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

body {
  font-family: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  background: #f5f5f5;
  color: #333;
  line-height: 1.7;
  font-size: 16px;
}

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

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

/* ===== HEADER ===== */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #ffffff;
  padding: 0 3rem;
  height: 72px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  position: sticky;
  top: 0;
  z-index: 100;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1.05rem;
  color: #1a2a4a;
  letter-spacing: -0.01em;
}

.logo img {
  height: 48px;
  width: auto;
}

.logo span {
  line-height: 1.15;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: #1a2a4a;
}

nav {
  display: flex;
  align-items: center;
  gap: 0.15rem;
}

nav a {
  color: #444;
  padding: 0.45rem 0.9rem;
  font-weight: 500;
  font-size: 0.85rem;
  border-radius: 4px;
  transition: all 0.2s ease;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

nav a:hover {
  color: #1a5276;
  background: #eaf2f8;
}

nav a.active {
  color: #1a5276;
  background: #d4e6f1;
  font-weight: 600;
}

/* ===== HERO ===== */
.hero {
  background: linear-gradient(135deg, #0c1a2e 0%, #1a2a4a 40%, #1e3a5f 100%);
  color: white;
  padding: 5rem 2rem 5rem;
  position: relative;
  overflow: hidden;
  min-height: 480px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(ellipse at 20% 50%, rgba(26, 82, 118, 0.4) 0%, transparent 70%),
              radial-gradient(ellipse at 80% 50%, rgba(12, 26, 46, 0.6) 0%, transparent 70%);
}

.hero-text {
  position: relative;
  z-index: 1;
  max-width: 700px;
  text-align: center;
  margin: 0 auto;
}

.hero-text h1 {
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
  line-height: 1.1;
  text-transform: uppercase;
}

.hero-text p {
  font-size: 1.15rem;
  opacity: 0.85;
  max-width: 520px;
  margin: 0 auto;
  line-height: 1.6;
}

.btn {
  display: inline-block;
  margin-top: 2rem;
  padding: 0.9rem 2.4rem;
  background: #2980b9;
  color: #ffffff;
  font-weight: 700;
  font-size: 0.9rem;
  border-radius: 4px;
  text-decoration: none;
  transition: all 0.2s ease;
  border: none;
  cursor: pointer;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.btn:hover {
  background: #2471a3;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(41, 128, 185, 0.4);
}

.btn-outline {
  display: inline-block;
  padding: 0.9rem 2.4rem;
  background: transparent;
  color: #2980b9;
  font-weight: 700;
  font-size: 0.9rem;
  border-radius: 4px;
  text-decoration: none;
  transition: all 0.2s ease;
  border: 2px solid #2980b9;
  cursor: pointer;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.btn-outline:hover {
  background: #2980b9;
  color: #fff;
}

/* ===== FEATURED PRODUCT ===== */
.featured-section {
  max-width: 1200px;
  margin: 3rem auto;
  padding: 0 2rem;
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 2rem;
  align-items: start;
}

.featured-product {
  background: #ffffff;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
}

.featured-product-image {
  background: linear-gradient(135deg, #dce6f0 0%, #c5d5e5 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  min-height: 280px;
  font-size: 5rem;
}

.featured-product-info {
  padding: 2.5rem;
}

.featured-product-info h2 {
  font-size: 1.6rem;
  font-weight: 800;
  color: #1a2a4a;
  margin-bottom: 0.75rem;
  text-transform: uppercase;
}

.featured-product-info .subtitle {
  font-size: 0.85rem;
  font-weight: 600;
  color: #2980b9;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
}

.featured-product-info p {
  font-size: 0.95rem;
  color: #555;
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

.featured-product-info .btn-group {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* ===== PRODUCT CATEGORIES SIDEBAR ===== */
.categories-sidebar {
  background: #ffffff;
  border-radius: 12px;
  padding: 2rem;
  box-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
}

.categories-sidebar h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: #1a2a4a;
  margin-bottom: 1.5rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.category-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.category-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  background: #f8f9fa;
  border-radius: 8px;
  transition: all 0.2s ease;
  text-decoration: none;
  color: inherit;
}

.category-item:hover {
  background: #eaf2f8;
  transform: translateX(4px);
}

.category-icon {
  width: 48px;
  height: 48px;
  border-radius: 8px;
  background: #1a2a4a;
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}

.category-item span {
  font-weight: 600;
  font-size: 0.95rem;
  color: #333;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

/* ===== FEATURES ===== */
.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  max-width: 1200px;
  margin: 3rem auto 4rem;
  padding: 0 2rem;
}

.feature {
  background: #ffffff;
  padding: 2.5rem 2rem;
  border-radius: 12px;
  box-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
  text-align: center;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.feature:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
}

.feature .icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 12px;
  background: #1a2a4a;
  color: white;
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
}

.feature h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: #1a2a4a;
  margin-bottom: 0.75rem;
}

.feature p {
  font-size: 0.95rem;
  color: #666;
  line-height: 1.6;
}

/* ===== PAGE INTRO ===== */
.page-intro {
  text-align: center;
  padding: 5rem 2rem 3rem;
  background: linear-gradient(135deg, #0c1a2e 0%, #1a2a4a 40%, #1e3a5f 100%);
  color: white;
}

.page-intro h1 {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 0.75rem;
  letter-spacing: -0.02em;
  text-transform: uppercase;
}

.page-intro p {
  font-size: 1.1rem;
  opacity: 0.85;
  max-width: 560px;
  margin: 0 auto;
}

/* ===== CONTENT ===== */
.content {
  max-width: 1100px;
  margin: 0 auto;
  padding: 3rem 2rem;
}

.content h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: #1a2a4a;
  margin-bottom: 1rem;
  margin-top: 2.5rem;
}

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

.content p {
  color: #555;
  margin-bottom: 1rem;
  font-size: 1.05rem;
}

/* ===== SERVICES ===== */
.service-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.service {
  background: #ffffff;
  padding: 2rem 2.5rem;
  border-radius: 12px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
  border-left: 4px solid #2980b9;
  transition: transform 0.2s ease;
}

.service:hover {
  transform: translateX(4px);
}

.service h2 {
  font-size: 1.25rem;
  margin-top: 0;
  margin-bottom: 0.5rem;
  color: #1a2a4a;
}

.service p {
  margin-bottom: 0;
  color: #555;
}

/* ===== PRODUCTS GRID ===== */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

.product {
  background: #ffffff;
  padding: 2rem;
  border-radius: 12px;
  text-align: center;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
  font-weight: 600;
  color: #1a2a4a;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  position: relative;
  overflow: hidden;
}

.product::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #1a2a4a, #2980b9);
}

.product:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
}

.product .product-icon {
  font-size: 2.5rem;
  margin-bottom: 0.75rem;
}

.product h3 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.product p {
  font-size: 0.9rem;
  color: #666;
  font-weight: 400;
}

/* ===== CONTACT FORM ===== */
.contact-form {
  max-width: 560px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  background: #ffffff;
  padding: 2.5rem;
  border-radius: 12px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
}

.contact-form label {
  font-weight: 600;
  font-size: 0.9rem;
  color: #444;
  margin-bottom: 0.35rem;
  margin-top: 1rem;
}

.contact-form label:first-child {
  margin-top: 0;
}

.contact-form input,
.contact-form textarea {
  padding: 0.85rem 1rem;
  border-radius: 6px;
  border: 1.5px solid #d5d8dc;
  font-size: 1rem;
  font-family: inherit;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  background: #f8f9fa;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: #2980b9;
  box-shadow: 0 0 0 3px rgba(41, 128, 185, 0.1);
  background: #ffffff;
}

.contact-form .btn {
  margin-top: 1.5rem;
  text-align: center;
}

/* ===== CONTACT INFO ===== */
.contact-info {
  max-width: 560px;
  margin: 2rem auto 0;
  background: #ffffff;
  padding: 2rem 2.5rem;
  border-radius: 12px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
}

.contact-info h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: #1a2a4a;
  margin-bottom: 1rem;
}

.contact-info p {
  color: #555;
  margin-bottom: 0.5rem;
  font-size: 0.95rem;
  line-height: 1.6;
}

.contact-info a {
  color: #2980b9;
  font-weight: 500;
}

.contact-info a:hover {
  text-decoration: underline;
}

/* ===== ABOUT SECTIONS ===== */
.about-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  margin-top: 1rem;
}

.about-card {
  background: #ffffff;
  padding: 2rem;
  border-radius: 12px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
}

.about-card h2 {
  color: #1a2a4a;
  margin-top: 0;
  margin-bottom: 0.75rem;
  font-size: 1.3rem;
}

.about-card p {
  margin-bottom: 0;
}

/* ===== FOOTER ===== */
footer {
  background: #0c1a2e;
  color: rgba(255, 255, 255, 0.8);
  text-align: center;
  padding: 2.5rem 2rem;
  margin-top: 0;
  font-size: 0.9rem;
}

footer .footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 2rem;
  align-items: start;
}

footer .footer-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

footer .footer-brand img {
  height: 50px;
  width: auto;
}

footer .footer-brand-text {
  text-align: left;
}

footer .footer-brand-text h3 {
  font-size: 1rem;
  margin-bottom: 0;
}

footer .footer-brand-text p {
  font-size: 0.8rem;
  opacity: 0.7;
}

footer h3 {
  font-size: 1rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 0.75rem;
}

footer p {
  margin: 0 0 0.25rem;
}

footer a {
  color: #5dade2;
  transition: color 0.2s ease;
}

footer a:hover {
  color: #85c1e9;
  text-decoration: underline;
}

.footer-contact {
  text-align: left;
}

.footer-links {
  text-align: center;
}

.footer-nav {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.footer-nav a {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.footer-copy {
  grid-column: 1 / -1;
  text-align: center;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: 0.5rem;
}

/* ===== MOBILE HAMBURGER ===== */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: #1a2a4a;
  margin: 5px 0;
  border-radius: 2px;
  transition: all 0.3s ease;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  header {
    padding: 0 1.5rem;
    height: 64px;
  }

  .menu-toggle {
    display: block;
  }

  nav {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: #ffffff;
    flex-direction: column;
    padding: 1rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    gap: 0;
  }

  nav.open {
    display: flex;
  }

  nav a {
    padding: 0.75rem 1rem;
    border-radius: 6px;
  }

  .hero {
    padding: 3rem 1.5rem 3.5rem;
    min-height: auto;
  }

  .hero-text h1 {
    font-size: 2rem;
  }

  .featured-section {
    grid-template-columns: 1fr;
    margin: 2rem auto;
  }

  .featured-product {
    grid-template-columns: 1fr;
  }

  .features {
    grid-template-columns: 1fr;
    margin-top: 2rem;
  }

  .page-intro {
    padding: 4rem 1.5rem 2.5rem;
  }

  .page-intro h1 {
    font-size: 2rem;
  }

  .content {
    padding: 2rem 1.5rem;
  }

  .about-grid {
    grid-template-columns: 1fr;
  }

  .product-grid {
    grid-template-columns: 1fr;
  }

  footer .footer-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .footer-contact {
    text-align: center;
  }

  .footer-links {
    text-align: center;
  }
}