.xito-qr {
  --xito-bg: #f3f1ec;
  --xito-surface: #fbfaf7;
  --xito-inset: #ece9e2;
  --xito-fg: #1c1b19;
  --xito-muted: #6a6760;
  --xito-subtle: #8a867c;
  --xito-primary: #1c1b19;
  --xito-primary-fg: #fbfaf7;
  --xito-accent: #3d5a6c;
  --xito-border: #ddd8ce;
  --xito-ring: #3d5a6c;
  --xito-danger: #9b3d2c;
  --xito-font: "Be Vietnam Pro", ui-sans-serif, system-ui, sans-serif;
  --xito-display: "Source Serif 4", ui-serif, Georgia, serif;
  --xito-mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --xito-radius-sm: 8px;
  --xito-radius-md: 12px;
  --xito-radius-lg: 16px;
  --xito-radius-xl: 28px;
  --xito-shadow-border:
    0 0 0 1px rgba(28, 27, 25, 0.08),
    0 1px 2px -1px rgba(28, 27, 25, 0.06);
  --xito-shadow-card:
    0 0 0 1px rgba(28, 27, 25, 0.06),
    0 1px 2px -1px rgba(28, 27, 25, 0.05),
    0 8px 24px -12px rgba(28, 27, 25, 0.08);
  --xito-ease: cubic-bezier(0.23, 1, 0.32, 1);
  --xito-motion: 150ms;
  box-sizing: border-box;
  color: var(--xito-fg);
  font-family: var(--xito-font);
  -webkit-font-smoothing: antialiased;
}

.xito-qr *,
.xito-qr *::before,
.xito-qr *::after {
  box-sizing: border-box;
}

.xito-qr--studio {
  max-width: 64rem;
  margin: 0 auto;
  padding: 1.5rem 0 2rem;
}

.xito-qr__header {
  max-width: 100%;
  text-align: center;
}

.xito-qr__eyebrow {
  margin: 0;
  /* Desktop: trước đó 1.375rem (22px) + 8px = 30px */
  font-size: 1.875rem;
  font-weight: bold;
  font-family: 'Be Vietnam Pro', sans-serif;
  letter-spacing: 0.04em;
  color: #7a110d;
  text-align: center;
}

@media (max-width: 768px) {
  .xito-qr__eyebrow {
    /* Mobile: gốc cũ 0.875rem (14px) + 3px = 17px */
    font-size: 1.0625rem;
  }
}

.xito-qr__title {
  margin: 0.5rem 0 0;
  font-family: var(--xito-display);
  /* Giảm mỗi mốc clamp đi 3px so với cũ */
  font-size: clamp(2.0625rem, calc(1.5rem + 2.2vw - 3px), 3.0625rem);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--xito-fg);
  text-wrap: balance;
}

.xito-qr__description {
  margin: 0.75rem 0 0;
  max-width: 42rem;
}

.xito-qr__main-text,
.xito-qr__tip {
  margin: 0;
  font-size: 1rem;
  line-height: 1.6;
  text-align: justify;
}

.xito-qr__main-text {
  color: var(--xito-muted);
}

.xito-qr__tip {
  margin-top: 8px;
  padding: 10px;
  border-radius: 6px;
  background-color: #f9f9f9;
  color: #555555;
}

/* Mobile: giữ nguyên cỡ chữ 16px và chừa lề ngang 3%. */
@media (max-width: 767px) {
  .xito-qr__description {
    padding: 0 3%;
  }
}

/* Desktop: đoạn chính 24px, phần mẹo nhỏ hơn 2px. */
@media (min-width: 768px) {
  .xito-qr__main-text {
    font-size: 1.5rem;
  }

  .xito-qr__tip {
    font-size: 1.375rem;
  }
}

.xito-qr__sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.xito-qr__layout {
  display: grid;
  gap: 1.5rem;
  margin-top: 2rem;
}

@media (min-width: 960px) {
  .xito-qr__layout {
    grid-template-columns: minmax(0, 1fr) minmax(20rem, 24rem);
    gap: 2rem;
    margin-top: 2.5rem;
    align-items: start;
  }

  .xito-qr__preview-card {
    position: sticky;
    top: 1.5rem;
  }
}

.xito-qr__preview-card,
.xito-qr__form {
  background: var(--xito-surface);
  border-radius: var(--xito-radius-xl);
  padding: 1rem;
  box-shadow: var(--xito-shadow-card);
}

.xito-qr__stage {
  position: relative;
  aspect-ratio: 1;
  width: 100%;
  overflow: hidden;
  border-radius: var(--xito-radius-md);
  background: var(--xito-inset);
}

.xito-qr__stage.is-ready {
  background: transparent;
}

.xito-qr [hidden] {
  display: none !important;
}

.xito-qr__placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 1.5rem;
  text-align: center;
  color: var(--xito-muted);
  font-size: 0.875rem;
  line-height: 1.5;
}

.xito-qr__placeholder.is-hidden {
  display: none !important;
}

.xito-qr__placeholder p {
  margin: 0;
}

.xito-qr__icon {
  display: block;
  width: 2.5rem;
  height: 2.5rem;
  color: var(--xito-subtle);
}

.xito-qr__icon svg,
.xito-qr__button svg,
.xito-qr__warning-icon svg {
  display: block;
  width: 100%;
  height: 100%;
}

.xito-qr__placeholder.is-error .xito-qr__icon {
  color: var(--xito-danger);
  width: 2rem;
  height: 2rem;
}

.xito-qr__image {
  display: block;
  width: 100%;
  height: 100%;
  image-rendering: pixelated;
}

.xito-qr__preview-meta {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 1rem;
}

@media (min-width: 640px) {
  .xito-qr__preview-meta {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }

  .xito-qr__button {
    width: auto;
  }
}

.xito-qr__size-label,
.xito-qr__size-value,
.xito-qr__count {
  margin: 0;
  font-variant-numeric: tabular-nums;
  color: var(--xito-muted);
  font-size: 0.875rem;
}

.xito-qr__count,
.xito-qr__slider-ends {
  font-size: 0.75rem;
  color: var(--xito-subtle);
}

.xito-qr__button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  width: 100%;
  min-height: 2.75rem;
  padding: 0 1rem;
  border: 0;
  border-radius: var(--xito-radius-md);
  background: var(--xito-primary);
  color: var(--xito-primary-fg);
  font: 500 0.9375rem/1 var(--xito-font);
  cursor: pointer;
  transition: opacity var(--xito-motion) var(--xito-ease), transform var(--xito-motion) var(--xito-ease);
}

.xito-qr__button svg {
  width: 1.1rem;
  height: 1.1rem;
}

.xito-qr__button:hover:not(:disabled) {
  transform: translateY(-1px);
}

.xito-qr__button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.xito-qr__button:focus-visible,
.xito-qr__textarea:focus-visible,
.xito-qr__hex:focus-visible,
.xito-qr__swatch:focus-visible,
.xito-qr__slider:focus-visible,
.xito-qr__level:focus-within {
  outline: none;
  box-shadow: var(--xito-shadow-border), 0 0 0 2px var(--xito-bg), 0 0 0 4px var(--xito-ring);
}

.xito-qr__form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.xito-qr__field {
  display: grid;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  border: 0;
  min-width: 0;
}

.xito-qr__field-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
}

.xito-qr__label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--xito-fg);
}

.xito-qr__textarea,
.xito-qr__hex {
  width: 100%;
  border: 0;
  border-radius: var(--xito-radius-md);
  background: var(--xito-inset);
  color: var(--xito-fg);
  font: 400 1rem/1.5 var(--xito-font);
  box-shadow: var(--xito-shadow-border);
}

.xito-qr__textarea {
  min-height: 8.5rem;
  padding: 0.85rem 0.95rem;
  resize: vertical;
}

.xito-qr__hex {
  min-width: 0;
  flex: 1;
  min-height: 2.75rem;
  padding: 0 0.75rem;
  font-family: var(--xito-mono);
  text-transform: uppercase;
}

.xito-qr__colors {
  display: grid;
  gap: 1rem;
}

@media (min-width: 480px) {
  .xito-qr__colors {
    grid-template-columns: 1fr 1fr;
  }
}

.xito-qr__color-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.xito-qr__swatch {
  appearance: none;
  -webkit-appearance: none;
  width: 2.75rem;
  height: 2.75rem;
  flex-shrink: 0;
  padding: 0;
  border: none;
  border-radius: var(--xito-radius-md);
  background: transparent;
  box-shadow: var(--xito-shadow-border);
  cursor: pointer;
}

.xito-qr__swatch::-webkit-color-swatch-wrapper {
  padding: 0;
}

.xito-qr__swatch::-webkit-color-swatch {
  border: none;
  border-radius: calc(var(--xito-radius-md) - 1px);
}

.xito-qr__swatch::-moz-color-swatch {
  border: none;
  border-radius: calc(var(--xito-radius-md) - 1px);
}

.xito-qr__warning {
  display: none;
  align-items: flex-start;
  gap: 0.5rem;
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--xito-danger);
}

.xito-qr__warning.is-visible {
  display: flex;
}

.xito-qr__warning-icon {
  width: 1rem;
  height: 1rem;
  margin-top: 0.15rem;
  flex-shrink: 0;
}

.xito-qr__slider {
  width: 100%;
  accent-color: var(--xito-accent);
  cursor: pointer;
}

.xito-qr__slider-ends {
  display: flex;
  justify-content: space-between;
  font-variant-numeric: tabular-nums;
}

.xito-qr__levels {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.25rem;
  padding: 0.25rem;
  border-radius: var(--xito-radius-lg);
  background: var(--xito-inset);
}

.xito-qr__level {
  position: relative;
  display: flex;
  min-height: 2.75rem;
  align-items: center;
  justify-content: center;
  border-radius: var(--xito-radius-md);
  color: var(--xito-muted);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: background-color var(--xito-motion) var(--xito-ease), color var(--xito-motion) var(--xito-ease);
}

.xito-qr__level input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.xito-qr__level:hover {
  color: var(--xito-fg);
}

.xito-qr__level.is-active {
  background: var(--xito-surface);
  color: var(--xito-fg);
  box-shadow: var(--xito-shadow-border);
}

.xito-qr__hint {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--xito-muted);
}

.xito-qr--static {
  margin: 0;
}

.xito-qr__static-frame {
  width: 100%;
  margin: 0 auto;
  border-radius: var(--xito-radius-lg);
  padding: 0.75rem;
  box-shadow: var(--xito-shadow-card);
  background: var(--xito-surface);
}

.xito-qr__static-frame .xito-qr__image {
  border-radius: var(--xito-radius-sm);
}

.xito-qr__static-status {
  margin: 0.5rem 0 0;
  font-size: 0.875rem;
  color: var(--xito-danger);
}

@media (prefers-reduced-motion: reduce) {
  .xito-qr,
  .xito-qr * {
    transition-duration: 0.01ms !important;
  }
}

/* ── Canvas (hiển thị QR + logo) ─────────────────────────────────────────── */
.xito-qr__canvas {
  display: block;
  width: 100%;
  height: 100%;
}

/* ── Nút phụ (Tải lên hình ảnh) ─────────────────────────────────────────── */
.xito-qr__button--secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 2.75rem;
  padding: 0 1rem;
  border: 0;
  border-radius: var(--xito-radius-md);
  background: var(--xito-inset);
  color: var(--xito-fg);
  font: 500 0.9375rem/1 var(--xito-font);
  box-shadow: var(--xito-shadow-border);
  cursor: pointer;
  transition: background-color var(--xito-motion) var(--xito-ease), transform var(--xito-motion) var(--xito-ease);
  user-select: none;
}

.xito-qr__button--secondary svg {
  width: 1.1rem;
  height: 1.1rem;
}

.xito-qr__button--secondary:hover {
  background: var(--xito-border);
  transform: translateY(-1px);
}

/* ── Nút xóa logo (ghost / danger) ──────────────────────────────────────── */
.xito-qr__button--ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 2.75rem;
  padding: 0 1rem;
  border: 1.5px solid var(--xito-danger);
  border-radius: var(--xito-radius-md);
  background: transparent;
  color: var(--xito-danger);
  font: 500 0.9375rem/1 var(--xito-font);
  cursor: pointer;
  transition: background-color var(--xito-motion) var(--xito-ease), transform var(--xito-motion) var(--xito-ease);
}

.xito-qr__button--ghost svg {
  width: 1.1rem;
  height: 1.1rem;
}

.xito-qr__button--ghost:hover {
  background: rgba(155, 61, 44, 0.08);
  transform: translateY(-1px);
}

/* ── Logo Section ────────────────────────────────────────────────────────── */
.xito-qr__logo-section {
  margin: 0;
  padding: 0;
  border: 0;
  min-width: 0;
  display: grid;
  gap: 0.5rem;
}

.xito-qr__logo-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-top: 0.25rem;
}

/* ── Logo Grid ───────────────────────────────────────────────────────────── */
.xito-qr__logo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(46px, 1fr));
  gap: 0.375rem;
  margin-top: 0.375rem;
}

/* Tiêu đề nhóm logo (chiếm toàn bộ chiều ngang grid) */
.xito-qr__logo-category {
  grid-column: 1 / -1;
  margin: 0.25rem 0 0.125rem;
  padding: 0;
  font-size: 0.6875rem;       /* 11px — nhỏ gọn */
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--xito-subtle);
}

/* Nhóm thứ 2 trở đi: thêm khoảng cách phía trên để tách biệt */
.xito-qr__logo-category--gap {
  margin-top: 0.875rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--xito-border);
}

.xito-qr__logo-item {
  position: relative;
  aspect-ratio: 1;
  padding: 7px;
  border: 2px solid transparent;
  border-radius: 14px;
  cursor: pointer;
  background: transparent;
  transition:
    transform var(--xito-motion) var(--xito-ease),
    box-shadow var(--xito-motion) var(--xito-ease);
  overflow: hidden;
  outline: none;
}

.xito-qr__logo-item img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  pointer-events: none;
}

.xito-qr__logo-item:hover {
  transform: scale(1.1);
}

.xito-qr__logo-item:focus-visible {
  box-shadow: 0 0 0 2px var(--xito-bg), 0 0 0 4px var(--xito-ring);
}

.xito-qr__logo-item.is-active {
  border-color: var(--xito-ring);
  box-shadow:
    0 0 0 2px var(--xito-bg),
    0 0 0 4px var(--xito-ring);
}

/* ── Nút mở Modal logo ───────────────────────────────────────────────────── */
.xito-qr__button--logo-open {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 2.75rem;
  padding: 0 1rem;
  border: 1.5px solid var(--xito-accent);
  border-radius: var(--xito-radius-md);
  background: transparent;
  color: var(--xito-accent);
  font: 500 0.9375rem/1 var(--xito-font);
  cursor: pointer;
  transition:
    background-color var(--xito-motion) var(--xito-ease),
    transform var(--xito-motion) var(--xito-ease);
}

.xito-qr__button--logo-open svg {
  width: 1.1rem;
  height: 1.1rem;
}

.xito-qr__button--logo-open:hover {
  background: rgba(61, 90, 108, 0.08);
  transform: translateY(-1px);
}

/* ── Modal / Popup logo ──────────────────────────────────────────────────── */
.xito-qr__modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.xito-qr__modal.is-open {
  display: flex;
}

.xito-qr__modal-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  cursor: pointer;
}

.xito-qr__modal-box {
  position: relative;
  z-index: 1;
  background: var(--xito-surface);
  border-radius: var(--xito-radius-xl);
  box-shadow:
    0 0 0 1px rgba(28, 27, 25, 0.08),
    0 24px 48px -12px rgba(28, 27, 25, 0.28);
  width: min(90vw, 540px);
  max-height: 80vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.xito-qr__modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem 0.875rem;
  border-bottom: 1px solid var(--xito-border);
  flex-shrink: 0;
}

.xito-qr__modal-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--xito-fg);
}

.xito-qr__modal-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  padding: 0;
  border: 0;
  border-radius: var(--xito-radius-sm);
  background: transparent;
  color: var(--xito-muted);
  cursor: pointer;
  transition:
    background-color var(--xito-motion) var(--xito-ease),
    color var(--xito-motion) var(--xito-ease);
}

.xito-qr__modal-close:hover {
  background: var(--xito-inset);
  color: var(--xito-fg);
}

.xito-qr__modal-close svg {
  width: 1.25rem;
  height: 1.25rem;
  display: block;
}

.xito-qr__modal-body {
  padding: 1rem 1.25rem 1.25rem;
  overflow-y: auto;
  flex: 1;
}

/* Grid bên trong modal không cần margin-top */
.xito-qr__modal-body .xito-qr__logo-grid {
  margin-top: 0;
}