--red); }

/* ---------- Fields ---------- */
.field-group { margin-bottom: 1.1rem; }
.field-group label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-bottom: 0.4rem;
}
.field-group input[type=text],
.field-group input[type=tel],
.field-group input[type=email],
.field-group input[type=number],
.field-group input[type=date],
.field-group select,
.field-group textarea {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.65rem 0.75rem;
  border-radius: 8px;
  font-size: 1rem;
}
.field-group textarea { resize: vertical; }
.field-hint { color: var(--text-dim); font-size: 0.78rem; margin: 0.4rem 0 0; }
.checkbox-group label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text);
  font-size: 0.85rem;
}

.pill-group { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.pill {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.5rem 1rem;
  border-radius: 999px;
  cursor: pointer;
  font-size: 0.9rem;
}
.pill.selected {
  background: var(--red);
  border-color: var(--red);
  font-weight: 600;
}

.selected-outlet-note { color: var(--text-dim); font-size: 0.85rem; margin: -0.5rem 0 1rem; }

.primary-btn {
  width: 100%;
  background: var(--red);
  color: #fff;
  border: none;
  padding: 0.85rem;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  margin-top: 0.5rem;
}
.primary-btn:disabled {
  background: var(--gray);
  color: var(--text-dim);
  cursor: not-allowed;
}

.avail-readout {
  margin: 0.25rem 0 1rem;
  padding: 0.75rem 1rem;
  border-radius: 8px;
  font-weight: 700;
  font-size: 0.95rem;
}
.avail-readout.available { background: rgba(255,255,255,0.06); border: 1px solid #f5f5f5; color: #ffffff; }
.avail-readout.full { background: var(--red-dim); border: 1px solid var(--red); color: #ffffff; }

/* ---------- Room grid (Step 3) ---------- */
.room-grid { display: grid; grid-template-columns: 1fr; gap: 0.75rem; }
@media (min-width: 560px) {
  .room-grid { grid-template-columns: 1fr 1fr; }
}

.room-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem;
  cursor: pointer;
  overflow: hidden;
}
.room-card::before {
  content: "";
  position: absolute; inset: 0 0 auto 0;
  height: 4px;
  background: var(--room-color, var(--red));
}
.room-card .rname { font-weight: 700; margin-bottom: 0.25rem; }
.room-card .rprice { color: var(--text-dim); font-size: 0.85rem; margin-bottom: 0.6rem; }
.room-card .ravail {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
}
.room-card.available { background: #ffffff; border-color: var(--red); }
.room-card.available .rname { color: #1a1a1a; }
.room-card.available .rprice { color: #555555; }
.room-card.available .ravail { background: rgba(227,30,40,0.12); color: var(--red); border: 1px solid var(--red); }
.room-card.selected { background: var(--red-dim); border-color: var(--red); }
.room-card.selected .rname { color: var(--heading); }
.room-card.selected .rprice { color: var(--text-dim); }

.room-card.full { opacity: 0.5; cursor: not-allowed; }
.room-card.full .ravail { background: var(--gray); color: var(--text-dim); }

/* ---------- Summary ---------- */
.summary-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem;
  margin-bottom: 1rem;
}
.summary-card .row {
  display: flex;
  justify-content: space-between;
  padding: 0.4rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}
.summary-card .row:last-child { border-bottom: none; }
.summary-card .row span:first-child { color: var(--text-dim); }

.success-box {
  text-align: center;
  padding: 3rem 1rem;
}
.success-icon {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: var(--red);
  color: #fff;
  font-size: 1.5rem;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 1.25rem;
}

/* ---------- Admin ---------- */
/* The booking flow stays narrow (mobile-first single column); the admin
   view is data-dense and should use the full viewport width instead of
   sitting in a centered 640px column. */
body.admin-mode main {
  max-width: none;
  padding-left: 50px;
  padding-right: 50px;
}
.admin-header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 1.5rem;
}
.admin-header select {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
  font-size: 0.95rem;
}

.stat-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
}
@media (min-width: 720px) {
  .stat-cards { grid-template-columns: repeat(3, 1fr); }
}
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.1rem;
}
.stat-card .label { font-size: 0.8rem; color: var(--text-dim); margin-bottom: 0.4rem; }
.stat-card .value { font-size: 1.8rem; font-weight: 800; color: var(--red); }

.table-wrap { overflow-x: auto; }
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
  min-width: 480px;
}
th, td {
  text-align: left;
  padding: 0.6rem 0.75rem;
  border-bottom: 1px solid var(--border);
}
th { color: var(--text-dim); font-weight: 600; font-size: 0.8rem; }

.status-badge {
  font-size: 0.75rem;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  font-weight: 600;
}
.status-badge.confirmed { background: rgba(227,30,40,0.15); color: var(--red); border: 1px solid var(--red); }
.status-badge.pending { background: rgba(255,255,255,0.08); color: var(--text-dim); border: 1px solid var(--border); }
.status-badge.cancelled { background: rgba(255,255,255,0.04); color: #5a5a5a; border: 1px solid var(--border); text-decoration: line-through; }

.bookings-table select {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.3rem 0.5rem;
  border-radius: 6px;
  font-size: 0.82rem;
}

.outlet-view-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.outlet-view-title-row h3 { margin: 0; }

.secondary-btn {
  background: transparent;
  border: 1px solid var(--red);
  color: var(--red);
  padding: 0.55rem 1rem;
  border-radius: 8px;
  font-weight: 700;
  font-size: 0.85rem;
  cursor: pointer;
  white-space: nowrap;
}
.secondary-btn:hover { background: rgba(227,30,40,0.12); }

.heatmap td, .heatmap th { text-align: center; min-width: 64px; }
.heatmap .row-label { text-align: left; color: var(--text-dim); font-size: 0.8rem; min-width: 110px; }
.heatmap .cell {
  font-size: 0.75rem;
  color: #fff;
  font-weight: 600;
}

/* ---------- Branch room-availability heatmap ---------- */
.date-nav {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}
.date-nav button {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text);
  width: 36px; height: 36px;
  border-radius: 8px;
  font-size: 1rem;
  cursor: pointer;
}
.date-nav button:disabled { opacity: 0.3; cursor: not-allowed; }
.date-nav button:not(:disabled):hover { border-color: var(--red); }
#dateNavLabel { font-weight: 700; font-size: 1rem; }

.room-heatmap { min-width: 1080px; border-spacing: 3px; border-collapse: separate; }
.room-heatmap th, .room-heatmap td { text-align: center; padding: 0; }
.room-heatmap th { color: var(--text-dim); font-size: 0.72rem; font-weight: 600; padding-bottom: 0.4rem; }
.room-heatmap .room-label {
  text-align: left;
  color: var(--text);
  font-weight: 600;
  min-width: 120px;
  padding-right: 0.6rem;
}
.room-heatmap .room-label .rp { display: block; font-size: 0.72rem; color: var(--text-dim); font-weight: 400; }

.avail-cell {
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.45rem 0.2rem;
  font-size: 0.75rem;
  font-weight: 700;
  cursor: pointer;
  width: 60px;
  color: var(--text);
}
/* Three hues, not three shades of the same red — has to read at a glance
   on a near-black background. */
.avail-cell.plenty { background: rgba(255,255,255,0.04); border: 1px solid #f5f5f5; color: #ffffff; font-weight: 800; }
.avail-cell.low { background: rgba(212,160,23,0.3); border: 2px solid var(--amber); color: #ffffff; }
.avail-cell.full { background: var(--red-dim); border-color: var(--red); color: #ffffff; }
.avail-cell:hover { outline: 2px solid var(--red); }

.heatmap-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  margin-top: 1rem;
  font-size: 0.8rem;
  color: var(--text-dim);
}
.heatmap-legend span { display: flex; align-items: center; gap: 0.4rem; }
.swatch { width: 12px; height: 12px; border-radius: 3px; display: inline-block; }
.swatch.plenty { background: rgba(255,255,255,0.04); border: 1px solid #f5f5f5; }
.swatch.low { background: rgba(212,160,23,0.3); border: 2px solid var(--amber); }
.swatch.full { background: var(--red-dim); border: 1px solid var(--red); }

/* ---------- Modal ---------- */
.modal-backdrop {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.65);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 3rem 1rem;
  overflow-y: auto;
  z-index: 50;
}
.modal-backdrop[hidden] { display: none; }
.modal-box {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  width: 100%;
  max-width: 520px;
  position: relative;
}
.modal-close {
  position: absolute;
  top: 0.75rem; right: 0.75rem;
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 1.5rem;
  cursor: pointer;
  line-height: 1;
}
.modal-close:hover { color: var(--text); }
.modal-empty { color: var(--text-dim); font-size: 0.9rem; }

/* ============ Mobile ============ */
@media (max-width: 640px) {
  /* Wide tables (heatmaps) scroll within their own .table-wrap; the page
     itself should never pick up a second horizontal scrollbar on a phone.
     Scoped to mobile only — desktop keeps its default overflow behavior. */
  html, body { overflow-x: hidden; }

  /* Scrolling still works everywhere on mobile — this only hides the
     visible scrollbar track (the white bar), scoped to mobile so desktop's
     scrollbars are untouched. */
  * {
    scrollbar-width: none; /* Firefox */
    -ms-overflow-style: none; /* old Edge/IE */
  }
  *::-webkit-scrollbar { width: 0; height: 0; display: none; }

  .topbar { padding: 0.6rem 0.85rem; }
  .topbar-brand { font-size: 1rem; }
  .tabs { gap: 0.4rem; }
  .tab-btn { padding: 0.45rem 0.8rem; font-size: 0.78rem; }

  main { padding: 1rem 0.9rem 2.5rem; }
  /* The admin view still gets edge-to-edge width on a phone, just with
     padding sized for a small screen instead of the desktop 50px. */
  body.admin-mode main { padding-left: 0.9rem; padding-right: 0.9rem; }

  h2 { font-size: 1.1rem; }
  h3 { font-size: 1rem; margin: 1.5rem 0 0.6rem; }

  .step-indicator { gap: 0.25rem; margin-bottom: 1.25rem; }
  .back-btn { font-size: 0.8rem; padding: 0.35rem 0 0.65rem; }

  .outlet-card, .room-card { padding: 0.85rem; }
  .outlet-card .name, .room-card .rname { font-size: 0.95rem; }

  .field-group input[type=text],
  .field-group input[type=tel],
  .field-group input[type=email],
  .field-group input[type=number],
  .field-group input[type=date],
  .field-group select,
  .field-group textarea {
    padding: 0.6rem 0.7rem;
  }
  .pill { padding: 0.45rem 0.9rem; font-size: 0.85rem; }
  .primary-btn { padding: 0.75rem; font-size: 0.95rem; }

  .admin-header { flex-wrap: wrap; row-gap: 0.5rem; }
  .admin-header select { flex: 1; min-width: 160px; }

  .stat-card { padding: 0.9rem; }
  .stat-card .value { font-size: 1.5rem; }

  table { font-size: 0.82rem; }
  th, td { padding: 0.5rem 0.6rem; }

  .outlet-view-title-row { flex-direction: column; align-items: stretch; gap: 0.6rem; }
  .secondary-btn { width: 100%; padding: 0.65rem 1rem; }

  .date-nav { justify-content: space-between; }
  .date-nav button { width: 40px; height: 40px; }

  .avail-cell { min-height: 42px; font-size: 0.72rem; }

  .modal-backdrop { padding: 1.25rem 0.6rem; }
  .modal-box { padding: 1.1rem; border-radius: 10px; }
  .modal-close { top: 0.6rem; right: 0.6rem; font-size: 1.35rem; padding: 0.3rem; }
}

@media (max-width: 380px) {
  .tabs { gap: 0.3rem; }
  .tab-btn { font-size: 0.7rem; padding: 0.4rem 0.6rem; }
  .heatmap-legend { gap: 0.75rem; font-size: 0.75rem; }
}