/* Header Styles for Tek Index Website */

.header {
  background-color: #fff;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  transition: all 0.3s ease;
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 20px;
  max-width: var(--container-width);
  margin: 0 auto;
}

.logo {
  display: flex;
  align-items: center;
}

.logo img {
  height: 50px;
  width: auto;
}

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

.nav-item {
  position: relative;
  margin-left: 30px;
}

.nav-link {
  color: var(--dark-text);
  font-weight: 500;
  font-size: 16px;
  padding: 10px 0;
  display: block;
  transition: color 0.3s ease;
}

.nav-link:hover {
  color: var(--primary-color);
}

.nav-link.active {
  color: var(--primary-color);
}

/* Dropdown Menu */
.dropdown {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  background-color: #fff;
  min-width: 200px;
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
  border-radius: 4px;
  padding: 10px 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all 0.3s ease;
  z-index: 100;
}

.dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-item {
  display: block;
  padding: 10px 20px;
  color: var(--dark-text);
  font-size: 14px;
  transition: all 0.3s ease;
}

.dropdown-item:hover {
  background-color: #f8f9fa;
  color: var(--primary-color);
  padding-left: 25px;
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 30px;
  height: 21px;
  cursor: pointer;
  z-index: 1001;
}

.menu-toggle span {
  display: block;
  height: 3px;
  width: 100%;
  background-color: var(--dark-text);
  border-radius: 3px;
  transition: all 0.3s ease;
}

/* Responsive Styles */
@media (max-width: 992px) {
  .menu-toggle {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background-color: #fff;
    flex-direction: column;
    padding: 80px 20px 30px;
    transition: right 0.3s ease;
    box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
    overflow-y: auto;
  }

  .nav-menu.active {
    right: 0;
  }

  .nav-item {
    margin: 0;
    width: 100%;
    border-bottom: 1px solid #eee;
  }

  .nav-link {
    padding: 15px 0;
  }

  .dropdown-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    padding: 0 0 0 15px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }

  .dropdown.active .dropdown-menu {
    max-height: 500px;
  }

  .dropdown-item {
    padding: 10px 15px;
  }

  /* Hamburger Animation */
  .menu-toggle.active span:nth-child(1) {
    transform: translateY(9px) rotate(45deg);
  }

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

  .menu-toggle.active span:nth-child(3) {
    transform: translateY(-9px) rotate(-45deg);
  }
}

/* Overlay for mobile menu */
.overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.overlay.active {
  opacity: 1;
  visibility: visible;
}

/* Scroll Header */
.header.scrolled {
  background-color: #fff;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

/* Space for fixed header */
.header-space {
  height: 80px;
}