/* ===== CSS Variables ===== */
:root {
  --primary: #1a4d3e;
  --primary-dark: #0f2e26;
  --primary-light: #d4e8e3;
  --secondary: #f59e0b;
  --success: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;
  --dark: #1e293b;
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;
  --white: #ffffff;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 10px 10px -5px rgba(0,0,0,0.04);
  --radius: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --transition: all 0.2s ease;
}

/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  color: var(--gray-800);
  background: var(--gray-50);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, select, textarea { font-family: inherit; }
ul { list-style: none; }

/* ===== Header ===== */
.header {
  background: var(--white);
  border-bottom: 1px solid var(--gray-200);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}
.header-inner {
  display: flex;
  align-items: center;
  padding: 12px 20px;
  max-width: 1400px;
  margin: 0 auto;
  gap: 24px;
}
.logo {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--primary);
  white-space: nowrap;
  letter-spacing: -0.5px;
}
.logo span { color: var(--secondary); }
.search-bar {
  flex: 1;
  max-width: 600px;
  position: relative;
}
.search-bar input {
  width: 100%;
  padding: 10px 44px 10px 16px;
  border: 2px solid var(--gray-200);
  border-radius: 50px;
  font-size: 0.95rem;
  transition: var(--transition);
  outline: none;
}
.search-bar input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(15,118,110,0.1); }
.search-bar button {
  position: absolute;
  right: 4px;
  top: 50%;
  transform: translateY(-50%);
  background: var(--primary);
  color: white;
  border: none;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}
.search-bar button:hover { background: var(--primary-dark); }
.header-nav { display: flex; align-items: center; gap: 16px; }
.header-nav a {
  font-size: 0.9rem;
  color: var(--gray-600);
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 6px;
}
.header-nav a:hover { color: var(--primary); }

/* ===== Hero Banner ===== */
.hero {
  background: linear-gradient(135deg, #134e4a 0%, #0f766e 50%, #14b8a6 100%);
  color: white;
  padding: 48px 20px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: rgba(255,255,255,0.05);
  border-radius: 50%;
}
.hero h1 { font-size: 2rem; font-weight: 800; margin-bottom: 8px; position: relative; }
.hero p { font-size: 1rem; opacity: 0.9; max-width: 600px; margin: 0 auto 16px; position: relative; }
.company-info {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  background: rgba(255,255,255,0.15);
  padding: 10px 24px;
  border-radius: 50px;
  font-size: 0.9rem;
  position: relative;
}
.company-info .whatsapp { display: flex; align-items: center; gap: 6px; font-weight: 600; }

/* ===== About Section ===== */
.about-section { padding: 48px 0; }
.about-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: 40px;
  box-shadow: var(--shadow);
  border: 1px solid var(--gray-200);
  text-align: center;
}
.about-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 20px;
}
.about-text {
  font-size: 0.95rem;
  color: var(--gray-600);
  line-height: 1.8;
  max-width: 700px;
  margin: 0 auto 12px;
}
.about-contact {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--gray-200);
  font-size: 0.9rem;
  color: var(--gray-700);
  font-weight: 500;
}
.about-contact span { display: flex; align-items: center; gap: 6px; }

/* ===== Categories ===== */
.categories-section { padding: 32px 0; }
.container { max-width: 1400px; margin: 0 auto; padding: 0 20px; }
.section-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.section-title { font-size: 1.25rem; font-weight: 700; color: var(--gray-900); }
.categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 12px;
}
.category-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 16px 10px;
  text-align: center;
  transition: var(--transition);
  cursor: pointer;
}
.category-card:hover { border-color: var(--primary); box-shadow: var(--shadow-md); transform: translateY(-2px); }
.category-card.active { border-color: var(--primary); background: var(--primary-light); }
.category-icon { font-size: 1.75rem; margin-bottom: 6px; }
.category-name { font-size: 0.8rem; font-weight: 600; color: var(--gray-700); }

/* ===== Products Grid (No Price) ===== */
.products-section { padding: 16px 0 60px; }
.products-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 12px;
}
.products-count { color: var(--gray-500); font-size: 0.9rem; }
.sort-select {
  padding: 8px 12px;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius);
  font-size: 0.9rem;
  color: var(--gray-700);
  background: var(--white);
  outline: none;
}
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 20px;
}
.product-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--gray-200);
  transition: var(--transition);
  cursor: pointer;
}
.product-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.product-card-img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  background: var(--gray-100);
}
.product-card-body { padding: 14px; }
.product-card-name {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--gray-800);
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.4;
}
.product-card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--gray-400);
}
.sku-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: var(--gray-100);
  padding: 3px 8px;
  border-radius: 50px;
  font-size: 0.75rem;
}

/* ===== Pagination ===== */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 6px;
  margin-top: 32px;
}
.pagination button {
  padding: 8px 14px;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius);
  font-size: 0.9rem;
  color: var(--gray-600);
  background: var(--white);
  transition: var(--transition);
}
.pagination button:hover { border-color: var(--primary); color: var(--primary); }
.pagination button.active { background: var(--primary); color: white; border-color: var(--primary); }
.pagination button:disabled { opacity: 0.5; cursor: not-allowed; }

/* ===== Product Detail ===== */
.product-detail { padding: 24px 0 60px; }
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 24px;
  font-size: 0.9rem;
  color: var(--gray-500);
}
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb span { color: var(--gray-800); font-weight: 500; }
.detail-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: 28px;
  box-shadow: var(--shadow);
}
.detail-gallery {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--gray-100);
}
.detail-gallery img { width: 100%; aspect-ratio: 1; object-fit: cover; }
.detail-info { display: flex; flex-direction: column; gap: 16px; }
.detail-category { font-size: 0.8rem; color: var(--primary); font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; }
.detail-name { font-size: 1.5rem; font-weight: 700; color: var(--gray-900); line-height: 1.3; }
.detail-meta-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  padding: 16px;
  background: var(--gray-50);
  border-radius: var(--radius);
}
.detail-meta-item { font-size: 0.85rem; }
.detail-meta-item label { color: var(--gray-500); display: block; font-size: 0.75rem; }
.detail-meta-item span { font-weight: 600; color: var(--gray-800); }
.detail-desc { color: var(--gray-600); font-size: 0.9rem; line-height: 1.7; }

/* ===== SKU Section ===== */
.sku-section { margin-top: 20px; }
.sku-section-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.sku-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 12px;
}
.sku-card {
  border: 2px solid var(--gray-200);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  transition: var(--transition);
  background: var(--white);
}
.sku-card:hover { border-color: var(--primary); box-shadow: var(--shadow-md); }
.sku-card.selected { border-color: var(--primary); background: var(--primary-light); }
.sku-card.inactive { opacity: 0.5; cursor: not-allowed; }
.sku-card-img { width: 100%; aspect-ratio: 1; object-fit: cover; background: var(--gray-100); }
.sku-card-body { padding: 10px; }
.sku-card-code { font-size: 0.8rem; font-weight: 600; color: var(--gray-700); font-family: monospace; }
.sku-card-spec { font-size: 0.75rem; color: var(--gray-500); margin: 4px 0; }
.sku-card-stock { font-size: 0.75rem; font-weight: 600; }
.sku-card-stock.in-stock { color: var(--success); }
.sku-card-stock.out-of-stock { color: var(--danger); }
.sku-status-badge {
  display: inline-block;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.65rem;
  font-weight: 600;
  background: var(--gray-200);
  color: var(--gray-600);
}
.sku-status-badge.active { background: #d1fae5; color: #065f46; }

/* ===== Action Buttons ===== */
.action-buttons { display: flex; gap: 12px; margin-top: 20px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 600;
  transition: var(--transition);
  border: none;
  cursor: pointer;
}
.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-outline { background: transparent; border: 2px solid var(--primary); color: var(--primary); }
.btn-outline:hover { background: var(--primary-light); }
.btn-whatsapp { background: #25D366; color: white; }
.btn-whatsapp:hover { background: #1fb855; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* ===== Inquiry Modal ===== */
.modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  animation: fadeIn 0.2s ease;
  padding: 20px;
}
.modal {
  background: var(--white);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 500px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-xl);
  animation: slideUp 0.3s ease;
}
.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  border-bottom: 1px solid var(--gray-200);
}
.modal-header h2 { font-size: 1.1rem; font-weight: 600; }
.modal-close {
  width: 32px; height: 32px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: var(--gray-400);
  transition: var(--transition);
}
.modal-close:hover { background: var(--gray-100); color: var(--gray-600); }
.modal-body { padding: 24px; }
.modal-footer { display: flex; justify-content: flex-end; gap: 12px; padding: 16px 24px; border-top: 1px solid var(--gray-200); }

/* Form */
.form-group { margin-bottom: 16px; }
.form-label { display: block; font-size: 0.85rem; font-weight: 600; color: var(--gray-700); margin-bottom: 6px; }
.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius);
  font-size: 0.9rem;
  color: var(--gray-800);
  outline: none;
  transition: var(--transition);
}
.form-input:focus, .form-select:focus, .form-textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(15,118,110,0.1); }
.form-textarea { resize: vertical; min-height: 80px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

/* Selected SKU Info */
.selected-sku-info {
  background: var(--primary-light);
  padding: 12px 16px;
  border-radius: var(--radius);
  margin-bottom: 16px;
  font-size: 0.9rem;
}
.selected-sku-info strong { color: var(--primary); }

/* ===== Related Products ===== */
.related-section { padding: 32px 0 60px; }
.related-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }

/* ===== Footer ===== */
.footer {
  background: var(--gray-900);
  color: var(--gray-300);
  padding: 40px 20px 20px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 32px;
  max-width: 1400px;
  margin: 0 auto 32px;
}
.footer-brand .logo { color: white; margin-bottom: 10px; display: block; }
.footer-brand p { font-size: 0.85rem; line-height: 1.7; }
.footer h4 { color: white; font-size: 0.9rem; margin-bottom: 14px; }
.footer ul li { margin-bottom: 8px; }
.footer ul a { font-size: 0.85rem; color: var(--gray-400); transition: var(--transition); }
.footer ul a:hover { color: white; }
.footer-bottom {
  border-top: 1px solid var(--gray-700);
  padding-top: 20px;
  text-align: center;
  font-size: 0.8rem;
  color: var(--gray-500);
  max-width: 1400px;
  margin: 0 auto;
}

/* ===== Loading ===== */
.loading { display: flex; justify-content: center; padding: 60px; }
.spinner { width: 40px; height: 40px; border: 3px solid var(--gray-200); border-top-color: var(--primary); border-radius: 50%; animation: spin 0.8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ===== Empty State ===== */
.empty-state { text-align: center; padding: 60px 20px; color: var(--gray-400); }
.empty-state .icon { font-size: 3rem; margin-bottom: 16px; }
.empty-state h3 { color: var(--gray-600); margin-bottom: 8px; }

/* ===== Toast ===== */
.toast-container { position: fixed; top: 20px; right: 20px; z-index: 10000; display: flex; flex-direction: column; gap: 8px; }
.toast {
  background: var(--white);
  border-radius: var(--radius);
  padding: 12px 20px;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  animation: slideIn 0.3s ease;
  border-left: 4px solid var(--success);
}
.toast.error { border-left-color: var(--danger); }
@keyframes slideIn { from { transform: translateX(100%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideUp { from { transform: translateY(20px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }

/* ===== Floating Inquiry Button ===== */
.floating-inquiry-btn {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--primary);
  color: white;
  padding: 14px 20px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 4px 12px rgba(15,118,110,0.4);
  cursor: pointer;
  transition: var(--transition);
  z-index: 500;
}
.floating-inquiry-btn:hover { background: var(--primary-dark); transform: translateY(-2px); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .detail-layout { grid-template-columns: 1fr; gap: 24px; }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .header-inner { flex-wrap: wrap; }
  .search-bar { order: 3; max-width: 100%; flex-basis: 100%; }
  .hero h1 { font-size: 1.5rem; }
  .company-info { flex-direction: column; gap: 8px; font-size: 0.8rem; }
  .products-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .sku-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .form-row { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .products-grid { grid-template-columns: 1fr; }
  .related-grid { grid-template-columns: 1fr; }
}