:root {
  --lhv-primary: #8B4513;
  --lhv-secondary: #D2691E;
  --lhv-accent: #DAA520;
  --lhv-background: #FFF8F0;
  --lhv-card-background: #FFFFFF;
  --lhv-text: #333333;
  --lhv-text-light: #666666;
  --lhv-button-text: #FFFFFF;
  --lhv-border: #E0D5C8;
}

.lhv-container { max-width: 1100px; margin: 0 auto; padding: 16px; font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; }

.lhv-header {
  text-align: center; padding: 20px 16px;
  background: linear-gradient(135deg, var(--lhv-primary), var(--lhv-secondary));
  color: var(--lhv-button-text); margin-bottom: 16px; border-radius: 10px;
}
.lhv-header h2 { font-size: 1.8rem; margin-bottom: 0; color: var(--lhv-button-text); }

.lhv-comparison-view {
  display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 16px;
}

.lhv-comparison-panel {
  position: relative; border-radius: 10px; overflow: hidden;
  background: var(--lhv-card-background); border: 1px solid var(--lhv-border);
  box-shadow: 0 2px 10px rgba(0,0,0,0.08); display: flex; flex-direction: column;
}

.lhv-comp-label {
  position: absolute; top: 8px; left: 8px;
  background: rgba(0,0,0,0.55); color: #fff; padding: 3px 12px;
  border-radius: 16px; font-size: 0.75rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.05em; z-index: 3;
  backdrop-filter: blur(4px);
}
.lhv-comp-label-after { background: rgba(139,69,19,0.75); }

.lhv-comp-image {
  width: 100%; height: 100%; display: none; object-fit: cover; min-height: 0;
}
.lhv-comp-image.visible { display: block; }

.lhv-upload-zone {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 40px 20px; cursor: pointer; transition: all 0.3s;
  background: var(--lhv-background); border: 3px dashed var(--lhv-border);
  margin: 8px; border-radius: 8px; flex: 1; min-height: 280px;
}
.lhv-upload-zone:hover, .lhv-upload-zone.dragover {
  border-color: var(--lhv-primary); background: rgba(139,69,19,0.05);
}
.lhv-upload-zone .lhv-upload-icon { font-size: 2.5rem; margin-bottom: 10px; color: var(--lhv-primary); }
.lhv-upload-zone p { color: var(--lhv-text-light); margin-bottom: 4px; font-size: 0.9rem; }
.lhv-browse-text { color: var(--lhv-primary); font-weight: 600; text-decoration: underline; }
.lhv-upload-hint { font-size: 0.78rem; opacity: 0.5; margin-top: 4px; }

.lhv-change-photo-btn {
  display: none; position: absolute; bottom: 10px; left: 50%; transform: translateX(-50%);
  padding: 6px 16px; background: rgba(210,105,30,0.85); color: #fff;
  border: none; border-radius: 6px; cursor: pointer; font-size: 0.8rem;
  font-weight: 600; z-index: 3; backdrop-filter: blur(4px); transition: opacity 0.25s; opacity: 0;
}
#lhv-before-panel:hover .lhv-change-photo-btn.visible { opacity: 1; }
.lhv-change-photo-btn.visible { display: block; }

.lhv-after-placeholder {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  flex: 1; min-height: 280px; color: var(--lhv-text-light);
  background: var(--lhv-background); margin: 8px; border-radius: 8px; border: 3px dashed var(--lhv-border);
}
.lhv-placeholder-icon { font-size: 2.5rem; margin-bottom: 10px; opacity: 0.4; }
.lhv-after-placeholder p { font-size: 0.9rem; opacity: 0.5; }

.lhv-loading {
  display: none; flex-direction: column; align-items: center; justify-content: center;
  flex: 1; min-height: 280px; padding: 30px;
}
.lhv-spinner {
  width: 48px; height: 48px; border: 4px solid var(--lhv-border);
  border-top: 4px solid var(--lhv-primary); border-radius: 50%;
  animation: lhvSpin 1s linear infinite; margin-bottom: 14px;
}
@keyframes lhvSpin { to { transform: rotate(360deg); } }
.lhv-loading p { color: var(--lhv-text-light); font-size: 0.95rem; }
.lhv-loading-tip { font-size: 0.8rem; margin-top: 4px; opacity: 0.6; }

.lhv-panel-after { position: relative; }

.lhv-result-overlay {
  position: absolute; bottom: 0; left: 0; right: 0;
  display: none; gap: 6px; padding: 10px;
  background: linear-gradient(transparent, rgba(0,0,0,0.6));
  justify-content: center; opacity: 0; transition: opacity 0.25s;
}
.lhv-result-overlay.visible { display: flex; }
.lhv-panel-after:hover .lhv-result-overlay.visible { opacity: 1; }

.lhv-btn-overlay {
  padding: 7px 12px; font-size: 0.78rem; font-weight: 600;
  border-radius: 6px; cursor: pointer; border: none; transition: all 0.2s;
  display: inline-flex; align-items: center; gap: 4px; backdrop-filter: blur(4px);
}
.lhv-btn-dl { background: rgba(218,165,32,0.9); color: #fff; }
.lhv-btn-qt { background: rgba(139,69,19,0.9); color: #fff; }
.lhv-btn-ch { background: rgba(255,255,255,0.9); color: #333; }
.lhv-btn-overlay:hover { filter: brightness(1.15); transform: translateY(-1px); }

.lhv-error {
  background: #FFF0F0; border: 1px solid #FFB3B3; color: #CC0000;
  padding: 12px 16px; border-radius: 8px; margin-bottom: 12px; display: none; font-size: 0.9rem;
}

.lhv-card {
  background: var(--lhv-card-background); border-radius: 10px; border: 1px solid var(--lhv-border);
  padding: 20px; margin-bottom: 12px; box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}
.lhv-card h3 { color: var(--lhv-primary); margin-bottom: 12px; font-size: 1.2rem; }

.lhv-manufacturer-tabs {
  display: flex; gap: 0; margin-bottom: 14px; border-radius: 8px;
  overflow: hidden; border: 2px solid var(--lhv-primary);
}
.lhv-manufacturer-tab {
  flex: 1; padding: 10px 20px; text-align: center; cursor: pointer;
  font-weight: 600; font-size: 0.95rem; border: none;
  background: var(--lhv-card-background); color: var(--lhv-primary); transition: all 0.3s;
}
.lhv-manufacturer-tab.active { background: var(--lhv-primary); color: var(--lhv-button-text); }

.lhv-color-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(110px, 1fr)); gap: 10px; }

.lhv-color-chip {
  cursor: pointer; border-radius: 8px; overflow: hidden; border: 3px solid transparent;
  transition: all 0.3s; background: var(--lhv-card-background); box-shadow: 0 1px 4px rgba(0,0,0,0.08);
}
.lhv-color-chip:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,0,0,0.12); }
.lhv-color-chip.selected { border-color: var(--lhv-accent); transform: translateY(-2px); box-shadow: 0 4px 16px rgba(218,165,32,0.3); }
.lhv-color-chip img { width: 100%; height: 75px; object-fit: cover; }
.lhv-color-name { padding: 6px; text-align: center; font-weight: 600; font-size: 0.78rem; color: var(--lhv-text); }

.lhv-color-panel { display: none; }
.lhv-color-panel.active { display: block; }

.lhv-selected-info { margin-top: 12px; padding: 10px; border-radius: 8px; background: var(--lhv-background); text-align: center; }


.lhv-estimator-form { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 16px; margin-bottom: 12px; }

.lhv-form-group label { display: block; font-weight: 600; margin-bottom: 4px; color: var(--lhv-text); font-size: 0.9rem; }
.lhv-form-group select, .lhv-form-group input {
  width: 100%; padding: 10px 12px; border: 2px solid var(--lhv-border);
  border-radius: 8px; font-size: 0.95rem; background: var(--lhv-card-background);
  color: var(--lhv-text); transition: border-color 0.3s;
}
.lhv-form-group select:focus, .lhv-form-group input:focus { outline: none; border-color: var(--lhv-primary); }

.lhv-estimate-result {
  background: linear-gradient(135deg, var(--lhv-primary), var(--lhv-secondary));
  color: var(--lhv-button-text); padding: 16px; border-radius: 8px;
  text-align: center; display: none;
}
.lhv-price-range { font-size: 1.6rem; font-weight: 700; margin: 6px 0; }
.lhv-disclaimer { font-size: 0.8rem; opacity: 0.85; }

.lhv-restoration-description {
  margin-bottom: 16px;
  padding: 14px 16px;
  background: var(--lhv-background);
  border-radius: 8px;
  border-left: 3px solid var(--lhv-accent);
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--lhv-text);
}
.lhv-restoration-description p { margin: 0; }

.lhv-price-disclaimer {
  font-size: 0.8rem;
  opacity: 0.85;
  margin-top: 8px;
  line-height: 1.4;
  font-style: italic;
}

.lhv-generate-area { text-align: center; margin-bottom: 12px; }

.lhv-btn-primary {
  background: var(--lhv-primary); color: var(--lhv-button-text); border: none;
  padding: 14px 28px; font-size: 1.05rem; font-weight: 600; border-radius: 8px;
  cursor: pointer; transition: all 0.3s; display: inline-flex; align-items: center;
  gap: 8px; white-space: nowrap;
}
.lhv-btn-primary:hover { filter: brightness(1.1); transform: translateY(-1px); }
.lhv-btn-primary:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

@media (max-width: 768px) {
  .lhv-container { padding: 10px; }
  .lhv-header { padding: 16px 12px; margin-bottom: 12px; }
  .lhv-header h2 { font-size: 1.3rem; }
  .lhv-header p { font-size: 0.85rem; }
  .lhv-comparison-view { grid-template-columns: 1fr; gap: 10px; }
  .lhv-upload-zone { min-height: 200px; padding: 30px 16px; }
  .lhv-after-placeholder { min-height: 200px; }
  .lhv-card { padding: 16px; margin-bottom: 10px; }
  .lhv-card h3 { font-size: 1.05rem; margin-bottom: 10px; }
  .lhv-color-grid { grid-template-columns: repeat(auto-fill, minmax(90px, 1fr)); gap: 6px; }
  .lhv-color-chip img { height: 60px; }
  .lhv-color-name { padding: 4px; font-size: 0.72rem; }
  .lhv-estimator-form { grid-template-columns: 1fr; gap: 8px; }
  .lhv-btn-primary { width: 100%; justify-content: center; }
  .lhv-result-overlay.visible { opacity: 1; }
  .lhv-btn-overlay { font-size: 0.72rem; padding: 5px 8px; }
  .lhv-change-photo-btn.visible { opacity: 1; }
  .lhv-comp-label { font-size: 0.7rem; padding: 2px 10px; }
}