/* ==========================================================================
   Ottica BellaVista Milano - Modern Stylesheet (Tailwind-inspired Clean CSS)
   ========================================================================== */

:root {
  --primary: #0284c7;         /* Sky 600 */
  --primary-hover: #0369a1;   /* Sky 700 */
  --primary-light: #e0f2fe;   /* Sky 100 */
  --primary-focus: rgba(2, 132, 199, 0.25);
  
  --secondary: #0f172a;       /* Slate 900 */
  --secondary-light: #1e293b; /* Slate 800 */
  
  --accent: #0d9488;          /* Teal 600 */
  --accent-light: #ccfbf1;    /* Teal 100 */
  
  --warning: #f59e0b;
  --success: #10b981;
  --danger: #ef4444;
  
  --bg-main: #f8fafc;
  --bg-card: #ffffff;
  --text-main: #0f172a;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  --border: #e2e8f0;
  
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-full: 9999px;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --font-main: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

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

html {
  font-family: var(--font-main);
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.6;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  width: 100%;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}

button, input, select, textarea {
  font-family: inherit;
  font-size: 1rem;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

/* Container */
.container {
  width: 100%;
  max-width: 1240px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

/* Typography Helpers */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-primary { color: var(--primary); }
.text-muted { color: var(--text-muted); }
.text-white { color: #ffffff; }
.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 12px;
}

.section-title {
  font-size: 2.25rem;
  line-height: 1.25;
  font-weight: 800;
  color: var(--secondary);
  margin-bottom: 16px;
}

@media (max-width: 768px) {
  .section-title {
    font-size: 1.75rem;
  }
}

.section-desc {
  font-size: 1.125rem;
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto 40px;
}

/* Breadcrumbs */
.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 16px;
  padding: 0;
}

.breadcrumbs li {
  display: inline-flex;
  align-items: center;
  list-style: none;
}

.breadcrumbs a {
  color: var(--primary);
  font-weight: 500;
}

.breadcrumbs a:hover {
  text-decoration: underline;
}

.breadcrumbs span {
  color: var(--text-muted);
}

/* Top Announcement / Compliance Bar */
.top-bar {
  background: var(--secondary);
  color: #94a3b8;
  font-size: 0.825rem;
  padding: 8px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.top-bar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.top-bar-links {
  display: flex;
  align-items: center;
  gap: 20px;
}

.top-bar-links a:hover {
  color: #ffffff;
}

/* Language Switcher */
.lang-switcher {
  display: inline-flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-full);
  padding: 2px 4px;
  gap: 2px;
}

.lang-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  color: #cbd5e1;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  background: transparent;
}

.lang-btn:hover {
  color: #ffffff;
}

.lang-btn.active {
  background: var(--primary);
  color: #ffffff;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.header-lang-switcher {
  display: inline-flex;
  align-items: center;
  background: var(--bg-main);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  padding: 2px 4px;
  gap: 2px;
}

.header-lang-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 8px;
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition);
  border: none;
  background: transparent;
}

.header-lang-btn:hover {
  color: var(--secondary);
}

.header-lang-btn.active {
  background: var(--primary);
  color: #ffffff;
}

/* Header & Nav */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

.nav-wrapper, .header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  gap: 16px;
}

.nav-wrapper nav, .header-inner nav {
  display: flex;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--secondary);
}

.logo-icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
}

.logo span {
  color: var(--primary);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-link {
  font-weight: 500;
  color: var(--secondary);
  font-size: 0.95rem;
  position: relative;
  padding: 6px 0;
}

.nav-link:hover, .nav-link.active {
  color: var(--primary);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.phone-quick {
  display: flex;
  flex-direction: column;
  text-align: right;
}

.phone-quick a {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--secondary);
}

.phone-quick span {
  font-size: 0.75rem;
  color: var(--success);
  font-weight: 500;
}

.cart-btn {
  position: relative;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--bg-main);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--secondary);
  transition: var(--transition);
}

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

.cart-count {
  position: absolute;
  top: -6px;
  right: -6px;
  background: var(--primary);
  color: white;
  font-size: 0.72rem;
  font-weight: 700;
  width: 20px;
  height: 20px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid white;
}

.mobile-menu-toggle {
  display: none;
  padding: 8px;
  font-size: 1.5rem;
  color: var(--secondary);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  transition: var(--transition);
  font-size: 0.95rem;
  text-align: center;
}

.btn-primary {
  background: var(--primary);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(2, 132, 199, 0.35);
}

.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(2, 132, 199, 0.45);
}

.btn-secondary {
  background: var(--secondary);
  color: #ffffff;
}

.btn-secondary:hover {
  background: var(--secondary-light);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: var(--secondary);
  border: 1.5px solid var(--border);
}

.btn-outline:hover {
  background: var(--bg-main);
  border-color: var(--secondary);
}

.btn-outline-primary {
  background: transparent;
  color: var(--primary);
  border: 1.5px solid var(--primary);
}

.btn-outline-primary:hover {
  background: var(--primary-light);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.85rem;
}

.btn-lg {
  padding: 16px 32px;
  font-size: 1.05rem;
  border-radius: var(--radius-lg);
}

.btn-block {
  width: 100%;
}

/* Medical Disclaimer Banner (Google Policy Critical) */
.medical-disclaimer {
  background: #fffbeb;
  border: 1px solid #fde68a;
  color: #92400e;
  border-radius: var(--radius-md);
  padding: 14px 20px;
  font-size: 0.875rem;
  line-height: 1.5;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin: 20px 0;
}

.medical-disclaimer svg {
  flex-shrink: 0;
  margin-top: 2px;
}

/* Sections */
section {
  padding: 70px 0;
}

.bg-white { background-color: #ffffff; }
.bg-light { background-color: var(--bg-main); }
.bg-dark { background-color: var(--secondary); color: #ffffff; }

/* Hero Section */
.hero {
  padding: 80px 0 60px;
  background: radial-gradient(circle at 80% 20%, rgba(224, 242, 254, 0.7) 0%, rgba(248, 250, 252, 0.95) 60%);
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 50px;
  align-items: center;
}

.hero-title {
  font-size: 3rem;
  line-height: 1.15;
  font-weight: 800;
  color: var(--secondary);
  margin-bottom: 20px;
}

.hero-title span {
  color: var(--primary);
  position: relative;
  display: inline-block;
}

.hero-title span::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 0;
  right: 0;
  height: 8px;
  background: var(--accent-light);
  z-index: -1;
  border-radius: 4px;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin-bottom: 32px;
  line-height: 1.6;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 40px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.stat-item h4 {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--secondary);
  line-height: 1;
}

.stat-item p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.hero-card {
  background: #ffffff;
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--border);
  position: relative;
}

.hero-card-badge {
  position: absolute;
  top: -14px;
  right: 24px;
  background: var(--accent);
  color: #ffffff;
  font-size: 0.78rem;
  font-weight: 700;
  padding: 6px 14px;
  border-radius: var(--radius-full);
}

/* Feature Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  padding: 30px 24px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-light);
}

.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.feature-card h3 {
  font-size: 1.25rem;
  color: var(--secondary);
}

.feature-card p {
  font-size: 0.95rem;
  color: var(--text-muted);
}

/* Product Cards & Grid */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 28px;
}

.product-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  position: relative;
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: #cbd5e1;
}

.product-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 2;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  text-transform: uppercase;
}

.badge-hit { background: #fee2e2; color: #dc2626; }
.badge-sale { background: #fef3c7; color: #b45309; }
.badge-new { background: #dcfce7; color: #15803d; }
.badge-blue { background: #e0f2fe; color: #0369a1; }

.product-img-wrapper {
  background: #f1f5f9;
  height: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 20px;
}

.product-img-wrapper img {
  max-height: 100%;
  object-fit: contain;
  transition: transform 0.4s ease;
}

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

.product-info {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.product-category {
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 6px;
  letter-spacing: 0.04em;
}

.product-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 8px;
  line-height: 1.3;
}

.product-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 16px;
  flex-grow: 1;
}

.product-specs {
  display: flex;
  gap: 12px;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

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

.product-price {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--secondary);
}

.product-old-price {
  font-size: 0.9rem;
  color: var(--text-light);
  text-decoration: line-through;
  margin-left: 6px;
}

/* Forms & Inputs */
.form-group {
  margin-bottom: 18px;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--secondary);
  margin-bottom: 6px;
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  background: #ffffff;
  color: var(--secondary);
  font-size: 16px; /* Crucial for iOS: Prevents automatic page zoom on focus */
  transition: var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px var(--primary-focus);
}

.form-checkbox {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.825rem;
  color: var(--text-muted);
  cursor: pointer;
}

.form-checkbox input[type="checkbox"] {
  margin-top: 3px;
  accent-color: var(--primary);
  width: 16px;
  height: 16px;
}

.form-checkbox a {
  color: var(--primary);
  text-decoration: underline;
}

/* Vision Test / Interactive Screening UI */
.test-container {
  background: #ffffff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--border);
  overflow: hidden;
  max-width: 860px;
  margin: 0 auto;
}

.test-header {
  background: var(--secondary);
  color: #ffffff;
  padding: 24px 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.test-progress-bar {
  height: 6px;
  background: rgba(255, 255, 255, 0.2);
  width: 100%;
}

.test-progress-fill {
  height: 100%;
  background: var(--accent);
  width: 20%;
  transition: width 0.4s ease;
}

.test-body {
  padding: 40px;
}

.test-step {
  display: none;
}

.test-step.active {
  display: block;
  animation: fadeIn 0.4s ease;
}

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

.test-display-box {
  background: #f8fafc;
  border: 2px dashed var(--border);
  border-radius: var(--radius-md);
  padding: 30px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 240px;
  margin: 24px 0;
  text-align: center;
}

.duochrome-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  width: 100%;
  border-radius: var(--radius-md);
  overflow: hidden;
  min-height: 200px;
}

.duochrome-red {
  background: #ef4444;
  color: #000000;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3.5rem;
  font-weight: 800;
}

.duochrome-green {
  background: #10b981;
  color: #000000;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3.5rem;
  font-weight: 800;
}

.options-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.option-btn {
  padding: 16px;
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  background: #ffffff;
  font-weight: 600;
  color: var(--secondary);
  transition: var(--transition);
  text-align: center;
}

.option-btn:hover, .option-btn.selected {
  border-color: var(--primary);
  background: var(--primary-light);
  color: var(--primary);
}

/* Reviews / Testimonials */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.review-card {
  background: #ffffff;
  padding: 28px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.review-stars {
  color: #f59e0b;
  display: flex;
  gap: 4px;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: auto;
}

.review-avatar {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.review-meta h5 {
  font-size: 0.95rem;
  color: var(--secondary);
}

.review-meta span {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* FAQ Accordion */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: 20px 24px;
  text-align: left;
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--secondary);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #ffffff;
}

.faq-question:hover {
  background: #f8fafc;
}

.faq-answer {
  padding: 0 24px 20px;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
  display: none;
}

.faq-item.active .faq-answer {
  display: block;
}

.faq-icon {
  transition: transform 0.3s ease;
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

/* Footer (Strict Compliance) */
.footer {
  background: var(--secondary);
  color: #cbd5e1;
  padding: 70px 0 30px;
  margin-top: auto;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.9rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 50px;
}

.footer-col h4 {
  color: #ffffff;
  font-size: 1.1rem;
  margin-bottom: 20px;
  font-weight: 700;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a:hover {
  color: #ffffff;
  padding-left: 4px;
}

.footer-bottom {
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  font-size: 0.8rem;
  color: #94a3b8;
}

.footer-disclaimer {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin-bottom: 30px;
  font-size: 0.825rem;
  color: #94a3b8;
  line-height: 1.6;
}

/* Cart Drawer */
.cart-drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}

.cart-drawer-overlay.active {
  opacity: 1;
  visibility: visible;
}

.cart-drawer {
  position: fixed;
  top: 0;
  right: -420px;
  width: 100%;
  max-width: 420px;
  height: 100%;
  background: #ffffff;
  z-index: 2001;
  box-shadow: var(--shadow-xl);
  display: flex;
  flex-direction: column;
  transition: right 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.cart-drawer.active {
  right: 0;
}

.cart-drawer-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.cart-drawer-body {
  padding: 24px;
  overflow-y: auto;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.cart-drawer-footer {
  padding: 20px 24px;
  border-top: 1px solid var(--border);
  background: var(--bg-main);
}

.cart-item {
  display: flex;
  gap: 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.cart-item-img {
  width: 70px;
  height: 70px;
  background: #f1f5f9;
  border-radius: var(--radius-sm);
  padding: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.cart-item-details {
  flex-grow: 1;
}

/* Modal Windows */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(4px);
  z-index: 3000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  background: #ffffff;
  border-radius: var(--radius-lg);
  max-width: 520px;
  width: 100%;
  padding: 32px;
  position: relative;
  box-shadow: var(--shadow-xl);
  max-height: 90vh;
  overflow-y: auto;
}

.modal-close {
  position: absolute;
  top: 20px;
  right: 20px;
  font-size: 1.5rem;
  color: var(--text-muted);
}

/* Cookie Banner */
.cookie-banner {
  position: fixed;
  bottom: 24px;
  left: 24px;
  right: 24px;
  max-width: 600px;
  margin: 0 auto;
  background: #ffffff;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-xl);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  z-index: 2500;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.cookie-banner-actions {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}

/* Mobile Nav Drawer */
.mobile-nav {
  position: fixed;
  top: 0;
  left: -320px;
  width: 300px;
  max-width: 85vw;
  height: 100%;
  background: #ffffff;
  z-index: 2001;
  box-shadow: var(--shadow-xl);
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  transition: left 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.mobile-nav.active {
  left: 0;
}

.mobile-nav-close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background: var(--bg-main);
  color: var(--secondary);
  font-size: 1.4rem;
  line-height: 1;
  border: 1px solid var(--border);
  cursor: pointer;
  transition: var(--transition);
}

.mobile-nav-close:hover {
  background: var(--border);
  color: var(--danger);
}

/* Policy Content Pages Styling */
.policy-header {
  padding: 60px 0 40px;
  background: #ffffff;
  border-bottom: 1px solid var(--border);
}

.policy-content {
  background: #ffffff;
  border-radius: var(--radius-lg);
  padding: 40px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  margin-top: 30px;
  margin-bottom: 60px;
}

.policy-content h2 {
  font-size: 1.4rem;
  color: var(--secondary);
  margin-top: 28px;
  margin-bottom: 12px;
}

.policy-content p {
  color: #334155;
  margin-bottom: 16px;
  line-height: 1.7;
}

.policy-content ul, .policy-content ol {
  margin-bottom: 20px;
  padding-left: 24px;
  color: #334155;
}

.policy-content li {
  margin-bottom: 8px;
  line-height: 1.6;
}

/* ==========================================================================
   Responsive Utility Classes (Semantic, Reusable)
   ========================================================================== */
.grid-2col-responsive {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
}

.form-row-responsive {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.acuity-grid-responsive {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  max-width: 500px;
  margin: 0 auto;
}

.product-main-grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 40px;
  padding: 36px;
}

.banner-split-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 24px;
  align-items: center;
}

.catalog-callout-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr;
  gap: 30px;
  align-items: center;
}

.quick-view-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 24px;
  align-items: center;
}

.thank-you-card {
  max-width: 760px;
  margin: 0 auto;
  background: #ffffff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  text-align: center;
  padding: 48px 32px;
}

.product-tabs-wrapper {
  border-top: 1px solid var(--border);
  padding: 0 36px 36px;
}

/* Tech Specs Table (Certifications) */
.specs-tech-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 600px;
  background: #ffffff;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.specs-tech-table th {
  background: var(--bg-main);
  padding: 14px 18px;
  text-align: left;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--secondary);
  border-bottom: 2px solid var(--border);
}

.specs-tech-table td {
  padding: 14px 18px;
  font-size: 0.875rem;
  color: #334155;
  border-bottom: 1px solid var(--border);
}

.badge-iso {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 700;
  font-size: 0.78rem;
  padding: 4px 10px;
  border-radius: var(--radius-full);
}

/* ==========================================================================
   Certifications & Official Standards Section (2x2 Grid)
   ========================================================================== */
.cert-section {
  padding: 80px 0;
  background: #f8fafc;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.cert-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 960px;
  margin: 36px auto 0;
}

.cert-card {
  background: #ffffff;
  border: 1.5px solid var(--border);
  border-radius: 16px;
  padding: 36px 28px;
  text-align: center;
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.04);
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.cert-card:hover {
  transform: translateY(-4px);
  border-color: #93c5fd;
  box-shadow: 0 12px 24px rgba(37, 99, 235, 0.08);
}

.cert-card.highlighted {
  border-color: #2563eb;
  box-shadow: 0 4px 16px rgba(37, 99, 235, 0.12);
  position: relative;
}

.cert-card.highlighted:hover {
  border-color: #1d4ed8;
  box-shadow: 0 14px 28px rgba(37, 99, 235, 0.18);
}

.cert-icon-circle {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: linear-gradient(135deg, #1d4ed8, #2563eb);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  box-shadow: 0 8px 18px rgba(37, 99, 235, 0.25);
  transition: transform 0.25s ease;
}

.cert-card:hover .cert-icon-circle {
  transform: scale(1.06);
}

.cert-card-title {
  font-size: 1.18rem;
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 10px;
  line-height: 1.35;
}

.cert-card-desc {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin: 0;
}

/* ==========================================================================
   Comprehensive Mobile & Tablet Media Queries
   ========================================================================== */

/* Tablet (max-width: 1024px) */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 30px;
  }
  .catalog-callout-grid {
    grid-template-columns: 1.2fr 0.8fr;
    gap: 20px;
  }
  .nav-menu {
    gap: 16px;
  }
  .nav-link {
    font-size: 0.88rem;
  }
  .logo {
    font-size: 1.25rem;
  }
  .phone-quick a {
    font-size: 0.85rem;
  }
}

/* Mobile Landscape & Tablet Vertical (max-width: 768px) */
@media (max-width: 768px) {
  .top-bar-inner {
    flex-direction: column;
    text-align: center;
    gap: 8px;
  }
  .top-bar-links {
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px 14px;
    font-size: 0.78rem;
  }
  .nav-menu {
    display: none;
  }
  .mobile-menu-toggle {
    display: block;
  }
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .grid-2col-responsive {
    grid-template-columns: 1fr;
    gap: 24px;
    margin: 24px 0 40px !important;
  }
  .product-main-grid {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 24px 18px;
  }
  .banner-split-grid {
    grid-template-columns: 1fr;
    gap: 20px;
    text-align: center;
  }
  .catalog-callout-grid {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 28px 20px;
  }
  .quick-view-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .test-body {
    padding: 24px 16px;
  }
  .policy-content {
    padding: 24px 18px;
  }
  .cert-section {
    padding: 50px 0;
  }
  .cert-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .cert-card {
    padding: 28px 20px;
  }
}

/* Mobile Standard (max-width: 640px) */
@media (max-width: 640px) {
  .phone-quick {
    display: none; /* Hide large phone box in header to prevent crowding logo & buttons */
  }
  .form-row-responsive {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .acuity-grid-responsive {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }
  .reviews-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .products-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .cookie-banner {
    left: 12px;
    right: 12px;
    bottom: 12px;
    padding: 16px;
    flex-direction: column;
    gap: 14px;
  }
  .cookie-banner-actions {
    width: 100%;
    flex-direction: column;
    gap: 8px;
  }
  .cookie-banner-actions .btn {
    width: 100%;
  }
  .modal-overlay {
    padding: 12px;
  }
  .modal-content {
    padding: 24px 16px;
    max-width: 100%;
    border-radius: var(--radius-md);
  }
  .modal-close {
    top: 12px;
    right: 12px;
  }
  .cart-drawer {
    width: 100%;
    max-width: 100%;
    right: -100%;
  }
  .cart-drawer-header {
    padding: 16px 20px;
  }
  .cart-drawer-body {
    padding: 16px 20px;
  }
  .cart-drawer-footer {
    padding: 16px 20px;
  }
  .thank-you-card {
    padding: 28px 16px;
  }
  .product-tabs-wrapper {
    padding: 0 16px 24px;
  }
}

/* Mobile Small (max-width: 480px) */
@media (max-width: 480px) {
  .container {
    padding-left: 14px;
    padding-right: 14px;
  }
  .logo {
    font-size: 1.25rem;
    gap: 8px;
  }
  .logo-icon {
    width: 32px;
    height: 32px;
  }
  .section-title {
    font-size: 1.55rem;
  }
  .section-desc {
    font-size: 0.95rem;
    margin-bottom: 24px;
  }
  .hero-stats {
    grid-template-columns: 1fr;
    gap: 12px;
    text-align: center;
  }
  .hero-card {
    padding: 20px 16px;
  }
  .duochrome-split {
    min-height: 160px;
  }
  .duochrome-red, .duochrome-green {
    font-size: 2.4rem;
  }
  .options-grid {
    grid-template-columns: 1fr;
    gap: 10px;
  }
  .btn {
    padding: 10px 18px;
    font-size: 0.9rem;
  }
  .btn-lg {
    padding: 12px 20px;
    font-size: 1rem;
  }
}