/* LAIKEN LIGHTING - B2B Lighting Factory Website */
:root {
  --primary: #1a56db;
  --primary-dark: #1e429f;
  --accent: #f59e0b;
  --dark: #0f172a;
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-600: #475569;
  --gray-700: #334155;
  --white: #ffffff;
  --shadow: 0 4px 6px -1px rgba(0,0,0,.1), 0 2px 4px -2px rgba(0,0,0,.1);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,.1), 0 4px 6px -4px rgba(0,0,0,.1);
  --radius: 12px;
  --max-width: 1200px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  color: var(--dark);
  line-height: 1.6;
  background: var(--white);
}

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

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

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

/* Header */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--white);
  box-shadow: 0 1px 3px rgba(0,0,0,.1);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.5px;
}

.logo span { color: var(--dark); }

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

.nav-links a {
  font-weight: 500;
  color: var(--gray-700);
  transition: color .2s;
  font-size: .95rem;
}

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

.nav-cta {
  background: var(--primary);
  color: var(--white) !important;
  padding: 10px 24px;
  border-radius: 8px;
  font-weight: 600;
  transition: background .2s;
}

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

.mobile-toggle { display: none; font-size: 1.5rem; cursor: pointer; }

/* Hero */
.hero {
  background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 50%, #1a56db 100%);
  color: var(--white);
  padding: 80px 0;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(245,158,11,.15) 0%, transparent 70%);
  border-radius: 50%;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero h1 {
  font-size: 2.8rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
}

.hero h1 span { color: var(--accent); }

.hero p {
  font-size: 1.15rem;
  color: rgba(255,255,255,.85);
  margin-bottom: 32px;
  line-height: 1.7;
}

.hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; }

.btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  transition: all .2s;
  cursor: pointer;
  border: none;
}

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

.btn-primary:hover { background: #d97706; transform: translateY(-2px); }

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255,255,255,.4);
}

.btn-outline:hover { border-color: var(--white); background: rgba(255,255,255,.1); }

.hero-image {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

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

/* Stats */
.stats {
  background: var(--white);
  padding: 50px 0;
  border-bottom: 1px solid var(--gray-200);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  text-align: center;
}

.stat-item h3 {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 4px;
}

.stat-item p { color: var(--gray-600); font-size: .95rem; }

/* Section */
.section { padding: 80px 0; }

.section-header { text-align: center; margin-bottom: 50px; }

.section-tag {
  display: inline-block;
  background: rgba(26,86,219,.1);
  color: var(--primary);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: .85rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.section-header h2 {
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 12px;
}

.section-header p {
  color: var(--gray-600);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
}

/* Products */
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.product-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all .3s;
}

.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary);
}

.product-image {
  height: 240px;
  background: var(--gray-100);
  overflow: hidden;
}

.product-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s;
}

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

.product-info { padding: 24px; }

.product-info h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.product-info p {
  color: var(--gray-600);
  font-size: .92rem;
  margin-bottom: 16px;
  line-height: 1.5;
}

.product-tags { display: flex; gap: 8px; flex-wrap: wrap; }

.product-tag {
  background: var(--gray-100);
  color: var(--gray-700);
  padding: 4px 10px;
  border-radius: 4px;
  font-size: .78rem;
  font-weight: 500;
}

/* Features */
.features { background: var(--gray-50); }

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.feature-card {
  background: var(--white);
  padding: 36px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: transform .3s;
}

.feature-card:hover { transform: translateY(-4px); }

.feature-icon {
  width: 56px;
  height: 56px;
  background: rgba(26,86,219,.1);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 20px;
}

.feature-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.feature-card p {
  color: var(--gray-600);
  font-size: .95rem;
  line-height: 1.6;
}

/* Factory */
.factory-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
}

.factory-image {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

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

.factory-content h2 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 20px;
}

.factory-content p {
  color: var(--gray-600);
  margin-bottom: 24px;
  line-height: 1.7;
}

.factory-list { list-style: none; }

.factory-list li {
  padding: 10px 0;
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--gray-700);
}

.factory-list li::before {
  content: '✓';
  color: var(--primary);
  font-weight: 700;
  background: rgba(26,86,219,.1);
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .8rem;
  flex-shrink: 0;
}

/* CTA */
.cta {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: var(--white);
  padding: 70px 0;
  text-align: center;
}

.cta h2 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 16px;
}

.cta p {
  font-size: 1.1rem;
  color: rgba(255,255,255,.85);
  margin-bottom: 32px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* Footer */
footer {
  background: var(--dark);
  color: rgba(255,255,255,.7);
  padding: 60px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand h3 {
  color: var(--white);
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: .92rem;
  line-height: 1.7;
  margin-bottom: 16px;
}

.footer-col h4 {
  color: var(--white);
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.footer-col ul { list-style: none; }

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

.footer-col a {
  color: rgba(255,255,255,.7);
  font-size: .92rem;
  transition: color .2s;
}

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

.footer-contact li {
  display: flex;
  gap: 10px;
  margin-bottom: 14px;
  font-size: .92rem;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding-top: 24px;
  text-align: center;
  font-size: .85rem;
}

/* WhatsApp Float */
.whatsapp-float {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 60px;
  height: 60px;
  background: #25D366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  box-shadow: var(--shadow-lg);
  z-index: 999;
  transition: transform .2s;
  animation: pulse 2s infinite;
}

.whatsapp-float:hover { transform: scale(1.1); }

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(37,211,102,.4); }
  70% { box-shadow: 0 0 0 15px rgba(37,211,102,0); }
  100% { box-shadow: 0 0 0 0 rgba(37,211,102,0); }
}

/* Page Header */
.page-header {
  background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 100%);
  color: var(--white);
  padding: 60px 0;
  text-align: center;
}

.page-header h1 { font-size: 2.4rem; font-weight: 800; margin-bottom: 10px; }
.page-header p { color: rgba(255,255,255,.8); font-size: 1.1rem; }

/* Contact Form */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 50px;
}

.contact-info h3 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.contact-item {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
  align-items: flex-start;
}

.contact-icon {
  width: 48px;
  height: 48px;
  background: rgba(26,86,219,.1);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}

.contact-item h4 { font-size: 1rem; font-weight: 600; margin-bottom: 4px; }
.contact-item p { color: var(--gray-600); font-size: .95rem; }

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

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

.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 8px;
  font-size: .92rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--gray-200);
  border-radius: 8px;
  font-size: .95rem;
  font-family: inherit;
  transition: border-color .2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(26,86,219,.1);
}

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

/* Product Detail */
.product-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  margin-bottom: 60px;
}

.product-gallery {
  background: var(--gray-100);
  border-radius: var(--radius);
  overflow: hidden;
}

.product-gallery img { width: 100%; height: 450px; object-fit: cover; }

.product-detail h1 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 16px;
}

.product-detail .price {
  font-size: 1.5rem;
  color: var(--primary);
  font-weight: 700;
  margin-bottom: 20px;
}

.product-specs {
  background: var(--gray-50);
  padding: 24px;
  border-radius: var(--radius);
  margin-bottom: 24px;
}

.product-specs h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.spec-row {
  display: flex;
  justify-content: space-between;
  padding: 8px 0;
  border-bottom: 1px solid var(--gray-200);
  font-size: .92rem;
}

.spec-row:last-child { border-bottom: none; }
.spec-row .label { color: var(--gray-600); }
.spec-row .value { font-weight: 600; }

/* Responsive */
@media (max-width: 900px) {
  .nav-links { display: none; }
  .mobile-toggle { display: block; }
  .hero-content { grid-template-columns: 1fr; gap: 40px; }
  .hero h1 { font-size: 2rem; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: 1fr; }
  .factory-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .product-detail-grid { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  .products-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .hero h1 { font-size: 1.6rem; }
  .section-header h2 { font-size: 1.6rem; }
}