/* SoGood - Dark Luxury Theme */
:root {
  --bg-primary: #0a0a0a;
  --bg-secondary: #111111;
  --bg-card: #161616;
  --bg-hover: #1c1c1c;
  --text-primary: #f5f5f5;
  --text-secondary: #a0a0a0;
  --text-muted: #666666;
  --accent: #c9a227;
  --accent-hover: #d4b84a;
  --accent-dark: #a6851f;
  --border: #2a2a2a;
  --success: #2d6a4f;
  --danger: #9b2226;
  --font-sans: "Noto Sans TC", "Microsoft JhengHei", "PingFang TC", "Helvetica Neue", Arial, sans-serif;
  --transition: all 0.3s ease;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  --radius: 4px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

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

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

/* Header */
.header {
  background: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--accent);
  text-transform: uppercase;
}

.logo span {
  color: var(--text-primary);
  font-weight: 300;
}

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  font-size: 0.9rem;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
  position: relative;
  padding: 4px 0;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--accent);
}

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--accent);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 20px;
}

.cart-link {
  position: relative;
  font-size: 1.25rem;
  color: var(--text-secondary);
}

.cart-link:hover {
  color: var(--accent);
}

.cart-count {
  position: absolute;
  top: -8px;
  right: -10px;
  background: var(--accent);
  color: #000;
  font-size: 0.7rem;
  font-weight: 700;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  display: none;
  align-items: center;
  justify-content: center;
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Hero */
.hero {
  position: relative;
  height: 70vh;
  min-height: 480px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #0a0a0a 0%, #1a1a1a 50%, #0d0d0d 100%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(201, 162, 39, 0.08) 0%, transparent 70%);
}

.hero-content {
  text-align: center;
  z-index: 1;
  padding: 0 24px;
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 300;
  letter-spacing: 0.2em;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.hero h1 strong {
  font-weight: 700;
  color: var(--accent);
}

.hero p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 32px;
  letter-spacing: 0.1em;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 36px;
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
  text-transform: uppercase;
}

.btn-primary {
  background: var(--accent);
  color: #000;
  font-weight: 600;
}

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--accent);
  color: var(--accent);
}

.btn-outline:hover {
  background: var(--accent);
  color: #000;
}

/* Section */
.section {
  max-width: 1400px;
  margin: 0 auto;
  padding: 80px 24px;
}

.section-title {
  text-align: center;
  margin-bottom: 48px;
}

.section-title h2 {
  font-size: 1.75rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  margin-bottom: 12px;
}

.section-title p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.section-title .line {
  width: 40px;
  height: 1px;
  background: var(--accent);
  margin: 16px auto 0;
}

/* Product Grid */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 32px;
}

.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: var(--transition);
  overflow: hidden;
}

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

.product-image {
  position: relative;
  aspect-ratio: 4/5;
  overflow: hidden;
  background: #1a1a1a;
}

.product-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

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

.discount-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background: var(--accent);
  color: #000;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 10px;
}

.product-info {
  padding: 20px;
}

.product-category {
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 6px;
}

.product-name {
  font-size: 1rem;
  font-weight: 500;
  margin-bottom: 12px;
  line-height: 1.4;
}

.product-name a:hover {
  color: var(--accent);
}

.product-price {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.current-price {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--accent);
}

.original-price {
  font-size: 0.9rem;
  color: var(--text-muted);
  text-decoration: line-through;
}

.btn-add-cart {
  width: 100%;
  padding: 12px;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
}

.btn-add-cart:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(201, 162, 39, 0.05);
}

/* Category Banner */
.category-banner {
  background: var(--bg-secondary);
  padding: 60px 24px;
  text-align: center;
  border-bottom: 1px solid var(--border);
}

.category-banner h1 {
  font-size: 2rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  margin-bottom: 8px;
}

.category-banner p {
  color: var(--text-secondary);
}

/* Product Detail */
.product-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 60px 24px;
}

.product-detail-image {
  aspect-ratio: 4/5;
  background: var(--bg-card);
  border: 1px solid var(--border);
  overflow: hidden;
}

.product-detail-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product-detail-info h1 {
  font-size: 1.75rem;
  font-weight: 500;
  margin-bottom: 8px;
}

.product-detail-info .category {
  color: var(--text-muted);
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  margin-bottom: 20px;
}

.product-detail-info .price-row {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}

.product-detail-info .current-price {
  font-size: 1.5rem;
}

.product-detail-info .description {
  color: var(--text-secondary);
  margin-bottom: 28px;
  line-height: 1.8;
}

.product-details-list {
  list-style: none;
  margin-bottom: 28px;
}

.product-details-list li {
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.product-details-list li span {
  color: var(--text-primary);
  margin-right: 12px;
}

.size-selector {
  margin-bottom: 28px;
}

.size-selector label {
  display: block;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  margin-bottom: 12px;
  color: var(--text-secondary);
}

.size-options {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.size-option {
  min-width: 48px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 0.9rem;
  transition: var(--transition);
  font-family: inherit;
}

.size-option:hover,
.size-option.selected {
  border-color: var(--accent);
  color: var(--accent);
}

.qty-selector {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 28px;
}

.qty-selector label {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.qty-controls {
  display: flex;
  align-items: center;
  border: 1px solid var(--border);
}

.qty-controls button {
  width: 40px;
  height: 40px;
  background: transparent;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  font-size: 1.1rem;
}

.qty-controls input {
  width: 50px;
  height: 40px;
  text-align: center;
  background: transparent;
  border: none;
  border-left: 1px solid var(--border);
  border-right: 1px solid var(--border);
  color: var(--text-primary);
  font-size: 1rem;
  font-family: inherit;
}

.detail-actions {
  display: flex;
  gap: 16px;
}

.detail-actions .btn {
  flex: 1;
}

/* Cart Page */
.cart-table {
  width: 100%;
  border-collapse: collapse;
}

.cart-table th {
  text-align: left;
  padding: 16px;
  border-bottom: 1px solid var(--border);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  font-weight: 500;
}

.cart-table td {
  padding: 20px 16px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

.cart-item-info {
  display: flex;
  align-items: center;
  gap: 16px;
}

.cart-item-info img {
  width: 80px;
  height: 100px;
  object-fit: cover;
  background: var(--bg-card);
}

.cart-item-name {
  font-weight: 500;
  margin-bottom: 4px;
}

.cart-item-size {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.cart-summary {
  max-width: 400px;
  margin-left: auto;
  margin-top: 40px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 28px;
}

.cart-summary h3 {
  font-size: 1.1rem;
  margin-bottom: 20px;
  letter-spacing: 0.08em;
}

.summary-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 12px;
  font-size: 0.95rem;
}

.summary-row.total {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--accent);
  border-top: 1px solid var(--border);
  padding-top: 16px;
  margin-top: 16px;
}

.empty-cart {
  text-align: center;
  padding: 80px 24px;
  color: var(--text-secondary);
}

.empty-cart h2 {
  margin-bottom: 16px;
  color: var(--text-primary);
}

/* Checkout */
.checkout-form {
  max-width: 600px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
  letter-spacing: 0.05em;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 14px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-primary);
  font-size: 1rem;
  font-family: inherit;
  transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
}

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

/* About & Contact */
.content-page {
  max-width: 800px;
  margin: 0 auto;
  padding: 60px 24px;
}

.content-page h1 {
  font-size: 2rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  margin-bottom: 24px;
  text-align: center;
}

.content-page p {
  color: var(--text-secondary);
  margin-bottom: 20px;
  line-height: 1.9;
}

.content-page h2 {
  font-size: 1.25rem;
  margin: 40px 0 16px;
  color: var(--accent);
}

/* Footer */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 60px 24px 30px;
  margin-top: 80px;
}

.footer-inner {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
}

.footer-brand .logo {
  margin-bottom: 16px;
  display: inline-block;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.7;
}

.footer h4 {
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  margin-bottom: 20px;
  color: var(--text-primary);
}

.footer ul {
  list-style: none;
}

.footer ul li {
  margin-bottom: 10px;
}

.footer ul a {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer ul a:hover {
  color: var(--accent);
}

.footer-bottom {
  max-width: 1400px;
  margin: 40px auto 0;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* Toast */
.toast {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--accent);
  color: #000;
  padding: 14px 28px;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  z-index: 9999;
  opacity: 0;
  transition: all 0.3s ease;
  pointer-events: none;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* Responsive */
@media (max-width: 900px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    flex-direction: column;
    padding: 24px;
    border-bottom: 1px solid var(--border);
    gap: 16px;
  }

  .nav-links.open {
    display: flex;
  }

  .mobile-menu-btn {
    display: block;
  }

  .product-detail {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  .product-grid {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }

  .footer-inner {
    grid-template-columns: 1fr;
  }

  .cart-table thead {
    display: none;
  }

  .cart-table td {
    display: block;
    padding: 8px 0;
  }

  .detail-actions {
    flex-direction: column;
  }
}