:root {
  --bg: #ffffff;
  --panel-bg: #ffffff;
  --border: #e8e8e8;
  --text: #1f1f1f;
  --muted: #6d6d6d;
  --row-hover: #f7f7f7;
  --radius: 16px;
}

* { box-sizing: border-box; }

html,
body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  min-height: 100dvh;
}

body {
  font-family: Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  overflow: hidden;
}

.app {
  display: grid;
  grid-template-columns: 1fr 390px;
  width: 100%;
  height: 100vh;
  height: 100dvh;
  min-height: 100dvh;
}

.viewer-area {
  position: relative;
  min-width: 0;
  min-height: 0;
  background: #ffffff;
}

#viewerCanvasWrapper,
#viewerCanvasWrapper canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  outline: none;
}

.availability-toggle {
  position: absolute;
  left: 16px;
  bottom: 16px;
  z-index: 5;
  border: 1px solid rgba(0,0,0,0.12);
  background: rgba(255,255,255,0.94);
  color: #1f1f1f;
  padding: 11px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 8px 20px rgba(0,0,0,0.08);
  backdrop-filter: blur(8px);
}

.availability-toggle.is-active {
  background: #1f9d55;
  color: #fff;
  border-color: #1f9d55;
}

.panel {
  height: 100%;
  min-height: 0;
  background: var(--panel-bg);
  border-left: 1px solid var(--border);
  padding: 18px;
  overflow: auto;
  -webkit-overflow-scrolling: touch;
}

.panel-header {
  margin-bottom: 16px;
}

.panel-title {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.02em;
  text-align: center;
}

.panel-section {
  margin-bottom: 18px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 6px 18px rgba(0,0,0,0.03);
  overflow: hidden;
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  user-select: none;
}

.section-arrow {
  color: var(--muted);
  transition: transform 0.2s ease;
}

.section-collapsible.is-open .section-arrow {
  transform: rotate(180deg);
}

.section-body {
  display: none;
  padding: 0 14px 14px;
}

.section-collapsible.is-open .section-body {
  display: block;
}

.info-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}

.info-table thead th {
  text-align: left;
  padding: 10px 8px;
  border-bottom: 1px solid var(--border);
  color: var(--muted);
  font-weight: 700;
  white-space: nowrap;
}

.info-table tbody tr {
  cursor: pointer;
  transition: background 0.15s ease;
}

.info-table tbody tr:hover {
  background: var(--row-hover);
}

.info-table tbody tr.is-active {
  background: rgba(0,0,0,0.05);
}

.info-table tbody tr.is-hover {
  background: rgba(0,0,0,0.03);
}

.info-table tbody td {
  padding: 11px 8px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

.info-table tbody tr:last-child td {
  border-bottom: none;
}

.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 24px;
  padding: 4px 10px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 11px;
  border: 1px solid transparent;
  white-space: nowrap;
}

.badge.free {
  background: rgba(18, 196, 104, 0.12);
  color: #0d8b4a;
  border-color: rgba(18, 196, 104, 0.2);
}

.badge.reserved {
  background: rgba(255, 196, 0, 0.18);
  color: #9a7500;
  border-color: rgba(255, 196, 0, 0.28);
}

.badge.sold {
  background: rgba(255, 87, 87, 0.14);
  color: #c13a3a;
  border-color: rgba(255, 87, 87, 0.22);
}

.details-card {
  display: block;
}

.details-card.is-hidden {
  display: none;
}

.details-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.details-title {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.1;
}

.details-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.detail-item {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 12px;
  background: #fcfcfc;
}

.detail-label {
  font-size: 11px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 6px;
}

.detail-value {
  font-size: 14px;
  font-weight: 700;
}

.plan-wrap {
  margin-top: 12px;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px;
  background: #fcfcfc;
}

.details-plan {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 10px;
  margin-top: 8px;
  border: 1px solid var(--border);
  background: #fff;
}

.details-plan.is-hidden {
  display: none;
}

.plan-empty {
  margin-top: 8px;
  font-size: 12px;
  color: var(--muted);
}

.loader {
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.92);
  display: none;
  z-index: 10;
}

.loader-spinner {
  position: absolute;
  left: 50%;
  top: 50%;
  margin-left: -30px;
  margin-top: -30px;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  border: 8px solid #f1f1f1;
  border-top: 8px solid #9c9c9c;
  animation: spin 1.1s linear infinite;
}

.loader-text {
  position: absolute;
  left: 50%;
  top: calc(50% + 50px);
  transform: translateX(-50%);
  font-size: 12px;
  color: var(--muted);
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@media (max-width: 1080px) {
  .app {
    grid-template-columns: 1fr;
    grid-template-rows: minmax(0, 1fr) minmax(0, 42dvh);
    height: 100vh;
    height: 100dvh;
    min-height: 100dvh;
  }

  .viewer-area {
    min-height: 0;
  }

  .panel {
    height: 100%;
    min-height: 0;
    border-left: none;
    border-top: 1px solid var(--border);
    padding-bottom: calc(18px + env(safe-area-inset-bottom, 0px));
  }

  .availability-toggle {
    left: 12px;
    bottom: 12px;
    font-size: 12px;
    padding: 10px 12px;
  }

  .details-grid {
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }

  .detail-item {
    padding: 9px 10px;
  }
}