/* BoxPreview 3D — themed styles (light / dark via CSS variables) */

:root, html[data-theme="light"] {
  --bg: #f1f5f9;
  --panel-bg: #ffffff;
  --panel-header-bg: #ffffff;
  --border: #e2e8f0;
  --border-strong: #cbd5e1;
  --text: #1e293b;
  --text-muted: #64748b;
  --text-faint: #94a3b8;
  --accent: #d97706;
  --accent-soft: #fef3c7;
  --accent-text: #b45309;
  --cyan: #0891b2;
  --cyan-soft: #cffafe;
  --cyan-text: #0e7490;
  --input-bg: #f8fafc;
  --card-bg: #f8fafc;
  --card-hover: #f1f5f9;
  --hud-bg: rgba(255, 255, 255, 0.85);
  --hint: #64748b;
  --shadow: 0 1px 3px rgba(15, 23, 42, 0.08);
}

html[data-theme="dark"] {
  --bg: #0f172a;
  --panel-bg: #1e293bE6;
  --panel-header-bg: #1e293b;
  --border: #334155;
  --border-strong: #475569;
  --text: #f1f5f9;
  --text-muted: #94a3b8;
  --text-faint: #64748b;
  --accent: #f59e0b;
  --accent-soft: #f59e0b1a;
  --accent-text: #fbbf24;
  --cyan: #22d3ee;
  --cyan-soft: #22d3ee1a;
  --cyan-text: #67e8f9;
  --input-bg: #0f172a;
  --card-bg: #0f172a99;
  --card-hover: #0f172a;
  --hud-bg: rgba(15, 23, 42, 0.75);
  --hint: #64748b;
  --shadow: none;
}

html, body {
  background: var(--bg);
  color: var(--text);
  transition: background 0.25s, color 0.25s;
}

.panel {
  background: var(--panel-bg);
  border-right: 1px solid var(--border);
  backdrop-filter: blur(8px);
  transition: margin-left 0.25s ease;
}
.panel.collapsed { margin-left: -380px; }

#btn-expand {
  background: var(--panel-bg);
  box-shadow: var(--shadow);
}
.panel-header {
  background: var(--panel-header-bg);
  border-bottom: 1px solid var(--border);
}
.section-divider { border-bottom: 1px solid var(--border); }
.muted { color: var(--text-muted); }
.accent-text { color: var(--accent); }

.theme-toggle {
  width: 34px; height: 34px;
  border-radius: 9999px;
  border: 1px solid var(--border-strong);
  background: var(--card-bg);
  color: var(--text-muted);
  transition: all 0.2s;
}
.theme-toggle:hover { color: var(--accent-text); border-color: var(--accent); }

.section-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  font-weight: 700;
}

.step-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.25rem; height: 1.25rem;
  border-radius: 9999px;
  background: var(--accent);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 800;
}

.material-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 10px 6px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--card-bg);
  cursor: pointer;
  transition: all 0.15s;
  font-size: 0.72rem;
  color: var(--text-muted);
  text-align: center;
  box-shadow: var(--shadow);
}
.material-card:hover { border-color: var(--border-strong); }
.material-card.mat-active {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent-text);
}
.material-swatch {
  width: 100%; height: 34px;
  border-radius: 6px;
  border: 1px solid var(--border);
}

.dim-label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.7rem;
  color: var(--text-muted);
}
.dim-input {
  background: var(--input-bg);
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  padding: 6px 8px;
  color: var(--text);
  font-size: 0.85rem;
  width: 100%;
}
.dim-input:focus { outline: none; border-color: var(--accent); }

.preset-btn {
  font-size: 0.68rem;
  padding: 4px 10px;
  border-radius: 9999px;
  background: var(--card-bg);
  border: 1px solid var(--border-strong);
  color: var(--text-muted);
  transition: all 0.15s;
}
.preset-btn:hover { color: var(--accent-text); border-color: var(--accent); }

.mode-btn {
  font-size: 0.75rem;
  padding: 8px 6px;
  border-radius: 10px;
  border: 1px solid var(--border-strong);
  background: var(--card-bg);
  color: var(--text-muted);
  transition: all 0.15s;
}
.mode-btn:hover { border-color: var(--text-faint); }
.mode-btn.mode-active {
  border-color: var(--cyan);
  background: var(--cyan-soft);
  color: var(--cyan-text);
}

.color-input { border: 1px solid var(--border-strong); }

.ink-swatch {
  width: 30px; height: 30px;
  border-radius: 8px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.1s;
}
.ink-swatch:hover { transform: scale(1.1); }
.ink-swatch.ink-active {
  border-color: var(--panel-bg);
  box-shadow: 0 0 0 2px var(--accent);
}

.face-tab {
  font-size: 0.7rem;
  padding: 6px 4px;
  border-radius: 8px;
  border: 1px solid var(--border-strong);
  background: var(--card-bg);
  color: var(--text-muted);
  transition: all 0.15s;
  position: relative;
}
.face-tab:hover { border-color: var(--text-faint); }
.face-tab.face-active {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent-text);
}
.face-tab .art-dot {
  position: absolute;
  top: 3px; right: 5px;
  width: 6px; height: 6px;
  border-radius: 9999px;
  background: var(--cyan);
}

.face-editor-box {
  background: var(--card-bg);
  border: 1px solid var(--border);
}

#upload-zone {
  border: 2px dashed var(--border-strong);
  transition: all 0.15s;
}
#upload-zone:hover, #upload-zone.dragover {
  border-color: var(--accent);
  background: var(--accent-soft);
}
.upload-icon { color: var(--text-faint); }

.drag-tip {
  background: var(--cyan-soft);
  color: var(--cyan-text);
  border: 1px solid var(--cyan);
}

.slider-label {
  display: flex;
  flex-direction: column;
  font-size: 0.7rem;
  color: var(--text-muted);
  gap: 2px;
  position: relative;
}
.slider-label > span {
  position: absolute;
  right: 0; top: 0;
  color: var(--accent-text);
}

input[type="range"] { accent-color: var(--accent); height: 18px; }

.remove-btn { color: #ef4444; }
.remove-btn:hover { color: #dc2626; }

.copy-btn {
  background: var(--card-hover);
  border: 1px solid var(--border-strong);
  color: var(--text-muted);
}
.copy-btn:hover { color: var(--accent-text); border-color: var(--accent); }

.view-btn {
  font-size: 0.72rem;
  padding: 6px 12px;
  border-radius: 9999px;
  border: 1px solid var(--border-strong);
  background: var(--card-bg);
  color: var(--text-muted);
  transition: all 0.15s;
}
.view-btn:hover { border-color: var(--text-faint); color: var(--text); }

/* Toggle switch */
.switch-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  color: var(--text-muted);
}
.switch { position: relative; display: inline-block; }
.switch input { position: absolute; opacity: 0; width: 0; height: 0; }
.switch-track {
  display: block;
  width: 38px; height: 21px;
  border-radius: 9999px;
  background: var(--border-strong);
  transition: background 0.2s;
  position: relative;
}
.switch-thumb {
  position: absolute;
  top: 2.5px; left: 3px;
  width: 16px; height: 16px;
  border-radius: 9999px;
  background: #fff;
  transition: transform 0.2s;
  box-shadow: 0 1px 2px rgba(0,0,0,0.25);
}
.switch input:checked + .switch-track { background: var(--accent); }
.switch input:checked + .switch-track .switch-thumb { transform: translateX(16px); }

/* HUD */
.hud {
  background: var(--hud-bg);
  color: var(--text);
  backdrop-filter: blur(6px);
  border: 1px solid var(--border);
}
.hud-material { color: var(--accent-text); }
.hud-print { color: var(--cyan-text); }
.hint-text { color: var(--hint); }

/* scrollbar */
#control-panel::-webkit-scrollbar { width: 8px; }
#control-panel::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 4px; }
#control-panel::-webkit-scrollbar-track { background: transparent; }

/* Loading overlay */
#loading-overlay {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  transition: opacity 0.35s;
}
.loader-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  color: var(--accent);
  font-size: 0.8rem;
}
.loader-box span { color: var(--text-muted); }
.loader-bar {
  width: 160px;
  height: 4px;
  border-radius: 9999px;
  background: var(--border);
  overflow: hidden;
}
.loader-fill {
  height: 100%;
  width: 40%;
  border-radius: 9999px;
  background: var(--accent);
  animation: loader-slide 1.1s ease-in-out infinite;
}
@keyframes loader-slide {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(400%); }
}

/* cursor states on canvas */
#three-canvas.cursor-grab { cursor: grab; }
#three-canvas.cursor-grabbing { cursor: grabbing; }

/* Share button & modal */
.share-btn {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 8px 14px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.18);
  transition: filter 0.15s;
}
.share-btn:hover { filter: brightness(1.1); }

#share-modal.flex { display: flex; }
.share-card {
  background: var(--panel-header-bg, #ffffff);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px;
  width: min(400px, calc(100vw - 32px));
  box-shadow: 0 12px 48px rgba(0, 0, 0, 0.35);
}
.share-mode-opt {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  cursor: pointer;
  font-size: 12px;
}
.share-mode-opt:has(input:checked) { border-color: var(--accent); background: var(--accent-soft, rgba(99, 130, 255, 0.08)); }
.share-mode-opt input { margin-top: 2px; accent-color: var(--accent); }