:root {
  --bg-deep: #0f1419;
  --bg-card: #1a2332;
  --bg-card-hover: #222d3f;
  --border: rgba(255, 255, 255, 0.08);
  --text: #e8edf4;
  --text-muted: #8b9cb3;
  --vacant: #22c55e;
  --vacant-bg: rgba(34, 197, 94, 0.12);
  --occupied: #f59e0b;
  --occupied-bg: rgba(245, 158, 11, 0.14);
  --checkout: #a78bfa;
  --checkout-bg: rgba(167, 139, 250, 0.14);
  --booked: #38bdf8;
  --booked-bg: rgba(56, 189, 248, 0.14);
  --accent: #c9a227;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  --radius: 14px;
  --radius-sm: 10px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'DM Sans', system-ui, sans-serif;
  background: var(--bg-deep);
  background-image:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(91, 141, 239, 0.15), transparent),
    radial-gradient(ellipse 60% 40% at 100% 100%, rgba(201, 162, 39, 0.08), transparent);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
}

.app {
  max-width: 1400px;
  margin: 0 auto;
  padding: 24px 28px 48px;
}

/* Header */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  margin-bottom: 28px;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 16px;
}

.logo {
  width: 52px;
  height: 52px;
  background: linear-gradient(135deg, var(--accent), #e8c547);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Playfair Display', serif;
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--bg-deep);
  box-shadow: 0 4px 20px rgba(201, 162, 39, 0.35);
}

.header h1 {
  font-family: 'Playfair Display', serif;
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.subtitle {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 2px;
}

.header-meta {
  display: flex;
  align-items: center;
  gap: 20px;
}

.date-badge {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  color: var(--text-muted);
}

.date-badge strong {
  color: var(--text);
  display: block;
  font-size: 1rem;
}

.occupancy-ring {
  position: relative;
  width: 64px;
  height: 64px;
}

.occupancy-ring svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.ring-bg {
  fill: none;
  stroke: var(--bg-card);
  stroke-width: 3;
}

.ring-fill {
  fill: none;
  stroke: var(--accent);
  stroke-width: 3;
  stroke-linecap: round;
  transition: stroke-dasharray 0.6s ease;
}

.ring-label {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent);
}

/* Stats bar */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 22px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  transition: transform 0.2s, box-shadow 0.2s;
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.stat-value {
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.1;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.stat-total .stat-value { color: var(--text); }
.stat-occupied .stat-value { color: var(--occupied); }
.stat-vacant .stat-value { color: var(--vacant); }
.stat-checkout .stat-value { color: var(--checkout); }

/* Legend */
.legend {
  display: flex;
  gap: 24px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
}

.dot.vacant { background: var(--vacant); box-shadow: 0 0 8px var(--vacant); }
.dot.booked { background: var(--booked); box-shadow: 0 0 8px var(--booked); }
.dot.occupied { background: var(--occupied); box-shadow: 0 0 8px var(--occupied); }
.dot.checkout { background: var(--checkout); box-shadow: 0 0 8px var(--checkout); }

/* Room type sections */
.room-types {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.type-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.type-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(90deg, rgba(255,255,255,0.03), transparent);
}

.type-title-group {
  display: flex;
  align-items: center;
  gap: 14px;
}

.type-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.type-title {
  font-family: 'Playfair Display', serif;
  font-size: 1.35rem;
  font-weight: 600;
}

.type-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 2px;
}

.type-rate {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.type-rate strong {
  color: var(--accent);
  font-size: 1.1rem;
}

.type-stats {
  display: flex;
  gap: 12px;
}

.type-stat {
  text-align: center;
  padding: 8px 16px;
  background: rgba(0,0,0,0.2);
  border-radius: var(--radius-sm);
  min-width: 72px;
}

.type-stat .num {
  display: block;
  font-size: 1.25rem;
  font-weight: 700;
}

.type-stat .lbl {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.type-stat.occupied .num { color: var(--occupied); }
.type-stat.vacant .num { color: var(--vacant); }

/* Room grid */
.room-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(148px, 1fr));
  gap: 14px;
  padding: 22px 24px 24px;
}

.room-tile {
  position: relative;
  border-radius: var(--radius-sm);
  padding: 16px 14px;
  cursor: pointer;
  border: 2px solid transparent;
  transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
  min-height: 118px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.room-tile:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.35);
}

.room-tile.vacant {
  background: var(--vacant-bg);
  border-color: rgba(34, 197, 94, 0.35);
}

.room-tile.booked {
  background: var(--booked-bg);
  border-color: rgba(56, 189, 248, 0.45);
}

.room-tile.occupied {
  background: var(--occupied-bg);
  border-color: rgba(245, 158, 11, 0.4);
}

.room-tile.checkout {
  background: var(--checkout-bg);
  border-color: rgba(167, 139, 250, 0.45);
}

.room-number {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.room-floor {
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.room-status-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-top: 8px;
  padding: 3px 8px;
  border-radius: 6px;
  width: fit-content;
}

.room-tile.vacant .room-status-badge {
  background: rgba(34, 197, 94, 0.2);
  color: var(--vacant);
}

.room-tile.booked .room-status-badge {
  background: rgba(56, 189, 248, 0.2);
  color: var(--booked);
}

.room-tile.occupied .room-status-badge {
  background: rgba(245, 158, 11, 0.2);
  color: var(--occupied);
}

.room-tile.checkout .room-status-badge {
  background: rgba(167, 139, 250, 0.2);
  color: var(--checkout);
}

.room-guest {
  font-size: 0.82rem;
  color: var(--text);
  margin-top: 6px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-weight: 500;
}

.room-pax {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 2px;
}

.room-tile.vacant .room-guest,
.room-tile.vacant .room-pax {
  color: var(--text-muted);
  font-style: italic;
  font-weight: 400;
}

/* Modal */
.room-modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.room-modal.hidden {
  display: none;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(4px);
}

.modal-content {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 32px;
  max-width: 440px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow);
}

.modal-close {
  position: absolute;
  top: 14px;
  right: 16px;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  line-height: 1;
}

.modal-close:hover {
  color: var(--text);
}

.modal-room-num {
  font-family: 'Playfair Display', serif;
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.modal-type {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 20px;
}

.modal-detail {
  display: flex;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}

.modal-detail:last-child {
  border-bottom: none;
}

.modal-detail span:first-child {
  color: var(--text-muted);
}

.modal-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.btn {
  border: none;
  border-radius: 10px;
  padding: 11px 16px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: transform 0.15s, opacity 0.15s;
}

.btn:hover { transform: translateY(-1px); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

.btn-primary { background: var(--accent); color: #0f1419; }
.btn-success { background: var(--vacant); color: #0f1419; }
.btn-warning { background: var(--occupied); color: #0f1419; }
.btn-info { background: var(--booked); color: #0f1419; }
.btn-danger { background: #ef4444; color: #fff; }
.btn-ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
}

.stay-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 16px;
}

.form-row label {
  display: block;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 5px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-row input,
.form-row select {
  width: 100%;
  background: rgba(0,0,0,0.25);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  padding: 10px 12px;
  font-size: 0.92rem;
  font-family: inherit;
}

.form-row input:focus,
.form-row select:focus {
  outline: none;
  border-color: var(--accent);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.modal-tabs {
  display: flex;
  gap: 8px;
  margin-top: 16px;
}

.tab-btn {
  flex: 1;
  padding: 9px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  font-weight: 600;
  font-family: inherit;
}

.tab-btn.active {
  background: rgba(201, 162, 39, 0.15);
  border-color: var(--accent);
  color: var(--accent);
}

.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 200;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 4px solid var(--vacant);
  padding: 14px 18px;
  border-radius: 10px;
  box-shadow: var(--shadow);
  max-width: 360px;
  font-size: 0.9rem;
}

.toast.error { border-left-color: #ef4444; }
.toast.hidden { display: none; }

/* Responsive */
@media (max-width: 900px) {
  .stats-bar {
    grid-template-columns: repeat(2, 1fr);
  }

  .room-grid {
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  }
}

@media (max-width: 520px) {
  .app {
    padding: 16px;
  }

  .stats-bar {
    grid-template-columns: 1fr 1fr;
  }

  .type-header {
    flex-direction: column;
    align-items: flex-start;
  }
}