/* === Common Styles === */
:root {
  --primary: #4F46E5;
  --primary-dark: #4338CA;
  --primary-light: #6366F1;
  --accent: #EC4899;
  --bg: #FFFFFF;
  --bg-secondary: #F8FAFC;
  --bg-dark: #0F172A;
  --text: #1E293B;
  --text-secondary: #64748B;
  --text-light: #94A3B8;
  --border: #E2E8F0;
  --border-light: #F1F5F9;
  --success: #10B981;
  --warning: #F59E0B;
  --danger: #EF4444;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 16px;
  --max-width: 1200px;
  --header-height: 64px;
  --transition: all 0.2s ease;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  padding-bottom: 70px;
}

a {
  color: inherit;
  text-decoration: none;
}

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

button {
  cursor: pointer;
  border: none;
  background: none;
  font: inherit;
  color: inherit;
}

ul,
ol {
  list-style: none;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 14px;
  transition: var(--transition);
  white-space: nowrap;
}

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

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

.btn-secondary {
  background: var(--bg-secondary);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: var(--border-light);
}

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

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

.btn-lg {
  padding: 14px 28px;
  font-size: 16px;
  border-radius: var(--radius);
}

/* Badges */
.badge-discount {
  display: inline-block;
  background: var(--primary);
  color: white;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 700;
}

.badge-half {
  display: inline-block;
  background: var(--accent);
  color: white;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 700;
}

.badge-promo {
  display: inline-block;
  background: #FEF3C7;
  color: #92400E;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 600;
}

/* Sections */
.section {
  padding: 60px 0;
}

.section-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

.section-title {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 8px;
}

.section-desc {
  color: var(--text-secondary);
  margin-bottom: 24px;
}

/* Product Grid */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}

/* Product Card */
.product-card {
  display: block;
  background: white;
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}

.product-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.product-card-img {
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: var(--bg-secondary);
}

.product-card-img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.product-card-info {
  padding: 16px;
}

.product-card-badges {
  display: flex;
  gap: 4px;
  margin-bottom: 8px;
  flex-wrap: wrap;
}

.product-card-brand {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
}

.product-card-name {
  font-size: 15px;
  font-weight: 600;
  margin: 4px 0 10px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.product-card-price {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.price-label {
  font-size: 12px;
  color: var(--text-light);
}

.price-value {
  font-size: 16px;
  font-weight: 700;
  color: var(--primary);
}

.product-card-review {
  margin-top: 8px;
  font-size: 13px;
  color: var(--text-secondary);
}

.review-star {
  color: #F59E0B;
}

.review-count {
  color: var(--text-light);
}

/* Modal */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1000;
  align-items: center;
  justify-content: center;
}

.modal-overlay.active {
  display: flex;
}

.modal-content {
  background: white;
  border-radius: var(--radius-lg);
  max-width: 480px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
}

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

.modal-header h3 {
  font-size: 18px;
  font-weight: 700;
}

.modal-close {
  font-size: 24px;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
}

.modal-close:hover {
  background: var(--bg-secondary);
}

.modal-body {
  padding: 24px;
}

.modal-desc {
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.estimate-categories {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.estimate-cat-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 16px 8px;
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  transition: var(--transition);
}

.estimate-cat-btn:hover {
  background: #EEF2FF;
  color: var(--primary);
}

.cat-icon {
  font-size: 24px;
}

/* Error */
.error {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-secondary);
}

.no-data {
  text-align: center;
  padding: 40px;
  color: var(--text-light);
}

/* Responsive */
@media (max-width: 768px) {
  .product-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .section {
    padding: 40px 0;
  }

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

  .estimate-categories {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 480px) {
  .product-grid {
    grid-template-columns: 1fr;
  }
}