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

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background: #f0f4f8;
  color: #1a2e44;
  line-height: 1.6;
  overflow-x: hidden;
}

header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 9%;
  background: rgba(255, 255, 255, 0.404);
  backdrop-filter: blur(10px);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 3rem;
  z-index: 1000;
  transition: background 0.3s ease;
}

header.scrolled {
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.logo {
  font-weight: 600;
  font-size: 1.8rem;
  color: #0b398b;
  display: flex;
  align-items: center;
}

.logo img {
  width: 45px;
  height: auto;
  margin-right: 12px;
}

.menu-btn {
  display: none;
  font-size: 2rem;
  color: white;
  cursor: pointer;
}
nav a {
  margin: 0 1.2rem;
  text-decoration: none;
  color: #0b398b;
  font-weight: 500;
  font-size: 1rem;
  position: relative;
  transition: color 0.3s ease;
}

nav a::after {
  content: "";
  position: absolute;
  width: 0;
  height: 2px;
  bottom: -5px;
  left: 0;
  background-color: #ffcb47;
  transition: width 0.3s ease;
}

nav a:hover::after,
nav a.active::after {
  width: 100%;
}

nav a.active,
nav a:hover {
  color: #ffcb47;
}
    /* Menu Button (hidden on desktop) */
      .menu-btn {
        display: none;
        font-size: 2rem;
        color: white;
        cursor: pointer;
      }

   /* Responsive Navbar */
    @media (max-width: 768px) {
    
     .nav-links {
          position: absolute;
          top: 90px;
          right: 0;
          background: rgba(255, 255, 255, 0.9);
          flex-direction: column;
          width:200px; 
          text-align: left;
          padding: 20px;
          display: none;
        }

        .nav-links.show {
          display: flex;
        }

        .nav-links a {
          padding: 10px 0;
          font-size: 16px;
          border-bottom: 1px solid rgba(0, 0, 0, 0.1);
        }

        .menu-btn {
          display: block;
          position: absolute;
          right: 20px; 
          top: 20px;
          margin: 0;
        color: #0b398b;
        }

        .brand-top {
          font-size: 1.5rem; 
          left: 15px;
        }
    }
 /* Responsive Navbar for 480px */
      @media (max-width: 480px) {
        .nav-links {
          position: absolute;
          top: 70px; 
          right: 0;
          background: rgba(255, 255, 255, 0.9);
          flex-direction: column;
          width: 100%; 
          text-align: left;
          padding: 15px;
          display: none; 
        }

        .nav-links.show {
          display: flex;
        }

        .nav-links a {
          padding: 10px 0;
          font-size: 16px;
          border-bottom: 1px solid rgba(0, 0, 0, 0.1);
        }

        .menu-btn {
          display: block;
          position: absolute;
          right: 20px; 
          top: 20px;
          margin: 0;
        color: #0b398b;
        }

        .brand-top {
          font-size: 1.5rem; 
          left: 15px;
        }
      }

#select-lang {
  padding: 10px 15px;
  font-size: 16px;
  font-family: "Segoe UI", sans-serif;
  color: #ffffff;
  background-color: #1e3a8a;
  border: 2px solid #1e40af;
  border-radius: 8px;
  outline: none;
  cursor: pointer;
  transition: all 0.3s ease;
  appearance: none;
  background-image: url("data:image/svg+xml;charset=US-ASCII,%3Csvg xmlns='http://www.w3.org/2000/svg' width='292.4' height='292.4'%3E%3Cpath fill='%23ffffff' d='M287 69.4L166.6 189.8c-7.8 7.8-20.5 7.8-28.3 0L5 69.4C-2.7 61.7-2.7 48.8 5 41c7.8-7.8 20.5-7.8 28.3 0L146.3 153 258.7 41c7.8-7.8 20.5-7.8 28.3 0 7.7 7.8 7.7 20.6 0 28.4z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  background-size: 12px;
  min-width: 120px;
}

#select-lang:hover {
  background-color: #1d4ed8;
  border-color: #2563eb;
}

#select-lang:focus {
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.4);
}

.rd-section {
  max-width: 1200px;
  margin: 60px auto;
  padding: 0 20px;
  text-align: center;
}

.rd-section h2 {
  font-size: 2.5rem;
  color: #1a2e44;
  margin-bottom: 15px;
  text-transform: uppercase;
  letter-spacing: 2px;
  position: relative;
  margin-top: 100px;
}

.rd-section h2::after {
  content: "";
  width: 50px;
  height: 4px;
  background: #3498db;
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
}

.subtitle {
  font-size: 1.1rem;
  color: #34495e;
  margin-bottom: 50px;
  font-style: italic;
}

.rd-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  padding: 20px;
}

.rd-item {
  background: #fff;
  border-radius: 15px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  overflow: hidden;
  transition: transform 0.3s ease;
  padding: 20px;
  min-height: 300px;
  display: flex;
  align-items: center;
}

.rd-item:hover {
  transform: translateY(-10px);
}

.rd-item img {
  width: 100%;
  max-width: 300px;
  height: auto;
  border-radius: 10px;
  object-fit: cover;
  transition: transform 0.3s ease;
}

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

.rd-text {
  padding: 0 20px;
  text-align: left;
}

.rd-text h3 {
  font-size: 1.4rem;
  color: #2c3e50;
  margin-bottom: 10px;
  font-weight: 600;
}

.rd-text p {
  font-size: 1rem;
  color: #7f8c8d;
  line-height: 1.5;
}

/* responsive  */
@media (max-width: 1024px) {
  header {
    padding: 1rem 2rem;
  }

  .rd-section h2 {
    font-size: 2rem;
  }

  .rd-item {
    flex-direction: column;
    text-align: center;
  }

  .rd-text {
    padding: 20px 0 0;
    text-align: center;
  }

  .rd-item img {
    max-width: 80%;
  }

  .footer-content {
    grid-template-columns: repeat(2, 1fr);
    margin-left: 20px;
    gap: 30px;
  }

  .content {
    grid-template-columns: 1fr;
    margin-left: 0;
  }

  .map {
    margin-right: 0;
  }
}

@media (max-width: 768px) {
  header {
    height: auto;
    flex-direction: column;
    align-items: flex-start;
    padding: 1rem 1.5rem;
  }

  .logo {
    font-size: 1.5rem;
  }

  nav {
    margin-top: 10px;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
  }

  nav a {
    margin: 0.5rem 0.8rem;
    font-size: 0.9rem;
  }

  .rd-section h2 {
    font-size: 1.7rem;
  }

  .rd-grid {
    gap: 20px;
  }

  .rd-item {
    padding: 15px;
    min-height: auto;
  }

  .footer-content {
    grid-template-columns: 1fr;
    margin-left: 0;
  }

  .footer-section h3 {
    font-size: 18px;
  }

  .footer-bottom {
    font-size: 13px;
  }
}

@media (max-width: 480px) {
  .rd-section h2 {
    font-size: 1.4rem;
  }

  .subtitle {
    font-size: 1rem;
  }

  .rd-text h3 {
    font-size: 1.2rem;
  }

  .rd-text p {
    font-size: 0.9rem;
  }

  .footer-section ul li a {
    font-size: 0.8rem;
  }
}