:root {
  --primary-blue: #0046be;
  --dark-blue: #003399;
  --yellow: #ffe000;
  --yellow-hover: #ffcc00;
  --text-main: #1d252c;
  --text-muted: #55555a;
  --bg-color: #f0f2f4;
  --white: #ffffff;
  --border-color: #c8cbd0;
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-family);
  background-color: var(--white);
  color: var(--text-main);
  line-height: 1.5;
}

a {
  text-decoration: none;
  color: var(--primary-blue);
}

a:hover {
  text-decoration: underline;
}

/* Header Styles */
.header-top {
  background-color: var(--dark-blue);
  color: var(--white);
  padding: 8px 5%;
  display: flex;
  justify-content: flex-end;
  font-size: 13px;
  gap: 20px;
}
.header-top a {
  color: var(--white);
  text-decoration: none;
}

.header-main {
  background: linear-gradient(90deg, var(--dark-blue), var(--primary-blue));
  color: var(--white);
  padding: 15px 5%;
  display: flex;
  align-items: center;
  gap: 30px;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

.logo-container {
  display: flex;
  align-items: baseline;
  font-weight: 900;
  font-size: 32px;
  letter-spacing: -1px;
}
.logo-tag {
  background-color: var(--yellow);
  width: 15px;
  height: 15px;
  border-radius: 50% 50% 50% 0;
  display: inline-block;
  margin-left: 5px;
}

.menu-trigger {
  color: var(--white);
  font-weight: 600;
  font-size: 18px;
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}
.menu-trigger i { font-size: 24px; }

.search-bar {
  flex-grow: 1;
  display: flex;
  background-color: var(--white);
  border-radius: 4px;
  overflow: hidden;
  height: 44px;
}
.search-bar input {
  width: 100%;
  border: none;
  padding: 10px 15px;
  font-size: 16px;
  outline: none;
}
.search-bar button {
  background-color: var(--white);
  border: none;
  padding: 0 15px;
  cursor: pointer;
  color: var(--primary-blue);
}

.header-actions {
  display: flex;
  gap: 25px;
  align-items: center;
  font-weight: 600;
}
.header-actions .action-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  color: var(--white);
  font-size: 14px;
  cursor: pointer;
}

.header-bottom {
  background-color: var(--primary-blue);
  color: var(--white);
  padding: 10px 5%;
  display: flex;
  gap: 20px;
  font-size: 14px;
  border-top: 1px solid rgba(255,255,255,0.2);
}
.header-bottom a { color: var(--white); }

/* Breadcrumbs */
.breadcrumb {
  padding: 15px 5%;
  font-size: 13px;
  color: var(--text-muted);
}
.breadcrumb a { color: var(--primary-blue); }

/* Main Product Layout */
.product-container {
  display: flex;
  padding: 20px 5%;
  gap: 40px;
  max-width: 1400px;
  margin: 0 auto;
}

.product-gallery {
  flex: 1.2;
  display: flex;
  gap: 20px;
}
.gallery-thumbnails {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.thumb {
  width: 60px;
  height: 60px;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  background: white;
  transition: all 0.2s ease;
}
.thumb:hover { 
  border-color: var(--primary-blue); 
  border-width: 2px;
  transform: translateY(-3px);
  box-shadow: 0 4px 8px rgba(0, 70, 190, 0.15);
}
.thumb img { max-width: 100%; max-height: 100%; object-fit: contain; }

.main-image {
  flex-grow: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
}
.main-image img { 
  width: 100%; 
  max-width: 600px; 
  height: auto; 
  object-fit: contain; 
  transition: transform 0.4s ease;
}
.main-image:hover img {
  transform: scale(1.03);
}

/* Product Details */
.product-details {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 15px;
}
.brand-tag {
  color: var(--primary-blue);
  font-size: 14px;
  font-weight: 600;
}
.product-title {
  font-size: 24px;
  font-weight: 600;
  line-height: 1.3;
}
.model-sku {
  font-size: 13px;
  color: var(--text-muted);
  display: flex;
  gap: 15px;
}
.rating {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
}
.stars {
  color: #ffb700;
  font-size: 16px;
  font-weight: bold;
}
.price-section {
  padding: 20px 0;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  margin-top: 10px;
}
.price {
  font-size: 32px;
  font-weight: bold;
}
.price span { font-size: 14px; color: var(--text-muted); font-weight: normal;}

@keyframes shine {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

@keyframes pulse-green {
  0% { box-shadow: 0 0 0 0 rgba(46, 139, 87, 0.6); transform: scale(1); }
  50% { box-shadow: 0 0 0 6px rgba(46, 139, 87, 0); transform: scale(1.1); }
  100% { box-shadow: 0 0 0 0 rgba(46, 139, 87, 0); transform: scale(1); }
}

.cta-button {
  background-color: var(--yellow);
  color: #000;
  border: none;
  padding: 16px;
  font-size: 18px;
  font-weight: 600;
  border-radius: 4px;
  cursor: pointer;
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  transition: all 0.3s ease;
  margin-top: 20px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 6px rgba(255, 224, 0, 0.2);
}

.cta-button::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, rgba(255,255,255,0) 0%, rgba(255,255,255,0.6) 50%, rgba(255,255,255,0) 100%);
  transform: translateX(-100%);
}

.cta-button:hover {
  background-color: var(--yellow-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 12px rgba(255, 224, 0, 0.4);
}

.cta-button:hover::after {
  animation: shine 0.8s ease-in-out forwards;
}

.finance-opts {
  font-size: 14px;
  color: var(--text-main);
  padding: 15px 0;
  border-bottom: 1px solid var(--border-color);
}
.finance-opts strong { color: var(--primary-blue); cursor: pointer; }

/* Reviews Section */
.reviews-section {
  padding: 40px 5%;
  max-width: 1400px;
  margin: 0 auto;
  border-top: 1px solid var(--border-color);
  display: flex;
  gap: 50px;
}
.review-summary {
  flex: 1;
}
.review-summary h2 { font-size: 24px; margin-bottom: 20px; }
.review-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
  font-size: 14px;
}
.bar-track {
  flex-grow: 1;
  height: 8px;
  background-color: #e0e6ef;
  border-radius: 4px;
  overflow: hidden;
}
.bar-fill {
  background-color: var(--primary-blue);
  height: 100%;
}

.review-features {
  flex: 2;
}
.feature-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 15px;
}
.tag {
  background-color: #f0f2f4;
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
  border: 1px solid #d3d7dc;
  transition: all 0.2s ease;
}
.tag:hover {
  transform: translateY(-2px);
  box-shadow: 0 3px 6px rgba(0,0,0,0.1);
}
.tag.positive { border-color: #2e8b57; color: #2e8b57; }

/* Comparison Section */
.comparison-section {
  padding: 40px 5%;
  max-width: 1400px;
  margin: 0 auto;
  border-top: 1px solid var(--border-color);
}
.comparison-section h2 { font-size: 24px; margin-bottom: 20px; text-align: center; }
.compare-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 20px;
  background: white;
}
.compare-table th, .compare-table td {
  padding: 15px;
  border: 1px solid var(--border-color);
  text-align: center;
}
.compare-table th { background-color: var(--bg-color); font-weight: 700; color: var(--text-main); }
.compare-table td:first-child { text-align: left; font-weight: 600; }
.compare-highlight { background-color: #f6faff; border: 2px solid var(--primary-blue) !important; }

/* FAQ Section */
.faq-section {
  padding: 40px 5%;
  max-width: 1400px;
  margin: 0 auto;
  border-top: 1px solid var(--border-color);
}
.faq-section h2 { font-size: 24px; margin-bottom: 20px; text-align: center; }
.faq-item {
  border-bottom: 1px solid var(--border-color);
  padding: 15px 0;
}
.faq-question {
  font-weight: 600;
  font-size: 16px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--primary-blue);
}
.faq-answer {
  font-size: 14px;
  color: var(--text-muted);
  margin-top: 10px;
  line-height: 1.6;
}

/* Footer */
.footer {
  background-color: var(--bg-color);
  padding: 40px 5% 20px;
  margin-top: 50px;
  border-top: 1px solid var(--border-color);
}
.footer-services {
  display: flex;
  justify-content: space-between;
  text-align: center;
  padding-bottom: 30px;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 30px;
}
.service-icon {
  font-size: 30px;
  margin-bottom: 10px;
  color: var(--primary-blue);
}
.service-title { font-size: 14px; font-weight: 600; }

.footer-links {
  display: grid;
  grid-template-columns: repeat(4, 1fr) 1.5fr;
  gap: 20px;
  font-size: 13px;
  color: var(--primary-blue);
}
.footer-column h3 {
  color: var(--text-main);
  font-size: 15px;
  margin-bottom: 15px;
}
.footer-column ul { list-style: none; }
.footer-column ul li { margin-bottom: 10px; }

.newsletter {
  background: white;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}
.newsletter input {
  width: 100%;
  padding: 10px;
  border: 1px solid var(--border-color);
  margin: 10px 0;
  border-radius: 4px;
}
.newsletter button {
  background: var(--primary-blue);
  color: white;
  padding: 10px;
  width: 100%;
  border: none;
  border-radius: 4px;
  font-weight: 600;
  cursor: pointer;
}

/* Mobile Responsiveness */
@media(max-width: 900px) {
  .product-container { flex-direction: column; }
  .reviews-section { flex-direction: column; }
  .footer-links { grid-template-columns: 1fr 1fr; }
  .footer-services { flex-wrap: wrap; gap: 20px; }
  .service { width: 45%; }
}

@media(max-width: 600px) {
  .header-actions { display: none; }
  .header-bottom { display: none; }
  .footer-links { grid-template-columns: 1fr; }
  .gallery-thumbnails { flex-direction: row; overflow-x: auto; }
}