/* ===== CSS Variables ===== */
:root {
  --navy: #1a2b4a;
  --navy-light: #2c4270;
  --orange: #f26522;
  --orange-hover: #e05515;
  --blue-accent: #3b82f6;
  --bg: #f5f6f8;
  --white: #ffffff;
  --gray-100: #f0f1f3;
  --gray-200: #e2e5ea;
  --gray-400: #9ca3af;
  --gray-600: #6b7280;
  --gray-800: #374151;
  --shadow: 0 4px 24px rgba(26, 43, 74, 0.08);
  --shadow-sm: 0 2px 12px rgba(26, 43, 74, 0.06);
  --radius: 12px;
  --radius-sm: 8px;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

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

body {
  font-family: var(--font);
  color: var(--gray-800);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 24px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 14px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.2s;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

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

.btn-outline {
  background: transparent;
  color: var(--navy);
  border-color: var(--navy);
}
.btn-outline:hover { background: var(--navy); color: var(--white); }

.btn-sm { padding: 8px 18px; font-size: 12px; }
.btn-lg { padding: 14px 32px; font-size: 15px; }
.btn-block { width: 100%; }

/* ===== Header ===== */
.site-header {
  background: var(--white);
  border-bottom: 1px solid var(--gray-200);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 16px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.logo-icon {
  background: linear-gradient(135deg, var(--navy) 50%, var(--orange) 50%);
  color: var(--white);
  font-weight: 800;
  font-size: 14px;
  width: 36px;
  height: 36px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.logo-text {
  font-weight: 800;
  font-size: 16px;
  color: var(--navy);
  letter-spacing: 0.5px;
}

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

.main-nav a {
  font-size: 14px;
  font-weight: 500;
  color: var(--gray-600);
  transition: color 0.2s;
  white-space: nowrap;
}

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

.dropdown-arrow { font-size: 10px; margin-left: 2px; }

.nav-item { position: relative; }

.dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
  padding: 8px 0;
  min-width: 220px;
  z-index: 50;
}

.nav-item:hover .dropdown-menu { display: block; }

.dropdown-menu a {
  display: block;
  padding: 10px 20px;
  font-size: 13px;
}
.dropdown-menu a:hover { background: var(--gray-100); }

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

.search-form {
  display: flex;
  align-items: center;
  background: var(--gray-100);
  border-radius: 24px;
  padding: 0 4px 0 16px;
  border: 1px solid var(--gray-200);
}

.search-form input {
  border: none;
  background: transparent;
  font-size: 13px;
  width: 160px;
  padding: 8px 0;
  outline: none;
  font-family: var(--font);
}

.search-form button {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--gray-400);
  padding: 6px 10px;
  display: flex;
}

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.mobile-menu-btn span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--navy);
  border-radius: 2px;
}

/* ===== Hero ===== */
.hero {
  text-align: center;
  padding: 60px 0;
}

.hero-home {
  background: linear-gradient(180deg, var(--bg) 0%, var(--white) 100%);
  padding: 80px 0;
}

.hero-contact {
  background: var(--bg);
  padding: 48px 0 40px;
}

.hero-sm {
  background: var(--bg);
  padding: 48px 0;
}

.hero h1 {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  color: var(--navy);
  line-height: 1.25;
  max-width: 800px;
  margin: 0 auto 16px;
}

.hero p {
  font-size: 16px;
  color: var(--gray-600);
  max-width: 680px;
  margin: 0 auto;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-top: 32px;
  flex-wrap: wrap;
}

/* ===== Sections ===== */
.section { padding: 64px 0; }
.section-alt { background: var(--bg); }

.section-header {
  text-align: center;
  margin-bottom: 40px;
}

.section-header h2 {
  font-size: 32px;
  font-weight: 800;
  color: var(--navy);
  margin-bottom: 8px;
}

.section-header p { color: var(--gray-600); }
.section-cta { text-align: center; margin-top: 40px; }

/* ===== Product Grid ===== */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}

.product-card {
  background: var(--white);
  border-radius: var(--radius);
  border: 1px solid var(--gray-200);
  overflow: hidden;
  transition: box-shadow 0.2s, transform 0.2s;
}

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

.product-card-image {
  position: relative;
  display: block;
  aspect-ratio: 1;
  overflow: hidden;
  background: var(--gray-100);
}

.product-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s;
}

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

.product-category {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(26, 43, 74, 0.85);
  color: var(--white);
  font-size: 11px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 20px;
}

.product-card-body { padding: 20px; }

.product-card-body h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 8px;
}

.product-card-body h3 a:hover { color: var(--orange); }

.product-desc {
  font-size: 13px;
  color: var(--gray-600);
  margin-bottom: 12px;
  line-height: 1.5;
}

.product-meta {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--gray-600);
  margin-bottom: 16px;
}

.meta-item.price {
  font-weight: 700;
  color: var(--orange);
}

/* ===== Products Page Layout ===== */
.products-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 40px;
}

.sidebar h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 16px;
}

.category-list li { margin-bottom: 4px; }

.category-list a {
  display: block;
  padding: 8px 12px;
  font-size: 14px;
  color: var(--gray-600);
  border-radius: var(--radius-sm);
  transition: all 0.2s;
}

.category-list a:hover,
.category-list a.active {
  background: var(--navy);
  color: var(--white);
}

.search-results-info {
  margin-bottom: 24px;
  font-size: 14px;
  color: var(--gray-600);
}

/* ===== Product Detail ===== */
.product-detail-section { padding: 32px 0 64px; }

.breadcrumb {
  font-size: 13px;
  color: var(--gray-600);
  margin-bottom: 32px;
}

.breadcrumb a:hover { color: var(--orange); }

.product-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  margin-bottom: 64px;
}

.product-detail-image {
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--gray-100);
  aspect-ratio: 1;
}

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

.product-category-badge {
  display: inline-block;
  background: var(--bg);
  color: var(--navy);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 12px;
}

.product-detail-info h1 {
  font-size: 32px;
  font-weight: 800;
  color: var(--navy);
  margin-bottom: 16px;
}

.product-detail-desc {
  font-size: 16px;
  color: var(--gray-600);
  margin-bottom: 24px;
}

.detail-specs {
  background: var(--bg);
  border-radius: var(--radius-sm);
  padding: 20px;
  margin-bottom: 24px;
}

.detail-row {
  display: flex;
  justify-content: space-between;
  padding: 8px 0;
  font-size: 14px;
}

.detail-row + .detail-row { border-top: 1px solid var(--gray-200); }

.detail-label { color: var(--gray-600); }
.detail-value { font-weight: 600; color: var(--navy); }
.detail-value.price { color: var(--orange); }

.spec-list {
  margin-bottom: 24px;
}

.spec-list li {
  padding: 6px 0 6px 24px;
  font-size: 14px;
  position: relative;
}

.spec-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--orange);
  font-weight: 700;
}

.related-products h2 {
  font-size: 24px;
  font-weight: 800;
  color: var(--navy);
  margin-bottom: 24px;
}

/* ===== Contact Page ===== */
.contact-section {
  background: var(--bg);
  padding: 0 0 64px;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 32px;
  margin-top: -20px;
}

.contact-card {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 36px;
}

.card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.card-icon {
  color: var(--blue-accent);
  flex-shrink: 0;
}

.card-header h2 {
  font-size: 22px;
  font-weight: 800;
  color: var(--navy);
}

.card-desc {
  font-size: 14px;
  color: var(--gray-600);
  margin-bottom: 24px;
  line-height: 1.6;
}

.contact-list li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--gray-100);
}

.contact-list li:last-child { border-bottom: none; }

.contact-list-icon {
  color: var(--blue-accent);
  flex-shrink: 0;
  margin-top: 2px;
}

.contact-list li div {
  display: flex;
  flex-direction: column;
}

.contact-list strong {
  font-size: 13px;
  color: var(--navy);
  font-weight: 600;
}

.contact-list span {
  font-size: 14px;
  color: var(--gray-600);
}

/* ===== Form ===== */
.inquiry-form { margin-top: 8px; }

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

.form-group { margin-bottom: 16px; }

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 6px;
}

.required { color: #ef4444; }

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 11px 14px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-family: var(--font);
  color: var(--gray-800);
  background: var(--white);
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--blue-accent);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-group textarea { resize: vertical; min-height: 120px; }

.alert {
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  margin-bottom: 20px;
}

.alert-success {
  background: #ecfdf5;
  color: #065f46;
  border: 1px solid #a7f3d0;
}

.alert-error {
  background: #fef2f2;
  color: #991b1b;
  border: 1px solid #fecaca;
}

/* ===== Trust Bar ===== */
.trust-bar {
  background: var(--white);
  border-top: 1px solid var(--gray-200);
  padding: 32px 0;
}

.trust-bar-inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.trust-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.trust-icon {
  color: var(--blue-accent);
  flex-shrink: 0;
}

.trust-item strong {
  display: block;
  font-size: 14px;
  color: var(--navy);
  margin-bottom: 2px;
}

.trust-item span {
  font-size: 12px;
  color: var(--gray-600);
  line-height: 1.4;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--navy);
  color: rgba(255, 255, 255, 0.8);
  padding-top: 48px;
}

.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
}

.footer-brand .logo-text { color: var(--white); }
.footer-brand p {
  margin-top: 16px;
  font-size: 14px;
  line-height: 1.6;
}

.footer-links h4,
.footer-contact h4 {
  color: var(--white);
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 16px;
}

.footer-links a {
  display: block;
  font-size: 14px;
  padding: 4px 0;
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--orange); }

.footer-contact p {
  font-size: 14px;
  padding: 4px 0;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
}

/* ===== Features / Branding / Blog / About ===== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 28px;
  text-align: center;
  border: 1px solid var(--gray-200);
}

.feature-icon { font-size: 36px; margin-bottom: 16px; }

.feature-card h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 8px;
}

.feature-card p { font-size: 13px; color: var(--gray-600); }

.branding-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.branding-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 28px;
}

.branding-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 10px;
}

.branding-card p { font-size: 14px; color: var(--gray-600); }

.content-page { max-width: 900px; margin: 0 auto; }

.about-content h2 {
  font-size: 24px;
  font-weight: 800;
  color: var(--navy);
  margin: 32px 0 12px;
}

.about-content h2:first-child { margin-top: 0; }

.about-content p { font-size: 15px; color: var(--gray-600); margin-bottom: 16px; }

.about-list li {
  padding: 8px 0;
  font-size: 15px;
  color: var(--gray-600);
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 16px;
}

.process-step {
  text-align: center;
  padding: 20px;
  background: var(--bg);
  border-radius: var(--radius);
}

.step-num {
  display: inline-flex;
  width: 36px;
  height: 36px;
  background: var(--orange);
  color: var(--white);
  border-radius: 50%;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  margin-bottom: 12px;
}

.process-step p { font-size: 13px; color: var(--gray-600); }

.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.blog-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 28px;
}

.blog-date {
  font-size: 12px;
  color: var(--orange);
  font-weight: 600;
  margin-bottom: 10px;
}

.blog-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 10px;
  line-height: 1.4;
}

.blog-card p { font-size: 14px; color: var(--gray-600); margin-bottom: 16px; }

.read-more {
  font-size: 14px;
  font-weight: 600;
  color: var(--blue-accent);
}
.read-more:hover { color: var(--orange); }

.empty-state {
  text-align: center;
  padding: 64px 0;
}

.empty-state h3 {
  font-size: 24px;
  color: var(--navy);
  margin-bottom: 8px;
}

.empty-state p { color: var(--gray-600); margin-bottom: 24px; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .trust-bar-inner { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .product-detail { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: repeat(2, 1fr); }
  .branding-grid { grid-template-columns: repeat(2, 1fr); }
  .blog-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .main-nav {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 16px 24px;
    border-bottom: 1px solid var(--gray-200);
    box-shadow: var(--shadow);
    gap: 0;
  }

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

  .main-nav a {
    padding: 12px 0;
    border-bottom: 1px solid var(--gray-100);
    width: 100%;
  }

  .nav-item .dropdown-menu {
    position: static;
    box-shadow: none;
    border: none;
    padding-left: 16px;
  }

  .nav-item:hover .dropdown-menu,
  .nav-item.open .dropdown-menu { display: block; }

  .header-actions .btn-sm { display: none; }
  .search-form { display: none; }
  .mobile-menu-btn { display: flex; }

  .header-inner { position: relative; }

  .products-layout { grid-template-columns: 1fr; }
  .sidebar { display: none; }
  .form-row { grid-template-columns: 1fr; }
  .trust-bar-inner { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .branding-grid { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
  .contact-card { padding: 24px; }
}