/* Global Styles & CSS Variables */
:root {
  --primary-color: #6b4b9f;
  --primary-dark: #563b7f;
  --background-light: #ffffff;
  --background-dark: #121212;
  --surface-light: #f5f5f5;
  --surface-dark: #1e1e1e;
  --text-light: #212121;
  --text-dark: #e0e0e0;
  --text-secondary-light: #757575;
  --text-secondary-dark: #b0b0b0;
  --border-light: #e0e0e0;
  --border-dark: #333333;
  --shadow-light: rgba(0, 0, 0, 0.1);
  --shadow-dark: rgba(0, 0, 0, 0.3);
  --success: #4caf50;
  --error: #f44336;
  --warning: #ff9800;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  line-height: 1.6;
  background-color: var(--background-light);
  color: var(--text-light);
  transition: background-color 0.3s ease, color 0.3s ease;
}

body.dark-mode {
  background-color: var(--background-dark);
  color: var(--text-dark);
}

/* Splash Screen */
.splash-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--primary-color);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity 1s ease;
}

.splash-screen.fade-out {
  opacity: 0;
}

.splash-logo {
  width: 100px;
  height: 100px;
  margin-bottom: 20px;
  animation: pulse 2s infinite;
}

.splash-loader {
  width: 40px;
  height: 40px;
  border: 4px solid rgba(255, 255, 255, 0.3);
  border-top: 4px solid white;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes pulse {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.1);
  }
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

/* Header */
.header {
  position: sticky;
  top: 0;
  background-color: var(--background-light);
  border-bottom: 1px solid var(--border-light);
  padding: 14px 8px;
  z-index: 100;
  transition: background-color 0.3s ease;
}

body.dark-mode .header {
  background-color: var(--surface-dark);
  border-bottom-color: var(--border-dark);
}

.header-content {
  max-width: 1900px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo-section {
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo-symbol {
  width: 60px;
  height: 60px;
  object-fit: contain;
}

.logo-text {
  width: 115px;
  height: 30px;
  object-fit: fill;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0;
}

.action-btn {
  width: 40px;
  height: 40px;
  border: none;
  background: transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: background-color 0.2s ease;
  color: var(--text-light);
}

body.dark-mode .action-btn {
  color: var(--text-dark);
}

.action-btn:hover {
  background-color: var(--surface-light);
}

body.dark-mode .action-btn:hover {
  background-color: var(--surface-dark);
}

/* Banner Carousel */
.banner-section {
  position: relative;
  max-width: 1900px;
  margin: 0 auto;
  height: 212px;
  overflow: hidden;
}

.banner-carousel {
  position: relative;
  width: 100%;
  height: 100%;
}

.banner-slide {
  position: absolute;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 0.5s ease-in-out;
}

.banner-slide.active {
  opacity: 1;
}

.banner-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.banner-content {
  position: absolute;
  bottom: 20px;
  left: 20px;
  color: white;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.7);
}

.banner-title {
  font-size: 28px;
  font-weight: bold;
  margin-bottom: 5px;
}

.banner-subtitle {
  font-size: 16px;
}

.banner-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(0, 0, 0, 0.5);
  color: white;
  border: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.3s ease;
}

.banner-nav:hover {
  background: rgba(0, 0, 0, 0.7);
}

.banner-nav.prev {
  left: 10px;
}

.banner-nav.next {
  right: 10px;
}

.banner-indicators {
  position: absolute;
  bottom: 10px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
}

.indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.5);
  cursor: pointer;
  transition: background-color 0.3s ease;
}

.indicator.active {
  background: white;
}

/* Product Sections */
.product-section {
  max-width: 1900px;
  margin: 30px auto;
  padding: 0 7px;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  padding: 8px 0;
}

.section-title {
  font-size: 20px;
  font-weight: bold;
}

.see-all-btn {
  padding: 4px 10px;
  border: 2px solid var(--text-light);
  background: transparent;
  border-radius: 16px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.3s ease;
  color: var(--text-light);
}

body.dark-mode .see-all-btn {
  border-color: var(--text-dark);
  color: var(--text-dark);
}

.see-all-btn:hover {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
  color: white;
}

/* Product List (Horizontal) */
.product-list {
  display: flex;
  gap: 12px;
  overflow-x: auto;
  scroll-behavior: smooth;
  padding-bottom: 10px;
  scrollbar-width: thin;
  scrollbar-color: var(--primary-color) var(--surface-light);
}

.product-list::-webkit-scrollbar {
  height: 6px;
}

.product-list::-webkit-scrollbar-track {
  background: var(--surface-light);
}

body.dark-mode .product-list::-webkit-scrollbar-track {
  background: var(--surface-dark);
}

.product-list::-webkit-scrollbar-thumb {
  background: var(--primary-color);
  border-radius: 3px;
}

/* Product Grid (Vertical) */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 12px;
}

/* Product Card */
.product-card {
  background: white;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 8px var(--shadow-light);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  min-width: 160px;
}

body.dark-mode .product-card {
  background: var(--surface-dark);
  box-shadow: 0 2px 8px var(--shadow-dark);
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 4px 12px var(--shadow-light);
}

body.dark-mode .product-card:hover {
  box-shadow: 0 4px 12px var(--shadow-dark);
}

.product-image-container {
  position: relative;
  width: 100%;
  padding-top: 100%;
  overflow: hidden;
}

.product-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product-badge {
  position: absolute;
  top: 10px;
  left: 10px;
  background: var(--primary-color);
  color: white;
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: bold;
}

.favorite-btn {
  position: absolute;
  top: 10px;
  right: 5px;
  background: rgba(255, 255, 255, 0.9);
  border: none;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s ease;
}

.favorite-btn:hover {
  transform: scale(1.1);
}

.favorite-icon {
  color: #757575;
  font-size: 20px;
}

.favorite-icon.active {
  color: var(--primary-color);
}

.product-info {
  padding: 11px;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.product-name {
  font-size: 14px;
  font-weight: 400;
  line-height: 1.2;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.product-category {
  font-size: 11px;
  color: var(--text-secondary-light);
  line-height: 1.2;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

body.dark-mode .product-category {
  color: var(--text-secondary-dark);
}

.product-price-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 3px;
}

.product-price {
  font-size: 14px;
  font-weight: 500;
}

.product-old-price {
  font-size: 12px;
  text-decoration: line-through;
  color: var(--text-secondary-light);
  margin-left: 8px;
}

body.dark-mode .product-old-price {
  color: var(--text-secondary-dark);
}

.add-to-cart-btn {
  background: var(--primary-color);
  color: white;
  border: none;
  padding: 6px 10px;
  border-radius: 6px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.2s ease;
}

.add-to-cart-btn:hover {
  background: var(--primary-dark);
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1000;
}

.modal.active {
  display: block;
}

.modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
}

.modal-content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: white;
  padding: 30px;
  border-radius: 12px;
  max-width: 900px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
}

body.dark-mode .modal-content {
  background: var(--surface-dark);
}

.modal-close {
  position: absolute;
  top: 15px;
  right: 15px;
  background: transparent;
  border: none;
  font-size: 32px;
  cursor: pointer;
  color: var(--text-light);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: background-color 0.2s ease;
}

body.dark-mode .modal-close {
  color: var(--text-dark);
}

.modal-close:hover {
  background: var(--surface-light);
}

body.dark-mode .modal-close:hover {
  background: var(--surface-dark);
}

.modal-product-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
}

.modal-product-image {
  width: 100%;
  border-radius: 8px;
}

.modal-product-details h1 {
  font-size: 28px;
  margin-bottom: 15px;
}

.modal-product-price {
  font-size: 24px;
  color: var(--primary-color);
  margin-bottom: 10px;
}

.modal-discount-info {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
}

.modal-discount-badge {
  background: var(--primary-color);
  color: white;
  padding: 4px 8px;
  border-radius: 4px;
  font-weight: bold;
}

.modal-old-price {
  text-decoration: line-through;
  color: var(--text-secondary-light);
}

body.dark-mode .modal-old-price {
  color: var(--text-secondary-dark);
}

.modal-buttons {
  display: flex;
  gap: 15px;
  margin-top: 20px;
}

.modal-btn {
  flex: 1;
  padding: 12px 24px;
  border: none;
  border-radius: 6px;
  font-size: 16px;
  font-weight: 500;
  cursor: pointer;
  transition: background-color 0.2s ease;
}

.modal-btn-primary {
  background: var(--primary-color);
  color: white;
}

.modal-btn-primary:hover {
  background: var(--primary-dark);
}

.modal-btn-secondary {
  background: var(--surface-light);
  color: var(--text-light);
}

body.dark-mode .modal-btn-secondary {
  background: var(--surface-dark);
  color: var(--text-dark);
}

.modal-product-description {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--border-light);
}

body.dark-mode .modal-product-description {
  border-top-color: var(--border-dark);
}

/* Footer */
.footer {
  background: var(--surface-light);
  padding: 40px 20px 20px;
  margin-top: 50px;
}

body.dark-mode .footer {
  background: var(--surface-dark);
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  margin-bottom: 30px;
}

.footer-section h3 {
  margin-bottom: 15px;
  color: var(--primary-color);
}

.footer-section ul {
  list-style: none;
}

.footer-section a {
  color: var(--text-light);
  text-decoration: none;
  transition: color 0.2s ease;
}

body.dark-mode .footer-section a {
  color: var(--text-dark);
}

.footer-section a:hover {
  color: var(--primary-color);
}

.footer-bottom {
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid var(--border-light);
  color: var(--text-secondary-light);
}

body.dark-mode .footer-bottom {
  border-top-color: var(--border-dark);
  color: var(--text-secondary-dark);
}

/* Redirect Message */
.redirect-message {
  position: fixed;
  top: 20px;
  right: 20px;
  background: var(--success);
  color: white;
  padding: 15px 25px;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
  opacity: 0;
  transform: translateX(400px);
  transition: opacity 0.3s ease, transform 0.3s ease;
  z-index: 2000;
}

.redirect-message.message-visible {
  opacity: 1;
  transform: translateX(0);
}

/* Responsive Design */
@media (min-width: 768px) {
  .header {
    padding: 16px 20px;
  }

  .logo-symbol {
    width: 72px;
    height: 72px;
  }

  .logo-text {
    width: 140px;
    height: 34px;
  }

  .header-actions {
    gap: 10px;
  }

  .action-btn svg {
    width: 21px;
    height: 21px;
  }

  .banner-section {
    height: 200px;
  }

  .product-section {
    padding: 0 18px;
    margin: 35px auto;
  }

  .section-header {
    padding: 12px 0;
  }

  .section-title {
    font-size: 22px;
  }

  .see-all-btn {
    font-size: 15px;
  }

  .product-grid {
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  }
}

@media (min-width: 1024px) {
  .header {
    padding: 16px 24px;
  }

  .logo-symbol {
    width: 80px;
    height: 80px;
  }

  .logo-text {
    width: 150px;
    height: 36px;
  }

  .header-actions {
    gap: 12px;
  }

  .action-btn svg {
    width: 22px;
    height: 22px;
  }

  .banner-section {
    height: 220px;
  }

  .product-section {
    padding: 0 32px;
    margin: 35px auto;
  }

  .section-title {
    font-size: 24px;
  }

  .see-all-btn {
    font-size: 16px;
  }

  .product-grid {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
  }

  .product-card {
    border-radius: 12px;
  }
}