/* ========================================
   Quon — App-like Light Theme
   Inspired by Quon Android (Material 3)
   ======================================== */

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

:root {
  --bg: #F5F9F7;
  --surface: #FFFFFF;
  --surface-dim: #F0F4F2;
  --surface-hover: #E6F8EF;
  --primary: #1AAD6C;
  --primary-dark: #15995F;
  --primary-light: #D7F5E7;
  --primary-ghost: rgba(26, 173, 108, 0.08);
  --text: #2D3B33;
  --text-secondary: #5A6F62;
  --text-muted: #9BB5A5;
  --border: #D4DDD8;
  --border-light: #E8F0EB;
  --danger: #CC5555;
  --danger-light: #FDEAEA;
  --radius-xs: 8px;
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 24px;
  --shadow-xs: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-sm: 0 1px 4px rgba(0,0,0,0.07);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.1);
}

body {
  font-family: "Sora", "SUIT Variable", "Pretendard", "Noto Sans KR", "Segoe UI", sans-serif;
  color: var(--text);
  line-height: 1.55;
  min-height: 100vh;
  background: var(--bg);
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -48px;
  z-index: 5000;
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.8rem;
  background: var(--primary);
  color: #fff;
  font-weight: 700;
  text-decoration: none;
}
.skip-link:focus { top: 1rem; }


/* ===== APP SHELL ===== */

.app-shell {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 1rem;
}


/* ===== APP BAR ===== */

.app-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border-light);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--text);
}

.title-logo {
  width: auto;
  height: 36px;
  border-radius: 8px;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand-name {
  font-weight: 800;
  font-size: 1.15rem;
  color: var(--primary);
  letter-spacing: -0.02em;
}

.brand-tagline {
  font-size: 0.68rem;
  color: var(--text-muted);
  font-weight: 400;
}

.app-bar-end {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.app-bar-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  background: var(--surface);
  color: var(--text-secondary);
  padding: 0.4rem 0.7rem;
  font-size: 0.78rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
}
.app-bar-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-ghost);
}

.app-bar-link {
  font-size: 0.78rem;
  color: var(--text-muted);
  text-decoration: none;
  padding: 0.4rem 0.5rem;
  border-radius: var(--radius-xs);
  transition: color 0.15s ease;
}
.app-bar-link:hover { color: var(--primary); }

.language-switcher {
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  background: var(--surface);
  color: var(--text);
  font-size: 0.8rem;
  padding: 0.4rem 0.5rem;
  cursor: pointer;
}


/* ===== APP BODY (Two-Column) ===== */

.app-body {
  display: grid;
  grid-template-columns: minmax(340px, 1fr) 380px;
  gap: 1.5rem;
  padding: 1rem 0;
  align-items: start;
}

.app-content {
  min-width: 0;
}

.app-preview {
  position: sticky;
  top: 1rem;
}


/* ===== TAB BAR ===== */

.tab-bar {
  display: flex;
  gap: 0.25rem;
  padding: 0.25rem;
  background: var(--surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xs);
  margin-bottom: 1rem;
}

.tab-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  border: none;
  background: transparent;
  color: var(--text-muted);
  padding: 0.65rem 0.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: inherit;
}

.tab-btn svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.tab-btn:hover {
  color: var(--text-secondary);
  background: var(--surface-dim);
}

.tab-btn.active {
  color: var(--primary);
  background: var(--primary-ghost);
}

.tab-btn.active svg { stroke: var(--primary); }


/* ===== TAB PANELS ===== */

.tab-panel {
  display: none;
  animation: panelFade 0.25s ease;
}

.tab-panel.active {
  display: block;
}

@keyframes panelFade {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}


/* ===== PANEL SECTIONS (Cards) ===== */

.panel-section {
  background: var(--surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 1.2rem;
  margin-bottom: 0.75rem;
  box-shadow: var(--shadow-sm);
}

.panel-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.85rem;
  letter-spacing: -0.01em;
}

.panel-title-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.85rem;
}
.panel-title-row .panel-title { margin-bottom: 0; }

.sub-title {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}


/* ===== TYPE SELECTOR ===== */

.type-selector {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.45rem;
}

.type-btn {
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text-secondary);
  padding: 0.6rem 0.3rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.2rem;
  cursor: pointer;
  transition: all 0.18s ease;
  font-size: 0.78rem;
  font-weight: 500;
  font-family: inherit;
}

.type-btn .icon {
  font-size: 1.3rem;
}

.type-btn:hover {
  border-color: var(--primary);
  color: var(--text);
  background: var(--primary-ghost);
}

.type-btn.active {
  border-color: var(--primary);
  color: #fff;
  background: var(--primary);
  font-weight: 700;
  box-shadow: 0 2px 8px rgba(26, 173, 108, 0.25);
}


/* ===== FORMS ===== */

.form-container { display: none; }
.form-container.active { display: block; }

.form-row,
.color-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.6rem;
}

.form-group {
  margin-bottom: 0.75rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.3rem;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.form-section-title {
  margin: 0.2rem 0 0.45rem;
  color: var(--primary);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
}

.required { color: var(--danger); }
.optional { color: var(--text-muted); font-size: 0.72rem; }

.input-field {
  width: 100%;
  border-radius: var(--radius-xs);
  border: 1.5px solid var(--border);
  background: var(--surface);
  color: var(--text);
  padding: 0.6rem 0.7rem;
  font-size: 0.88rem;
  font-family: inherit;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.input-field:focus,
.input-field:focus-visible {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(26, 173, 108, 0.12);
}

.input-field.is-invalid {
  border-color: var(--danger);
  box-shadow: 0 0 0 3px rgba(204, 85, 85, 0.12);
}

.field-error {
  margin-top: 0.25rem;
  color: var(--danger);
  font-size: 0.72rem;
}

textarea.input-field {
  min-height: 80px;
  resize: vertical;
}

input[type="file"].input-field {
  padding: 0.4rem 0.5rem;
}

.color-input {
  width: 100%;
  height: 42px;
  border-radius: var(--radius-xs);
  border: 1.5px solid var(--border);
  background: var(--surface);
  cursor: pointer;
}

small {
  display: block;
  margin-top: 0.25rem;
  color: var(--text-muted);
  font-size: 0.72rem;
}

.form-hint {
  color: var(--text-muted);
  font-size: 0.76rem;
  margin-top: 0.4rem;
}

.input-sm {
  font-size: 0.8rem;
  padding: 0.45rem 0.55rem;
}


/* ===== ADVANCED DETAILS / DESIGN GROUPS ===== */

.advanced-details,
.design-group {
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  background: var(--surface-dim);
  margin-bottom: 0.6rem;
  overflow: hidden;
}

.advanced-details > summary,
.design-group > summary {
  cursor: pointer;
  list-style: none;
  padding: 0.6rem 0.75rem;
  font-size: 0.84rem;
  color: var(--text);
  font-weight: 600;
  transition: color 0.15s ease;
}

.advanced-details > summary::-webkit-details-marker,
.design-group > summary::-webkit-details-marker { display: none; }

.advanced-details > summary:hover,
.design-group > summary:hover { color: var(--primary); }

.advanced-details-body,
.design-group-body {
  padding: 0.1rem 0.75rem 0.55rem;
}


/* ===== CHECKBOX ===== */

.checkbox-label {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  cursor: pointer;
  color: var(--text-secondary);
  font-size: 0.84rem;
}

.checkbox-label input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--primary);
}


/* ===== BUTTONS ===== */

.btn-generate {
  width: 100%;
  min-height: 48px;
  border: none;
  border-radius: var(--radius-sm);
  background: var(--primary);
  color: #fff;
  font-size: 0.92rem;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(26, 173, 108, 0.3);
  transition: all 0.18s ease;
}

.btn-generate:hover {
  background: var(--primary-dark);
  box-shadow: 0 6px 18px rgba(26, 173, 108, 0.38);
  transform: translateY(-1px);
}

.btn-generate.is-loading {
  opacity: 0.75;
  cursor: progress;
}

.btn-sm {
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  background: var(--surface);
  color: var(--text-secondary);
  padding: 0.35rem 0.6rem;
  font-size: 0.72rem;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: all 0.15s ease;
}
.btn-sm:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.btn-sm--danger:hover {
  border-color: var(--danger);
  color: var(--danger);
}

.btn-icon {
  width: 32px;
  height: 32px;
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  background: var(--surface);
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: all 0.15s ease;
}
.btn-icon:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.btn-tertiary {
  width: 100%;
  border: 1.5px dashed var(--border);
  border-radius: var(--radius-xs);
  background: transparent;
  color: var(--text-muted);
  padding: 0.4rem;
  font-size: 0.78rem;
  font-weight: 500;
  cursor: pointer;
  margin-top: 0.5rem;
  font-family: inherit;
}
.btn-tertiary:hover { border-color: var(--primary); color: var(--primary); }
.btn-tertiary.is-hidden { display: none; }


/* ===== PREVIEW SIDEBAR ===== */

.preview-card {
  background: var(--surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 1.2rem;
  box-shadow: var(--shadow-md);
  text-align: center;
}

.preview-stage {
  display: grid;
  place-items: center;
  min-height: 300px;
}

.preview-stage.is-empty {
  min-height: 240px;
}

.preview-canvas-shell {
  width: 100%;
  aspect-ratio: 1 / 1;
  max-width: 340px;
  display: grid;
  place-items: center;
  padding: 1rem;
  border-radius: var(--radius-lg);
  background: var(--surface-dim);
  border: 2px solid var(--border-light);
  transition: border-color 0.3s ease;
}

#qr-code-container {
  width: 100%;
  max-width: 300px;
  min-height: 260px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-md);
}

#qr-code-container.is-empty { min-height: 200px; }

#qr-code-container canvas,
#qr-code-container svg {
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-md);
  transition: transform 0.2s ease;
}

.empty-state {
  color: var(--text-muted);
  text-align: center;
}

.empty-state .icon {
  font-size: 2rem;
  margin-bottom: 0.3rem;
}

.preview-status {
  color: var(--text-muted);
  font-size: 0.78rem;
  margin: 0.6rem 0;
}

.preview-zoom-controls {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  margin-bottom: 0.6rem;
}

#preview-zoom-level {
  min-width: 44px;
  text-align: center;
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 500;
}


/* ===== EXPORT BUTTONS ===== */

.export-actions {
  display: grid;
  gap: 0.5rem;
}

.btn-export {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  min-height: 48px;
  border: none;
  border-radius: var(--radius-sm);
  background: var(--primary);
  color: #fff;
  font-size: 0.88rem;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(26, 173, 108, 0.2);
  transition: all 0.18s ease;
}
.btn-export:hover:not(:disabled) {
  background: var(--primary-dark);
  transform: translateY(-1px);
}
.btn-export:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn-export--outline {
  background: var(--surface);
  color: var(--primary);
  border: 1.5px solid var(--primary);
  box-shadow: none;
}
.btn-export--outline:hover:not(:disabled) {
  background: var(--primary-ghost);
}

.preview-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
}


/* ===== PRESETS ===== */

.preset-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.4rem;
  margin-bottom: 0.7rem;
}

.preset-btn {
  border: 1.5px solid var(--border);
  border-radius: var(--radius-xs);
  background: var(--surface);
  color: var(--text-secondary);
  min-height: 36px;
  padding: 0.4rem 0.45rem;
  font-size: 0.72rem;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: all 0.15s ease;
}
.preset-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}
.preset-btn.is-active {
  border-color: var(--primary);
  color: #fff;
  background: var(--primary);
}

.preset-market {
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  background: var(--surface-dim);
  padding: 0.65rem;
  margin-bottom: 0.65rem;
}
.preset-market h3 { font-size: 0.82rem; margin-bottom: 0.1rem; }
.preset-market p { color: var(--text-muted); font-size: 0.72rem; margin-bottom: 0.4rem; }

.preset-market-toolbar {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.3rem;
  margin-bottom: 0.4rem;
}

.select-sm {
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  background: var(--surface);
  color: var(--text);
  padding: 0.35rem 0.4rem;
  font-size: 0.72rem;
  font-family: inherit;
}

.preset-market-grid {
  display: grid;
  gap: 0.35rem;
}

.preset-market-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  background: var(--surface);
  color: var(--text);
  text-align: left;
  padding: 0.5rem;
  cursor: pointer;
  display: grid;
  gap: 0.12rem;
  font-family: inherit;
  transition: all 0.15s ease;
}
.preset-market-item:hover {
  border-color: var(--primary);
  background: var(--primary-ghost);
}

.preset-market-item strong { font-size: 0.75rem; }
.preset-market-item span { font-size: 0.68rem; color: var(--text-muted); }

.preset-market-thumb {
  width: 100%;
  height: 32px;
  border-radius: 6px;
  border: 1px solid var(--border-light);
}
.preset-thumb-cafe { background: linear-gradient(135deg, #8B6B4A, #D4A574); }
.preset-thumb-retail { background: linear-gradient(135deg, #2D5A8E, #7AB4E8); }
.preset-thumb-portfolio { background: linear-gradient(135deg, #1A4050, #68B8D7); }

.preset-badge {
  display: inline-flex;
  width: fit-content;
  border: 1px solid rgba(26, 173, 108, 0.3);
  border-radius: 999px;
  padding: 0.08rem 0.3rem;
  font-style: normal;
  font-size: 0.6rem;
  color: var(--primary);
  background: var(--primary-ghost);
}

.custom-preset-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.4rem;
  margin-bottom: 0.65rem;
}

.custom-preset-item {
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xs);
  padding: 0.5rem;
  background: var(--surface-dim);
}
.custom-preset-item h3 { font-size: 0.72rem; margin-bottom: 0.3rem; color: var(--text-secondary); }

.custom-preset-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.25rem;
}

.custom-preset-btn {
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
  color: var(--text-secondary);
  min-height: 30px;
  padding: 0.22rem 0.35rem;
  font-size: 0.68rem;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
}
.custom-preset-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}


/* ===== QUALITY CHECK ===== */

.quality-check {
  text-align: left;
}

.quality-score-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  color: var(--text-secondary);
  font-size: 0.78rem;
  margin-bottom: 0.25rem;
}
.quality-score-row strong { font-size: 0.95rem; color: var(--text); }

.quality-breakdown { display: grid; gap: 0.2rem; margin-bottom: 0.3rem; }

.quality-break-item {
  display: grid;
  grid-template-columns: 85px 1fr;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.68rem;
  color: var(--text-muted);
}

.quality-break-track {
  width: 100%;
  height: 6px;
  border-radius: 999px;
  background: var(--border-light);
  overflow: hidden;
}

.quality-break-fill {
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--primary), #5EDDAA);
  border-radius: 999px;
}

.quality-recommendation {
  color: var(--text-muted);
  font-size: 0.72rem;
  margin-bottom: 0.25rem;
}

.quality-list {
  list-style: none;
  display: grid;
  gap: 0.2rem;
  color: var(--text-secondary);
  font-size: 0.75rem;
}

.quality-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  margin-top: 0.4rem;
}

.quality-fix-btn {
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
  color: var(--text-secondary);
  padding: 0.3rem 0.45rem;
  font-size: 0.68rem;
  cursor: pointer;
}
.quality-fix-btn:hover { border-color: var(--primary); color: var(--primary); }

.quality-item-warning { color: #C67A00; }
.quality-item-ok { color: var(--primary); }


/* ===== HISTORY ===== */

.history-hint {
  color: var(--text-muted);
  font-size: 0.72rem;
  margin-bottom: 0.4rem;
}

.history-toolbar {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 0.3rem;
  margin-bottom: 0.5rem;
}

.history-pins {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.35rem;
  margin-bottom: 0.5rem;
}

.pin-slot {
  border: 1.5px dashed var(--border);
  border-radius: var(--radius-xs);
  background: var(--surface-dim);
  padding: 0.5rem;
  text-align: left;
  cursor: pointer;
  font-family: inherit;
  transition: all 0.15s ease;
}
.pin-slot:hover { border-color: var(--primary); }

.pin-label {
  display: block;
  color: var(--text-muted);
  font-size: 0.68rem;
  margin-bottom: 0.15rem;
}

.pin-empty,
.pin-content {
  display: block;
  color: var(--text-secondary);
  font-size: 0.78rem;
}

.history-list {
  list-style: none;
  display: grid;
  gap: 0.4rem;
}

.history-item {
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xs);
  padding: 0.55rem;
  background: var(--surface);
  transition: border-color 0.15s ease;
}
.history-item:hover { border-color: var(--primary); }

.history-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  margin-top: 0.3rem;
}

.history-item-top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.3rem;
}

.history-type {
  font-size: 0.7rem;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}

.history-time {
  font-size: 0.68rem;
  color: var(--text-muted);
}

.history-content {
  color: var(--text-secondary);
  font-size: 0.78rem;
  margin-top: 0.15rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.history-content mark {
  background: rgba(26, 173, 108, 0.15);
  color: var(--primary-dark);
  border-radius: 3px;
  padding: 0 0.12rem;
}

.history-reuse-btn,
.history-action-btn,
.history-fav-btn {
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
  color: var(--text-secondary);
  padding: 0.25rem 0.4rem;
  font-size: 0.68rem;
  cursor: pointer;
}
.history-reuse-btn:hover,
.history-action-btn:hover { border-color: var(--primary); color: var(--primary); }

.history-fav-btn.is-active {
  border-color: #E8B730;
  background: #FFF8E1;
  color: #B8860B;
}

.history-tag-select {
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
  color: var(--text);
  padding: 0.25rem 0.35rem;
  font-size: 0.68rem;
}

.history-empty {
  color: var(--text-muted);
  font-size: 0.78rem;
  text-align: center;
  padding: 1rem 0;
}


/* ===== ADS ===== */

.ad-container {
  border: 1px dashed var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface-dim);
  padding: 0.65rem;
  margin-top: 0.75rem;
}

.ad-label {
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  font-size: 0.65rem;
  margin-bottom: 0.3rem;
}

.ad-content {
  border: 1px dashed var(--border);
  border-radius: var(--radius-xs);
  min-height: 90px;
  padding: 0.3rem;
}

.ad-note { margin-top: 0.3rem; }
.ad-note small { color: var(--text-muted); font-size: 0.65rem; }


/* ===== BOTTOM AD BANNER ===== */

.ad-banner {
  border-top: 1px solid var(--border-light);
  background: var(--surface);
  padding: 0.5rem 0;
  margin-top: 0.5rem;
}


/* ===== MOBILE ACTION BAR ===== */

.mobile-action-bar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  display: none;
  grid-template-columns: 1.2fr 1fr 1fr 0.95fr;
  gap: 0.3rem;
  padding: 0.45rem calc(0.5rem + env(safe-area-inset-right)) calc(0.45rem + env(safe-area-inset-bottom)) calc(0.5rem + env(safe-area-inset-left));
  border-top: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  z-index: 2500;
}

.mobile-more-panel {
  position: absolute;
  right: calc(0.5rem + env(safe-area-inset-right));
  bottom: calc(100% + 0.3rem);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  box-shadow: var(--shadow-lg);
  padding: 0.3rem;
  display: grid;
  gap: 0.25rem;
}

.mobile-more-btn {
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  min-height: 36px;
  background: var(--surface);
  color: var(--text-secondary);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.25rem 0.45rem;
}

.mobile-action {
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  min-height: 40px;
  background: var(--surface);
  color: var(--text-secondary);
  font-size: 0.72rem;
  font-weight: 700;
  font-family: inherit;
}

.mobile-action.primary {
  border-color: transparent;
  background: var(--primary);
  color: #fff;
}

.mobile-action:disabled { opacity: 0.4; }


/* ===== NOTIFICATIONS ===== */

.notification {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  min-width: 200px;
  max-width: min(90vw, 340px);
  padding: 0.75rem 0.9rem;
  border-radius: var(--radius-sm);
  color: var(--text);
  border: 1px solid var(--border);
  background: var(--surface);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.2s ease, transform 0.2s ease;
  z-index: 2500;
}

.notification.show { opacity: 1; transform: translateY(0); }
.notification-success { border-color: var(--primary); }
.notification-error { border-color: var(--danger); }


/* ===== ADBLOCK MODAL ===== */

.adblock-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(6px);
  display: grid;
  place-items: center;
  z-index: 3000;
}

.adblock-modal-content {
  width: min(92vw, 420px);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--surface);
  box-shadow: var(--shadow-lg);
  padding: 1.5rem 1.3rem;
  text-align: center;
}

.adblock-icon { font-size: 2rem; margin-bottom: 0.5rem; }
.adblock-title { margin-bottom: 0.5rem; font-size: 1.2rem; }
.adblock-message,
.adblock-sub-message,
.adblock-note { color: var(--text-secondary); font-size: 0.88rem; }
.adblock-sub-message { margin-top: 0.3rem; }

.adblock-btn {
  margin-top: 1rem;
  width: 100%;
  border: none;
  border-radius: var(--radius-sm);
  padding: 0.7rem 0.9rem;
  font-weight: 700;
  color: #fff;
  background: var(--primary);
  cursor: pointer;
  font-family: inherit;
}
.adblock-btn:disabled { opacity: 0.7; cursor: not-allowed; }


/* ===== RESPONSIVE ===== */

@media (max-width: 860px) {
  .app-body {
    grid-template-columns: 1fr;
    grid-template-areas:
      "preview"
      "content";
  }

  .app-content { grid-area: content; }

  .app-preview {
    grid-area: preview;
    position: static;
  }

  .preview-card {
    display: grid;
    grid-template-columns: minmax(200px, 260px) 1fr;
    gap: 0.75rem;
    text-align: left;
    align-items: center;
  }

  .preview-stage { min-height: auto; }
  .preview-canvas-shell { max-width: 100%; }
  #qr-code-container { min-height: 180px; }
  #qr-code-container.is-empty { min-height: 140px; }

  .tab-btn span { display: none; }
  .tab-btn { padding: 0.6rem; }
}

@media (max-width: 640px) {
  .app-shell { padding: 0 0.5rem; }

  .app-bar-btn span,
  .app-bar-link { display: none; }
  .brand-tagline { display: none; }

  .type-selector { grid-template-columns: repeat(2, 1fr); }

  .form-row,
  .color-row,
  .preset-row,
  .custom-preset-grid { grid-template-columns: 1fr; }

  .history-toolbar { grid-template-columns: 1fr; }
  .history-pins { grid-template-columns: 1fr; }

  .preset-market-toolbar { grid-template-columns: 1fr; }

  .preview-card {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .preview-canvas-shell { max-width: 280px; margin: 0 auto; }

  .panel-section { padding: 0.9rem; }

  .mobile-action-bar { display: grid; }
  body { padding-bottom: 4.5rem; }
}

@media (max-width: 420px) {
  .tab-bar {
    border-radius: var(--radius-xs);
    padding: 0.15rem;
  }

  .tab-btn {
    padding: 0.5rem 0.3rem;
  }

  .tab-btn svg { width: 16px; height: 16px; }
}


/* ===== LEGACY COMPAT (hidden, for script.js) ===== */

.btn-primary { /* alias for generate button compatibility */ }
.btn-secondary { /* alias for download button compatibility */ }
.section { /* no longer used visually */ }