.qr-pro {
  --bg-body: #f8fafc;
  --bg-card: #ffffff;
  --primary: #6366f1;
  --primary-light: #e0e7ff;
  --text-main: #1e293b;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --card-border: #ffffff;
  --surface-subtle: #f8fafc;
  --surface-muted: #f1f5f9;
  --field-bg: #f8fafc;
  --field-focus-bg: #ffffff;
  --switch-bg: #cbd5e1;
  --range-track: #cbd5e1;
  --dot-border: rgba(0, 0, 0, 0.1);
  --checker-a: #ffffff;
  --checker-b: #f1f5f9;
  --btn-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
  --btn-shadow-hover: 0 8px 25px rgba(99, 102, 241, 0.4);
  --notice-bg: #fff7ed;
  --notice-border: #fed7aa;
  --notice-text: #9a3412;
  --radius: 16px;
  --shadow-soft: 0 10px 30px -5px rgba(0, 0, 0, 0.05);
  background: transparent;
  color: var(--text-main);
  font-family: 'Inter', sans-serif;
  padding: 60px 0 100px;
}

body.theme-dark .qr-pro,
body.dark .qr-pro,
.theme-dark .qr-pro,
.dark .qr-pro,
[data-theme="dark"] .qr-pro {
  --bg-card: rgba(15, 23, 42, 0.86);
  --primary-light: rgba(99, 102, 241, 0.18);
  --text-main: #e2e8f0;
  --text-muted: #94a3b8;
  --border: #233247;
  --card-border: rgba(148, 163, 184, 0.22);
  --surface-subtle: #131d30;
  --surface-muted: #0f172a;
  --field-bg: #111b2d;
  --field-focus-bg: #162237;
  --switch-bg: #475569;
  --range-track: #334155;
  --dot-border: rgba(148, 163, 184, 0.45);
  --checker-a: #182638;
  --checker-b: #111f30;
  --btn-shadow: 0 4px 15px rgba(99, 102, 241, 0.25);
  --btn-shadow-hover: 0 8px 25px rgba(99, 102, 241, 0.35);
  --notice-bg: rgba(154, 52, 18, 0.22);
  --notice-border: rgba(251, 146, 60, 0.45);
  --notice-text: #fdba74;
  --shadow-soft: 0 18px 44px -14px rgba(2, 6, 23, 0.75);
}

.qr-pro * {
  box-sizing: border-box;
}

.qr-pro .tool-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 30px;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 40px;
  align-items: start;
}

.qr-pro .card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 40px;
  box-shadow: var(--shadow-soft);
  border: 1px solid var(--card-border);
}

.qr-pro .section-title {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 15px;
  letter-spacing: 1px;
}

.qr-pro .types-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
  gap: 12px;
  margin-bottom: 40px;
}

.qr-pro .type-btn {
  background: var(--surface-subtle);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 15px 10px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.qr-pro .type-btn i {
  font-size: 1.5rem;
  color: var(--text-muted);
  transition: 0.3s;
}

.qr-pro .type-btn span {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  transition: 0.3s;
}

.qr-pro .type-btn:hover {
  transform: translateY(-4px);
  background: var(--field-focus-bg);
  border-color: var(--primary);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
}

.qr-pro .type-btn:hover i,
.qr-pro .type-btn:hover span {
  color: var(--primary);
}

.qr-pro .type-btn.active {
  background: var(--primary-light);
  border-color: var(--primary);
}

.qr-pro .type-btn.active i,
.qr-pro .type-btn.active span {
  color: var(--primary);
}

.qr-pro .input-group {
  display: none;
  animation: fadeIn 0.4s ease;
}

.qr-pro .input-group.active {
  display: block;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(5px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.qr-pro .field-wrap {
  margin-bottom: 20px;
}

.qr-pro .field-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 8px;
  display: block;
}

.qr-pro .form-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 15px;
}

.qr-pro input,
.qr-pro textarea,
.qr-pro select {
  width: 100%;
  padding: 14px 16px;
  background: var(--field-bg);
  border: 2px solid transparent;
  border-radius: 12px;
  font-size: 0.95rem;
  color: var(--text-main);
  transition: 0.2s;
  font-family: inherit;
}

.qr-pro input:focus,
.qr-pro textarea:focus,
.qr-pro select:focus {
  background: var(--field-focus-bg);
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
}

.qr-pro textarea {
  min-height: 110px;
  resize: vertical;
}

.qr-pro input::placeholder,
.qr-pro textarea::placeholder {
  color: var(--text-muted);
  opacity: 0.85;
}

.qr-pro .section-divider {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 30px 0;
}

.qr-pro .appearance-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 20px;
}

.qr-pro .color-picker-btn {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--surface-subtle);
  border: 2px solid transparent;
  padding: 10px 15px;
  border-radius: 12px;
  cursor: pointer;
  transition: 0.2s;
  position: relative;
}

.qr-pro .color-picker-btn:hover {
  background: var(--field-focus-bg);
  border-color: var(--border);
  transform: translateY(-2px);
}

.qr-pro .color-dot {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 2px solid var(--dot-border);
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.qr-pro .color-label {
  font-size: 0.9rem;
  font-weight: 500;
}

.qr-pro input[type="color"] {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}

.qr-pro .switch-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 15px;
  background: var(--surface-subtle);
  padding: 12px;
  border-radius: 12px;
}

.qr-pro .switch {
  position: relative;
  display: inline-block;
  width: 40px;
  height: 24px;
}

.qr-pro .switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.qr-pro .slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--switch-bg);
  transition: 0.4s;
  border-radius: 34px;
}

.qr-pro .slider:before {
  position: absolute;
  content: "";
  height: 18px;
  width: 18px;
  left: 3px;
  bottom: 3px;
  background-color: #ffffff;
  transition: 0.4s;
  border-radius: 50%;
}

.qr-pro input:checked + .slider {
  background-color: var(--primary);
}

.qr-pro input:checked + .slider:before {
  transform: translateX(16px);
}

.qr-pro input[type=range] {
  -webkit-appearance: none;
  width: 100%;
  background: transparent;
  padding: 0;
  border: none;
}

.qr-pro input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none;
  height: 18px;
  width: 18px;
  border-radius: 50%;
  background: var(--primary);
  margin-top: -7px;
  cursor: pointer;
  box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.2);
}

.qr-pro input[type=range]::-webkit-slider-runnable-track {
  width: 100%;
  height: 4px;
  background: var(--range-track);
  border-radius: 2px;
}

.qr-pro .range-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}

.qr-pro .range-value {
  font-size: 0.8rem;
  color: var(--primary);
  font-weight: 700;
}

.qr-pro .preview-sticky {
  position: sticky;
  top: 40px;
}

.qr-pro .qr-display-box {
  background: var(--checker-a);
  background-image: linear-gradient(45deg, var(--checker-b) 25%, transparent 25%),
    linear-gradient(-45deg, var(--checker-b) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, var(--checker-b) 75%),
    linear-gradient(-45deg, transparent 75%, var(--checker-b) 75%);
  background-size: 20px 20px;
  border-radius: var(--radius);
  padding: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  min-height: 320px;
  margin-bottom: 20px;
}

.qr-pro #qr-canvas {
  width: 100%;
  max-width: 280px;
}

.qr-pro #qr-canvas svg,
.qr-pro #qr-canvas canvas {
  width: 100%;
  height: auto;
  display: block;
}

.qr-pro .btn-large {
  width: 100%;
  padding: 16px;
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  border: none;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  transition: 0.3s;
  background: var(--primary);
  color: #ffffff;
  box-shadow: var(--btn-shadow);
}

.qr-pro .btn-large:hover {
  transform: translateY(-2px);
  box-shadow: var(--btn-shadow-hover);
}

.qr-pro .btn-large:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.qr-pro .qr-result {
  margin-top: 16px;
  font-size: 0.9rem;
  color: var(--text-muted);
  min-height: 20px;
}

.qr-pro .qr-result.is-error {
  color: #ef4444;
}

.qr-pro .qr-hint {
  margin: 20px 0 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.qr-pro .notice {
  background: var(--notice-bg);
  border: 1px solid var(--notice-border);
  color: var(--notice-text);
  padding: 12px 16px;
  border-radius: 12px;
  margin-bottom: 20px;
  font-size: 0.9rem;
}

.qr-pro .qr-hero {
  max-width: 1200px;
  margin: 0 auto 26px;
  padding: 0 30px;
  text-align: center;
}

.qr-pro .qr-main-title {
  margin: 0;
  font-size: clamp(1.7rem, 3vw, 2.5rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--text-main);
}

.qr-pro .qr-seo-content {
  max-width: 1200px;
  margin: 34px auto 0;
  padding: 34px 40px;
}

.qr-pro .qr-seo-description {
  margin: 0 0 24px;
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.75;
}

.qr-pro .qr-seo-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}

.qr-pro .qr-seo-block {
  background: var(--surface-subtle);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
}

.qr-pro .qr-seo-block h2 {
  margin: 0 0 12px;
  font-size: 1.15rem;
  line-height: 1.3;
  color: var(--text-main);
}

.qr-pro .qr-seo-block ul,
.qr-pro .qr-seo-block ol {
  margin: 0;
  padding-left: 20px;
  color: var(--text-muted);
  line-height: 1.7;
}

.qr-pro .qr-seo-faq {
  margin-top: 4px;
}

.qr-pro .qr-faq-item + .qr-faq-item {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
}

.qr-pro .qr-faq-item h3 {
  margin: 0 0 5px;
  font-size: 1rem;
  color: var(--text-main);
}

.qr-pro .qr-faq-item p {
  margin: 0;
  color: var(--text-muted);
  line-height: 1.6;
}

body.theme-dark .qr-pro select option,
body.dark .qr-pro select option,
.theme-dark .qr-pro select option,
.dark .qr-pro select option,
[data-theme="dark"] .qr-pro select option {
  background: #0f172a;
  color: #e2e8f0;
}

@media (max-width: 1024px) {
  .qr-pro .tool-container {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .qr-pro {
    padding: 40px 0 80px;
  }

  .qr-pro .tool-container {
    padding: 0 20px;
  }

  .qr-pro .qr-hero {
    padding: 0 20px;
    margin-bottom: 20px;
  }

  .qr-pro .qr-seo-content {
    margin-top: 24px;
    padding: 24px;
  }

  .qr-pro .form-grid-2,
  .qr-pro .appearance-grid,
  .qr-pro .qr-seo-grid {
    grid-template-columns: 1fr;
  }

  .qr-pro .qr-display-box {
    padding: 30px;
  }
}

@media (max-width: 560px) {
  .qr-pro {
    padding: 28px 0 70px;
  }

  .qr-pro .tool-container {
    padding: 0 12px;
    gap: 14px;
  }

  .qr-pro .qr-hero {
    padding: 0 12px;
  }

  .qr-pro .card {
    padding: 14px;
    border-radius: 12px;
  }

  .qr-pro .qr-main-title {
    font-size: 1.35rem;
  }

  .qr-pro .qr-seo-content {
    margin-top: 16px;
    padding: 14px;
  }

  .qr-pro .qr-seo-description {
    font-size: 0.92rem;
    margin-bottom: 14px;
  }

  .qr-pro .qr-seo-block {
    padding: 14px;
  }

  .qr-pro .qr-seo-block h2 {
    font-size: 1rem;
    margin-bottom: 8px;
  }

  .qr-pro .types-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
    margin-bottom: 22px;
  }

  .qr-pro .type-btn {
    padding: 10px 8px;
  }

  .qr-pro .type-btn i {
    font-size: 1.2rem;
  }

  .qr-pro .type-btn span {
    font-size: 0.78rem;
  }

  .qr-pro input,
  .qr-pro textarea,
  .qr-pro select {
    padding: 12px 13px;
    font-size: 0.9rem;
  }

  .qr-pro .qr-display-box {
    min-height: 240px;
    padding: 16px;
    margin-bottom: 14px;
  }

  .qr-pro #qr-canvas {
    max-width: 220px;
  }

  .qr-pro .btn-large {
    padding: 13px;
    font-size: 0.92rem;
  }
}