/* ─── HOSO Design System — CSS Tokens & Components ──────── */
/* Lexend Deca · Premium SaaS Aesthetics · Zero-Persistence  */

@import url('https://fonts.googleapis.com/css2?family=Lexend+Deca:wght@300;400;500;600;700;800&display=swap');

/* ─── Design Tokens ────────────────────────────────────── */
:root {
  /* Brand */
  --brand-primary: #78bc20;
  --brand-primary-hover: #6aaa1a;
  --brand-primary-light: #e8f5d6;
  --brand-text: #15803d;
  --page-bg: #f8faf7;

  /* Slate Palette */
  --slate-900: #0f172a;
  --slate-800: #1e293b;
  --slate-700: #334155;
  --slate-600: #475569;
  --slate-500: #64748b;
  --slate-400: #94a3b8;
  --slate-300: #cbd5e1;
  --slate-200: #e2e8f0;
  --slate-100: #f1f5f9;
  --slate-50: #f8fafc;

  /* Semantic Colors */
  --color-warning: #f59e0b;
  --color-warning-bg: #fffbeb;
  --color-warning-border: #fde68a;
  --color-warning-text: #92400e;
  --color-caution: #3b82f6;
  --color-caution-bg: #eff6ff;
  --color-caution-border: #bfdbfe;
  --color-caution-text: #1e40af;
  --color-error: #ef4444;
  --color-error-bg: #fef2f2;
  --color-success: #22c55e;
  --color-success-bg: #f0fdf4;

  /* Typography */
  --font-family: 'Lexend Deca', sans-serif;
  --fs-xs: 11px;
  --fs-sm: 12px;
  --fs-base: 14px;
  --fs-md: 15px;
  --fs-lg: 16px;
  --fs-xl: 18px;
  --fs-2xl: 22px;
  --fs-3xl: 28px;

  /* Font Weights */
  --fw-light: 300;
  --fw-regular: 400;
  --fw-medium: 500;
  --fw-semibold: 600;
  --fw-bold: 700;
  --fw-extrabold: 800;

  /* Spacing */
  --sp-xs: 4px;
  --sp-sm: 8px;
  --sp-md: 12px;
  --sp-base: 16px;
  --sp-lg: 20px;
  --sp-xl: 24px;
  --sp-2xl: 32px;
  --sp-3xl: 40px;

  /* Premium Card */
  --card-radius: 20px;
  --card-border: 1px solid #edf2f7;
  --card-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
  --card-shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.06);

  /* Buttons */
  --btn-radius: 12px;
  --btn-padding: 12px 24px;
  --btn-shadow: 0 2px 8px rgba(120, 188, 32, 0.25);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);

  /* Layout */
  --container-max: 960px;
  --container-padding: 24px;

  /* Attribute Tags (SKU dimensions) */
  --tag-bg: #eef4ff;
  --tag-border: #c7d7f0;
  --tag-text: #2c4a7c;
}

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

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  font-size: var(--fs-base);
  color: var(--slate-800);
  background-color: var(--page-bg);
  line-height: 1.6;
  min-height: 100vh;
}

/* ─── Container ────────────────────────────────────────── */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--sp-xl);
}

/* ─── Header ───────────────────────────────────────────── */
.page-header {
  text-align: center;
  margin-bottom: var(--sp-2xl);
  padding: var(--sp-2xl) 0 var(--sp-lg);
}

.page-header__title {
  font-size: var(--fs-3xl);
  font-weight: var(--fw-extrabold);
  color: var(--slate-800);
  letter-spacing: -0.02em;
  margin-bottom: var(--sp-xs);
}

.page-header__title span {
  background: linear-gradient(135deg, var(--brand-primary), #4ade80);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.page-header__subtitle {
  font-size: var(--fs-base);
  color: var(--slate-500);
  font-weight: var(--fw-regular);
}

/* ─── Premium Card ─────────────────────────────────────── */
.card {
  background: white;
  border-radius: var(--card-radius);
  border: var(--card-border);
  box-shadow: var(--card-shadow);
  margin-bottom: var(--sp-xl);
  overflow: hidden;
  transition: box-shadow var(--transition-base);
}

.card:hover {
  box-shadow: var(--card-shadow-hover);
}

.card-header {
  display: flex;
  align-items: center;
  gap: var(--sp-md);
  padding: var(--sp-lg) var(--sp-xl);
  border-bottom: 1px solid var(--slate-100);
}

.card-header h3 {
  font-size: var(--fs-base);
  font-weight: var(--fw-extrabold);
  text-transform: uppercase;
  color: var(--slate-800);
  letter-spacing: 0.03em;
}

.card-body {
  padding: var(--sp-xl);
}

/* ─── Icon Wrapper ─────────────────────────────────────── */
.icon-wrapper {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.icon-wrapper--blue {
  background: #eef4ff;
  color: #3b82f6;
}

.icon-wrapper--orange {
  background: #fff7ed;
  color: #f97316;
}

.icon-wrapper--green {
  background: #f0fdf4;
  color: #22c55e;
}

.icon-wrapper .material-symbols-rounded {
  font-size: 22px;
}

/* ─── SKU Grid ─────────────────────────────────────────── */
.sku-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: var(--sp-md);
}

.sku-item {
  position: relative;
  border-radius: 14px;
  border: 2px solid var(--slate-200);
  overflow: hidden;
  cursor: pointer;
  transition: all var(--transition-base);
  background: white;
}

.sku-item:hover {
  border-color: var(--slate-300);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.sku-item.active {
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 3px var(--brand-primary-light), 0 4px 12px rgba(120, 188, 32, 0.15);
}

.sku-item__image {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  display: block;
  background: var(--slate-50);
}

.sku-item__image-placeholder {
  width: 100%;
  aspect-ratio: 3 / 4;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--slate-50);
  color: var(--slate-400);
  font-size: 32px;
}

.sku-item__info {
  padding: var(--sp-sm) var(--sp-md);
}

.sku-item__name {
  font-size: var(--fs-sm);
  font-weight: var(--fw-bold);
  color: var(--slate-800);
  margin-bottom: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sku-item__dims {
  font-size: var(--fs-xs);
  color: var(--slate-500);
  font-weight: var(--fw-medium);
}

.sku-item__color-dot {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 2px solid white;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.sku-item__color-dot--brown { background: #8B6914; }
.sku-item__color-dot--white { background: #f5f5f0; }

/* ─── Asset Status Badge ───────────────────────────────── */
.sku-item__asset-badge {
  position: absolute;
  top: 6px;
  left: 6px;
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 2px 7px;
  border-radius: 100px;
  font-size: 9px;
  font-weight: var(--fw-bold);
  letter-spacing: 0.02em;
  line-height: 1.4;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  z-index: 1;
  pointer-events: none;
  opacity: 0.92;
  transition: opacity var(--transition-fast);
}

.sku-item:hover .sku-item__asset-badge {
  opacity: 1;
}

.sku-item__asset-badge .material-symbols-rounded {
  font-size: 11px;
}

/* Ready — cả mask lẫn overlay */
.sku-item__asset-badge--ready {
  background: rgba(34, 197, 94, 0.15);
  border: 1px solid rgba(34, 197, 94, 0.3);
  color: #15803d;
}

/* Partial — có 1 trong 2 */
.sku-item__asset-badge--partial {
  background: rgba(245, 158, 11, 0.15);
  border: 1px solid rgba(245, 158, 11, 0.3);
  color: #92400e;
}

/* Missing — chưa có gì */
.sku-item__asset-badge--missing {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.2);
  color: #b91c1c;
}

/* ─── Attribute Tags (SKU Dimensions) ──────────────────── */
.attribute-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-sm);
  margin-top: var(--sp-md);
}

.attribute-tag {
  background: var(--tag-bg);
  border: 1px solid var(--tag-border);
  color: var(--tag-text);
  border-radius: 8px;
  padding: 4px 12px;
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.attribute-tag .material-symbols-rounded {
  font-size: 14px;
}

/* ─── Warning Badges ───────────────────────────────────── */
.warnings-container {
  margin-top: var(--sp-base);
  display: flex;
  flex-direction: column;
  gap: var(--sp-sm);
}

.warning-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-sm);
  border-radius: 100px;
  padding: 8px 16px;
  font-size: var(--fs-sm);
  font-weight: var(--fw-bold);
  line-height: 1.4;
}

.warning-badge .material-symbols-rounded {
  font-size: 16px;
  flex-shrink: 0;
}

.warning-badge--warning {
  background: var(--color-warning-bg);
  border: 1px solid var(--color-warning-border);
  color: var(--color-warning-text);
}

.warning-badge--caution {
  background: var(--color-caution-bg);
  border: 1px solid var(--color-caution-border);
  color: var(--color-caution-text);
}

/* ─── Form Fields ──────────────────────────────────────── */
.field-group {
  margin-bottom: var(--sp-lg);
}

.field-label {
  display: block;
  font-size: var(--fs-xs);
  font-weight: var(--fw-bold);
  color: var(--slate-400);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--sp-sm);
}

.field-input,
.field-textarea {
  width: 100%;
  padding: var(--sp-md) var(--sp-base);
  border: 1.5px solid var(--slate-200);
  border-radius: var(--btn-radius);
  font-family: var(--font-family);
  font-size: var(--fs-md);
  font-weight: var(--fw-semibold);
  color: var(--slate-800);
  background: white;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
}

.field-input:focus,
.field-textarea:focus {
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 3px var(--brand-primary-light);
}

.field-input::placeholder,
.field-textarea::placeholder {
  color: var(--slate-400);
  font-weight: var(--fw-regular);
}

.field-textarea {
  resize: vertical;
  min-height: 120px;
  line-height: 1.6;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-base);
}

/* ─── Upload Zone ──────────────────────────────────────── */
.upload-zone {
  border: 2px dashed var(--slate-200);
  border-radius: var(--btn-radius);
  padding: var(--sp-lg);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-base);
  background: var(--slate-50);
}

.upload-zone:hover {
  border-color: var(--brand-primary);
  background: var(--brand-primary-light);
}

.upload-zone.has-file {
  border-color: var(--brand-primary);
  border-style: solid;
  background: var(--brand-primary-light);
}

.upload-zone__icon {
  font-size: 28px;
  color: var(--slate-400);
  margin-bottom: var(--sp-sm);
}

.upload-zone__text {
  font-size: var(--fs-sm);
  color: var(--slate-500);
  font-weight: var(--fw-medium);
}

.upload-zone__preview {
  max-width: 100%;
  max-height: 80px;
  border-radius: 8px;
  margin-top: var(--sp-sm);
  object-fit: contain;
}

.upload-zone input[type="file"] {
  display: none;
}

/* ─── Buttons ──────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-sm);
  padding: var(--btn-padding);
  border-radius: var(--btn-radius);
  font-family: var(--font-family);
  font-size: var(--fs-base);
  font-weight: var(--fw-semibold);
  cursor: pointer;
  border: none;
  transition: all var(--transition-base);
  text-decoration: none;
}

.btn .material-symbols-rounded {
  font-size: 18px;
}

.btn-primary {
  background: var(--brand-primary);
  color: white;
  box-shadow: var(--btn-shadow);
}

.btn-primary:hover {
  background: var(--brand-primary-hover);
  box-shadow: 0 4px 14px rgba(120, 188, 32, 0.35);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-primary:disabled {
  background: var(--slate-300);
  box-shadow: none;
  cursor: not-allowed;
  transform: none;
}

.btn-secondary {
  background: white;
  color: var(--slate-600);
  border: 1.5px solid var(--slate-200);
}

.btn-secondary:hover {
  border-color: var(--slate-300);
  background: var(--slate-50);
}

.btn-lg {
  width: 100%;
  padding: 14px 24px;
  font-size: var(--fs-lg);
  border-radius: 14px;
}

.btn-hidden {
  display: none;
}

/* ─── Canvas Container ─────────────────────────────────── */
.canvas-container {
  position: relative;
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 300px;
  background: var(--slate-50);
  border-radius: 14px;
  overflow: hidden;
}

.canvas-container canvas {
  max-width: 100%;
  max-height: 80vh;
  border-radius: 8px;
  image-rendering: -webkit-optimize-contrast;
  image-rendering: high-quality;
}

/* ─── Empty State ──────────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: var(--sp-3xl) var(--sp-xl);
}

.empty-state__image {
  width: 180px;
  height: auto;
  margin-bottom: var(--sp-lg);
  opacity: 0.85;
}

.empty-state__title {
  font-size: var(--fs-lg);
  font-weight: var(--fw-bold);
  color: var(--slate-700);
  margin-bottom: var(--sp-sm);
}

.empty-state__description {
  font-size: var(--fs-base);
  color: var(--slate-500);
  max-width: 320px;
  margin: 0 auto;
}

/* ─── Loading Overlay ──────────────────────────────────── */
.loading-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.5);
  backdrop-filter: blur(4px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}

.loading-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.loading-spinner {
  width: 48px;
  height: 48px;
  border: 4px solid var(--slate-200);
  border-top-color: var(--brand-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-bottom: var(--sp-lg);
}

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

.loading-text {
  font-size: var(--fs-lg);
  font-weight: var(--fw-semibold);
  color: white;
  margin-bottom: var(--sp-sm);
}

.loading-subtext {
  font-size: var(--fs-sm);
  color: var(--slate-300);
}

/* ─── Modal (Custom Alert — NO window.alert) ───────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.5);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.modal-content {
  background: white;
  border-radius: 24px;
  padding: var(--sp-2xl);
  max-width: 420px;
  width: 90%;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
  transform: scale(0.95) translateY(10px);
  transition: transform var(--transition-slow);
}

.modal-overlay.active .modal-content {
  transform: scale(1) translateY(0);
}

.modal-content__icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--sp-base);
}

.modal-content__icon--error {
  background: var(--color-error-bg);
  color: var(--color-error);
}

.modal-content__icon--success {
  background: var(--color-success-bg);
  color: var(--color-success);
}

.modal-content__icon .material-symbols-rounded {
  font-size: 28px;
}

.modal-content__title {
  font-size: var(--fs-xl);
  font-weight: var(--fw-bold);
  color: var(--slate-800);
  text-align: center;
  margin-bottom: var(--sp-sm);
}

.modal-content__message {
  font-size: var(--fs-base);
  color: var(--slate-500);
  text-align: center;
  margin-bottom: var(--sp-xl);
  line-height: 1.6;
}

.modal-content__actions {
  display: flex;
  justify-content: center;
}

/* ─── Selected SKU Info Panel ──────────────────────────── */
.selected-sku-info {
  margin-top: var(--sp-base);
  padding: var(--sp-base);
  background: var(--slate-50);
  border-radius: 14px;
  border: 1px solid var(--slate-100);
}

.selected-sku-info__name {
  font-size: var(--fs-md);
  font-weight: var(--fw-bold);
  color: var(--slate-800);
  margin-bottom: var(--sp-sm);
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
}

/* ─── Download Section ─────────────────────────────────── */
.download-section {
  display: flex;
  gap: 12px;
  margin-top: var(--sp-base);
}



/* ─── Edit Upload Section ───────────────────────────── */

.upload-zone--compact {
  min-height: 80px;
  position: relative;
}

.upload-zone--compact .upload-zone__icon .material-symbols-rounded {
  font-size: 28px;
}

.upload-zone--compact.has-file {
  padding: 8px;
}

.upload-zone--compact .upload-zone__preview {
  max-height: 120px;
  border-radius: 8px;
}

.upload-zone__hint {
  font-size: var(--fs-sm);
  color: var(--slate-400);
  margin-top: var(--sp-xs);
}

.upload-zone__clear {
  position: absolute;
  top: 8px;
  right: 8px;
  background: rgba(239, 68, 68, 0.9);
  color: white;
  border: none;
  border-radius: 6px;
  padding: 4px 10px;
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  cursor: pointer;
  transition: background var(--transition-fast);
  z-index: 2;
}

.upload-zone__clear:hover {
  background: rgba(220, 38, 38, 1);
}


/* ─── Materials Grid ────────────────────────────────── */

.materials-grid {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.material-item {
  position: relative;
  width: 80px;
  height: 80px;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--slate-200);
}

.material-item__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.material-item__label {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(0, 0, 0, 0.6);
  color: white;
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  text-align: center;
  padding: 2px 0;
}

.material-item__remove {
  position: absolute;
  top: 2px;
  right: 2px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.5);
  color: white;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  line-height: 1;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.material-item:hover .material-item__remove {
  opacity: 1;
}

.material-add-btn {
  width: 80px;
  height: 80px;
  border-radius: 10px;
  border: 2px dashed var(--slate-200);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  cursor: pointer;
  color: var(--slate-500);
  font-size: var(--fs-sm);
  transition: all var(--transition-fast);
}

.material-add-btn:hover {
  border-color: var(--brand-primary);
  color: var(--brand-primary);
  background: var(--brand-primary-light);
}

.material-add-btn .material-symbols-rounded {
  font-size: 24px;
}

/* ─── Material: PDF / AI File Preview ──────────────── */

.material-item--file {
  background: var(--slate-50);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
}

.material-item__file-icon {
  font-size: 28px;
  color: var(--color-error);
}

.material-item__file-ext {
  font-size: 9px;
  font-weight: var(--fw-bold);
  color: var(--slate-500);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* ─── Edit Maket Button (below canvas) ─────────────── */

.btn--edit-maket {
  margin-top: var(--sp-base);
  border-color: var(--brand-primary);
  color: var(--brand-primary);
  transition: all var(--transition-base);
}

.btn--edit-maket:hover {
  background: var(--brand-primary-light);
  color: var(--brand-primary-hover);
  border-color: var(--brand-primary-hover);
}

/* ─── Print Size Row (Max Print W × H) ────────────── */

.print-size-row {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
}

.print-size-field {
  flex: 1;
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
}

.print-size-field__label {
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--slate-500);
  min-width: 40px;
  white-space: nowrap;
}

.print-size-field .field-input {
  flex: 1;
  padding-right: 36px;
  -moz-appearance: textfield;
  appearance: textfield;
}

.print-size-field .field-input::-webkit-outer-spin-button,
.print-size-field .field-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.print-size-field__unit {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--slate-400);
  pointer-events: none;
}

.print-size-separator {
  font-size: var(--fs-lg);
  font-weight: var(--fw-bold);
  color: var(--slate-300);
  line-height: 1;
}

.field-hint {
  font-size: var(--fs-sm);
  color: var(--slate-400);
  margin-top: var(--sp-sm);
  line-height: 1.5;
}

/* ─── Anchor Position Selector ──────────────────────── */

.anchor-position-group {
  margin-top: var(--sp-sm);
  padding: var(--sp-sm) var(--sp-base);
  background: var(--slate-50);
  border-radius: 8px;
  border: 1px solid var(--slate-100);
}

.anchor-row {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
}

.anchor-row + .anchor-row {
  margin-top: var(--sp-xs);
}

.anchor-label {
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--slate-500);
  min-width: 65px;
  flex-shrink: 0;
}

.anchor-buttons {
  display: flex;
  gap: 4px;
}

.anchor-btn {
  padding: 4px 10px;
  font-size: var(--fs-xs);
  font-weight: var(--fw-medium);
  border: 1px solid var(--slate-200);
  border-radius: 6px;
  background: white;
  color: var(--slate-500);
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
}

.anchor-btn:hover {
  border-color: var(--brand-primary);
  color: var(--brand-primary);
  background: var(--brand-primary-light);
}

.anchor-btn--active {
  border-color: var(--brand-primary);
  background: var(--brand-primary);
  color: white;
}

.anchor-btn--active:hover {
  background: var(--brand-primary-hover);
  border-color: var(--brand-primary-hover);
  color: white;
}

/* ─── Quick Refine ──────────────────────────────────── */

.quick-refine {
  margin-top: var(--sp-base);
  padding: var(--sp-base);
  background: var(--slate-50);
  border-radius: 12px;
  border: 1px solid var(--slate-100);
}

.quick-refine__row {
  display: flex;
  gap: var(--sp-sm);
  margin-top: var(--sp-sm);
}

.quick-refine__input {
  flex: 1;
}

.quick-refine__btn {
  width: 44px;
  height: 44px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* ─── Button: Outline ───────────────────────────────── */

.btn-outline {
  background: transparent;
  border: 1px solid var(--slate-200);
  color: var(--slate-600);
}

.btn-outline:hover {
  background: var(--slate-50);
  color: var(--slate-800);
  border-color: var(--slate-400);
}

.btn-outline:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-secondary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ─── Button: Accent (PDF Export) ──────────────────── */

.btn-accent {
  background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
  color: white;
  border: none;
  box-shadow: 0 2px 8px rgba(239, 68, 68, 0.25);
}

.btn-accent:hover {
  background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);
  box-shadow: 0 4px 14px rgba(239, 68, 68, 0.35);
  transform: translateY(-1px);
}

.btn-accent:active {
  transform: translateY(0);
}

/* ─── Review Gate Section ──────────────────────────── */

.review-section {
  margin-top: var(--sp-lg);
  padding: var(--sp-xl);
  background: linear-gradient(135deg, #fffbeb 0%, #fef3c7 100%);
  border-radius: 16px;
  border: 1.5px solid #fde68a;
  animation: reviewSlideIn 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes reviewSlideIn {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.review-section__header {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  margin-bottom: var(--sp-xs);
}

.review-section__header .material-symbols-rounded {
  font-size: 24px;
  color: #f59e0b;
}

.review-section__header h3 {
  font-size: var(--fs-lg);
  font-weight: var(--fw-bold);
  color: var(--slate-800);
}

.review-section__subtitle {
  font-size: var(--fs-sm);
  color: var(--slate-500);
  margin-bottom: var(--sp-lg);
}

/* ─── Star Rating ──────────────────────────────────── */

.star-rating {
  display: flex;
  align-items: center;
  gap: var(--sp-xs);
  margin-bottom: var(--sp-lg);
}

.star-rating .star {
  font-size: 32px;
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--slate-300);
  user-select: none;
  line-height: 1;
}

.star-rating .star:hover {
  transform: scale(1.2);
}

.star-rating .star.active {
  color: #f59e0b;
}

.star-rating .star.hover {
  color: #fbbf24;
  transform: scale(1.15);
}

.star-rating__label {
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--slate-500);
  margin-left: var(--sp-sm);
  min-width: 100px;
}

/* ─── Review Comment ───────────────────────────────── */

.review-section__comment {
  margin-bottom: var(--sp-lg);
}

.review-section__comment label {
  display: block;
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--slate-700);
  margin-bottom: var(--sp-sm);
}

.review-section__comment .required {
  color: var(--color-error);
}

.review-section__comment textarea {
  width: 100%;
  padding: var(--sp-md) var(--sp-base);
  border: 1.5px solid #fde68a;
  border-radius: var(--btn-radius);
  font-family: var(--font-family);
  font-size: var(--fs-base);
  color: var(--slate-800);
  background: white;
  outline: none;
  resize: vertical;
  min-height: 80px;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.review-section__comment textarea:focus {
  border-color: #f59e0b;
  box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.15);
}

.review-section__hint {
  font-size: var(--fs-xs);
  color: var(--slate-400);
  margin-top: var(--sp-xs);
  display: block;
}

.review-section__hint.valid {
  color: var(--color-success);
}

/* ─── Review Submit Button ─────────────────────────── */

.btn--review {
  background: linear-gradient(135deg, #f59e0b, #d97706);
  box-shadow: 0 2px 8px rgba(245, 158, 11, 0.3);
}

.btn--review:hover:not(:disabled) {
  background: linear-gradient(135deg, #d97706, #b45309);
  box-shadow: 0 4px 14px rgba(245, 158, 11, 0.4);
  transform: translateY(-1px);
}

.btn--review:disabled {
  background: var(--slate-300);
  box-shadow: none;
}

/* ─── Locked Gate UI ───────────────────────────────── */

.locked {
  position: relative;
  opacity: 0.5;
  pointer-events: none;
}

.locked::after {
  content: '🔒 Đánh giá để mở khóa';
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--slate-500);
  background: rgba(248, 250, 247, 0.6);
  backdrop-filter: blur(2px);
  border-radius: inherit;
  z-index: 5;
}

/* ─── Review Success State ─────────────────────────── */

.review-section.submitted {
  background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
  border-color: #86efac;
}

.review-section.submitted .review-section__header .material-symbols-rounded {
  color: var(--color-success);
}

.review-success-msg {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  padding: var(--sp-md);
  background: rgba(34, 197, 94, 0.1);
  border-radius: 10px;
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: #15803d;
  animation: reviewSlideIn 0.3s ease;
}

.review-success-msg .material-symbols-rounded {
  font-size: 20px;
  color: var(--color-success);
}

/* ─── Responsive ───────────────────────────────────── */
@media (max-width: 768px) {
  .container {
    padding: var(--sp-base);
  }

  .page-header {
    padding: var(--sp-base) 0;
  }

  .page-header__title {
    font-size: var(--fs-2xl);
  }

  .sku-grid {
    grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
    gap: var(--sp-sm);
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .card-body {
    padding: var(--sp-base);
  }

  .download-section {
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  .sku-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .btn-lg {
    font-size: var(--fs-base);
    padding: 12px 20px;
  }
}

/* ─── Utility ──────────────────────────────────────────── */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

.text-center { text-align: center; }
.mt-base { margin-top: var(--sp-base); }
.mt-lg { margin-top: var(--sp-lg); }
.mb-base { margin-bottom: var(--sp-base); }

/* ─── Selling Points ───────────────────────────────────── */

.selling-points {
  margin-top: 16px;
  padding: 16px 20px;
  background: linear-gradient(135deg, #fefce8 0%, #fef9c3 100%);
  border: 1px solid #fde68a;
  border-radius: 12px;
}

.selling-points__header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
  color: #92400e;
}

.selling-points__header .material-symbols-rounded {
  font-size: 20px;
  color: #d97706;
}

.selling-points__header h4 {
  margin: 0;
  font-size: 14px;
  font-weight: 600;
  color: #92400e;
}

.selling-points__item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 12px;
  margin-bottom: 6px;
  background: rgba(255, 255, 255, 0.7);
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.15s ease, transform 0.1s ease;
  position: relative;
}

.selling-points__item:hover {
  background: rgba(255, 255, 255, 0.95);
  transform: translateX(2px);
}

.selling-points__item:active {
  transform: scale(0.98);
}

.selling-points__item::before {
  content: '•';
  color: #d97706;
  font-weight: 700;
  font-size: 18px;
  line-height: 1.4;
  flex-shrink: 0;
}

.selling-points__item-text {
  font-size: 13px;
  line-height: 1.6;
  color: #78350f;
}

.selling-points__item-copy-hint {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 11px;
  color: #d97706;
  opacity: 0;
  transition: opacity 0.15s ease;
  pointer-events: none;
}

.selling-points__item:hover .selling-points__item-copy-hint {
  opacity: 1;
}

/* ─── Copy Toast ───────────────────────────────────────── */

.copy-toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: #065f46;
  color: #ecfdf5;
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 500;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
  z-index: 10000;
}

.copy-toast.active {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ─── Creativity Slider ────────────────────────────────── */

.creativity-group {
  margin-bottom: var(--sp-lg);
}

.creativity-slider-row {
  display: flex;
  align-items: center;
  gap: var(--sp-md);
  margin-top: var(--sp-sm);
}

.creativity-slider-labels {
  display: flex;
  justify-content: space-between;
  margin-top: 4px;
}

.creativity-slider-labels span {
  font-size: var(--fs-xs);
  color: var(--slate-400);
  font-weight: var(--fw-medium);
}

.creativity-slider {
  flex: 1;
  -webkit-appearance: none;
  appearance: none;
  height: 6px;
  border-radius: 3px;
  background: linear-gradient(to right, #3b82f6, #8b5cf6, #ec4899);
  outline: none;
  opacity: 0.85;
  transition: opacity var(--transition-fast);
}

.creativity-slider:hover {
  opacity: 1;
}

.creativity-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: white;
  border: 3px solid var(--brand-primary);
  cursor: pointer;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
  transition: transform var(--transition-fast);
}

.creativity-slider::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

.creativity-slider::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: white;
  border: 3px solid var(--brand-primary);
  cursor: pointer;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
}

.creativity-value {
  font-size: var(--fs-sm);
  font-weight: var(--fw-bold);
  color: var(--slate-600);
  min-width: 32px;
  text-align: center;
}

/* ─── Variant Count Selector ───────────────────────────── */

.variant-group {
  margin-bottom: var(--sp-lg);
}

.variant-pills {
  display: flex;
  gap: var(--sp-sm);
  margin-top: var(--sp-sm);
}

.variant-pill {
  padding: 8px 16px;
  border-radius: 10px;
  border: 1.5px solid var(--slate-200);
  background: white;
  font-family: var(--font-family);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--slate-600);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.variant-pill:hover {
  border-color: var(--brand-primary);
  color: var(--brand-primary);
}

.variant-pill.active {
  background: var(--brand-primary);
  border-color: var(--brand-primary);
  color: white;
  box-shadow: 0 2px 6px rgba(120, 188, 32, 0.3);
}

.variant-pill__hint {
  font-size: var(--fs-xs);
  color: var(--slate-400);
  margin-top: 4px;
}
/* ─── Model Selector ──────────────────────────────────── */

.model-group {
  margin-bottom: var(--sp-lg);
}

.model-pills {
  display: flex;
  gap: var(--sp-sm);
  margin-top: var(--sp-sm);
}

.model-pill {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 12px;
  border: 1.5px solid var(--slate-200);
  background: white;
  font-family: var(--font-family);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.model-pill:hover {
  border-color: var(--brand-primary);
  background: var(--slate-50);
}

.model-pill.active {
  border-color: var(--brand-primary);
  background: linear-gradient(135deg, rgba(120, 188, 32, 0.06), rgba(120, 188, 32, 0.12));
  box-shadow: 0 2px 8px rgba(120, 188, 32, 0.2);
}

.model-pill__icon {
  font-size: 22px;
  line-height: 1;
}

.model-pill__info {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.model-pill__name {
  font-size: var(--fs-sm);
  font-weight: var(--fw-bold);
  color: var(--slate-700);
}

.model-pill.active .model-pill__name {
  color: var(--brand-primary);
}

.model-pill__desc {
  font-size: 11px;
  color: var(--slate-400);
  line-height: 1.2;
}

/* ─── Variant Carousel ─────────────────────────────────── */

.variant-carousel {
  position: relative;
  margin-top: var(--sp-base);
}

.variant-carousel__track {
  display: flex;
  overflow: hidden;
  border-radius: 12px;
}

.variant-carousel__slide {
  min-width: 100%;
  transition: transform var(--transition-slow);
}

.variant-carousel__slide img {
  max-width: 100%;
  max-height: 80vh;
  display: block;
  margin: 0 auto;
  border-radius: 8px;
  image-rendering: -webkit-optimize-contrast;
  image-rendering: high-quality;
}

.variant-carousel__nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--slate-200);
  color: var(--slate-600);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  z-index: 5;
}

.variant-carousel__nav:hover {
  background: white;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.variant-carousel__nav--prev { left: 8px; }
.variant-carousel__nav--next { right: 8px; }

.variant-carousel__dots {
  display: flex;
  justify-content: center;
  gap: 6px;
  margin-top: var(--sp-sm);
}

.variant-carousel__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--slate-300);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  padding: 0;
}

.variant-carousel__dot.active {
  background: var(--brand-primary);
  transform: scale(1.3);
}

.variant-carousel__label {
  text-align: center;
  margin-top: var(--sp-xs);
  font-size: var(--fs-sm);
  color: var(--slate-500);
  font-weight: var(--fw-semibold);
}

/* ─── Loading Progress Steps ───────────────────────────── */

.loading-steps {
  margin-top: var(--sp-lg);
  display: flex;
  flex-direction: column;
  gap: var(--sp-sm);
  min-width: 260px;
}

.loading-step {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  padding: 6px 10px;
  border-radius: 8px;
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--slate-400);
  transition: all var(--transition-base);
}

.loading-step.active {
  color: white;
  font-weight: var(--fw-semibold);
}

.loading-step.done {
  color: var(--color-success);
}

.loading-step__icon {
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
}

.loading-step.active .loading-step__icon {
  animation: pulse 1.2s ease infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* ─── Prompt History Panel ─────────────────────────────── */

.prompt-history {
  margin-top: var(--sp-base);
}

.prompt-history__toggle {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  width: 100%;
  padding: 10px 14px;
  background: var(--slate-50);
  border: 1px solid var(--slate-200);
  border-radius: 10px;
  cursor: pointer;
  font-family: var(--font-family);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--slate-600);
  transition: all var(--transition-fast);
}

.prompt-history__toggle:hover {
  background: var(--slate-100);
  color: var(--slate-800);
}

.prompt-history__toggle .material-symbols-rounded {
  font-size: 18px;
  transition: transform var(--transition-fast);
}

.prompt-history__toggle.expanded .material-symbols-rounded:last-child {
  transform: rotate(180deg);
}

.prompt-history__content {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow);
}

.prompt-history__content.expanded {
  max-height: 500px;
  overflow-y: auto;
}

.prompt-history__text {
  margin-top: var(--sp-sm);
  padding: var(--sp-md);
  background: var(--slate-50);
  border: 1px solid var(--slate-200);
  border-radius: 10px;
  font-family: 'SF Mono', 'Menlo', 'Consolas', monospace;
  font-size: var(--fs-xs);
  line-height: 1.65;
  color: var(--slate-600);
  white-space: pre-wrap;
  word-break: break-word;
}

.prompt-history__meta {
  display: flex;
  gap: var(--sp-sm);
  flex-wrap: wrap;
  margin-top: var(--sp-sm);
}

.prompt-history__tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: 6px;
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  background: var(--tag-bg);
  border: 1px solid var(--tag-border);
  color: var(--tag-text);
}

.prompt-history__tag .material-symbols-rounded {
  font-size: 12px;
}