:root {
  --primary: #0f52ba;
  --primary-dark: #0a3a85;
  --primary-light: #eff6ff;
  --accent: #f59e0b;
  --accent-hover: #d97706;
  --bg-body: #f8fafc;
  --bg-surface: #ffffff;
  --bg-dark: #0f172a;
  --text-main: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --border-color: #e2e8f0;
  --success: #10b981;
  --whatsapp: #25D366;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 10px 25px -5px rgba(15, 23, 42, 0.08), 0 4px 10px -3px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 20px 40px -10px rgba(15, 23, 42, 0.14);
  --transition: 0.22s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  color: var(--text-main);
  background-color: var(--bg-body);
  line-height: 1.6;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

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

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

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Top Utility Bar */
.topbar {
  background: var(--bg-dark);
  color: #cbd5e1;
  font-size: 0.82rem;
  padding: 8px 0;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.topbar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.topbar-left, .topbar-right {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

.topbar-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #cbd5e1;
  transition: color var(--transition);
}

.topbar-item:hover {
  color: #ffffff;
}

.lang-select {
  background: rgba(255,255,255,0.1);
  color: #ffffff;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 6px;
  padding: 2px 8px;
  font-size: 0.8rem;
  cursor: pointer;
}

.lang-select option {
  color: #0f172a;
  background: #ffffff;
}

/* Sticky Main Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  gap: 20px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: -0.02em;
  color: var(--text-main);
}

.logo-mark {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #ffffff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 1.15rem;
  box-shadow: 0 4px 12px rgba(15, 82, 186, 0.25);
}

.brand-text-wrap {
  display: flex;
  flex-direction: column;
}

.brand-sub {
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.02em;
  margin-top: -2px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-link {
  font-weight: 600;
  font-size: 0.94rem;
  color: var(--text-secondary);
  transition: color var(--transition);
  position: relative;
}

.nav-link:hover {
  color: var(--primary);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.92rem;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(15, 82, 186, 0.2);
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
}

.btn-accent {
  background: var(--accent);
  color: #0f172a;
}

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

.btn-outline {
  background: #ffffff;
  border-color: var(--border-color);
  color: var(--text-main);
}

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-light);
}

.btn-whatsapp {
  background: var(--whatsapp);
  color: #ffffff;
}

.btn-whatsapp:hover {
  filter: brightness(0.93);
  transform: translateY(-1px);
}

.badge-count {
  background: var(--accent);
  color: #0f172a;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 999px;
}

/* Hero Banner */
.hero-section {
  position: relative;
  background: linear-gradient(135deg, #0b132b 0%, #1c2541 100%);
  color: #ffffff;
  padding: 72px 0 84px;
  overflow: hidden;
}

.hero-bg-overlay {
  position: absolute;
  inset: 0;
  opacity: 0.18;
  background-size: cover;
  background-position: center;
  pointer-events: none;
}

.hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 600;
  color: #fde68a;
  margin-bottom: 20px;
}

.hero-title {
  font-size: clamp(2rem, 3.6vw, 3.1rem);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.02em;
  margin-bottom: 18px;
}

.hero-subtitle {
  font-size: 1.08rem;
  color: #cbd5e1;
  margin-bottom: 30px;
  max-width: 620px;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 40px;
}

.hero-cta-group .btn {
  padding: 13px 26px;
  font-size: 0.98rem;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  padding-top: 28px;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
}

.stat-item {
  display: flex;
  flex-direction: column;
}

.stat-value {
  font-size: 1.65rem;
  font-weight: 800;
  color: #ffffff;
}

.stat-label {
  font-size: 0.8rem;
  color: #94a3b8;
}

.hero-visual-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.18);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  background: #1e293b;
}

.hero-visual-card img {
  width: 100%;
  height: 400px;
  object-fit: cover;
}

.hero-trust-strip {
  background: rgba(15, 23, 42, 0.88);
  backdrop-filter: blur(8px);
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.82rem;
  color: #e2e8f0;
}

/* Section Headers */
.section {
  padding: 72px 0;
}

.section-alt {
  background: #ffffff;
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 44px;
}

.section-eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--primary);
  background: var(--primary-light);
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 10px;
}

.section-title {
  font-size: clamp(1.65rem, 2.5vw, 2.25rem);
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.section-desc {
  color: var(--text-secondary);
  font-size: 1rem;
}

/* Catalog Toolbar (Categories + Search + Sort) */
.catalog-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 32px;
  background: #ffffff;
  padding: 16px 20px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}

.category-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.cat-pill {
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 0.88rem;
  font-weight: 600;
  background: var(--bg-body);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  cursor: pointer;
  transition: all var(--transition);
}

.cat-pill:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.cat-pill.active {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
}

.catalog-search-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1;
  max-width: 360px;
  min-width: 240px;
}

.search-input {
  width: 100%;
  padding: 9px 14px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  outline: none;
  transition: border-color var(--transition);
}

.search-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(15, 82, 186, 0.12);
}

/* Product Grid */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 26px;
}

.product-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: #cbd5e1;
}

.product-thumb-wrap {
  position: relative;
  height: 240px;
  background: #f1f5f9;
  overflow: hidden;
  cursor: pointer;
}

.product-thumb-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.product-card:hover .product-thumb-wrap img {
  transform: scale(1.04);
}

.product-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background: var(--primary);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 6px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.18);
}

.product-sku-tag {
  position: absolute;
  bottom: 10px;
  right: 10px;
  background: rgba(15, 23, 42, 0.75);
  color: #f8fafc;
  font-size: 0.72rem;
  padding: 3px 8px;
  border-radius: 4px;
  backdrop-filter: blur(4px);
}

.product-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.product-cat {
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--primary);
  margin-bottom: 6px;
}

.product-title {
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
  line-height: 1.38;
  cursor: pointer;
}

.product-title:hover {
  color: var(--primary);
}

.product-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.product-meta-box {
  background: var(--bg-body);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  margin-top: auto;
  margin-bottom: 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.84rem;
  border: 1px solid var(--border-color);
}

.price-text {
  font-weight: 800;
  color: var(--primary);
  font-size: 0.95rem;
}

.moq-text {
  color: var(--text-muted);
  font-weight: 600;
}

.product-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.product-actions .btn {
  padding: 9px 12px;
  font-size: 0.86rem;
}

/* Advantages Grid */
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.adv-card {
  background: var(--bg-body);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  transition: transform var(--transition), box-shadow var(--transition);
}

.adv-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.adv-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.2rem;
  margin-bottom: 16px;
}

.adv-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.adv-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* About Factory Section */
.about-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 48px;
  align-items: center;
}

.about-img-box {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
}

.about-img-box img {
  width: 100%;
  height: 380px;
  object-fit: cover;
}

.cert-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.cert-tag {
  background: #ffffff;
  border: 1px solid var(--border-color);
  padding: 6px 14px;
  border-radius: 6px;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-secondary);
}

/* FAQ Accordion */
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 18px 22px;
}

.faq-item summary {
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-answer {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 0.94rem;
}

/* Direct Contact & RFQ Section */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 40px;
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-md);
}

.contact-info-card {
  background: linear-gradient(135deg, #0f172a, #1e293b);
  color: #ffffff;
  border-radius: var(--radius-md);
  padding: 32px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin: 28px 0;
}

.contact-row {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.contact-label {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #94a3b8;
}

.contact-val {
  font-size: 1rem;
  font-weight: 600;
  color: #f8fafc;
}

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

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 16px;
}

.form-group.full {
  grid-column: 1 / -1;
}

.form-label {
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--text-main);
}

.form-control {
  padding: 11px 14px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 0.94rem;
  outline: none;
  transition: border-color var(--transition);
}

.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(15, 82, 186, 0.12);
}

/* Native HTML5 <dialog> Modals (Compliant with Modern Web Guidance) */
dialog.site-dialog {
  margin: auto;
  border: none;
  border-radius: var(--radius-lg);
  padding: 0;
  max-width: 920px;
  width: calc(100% - 32px);
  max-height: 90vh;
  background: #ffffff;
  color: var(--text-main);
  box-shadow: var(--shadow-lg);
  overflow-y: auto;
}

dialog.site-dialog::backdrop {
  background-color: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(4px);
}

.dialog-inner {
  padding: 28px 32px;
}

.dialog-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 24px;
}

.dialog-close-btn {
  background: var(--bg-body);
  border: 1px solid var(--border-color);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.1rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.dialog-close-btn:hover {
  background: #e2e8f0;
}

.detail-modal-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 28px;
}

.detail-main-img {
  width: 100%;
  height: 320px;
  object-fit: cover;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  margin-bottom: 12px;
}

.detail-thumbs {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.detail-thumb {
  width: 64px;
  height: 64px;
  object-fit: cover;
  border-radius: 6px;
  border: 2px solid transparent;
  cursor: pointer;
}

.detail-thumb.active {
  border-color: var(--primary);
}

.specs-table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  font-size: 0.88rem;
}

.specs-table th, .specs-table td {
  padding: 8px 12px;
  border: 1px solid var(--border-color);
  text-align: left;
}

.specs-table th {
  background: var(--bg-body);
  width: 38%;
  color: var(--text-secondary);
}

/* Floating Quick Contact Dock */
.floating-dock {
  position: fixed;
  right: 22px;
  bottom: 24px;
  z-index: 35;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.dock-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 18px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.88rem;
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.22);
  cursor: pointer;
  border: none;
  transition: transform var(--transition);
}

.dock-btn:hover {
  transform: translateY(-2px) scale(1.02);
}

/* Footer */
.site-footer {
  background: var(--bg-dark);
  color: #94a3b8;
  padding: 56px 0 28px;
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 36px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-title {
  color: #ffffff;
  font-size: 0.96rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 0.88rem;
}

.footer-links a:hover {
  color: #ffffff;
}

.footer-bottom {
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.82rem;
}

@media (max-width: 960px) {
  .hero-grid, .about-grid, .contact-grid, .detail-modal-grid, .footer-grid {
    grid-template-columns: 1fr;
  }
  .main-nav {
    display: none;
  }
  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
  }
}

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