:root {
  --primary: #18181b;
  --primary-hover: #27272a;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --accent-light: #eff6ff;
  --success: #16a34a;
  --danger: #dc2626;
  --warning: #f59e0b;
  --bg-main: #f8fafc;
  --bg-card: #ffffff;
  --border: #e2e8f0;
  --text-main: #0f172a;
  --text-muted: #64748b;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
}

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

body {
  font-family: 'Plus Jakarta Sans', sans-serif;
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
}

.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Announcement Top Bar */
.announcement-bar {
  background: #0f172a;
  color: #cbd5e1;
  font-size: 0.85rem;
  padding: 8px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.bar-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}
.bar-content strong {
  color: #38bdf8;
}

/* Navbar */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}
.nav-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 20px;
}
.logo {
  font-size: 1.5rem;
  font-weight: 800;
  text-decoration: none;
  color: var(--text-main);
  letter-spacing: -0.5px;
}
.logo-accent {
  background: linear-gradient(135deg, #2563eb, #7c3aed);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.search-box {
  flex: 1;
  max-width: 460px;
  position: relative;
}
.search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
}
.search-box input {
  width: 100%;
  padding: 10px 16px 10px 40px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border);
  background: #f1f5f9;
  font-size: 0.9rem;
  outline: none;
  transition: all 0.2s;
}
.search-box input:focus {
  background: #fff;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}
.nav-links {
  display: flex;
  gap: 24px;
}
.nav-links a {
  text-decoration: none;
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.95rem;
  transition: color 0.2s;
}
.nav-links a:hover, .nav-links a.active {
  color: var(--accent);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.action-btn {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  padding: 8px 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  color: var(--text-main);
  transition: all 0.2s;
}
.action-btn:hover {
  background: #f8fafc;
  border-color: #cbd5e1;
}
.badge-tag {
  background: linear-gradient(135deg, #2563eb, #7c3aed);
  color: #fff;
  font-size: 0.72rem;
  padding: 3px 8px;
  border-radius: var(--radius-full);
  font-weight: 700;
}
.cart-btn {
  position: relative;
  padding: 10px 14px;
}
.cart-badge {
  background: var(--danger);
  color: #fff;
  border-radius: var(--radius-full);
  font-size: 0.72rem;
  font-weight: 800;
  padding: 2px 7px;
  margin-left: 2px;
}

/* Hero Section */
.hero-section {
  padding: 50px 0 30px;
}
.hero-content {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 40px;
}
.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #e0f2fe;
  color: #0369a1;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  font-weight: 700;
  margin-bottom: 16px;
}
.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #0284c7;
  box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.3);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(2, 132, 199, 0.5); }
  70% { box-shadow: 0 0 0 8px rgba(2, 132, 199, 0); }
  100% { box-shadow: 0 0 0 0 rgba(2, 132, 199, 0); }
}
.hero-title {
  font-size: 2.8rem;
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 16px;
}
.gradient-text {
  background: linear-gradient(135deg, #2563eb, #9333ea);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-desc {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin-bottom: 24px;
  max-width: 500px;
}
.hero-btns {
  display: flex;
  gap: 14px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s;
  border: none;
}
.btn-primary {
  background: var(--text-main);
  color: #fff;
}
.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.btn-outline {
  background: #fff;
  border: 1px solid var(--border);
  color: var(--text-main);
}
.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-light);
}

.hero-banner-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}
.hero-banner-card img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  display: block;
}
.hero-floating-card {
  position: absolute;
  bottom: 20px;
  left: 20px;
  right: 20px;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  padding: 14px 18px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 14px;
  border: 1px solid rgba(255, 255, 255, 0.4);
}
.bot-avatar-mini {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, #2563eb, #7c3aed);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}
.hero-floating-card strong {
  display: block;
  font-size: 0.95rem;
}
.hero-floating-card p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Features */
.features-section {
  padding: 20px 0 40px;
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}
.feature-card {
  background: var(--bg-card);
  padding: 20px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 16px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s;
}
.feature-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: #f1f5f9;
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}
.feature-card h4 {
  font-size: 0.95rem;
  font-weight: 700;
}
.feature-card p {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* Products Section */
.products-section {
  padding: 40px 0 60px;
}
.section-header {
  margin-bottom: 28px;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 20px;
}
.section-title {
  font-size: 1.9rem;
  font-weight: 800;
  letter-spacing: -0.5px;
}
.section-subtitle {
  color: var(--text-muted);
  font-size: 0.95rem;
}
.filter-controls {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}
.category-tabs {
  display: flex;
  background: #e2e8f0;
  padding: 4px;
  border-radius: var(--radius-full);
  gap: 4px;
}
.tab-btn {
  border: none;
  background: transparent;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s;
}
.tab-btn.active {
  background: #fff;
  color: var(--text-main);
  box-shadow: var(--shadow-sm);
}
.sort-dropdown {
  padding: 8px 14px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border);
  background: #fff;
  font-size: 0.85rem;
  font-weight: 500;
  outline: none;
  cursor: pointer;
}

/* Products Grid */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}
.product-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: all 0.25s ease;
}
.product-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
  border-color: #cbd5e1;
}
.card-media {
  position: relative;
  height: 240px;
  overflow: hidden;
  background: #f1f5f9;
}
.card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.product-card:hover .card-media img {
  transform: scale(1.06);
}
.discount-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background: var(--danger);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 800;
  padding: 4px 8px;
  border-radius: var(--radius-full);
}
.rating-badge {
  position: absolute;
  bottom: 12px;
  left: 12px;
  background: rgba(15, 23, 42, 0.75);
  backdrop-filter: blur(4px);
  color: #fbbf24;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  gap: 4px;
}
.card-body {
  padding: 16px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.card-title {
  font-size: 0.98rem;
  font-weight: 700;
  margin-bottom: 8px;
  line-height: 1.4;
  cursor: pointer;
  transition: color 0.2s;
}
.card-title:hover {
  color: var(--accent);
}
.card-price-row {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 12px;
}
.current-price {
  font-size: 1.15rem;
  font-weight: 800;
  color: #0f172a;
}
.original-price {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-decoration: line-through;
}
.stock-summary-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 14px;
}
.tag-pill {
  font-size: 0.72rem;
  padding: 2px 7px;
  border-radius: 4px;
  background: #f1f5f9;
  color: var(--text-muted);
}
.tag-pill.in-stock {
  background: #dcfce7;
  color: #15803d;
  font-weight: 600;
}
.tag-pill.out-of-stock {
  background: #fee2e2;
  color: #b91c1c;
  font-weight: 600;
}
.card-actions {
  margin-top: auto;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
}
.btn-add-cart {
  padding: 9px 14px;
  font-size: 0.85rem;
}
.btn-ask-ai {
  background: #f1f5f9;
  border: 1px solid var(--border);
  color: #475569;
  padding: 9px 12px;
  border-radius: var(--radius-full);
  cursor: pointer;
  font-size: 0.85rem;
  transition: all 0.2s;
}
.btn-ask-ai:hover {
  background: #eff6ff;
  border-color: #93c5fd;
  color: var(--accent);
}

/* AI Feature Banner */
.ai-feature-banner {
  background: #0f172a;
  color: #fff;
  padding: 60px 0;
  margin: 40px 0;
}
.ai-banner-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 50px;
}
.ai-banner-text h2 {
  font-size: 2.2rem;
  font-weight: 800;
  margin: 14px 0;
  line-height: 1.25;
}
.ai-banner-text p {
  color: #94a3b8;
  font-size: 1rem;
  margin-bottom: 20px;
}
.ai-perks {
  list-style: none;
  margin-bottom: 24px;
}
.ai-perks li {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
  color: #e2e8f0;
  font-size: 0.92rem;
}
.ai-perks i {
  color: #38bdf8;
}
.ai-mockup {
  background: #1e293b;
  border: 1px solid #334155;
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-xl);
}
.mockup-chat-bubble {
  padding: 12px 16px;
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  font-size: 0.9rem;
}
.mockup-chat-bubble.user {
  background: #2563eb;
  color: #fff;
  margin-left: 20%;
  border-bottom-right-radius: 4px;
}
.mockup-chat-bubble.bot {
  background: #334155;
  color: #f1f5f9;
  margin-right: 15%;
  border-bottom-left-radius: 4px;
  border-left: 3px solid #38bdf8;
}
.bot-header-micro {
  font-size: 0.75rem;
  color: #38bdf8;
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Footer */
.footer {
  background: #fff;
  border-top: 1px solid var(--border);
  padding: 50px 0 20px;
  color: var(--text-muted);
}
.footer-content {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 30px;
  margin-bottom: 30px;
}
.footer-col h4 {
  color: var(--text-main);
  font-size: 1rem;
  margin-bottom: 16px;
}
.footer-col ul {
  list-style: none;
}
.footer-col ul li {
  margin-bottom: 8px;
}
.footer-col ul a {
  text-decoration: none;
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: color 0.2s;
}
.footer-col ul a:hover {
  color: var(--accent);
}
.status-pill-footer {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #f1f5f9;
  border: 1px solid var(--border);
  padding: 6px 12px;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  margin-top: 12px;
  color: var(--text-main);
}
.status-dot-green {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #16a34a;
}
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 20px;
  font-size: 0.85rem;
  text-align: center;
}

/* Cart Drawer */
.cart-drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(4px);
  z-index: 200;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s;
}
.cart-drawer-overlay.active {
  opacity: 1;
  visibility: visible;
}
.cart-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  max-width: 420px;
  background: #fff;
  z-index: 201;
  transform: translateX(100%);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  flex-direction: column;
  box-shadow: -10px 0 25px rgba(0, 0, 0, 0.1);
}
.cart-drawer.active {
  transform: translateX(0);
}
.cart-header {
  padding: 18px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.close-btn {
  background: none;
  border: none;
  font-size: 1.6rem;
  cursor: pointer;
  color: var(--text-muted);
}
.cart-items {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
}
.cart-item {
  display: flex;
  gap: 14px;
  padding-bottom: 16px;
  margin-bottom: 16px;
  border-bottom: 1px solid #f1f5f9;
}
.cart-item img {
  width: 70px;
  height: 70px;
  border-radius: var(--radius-sm);
  object-fit: cover;
}
.cart-item-info {
  flex: 1;
}
.cart-item-title {
  font-size: 0.9rem;
  font-weight: 700;
  line-height: 1.3;
}
.cart-item-variant {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin: 3px 0;
}
.cart-item-price {
  font-weight: 700;
  color: var(--text-main);
  font-size: 0.9rem;
}
.qty-controls {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 6px;
}
.qty-btn {
  width: 24px;
  height: 24px;
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 4px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
}
.cart-footer {
  padding: 20px;
  border-top: 1px solid var(--border);
  background: #f8fafc;
}
.cart-summary-line {
  display: flex;
  justify-content: space-between;
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 6px;
}
.cart-summary-total {
  display: flex;
  justify-content: space-between;
  font-size: 1.15rem;
  font-weight: 800;
  margin: 12px 0 16px;
  color: var(--text-main);
}
.btn-block {
  width: 100%;
}

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  z-index: 300;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.modal-overlay.active {
  display: flex;
}
.modal-card {
  background: #fff;
  border-radius: var(--radius-lg);
  max-width: 600px;
  width: 100%;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}
.modal-close-btn {
  position: absolute;
  top: 14px;
  right: 14px;
  background: rgba(0, 0, 0, 0.05);
  border: none;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
}
.modal-body {
  padding: 24px;
}

/* Responsive */
@media (max-width: 900px) {
  .hero-content, .ai-banner-container {
    grid-template-columns: 1fr;
  }
  .nav-links {
    display: none;
  }
  .footer-content {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 600px) {
  .search-box {
    display: none;
  }
  .footer-content {
    grid-template-columns: 1fr;
  }
}