/* CSS Stylesheet for Prescription Lenses Page (سئوی کامل عدسی‌های طبی) */

:root {
  --lenses-primary: #101f3c;
  --lenses-secondary: #0088cc;
  --lenses-accent: #00d2c4;
  --lenses-bg-light: #f8fafc;
  --lenses-text-dark: #1e293b;
  --lenses-text-muted: #475569;
  --lenses-white: #ffffff;
  --lenses-card-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
  --lenses-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.prescription-lenses-page {
  font-family: 'Outfit', 'Vazirmatn', sans-serif;
  color: var(--lenses-text-dark);
  background-color: var(--lenses-bg-light);
  padding: 40px 0 80px;
  direction: rtl;
  text-align: right;
  line-height: 1.8;
}

.section-divider {
  display: none;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.lenses-hero {
  position: relative;
  background: linear-gradient(135deg, #0e1e38 0%, #1a3a60 100%);
  border-radius: 24px;
  overflow: hidden;
  padding: 60px;
  color: var(--lenses-white);
  margin-bottom: 50px;
  box-shadow: 0 20px 40px rgba(15, 23, 42, 0.15);
}

.lenses-hero-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}

.lenses-hero-content {
  flex: 1.2;
  max-width: 650px;
}

.lenses-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 210, 196, 0.15);
  color: var(--lenses-accent);
  padding: 8px 16px;
  border-radius: 50px;
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 20px;
  border: 1px solid rgba(0, 210, 196, 0.2);
}

.lenses-hero-title {
  font-size: 38px;
  font-weight: 800;
  line-height: 1.5;
  margin-bottom: 20px;
  color: var(--lenses-white);
  text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.lenses-hero-desc {
  font-size: 16px;
  color: #f1f5f9;
  margin-bottom: 30px;
  text-align: justify;
}

.lenses-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
}

.lenses-hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: linear-gradient(90deg, var(--lenses-secondary), #00a2f3);
  color: var(--lenses-white);
  padding: 14px 28px;
  border-radius: 50px;
  font-weight: 700;
  text-decoration: none;
  box-shadow: 0 4px 15px rgba(0, 136, 204, 0.3);
  transition: var(--lenses-transition);
}

.lenses-hero-cta:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0, 136, 204, 0.4);
  color: var(--lenses-white);
}

.lenses-hero-secondary-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(255, 255, 255, 0.1);
  color: var(--lenses-white);
  padding: 14px 28px;
  border-radius: 50px;
  font-weight: 700;
  text-decoration: none;
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition: var(--lenses-transition);
}

.lenses-hero-secondary-btn:hover {
  background: rgba(255, 255, 255, 0.2);
  color: var(--lenses-white);
  border-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-3px);
}

.lenses-hero-image {
  flex: 0.8;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.lenses-hero-image img {
  max-width: 100%;
  height: auto;
  border-radius: 20px;
  box-shadow: 0 15px 35px rgba(0,0,0,0.3);
  border: 4px solid rgba(255, 255, 255, 0.05);
  transition: var(--lenses-transition);
}

.lenses-hero-image::after {
  content: '';
  position: absolute;
  width: 120px;
  height: 120px;
  background: var(--lenses-accent);
  filter: blur(80px);
  border-radius: 50%;
  top: 10%;
  right: 10%;
  z-index: -1;
  opacity: 0.3;
}

/* ==========================================================================
   Section Headers
   ========================================================================== */
.section-header {
  text-align: center;
  margin-bottom: 40px;
}

.section-header h2 {
  font-size: 28px;
  font-weight: 800;
  color: var(--lenses-primary);
  margin-bottom: 12px;
  position: relative;
  display: inline-block;
}

.section-header h2::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background-color: var(--lenses-secondary);
  border-radius: 2px;
}

.section-header p {
  font-size: 16px;
  color: var(--lenses-text-muted);
}

/* ==========================================================================
   1. Optical Physics Section
   ========================================================================== */
.optical-physics-section,
.lens-geometry-section,
.vision-types-section,
.materials-section,
.coatings-section,
.brands-section-wrapper,
.buying-guide-section,
.care-cleaning-section {
  background-color: var(--lenses-white);
  border-radius: 24px;
  padding: 50px 40px;
  border: 1px solid #e2e8f0;
  box-shadow: var(--lenses-card-shadow);
  margin-bottom: 50px;
}

.physics-container {
  display: flex;
  gap: 40px;
  align-items: flex-start;
  margin-top: 30px;
}

.physics-image {
  flex: 1;
  background-color: var(--lenses-white);
  padding: 20px;
  border-radius: 24px;
  box-shadow: var(--lenses-card-shadow);
  border: 1px solid #f1f5f9;
}

.physics-image img {
  width: 100%;
  height: auto;
  border-radius: 16px;
  display: block;
}

.image-caption {
  font-size: 12px;
  color: var(--lenses-text-muted);
  text-align: center;
  margin-top: 12px;
  font-weight: 600;
}

.physics-content {
  flex: 1.5;
  display: flex;
  flex-direction: column;
  gap: 25px;
}

.physics-content > p {
  font-size: 16px;
  color: #334155;
  text-align: justify;
}

.physics-metrics-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.metric-card {
  background-color: #f8fafc;
  border-radius: 20px;
  padding: 25px;
  border: 1px solid #e2e8f0;
  transition: var(--lenses-transition);
}

.metric-card:hover {
  transform: translateY(-5px);
  border-color: rgba(0, 136, 204, 0.2);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.08);
}

.metric-icon {
  width: 50px;
  height: 50px;
  background: rgba(0, 210, 196, 0.1);
  color: #00b4a7;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: 15px;
}

.metric-card h4 {
  font-size: 16px;
  font-weight: 800;
  color: var(--lenses-primary);
  margin-bottom: 10px;
}

.metric-card p {
  font-size: 13px;
  color: var(--lenses-text-muted);
  line-height: 1.6;
  margin: 0;
}

/* ==========================================================================
   2. Lens Geometry Section
   ========================================================================== */
.geometry-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  margin-bottom: 50px;
}

.geometry-card {
  background-color: #f8fafc;
  border-radius: 24px;
  padding: 40px 30px;
  border: 1px solid #e2e8f0;
  position: relative;
  transition: var(--lenses-transition);
}

.geometry-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
}

.geometry-card.premium {
  border: 2px solid var(--lenses-secondary);
  background: linear-gradient(180deg, var(--lenses-white) 0%, rgba(0, 136, 204, 0.02) 100%);
}

.geometry-badge {
  position: absolute;
  top: 20px;
  left: 20px;
  background-color: #f1f5f9;
  color: var(--lenses-text-muted);
  padding: 4px 12px;
  border-radius: 50px;
  font-size: 11px;
  font-weight: 700;
}

.geometry-card.premium .geometry-badge {
  background-color: var(--lenses-secondary);
  color: var(--lenses-white);
}

.geometry-card h3 {
  font-size: 20px;
  font-weight: 800;
  color: var(--lenses-primary);
  margin-bottom: 18px;
  margin-top: 10px;
}

.geometry-card p {
  font-size: 14px;
  color: #475569;
  line-height: 1.7;
  text-align: justify;
  margin: 0;
}

.freeform-highlight {
  display: flex;
  background: linear-gradient(135deg, #101f3c 0%, #172a4e 100%);
  border-radius: 24px;
  padding: 50px;
  color: var(--lenses-white);
  align-items: center;
  gap: 40px;
  box-shadow: 0 15px 35px rgba(15, 23, 42, 0.15);
}

.freeform-content {
  flex: 1.5;
}

.freeform-content h3 {
  font-size: 24px;
  font-weight: 800;
  color: var(--lenses-accent);
  margin-bottom: 20px;
}

.freeform-content p {
  font-size: 15px;
  color: #f1f5f9;
  text-align: justify;
  line-height: 1.8;
  margin-bottom: 25px;
}

.freeform-benefits {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.freeform-benefits span {
  font-size: 14px;
  font-weight: 700;
  color: var(--lenses-white);
  display: flex;
  align-items: center;
  gap: 8px;
}

.freeform-benefits i {
  color: var(--lenses-accent);
}

.freeform-image {
  flex: 1;
}

.freeform-image img {
  width: 100%;
  height: auto;
  border-radius: 16px;
  border: 4px solid rgba(255, 255, 255, 0.05);
  box-shadow: 0 15px 30px rgba(0,0,0,0.3);
}

/* ==========================================================================
   3. Vision Types (انواع کاربری عدسی)
   ========================================================================== */
.vision-types-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px;
  align-items: stretch;
  margin-bottom: 60px;
}

@media (max-width: 1100px) {
  .vision-types-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px;
  }
}

@media (max-width: 700px) {
  .vision-types-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }
}

.vision-card {
  background-color: #f8fafc;
  border-radius: 20px;
  padding: 40px 25px;
  text-align: center;
  border: 1px solid #f1f5f9;
  transition: var(--lenses-transition);
}

.vision-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
  border-color: rgba(0, 136, 204, 0.2);
}

.vision-icon {
  width: 76px;
  height: 76px;
  background: rgba(0, 136, 204, 0.06);
  color: var(--lenses-secondary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 30px;
  margin: 0 auto 25px;
  transition: var(--lenses-transition);
}

.vision-card:hover .vision-icon {
  background: var(--lenses-secondary);
  color: var(--lenses-white);
  transform: rotateY(180deg);
}

.vision-card h3 {
  font-size: 18px;
  font-weight: 800;
  margin-bottom: 15px;
  color: var(--lenses-primary);
}

.vision-card p {
  font-size: 13px;
  color: var(--lenses-text-muted);
  line-height: 1.7;
  margin-bottom: 20px;
  height: 90px;
  overflow: hidden;
}

.vision-tags {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 6px;
}

.vision-tag {
  background-color: #f1f5f9;
  color: var(--lenses-text-muted);
  padding: 4px 10px;
  border-radius: 50px;
  font-size: 12px;
  font-weight: 600;
}

/* ==========================================================================
   4. Interactive Indexes (ضریب فشردگی‌ها)
   ========================================================================== */
.indexes-section {
  background-color: var(--lenses-white);
  border-radius: 24px;
  padding: 50px;
  box-shadow: var(--lenses-card-shadow);
  margin-bottom: 60px;
  border: 1px solid #f1f5f9;
}

.indexes-container {
  display: flex;
  gap: 40px;
  margin-top: 30px;
}

.indexes-tabs {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.index-tab-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  border-radius: 16px;
  background-color: #f8fafc;
  border: 2px solid #f1f5f9;
  cursor: pointer;
  text-align: right;
  transition: var(--lenses-transition);
}

.index-tab-btn:hover {
  background-color: #f1f5f9;
  border-color: #e2e8f0;
}

.index-tab-btn.active {
  background-color: rgba(0, 136, 204, 0.05);
  border-color: var(--lenses-secondary);
}

.index-tab-title {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.index-num {
  font-size: 18px;
  font-weight: 800;
  color: var(--lenses-primary);
}

.index-label {
  font-size: 13px;
  color: var(--lenses-text-muted);
}

.index-indicator {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid #cbd5e1;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--lenses-transition);
}

.index-tab-btn.active .index-indicator {
  border-color: var(--lenses-secondary);
  background-color: var(--lenses-secondary);
}

.index-tab-btn.active .index-indicator::after {
  content: '';
  width: 6px;
  height: 6px;
  background-color: var(--lenses-white);
  border-radius: 50%;
}

.indexes-content {
  flex: 1.5;
  background-color: #f8fafc;
  border-radius: 20px;
  padding: 40px;
  border: 1px solid #f1f5f9;
  position: relative;
  min-height: 420px;
}

.index-pane {
  display: none;
  animation: fadeIn 0.4s ease;
}

.index-pane.active {
  display: block;
}

.index-pane-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  border-bottom: 1px solid #e2e8f0;
  padding-bottom: 15px;
}

.index-pane-title h3 {
  font-size: 22px;
  font-weight: 800;
  color: var(--lenses-primary);
}

.index-pane-title span {
  font-size: 14px;
  color: var(--lenses-secondary);
  font-weight: 700;
}

.thickness-badge {
  background-color: var(--lenses-white);
  padding: 8px 16px;
  border-radius: 50px;
  font-size: 14px;
  font-weight: 700;
  color: var(--lenses-primary);
  border: 1px solid #e2e8f0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.thickness-badge i {
  color: #10b981;
}

.index-pane-body p {
  font-size: 15px;
  color: #475569;
  margin-bottom: 25px;
  text-align: justify;
}

.index-specs-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-bottom: 30px;
}

.spec-item {
  background-color: var(--lenses-white);
  padding: 15px;
  border-radius: 12px;
  border: 1px solid #e2e8f0;
}

.spec-label {
  font-size: 12px;
  color: var(--lenses-text-muted);
  display: block;
  margin-bottom: 4px;
}

.spec-value {
  font-size: 15px;
  font-weight: 700;
  color: var(--lenses-primary);
}

/* شبیه‌ساز ضخامت عدسی */
.thickness-simulator {
  margin-top: 25px;
  background-color: var(--lenses-white);
  padding: 20px;
  border-radius: 16px;
  border: 1px solid #e2e8f0;
}

.simulator-label {
  font-size: 13px;
  font-weight: 700;
  color: var(--lenses-primary);
  margin-bottom: 12px;
  display: block;
}

.simulator-bar-container {
  display: flex;
  align-items: center;
  gap: 20px;
}

.lens-profile-wrapper {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 60px;
  background-color: #f1f5f9;
  border-radius: 10px;
  position: relative;
  overflow: hidden;
}

/* شکل عدسی با ضخامت‌های مختلف */
.lens-profile-shape {
  height: 12px;
  background: linear-gradient(90deg, #94a3b8 0%, #cbd5e1 50%, #94a3b8 100%);
  border-radius: 3px;
  transition: width 0.5s ease, height 0.5s ease;
  position: relative;
}

/* ضخامت‌های اختصاصی */
.lens-profile-shape.index-150 { width: 90%; height: 28px; border-radius: 14px / 6px; }
.lens-profile-shape.index-157 { width: 90%; height: 20px; border-radius: 14px / 4px; }
.lens-profile-shape.index-160 { width: 90%; height: 14px; border-radius: 14px / 3px; }
.lens-profile-shape.index-167 { width: 90%; height: 9px; border-radius: 14px / 2px; }
.lens-profile-shape.index-174 { width: 90%; height: 5px; border-radius: 14px / 1px; }

.thickness-percent {
  font-size: 15px;
  font-weight: 800;
  color: var(--lenses-secondary);
  width: 80px;
  text-align: left;
}

/* ==========================================================================
   5. Ophthalmic Materials Section
   ========================================================================== */
.table-responsive {
  overflow-x: auto;
  background-color: var(--lenses-white);
  border-radius: 20px;
  border: 1px solid #e2e8f0;
  box-shadow: var(--lenses-card-shadow);
}

.lenses-table {
  width: 100%;
  border-collapse: collapse;
  text-align: right;
  font-size: 14px;
}

.lenses-table th {
  background-color: #f1f5f9;
  color: var(--lenses-primary);
  font-weight: 800;
  padding: 18px 20px;
  border-bottom: 2px solid #e2e8f0;
  white-space: nowrap;
}

.lenses-table td {
  padding: 16px 20px;
  border-bottom: 1px solid #e2e8f0;
  color: #334155;
}

.lenses-table tr:last-child td {
  border-bottom: none;
}

.lenses-table tr:hover td {
  background-color: #f8fafc;
}

/* ==========================================================================
   6. Coatings & Technologies
   ========================================================================== */
.coatings-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 25px;
  margin-bottom: 40px;
}

.coating-card {
  background-color: #f8fafc;
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid #f1f5f9;
  transition: var(--lenses-transition);
  display: flex;
  flex-direction: column;
}

.coating-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.08);
}

.coating-image-wrapper {
  width: 100%;
  height: 180px;
  overflow: hidden;
}

.coating-image-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--lenses-transition);
}

.coating-card:hover .coating-image-wrapper img {
  transform: scale(1.05);
}

.coating-header {
  padding: 30px 30px 15px;
  display: flex;
  align-items: center;
  gap: 15px;
}

.coating-icon-box {
  width: 54px;
  height: 54px;
  background-color: rgba(0, 210, 196, 0.08);
  color: #00b4a7;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  transition: var(--lenses-transition);
}

.coating-card:hover .coating-icon-box {
  background-color: var(--lenses-accent);
  color: var(--lenses-white);
}

.coating-header h3 {
  font-size: 18px;
  font-weight: 800;
  color: var(--lenses-primary);
  margin: 0;
}

.coating-body {
  padding: 0 30px 30px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.coating-body p {
  font-size: 14px;
  color: var(--lenses-text-muted);
  line-height: 1.7;
  margin-bottom: 20px;
  text-align: justify;
}

.coating-benefits {
  list-style: none;
  padding: 0;
  margin: auto 0 0 0;
}

.coating-benefits li {
  font-size: 13px;
  color: var(--lenses-text-dark);
  font-weight: 600;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.coating-benefits li i {
  color: var(--lenses-secondary);
  font-size: 14px;
}

.coating-card.billing-card {
  background: linear-gradient(135deg, rgba(0,136,204,0.03) 0%, rgba(0,210,196,0.03) 100%);
  border: 1px dashed rgba(0, 136, 204, 0.3);
}

.coating-card.billing-card .coating-icon-box {
  background-color: rgba(0, 136, 204, 0.1);
  color: var(--lenses-secondary);
}

.coating-card.billing-card:hover .coating-icon-box {
  background-color: var(--lenses-secondary);
  color: var(--lenses-white);
}

.comparison-box {
  display: flex;
  background-color: #f1f5f9;
  border-radius: 20px;
  padding: 30px;
  gap: 20px;
  margin-top: 30px;
  border: 1px solid #e2e8f0;
}

.comparison-icon {
  font-size: 24px;
  color: var(--lenses-secondary);
}

.comparison-text h4 {
  font-size: 16px;
  font-weight: 800;
  color: var(--lenses-primary);
  margin-bottom: 8px;
}

.comparison-text p {
  font-size: 14px;
  color: #475569;
  line-height: 1.8;
  margin: 0;
  text-align: justify;
}

/* ==========================================================================
   7. Lenses Brands
   ========================================================================== */
.brands-list-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px;
  align-items: stretch;
}

@media (max-width: 1100px) {
  .brands-list-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px;
  }
}

@media (max-width: 700px) {
  .brands-list-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }
}

.brand-item-card {
  background-color: #f8fafc;
  border-radius: 20px;
  padding: 30px 25px;
  border: 1px solid #e2e8f0;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: var(--lenses-transition);
}

.brand-item-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.08);
  border-color: rgba(0, 136, 204, 0.2);
}

.brand-badge-vip, .brand-badge-mid, .brand-badge-eco {
  font-size: 10px;
  font-weight: 800;
  padding: 4px 10px;
  border-radius: 50px;
  align-self: flex-start;
  margin-bottom: 15px;
}

.brand-badge-vip { background-color: #fef3c7; color: #d97706; }
.brand-badge-mid { background-color: #dbeafe; color: #1d4ed8; }
.brand-badge-eco { background-color: #d1fae5; color: #065f46; }

.brand-logo-name {
  font-size: 18px;
  font-weight: 800;
  color: var(--lenses-primary);
  margin-bottom: 12px;
}

.brand-item-card p {
  font-size: 13px;
  color: var(--lenses-text-muted);
  line-height: 1.7;
  text-align: justify;
  margin-bottom: 20px;
  flex: 1;
}

.brand-search-link {
  font-size: 13px;
  font-weight: 700;
  color: var(--lenses-secondary);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: var(--lenses-transition);
}

.brand-search-link:hover {
  color: var(--lenses-primary);
  transform: translateX(-4px);
}

/* ==========================================================================
   8. Buying Guide Stepper
   ========================================================================== */
.stepper-wrapper {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  margin-top: 30px;
  position: relative;
}

.step-card {
  background-color: #f8fafc;
  border-radius: 20px;
  padding: 30px 20px;
  border: 1px solid #e2e8f0;
  text-align: center;
  position: relative;
}

.step-num {
  width: 40px;
  height: 40px;
  background-color: var(--lenses-secondary);
  color: var(--lenses-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 800;
  margin: 0 auto 20px;
  box-shadow: 0 4px 10px rgba(0, 136, 204, 0.2);
}

.step-card h4 {
  font-size: 15px;
  font-weight: 800;
  color: var(--lenses-primary);
  margin-bottom: 10px;
}

.step-card p {
  font-size: 12px;
  color: var(--lenses-text-muted);
  line-height: 1.6;
  margin-bottom: 15px;
}

.step-link {
  font-size: 11px;
  font-weight: 700;
  color: var(--lenses-secondary);
  text-decoration: none;
}

.step-link:hover {
  text-decoration: underline;
}

/* ==========================================================================
   9. Optometrist Corner
   ========================================================================== */
.optometrist-corner {
  background-color: var(--lenses-white);
  border-radius: 24px;
  padding: 50px;
  border: 1px solid #e2e8f0;
  box-shadow: var(--lenses-card-shadow);
}

.opt-card-inner {
  display: flex;
  gap: 40px;
  align-items: flex-start;
}

.opt-avatar {
  flex: 0.8;
  text-align: center;
}

.opt-avatar img {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  border: 5px solid #f1f5f9;
  box-shadow: 0 10px 25px rgba(0,0,0,0.08);
}

.opt-content {
  flex: 1;
  width: 100%;
}

.opt-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--lenses-secondary);
  font-weight: 700;
  font-size: 14px;
  margin-bottom: 10px;
}

.opt-content h3 {
  font-size: 22px;
  font-weight: 800;
  color: var(--lenses-primary);
  margin-bottom: 15px;
}

.opt-content > p {
  font-size: 15px;
  color: #475569;
  text-align: justify;
  margin-bottom: 25px;
}

.opt-tips {
  display: flex;
  flex-direction: column;
  gap: 15px;
  margin-bottom: 30px;
}

.opt-tip-item {
  font-size: 14px;
  color: #334155;
  padding: 15px 20px;
  background-color: #f8fafc;
  border-right: 4px solid var(--lenses-secondary);
  border-radius: 4px 12px 12px 4px;
  text-align: justify;
}

.opt-booking-btn {
  display: inline-flex;
  align-items: center;
  background: var(--lenses-primary);
  color: var(--lenses-white);
  padding: 12px 24px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 14px;
  text-decoration: none;
  box-shadow: 0 4px 10px rgba(16, 31, 60, 0.2);
  transition: var(--lenses-transition);
}

.opt-booking-btn:hover {
  background-color: var(--lenses-secondary);
  color: var(--lenses-white);
  transform: translateY(-2px);
}

/* ==========================================================================
   10. Care & Cleaning Section
   ========================================================================== */
.care-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}

.care-card {
  background-color: #f8fafc;
  border-radius: 24px;
  padding: 40px;
  border: 1px solid #e2e8f0;
}

.care-card h4 {
  font-size: 18px;
  font-weight: 800;
  margin-bottom: 25px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.care-card.dos h4 { color: #059669; }
.care-card.donts h4 { color: #dc2626; }

.care-card ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.care-card li {
  font-size: 14px;
  color: #334155;
  position: relative;
  padding-right: 25px;
  text-align: justify;
}

.care-card li::before {
  content: '';
  position: absolute;
  right: 0;
  top: 10px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.care-card.dos li::before { background-color: #059669; }
.care-card.donts li::before { background-color: #dc2626; }

/* ==========================================================================
   FAQ Section (سوالات متداول)
   ========================================================================== */
.faq-section {
  background-color: var(--lenses-white);
  border-radius: 24px;
  padding: 50px;
  box-shadow: var(--lenses-card-shadow);
  border: 1px solid #f1f5f9;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 15px;
  margin-top: 30px;
}

.faq-item {
  border: 1px solid #e2e8f0;
  border-radius: 16px;
  overflow: hidden;
  transition: var(--lenses-transition);
}

.faq-item:hover {
  border-color: #cbd5e1;
}

.faq-item.active {
  border-color: var(--lenses-secondary);
  box-shadow: 0 4px 15px rgba(0, 136, 204, 0.04);
}

.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 22px 30px;
  text-align: right;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  gap: 20px;
}

.faq-question h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--lenses-primary);
  margin: 0;
  transition: var(--lenses-transition);
}

.faq-item.active .faq-question h3 {
  color: var(--lenses-secondary);
}

.faq-chevron {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background-color: #f1f5f9;
  color: var(--lenses-text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  transition: var(--lenses-transition);
}

.faq-item.active .faq-chevron {
  transform: rotate(180deg);
  background-color: var(--lenses-secondary);
  color: var(--lenses-white);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  background-color: #f8fafc;
}

.faq-answer-inner {
  padding: 0 30px 25px;
  font-size: 14px;
  color: #475569;
  line-height: 1.8;
  border-top: 1px solid #f1f5f9;
  text-align: justify;
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */
@media (max-width: 1200px) {
  .brands-list-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .stepper-wrapper {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 1024px) {
  .geometry-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .vision-types-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .coatings-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .physics-container {
    flex-direction: column;
  }
  .physics-image {
    width: 100%;
  }
  .physics-content {
    width: 100%;
  }
  .freeform-highlight {
    flex-direction: column;
    padding: 35px;
  }
}

@media (max-width: 768px) {
  .lenses-hero-inner {
    flex-direction: column-reverse;
    text-align: center;
    padding: 20px;
  }
  
  .lenses-hero {
    padding: 30px;
  }
  
  .lenses-hero-content {
    max-width: 100%;
  }

  .lenses-hero-title {
    font-size: 26px;
  }
  
  .lenses-hero-actions {
    justify-content: center;
  }

  .geometry-grid {
    grid-template-columns: 1fr;
  }

  .vision-types-grid {
    grid-template-columns: 1fr;
  }

  .coatings-grid {
    grid-template-columns: 1fr;
  }

  .indexes-container {
    flex-direction: column;
  }
  
  .indexes-content {
    min-height: auto;
    padding: 25px;
  }
  
  .physics-metrics-grid {
    grid-template-columns: 1fr;
  }

  .brands-list-grid {
    grid-template-columns: 1fr;
  }

  .stepper-wrapper {
    grid-template-columns: 1fr;
  }

  .opt-card-inner {
    flex-direction: column;
    align-items: center;
    gap: 20px;
  }

  .care-grid {
    grid-template-columns: 1fr;
  }
  
  .faq-section {
    padding: 30px 20px;
  }
  
  .faq-question {
    padding: 18px 20px;
  }
  
  .faq-answer-inner {
    padding: 0 20px 20px;
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ==========================================================================
   Lens Advisor Section (بخش مشاور هوشمند انتخاب عدسی)
   ========================================================================== */
.lens-advisor-section {
  margin: 50px 0;
}

.advisor-card {
  background-color: var(--lenses-white);
  border-radius: 24px;
  padding: 40px;
  box-shadow: var(--lenses-card-shadow);
  border: 1px solid #e2e8f0;
}

.advisor-progress-bar {
  background-color: #f1f5f9;
  height: 28px;
  border-radius: 50px;
  position: relative;
  overflow: hidden;
  margin-bottom: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.progress-fill {
  position: absolute;
  top: 0;
  right: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--lenses-secondary), var(--lenses-accent));
  transition: width 0.4s ease;
  z-index: 1;
}

.progress-step-text {
  position: relative;
  z-index: 2;
  font-size: 13px;
  font-weight: 800;
  color: var(--lenses-primary);
  text-shadow: 0 1px 2px rgba(255, 255, 255, 0.8);
}

.advisor-step {
  display: none;
  animation: fadeIn 0.4s ease;
}

.advisor-step.active {
  display: block;
}

.step-title {
  font-size: 20px;
  font-weight: 800;
  color: var(--lenses-primary);
  margin-bottom: 25px;
}

.options-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  margin-bottom: 30px;
}

.option-card {
  position: relative;
  display: block;
  background-color: var(--lenses-white);
  border: 2px solid #e2e8f0;
  border-radius: 20px;
  padding: 30px 24px;
  cursor: pointer;
  transition: var(--lenses-transition);
}

.option-card input[type="radio"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.option-card:hover {
  border-color: var(--lenses-secondary);
  transform: translateY(-3px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.03);
}

.option-card:has(input[type="radio"]:checked) {
  border-color: var(--lenses-secondary);
  background: linear-gradient(180deg, var(--lenses-white) 0%, rgba(0, 136, 204, 0.03) 100%);
  box-shadow: 0 12px 25px rgba(0, 136, 204, 0.08);
}

.option-icon {
  width: 60px;
  height: 60px;
  background-color: #f8fafc;
  color: var(--lenses-primary);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 20px;
  transition: var(--lenses-transition);
}

.option-card:has(input[type="radio"]:checked) .option-icon {
  background-color: var(--lenses-secondary);
  color: var(--lenses-white);
}

.option-title {
  display: block;
  font-size: 16px;
  font-weight: 800;
  color: var(--lenses-primary);
  margin-bottom: 10px;
}

.option-desc {
  display: block;
  font-size: 13px;
  color: var(--lenses-text-muted);
  line-height: 1.6;
}

.advisor-nav {
  display: flex;
  justify-content: space-between;
  border-top: 1px solid #e2e8f0;
  padding-top: 25px;
  margin-top: 10px;
}

.advisor-prev-btn, .advisor-next-btn, .advisor-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 24px;
  border-radius: 50px;
  font-weight: 700;
  cursor: pointer;
  text-decoration: none;
  transition: var(--lenses-transition);
}

.advisor-prev-btn {
  background-color: #f1f5f9;
  color: var(--lenses-text-dark);
  border: 1px solid #e2e8f0;
}

.advisor-prev-btn:hover:not(.disabled) {
  background-color: #e2e8f0;
}

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

.advisor-next-btn {
  background: linear-gradient(90deg, var(--lenses-secondary), #00a2f3);
  color: var(--lenses-white);
  border: none;
  box-shadow: 0 4px 15px rgba(0, 136, 204, 0.2);
}

.advisor-next-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 136, 204, 0.3);
}

/* کارت نتایج مشاور */
.result-container {
  background-color: #f8fafc;
  border-radius: 20px;
  border: 1px solid #e2e8f0;
  padding: 40px;
}

.result-header {
  text-align: center;
  margin-bottom: 30px;
}

.result-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: rgba(0, 210, 196, 0.1);
  color: #0f766e;
  padding: 6px 16px;
  border-radius: 50px;
  font-size: 13px;
  font-weight: 800;
  margin-bottom: 12px;
}

.result-header h3 {
  font-size: 24px;
  font-weight: 800;
  color: var(--lenses-primary);
}

.result-body-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 30px;
  margin-bottom: 35px;
}

.result-details {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.result-item {
  background-color: var(--lenses-white);
  padding: 20px;
  border-radius: 16px;
  border: 1px solid #e2e8f0;
}

.result-item h5 {
  font-size: 14px;
  font-weight: 800;
  color: var(--lenses-text-muted);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.result-item p {
  font-size: 15px;
  font-weight: 800;
  color: var(--lenses-primary);
  margin: 0;
}

.result-summary-box {
  background: linear-gradient(135deg, #101f3c 0%, #172a4e 100%);
  color: var(--lenses-white);
  border-radius: 16px;
  padding: 30px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  justify-content: center;
}

.summary-icon-box {
  width: 64px;
  height: 64px;
  background-color: rgba(0, 210, 196, 0.2);
  color: var(--lenses-accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  margin-bottom: 20px;
}

.result-summary-box h4 {
  font-size: 18px;
  font-weight: 800;
  margin-bottom: 12px;
  color: var(--lenses-accent);
}

.result-summary-box p {
  font-size: 13px;
  line-height: 1.8;
  color: #f1f5f9;
  margin: 0;
  text-align: justify;
}

.result-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  border-top: 1px solid #e2e8f0;
  padding-top: 30px;
}

.result-subtitle {
  font-size: 14px;
  color: var(--lenses-text-muted);
  margin-top: 6px;
  margin-bottom: 0;
}

/* ==========================================================================
   Recommended Products Section (محصولات پیشنهادی مشاور عدسی)
   ========================================================================== */
.rec-products-section {
  margin-top: 35px;
  margin-bottom: 30px;
  background: #ffffff;
  border-radius: 20px;
  padding: 30px 25px;
  border: 1px solid #e2e8f0;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
}

.rec-products-header {
  text-align: center;
  margin-bottom: 25px;
}

.rec-products-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 136, 204, 0.1);
  color: var(--lenses-secondary);
  font-size: 13px;
  font-weight: 800;
  padding: 6px 16px;
  border-radius: 50px;
  margin-bottom: 10px;
}

.rec-products-title {
  font-size: 20px;
  font-weight: 800;
  color: var(--lenses-primary);
  margin-bottom: 8px;
}

.rec-products-desc {
  font-size: 14px;
  color: var(--lenses-text-muted);
  margin: 0;
}

.rec-products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-top: 25px;
}

.advisor-product-card {
  background: #ffffff;
  border-radius: 18px;
  border: 2px solid #e2e8f0;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.04);
}

.advisor-product-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.12);
}

/* Badge Styling */
.card-badge-gold {
  border-color: #f59e0b;
}
.card-badge-gold .ap-badge-wrap .ap-match-badge {
  background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
  color: #ffffff;
}

.card-badge-premium {
  border-color: #8b5cf6;
}
.card-badge-premium .ap-badge-wrap .ap-match-badge {
  background: linear-gradient(135deg, #8b5cf6 0%, #6d28d9 100%);
  color: #ffffff;
}

.card-badge-secure {
  border-color: #ef4444;
}
.card-badge-secure .ap-badge-wrap .ap-match-badge {
  background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
  color: #ffffff;
}

.card-badge-eco {
  border-color: #10b981;
}
.card-badge-eco .ap-badge-wrap .ap-match-badge {
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  color: #ffffff;
}

.card-badge-custom {
  border-color: #0284c7;
}
.card-badge-custom .ap-badge-wrap .ap-match-badge {
  background: linear-gradient(135deg, #0284c7 0%, #0369a1 100%);
  color: #ffffff;
}

.ap-badge-wrap {
  position: absolute;
  top: 12px;
  right: 12px;
  z-index: 5;
}

.ap-match-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11.5px;
  font-weight: 800;
  padding: 5px 12px;
  border-radius: 50px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.ap-card-top {
  position: relative;
  background: #f8fafc;
  padding: 20px 18px 14px;
  border-bottom: 1px solid #f1f5f9;
}

.ap-img-box {
  position: relative;
  width: 100%;
  height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 12px;
}

.ap-img-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
}

.ap-thumb {
  max-width: 80%;
  max-height: 140px;
  object-fit: contain;
  transition: transform 0.3s ease;
}

.advisor-product-card:hover .ap-thumb {
  transform: scale(1.05);
}

.ap-brand-logo {
  position: absolute;
  bottom: 4px;
  left: 4px;
  max-height: 26px;
  max-width: 85px;
  background: #ffffff;
  padding: 3px 8px;
  border-radius: 6px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.08);
  object-fit: contain;
}

.ap-meta-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.ap-tag {
  font-size: 11px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 20px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.tag-index {
  background: #e0f2fe;
  color: #0369a1;
}

.tag-type {
  background: #f1f5f9;
  color: #334155;
}

.ap-card-body {
  padding: 20px 18px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.ap-title {
  font-size: 15.5px;
  font-weight: 800;
  line-height: 1.5;
  margin-bottom: 4px;
}

.ap-title a {
  color: var(--lenses-primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

.ap-title a:hover {
  color: var(--lenses-secondary);
}

.ap-title-en {
  font-size: 12px;
  color: #64748b;
  font-weight: 600;
  margin-bottom: 10px;
}

.ap-brand-info {
  font-size: 12.5px;
  color: #475569;
  margin-bottom: 12px;
  padding-bottom: 10px;
  border-bottom: 1px dashed #e2e8f0;
}

.ap-brand-info strong {
  color: var(--lenses-primary);
}

.ap-highlights {
  list-style: none;
  padding: 0;
  margin: 0 0 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.ap-highlights li {
  font-size: 12.5px;
  color: #475569;
  display: flex;
  align-items: flex-start;
  gap: 8px;
  line-height: 1.5;
}

.ap-highlights li i {
  color: #10b981;
  font-size: 13.5px;
  margin-top: 3px;
  flex-shrink: 0;
}

.ap-price-box {
  background: #f8fafc;
  border-radius: 12px;
  padding: 12px 14px;
  margin-top: auto;
  border: 1px solid #e2e8f0;
}

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

.ap-price-label {
  font-size: 12px;
  color: var(--lenses-text-muted);
  font-weight: 600;
}

.ap-price-val {
  font-size: 15px;
  font-weight: 800;
  color: #0f766e;
}

.ap-price-single-text {
  font-size: 11px;
  color: #94a3b8;
  margin-top: 4px;
  text-align: left;
}

.ap-card-actions {
  padding: 0 18px 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.ap-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 16px;
  border-radius: 10px;
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  transition: var(--lenses-transition);
}

.ap-btn-primary {
  background: #0f172a;
  color: #ffffff;
}

.ap-btn-primary:hover {
  background: var(--lenses-secondary);
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 136, 204, 0.25);
}

.ap-sub-actions {
  display: flex;
  gap: 8px;
}

.ap-btn-wizard {
  flex: 1;
  background: #f1f5f9;
  color: var(--lenses-primary);
  border: 1px solid #e2e8f0;
}

.ap-btn-wizard:hover {
  background: #e2e8f0;
  color: var(--lenses-primary);
}

.ap-btn-whatsapp {
  flex: 1;
  background: #ecfdf5;
  color: #047857;
  border: 1px solid #a7f3d0;
}

.ap-btn-whatsapp:hover {
  background: #10b981;
  color: #ffffff;
}

.result-actions-links {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.advisor-wizard-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 50px;
  font-weight: 700;
  text-decoration: none;
  background: #0f172a;
  color: var(--lenses-white);
  transition: var(--lenses-transition);
}

.advisor-wizard-btn:hover {
  background: var(--lenses-secondary);
  color: var(--lenses-white);
  transform: translateY(-2px);
}

.advisor-cta-btn {
  background: linear-gradient(90deg, #10b981, #059669);
  color: var(--lenses-white);
  box-shadow: 0 4px 15px rgba(16, 185, 129, 0.2);
  border: none;
}

.advisor-cta-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(16, 185, 129, 0.3);
  color: var(--lenses-white);
}

/* ==========================================================================
   Specialized Lens Showcase (دسته‌بندی‌های تخصصی عدسی)
   ========================================================================== */
.specialized-lenses-showcase {
  background-color: var(--lenses-white);
  border-radius: 24px;
  padding: 40px;
  border: 1px solid #e2e8f0;
  margin-top: 40px;
}

.specialized-title {
  font-size: 20px;
  font-weight: 800;
  color: var(--lenses-primary);
  margin-bottom: 30px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.specialized-title i {
  color: var(--lenses-secondary);
}

.specialized-grid {
  display: flex;
  flex-direction: column;
  gap: 25px;
}

.specialized-card {
  display: flex;
  gap: 25px;
  background-color: #f8fafc;
  border: 1px solid #f1f5f9;
  border-radius: 20px;
  padding: 30px;
  transition: var(--lenses-transition);
}

.specialized-card:hover {
  transform: translateX(-5px);
  border-color: rgba(0, 136, 204, 0.15);
  box-shadow: 0 10px 25px rgba(0,0,0,0.02);
}

.specialized-icon-wrapper {
  width: 60px;
  height: 60px;
  background-color: var(--lenses-white);
  border: 1px solid #e2e8f0;
  color: var(--lenses-secondary);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  flex-shrink: 0;
}

.specialized-info h4 {
  font-size: 17px;
  font-weight: 800;
  color: var(--lenses-primary);
  margin-bottom: 10px;
}

.specialized-info p {
  font-size: 14px;
  line-height: 1.8;
  color: #475569;
  margin: 0;
  text-align: justify;
}

/* ==========================================================================
   Coatings Simulator Section (شبیه‌ساز پوشش‌های عدسی)
   ========================================================================== */
.coatings-simulator-wrapper {
  background-color: var(--lenses-white);
  border-radius: 24px;
  border: 1px solid #e2e8f0;
  padding: 40px;
  margin: 20px 0 50px 0;
  box-shadow: var(--lenses-card-shadow);
}

.simulator-header {
  margin-bottom: 30px;
}

.simulator-header h3 {
  font-size: 20px;
  font-weight: 800;
  color: var(--lenses-primary);
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.simulator-header h3 i {
  color: var(--lenses-secondary);
}

.simulator-header p {
  font-size: 14px;
  color: var(--lenses-text-muted);
  margin: 0;
}

.simulator-main {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 40px;
  align-items: center;
}

/* پنجره شبیه‌ساز */
.simulator-viewport {
  position: relative;
  height: 380px;
  background-color: #000;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
  border: 4px solid #f1f5f9;
}

.simulator-scene {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  opacity: 0;
  z-index: 1;
  transition: opacity 0.5s ease;
}

.simulator-scene.active {
  opacity: 1;
}

/* رانندگی در شب */
.scene-night {
  background: linear-gradient(135deg, #070b19 0%, #111827 100%);
}

.scene-night::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 10%;
  width: 80%;
  height: 120px;
  background: linear-gradient(0deg, rgba(245, 158, 11, 0.05) 0%, transparent 100%);
  clip-path: polygon(20% 0%, 80% 0%, 100% 100%, 0% 100%);
}

.scene-glare-overlay {
  position: absolute;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 30% 40%, rgba(255, 255, 255, 0.6) 0%, rgba(255, 255, 255, 0) 15%),
              radial-gradient(circle at 70% 35%, rgba(255, 255, 255, 0.5) 0%, rgba(255, 255, 255, 0) 12%);
  pointer-events: none;
}

.scene-glare-overlay::after {
  content: '';
  position: absolute;
  top: 40%;
  left: 20%;
  width: 80px;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.8), transparent);
  filter: blur(1px);
  transform: rotate(-15deg);
}

.scene-rain-overlay {
  position: absolute;
  width: 100%;
  height: 100%;
  background: repeating-linear-gradient(115deg, rgba(255, 255, 255, 0) 0px, rgba(255, 255, 255, 0) 8px, rgba(255, 255, 255, 0.05) 9px, rgba(255, 255, 255, 0) 10px);
  pointer-events: none;
}

/* دفتر کار */
.scene-office {
  background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
}

.scene-office::before {
  content: '';
  position: absolute;
  top: 25%;
  left: 20%;
  width: 60%;
  height: 50%;
  background: linear-gradient(185deg, #38bdf8 0%, #0369a1 100%);
  border-radius: 12px;
  box-shadow: 0 0 40px rgba(56, 189, 248, 0.15);
}

.scene-blue-glow {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 50% 50%, rgba(14, 165, 233, 0.25) 0%, transparent 60%);
  mix-blend-mode: screen;
  pointer-events: none;
}

/* آفتابی */
.scene-sun {
  background: linear-gradient(180deg, #38bdf8 0%, #bae6fd 60%, #e0f2fe 100%);
}

.scene-sun::before {
  content: '';
  position: absolute;
  bottom: 0;
  width: 100%;
  height: 140px;
  background: linear-gradient(0deg, #cbd5e1 0%, #94a3b8 100%);
}

.scene-sun-glare {
  position: absolute;
  top: 20px;
  left: 20%;
  width: 150px;
  height: 150px;
  background: radial-gradient(circle, rgba(255,255,255,1) 0%, rgba(255,255,255,0.4) 30%, rgba(255,255,255,0) 70%);
  pointer-events: none;
}

/* دایره عدسی عینک */
.simulator-lens {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 210px;
  height: 210px;
  border-radius: 50%;
  z-index: 5;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5), inset 0 2px 4px rgba(255,255,255,0.2);
}

.lens-view {
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  overflow: hidden;
  z-index: 2;
}

/* شبیه‌سازی ویژگی‌های نوری */
.lens-glare {
  position: absolute;
  width: 250px;
  height: 250px;
  top: -20px;
  left: -20px;
  background: radial-gradient(circle at 30% 40%, rgba(255, 255, 255, 0.75) 0%, rgba(255, 255, 255, 0) 15%),
              radial-gradient(circle at 70% 35%, rgba(255, 255, 255, 0.65) 0%, rgba(255, 255, 255, 0) 12%);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.lens-glare.active {
  opacity: 1;
}

.lens-glare::after {
  content: '';
  position: absolute;
  top: 40%;
  left: 20%;
  width: 80px;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.9), transparent);
  transform: rotate(-15deg);
}

.lens-blue-filter {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 15% 15%, rgba(59, 130, 246, 0.3) 0%, transparent 60%);
  mix-blend-mode: screen;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.lens-blue-filter.active {
  opacity: 1;
}

.lens-darkening {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(67, 56, 43, 0.75); /* فتوکرومیک قهوه‌ای */
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.lens-darkening.active {
  opacity: 1;
}

.lens-water-beads {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: radial-gradient(circle at 30% 20%, rgba(255,255,255,0.4) 2px, transparent 4px),
                    radial-gradient(circle at 75% 65%, rgba(255,255,255,0.4) 3px, transparent 6px),
                    radial-gradient(circle at 50% 80%, rgba(255,255,255,0.4) 2px, transparent 4px);
  pointer-events: none;
  opacity: 1;
  transition: opacity 0.4s ease, transform 0.5s ease;
}

.lens-water-beads.active {
  opacity: 0;
  transform: translateY(30px);
}

.lens-border {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  border: 4px solid rgba(255, 255, 255, 0.6);
  z-index: 10;
  pointer-events: none;
}

.lens-reflection-specular {
  position: absolute;
  top: 10%;
  left: 10%;
  width: 80%;
  height: 80%;
  background: linear-gradient(135deg, rgba(255,255,255,0.15) 0%, transparent 40%, transparent 100%);
  border-radius: 50%;
  z-index: 8;
  pointer-events: none;
}

.viewport-label {
  position: absolute;
  background-color: rgba(15, 23, 42, 0.85);
  color: var(--lenses-white);
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 700;
  z-index: 8;
}

.viewport-label.before {
  top: 15px;
  right: 15px;
}

.viewport-label.inside {
  bottom: 15px;
  left: 15px;
  border: 1px solid rgba(0, 210, 196, 0.3);
  color: var(--lenses-accent);
}

/* کنترل‌ها */
.simulator-controls {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.controls-title {
  font-size: 16px;
  font-weight: 800;
  color: var(--lenses-primary);
  margin-bottom: 5px;
}

.sim-toggle-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  background-color: #f8fafc;
  border: 2px solid #f1f5f9;
  padding: 16px 20px;
  border-radius: 16px;
  cursor: pointer;
  text-align: right;
  transition: var(--lenses-transition);
}

.sim-toggle-btn:hover {
  background-color: #f1f5f9;
  border-color: #e2e8f0;
}

.sim-toggle-btn.active {
  border-color: var(--lenses-secondary);
  background-color: rgba(0, 136, 204, 0.03);
}

.toggle-icon {
  width: 44px;
  height: 44px;
  background-color: var(--lenses-white);
  border: 1px solid #e2e8f0;
  color: var(--lenses-text-muted);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
  margin-left: 15px;
  transition: var(--lenses-transition);
}

.sim-toggle-btn.active .toggle-icon {
  background-color: var(--lenses-secondary);
  color: var(--lenses-white);
  border-color: var(--lenses-secondary);
}

.toggle-text {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.toggle-name {
  font-size: 14px;
  font-weight: 800;
  color: var(--lenses-primary);
}

.toggle-status {
  font-size: 11px;
  color: var(--lenses-text-muted);
}

.sim-toggle-btn.active .toggle-status {
  color: var(--lenses-secondary);
  font-weight: 700;
}

.toggle-switch {
  width: 44px;
  height: 24px;
  background-color: #cbd5e1;
  border-radius: 50px;
  position: relative;
  transition: var(--lenses-transition);
}

.toggle-switch::after {
  content: '';
  position: absolute;
  top: 3px;
  right: 3px;
  width: 18px;
  height: 18px;
  background-color: var(--lenses-white);
  border-radius: 50%;
  transition: var(--lenses-transition);
}

.sim-toggle-btn.active .toggle-switch {
  background-color: #10b981;
}

.sim-toggle-btn.active .toggle-switch::after {
  transform: translateX(-20px);
}

/* کلید انتخاب محیط */
.sim-env-switch {
  margin-top: 15px;
  border-top: 1px solid #e2e8f0;
  padding-top: 20px;
}

.env-label {
  display: block;
  font-size: 13px;
  font-weight: 700;
  color: var(--lenses-primary);
  margin-bottom: 10px;
}

.env-buttons {
  display: flex;
  gap: 10px;
}

.env-btn {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  background-color: #f1f5f9;
  border: 1px solid #e2e8f0;
  padding: 10px;
  border-radius: 50px;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  color: var(--lenses-text-dark);
  transition: var(--lenses-transition);
}

.env-btn:hover {
  background-color: #e2e8f0;
}

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

/* ==========================================================================
   Brands Comparison Matrix (ماتریس مقایسه برندها)
   ========================================================================== */
.brands-matrix-wrapper {
  margin: 50px 0;
  background-color: var(--lenses-white);
  padding: 40px;
  border-radius: 24px;
  border: 1px solid #e2e8f0;
  box-shadow: var(--lenses-card-shadow);
}

.matrix-title {
  font-size: 20px;
  font-weight: 800;
  color: var(--lenses-primary);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.matrix-title i {
  color: var(--lenses-secondary);
}

.matrix-desc {
  font-size: 14px;
  color: var(--lenses-text-muted);
  margin-bottom: 25px;
}

.matrix-table {
  width: 100%;
  border-collapse: collapse;
  text-align: right;
  font-size: 13.5px;
}

.matrix-table th {
  background-color: #f8fafc;
  color: var(--lenses-primary);
  font-weight: 800;
  padding: 18px 15px;
  border-bottom: 2px solid #e2e8f0;
  white-space: nowrap;
}

.matrix-table td {
  padding: 16px 15px;
  border-bottom: 1px solid #e2e8f0;
  color: #475569;
}

.matrix-table tr:hover td {
  background-color: rgba(0, 136, 204, 0.02);
}

.matrix-table tr:last-child td {
  border-bottom: none;
}

/* ==========================================================================
   Lens Thickness Simulator Section (شبیه‌ساز ضخامت عدسی)
   ========================================================================== */
.thickness-simulator-section {
  background-color: var(--lenses-white);
  border-radius: 24px;
  border: 1px solid #e2e8f0;
  padding: 40px;
  margin: 50px 0;
  box-shadow: var(--lenses-card-shadow);
}

.integrated-sim-controls {
  background-color: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 20px;
  padding: 25px;
  margin-bottom: 30px;
}

.prescription-inputs-panel {
  width: 100%;
}

.inputs-title {
  font-size: 16px;
  font-weight: 800;
  color: var(--lenses-primary);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.inputs-title i {
  color: var(--lenses-secondary);
}

.inputs-row {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 25px;
}

.input-control-item {
  display: flex;
  flex-direction: column;
}

.control-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.control-label {
  font-size: 13px;
  font-weight: 700;
  color: var(--lenses-primary);
}

.control-val {
  font-size: 13px;
  font-weight: 800;
  background-color: var(--lenses-primary);
  color: var(--lenses-white);
  padding: 3px 10px;
  border-radius: 6px;
  direction: ltr;
}

.sim-slider {
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: #cbd5e1;
  outline: none;
  margin: 12px 0 8px 0;
  accent-color: var(--lenses-secondary);
  cursor: pointer;
}

.quick-presets {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 4px;
}

.preset-btn {
  font-size: 10px;
  font-weight: 700;
  color: var(--lenses-text-muted);
  background-color: var(--lenses-white);
  border: 1px solid #cbd5e1;
  padding: 4px 10px;
  border-radius: 20px;
  cursor: pointer;
  transition: var(--lenses-transition);
}

.preset-btn:hover {
  background-color: #f1f5f9;
  border-color: var(--lenses-secondary);
  color: var(--lenses-secondary);
}

/* 5-Column Grid */
.lens-compare-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  margin-top: 30px;
}

/* Lens Index Card */
.lens-index-card {
  background-color: var(--lenses-white);
  border: 1px solid #e2e8f0;
  border-radius: 20px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  position: relative;
}

.lens-index-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 20px -5px rgba(0, 0, 0, 0.1), 0 8px 8px -5px rgba(0, 0, 0, 0.04);
  border-color: var(--lenses-secondary);
}

.lens-index-card.premium {
  border: 2px solid var(--lenses-accent);
  background: linear-gradient(180deg, var(--lenses-white) 0%, rgba(0, 210, 196, 0.02) 100%);
}

.lens-index-card.premium::before {
  content: 'پیشنهاد صدف';
  position: absolute;
  top: -12px;
  left: 20px;
  background-color: var(--lenses-accent);
  color: var(--lenses-primary);
  font-size: 11px;
  font-weight: 800;
  padding: 2px 10px;
  border-radius: 20px;
  box-shadow: 0 2px 6px rgba(0, 210, 196, 0.3);
}

.card-header-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 15px;
  border-bottom: 1px solid #f1f5f9;
  padding-bottom: 12px;
}

.index-badge {
  background-color: var(--lenses-primary);
  color: var(--lenses-white);
  font-size: 13px;
  font-weight: 800;
  padding: 3px 8px;
  border-radius: 6px;
  direction: ltr;
}

.lens-index-card.premium .index-badge {
  background-color: var(--lenses-accent);
  color: var(--lenses-primary);
}

.card-header-bar h4 {
  font-size: 14px;
  font-weight: 800;
  color: var(--lenses-primary);
  margin: 0;
}

.lens-sim-visual {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 15px;
  background-color: #f8fafc;
  border-radius: 12px;
  padding: 12px;
  border: 1px solid #f1f5f9;
  margin-bottom: 15px;
  position: relative;
}

.lens-svg-viewport {
  width: 100%;
  height: 80px;
}

.eye-lens-refraction {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-top: -5px;
  margin-bottom: 5px;
}

.eye-lens-box {
  width: 76px;
  height: 76px;
  border-radius: 50%;
  border: 2px solid #cbd5e1;
  background-color: #f1f5f9;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  box-shadow: inset 0 2px 5px rgba(0,0,0,0.05);
}

.eye-lens-box::after {
  content: '';
  position: absolute;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(255,255,255,0.2) 0%, transparent 50%, transparent 100%);
  pointer-events: none;
}

.eye-lens-globe {
  width: 50px;
  height: 30px;
  background-color: var(--lenses-white);
  border-radius: 50% 50% 50% 50% / 60% 60% 40% 40%;
  border: 2px solid var(--lenses-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.eye-lens-globe::before {
  content: '';
  width: 22px;
  height: 22px;
  background-color: var(--lenses-secondary);
  background-image: radial-gradient(circle, var(--lenses-accent) 0%, transparent 70%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.eye-lens-globe::after {
  content: '';
  position: absolute;
  width: 8px;
  height: 8px;
  background-color: var(--lenses-primary);
  border-radius: 50%;
}

.lens-sim-measurements {
  display: flex;
  flex-direction: column;
  gap: 6px;
  background-color: #f8fafc;
  border-radius: 12px;
  padding: 12px;
  margin-bottom: 15px;
  border: 1px solid #f1f5f9;
}

.measure-row {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--lenses-text-dark);
}

.measure-row strong {
  font-size: 13px;
  color: var(--lenses-primary);
  font-weight: 800;
  direction: ltr;
}

.index-specs-list {
  list-style: none;
  padding: 0;
  margin: 0 0 15px 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex-grow: 1;
}

.index-specs-list li {
  font-size: 11px;
  line-height: 1.6;
  color: #475569;
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.index-specs-list li i {
  color: var(--lenses-secondary);
  font-size: 12px;
  margin-top: 2px;
}

.index-card-desc {
  font-size: 11.5px;
  line-height: 1.6;
  color: var(--lenses-text-muted);
  margin: 0;
  border-top: 1px solid #f1f5f9;
  padding-top: 10px;
  text-align: justify;
}

.simulator-notice {
  margin-top: 25px;
  background-color: rgba(0, 136, 204, 0.05);
  border: 1px solid rgba(0, 136, 204, 0.15);
  border-radius: 16px;
  padding: 20px;
  display: flex;
  gap: 15px;
  align-items: start;
}

.simulator-notice i {
  font-size: 18px;
  color: var(--lenses-secondary);
  margin-top: 2px;
}

.simulator-notice span {
  font-size: 13px;
  line-height: 1.8;
  color: #334155;
  text-align: justify;
}

/* ==========================================================================
   Responsive for New Components
   ========================================================================== */
@media (max-width: 1024px) {
  .simulator-main {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .lens-compare-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .advisor-card {
    padding: 25px;
  }
  .options-grid {
    grid-template-columns: 1fr;
  }
  .result-body-grid {
    grid-template-columns: 1fr;
  }
  .result-actions {
    flex-direction: column;
    gap: 15px;
    align-items: stretch;
  }
  .result-actions-links {
    flex-direction: column;
    width: 100%;
    gap: 10px;
  }
  .advisor-cta-btn, .advisor-prev-btn, .advisor-wizard-btn {
    justify-content: center;
    width: 100%;
    text-align: center;
  }
  .rec-products-grid {
    grid-template-columns: 1fr;
  }
  .rec-products-section {
    padding: 20px 15px;
  }
  .specialized-card {
    flex-direction: column;
    gap: 15px;
    align-items: flex-start;
  }
  .coatings-simulator-wrapper {
    padding: 25px;
  }
  .simulator-viewport {
    height: 300px;
  }
  .simulator-lens {
    width: 160px;
    height: 160px;
  }
  .env-buttons {
    flex-direction: column;
  }
  .brands-matrix-wrapper {
    padding: 25px;
  }
  .inputs-row {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .lens-compare-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
  }
}

@media (max-width: 480px) {
  .lens-compare-grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   5. Materials Encyclopedia (دانشنامه تخصصی جنس عدسی)
   ========================================================================== */
.materials-encyclopedia {
  margin-top: 50px;
  border-top: 1px solid #e2e8f0;
  padding-top: 40px;
}

.encyclopedia-header {
  text-align: center;
  margin-bottom: 35px;
}

.encyclopedia-header h3 {
  font-size: 22px;
  color: var(--lenses-primary);
  font-weight: 800;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.encyclopedia-header h3 i {
  color: var(--lenses-secondary);
}

.encyclopedia-header p {
  color: var(--lenses-text-muted);
  font-size: 15px;
}

.material-tabs-nav {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-bottom: 40px;
  background-color: #f8fafc;
  padding: 8px;
  border-radius: 20px;
  border: 1px solid #e2e8f0;
}

.material-tab-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  background: transparent;
  border: none;
  border-radius: 14px;
  color: #475569;
  font-weight: 700;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.material-tab-btn:hover {
  color: var(--lenses-primary);
  background-color: rgba(0, 136, 204, 0.05);
}

.material-tab-btn.active {
  color: #fff;
  background: linear-gradient(135deg, var(--lenses-primary) 0%, var(--lenses-secondary) 100%);
  box-shadow: 0 8px 16px rgba(0, 136, 204, 0.15);
}

.material-tab-btn .tab-icon {
  font-size: 16px;
}

.material-tabs-content {
  position: relative;
  min-height: 400px;
}

.material-tab-pane {
  display: none;
  animation: fadeInPane 0.5s ease forwards;
}

.material-tab-pane.active {
  display: block;
}

@keyframes fadeInPane {
  from {
    opacity: 0;
    transform: translateY(15px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.material-pane-grid {
  display: grid;
  grid-template-columns: 1.1fr 2fr;
  gap: 40px;
  align-items: flex-start;
}

.material-visual-col {
  display: flex;
  flex-direction: column;
  gap: 25px;
  position: sticky;
  top: 90px; /* Keep sticky below site header if any */
}

.material-img-wrapper {
  width: 100%;
  border-radius: 24px;
  overflow: hidden;
  box-shadow: var(--lenses-card-shadow);
  border: 1px solid #e2e8f0;
  background-color: #fff;
  padding: 8px;
}

.material-img-wrapper img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 18px;
  transition: transform 0.5s ease;
}

.material-img-wrapper:hover img {
  transform: scale(1.03);
}

.material-specs-card {
  background-color: #f8fafc;
  border-radius: 24px;
  padding: 25px;
  border: 1px solid #e2e8f0;
}

.material-specs-card h4 {
  font-size: 15px;
  color: var(--lenses-primary);
  font-weight: 800;
  margin-bottom: 20px;
  border-bottom: 1px solid #e2e8f0;
  padding-bottom: 10px;
}

.spec-meter-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 15px;
}

.spec-meter-row:last-child {
  margin-bottom: 0;
}

.spec-label {
  font-size: 12px;
  color: #475569;
  font-weight: 700;
}

.spec-meter-bar {
  height: 8px;
  background-color: #e2e8f0;
  border-radius: 4px;
  overflow: hidden;
  position: relative;
}

.spec-meter-fill {
  height: 100%;
  border-radius: 4px;
  transition: width 1s cubic-bezier(0.1, 0.8, 0.25, 1);
}

.spec-meter-fill.abbe-fill {
  background: linear-gradient(90deg, #10b981, #059669);
}

.spec-meter-fill.density-fill {
  background: linear-gradient(90deg, #0ea5e9, #0284c7);
}

.spec-meter-fill.impact-fill {
  background: linear-gradient(90deg, #f59e0b, #d97706);
}

.spec-meter-fill.scratch-fill {
  background: linear-gradient(90deg, #8b5cf6, #7c3aed);
}

.spec-meter-fill.uv-fill {
  background: linear-gradient(90deg, #ec4899, #db2777);
}

.spec-value {
  font-size: 11px;
  color: #64748b;
  font-weight: 800;
  text-align: left;
  margin-top: 2px;
}

.material-text-col {
  display: flex;
  flex-direction: column;
  gap: 25px;
}

.material-text-col h3 {
  font-size: 22px;
  color: var(--lenses-primary);
  font-weight: 800;
  line-height: 1.5;
}

.material-intro {
  font-size: 15px;
  line-height: 1.85;
  color: #334155;
  text-align: justify;
}

.material-details-section {
  background-color: #f8fafc;
  border-right: 4px solid var(--lenses-secondary);
  padding: 20px;
  border-radius: 16px;
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
}

.material-details-section h4 {
  font-size: 15px;
  color: #1e293b;
  font-weight: 800;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.material-details-section h4 i {
  color: var(--lenses-secondary);
}

.material-details-section p {
  font-size: 14px;
  line-height: 1.8;
  color: #475569;
  text-align: justify;
}

.pros-cons-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.pros-box, .cons-box {
  border-radius: 20px;
  padding: 20px;
}

.pros-box {
  background-color: rgba(16, 185, 129, 0.03);
  border: 1px solid rgba(16, 185, 129, 0.12);
}

.cons-box {
  background-color: rgba(239, 68, 68, 0.03);
  border: 1px solid rgba(239, 68, 68, 0.12);
}

.pros-box h5 {
  color: #065f46;
  font-size: 14px;
  font-weight: 800;
  margin-bottom: 15px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.cons-box h5 {
  color: #991b1b;
  font-size: 14px;
  font-weight: 800;
  margin-bottom: 15px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.pros-box ul, .cons-box ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.pros-box li, .cons-box li {
  font-size: 13px;
  line-height: 1.7;
  position: relative;
  padding-right: 22px;
  color: #475569;
  text-align: justify;
}

.pros-box li::before {
  content: '\f058';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  position: absolute;
  right: 0;
  top: 1px;
  color: #10b981;
}

.cons-box li::before {
  content: '\f057';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  position: absolute;
  right: 0;
  top: 1px;
  color: #ef4444;
}

.candidates-box {
  background-color: #f1f5f9;
  border-radius: 20px;
  padding: 20px;
  border: 1px solid #e2e8f0;
}

.candidates-box h4 {
  font-size: 15px;
  color: #1e293b;
  font-weight: 800;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.candidates-box p {
  font-size: 14px;
  line-height: 1.8;
  color: #475569;
  text-align: justify;
}

.optometrist-tip {
  background: linear-gradient(135deg, rgba(0, 180, 167, 0.03) 0%, rgba(0, 136, 204, 0.03) 100%);
  border: 1px solid rgba(0, 180, 167, 0.15);
  border-radius: 20px;
  padding: 22px;
}

.optometrist-tip h5 {
  color: #0d9488;
  font-size: 14px;
  font-weight: 800;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.optometrist-tip p {
  font-size: 13.5px;
  line-height: 1.85;
  color: #0f766e;
  font-style: italic;
  text-align: justify;
}

/* Responsive adjustments for materials encyclopedia */
@media (max-width: 992px) {
  .material-pane-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .material-visual-col {
    position: static;
  }
  .material-img-wrapper {
    max-width: 500px;
    margin: 0 auto;
  }
  .material-specs-card {
    max-width: 500px;
    margin: 0 auto;
    width: 100%;
  }
}

@media (max-width: 768px) {
  .material-tabs-nav {
    justify-content: flex-start;
    overflow-x: auto;
    flex-wrap: nowrap;
    white-space: nowrap;
    padding: 6px;
    -webkit-overflow-scrolling: touch;
  }
  .material-tabs-nav::-webkit-scrollbar {
    height: 4px;
  }
  .material-tabs-nav::-webkit-scrollbar-thumb {
    background-color: #cbd5e1;
    border-radius: 4px;
  }
  .material-tab-btn {
    padding: 10px 16px;
    flex-shrink: 0;
  }
  .pros-cons-container {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   Section 6: 5 Surprising Facts About Prescription Lenses (۵ واقعیت غافلگیرکننده)
   ========================================================================== */
.surprising-facts-section {
  margin-bottom: 60px;
}

.section-header-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 136, 204, 0.1);
  color: var(--lenses-secondary);
  padding: 6px 18px;
  border-radius: 50px;
  font-size: 13.5px;
  font-weight: 700;
  margin-bottom: 15px;
  border: 1px solid rgba(0, 136, 204, 0.2);
}

.facts-intro-card {
  display: flex;
  align-items: flex-start;
  gap: 25px;
  background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
  border: 1px solid #e2e8f0;
  border-right: 5px solid var(--lenses-secondary);
  border-radius: 20px;
  padding: 30px;
  margin-bottom: 35px;
  box-shadow: 0 10px 25px rgba(15, 23, 42, 0.04);
}

.facts-intro-icon {
  width: 60px;
  height: 60px;
  border-radius: 18px;
  background: linear-gradient(135deg, var(--lenses-secondary), #00a2f3);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  flex-shrink: 0;
  box-shadow: 0 8px 20px rgba(0, 136, 204, 0.25);
}

.facts-intro-text .intro-lead {
  font-size: 15.5px;
  color: var(--lenses-text-dark);
  line-height: 1.85;
  margin-bottom: 12px;
  font-weight: 500;
  text-align: justify;
}

.facts-intro-text .intro-sub {
  font-size: 14.5px;
  color: var(--lenses-text-muted);
  line-height: 1.85;
  margin: 0;
  text-align: justify;
}

.facts-grid {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.fact-card {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.03);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.fact-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 35px rgba(15, 23, 42, 0.07);
  border-color: #cbd5e1;
}

.fact-card-header {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 24px 30px;
  background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
  border-bottom: 1px solid #e2e8f0;
}

.fact-number {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--lenses-primary), var(--lenses-secondary));
  color: #ffffff;
  font-size: 22px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 6px 15px rgba(16, 31, 60, 0.15);
}

.fact-title-wrap {
  display: flex;
  flex-direction: column;
}

.fact-tagline {
  font-size: 12.5px;
  font-weight: 700;
  color: var(--lenses-secondary);
  margin-bottom: 2px;
}

.fact-title-wrap h3 {
  font-size: 20px;
  font-weight: 800;
  color: var(--lenses-primary);
  margin: 0;
  line-height: 1.4;
}

.fact-card-body {
  padding: 30px;
  font-size: 15px;
  color: #334155;
  line-height: 1.85;
  text-align: justify;
}

.fact-card-body p {
  margin-bottom: 16px;
}

.fact-highlight-points {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 22px 0;
  background: #f8fafc;
  padding: 20px 24px;
  border-radius: 14px;
  border-right: 4px solid var(--lenses-accent);
}

.point-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 14.5px;
  line-height: 1.8;
}

.point-item i {
  margin-top: 5px;
  flex-shrink: 0;
}

.text-accent {
  color: var(--lenses-secondary);
}

.fact-quote-box {
  background: linear-gradient(135deg, #0e1e38 0%, #1a3a60 100%);
  color: #ffffff;
  padding: 22px 28px;
  border-radius: 16px;
  position: relative;
  margin-top: 25px;
  box-shadow: 0 10px 25px rgba(14, 30, 56, 0.15);
}

.fact-quote-box .quote-icon {
  color: var(--lenses-accent);
  font-size: 24px;
  opacity: 0.8;
  margin-bottom: 8px;
  display: block;
}

.fact-quote-box blockquote {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.85;
  margin: 0;
  color: #f1f5f9;
  font-style: italic;
}

.fact-alert-box {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 18px 22px;
  border-radius: 14px;
  margin: 20px 0;
  font-size: 14.5px;
  line-height: 1.8;
}

.fact-alert-box .alert-icon {
  font-size: 20px;
  flex-shrink: 0;
  margin-top: 2px;
}

.fact-alert-box.warning {
  background: #fffbeb;
  border: 1px solid #fde68a;
  color: #92400e;
}

.fact-alert-box.warning .alert-icon {
  color: #d97706;
}

.fact-alert-box.danger {
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: #991b1b;
}

.fact-alert-box.danger .alert-icon {
  color: #dc2626;
}

.fact-specs-comparison {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
  margin-top: 22px;
}

.spec-compare-card {
  display: flex;
  align-items: center;
  gap: 16px;
  background: #f8fafc;
  padding: 18px 20px;
  border-radius: 14px;
  border: 1px solid #e2e8f0;
  transition: border-color 0.2s ease;
}

.spec-compare-card:hover {
  border-color: var(--lenses-secondary);
}

.spec-compare-card .compare-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: rgba(0, 136, 204, 0.1);
  color: var(--lenses-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}

.spec-compare-card .compare-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.compare-label {
  font-size: 12.5px;
  color: #64748b;
  font-weight: 600;
}

.compare-val {
  font-size: 13.5px;
  color: var(--lenses-text-dark);
}

.fact-table-wrapper {
  margin-top: 25px;
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 16px;
  padding: 24px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.02);
}

.fact-table-wrapper .table-title {
  font-size: 16px;
  font-weight: 800;
  color: var(--lenses-primary);
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.fact-table-wrapper .table-subtitle {
  font-size: 13.5px;
  color: #64748b;
  margin-bottom: 16px;
}

.fact-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  text-align: right;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid #e2e8f0;
}

.fact-table th {
  background: #0e1e38;
  color: #ffffff;
  padding: 14px 18px;
  font-size: 14px;
  font-weight: 700;
}

.fact-table td {
  padding: 14px 18px;
  border-bottom: 1px solid #f1f5f9;
  font-size: 13.5px;
  color: #334155;
  line-height: 1.7;
}

.fact-table tbody tr:last-child td {
  border-bottom: none;
}

.fact-table tbody tr:nth-child(even) {
  background: #f8fafc;
}

.lens-pill {
  display: inline-block;
  padding: 5px 14px;
  border-radius: 50px;
  font-size: 12.5px;
  font-weight: 700;
}

.lens-pill.green {
  background: #dcfce7;
  color: #166534;
  border: 1px solid #bbf7d0;
}

.lens-pill.blue {
  background: #e0f2fe;
  color: #0369a1;
  border: 1px solid #bae6fd;
}

.lens-pill.purple {
  background: #f3e8ff;
  color: #6b21a8;
  border: 1px solid #e9d5ff;
}

.lens-pill.orange {
  background: #ffedd5;
  color: #9a3412;
  border: 1px solid #fed7aa;
}

.facts-conclusion-wrapper {
  background: linear-gradient(135deg, #0e1e38 0%, #162a4d 100%);
  color: #ffffff;
  padding: 40px;
  border-radius: 24px;
  margin-top: 40px;
  box-shadow: 0 15px 35px rgba(15, 23, 42, 0.12);
}

.conclusion-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 210, 196, 0.15);
  color: var(--lenses-accent);
  padding: 6px 16px;
  border-radius: 50px;
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 15px;
  border: 1px solid rgba(0, 210, 196, 0.25);
}

.conclusion-header h3 {
  font-size: 26px;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 10px;
}

.conclusion-header p {
  font-size: 15px;
  color: #cbd5e1;
  margin-bottom: 25px;
  line-height: 1.8;
}

.conclusion-steps-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 30px;
}

.c-step-card {
  display: flex;
  gap: 16px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 22px;
  border-radius: 16px;
  backdrop-filter: blur(10px);
}

.c-step-num {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--lenses-accent);
  color: #0e1e38;
  font-weight: 800;
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.c-step-content h4 {
  color: #ffffff;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}

.c-step-content p {
  color: #e2e8f0;
  font-size: 13.5px;
  line-height: 1.8;
  margin: 0;
  text-align: justify;
}

.conclusion-final-quote {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 25px;
  text-align: center;
}

.conclusion-final-quote p {
  font-size: 16px;
  font-weight: 600;
  color: #f8fafc;
  line-height: 1.9;
  font-style: italic;
  margin-bottom: 18px;
}

.source-citation {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 0, 0, 0.25);
  padding: 8px 20px;
  border-radius: 50px;
  font-size: 13px;
  color: #94a3b8;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.source-citation strong {
  color: var(--lenses-accent);
}

/* Responsive Rules for 5 Surprising Facts */
@media (max-width: 992px) {
  .conclusion-steps-grid {
    grid-template-columns: 1fr;
  }
  .facts-intro-card {
    flex-direction: column;
    gap: 15px;
  }
}

@media (max-width: 768px) {
  .fact-card-header {
    padding: 18px 20px;
    gap: 14px;
  }
  .fact-number {
    width: 40px;
    height: 40px;
    font-size: 18px;
  }
  .fact-title-wrap h3 {
    font-size: 17px;
  }
  .fact-card-body {
    padding: 20px;
  }
  .facts-conclusion-wrapper {
    padding: 25px 20px;
  }
  .conclusion-header h3 {
    font-size: 21px;
  }
  .c-step-card {
    padding: 16px;
  }
}