/* Mobile Menu Toggle Button */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-around;
  width: 30px;
  height: 25px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 101;
  position: relative;
}

.mobile-menu-toggle span {
  width: 100%;
  height: 3px;
  background: linear-gradient(135deg, #1e4a7a, #2b7a9e);
  border-radius: 10px;
  transition: all 0.3s ease;
  transform-origin: center;
}

.mobile-menu-toggle:hover span {
  background: linear-gradient(135deg, #2b7a9e, #7cb342);
}

/* Animated hamburger to X */
.mobile-menu-toggle.active span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.mobile-menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* Navigation Overlay */
.nav-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(5px);
  z-index: 98;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.nav-overlay.active {
  display: block;
  opacity: 1;
}

/* Mobile Navigation Styles */
@media (max-width: 768px) {
  .mobile-menu-toggle {
    display: flex;
  }

  nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 70%;
    max-width: 300px;
    height: 100vh;
    background: linear-gradient(
      135deg,
      rgba(255, 255, 255, 0.98),
      rgba(230, 242, 255, 0.98)
    );
    backdrop-filter: blur(10px);
    box-shadow: -5px 0 20px rgba(0, 0, 0, 0.1);
    padding: 5rem 2rem 2rem;
    transition: right 0.4s cubic-bezier(0.68, -0.55, 0.27, 1.55);
    z-index: 99;
    overflow-y: auto;
  }

  nav.active {
    right: 0;
  }

  nav ul {
    flex-direction: column;
    gap: 0;
    width: 100%;
  }

  nav li {
    width: 100%;
    border-bottom: 1px solid rgba(43, 122, 158, 0.1);
  }

  nav li:last-child {
    border-bottom: none;
  }

  nav a {
    display: block;
    width: 100%;
    padding: 1rem 1.5rem;
    border-radius: 0;
    font-size: 1.1rem;
    transition: all 0.3s ease;
  }

  nav a::after {
    display: none;
  }

  nav a:hover,
  nav a.active {
    background: linear-gradient(
      135deg,
      rgba(43, 122, 158, 0.15),
      rgba(124, 179, 66, 0.1)
    );
    color: #2b7a9e;
    transform: translateX(5px);
  }

  /* Ensure header accommodates mobile menu */
  header {
    padding: 1rem 1.5rem;
  }

  .header-content {
    position: relative;
  }
}

/* Tablet adjustments */
@media (min-width: 481px) and (max-width: 768px) {
  nav {
    width: 60%;
    max-width: 350px;
  }

  nav a {
    font-size: 1.15rem;
    padding: 1.2rem 1.5rem;
  }
}

/* Very small screens */
@media (max-width: 480px) {
  nav {
    width: 80%;
  }

  nav a {
    font-size: 1rem;
    padding: 0.9rem 1.2rem;
  }

  .mobile-menu-toggle {
    width: 28px;
    height: 23px;
  }

  .mobile-menu-toggle span {
    height: 2.5px;
  }
}

/* Prevent body scroll when menu is open */
body.menu-open {
  overflow: hidden;
}

/* Accessibility improvements */
.mobile-menu-toggle:focus {
  outline: 2px solid #2b7a9e;
  outline-offset: 3px;
  border-radius: 4px;
}

nav:focus-within {
  outline: none;
}

@media (max-width: 768px) {
  .logo-icon {
    width: 32px;
    height: 32px;
  }

  .logo-text {
    font-size: 1.5rem;
  }

  .logo {
    gap: 0.5rem;
  }
}

/* Smooth transitions for all screen size changes */
@media (min-width: 769px) {
  nav {
    position: static;
    width: auto;
    height: auto;
    background: transparent;
    box-shadow: none;
    padding: 0;
    overflow: visible;
  }

  nav ul {
    flex-direction: row;
  }

  .nav-overlay {
    display: none !important;
  }
}