@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@400;500;700&display=swap');

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

body {
  font-family: 'Roboto', sans-serif;
  line-height: 1.6;
  color: #333;
  background: #fff;
}

/* ===== Container ===== */
.container {
  width: 90%;
  max-width: 1200px;
  margin: auto;
  padding: 2rem 0;
}

/* ===== Hero Section ===== */
.hero {
  background: linear-gradient(135deg, #0066cc, #004d99);
  color: #fff;
  height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('https://via.placeholder.com/1920x1080') no-repeat center center/cover;
  opacity: 0.3;
  z-index: -2;
}

.hero::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: -1;
}

.hero-content h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.hero-content p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
}

.btn-preview {
  padding: 0.8rem 2rem;
  background: #ff6b35;
  color: #fff;
  text-decoration: none;
  border-radius: 50px;
  transition: background 0.3s ease;
}

.btn-preview:hover {
  background: #e65b2d;
}

/* ===== Navigation ===== */
nav {
  background: #fff;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
}

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

.nav-links li {
  margin-left: 2rem;
}

.nav-links a {
  text-decoration: none;
  color: #333;
  font-weight: 500;
  transition: color 0.3s ease;
}

.nav-links a:hover {
  color: #0066cc;
}

/* ===== Services Section ===== */
#services {
  background: #f8f9fa;
  padding: 4rem 0;
}

#services h2 {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 2rem;
  position: relative;
}

#services h2::after {
  content: "";
  width: 50px;
  height: 4px;
  background: #ff6b35;
  display: block;
  margin: 0.5rem auto;
  border-radius: 2px;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.service-card {
  background: #fff;
  padding: 2rem;
  border-radius: 10px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s, box-shadow 0.3s;
  text-align: center;
}

.service-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.service-icon {
  font-size: 2.5rem;
  color: #0066cc;
  margin-bottom: 1rem;
}

/* ===== Partners Section ===== */
#partners {
  padding: 4rem 0;
}

#partners h2 {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 2rem;
}

.partners-grid {
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.partner img {
  width: 150px;
  height: auto;
  object-fit: contain;
  filter: grayscale(100%);
  transition: filter 0.3s ease;
}

.partner img:hover {
  filter: grayscale(0%);
}

/* ===== About Section ===== */
#about {
  padding: 4rem 0;
  background: #fff;
}

#about h2 {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 2rem;
}

/* ===== Contact Section ===== */
#contact {
  background: #f8f9fa;
  padding: 4rem 0;
}

#contact h2 {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 2rem;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.contact-item {
  display: flex;
  align-items: center;
  background: #fff;
  padding: 1.5rem;
  border-radius: 10px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.contact-item i {
  font-size: 2rem;
  color: #0066cc;
  margin-right: 1rem;
}

.contact-item h3 {
  margin-bottom: 0.5rem;
  font-size: 1.2rem;
}

/* ===== Footer ===== */
footer {
  background: #333;
  color: #fff;
  padding: 2rem 0;
  text-align: center;
}

footer p {
  margin: 0.5rem 0;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .nav-container {
    flex-direction: column;
  }
  .nav-links {
    flex-direction: column;
    margin-top: 1rem;
  }
  .nav-links li {
    margin: 0.5rem 0;
  }
}