:root {
  --blue: #008ad1;
  --blue-light: #288bd0;
  --blue-hover: #2396e6;
  --red: #920b00;
  --dark: #2c3e50;
  --text: #a1b1bc;
  --border: #ecf0f1;
  --footer-bg: #232323;
  --footer-text: #dddddd;
  --white: #ffffff;
  --max-width: 1200px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Open Sans', sans-serif;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text);
  background: var(--white);
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--blue-light); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--blue-hover); }

h1, h2, h3, h4 { color: var(--dark); font-family: 'Lato', sans-serif; font-weight: 300; }
h2 { font-size: 36px; }
h3 { font-size: 18px; font-weight: 600; }

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

/* Header */
.site-header {
  background: var(--white);
  border-top: 1px solid #ecedee;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.logo img { max-width: 220px; height: auto; }

.main-nav ul {
  display: flex;
  list-style: none;
  gap: 4px;
}

.main-nav a {
  display: block;
  padding: 14px 16px;
  color: var(--blue);
  font-family: 'Lato', sans-serif;
  font-size: 15px;
  border-top: 3px solid transparent;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--red);
  border-top-color: var(--red);
}

.main-nav .has-sub { position: relative; }
.main-nav .sub-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--white);
  min-width: 200px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  border-top: 3px solid var(--blue-light);
  flex-direction: column;
  z-index: 100;
}

.main-nav .has-sub:hover .sub-menu { display: flex; }
.main-nav .sub-menu a { border-top: none; padding: 12px 20px; }
.main-nav .sub-menu a:hover { background: var(--border); }

.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 28px;
  color: var(--blue);
  cursor: pointer;
  padding: 8px;
}

/* Hero Slider */
.hero-slider {
  position: relative;
  height: 500px;
  overflow: hidden;
}

.hero-slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transition: opacity 0.8s ease;
}

.hero-slide.active { opacity: 1; }

.hero-slider .slider-nav {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  z-index: 2;
}

.slider-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255,255,255,0.5);
  border: none;
  cursor: pointer;
}

.slider-dot.active { background: var(--white); }

.slider-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(0,0,0,0.5);
  color: var(--white);
  border: none;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  font-size: 20px;
  cursor: pointer;
  z-index: 2;
}

.slider-arrow:hover { background: #000; }
.slider-arrow.prev { left: 16px; }
.slider-arrow.next { right: 16px; }

/* Page header */
.page-header {
  background: var(--border);
  padding: 40px 0;
  border-bottom: 1px solid var(--border);
  text-align: center;
}

.page-header h1 { font-size: 42px; }

.breadcrumb {
  margin-top: 8px;
  font-size: 13px;
  color: var(--text);
}

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

/* Sections */
.section { padding: 50px 0; }
.section-gray { background: #f9fafb; }

/* Feature boxes (top icons) */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding: 30px 0 10px;
}

.feature-box {
  text-align: center;
  padding: 20px 10px;
}

.feature-icon {
  width: 70px;
  height: 70px;
  border-radius: 50%;
  border: 2px solid var(--red);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 28px;
  color: var(--red);
  transition: all 0.3s;
}

.feature-box:hover .feature-icon {
  background: var(--red);
  color: var(--white);
}

.feature-box h3 { margin-bottom: 8px; font-size: 16px; font-weight: 600; }
.feature-box p { font-size: 13px; }

/* About row */
.about-row {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 40px;
  align-items: center;
}

.about-row h2 { margin-bottom: 20px; }
.about-row p { margin-bottom: 24px; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  border: 1px solid var(--text);
  border-radius: 4px;
  color: var(--text);
  background: var(--white);
  font-weight: 500;
  transition: all 0.3s;
  cursor: pointer;
  font-size: 14px;
}

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

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

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

/* Mini slider */
.mini-slider {
  position: relative;
  border-radius: 4px;
  overflow: hidden;
  aspect-ratio: 3/2;
}

.mini-slider img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.6s;
}

.mini-slider img.active { opacity: 1; }

/* Service boxes */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  margin-top: 32px;
}

.service-box {
  padding: 0 10px 30px;
}

.service-box .service-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--blue);
  color: var(--white);
  border-radius: 4px;
  margin-bottom: 12px;
  font-size: 14px;
}

.service-box h3 { margin-bottom: 10px; font-size: 16px; font-weight: 600; }
.service-box p { font-size: 13px; line-height: 1.6; }

/* Counters */
.counters-section {
  background: url('../images/slider/slider-1.jpg') center/cover no-repeat;
  position: relative;
  padding: 60px 0;
}

.counters-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(44, 62, 80, 0.85);
}

.counters-section .container { position: relative; z-index: 1; }

.counters-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.counter-item .counter-icon {
  width: 80px;
  height: 80px;
  border: 2px solid var(--red);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 28px;
  color: var(--white);
  background: var(--red);
}

.counter-number {
  font-size: 42px;
  font-weight: 700;
  color: var(--red);
  font-family: 'Lato', sans-serif;
}

.counter-label {
  display: block;
  margin-top: 4px;
  color: var(--blue-light);
  font-size: 14px;
}

/* CTA box */
.cta-box {
  margin-top: 60px;
  border: 1px solid #eaebec;
  display: flex;
  align-items: stretch;
  background: var(--white);
}

.cta-text {
  flex: 1;
  padding: 30px 30px 30px 40px;
  border-left: 10px solid var(--red);
}

.cta-text h2 { font-size: 24px; margin-bottom: 12px; }
.cta-text p { font-size: 14px; }

.cta-btn-wrap {
  display: flex;
  align-items: center;
  padding: 20px 30px;
}

.cta-btn {
  background: var(--blue);
  color: var(--white);
  padding: 14px 28px;
  white-space: nowrap;
  font-weight: 500;
}

.cta-btn:hover { background: var(--red); color: var(--white); }

/* Portfolio / references */
.section-title { text-align: center; margin-bottom: 40px; }

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

.portfolio-item {
  border: 1px solid var(--border);
  overflow: hidden;
  transition: border-color 0.3s;
}

.portfolio-item:hover { border-color: var(--dark); }

.portfolio-item .img-wrap {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/10;
}

.portfolio-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s;
}

.portfolio-item:hover img { transform: scale(1.05); }

.portfolio-item .overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 138, 209, 0.85);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s;
  color: var(--white);
  text-align: center;
  padding: 20px;
}

.portfolio-item:hover .overlay { opacity: 1; }

.portfolio-item .overlay h3 { color: var(--white); margin-bottom: 4px; }
.portfolio-item .overlay p { color: rgba(255,255,255,0.8); font-size: 13px; }

.portfolio-desc {
  padding: 16px;
  background: var(--white);
}

.portfolio-desc h3 {
  font-size: 15px;
  margin-bottom: 4px;
}

.portfolio-desc h3 a { color: var(--dark); }
.portfolio-desc span { font-size: 12px; color: var(--text); }

/* Products grid */
.products-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.product-card {
  border: 1px solid var(--border);
  overflow: hidden;
  text-align: center;
  transition: border-color 0.3s;
}

.product-card:hover { border-color: var(--dark); }

.product-card .img-wrap {
  aspect-ratio: 4/3;
  overflow: hidden;
}

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

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

.product-card h3 {
  padding: 14px;
  font-size: 15px;
}

/* Gallery */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.gallery-item {
  overflow: hidden;
  border-radius: 4px;
  cursor: pointer;
  aspect-ratio: 3/2;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s;
}

.gallery-item:hover img { transform: scale(1.08); }

/* Lightbox */
.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.9);
  z-index: 9999;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.lightbox.open { display: flex; }

.lightbox img {
  max-width: 90vw;
  max-height: 90vh;
  object-fit: contain;
}

.lightbox-close {
  position: absolute;
  top: 20px;
  right: 30px;
  color: var(--white);
  font-size: 36px;
  background: none;
  border: none;
  cursor: pointer;
}

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

.contact-info h2 {
  font-size: 24px;
  margin-bottom: 24px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.info-block { margin-bottom: 28px; }

.info-block h3 {
  font-size: 16px;
  margin-bottom: 10px;
  color: var(--blue);
}

.info-block p { line-height: 1.8; }

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

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

.form-group label .req { color: var(--red); }

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid #eceef0;
  font-family: inherit;
  font-size: 14px;
  color: var(--text);
  background: var(--white);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--blue);
}

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

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

.form-success {
  display: none;
  padding: 16px;
  background: #d4edda;
  color: #155724;
  border-radius: 4px;
  margin-bottom: 16px;
}

.form-success.show { display: block; }

/* About page content */
.content-block { margin-bottom: 40px; }
.content-block h2 { margin-bottom: 20px; }
.content-block p { margin-bottom: 16px; }
.content-block ul { margin: 16px 0 16px 24px; }
.content-block li { margin-bottom: 8px; }

.mission-vision {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  margin-top: 40px;
}

.mission-vision h2 { font-size: 28px; margin-bottom: 16px; }

.bottom-cta {
  margin-top: 50px;
  padding: 40px;
  background: var(--border);
  text-align: center;
}

.bottom-cta h2 { margin-bottom: 20px; }
.bottom-cta .btn-group { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* Quote form section */
.quote-section {
  margin-top: 60px;
  padding: 50px 0;
  background: #f9fafb;
  border-top: 1px solid var(--border);
}

.quote-section h2 { text-align: center; margin-bottom: 30px; }

.quote-form { max-width: 700px; margin: 0 auto; }

/* Footer */
.site-footer {
  background: var(--footer-bg);
  color: var(--footer-text);
}

.footer-bar {
  background: #f2f2f2;
  padding: 20px 0;
  color: var(--dark);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.social-links {
  display: flex;
  gap: 12px;
}

.social-links a {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--dark);
  font-size: 18px;
}

.social-links a:hover { color: var(--red); }

.back-to-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 44px;
  height: 44px;
  background: var(--red);
  color: var(--white);
  border: none;
  border-radius: 4px;
  font-size: 20px;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s;
  z-index: 999;
}

.back-to-top.visible { opacity: 1; visibility: visible; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* Responsive */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .counters-grid { grid-template-columns: repeat(2, 1fr); }
  .products-grid { grid-template-columns: repeat(3, 1fr); }
  .gallery-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
  .menu-toggle { display: block; }

  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #222533;
  }

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

  .main-nav ul { flex-direction: column; }

  .main-nav a {
    color: var(--white);
    border-top: none;
    border-left: 2px solid transparent;
    padding: 14px 20px;
  }

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

  .main-nav .sub-menu {
    position: static;
    box-shadow: none;
    background: #2e3244;
    border-top: none;
  }

  .main-nav .has-sub:hover .sub-menu,
  .main-nav .has-sub.open .sub-menu { display: flex; }

  .hero-slider { height: 300px; }
  .about-row { grid-template-columns: 1fr; }
  .services-grid { grid-template-columns: 1fr; }
  .portfolio-grid { grid-template-columns: 1fr; }
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .mission-vision { grid-template-columns: 1fr; }
  .cta-box { flex-direction: column; }
  .form-row { grid-template-columns: 1fr; }
  h2 { font-size: 28px; }
}

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