/* public/css/viewer.css — 3D Room Customizer styles */
:root {
  --c-primary:   #1C2B4A;
  --c-accent:    #C9922A;
  --c-bg:        #F5F3EF;
  --c-surface:   #FFFFFF;
  --c-text:      #1A1A1A;
  --c-muted:     #6B7280;
  --c-border:    #E5E1DA;
  --r:           8px;
  --r-lg:        16px;
  --panel-w:     320px;
  --toolbar-h:   60px;
}

.viewer-page {
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
  background: var(--c-primary);
}

/* ── Toolbar ────────────────────────────────────────────────── */
.viewer-toolbar {
  height: var(--toolbar-h);
  background: var(--c-primary);
  display: flex;
  align-items: center;
  padding: 0 1.25rem;
  gap: 1.25rem;
  flex-shrink: 0;
  border-bottom: 1px solid rgba(255,255,255,.1);
}
.viewer-back {
  color: rgba(255,255,255,.7);
  display: flex; align-items: center; gap: 0.4rem;
  font-size: 0.85rem;
  transition: color .15s;
}
.viewer-back:hover { color: #fff; }
.viewer-title {
  color: #fff;
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 1rem;
}
.viewer-room-tabs {
  display: flex;
  gap: 0.25rem;
  background: rgba(255,255,255,.08);
  border-radius: var(--r);
  padding: 0.25rem;
  margin: 0 auto;
}
.viewer-room-tab {
  padding: 0.4rem 1rem;
  border-radius: 6px;
  font-size: 0.82rem;
  font-weight: 600;
  color: rgba(255,255,255,.6);
  cursor: pointer;
  transition: all .15s;
  border: none;
  background: none;
}
.viewer-room-tab:hover { background: rgba(255,255,255,.1); color: #fff; }
.viewer-room-tab.active { background: var(--c-accent); color: #fff; }
.viewer-actions {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  margin-left: auto;
}
.viewer-btn {
  display: flex; align-items: center; gap: 0.4rem;
  padding: 0.45rem 0.9rem;
  border-radius: var(--r);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all .15s;
}
.viewer-btn-ghost { background: rgba(255,255,255,.1); color: rgba(255,255,255,.8); }
.viewer-btn-ghost:hover { background: rgba(255,255,255,.18); color: #fff; }
.viewer-btn-accent { background: var(--c-accent); color: #fff; }
.viewer-btn-accent:hover { background: #b0801e; }

/* ── Main row (canvas + panel) ──────────────────────────────── */
.viewer-body {
  flex: 1;
  display: flex;
  overflow: hidden;
}

/* ── Canvas area ────────────────────────────────────────────── */
.viewer-canvas-wrap {
  flex: 1;
  position: relative;
  overflow: hidden;
}
#viewer-canvas {
  width: 100%;
  height: 100%;
  display: block;
}
.viewer-hint {
  position: absolute;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0,0,0,.55);
  color: rgba(255,255,255,.9);
  font-size: 0.8rem;
  padding: 0.5rem 1rem;
  border-radius: 99px;
  pointer-events: none;
  backdrop-filter: blur(4px);
  white-space: nowrap;
  transition: opacity .3s;
}
.viewer-hint.hidden { opacity: 0; }
.viewer-selected-label {
  position: absolute;
  top: 1rem;
  left: 1rem;
  background: rgba(201,146,42,.9);
  color: #fff;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 0.4rem 0.9rem;
  border-radius: 99px;
  pointer-events: none;
  backdrop-filter: blur(4px);
  transition: opacity .3s;
}
.viewer-selected-label.hidden { opacity: 0; }

/* ── Material panel ─────────────────────────────────────────── */
.viewer-panel {
  width: var(--panel-w);
  background: var(--c-surface);
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform .3s cubic-bezier(.4,0,.2,1);
  flex-shrink: 0;
  position: relative;
  box-shadow: -8px 0 32px rgba(0,0,0,.15);
}
.viewer-panel.open { transform: translateX(0); }
.viewer-panel-header {
  display: flex;
  align-items: center;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--c-border);
  gap: 0.75rem;
  flex-shrink: 0;
}
.viewer-panel-title {
  flex: 1;
  font-family: 'Montserrat', sans-serif;
  font-size: 0.9rem;
  font-weight: 700;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.viewer-panel-close {
  width: 30px; height: 30px;
  border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  color: var(--c-muted);
  font-size: 1.1rem;
  cursor: pointer;
  transition: all .12s;
}
.viewer-panel-close:hover { background: var(--c-bg); color: var(--c-text); }
.viewer-panel-cat-tabs {
  display: flex;
  gap: 0.25rem;
  padding: 0.75rem;
  overflow-x: auto;
  flex-shrink: 0;
  border-bottom: 1px solid var(--c-border);
}
.viewer-panel-cat-tab {
  white-space: nowrap;
  padding: 0.3rem 0.75rem;
  border-radius: 99px;
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  border: 1.5px solid var(--c-border);
  color: var(--c-muted);
  background: none;
  transition: all .12s;
}
.viewer-panel-cat-tab:hover { border-color: var(--c-accent); color: var(--c-accent); }
.viewer-panel-cat-tab.active { border-color: var(--c-accent); background: var(--c-accent); color: #fff; }
.viewer-panel-body { flex: 1; overflow-y: auto; padding: 0.75rem; }
.viewer-materials-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.6rem;
}
.viewer-material-item {
  border-radius: var(--r);
  overflow: hidden;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all .15s;
}
.viewer-material-item:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,0,0,.12); }
.viewer-material-item.applied { border-color: var(--c-accent); }
.viewer-material-thumb {
  aspect-ratio: 1;
  background: var(--c-bg);
  overflow: hidden;
}
.viewer-material-thumb img { width: 100%; height: 100%; object-fit: cover; }
.viewer-material-thumb .no-img {
  width: 100%; height: 100%;
  display: flex; align-items: center; justify-content: center;
  color: var(--c-border);
}
.viewer-material-label {
  padding: 0.4rem 0.5rem;
  font-size: 0.72rem;
  font-weight: 600;
  line-height: 1.2;
  color: var(--c-text);
  background: var(--c-surface);
  text-align: center;
}
.viewer-panel-empty {
  text-align: center;
  padding: 2.5rem 1rem;
  color: var(--c-muted);
  font-size: 0.85rem;
}
.viewer-panel-loading {
  display: flex; align-items: center; justify-content: center;
  padding: 2rem;
  gap: 0.5rem;
  color: var(--c-muted);
  font-size: 0.85rem;
}
.spinner {
  width: 20px; height: 20px;
  border: 2px solid var(--c-border);
  border-top-color: var(--c-accent);
  border-radius: 50%;
  animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Help overlay ───────────────────────────────────────────── */
.viewer-help {
  position: absolute;
  inset: 0;
  background: rgba(28,43,74,.7);
  z-index: 10;
  display: flex; align-items: center; justify-content: center;
  backdrop-filter: blur(4px);
}
.viewer-help.hidden { display: none; }
.viewer-help-card {
  background: var(--c-surface);
  border-radius: var(--r-lg);
  padding: 2rem;
  max-width: 340px;
  text-align: center;
}
.viewer-help-card h3 { font-family: 'Montserrat', sans-serif; margin-bottom: 0.75rem; }
.viewer-help-card ul {
  text-align: left;
  font-size: 0.875rem;
  color: var(--c-muted);
  margin: 1rem 0;
  line-height: 2;
}
.viewer-help-card ul li::before { content: '• '; color: var(--c-accent); }

@media (max-width: 768px) {
  .viewer-panel { width: 100%; position: absolute; right: 0; bottom: 0; height: 50%; }
  .viewer-room-tabs { font-size: 0.75rem; }
  .viewer-actions { display: none; }
}