/* ============================================================
   Vectorizer — Premium Dark Studio Theme
   Scoped under .vectorizer-app
   ============================================================ */

.vectorizer-app {
  /* Default Design Tokens: Clean Studio Light Theme */
  --vk-bg:       #f8fafc;
  --vk-bg-mid:   #f1f5f9;
  --vk-card:     #ffffff;
  --vk-card-alt: #f8fafc;
  --vk-border:   #e2e8f0;
  --vk-border-h: #2563eb;
  --vk-text:     #0f172a;
  --vk-text-dim: #64748b;
  --vk-text-mid: #334155;
  --vk-accent:   #2563eb;
  --vk-accent-2: #7c3aed;
  --vk-success:  #059669;
  --vk-danger:   #dc2626;
  --vk-radius:   16px;
  --vk-radius-sm: 10px;
  --vk-shadow:   0 4px 20px rgba(15, 23, 42, 0.06);
  --vk-shadow-lg: 0 10px 30px rgba(15, 23, 42, 0.1);
  --vk-glow:     0 0 0 3px rgba(37, 99, 235, 0.15);

  max-width: 1080px;
  margin: 0 auto;
  padding: 40px 24px 80px;
  font-family: 'Inter', 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  color: var(--vk-text);
  line-height: 1.65;
  background: transparent;
}

/* Dark Mode Override: Premium Dark Studio Theme */
[data-theme="dark"] .vectorizer-app,
html.dark .vectorizer-app,
body.dark-mode .vectorizer-app {
  --vk-bg:       #080d1a;
  --vk-bg-mid:   #0d1526;
  --vk-card:     #111829;
  --vk-card-alt: #16213a;
  --vk-border:   rgba(90, 120, 200, 0.18);
  --vk-border-h: rgba(91, 140, 247, 0.45);
  --vk-text:     #e8eeff;
  --vk-text-dim: #94a3b8;
  --vk-text-mid: #cbd5e1;
  --vk-accent:   #5b8cf7;
  --vk-accent-2: #8b5cff;
  --vk-success:  #2dd4a0;
  --vk-danger:   #f87171;
  --vk-shadow:   0 4px 24px rgba(0, 0, 0, 0.45);
  --vk-shadow-lg: 0 8px 48px rgba(0, 0, 0, 0.6);
  --vk-glow:     0 0 0 3px rgba(91, 140, 247, 0.2);
}

.vectorizer-app * { box-sizing: border-box; }

.vk-skip-link {
  position: fixed;
  inset-inline-start: 16px;
  top: 12px;
  z-index: 10000;
  padding: 10px 14px;
  border-radius: 8px;
  background: #f59e0b;
  color: #0f172a;
  font-weight: 800;
  transform: translateY(-160%);
}

.vk-skip-link:focus { transform: translateY(0); }

.vectorizer-app :where(a, button, input, select, textarea, [tabindex]):focus-visible,
.vectorizer-navbar :where(a, button, input, select, [tabindex]):focus-visible,
.vectorizer-footer :where(a, button, [tabindex]):focus-visible {
  outline: 3px solid #f59e0b;
  outline-offset: 3px;
}

.vk-visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.testimonial-star-input:focus-visible + .testimonial-star {
  outline: 3px solid #f59e0b;
  outline-offset: 3px;
  border-radius: 4px;
}

.vk-noscript { margin-bottom: 20px; text-align: center; }
.vk-noscript p { margin-bottom: 12px; }

/* ──────────────────────────────────────────────────
   Cards
────────────────────────────────────────────────── */
.vectorizer-app .card {
  background: var(--vk-card);
  border: 1px solid var(--vk-border);
  border-radius: var(--vk-radius);
  padding: 24px;
  box-shadow: var(--vk-shadow);
  transition: border-color 0.2s, background-color 0.2s;
  contain: layout paint;
  transform: translateZ(0);
  backface-visibility: hidden;
}
.vectorizer-app .card:hover {
  border-color: var(--vk-border-h);
}

/* ──────────────────────────────────────────────────
   Header
────────────────────────────────────────────────── */
.vk-header {
  display: flex;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 12px 20px;
  margin-bottom: 32px;
  padding: 24px 28px;
  background: var(--vk-card);
  border: 1px solid var(--vk-border);
  border-radius: var(--vk-radius);
  box-shadow: var(--vk-shadow);
}

.vk-header h1 {
  flex: 1;
  font-size: 1.65rem;
  font-weight: 800;
  margin: 0;
  color: var(--vk-text);
  letter-spacing: -0.02em;
}

.vk-header-actions {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

.vk-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 30px;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  white-space: nowrap;
}
.vk-badge-pro {
  background: rgba(45, 212, 160, 0.12);
  color: var(--vk-success);
  border: 1px solid rgba(45, 212, 160, 0.25);
}
.vk-badge-trial {
  background: rgba(139, 92, 255, 0.12);
  color: #a78bff;
  border: 1px solid rgba(139, 92, 255, 0.25);
}

.vk-my-logos-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 7px 16px;
  background: rgba(91, 140, 247, 0.1);
  border: 1px solid rgba(91, 140, 247, 0.25);
  border-radius: 8px;
  color: var(--vk-accent);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 600;
  transition: all 0.2s;
  white-space: nowrap;
}
.vk-my-logos-link:hover {
  background: var(--vk-accent);
  border-color: var(--vk-accent-2);
  color: #ffffff;
}

/* ──────────────────────────────────────────────────
   Mode Switcher
────────────────────────────────────────────────── */
.vk-mode-switcher {
  display: flex;
  gap: 6px;
  margin-bottom: 28px;
  padding: 6px !important;
  background: var(--vk-bg-mid) !important;
  border: 1px solid var(--vk-border) !important;
  border-radius: 14px;
}

.vk-mode-btn {
  flex: 1;
  padding: 13px 20px;
  border: 1px solid transparent;
  border-radius: 10px;
  background: transparent;
  color: var(--vk-text-dim);
  font-size: 0.95rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.22s ease;
  text-align: center;
  letter-spacing: 0.01em;
}
.vk-mode-btn:hover {
  color: var(--vk-text-mid);
  background: rgba(255, 255, 255, 0.04);
}
.vk-mode-btn.active {
  background: linear-gradient(135deg, #1a2644, #1d2a4a);
  color: var(--vk-accent);
  border-color: rgba(91, 140, 247, 0.3);
  box-shadow: 0 2px 12px rgba(91, 140, 247, 0.15), inset 0 1px 0 rgba(255,255,255,0.06);
  font-weight: 700;
}

/* ──────────────────────────────────────────────────
   Buttons
────────────────────────────────────────────────── */
.vectorizer-app .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border: none;
  cursor: pointer;
  border-radius: var(--vk-radius-sm);
  padding: 11px 22px;
  font-size: 0.95rem;
  font-family: inherit;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.18s ease;
  letter-spacing: 0.01em;
  white-space: nowrap;
}
.vectorizer-app .btn-primary {
  background: linear-gradient(135deg, var(--vk-accent), var(--vk-accent-2));
  color: #fff;
  box-shadow: 0 4px 16px rgba(91, 140, 247, 0.35);
}
.vectorizer-app .btn-primary:hover {
  filter: brightness(1.12);
  box-shadow: 0 6px 24px rgba(91, 140, 247, 0.5);
  transform: translateY(-1px);
}
.vectorizer-app .btn-primary:active { transform: translateY(0); }
.vectorizer-app .btn-secondary {
  background: var(--vk-card-alt);
  color: var(--vk-text-mid);
  border: 1px solid var(--vk-border);
}
.vectorizer-app .btn-secondary:hover {
  border-color: var(--vk-border-h);
  color: var(--vk-text);
  background: rgba(91, 140, 247, 0.08);
  transform: translateY(-1px);
}
.vectorizer-app .btn-ghost {
  background: transparent;
  color: var(--vk-text-dim);
  border: 1px solid var(--vk-border);
}
.vectorizer-app .btn-ghost:hover {
  color: var(--vk-text);
  border-color: var(--vk-border-h);
}

/* ──────────────────────────────────────────────────
   Dropzone
────────────────────────────────────────────────── */
.vectorizer-app .dropzone {
  border: 2px dashed rgba(91, 140, 247, 0.25);
  border-radius: var(--vk-radius);
  padding: 64px 24px;
  text-align: center;
  cursor: pointer;
  transition: all 0.22s ease;
  background: linear-gradient(135deg, var(--vk-card) 0%, #0f1830 100%);
}
.vectorizer-app .dropzone:hover,
.vectorizer-app .dropzone.dragover,
.vectorizer-app .dropzone:focus-visible {
  border-color: var(--vk-accent);
  background: linear-gradient(135deg, #111e3a 0%, #0f1b35 100%);
  box-shadow: inset 0 0 0 1px rgba(91, 140, 247, 0.15);
}
.vectorizer-app .dropzone-icon {
  font-size: 3rem;
  margin-bottom: 12px;
  filter: drop-shadow(0 0 16px rgba(91, 140, 247, 0.3));
}
.vectorizer-app .dropzone p strong { color: var(--vk-text); font-size: 1.05rem; }
.vectorizer-app .dropzone-hint {
  color: var(--vk-text-dim);
  font-size: 0.88rem;
  margin-top: 8px;
}

/* ──────────────────────────────────────────────────
   Workspace & Previews
────────────────────────────────────────────────── */
.vectorizer-app .workspace {
  margin-top: 28px;
  display: grid;
  gap: 20px;
}
.vectorizer-app .controls {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  align-items: flex-end;
}
.vectorizer-app .control {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 180px;
}
.vectorizer-app .control label {
  font-size: 0.88rem;
  color: var(--vk-text-mid);
  font-weight: 500;
}
.vectorizer-app .control input[type="range"] {
  accent-color: var(--vk-accent);
  height: 4px;
}
.vectorizer-app .control-check { flex-direction: row; align-items: center; }
.vectorizer-app .control-check label { color: var(--vk-text); font-size: 0.9rem; }

.vectorizer-app .previews {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.vectorizer-app .preview-box h3 {
  font-size: 0.88rem;
  color: var(--vk-text-dim);
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
}

/* Checker Background — Transparent Pattern */
.vectorizer-app .checker {
  border-radius: var(--vk-radius-sm);
  overflow: hidden;
  min-height: 240px;
  max-height: 440px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: #1a2236;
  background-image:
    linear-gradient(45deg, #252e46 25%, transparent 25%, transparent 75%, #252e46 75%),
    linear-gradient(45deg, #252e46 25%, transparent 25%, transparent 75%, #252e46 75%);
  background-size: 22px 22px;
  background-position: 0 0, 11px 11px;
  transition: background-color 0.2s;
  contain: layout paint;
  transform: translateZ(0);
  backface-visibility: hidden;
}
.vectorizer-app .checker img,
.vectorizer-app .checker svg {
  max-width: 100%;
  max-height: 420px;
  display: block;
  backface-visibility: hidden;
}

.vectorizer-app .meta {
  color: var(--vk-text-dim);
  font-size: 0.82rem;
  margin-top: 10px;
  font-family: 'SF Mono', 'Fira Code', monospace;
}
.vectorizer-app .processing {
  color: var(--vk-text-dim);
  padding: 36px;
  font-size: 0.9rem;
}

/* ──────────────────────────────────────────────────
   Color Palette
────────────────────────────────────────────────── */
.vectorizer-app .palette-box h3 {
  font-size: 0.88rem;
  color: var(--vk-text-dim);
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
}
.vectorizer-app .palette {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}
.vectorizer-app .swatch {
  width: 88px;
  border-radius: 10px;
  overflow: hidden;
  cursor: pointer;
  border: 1px solid var(--vk-border);
  text-align: center;
  background: var(--vk-card-alt);
  transition: all 0.18s;
}
.vectorizer-app .swatch:hover {
  transform: translateY(-3px);
  border-color: var(--vk-border-h);
  box-shadow: 0 6px 18px rgba(0,0,0,0.35);
}
.vectorizer-app .swatch-color { height: 54px; display: block; cursor: pointer; }
.vectorizer-app .swatch-input { opacity: 0; width: 100%; height: 100%; cursor: pointer; border: 0; padding: 0; }
.vectorizer-app .swatch-hex {
  font-size: 0.75rem;
  padding: 6px 0;
  direction: ltr;
  color: var(--vk-text-dim);
  background: none;
  border: 0;
  width: 100%;
  cursor: pointer;
  font-family: 'SF Mono', 'Fira Code', monospace;
  transition: color 0.15s;
}
.vectorizer-app .swatch-hex:hover { color: var(--vk-text); }

/* ──────────────────────────────────────────────────
   Presets
────────────────────────────────────────────────── */
.vectorizer-app .presets {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}
.vectorizer-app .preset-btn {
  padding: 8px 18px;
  border-radius: 30px;
  border: 1px solid var(--vk-border);
  background: var(--vk-card-alt);
  color: var(--vk-text-dim);
  cursor: pointer;
  font-family: inherit;
  font-size: 0.88rem;
  font-weight: 600;
  transition: all 0.18s;
}
.vectorizer-app .preset-btn:hover {
  border-color: var(--vk-border-h);
  color: var(--vk-text);
}
.vectorizer-app .preset-btn.active {
  background: linear-gradient(135deg, var(--vk-accent), var(--vk-accent-2));
  color: #fff;
  border-color: transparent;
  box-shadow: 0 4px 14px rgba(91, 140, 247, 0.35);
}
.vectorizer-app .btn-ocr {
  background: rgba(45, 212, 160, 0.1);
  color: var(--vk-success);
  border-color: rgba(45, 212, 160, 0.25);
}
.vectorizer-app .btn-ocr:hover {
  background: rgba(45, 212, 160, 0.2);
  border-color: var(--vk-success);
}

.vectorizer-app .hint {
  color: var(--vk-text-dim);
  font-size: 0.84rem;
  line-height: 1.55;
}

/* ──────────────────────────────────────────────────
   Preview Background Control
────────────────────────────────────────────────── */
.vk-bg-toolbar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 20px !important;
  margin-bottom: 8px;
  flex-wrap: wrap;
}
.vk-bg-label {
  color: var(--vk-text-mid);
  font-size: 0.88rem;
  font-weight: 600;
  white-space: nowrap;
}
.vk-bg-btns {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
}
.vk-bg-btn {
  padding: 6px 14px;
  border-radius: 8px;
  border: 1px solid var(--vk-border);
  background: var(--vk-card-alt);
  color: var(--vk-text-dim);
  font-size: 0.85rem;
  font-family: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.18s;
}
.vk-bg-btn:hover {
  border-color: var(--vk-border-h);
  color: var(--vk-text);
}
.vk-bg-btn.active {
  background: rgba(91, 140, 247, 0.15);
  border-color: var(--vk-accent);
  color: var(--vk-accent);
}
.vk-bg-custom-label {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 5px 12px;
  border-radius: 8px;
  border: 1px solid var(--vk-border);
  background: var(--vk-card-alt);
  color: var(--vk-text-dim);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.18s;
}
.vk-bg-custom-label:hover {
  border-color: var(--vk-border-h);
  color: var(--vk-text);
}
.vk-bg-custom-label input[type="color"] {
  width: 28px;
  height: 22px;
  border: 1px solid var(--vk-border);
  border-radius: 4px;
  background: transparent;
  cursor: pointer;
  padding: 1px;
}

/* ──────────────────────────────────────────────────
   Download Bar
────────────────────────────────────────────────── */
.vectorizer-app .downloads {
  background: linear-gradient(135deg, #111829 0%, #0f1630 100%);
}
.vectorizer-app .downloads h3 {
  font-size: 0.88rem;
  color: var(--vk-text-dim);
  margin-bottom: 14px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
}
.vectorizer-app .download-btns {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 14px 0;
}

/* ──────────────────────────────────────────────────
   Toast
────────────────────────────────────────────────── */
.vk-toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, #1a2a50, #1e3060);
  color: var(--vk-text);
  border: 1px solid rgba(91, 140, 247, 0.35);
  font-weight: 600;
  font-size: 0.9rem;
  padding: 12px 28px;
  border-radius: 40px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s, transform 0.25s;
  z-index: 9999;
  white-space: nowrap;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(8px);
}
.vk-toast.show {
  opacity: 1;
}

/* ──────────────────────────────────────────────────
   Overlay (Processing)
────────────────────────────────────────────────── */
.vk-overlay {
  position: fixed;
  inset: 0;
  z-index: 8000;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(6, 10, 22, 0.78);
  backdrop-filter: blur(4px);
}
.vk-overlay.show { display: flex; }
.vk-overlay-logo {
  width: 110px;
  max-width: 40vw;
  height: auto;
  will-change: opacity;
  animation: sederPulse 1.4s ease-in-out infinite;
}
.vk-overlay-spinner {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 4px solid rgba(255, 255, 255, 0.15);
  border-top-color: var(--vk-success);
  will-change: transform;
  animation: vkSpin 0.9s linear infinite;
}
@keyframes sederPulse {
  0%, 100% { opacity: 0.2; }
  50% { opacity: 1; }
}
@keyframes vkSpin {
  to { transform: rotate(360deg); }
}

/* ──────────────────────────────────────────────────
   Zoom Toolbar
────────────────────────────────────────────────── */
.vk-zoom-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 12px;
  padding: 10px 16px;
  background: var(--vk-card-alt);
  border: 1px solid var(--vk-border);
  border-radius: var(--vk-radius-sm);
}
.vk-zoom-btn-group {
  display: flex;
  align-items: center;
  gap: 6px;
}
.vk-zoom-btn {
  padding: 6px 12px;
  background: var(--vk-card);
  border: 1px solid var(--vk-border);
  border-radius: 6px;
  color: var(--vk-text-mid);
  font-size: 0.84rem;
  font-family: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s;
}
.vk-zoom-btn:hover {
  border-color: var(--vk-border-h);
  color: var(--vk-text);
}
.vk-zoom-level {
  font-family: 'SF Mono', 'Fira Code', monospace;
  font-weight: 700;
  color: var(--vk-accent);
  min-width: 52px;
  text-align: center;
  font-size: 0.9rem;
}
.vk-zoom-toolbar .hint {
  font-size: 0.82rem;
}

/* ──────────────────────────────────────────────────
   Builder Mode Layout & Controls
────────────────────────────────────────────────── */
.builder-container { margin-top: 10px; }
.builder-layout {
  display: grid;
  grid-template-columns: 420px 1fr;
  gap: 24px;
  align-items: start;
}
.builder-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--vk-border);
  color: var(--vk-text);
  letter-spacing: 0.01em;
}
.builder-controls {
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: 22px;
  overflow: hidden;
  box-sizing: border-box;
}

.control-group { display: flex; flex-direction: column; gap: 8px; width: 100%; box-sizing: border-box; }
.control-group > label {
  font-size: 0.85rem;
  color: var(--vk-text-mid);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.control-group > label strong { color: var(--vk-text-mid); font-weight: 600; }
.control-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 14px;
  width: 100%;
  box-sizing: border-box;
}

.control {
  display: flex;
  flex-direction: column;
  width: 100%;
  min-width: 0;
  box-sizing: border-box;
}
.control > label {
  font-size: 0.8rem;
  color: var(--vk-text-dim);
  font-weight: 600;
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Form Inputs */
.form-input,
.form-select {
  width: 100%;
  box-sizing: border-box;
  padding: 11px 14px;
  background: var(--vk-bg-mid);
  border: 1px solid var(--vk-border);
  border-radius: var(--vk-radius-sm);
  color: var(--vk-text) !important;
  font-size: 0.93rem;
  font-family: inherit;
  transition: all 0.18s;
  -webkit-appearance: none;
}
.form-input:focus,
.form-select:focus {
  outline: none;
  border-color: var(--vk-accent);
  box-shadow: var(--vk-glow);
}

.color-picker-row {
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
}
.color-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.8rem;
  color: var(--vk-text-dim);
  font-weight: 600;
}
.color-item input[type="color"] {
  width: 52px;
  height: 38px;
  border: 1px solid var(--vk-border);
  border-radius: 8px;
  background: var(--vk-card-alt);
  cursor: pointer;
  padding: 3px;
  transition: border-color 0.15s;
}
.color-item input[type="color"]:hover { border-color: var(--vk-border-h); }

/* Stroke & Sub-Badge Controls Container */
.vk-stroke-badge-box {
  background: rgba(17, 24, 41, 0.6);
  border: 1px solid var(--vk-border);
  border-radius: 12px;
  padding: 14px;
  gap: 12px;
  box-sizing: border-box;
}
.vk-check-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
  box-sizing: border-box;
}
.vk-check-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  color: var(--vk-text-mid);
  font-weight: 600;
  cursor: pointer;
  user-select: none;
  flex: 1;
  min-width: 0;
}
.vk-check-label span {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.vk-color-pick-sm {
  width: 44px;
  height: 34px;
  flex-shrink: 0;
  border: 1px solid var(--vk-border);
  border-radius: 8px;
  background: var(--vk-bg-mid);
  cursor: pointer;
  padding: 2px;
}

/* Builder Preview Box (Sticky Live Preview) */
.builder-preview-box {
  position: sticky;
  top: 24px;
  align-self: start;
  z-index: 10;
  box-sizing: border-box;
  contain: layout paint;
  transform: translateZ(0);
  backface-visibility: hidden;
}
.builder-preview-box h3 {
  font-size: 0.88rem;
  color: var(--vk-text-dim);
  margin-bottom: 14px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
}

/* Custom Studio Range Inputs */
.control input[type="range"] {
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  margin-top: 6px;
  height: 6px;
  background: #1a2744;
  border-radius: 4px;
  outline: none;
  accent-color: var(--vk-accent);
  cursor: pointer;
  display: block;
}

/* ──────────────────────────────────────────────────
   Modal Overlay
────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(5, 10, 25, 0.88);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 7000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}
.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}
body.modal-open { overflow: hidden; }
.modal-overlay .modal {
  background: #131d35 !important;
  border: 1px solid rgba(91, 140, 247, 0.25) !important;
  border-radius: 20px;
  padding: 28px;
  max-width: 500px;
  width: 92%;
  color: var(--vk-text) !important;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.65);
}
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}
.modal-overlay h3 { color: var(--vk-text) !important; font-size: 1.1rem; margin: 0; }
.modal-overlay label { color: var(--vk-text-mid) !important; }
.modal-overlay span { color: var(--vk-text) !important; }

.modal-textarea {
  width: 100%;
  padding: 12px 14px;
  border-radius: 10px;
  background: var(--vk-bg-mid) !important;
  border: 1px solid var(--vk-border) !important;
  color: var(--vk-text) !important;
  font-size: 0.93rem;
  font-family: inherit;
  resize: vertical;
  min-height: 80px;
  transition: border-color 0.18s;
}
.modal-textarea:focus {
  outline: none;
  border-color: var(--vk-accent) !important;
}

/* ──────────────────────────────────────────────────
   Form Inputs Global Reset (High Contrast)
────────────────────────────────────────────────── */
.vectorizer-app ::placeholder,
.form-input::placeholder,
.modal-textarea::placeholder {
  color: #4a607a !important;
  opacity: 1 !important;
}

.vectorizer-app input[type="text"],
.vectorizer-app textarea,
.vectorizer-app select {
  background: var(--vk-bg-mid) !important;
  color: var(--vk-text) !important;
  border: 1px solid var(--vk-border) !important;
}
.vectorizer-app input[type="text"]:focus,
.vectorizer-app textarea:focus,
.vectorizer-app select:focus {
  border-color: var(--vk-accent) !important;
  box-shadow: var(--vk-glow) !important;
}

/* Optgroup & Option Text */
.vectorizer-app select option,
.vectorizer-app select optgroup {
  background: #111829;
  color: var(--vk-text);
}

/* ──────────────────────────────────────────────────
   Font Category Badges & Visual Cards Strip
────────────────────────────────────────────────── */
.vk-font-categories {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}
.vk-font-cat-btn {
  padding: 5px 12px;
  border-radius: 20px;
  background: var(--vk-bg-mid);
  border: 1px solid var(--vk-border);
  color: var(--vk-text-dim);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.18s ease;
}
.vk-font-cat-btn:hover {
  border-color: var(--vk-border-h);
  color: var(--vk-text);
}
.vk-font-cat-btn.active {
  background: var(--vk-accent);
  border-color: var(--vk-accent);
  color: #ffffff;
  box-shadow: 0 2px 10px rgba(37, 99, 235, 0.3);
}

.vk-font-cards-strip {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding: 8px 4px 12px;
  scroll-behavior: smooth;
}
.vk-font-cards-strip::-webkit-scrollbar {
  height: 6px;
}
.vk-font-cards-strip::-webkit-scrollbar-thumb {
  background: var(--vk-border);
  border-radius: 3px;
}
.vk-font-card {
  flex: 0 0 140px;
  padding: 12px 10px;
  background: var(--vk-bg-mid);
  border: 1px solid var(--vk-border);
  border-radius: 12px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s ease;
  user-select: none;
}
.vk-font-card:hover {
  border-color: var(--vk-border-h);
  transform: translateY(-2px);
}
.vk-font-card.active {
  border-color: var(--vk-accent);
  background: rgba(37, 99, 235, 0.1);
  box-shadow: 0 0 0 2px var(--vk-accent);
}
.vk-font-card-sample {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--vk-text);
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.vk-font-card-name {
  font-size: 0.72rem;
  color: var(--vk-text-dim);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ──────────────────────────────────────────────────
   Geometry & Layout Controls
────────────────────────────────────────────────── */
.vk-layout-mode-btns,
.vk-case-mode-btns {
  display: flex;
  gap: 8px;
  margin-top: 6px;
  width: 100%;
}
.vk-layout-mode-btns .btn,
.vk-case-btn {
  flex: 1;
  text-align: center;
  padding: 8px 12px;
  border-radius: 8px;
  background: var(--vk-bg-mid);
  border: 1px solid var(--vk-border);
  color: var(--vk-text-dim);
  font-size: 0.8rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.15s ease;
}
.vk-case-btn:hover,
.vk-layout-mode-btns .btn:hover {
  border-color: var(--vk-border-h);
  color: var(--vk-text);
}
.vk-case-btn.active,
.vk-layout-mode-btns .btn.active {
  background: var(--vk-accent);
  border-color: var(--vk-accent);
  color: #ffffff;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.25);
}

/* ──────────────────────────────────────────────────
   Color & Gradient Engine
────────────────────────────────────────────────── */
.vk-color-mode-tabs {
  display: flex;
  gap: 6px;
  margin-bottom: 12px;
}
.vk-color-mode-btn {
  flex: 1;
  padding: 8px 12px;
  border-radius: 8px;
  background: var(--vk-bg-mid);
  border: 1px solid var(--vk-border);
  color: var(--vk-text-dim);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.18s ease;
}
.vk-color-mode-btn:hover {
  border-color: var(--vk-border-h);
  color: var(--vk-text);
}
.vk-color-mode-btn.active {
  background: var(--vk-card-alt);
  border-color: var(--vk-accent);
  color: var(--vk-accent);
  font-weight: 700;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.vk-gradient-swatches {
  display: flex;
  gap: 10px;
  margin-bottom: 12px;
}
.vk-grad-btn {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.18s, border-color 0.18s, box-shadow 0.18s;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}
.vk-grad-btn:hover {
  transform: scale(1.12);
  border-color: var(--vk-text);
}
.vk-grad-btn.active {
  transform: scale(1.15);
  border-color: var(--vk-accent);
  box-shadow: 0 0 0 3px var(--vk-glow);
}

/* Section spacing utility */
.vectorizer-app .section-gap { margin-top: 20px; }

/* ──────────────────────────────────────────────────
   Deconstruction & Composition Styles
────────────────────────────────────────────────── */
.deconstruct-card {
  border-left: 4px solid var(--vk-accent);
}
.vk-merge-preset {
  transition: all 0.18s ease;
}
.vk-merge-preset.active {
  background: var(--vk-accent);
  color: #ffffff;
  border-color: var(--vk-accent);
}
.control-group input[type="file"] {
  padding: 8px;
  background: var(--vk-bg-mid);
  border: 1px dashed var(--vk-border);
  border-radius: var(--vk-radius-sm);
  color: var(--vk-text);
  font-size: 0.85rem;
  width: 100%;
}
.control-group input[type="file"]:hover {
  border-color: var(--vk-accent);
}

/* ──────────────────────────────────────────────────
   Responsive
────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .builder-layout { grid-template-columns: 1fr; }
  .control-row { grid-template-columns: 1fr; }
  .vk-header { padding: 18px 20px; }
  .vk-header h1 { font-size: 1.3rem; }
}
@media (max-width: 700px) {
  .vectorizer-app { padding: 20px 14px 60px; }
  .vectorizer-app .previews { grid-template-columns: 1fr; }
  .vk-mode-switcher { flex-direction: column; }
  .vk-bg-toolbar { flex-direction: column; align-items: flex-start; }
  .vectorizer-app .download-btns { gap: 8px; }
  .vectorizer-app .btn { font-size: 0.87rem; padding: 10px 16px; }
}

@media (prefers-reduced-motion: reduce) {
  .vectorizer-app *,
  .vectorizer-app *::before,
  .vectorizer-app *::after,
  .vectorizer-navbar *,
  .vectorizer-footer *,
  .modal-overlay,
  .modal-overlay .modal,
  .vk-toast,
  .vk-skip-link {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}