/* ==========================================================================
   MaskMyKid — Global Styles
   Clean, modern, fun but trustworthy. Mobile-first.
   ========================================================================== */

/* --- Reset & Base --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-primary: #6D28D9;
  --color-primary-hover: #5B21B6;
  --color-primary-light: #EDE9FE;
  --color-accent: #F59E0B;
  --color-bg: #FAFAF9;
  --color-surface: #FFFFFF;
  --color-text: #1C1917;
  --color-text-muted: #78716C;
  --color-border: #E7E5E4;
  --color-success: #16A34A;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.1);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --max-width: 960px;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

img {
  max-width: 100%;
  display: block;
}

/* --- Layout --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* --- Header --- */
.site-header {
  padding: 16px 0;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--color-text);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.82rem;
}
.header-right[hidden] {
  display: none !important;
}
.header-credits {
  color: var(--color-text-secondary);
}
.header-credits strong {
  color: var(--color-primary);
  font-weight: 700;
}
.header-buy-btn {
  background: var(--color-primary);
  color: #fff;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
}
.header-buy-btn:hover {
  opacity: 0.9;
}
.header-sign-out {
  background: none;
  border: none;
  color: var(--color-text-muted, #999);
  font-size: 0.75rem;
  cursor: pointer;
  padding: 0;
  white-space: nowrap;
}
.header-sign-out:hover {
  color: var(--color-text-secondary);
}

.logo-icon {
  font-size: 1.5rem;
}

.logo-text {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
  line-height: 1;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  padding: 12px 28px;
}
.btn-primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
.btn-primary:disabled {
  background: #A8A29E;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  padding: 10px 22px;
}
.btn-secondary:hover {
  background: var(--color-bg);
  border-color: #D6D3D1;
}

.btn-text {
  background: none;
  color: var(--color-primary);
  padding: 6px 12px;
  font-size: 0.875rem;
}
.btn-text:hover {
  text-decoration: underline;
}

.btn-lg {
  font-size: 1.1rem;
  padding: 16px 36px;
  border-radius: var(--radius-md);
}

.btn-sm {
  font-size: 0.85rem;
  padding: 8px 18px;
}

/* ==========================================================================
   Landing Page — Hero
   ========================================================================== */
.hero {
  flex: 1;
  display: flex;
  align-items: center;
  padding: 60px 0 80px;
}

.hero-content {
  text-align: center;
}

.hero-headline {
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  color: var(--color-text);
  margin-bottom: 16px;
}

.hero-sub {
  font-size: clamp(1rem, 2.5vw, 1.2rem);
  color: var(--color-text-muted);
  max-width: 560px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

.hero-features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
  margin-top: 64px;
  text-align: left;
}

.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  transition: box-shadow 0.2s ease;
}
.feature-card:hover {
  box-shadow: var(--shadow-md);
}

.feature-icon {
  font-size: 1.75rem;
  margin-bottom: 12px;
}

.feature-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* ==========================================================================
   App Page
   ========================================================================== */
.app-main {
  flex: 1;
  padding: 40px 0 80px;
}

.app-title {
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 4px;
}

.app-subtitle {
  color: var(--color-text-muted);
  margin-bottom: 40px;
}

.app-section {
  margin-bottom: 40px;
}

.section-label {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: var(--color-primary);
  color: #fff;
  font-size: 0.8rem;
  font-weight: 700;
  border-radius: 50%;
}

/* --- Upload Area --- */
.upload-area {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  text-align: center;
  transition: border-color 0.2s ease, background 0.2s ease;
  overflow: hidden;
}

.upload-area.drag-over {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
}

.upload-placeholder {
  padding: 48px 24px;
}

.upload-icon {
  font-size: 2.5rem;
  margin-bottom: 12px;
}

.upload-text {
  font-weight: 600;
  margin-bottom: 4px;
}

.upload-hint {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 12px;
}

.upload-preview {
  position: relative;
  padding: 16px;
}

.upload-preview img {
  max-height: 320px;
  margin: 0 auto;
  border-radius: var(--radius-sm);
}

.remove-btn {
  margin-top: 8px;
}

/* --- Mask Grid --- */
.mask-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 16px;
}

.mask-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 16px 12px;
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: var(--font-sans);
}

.mask-card:hover {
  border-color: #D6D3D1;
  box-shadow: var(--shadow-sm);
  transform: translateY(-2px);
}

.mask-card.selected {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
  box-shadow: 0 0 0 3px rgba(109, 40, 217, 0.15);
}

.color-selector {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 14px;
  flex-wrap: wrap;
  justify-content: center;
}

.color-selector-label {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text);
}

.color-swatches {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.color-swatch {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 3px solid transparent;
  cursor: pointer;
  position: relative;
  transition: all 0.15s ease;
  box-shadow: 0 1px 3px rgba(0,0,0,0.15);
}

.color-swatch:hover {
  transform: scale(1.1);
}

.color-swatch.selected {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px var(--color-primary), 0 2px 6px rgba(0,0,0,0.2);
}

.color-swatch-name {
  display: none;
  position: absolute;
  bottom: -18px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.65rem;
  white-space: nowrap;
  color: var(--color-text-muted);
}

.color-swatch.selected .color-swatch-name {
  display: block;
}

.mask-thumb-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.mask-thumb {
  width: 72px;
  height: 72px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg);
}

.mask-placeholder-svg {
  width: 64px;
  height: 64px;
}

.mask-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
}

/* --- Actions & Results --- */
.app-actions {
  text-align: center;
}

.progress-area {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 900;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.15);
  border-radius: 40px;
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 12px 24px;
  max-width: 90vw;
}

/* Ensure hidden attribute wins over display:flex */
.progress-area[hidden] {
  display: none !important;
}

.progress-area .progress-text {
  max-width: 240px;
  text-align: left;
  line-height: 1.4;
  font-size: 14px;
}

.spinner {
  width: 24px;
  height: 24px;
  min-width: 24px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.progress-text {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.result-area {
  margin-top: 32px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.result-preview {
  max-width: 480px;
  width: 100%;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.result-preview img {
  width: 100%;
}

.result-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  width: 100%;
  max-width: 480px;
}

.result-actions .btn-secondary {
  flex: 1;
  min-width: 120px;
}

/* --- Interactive Mask Editor --- */
.editor-area {
  margin-top: 32px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.editor-hint {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  text-align: center;
}

.editor-canvas-wrap {
  position: relative;
  max-width: 600px;
  width: 100%;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  cursor: grab;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
}

.editor-canvas-wrap:active {
  cursor: grabbing;
}

.editor-canvas-wrap canvas {
  width: 100%;
  display: block;
}

.editor-controls {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  justify-content: center;
  width: 100%;
  max-width: 500px;
}

.editor-control-group {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1;
  min-width: 180px;
}

.editor-control-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
  white-space: nowrap;
}

.editor-control-group input[type="range"] {
  flex: 1;
  accent-color: var(--color-primary);
  height: 6px;
}

.editor-control-group span {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  min-width: 36px;
  text-align: right;
}

.editor-options {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.complexity-slider {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  width: 100%;
  max-width: 320px;
}

.complexity-label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text);
}

.complexity-track {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
}

.complexity-end {
  font-size: 0.78rem;
  color: var(--color-text-muted, #6b7280);
  white-space: nowrap;
  min-width: 52px;
}

.complexity-end:last-child {
  text-align: right;
}

.complexity-track input[type="range"] {
  flex: 1;
  height: 6px;
  -webkit-appearance: none;
  appearance: none;
  background: linear-gradient(to right, var(--color-border, #e5e7eb), var(--color-primary));
  border-radius: 999px;
  outline: none;
}

.complexity-track input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--color-primary);
  border: 2px solid white;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
  cursor: pointer;
}

.complexity-track input[type="range"]::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--color-primary);
  border: 2px solid white;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
  cursor: pointer;
}

.toggle-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.95rem;
  color: var(--color-text);
  cursor: pointer;
  user-select: none;
}

.toggle-label input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--color-primary);
  cursor: pointer;
}

/* Pill toggle rows (Coverage, Eyes) */
.option-row {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  max-width: 340px;
}

.option-row-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
  min-width: 65px;
  text-align: right;
}

.pill-toggle {
  display: flex;
  border-radius: 20px;
  overflow: hidden;
  border: 2px solid var(--color-primary);
  flex: 1;
}

.pill-btn {
  flex: 1;
  padding: 6px 12px;
  font-size: 0.85rem;
  font-weight: 500;
  border: none;
  background: white;
  color: var(--color-primary);
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
  white-space: nowrap;
}

.pill-btn.active {
  background: var(--color-primary);
  color: white;
}

.pill-btn:not(.active):hover {
  background: rgba(124, 58, 237, 0.08);
}

.editor-buttons {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
}

/* --- Footer --- */
.site-footer {
  padding: 24px 0;
  text-align: center;
  border-top: 1px solid var(--color-border);
  margin-top: auto;
}

.site-footer p {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* --- Locked Mask Cards --- */
.mask-card-locked {
  position: relative;
  opacity: 0.85;
}
.mask-card-locked .mask-thumb {
  filter: grayscale(0.3);
}
.mask-lock-badge {
  position: absolute;
  top: 6px;
  right: 6px;
  background: var(--color-primary);
  color: #fff;
  font-size: 0.6rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  z-index: 2;
}
.mask-card-locked.mask-card-unlocked {
  opacity: 1;
}
.mask-card-locked.mask-card-unlocked .mask-thumb {
  filter: none;
}
.mask-card-locked.mask-card-unlocked .mask-lock-badge {
  display: none;
}

/* --- Mask Pack Modal --- */
.mask-pack-modal {
  text-align: center;
  max-width: 420px;
}
.pack-title {
  font-size: 1.3rem;
  font-weight: 800;
  margin-bottom: 6px;
}
.pack-subtitle {
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  margin-bottom: 1.25rem;
  line-height: 1.4;
}
.pack-preview {
  margin-bottom: 1.25rem;
}
.pack-features {
  list-style: none;
  padding: 0;
  margin: 0 0 1.25rem;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  text-align: left;
  max-width: 280px;
  margin-left: auto;
  margin-right: auto;
}
.pack-features li {
  padding: 4px 0;
}
.pack-features li::before {
  content: '\2713\0020';
  color: var(--color-primary);
  font-weight: 700;
}
.pack-price {
  margin-bottom: 1rem;
}
.pack-price-amount {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-primary);
}
.pack-price-label {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  margin-left: 4px;
}
.pack-buy-btn {
  width: 100%;
  margin-bottom: 0.5rem;
}

/* --- Pricing Modal --- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 16px;
}
.modal-overlay[hidden] {
  display: none !important;
}
.modal-box {
  background: var(--color-surface);
  border-radius: var(--radius-lg, 16px);
  padding: 2rem;
  max-width: 560px;
  width: 100%;
  position: relative;
  max-height: 90vh;
  overflow-y: auto;
}
.modal-close {
  position: absolute;
  top: 12px;
  right: 16px;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--color-text-muted);
  line-height: 1;
}
.pricing-title {
  font-size: 1.4rem;
  font-weight: 800;
  text-align: center;
  margin-bottom: 4px;
}
.pricing-subtitle {
  text-align: center;
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
}
.pricing-cards {
  display: flex;
  gap: 16px;
}
.pricing-card {
  flex: 1;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md, 12px);
  padding: 1.25rem;
  text-align: center;
  position: relative;
}
.pricing-card-featured {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
}
.pricing-badge {
  position: absolute;
  top: -11px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-primary);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 2px 12px;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.pricing-plan-name {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.pricing-price {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 12px;
}
.pricing-period {
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--color-text-secondary);
}
.pricing-features {
  list-style: none;
  padding: 0;
  margin: 0 0 16px;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}
.pricing-features li {
  padding: 4px 0;
}
.pricing-features li::before {
  content: '\2713\0020';
  color: var(--color-primary);
  font-weight: 700;
}
.pricing-btn {
  width: 100%;
}
.pricing-note {
  text-align: center;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: 1rem;
}

@media (max-width: 480px) {
  .pricing-cards {
    flex-direction: column;
  }
  .modal-box {
    padding: 1.5rem;
  }
}

/* --- Access Gate --- */
.access-gate {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 50vh;
}
.access-gate[hidden] {
  display: none !important;
}
.credits-bar[hidden] {
  display: none !important;
}
.user-bar[hidden] {
  display: none !important;
}
.access-gate-box {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 2.5rem 2rem;
  max-width: 420px;
  width: 100%;
  text-align: center;
}
.access-gate-box .app-title {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}
.access-gate-box .app-subtitle {
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
}
.access-input-row {
  display: flex;
  gap: 0.5rem;
  justify-content: center;
}
.access-code-input {
  font-family: var(--font-sans);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.6rem 1rem;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  outline: none;
  width: 180px;
  text-align: center;
  transition: border-color 0.2s;
}
.access-code-input:focus {
  border-color: var(--color-primary);
}
.access-error {
  color: #DC2626;
  font-size: 0.85rem;
  font-weight: 600;
  margin-top: 1rem;
}

/* --- Auth Page --- */
.auth-box {
  max-width: 440px;
  margin: 2rem auto;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 2.5rem 2rem;
  text-align: center;
}
.auth-form { margin-bottom: 0.5rem; }
.auth-label {
  display: block;
  text-align: left;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
  color: var(--color-text);
}
.auth-input {
  width: 100%;
  padding: 0.7rem 1rem;
  font-size: 1rem;
  font-family: var(--font-sans);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  outline: none;
  margin-bottom: 0.75rem;
  transition: border-color 0.2s;
  box-sizing: border-box;
}
.auth-input:focus { border-color: var(--color-primary); }
.auth-btn {
  width: 100%;
  margin-top: 0.5rem;
}
.auth-hint {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-top: 0.75rem;
}
.auth-divider {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin: 1.25rem 0;
  font-size: 0.8rem;
  color: var(--color-text-muted);
}
.auth-divider::before,
.auth-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-border);
}
.auth-toggle {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: 0.75rem;
}
.auth-error {
  color: #DC2626;
  font-size: 0.85rem;
  font-weight: 600;
  margin-top: 1rem;
  padding: 0.5rem;
  background: #FEF2F2;
  border-radius: var(--radius-sm);
}
.auth-success {
  padding: 1.5rem 1rem;
}
.auth-success-icon {
  font-size: 2.5rem;
  display: block;
  margin-bottom: 0.75rem;
}
.auth-success h2 {
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
}
.btn-link {
  background: none;
  border: none;
  color: var(--color-primary);
  font-weight: 600;
  cursor: pointer;
  font-size: inherit;
  font-family: inherit;
  padding: 0;
  text-decoration: underline;
}
.btn-link:hover { opacity: 0.8; }

/* User bar (shown when logged in on app page) */
.user-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 1rem;
  background: var(--color-primary-light);
  border-radius: var(--radius-sm);
  margin-bottom: 1.5rem;
  font-size: 0.85rem;
}
.user-bar-email {
  font-weight: 600;
  color: var(--color-primary);
}
.user-bar-credits {
  font-weight: 600;
}
.user-bar-actions {
  display: flex;
  gap: 0.75rem;
  align-items: center;
}

/* --- Credits Bar --- */
.credits-bar {
  background: var(--color-primary-light);
  border-radius: var(--radius-sm);
  padding: 0.5rem 1rem;
  margin-bottom: 1.5rem;
  display: flex;
  justify-content: center;
  align-items: center;
}
.credits-label {
  font-size: 0.85rem;
  color: var(--color-primary);
}
.credits-label strong {
  font-weight: 800;
}
.credits-bar.credits-low {
  background: #FEF3C7;
}
.credits-bar.credits-low .credits-label {
  color: #92400E;
}

/* --- Error toast --- */
.error-toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: #DC2626;
  color: #fff;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  box-shadow: var(--shadow-lg);
  z-index: 1000;
  animation: slideUp 0.3s ease;
  max-width: 90vw;
  text-align: center;
}

@keyframes slideUp {
  from { transform: translateX(-50%) translateY(20px); opacity: 0; }
  to { transform: translateX(-50%) translateY(0); opacity: 1; }
}

/* --- Upload area touch/mobile improvements --- */
.upload-area {
  -webkit-tap-highlight-color: transparent;
}

/* --- Result image pinch-to-zoom prevention --- */
.result-preview img {
  touch-action: manipulation;
}

/* --- Better range slider styling for mobile --- */
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  height: 6px;
  background: var(--color-border);
  border-radius: 3px;
  outline: none;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--color-primary);
  cursor: pointer;
  border: 2px solid #fff;
  box-shadow: 0 1px 4px rgba(0,0,0,0.2);
}

input[type="range"]::-moz-range-thumb {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--color-primary);
  cursor: pointer;
  border: 2px solid #fff;
  box-shadow: 0 1px 4px rgba(0,0,0,0.2);
}

/* ==========================================================================
   Responsive
   ========================================================================== */

/* Tablet */
@media (max-width: 768px) {
  .container {
    padding: 0 16px;
  }

  .app-title {
    font-size: 1.5rem;
  }

  .editor-canvas-wrap {
    max-width: 100%;
  }

  .result-preview {
    max-width: 100%;
  }

  .editor-controls {
    max-width: 100%;
  }

  .editor-buttons {
    width: 100%;
  }

  .editor-buttons .btn {
    flex: 1;
    min-width: 0;
  }
}

/* Mobile */
@media (max-width: 600px) {
  .hero {
    padding: 40px 0 60px;
  }

  .hero-features {
    grid-template-columns: 1fr;
    margin-top: 40px;
  }

  .mask-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
  }

  .mask-card {
    padding: 12px 8px;
  }

  .mask-thumb {
    width: 56px;
    height: 56px;
  }

  .btn-lg {
    width: 100%;
  }

  .app-main {
    padding: 24px 0 60px;
  }

  .app-subtitle {
    margin-bottom: 24px;
  }

  .app-section {
    margin-bottom: 28px;
  }

  .upload-placeholder {
    padding: 32px 16px;
  }

  .editor-hint {
    font-size: 0.82rem;
    padding: 0 8px;
  }

  .editor-controls {
    flex-direction: column;
    gap: 12px;
  }

  .editor-control-group {
    min-width: 100%;
  }

  .editor-buttons {
    flex-direction: column;
    width: 100%;
  }

  .editor-buttons .btn {
    width: 100%;
  }

  .result-preview {
    border-radius: var(--radius-sm);
  }

  .site-header {
    padding: 12px 0;
  }

  .logo-text {
    font-size: 1.1rem;
  }
}

/* Small phones */
@media (max-width: 380px) {
  .mask-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero-headline {
    font-size: 1.75rem;
  }
}

/* ===== Variant Carousel ===== */
.variant-carousel {
  margin-top: 0.75rem;
  padding: 0.75rem 0;
  animation: variantSlideIn 0.25s ease-out;
}
.variant-carousel[hidden] { display: none !important; }

@keyframes variantSlideIn {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.variant-label {
  font-size: 0.8rem;
  color: var(--color-text-secondary, #6b7280);
  margin: 0 0 0.5rem 0.25rem;
  font-weight: 600;
}

.variant-track {
  display: flex;
  gap: 0.75rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  padding: 0.25rem 0.25rem 0.5rem;
  scrollbar-width: none;
}
.variant-track::-webkit-scrollbar { display: none; }

.variant-card {
  flex: 0 0 auto;
  scroll-snap-align: center;
  width: 110px;
  cursor: pointer;
  border-radius: var(--radius-sm, 8px);
  border: 2px solid var(--color-border, #e5e7eb);
  background: var(--color-surface, #fff);
  overflow: hidden;
  transition: border-color 0.2s, transform 0.15s, box-shadow 0.2s;
  position: relative;
}
.variant-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}
.variant-card.selected {
  border-color: var(--color-primary, #6D28D9);
  box-shadow: 0 0 0 2px rgba(109, 40, 217, 0.25);
}

.variant-card-img {
  width: 100%;
  height: 80px;
  object-fit: cover;
  display: block;
}

.variant-card-label {
  font-size: 0.7rem;
  font-weight: 600;
  text-align: center;
  padding: 0.35rem 0.25rem;
  color: var(--color-text-primary, #111827);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}