:root {
  --bg: #fafafa;
  --bg-2: #f4f4f5;
  --surface: #ffffff;
  --border: #e4e4e7;
  --border-strong: #d4d4d8;
  --text: #18181b;
  --text-2: #52525b;
  --text-muted: #71717a;
  --text-faint: #a1a1aa;
  --accent: #7c3aed;
  --accent-hover: #6d28d9;
  --accent-light: #f5f3ff;
  --accent-ring: #ddd6fe;
  --danger: #dc2626;
  --radius: 10px;
  --radius-sm: 6px;
  --radius-lg: 14px;
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
  --t: 150ms cubic-bezier(0.4, 0, 0.2, 1);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

[hidden] { display: none !important; }

html, body { height: 100%; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

button { font-family: inherit; }

/* ─── App layout ─── */
.app {
  max-width: 1160px;
  margin: 0 auto;
  padding: 36px 24px 48px;
}

.header { margin-bottom: 24px; }

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: linear-gradient(135deg, #7c3aed 0%, #ec4899 100%);
  box-shadow: 0 4px 12px rgba(124, 58, 237, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
}
.finder {
  width: 22px;
  height: 22px;
  background: white;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.finder-inner {
  width: 9px;
  height: 9px;
  background: #7c3aed;
  border-radius: 2px;
}

.brand h1 {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.2;
  color: var(--text);
}

/* ─── Two-column layout ─── */
.layout {
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: 20px;
  align-items: start;
}
@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; }
  .preview { position: static !important; }
}

/* ─── Card ─── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xs);
}
.controls { overflow: hidden; }

/* ─── Tabs ─── */
.tabs {
  display: flex;
  padding: 4px;
  margin: 10px;
  background: var(--bg-2);
  border-radius: var(--radius);
  gap: 2px;
}
.tab {
  flex: 1;
  padding: 8px 14px;
  border: none;
  background: transparent;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  color: var(--text-2);
  cursor: pointer;
  transition: var(--t);
}
.tab:hover { color: var(--text); }
.tab.active {
  background: var(--surface);
  color: var(--text);
  box-shadow: var(--shadow-xs);
}

/* ─── Panels ─── */
.panel {
  padding: 12px 22px 24px;
  display: none;
  flex-direction: column;
  gap: 22px;
}
.panel.active { display: flex; }

/* ─── Fields ─── */
.field { display: flex; flex-direction: column; gap: 10px; }
.field-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.field > label,
.field-head > label {
  font-size: 11.5px;
  font-weight: 600;
  color: var(--text-2);
  letter-spacing: 0;
  text-transform: none;
}

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }

/* ─── Form inputs ─── */
input[type="text"],
input[type="email"],
input[type="tel"],
input[type="number"],
textarea,
select {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  font-family: inherit;
  font-size: 13.5px;
  transition: var(--t);
  outline: none;
}
textarea { resize: vertical; min-height: 80px; line-height: 1.5; }
input:focus, textarea:focus, select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-ring);
}
input::placeholder, textarea::placeholder {
  color: var(--text-faint);
}

select {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2371717a' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'><polyline points='6 9 12 15 18 9'/></svg>");
  background-repeat: no-repeat;
  background-position: right 10px center;
  padding-right: 30px;
  cursor: pointer;
}

/* ─── Chips (type selector) ─── */
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.chip {
  padding: 6px 13px;
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 999px;
  font-size: 12.5px;
  font-weight: 500;
  color: var(--text-2);
  cursor: pointer;
  transition: var(--t);
}
.chip:hover {
  border-color: var(--border-strong);
  color: var(--text);
}
.chip.active {
  background: var(--text);
  color: var(--surface);
  border-color: var(--text);
}

/* ─── Segmented control ─── */
.seg {
  display: inline-flex;
  background: var(--bg-2);
  border-radius: var(--radius);
  padding: 3px;
  gap: 2px;
  width: 100%;
}
.seg.micro { padding: 2px; width: auto; }
.seg-btn {
  flex: 1;
  padding: 7px 10px;
  border: none;
  background: transparent;
  border-radius: var(--radius-sm);
  font-size: 12.5px;
  font-weight: 500;
  color: var(--text-2);
  cursor: pointer;
  transition: var(--t);
  white-space: nowrap;
}
.seg.micro .seg-btn { padding: 5px 10px; font-size: 11.5px; }
.seg-btn:hover { color: var(--text); }
.seg-btn.active {
  background: var(--surface);
  color: var(--text);
  box-shadow: var(--shadow-xs);
}

/* ─── Checkbox ─── */
.check {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  color: var(--text-2);
  cursor: pointer;
  user-select: none;
}
.check input {
  appearance: none;
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  border: 1.5px solid var(--border-strong);
  border-radius: 4px;
  background: var(--surface);
  cursor: pointer;
  position: relative;
  transition: var(--t);
  flex-shrink: 0;
}
.check input:checked {
  background: var(--accent);
  border-color: var(--accent);
}
.check input:checked::after {
  content: '';
  position: absolute;
  left: 4px;
  top: 1px;
  width: 4px;
  height: 8px;
  border-right: 2px solid white;
  border-bottom: 2px solid white;
  transform: rotate(45deg);
}

/* ─── Icon grid (dot & corner styles) ─── */
.icon-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
}
.icon-grid.mini { grid-template-columns: repeat(3, 1fr); }
.icon-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 10px 6px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  transition: var(--t);
  color: var(--text-2);
}
.icon-btn svg {
  width: 26px;
  height: 26px;
  fill: currentColor;
}
.icon-grid.mini .icon-btn {
  padding: 12px 6px;
}
.icon-grid.mini .icon-btn svg {
  width: 22px;
  height: 22px;
}
.icon-btn span {
  font-size: 11px;
  font-weight: 500;
}
.icon-btn:hover {
  border-color: var(--border-strong);
  color: var(--text);
}
.icon-btn.active {
  border-color: var(--accent);
  background: var(--accent-light);
  color: var(--accent-hover);
}

/* ─── Presets ─── */
.presets {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
}
.preset {
  position: relative;
  height: 40px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: var(--t);
  overflow: hidden;
}
.preset:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}
.preset[data-preset="mono"]     { background: linear-gradient(135deg, #18181b, #52525b); }
.preset[data-preset="midnight"] { background: linear-gradient(135deg, #4338ca, #7c3aed); }
.preset[data-preset="sunset"]   { background: linear-gradient(135deg, #f97316, #ec4899); }
.preset[data-preset="ocean"]    { background: linear-gradient(135deg, #0ea5e9, #2563eb); }
.preset[data-preset="forest"]   { background: linear-gradient(135deg, #059669, #14532d); }
.preset[data-preset="candy"]    { background: linear-gradient(135deg, #fb7185, #a78bfa); }
.preset[data-preset="fire"]     { background: linear-gradient(135deg, #fbbf24, #dc2626); }
.preset[data-preset="lavender"] { background: linear-gradient(135deg, #c4b5fd, #f9a8d4); }

/* ─── Color swatches ─── */
.swatches {
  display: grid;
  grid-template-columns: repeat(10, 1fr);
  gap: 5px;
}
.swatch {
  aspect-ratio: 1;
  border: 1px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
  transition: var(--t);
  padding: 0;
  background-clip: padding-box;
}
.swatch:hover {
  transform: scale(1.1);
  z-index: 1;
  border-color: var(--border-strong);
}
.swatch.active {
  border: 2px solid var(--accent);
  box-shadow: 0 0 0 2px var(--accent-ring);
}

/* ─── Color row ─── */
.color-row {
  display: flex;
  gap: 8px;
}
input[type="color"] {
  flex: 1;
  width: 100%;
  height: 36px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 3px;
  cursor: pointer;
  outline: none;
  transition: var(--t);
}
input[type="color"]:hover { border-color: var(--border-strong); }
input[type="color"]::-webkit-color-swatch-wrapper { padding: 0; }
input[type="color"]::-webkit-color-swatch { border: none; border-radius: 5px; }
input[type="color"]::-moz-color-swatch { border: none; border-radius: 5px; }

.gradient-controls {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-top: 2px;
}

/* ─── Sliders ─── */
.slider-row {
  display: grid;
  grid-template-columns: 60px 1fr 46px;
  align-items: center;
  gap: 12px;
}
.slider-row.inline {
  grid-template-columns: 80px 1fr 36px;
}
.slider-row label, .slider-row .opt-label {
  font-size: 12px;
  color: var(--text-2);
  font-weight: 500;
}
.slider-row .val {
  font-size: 12px;
  color: var(--text);
  text-align: right;
  font-variant-numeric: tabular-nums;
}
.val.mono {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 11.5px;
}

input[type="range"] {
  appearance: none;
  -webkit-appearance: none;
  width: 100%;
  height: 4px;
  background: var(--border);
  border-radius: 999px;
  outline: none;
  cursor: pointer;
}
input[type="range"]::-webkit-slider-thumb {
  appearance: none;
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  background: var(--accent);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
  transition: transform 100ms;
}
input[type="range"]::-webkit-slider-thumb:hover { transform: scale(1.15); }
input[type="range"]::-moz-range-thumb {
  width: 16px;
  height: 16px;
  background: var(--accent);
  border-radius: 50%;
  cursor: pointer;
  border: none;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
}

/* ─── Dropzone ─── */
.dropzone {
  border: 1.5px dashed var(--border-strong);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
  cursor: pointer;
  background: var(--bg);
  transition: var(--t);
}
.dropzone:hover,
.dropzone.dragover {
  border-color: var(--accent);
  background: var(--accent-light);
}
.dz-icon {
  color: var(--text-muted);
  margin-bottom: 6px;
}
.dz-empty p {
  margin-top: 4px;
  color: var(--text);
  font-size: 13.5px;
}
.dz-empty p strong { font-weight: 600; }
.dz-empty span {
  font-size: 11.5px;
  color: var(--text-muted);
  display: block;
  margin-top: 4px;
}

.dz-filled {
  display: flex;
  align-items: center;
  gap: 14px;
  text-align: left;
}
.dz-filled img {
  width: 56px;
  height: 56px;
  object-fit: contain;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px;
  flex-shrink: 0;
}
.dz-meta {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}
.dz-meta #logoName {
  font-size: 12.5px;
  font-weight: 500;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.dz-meta button {
  align-self: flex-start;
  padding: 4px 10px;
  background: transparent;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  color: var(--text-2);
  font-size: 12px;
  cursor: pointer;
  transition: var(--t);
}
.dz-meta button:hover {
  border-color: var(--danger);
  color: var(--danger);
}

/* ─── Preview ─── */
.preview {
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  position: sticky;
  top: 20px;
}
.preview-stage {
  aspect-ratio: 1;
  background-color: var(--bg-2);
  background-image:
    linear-gradient(45deg, rgba(0,0,0,0.04) 25%, transparent 25%, transparent 75%, rgba(0,0,0,0.04) 75%),
    linear-gradient(45deg, rgba(0,0,0,0.04) 25%, transparent 25%, transparent 75%, rgba(0,0,0,0.04) 75%);
  background-size: 14px 14px;
  background-position: 0 0, 7px 7px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 18px;
  border: 1px solid var(--border);
}
#qr {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}
#qr canvas, #qr svg {
  max-width: 100% !important;
  max-height: 100% !important;
  width: auto !important;
  height: auto !important;
  border-radius: 4px;
  filter: drop-shadow(0 6px 18px rgba(0, 0, 0, 0.1));
}

/* ─── Output options ─── */
.output {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.opt-row {
  display: grid;
  grid-template-columns: 80px 1fr;
  align-items: center;
  gap: 10px;
}
.opt-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-2);
}

/* ─── Download ─── */
.download {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.filename-input {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 12.5px !important;
}
.download-actions {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 6px;
}
.format-select {
  font-size: 12.5px !important;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 16px;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: var(--radius);
  font-size: 13.5px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--t);
}
.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(124, 58, 237, 0.3);
}
.btn-primary:active { transform: translateY(0); }

/* ─── Scrollbar ─── */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: 999px;
  border: 2px solid var(--bg);
}
::-webkit-scrollbar-thumb:hover { background: var(--text-faint); }