/* === Upload Section === */
.upload-section { margin-bottom: 20px; }
.upload-label {
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--muted);
  text-transform: uppercase;
  display: block;
  margin-bottom: 8px;
}
.upload-opt {
  font-weight: 400;
  text-transform: none;
  letter-spacing: 0;
  color: var(--accent);
}
.upload-dropzone {
  border: 2px dashed var(--border);
  border-radius: 8px;
  padding: 20px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
  background: var(--bg);
}
.upload-dropzone:hover,
.upload-dropzone.drag-over { border-color: var(--accent); background: var(--bg-warm); }
.dropzone-inner { display: flex; flex-direction: column; gap: 4px; align-items: center; }
.dropzone-hint { font-size: 0.875rem; font-weight: 500; color: var(--fg); }
.dropzone-formats { font-size: 0.72rem; color: var(--muted); }
.upload-progress { margin-top: 8px; font-size: 0.8rem; color: var(--accent); font-weight: 500; }
.upload-error { margin-top: 8px; font-size: 0.8rem; color: #EF4444; }
.upload-preview {
  position: relative;
  margin-top: 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  background: var(--bg-warm);
  max-height: 140px;
}
.upload-preview img {
  width: 100%;
  height: 140px;
  object-fit: cover;
  display: block;
}
.upload-remove {
  position: absolute;
  top: 6px;
  right: 6px;
  background: rgba(26,25,22,0.7);
  color: #fff;
  border: none;
  border-radius: 50%;
  width: 22px;
  height: 22px;
  font-size: 0.75rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}
.upload-remove:hover { background: #EF4444; }
.divider {
  height: 1px;
  background: var(--border);
  margin: 20px 0;
}

/* === Heatmap Row === */
.heatmap-row { display: flex; gap: 16px; align-items: flex-start; }
.heatmap-container { flex: 1; min-width: 0; }
.floorplan-preview-container { width: 120px; flex-shrink: 0; }
.floorplan-preview-label {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 6px;
}
.floorplan-preview-container img {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: #fff;
}

/* === Analyzer Page Styles === */

.analyzer-page {
  min-height: 100vh;
}

/* === Page Header === */
.analyzer-header {
  padding: 48px 0 32px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}
.analyzer-header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
}
.page-headline {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--fg);
  margin-bottom: 12px;
  line-height: 1.1;
}
.page-sub {
  font-size: 1rem;
  color: var(--muted);
  max-width: 520px;
  line-height: 1.65;
}

/* === Samples Section === */
.samples-section {
  padding: 40px 0;
  background: var(--bg-warm);
  border-bottom: 1px solid var(--border);
}
.samples-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
}
.section-heading {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 20px;
}
.sample-cards {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.sample-card {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 18px;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--fg);
  transition: background 0.15s, border-color 0.15s, transform 0.1s;
  box-shadow: 0 1px 4px rgba(26,25,22,0.06);
}
.sample-card:hover {
  background: var(--fg);
  color: var(--bg);
  border-color: var(--fg);
  transform: translateY(-1px);
}
.sample-card-arrow {
  color: var(--accent);
  font-size: 1rem;
  transition: transform 0.15s;
}
.sample-card:hover .sample-card-arrow { color: var(--accent-light); }

/* === Editor Section === */
.editor-section {
  padding: 48px 0 80px;
  background: var(--bg);
}
.editor-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
  display: grid;
  grid-template-columns: 420px 1fr;
  gap: 48px;
  align-items: start;
}

/* === Editor Panel === */
.editor-panel {
  background: #FFFFFF;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 32px;
  box-shadow: 0 2px 16px rgba(26,25,22,0.06);
}
.panel-heading {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 16px;
}
.form-group label {
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--muted);
  text-transform: uppercase;
}
.form-group input,
.form-group select {
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--fg);
  background: var(--bg);
  transition: border-color 0.15s;
  appearance: none;
}
.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent);
  background: #fff;
}

.form-row {
  display: flex;
  gap: 12px;
}
.form-row .form-group {
  flex: 1;
  margin-bottom: 16px;
}

.materials-grid {
  margin: 8px 0 24px;
  padding: 20px;
  background: var(--bg-warm);
  border-radius: 8px;
  border: 1px solid var(--border);
}
.materials-heading {
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 16px;
}

/* === Rooms Config === */
.rooms-config {
  margin-bottom: 28px;
}
.rooms-heading {
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 12px;
}
.rooms-hint {
  font-weight: 400;
  color: var(--muted);
  font-size: 0.78rem;
}
#roomsList {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 10px;
}
.room-row {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 10px;
}
.room-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--muted);
  width: 48px;
  flex-shrink: 0;
}
.room-input {
  padding: 6px 8px;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 0.82rem;
  font-family: var(--font-body);
  width: 62px;
  background: #fff;
}
.room-select {
  padding: 6px 8px;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 0.82rem;
  font-family: var(--font-body);
  background: #fff;
  margin-left: 4px;
}
.room-x {
  font-size: 0.75rem;
  color: var(--muted);
}
.room-remove {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--muted);
  font-size: 1.1rem;
  padding: 2px 6px;
  border-radius: 4px;
  margin-left: 4px;
}
.room-remove:hover { background: var(--border); color: var(--fg); }

.btn-add-room {
  background: none;
  border: 1px dashed var(--border);
  border-radius: 6px;
  padding: 8px 16px;
  font-size: 0.82rem;
  font-family: var(--font-body);
  color: var(--muted);
  cursor: pointer;
  width: 100%;
  transition: border-color 0.15s, color 0.15s;
}
.btn-add-room:hover { border-color: var(--accent); color: var(--accent); }

/* === Analyze Button === */
.btn-analyze {
  width: 100%;
  padding: 14px;
  background: var(--fg);
  color: var(--bg);
  border: none;
  border-radius: 8px;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  letter-spacing: -0.01em;
  transition: background 0.15s, transform 0.1s;
  margin-top: 8px;
}
.btn-analyze:hover { background: var(--accent); transform: translateY(-1px); }
.btn-analyze:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }

/* === Results Panel === */
.results-panel {
  background: #FFFFFF;
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 16px rgba(26,25,22,0.06);
  min-height: 400px;
}
.results-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 80px 40px;
  color: var(--muted);
  text-align: center;
  gap: 16px;
}
.results-empty p {
  font-size: 0.9rem;
  color: var(--muted);
}

.results-content {
  padding: 32px;
}

/* RT60 Card */
.rt60-card {
  text-align: center;
  padding: 32px 24px;
  background: var(--bg-warm);
  border-radius: 10px;
  margin-bottom: 28px;
  border: 1px solid var(--border);
}
.rt60-value {
  font-family: var(--font-display);
  font-size: 4rem;
  font-weight: 800;
  color: var(--fg);
  letter-spacing: -0.04em;
  line-height: 1;
}
.rt60-label {
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 6px;
}
.rt60-target {
  font-size: 0.82rem;
  color: var(--accent);
  margin-top: 8px;
  font-weight: 500;
}

/* Heatmap */
.heatmap-section { margin-bottom: 28px; }
.results-heading {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.78rem;
}
.heatmap-container {
  background: #F2EDE5;
  border-radius: 8px;
  border: 1px solid var(--border);
  overflow: hidden;
  margin-bottom: 12px;
}
#heatmapSvg {
  width: 100%;
  height: auto;
  display: block;
}
.heatmap-legend {
  display: flex;
  gap: 20px;
  justify-content: center;
}
.legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  color: var(--muted);
}
.legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

/* Treatment Spec */
.treatment-summary {
  font-size: 0.875rem;
  color: var(--muted);
  line-height: 1.65;
  margin-bottom: 16px;
  padding: 12px 16px;
  background: var(--bg);
  border-radius: 6px;
  border: 1px solid var(--border);
}
.treatment-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.treatment-item {
  padding: 14px 16px;
  border-radius: 8px;
  border: 1px solid var(--border);
}
.treatment-high { border-color: #FCA5A5; background: #FEF2F2; }
.treatment-medium { border-color: #FDE68A; background: #FFFBEB; }
.treatment-low { border-color: #BBF7D0; background: #F0FDF4; }

.treatment-type {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 6px;
}
.treatment-badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 20px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.treatment-badge-absorber { background: #DBEAFE; color: #1D4ED8; }
.treatment-badge-diffuser { background: #D1FAE5; color: #065F46; }
.treatment-badge-bass_trap { background: #FEE2E2; color: #991B1B; }
.treatment-badge-furniture { background: #FEF3C7; color: #92400E; }
.treatment-badge-monitoring { background: #F3F4F6; color: #374151; }

.treatment-qty {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--fg);
  background: rgba(26,25,22,0.08);
  padding: 2px 8px;
  border-radius: 4px;
}
.treatment-desc {
  font-size: 0.82rem;
  color: var(--muted);
  line-height: 1.55;
}

/* === Responsive === */
@media (max-width: 900px) {
  .editor-inner {
    grid-template-columns: 1fr;
    padding: 0 20px;
  }
  .analyzer-header-inner { padding: 0 20px; }
  .samples-inner { padding: 0 20px; }
  .form-row { flex-direction: column; gap: 0; }
  .sample-cards { gap: 8px; }
  .room-row { flex-wrap: wrap; }
  .room-label { width: auto; }
  .room-input { width: 55px; }
  .room-select { margin-left: 0; margin-top: 4px; width: 100%; }
}