.workspace-page {
  min-height: calc(100vh - 68px - 61px);
  padding: 3.5rem 0 5rem;
  position: relative;
}
.workspace-page .glow-orb.orb-1 { width: 420px; height: 420px; background: var(--accent-violet); top: -100px; left: -160px; }
.workspace-page .glow-orb.orb-2 { width: 360px; height: 360px; background: var(--accent-cyan); bottom: -140px; right: -140px; animation-delay: -8s; }

.workspace-header {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 560px;
  margin: 0 auto 2.5rem;
}
.workspace-header h1 { font-size: clamp(1.7rem, 3vw, 2.2rem); font-weight: 800; margin: 1rem 0 0.6rem; letter-spacing: -0.01em; }
.workspace-header p { color: var(--text-secondary); margin: 0; }

.workspace-card {
  position: relative;
  z-index: 1;
  max-width: 640px;
  margin: 0 auto;
  padding: 2rem;
}

/* ── Dropzone ────────────────────────────────────────────── */
.dropzone {
  border: 1.5px dashed var(--border-strong);
  border-radius: var(--radius-md);
  padding: 2.5rem 1.5rem;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
  margin-bottom: 1.25rem;
}
.dropzone:hover, .dropzone:focus-visible, .dropzone.dragover {
  border-color: var(--accent-cyan);
  background: rgba(6, 182, 212, 0.05);
  outline: none;
}

.dropzone-empty { color: var(--text-secondary); }
.dropzone-empty .upload-icon {
  width: 52px; height: 52px;
  border-radius: 50%;
  background: var(--gradient-brand);
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  margin: 0 auto 1rem;
}
.dropzone-title { margin: 0.25rem 0; color: var(--text-primary); font-weight: 600; }
.dropzone-hint { margin: 0; font-size: 0.85rem; color: var(--text-muted); }

.dropzone-preview-frame {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  max-height: 280px;
}
.dropzone-preview img { max-width: 100%; max-height: 280px; border-radius: var(--radius-md); display: block; margin: 0 auto 0.85rem; }

.scan-overlay {
  position: absolute;
  inset: 0;
  background: rgba(5, 6, 10, 0.35);
  display: none;
  align-items: center;
  justify-content: center;
}
.scan-overlay.active { display: flex; }
.scan-overlay .scan-line {
  position: absolute;
  left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent-cyan), transparent);
  box-shadow: 0 0 20px var(--accent-cyan);
  animation: scan-sweep 1.6s ease-in-out infinite;
}
@keyframes scan-sweep {
  0%   { top: 0%; }
  100% { top: 100%; }
}
.scan-overlay-label {
  position: relative;
  background: rgba(5, 6, 10, 0.75);
  border: 1px solid var(--border-strong);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
}

.dropzone-preview-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  flex-wrap: wrap;
}
.dot-sep { color: var(--border-strong); }

/* ── Advanced settings (progressive disclosure) ─────────── */
details.advanced {
  border-top: 1px solid var(--border);
  margin-top: 0.25rem;
}
details.advanced summary {
  cursor: pointer;
  padding: 0.9rem 0;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
  list-style: none;
  display: flex;
  align-items: center;
}
details.advanced summary::-webkit-details-marker { display: none; }
details.advanced summary::before {
  content: "›";
  display: inline-block;
  margin-right: 0.5rem;
  font-size: 1.1rem;
  transition: transform 0.15s;
}
details[open].advanced summary::before { transform: rotate(90deg); }

.advanced-body { padding: 0.25rem 0 1rem; }

.checkbox {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 1.1rem;
}

.advanced-body h4 {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin: 0 0 0.75rem;
}

.sliders-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem 1.5rem;
  margin-bottom: 1.25rem;
}
.slider-item { display: flex; flex-direction: column; gap: 0.3rem; font-size: 0.85rem; }
.slider-item label { color: var(--text-secondary); text-transform: capitalize; }
.slider-item input[type="range"] { width: 100%; accent-color: var(--accent-cyan); }
.slider-item span { color: var(--text-muted); font-size: 0.78rem; }

.legend { display: flex; flex-wrap: wrap; gap: 0.5rem 1.25rem; }
.legend-item { display: flex; align-items: center; gap: 0.5em; font-size: 0.82rem; color: var(--text-secondary); }

@media (max-width: 560px) {
  .sliders-grid { grid-template-columns: 1fr; }
}