:root {
  --bg: #f5f1e8;
  --panel: #fffdf8;
  --ink: #1f1c19;
  --accent: #b3541e;
  --accent-2: #205375;
  --line: #dfd7c7;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 15% 10%, #fff7dd 0%, transparent 45%),
    radial-gradient(circle at 85% 0%, #ffd9b0 0%, transparent 35%),
    var(--bg);
  color: var(--ink);
}

.topbar {
  padding: 1rem;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(90deg, #fffef9, #f7f0df);
}

.topbar h1 {
  margin: 0;
  font-size: 1.35rem;
}

.topbar p {
  margin: 0.35rem 0 0;
}

main {
  display: grid;
  gap: 1rem;
  grid-template-columns: 340px 1fr;
  padding: 1rem;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1rem;
}

.status {
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.marker-link {
  display: inline-block;
  color: var(--accent-2);
  margin-bottom: 0.75rem;
}

.selected-title {
  margin-bottom: 0.75rem;
  font-size: 0.95rem;
}

.panel-close {
  display: none;
}

.thumb-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.6rem;
}

.thumb-btn {
  border: 1px solid var(--line);
  background: #ffffff;
  border-radius: 10px;
  cursor: pointer;
  padding: 0.35rem;
  text-align: left;
  transition: transform 140ms ease, border-color 140ms ease;
}

.thumb-btn:hover {
  transform: translateY(-1px);
  border-color: var(--accent);
}

.thumb-btn.active {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent), white 75%);
}

.thumb-btn img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 6px;
  display: block;
}

.thumb-label {
  font-size: 0.8rem;
  margin-top: 0.35rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.scene-wrap {
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  min-height: 62vh;
  background: #f3efe5;
  position: relative;
}

.scene-overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 5;
}

.scene-status {
  pointer-events: auto;
  margin: 0.75rem;
  padding: 0.5rem 0.65rem;
  font-size: 0.82rem;
  border-radius: 10px;
  background: color-mix(in srgb, #fff7df, transparent 14%);
  border: 1px solid color-mix(in srgb, var(--line), #ffffff 20%);
  max-width: 420px;
}

.panel-open {
  pointer-events: auto;
  position: absolute;
  right: 0.75rem;
  bottom: 0.75rem;
  border: 0;
  border-radius: 999px;
  background: #1f1c19;
  color: #fff;
  font-weight: 700;
  padding: 0.55rem 1rem;
  cursor: pointer;
}

.scene-wrap .a-canvas {
  width: 100% !important;
  height: 62vh !important;
}

@media (max-width: 900px) {
  body {
    background: #000;
  }

  main {
    grid-template-columns: 1fr;
    gap: 0;
    padding: 0;
    min-height: calc(100vh - 72px);
  }

  .scene-wrap {
    min-height: calc(100vh - 72px);
    border: 0;
    border-radius: 0;
  }

  .scene-wrap .a-canvas {
    height: calc(100vh - 72px) !important;
  }

  .panel {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    max-height: 62vh;
    overflow: auto;
    border-radius: 16px 16px 0 0;
    z-index: 12;
    transform: translateY(110%);
    transition: transform 170ms ease;
  }

  .panel.open {
    transform: translateY(0);
  }

  .panel-close {
    display: inline-block;
    float: right;
    border: 1px solid var(--line);
    background: #fff;
    border-radius: 999px;
    padding: 0.3rem 0.7rem;
    margin-bottom: 0.35rem;
    cursor: pointer;
  }

  .thumb-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .topbar {
    position: sticky;
    top: 0;
    z-index: 14;
    background: linear-gradient(90deg, #fffef9, #f7f0df);
  }
}