/* ==========================================================================
   Header Component Styles
   ========================================================================== */

   :root {
    /* Glass morphism variables */
    --header-glass-bg: rgba(255, 255, 255, 0.1);
    --header-glass-border: rgba(255, 255, 255, 0.2);
    --transition-default: all 0.3s ease;
    --border-radius-sm: 0.5rem;
    --border-radius-md: 1rem;
    --border-radius-lg: 1.25rem;
    --shadow-sm: 0 0.25rem 0.5rem rgba(0, 0, 0, 0.1);
    --shadow-md: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 0.5rem 2rem rgba(0, 0, 0, 0.1);
  }
  
  /* ===== Header Container ===== */
.site-header {
      padding: 1rem 0;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
      z-index: 999;
      transition: var(--transition-default);
    background: transparent;
    box-shadow: none;
    border-bottom: none;
}

.site-header.scrolled {
      background: transparent;
      box-shadow: none;
  }
  
  .site-header .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      background: var(--header-glass-bg);
      backdrop-filter: blur(0.625rem);
      -webkit-backdrop-filter: blur(0.625rem);
      border-radius: var(--border-radius-lg);
      padding: 1rem 2rem;
      border: 1px solid var(--header-glass-border);
      box-shadow: var(--shadow-lg);
      max-width: 75rem; /* 1200px */
      margin: 0 auto;
  }
  
  .site-header::before {
      content: none;
  }
  
  .site-header.scrolled::before {
        opacity: 0;
  }
  
  /* ===== Logo Styles ===== */
.site-header .logo h1 {
    font-size: 1.8rem;
    margin-bottom: 0;
    color: white;
      text-shadow: 0.0625rem 0.0625rem 0.125rem rgba(0, 0, 0, 0.2);
    animation: logoAppear 1s ease-in-out;
}

  /* ===== Navigation Styles ===== */
  .main-nav {
    animation: navFadeIn 1.2s ease-in-out;
}

.main-nav ul {
    display: flex;
    list-style: none;
      margin: 0;
      padding: 0;
}

.main-nav li {
      margin-left: 1.5625rem;
    position: relative;
      opacity: 0;
      animation: menuItemFadeIn 0.5s ease-in-out forwards;
}

.main-nav a {
    font-weight: 600;
      padding: 0.3125rem 0;
    position: relative;
    color: white;
      transition: var(--transition-default);
    display: inline-block;
      text-decoration: none;
}

  /* Underline animation for menu links */
.main-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
      height: 0.125rem; /* 2px */
    background-color: white;
      transition: var(--transition-default);
}

.main-nav a:hover {
    color: var(--secondary-color);
}

.main-nav a:hover::after {
    width: 100%;
}

  /* Staggered animation for menu items */
  .main-nav li:nth-child(1) { animation-delay: 0.3s; }
  .main-nav li:nth-child(2) { animation-delay: 0.4s; }
  .main-nav li:nth-child(3) { animation-delay: 0.5s; }
  .main-nav li:nth-child(4) { animation-delay: 0.6s; }
  
  /* ===== Dropdown Menu Styles ===== */
.has-dropdown {
    position: relative;
}

.dropdown-trigger::after {
    content: '▼';
    font-size: 0.7em;
      margin-left: 0.3125rem;
    transition: transform 0.3s ease;
}

.has-dropdown:hover .dropdown-trigger::after {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
      background: var(--header-glass-bg);
      backdrop-filter: blur(0.625rem);
      -webkit-backdrop-filter: blur(0.625rem);
      min-width: 13.75rem; /* 220px */
      box-shadow: var(--shadow-md);
      border-radius: var(--border-radius-sm);
      border: 1px solid var(--header-glass-border);
      padding: 0.9375rem 0; /* 15px */
    opacity: 0;
    visibility: hidden;
      transform: translateY(0.625rem);
    transition: all 0.3s ease-in-out;
    z-index: 200;
      will-change: transform, opacity;
}

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

.dropdown-item {
    display: block;
      padding: 0.75rem 1.125rem;
      color: var(--primary-color);
    transition: all 0.3s ease;
    position: relative;
    border-left: 0 solid var(--primary-color);
      margin: 0.125rem 0.5rem;
      border-radius: 0.25rem;
}

.dropdown-item:hover {
    background-color: rgba(214, 255, 246, 0.5);
      border-left: 0.25rem solid var(--primary-color);
      padding-left: 1.375rem;
      box-shadow: 0 0.125rem 0.5rem rgba(35, 22, 81, 0.1);
      transform: translateX(0.1875rem);
}

.dropdown-item::after {
    display: none;
}

  /* ===== Header Icons ===== */
.header-icons {
    display: flex;
    align-items: center;
      gap: 1.25rem;
    animation: iconsFadeIn 1.4s ease-in-out;
}

.header-icon {
    color: white;
    position: relative;
    cursor: pointer;
    transition: all 0.3s ease;
      width: 2.5rem;
      height: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
      background: var(--header-glass-bg);
      backdrop-filter: blur(0.3125rem);
      -webkit-backdrop-filter: blur(0.3125rem);
      box-shadow: var(--shadow-sm);
    font-size: 1.2rem;
      border: 1px solid var(--header-glass-border);
}

.header-icon:hover {
      transform: translateY(-0.1875rem);
    background: rgba(255, 255, 255, 0.25);
      box-shadow: var(--shadow-md);
}

.header-icon.clicked {
    animation: clickEffect 0.3s ease;
}

.header-icon i {
    transition: transform 0.3s ease;
}

.header-icon:hover i {
    transform: scale(1.1);
}

  /* ===== Mobile Menu Toggle ===== */
  .mobile-menu-toggle {
      width: 1.875rem;
      height: 1.5625rem;
    position: relative;
      cursor: pointer;
      display: none;
      flex-direction: column;
      justify-content: space-between;
      margin-right: 0.9375rem;
      margin-left: 0;
      order: -1;
      z-index: 101;
  }
  
  .mobile-menu-toggle span {
      display: block;
      width: 100%;
      height: 0.1875rem;
      background-color: white;
      border-radius: 0.1875rem;
    transition: all 0.3s ease;
  }
  
  .mobile-menu-toggle span.active:nth-child(1) {
      transform: translateY(0.6875rem) rotate(45deg);
  }
  
  .mobile-menu-toggle span.active:nth-child(2) {
      opacity: 0;
  }
  
  .mobile-menu-toggle span.active:nth-child(3) {
      transform: translateY(-0.6875rem) rotate(-45deg);
  }
  
  .mobile-menu-overlay {
      display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
      height: 100dvh;
      background: rgba(6, 16, 26, 0.85);
      backdrop-filter: blur(0.5rem);
      -webkit-backdrop-filter: blur(0.5rem);
      z-index: 99;
        opacity: 0;
      transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1);
      cursor: pointer;
    }

  .mobile-menu-overlay.active {
      display: block;
        opacity: 1;
      animation: fadeIn 0.5s ease forwards;
  }
  
  /* ===== Animations ===== */
  @keyframes logoAppear {
      from { opacity: 0; transform: scale(0.8); }
      to { opacity: 1; transform: scale(1); }
  }
  
  @keyframes navFadeIn {
      from { opacity: 0; transform: translateY(0.625rem); }
      to { opacity: 1; transform: translateY(0); }
  }
  
  @keyframes menuItemFadeIn {
      from { opacity: 0; transform: translateY(0.625rem); }
      to { opacity: 1; transform: translateY(0); }
  }
  
  @keyframes iconsFadeIn {
      from { opacity: 0; transform: translateX(0.625rem); }
      to { opacity: 1; transform: translateX(0); }
}

@keyframes clickEffect {
    0% { transform: scale(1); }
    50% { transform: scale(0.9); }
    100% { transform: scale(1); }
}

  @keyframes fadeIn {
      from { opacity: 0; }
      to { opacity: 1; }
  }
  
  @keyframes mobileMenuSlideIn {
      from { transform: translateX(-100%); opacity: 0; }
      to { transform: translateX(0); opacity: 1; }
  }
  
  @keyframes mobileMenuSlideDown {
      from { opacity: 0; transform: translateY(-1.25rem); }
      to { opacity: 1; transform: translateY(0); }
  }
  
  /* ===== Accessibility ===== */
  @media (prefers-reduced-motion: reduce) {
      * {
          animation-duration: 0.01ms !important;
          animation-iteration-count: 1 !important;
          transition-duration: 0.01ms !important;
          scroll-behavior: auto !important;
      }
  }
  
  /* ==========================================================================
     Media Queries
     ========================================================================== */
  
  @media (max-width: 768px) {
      .site-header .container {
          flex-direction: row;
          justify-content: space-between;
          flex-wrap: nowrap;
      }
      
      .mobile-menu-toggle {
    display: flex;
      }
      
      .main-nav {
          display: none;
      }
      
      .main-nav.active {
          display: block;
          position: fixed;
    top: 0;
    left: 0;
          width: 50%;
          height: 100vh;
          background: rgba(12, 12, 24, 0.95);
          backdrop-filter: blur(1.25rem);
          -webkit-backdrop-filter: blur(1.25rem);
          box-shadow: 0 0 1.875rem rgba(0, 0, 0, 0.5), 0.3125rem 0 1.25rem rgba(95, 75, 139, 0.2);
          padding: 0;
          z-index: 1000;
          transform: translateX(-100%);
          transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
          overflow-y: auto;
          overflow-x: hidden;
          border-right: 1px solid rgba(255, 255, 255, 0.1);
          background-image: 
              radial-gradient(circle at 20% 30%, rgba(123, 31, 162, 0.15) 0%, transparent 40%),
              radial-gradient(circle at 80% 80%, rgba(66, 103, 245, 0.1) 0%, transparent 40%);
          animation: mobileMenuSlideIn 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
      }
      
      .main-nav .close-menu {
    position: absolute;
          top: 1.25rem;
          right: 1rem;
          width: 2.5rem;
          height: 2.5rem;
          background: rgba(255, 255, 255, 0.08);
          border: 1px solid rgba(255, 255, 255, 0.1);
          border-radius: 50%;
    display: flex;
    align-items: center;
          justify-content: center;
    cursor: pointer;
          color: white;
          font-size: 1.1rem;
          transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
          z-index: 102;
    overflow: hidden;
}

      .main-nav.active ul {
          display: flex;
          flex-direction: column;
          padding: 2.5rem 1.25rem 0.5rem;
          margin: 0;
    width: 100%;
          list-style: none;
          margin-top: 3.125rem;
      }
      
      .main-nav.active li {
    width: 100%;
          margin: 0 0 1rem 0;
    opacity: 0;
          transform: translateX(-2rem);
          animation: slideInMenuItems 0.5s forwards;
    position: relative;
}

      .main-nav.active li a {
    font-size: 1.2rem;
          padding: 1rem 1.25rem;
    display: flex;
          align-items: center;
          color: rgba(255, 255, 255, 0.85);
          font-weight: 500;
          letter-spacing: 0.5px;
          border-radius: 0.6rem;
          margin-bottom: 0.3125rem;
      }
      
      .main-nav.active li a:hover {
          background: rgba(255, 255, 255, 0.15);
          transform: translateX(0.3125rem);
      }
  
    .has-dropdown .dropdown-menu {
        position: static;
          display: flex;
          flex-direction: column;
        width: auto;
          max-height: 0;
        opacity: 0;
        visibility: hidden;
          overflow: hidden;
          margin: 0.5rem 0 0 1rem;
        padding: 0;
        transition: all 0.3s ease;
          border-left: 2px solid rgba(123, 31, 162, 0.4);
    }
    
    .has-dropdown.active .dropdown-menu {
        visibility: visible;
          opacity: 1;
          max-height: 31.25rem;
          padding: 0.5rem 0;
      }
      
      body.menu-open {
          overflow: hidden;
          touch-action: none;
    position: relative;
      }
  }
  
  @keyframes slideInMenuItems {
      to {
          opacity: 1;
        transform: translateX(0);
    }
}
/* ===== Login Dropdown Styles ===== */
.login-dropdown {
    position: absolute;
    top: 3.125rem;
    right: -0.625rem;
    min-width: 15rem;
    background: var(--header-glass-bg);
    backdrop-filter: blur(0.625rem);
    -webkit-backdrop-filter: blur(0.625rem);
    box-shadow: var(--shadow-md);
    border-radius: var(--border-radius-sm);
    padding: 0.9375rem 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(0.625rem);
    transition: all 0.3s cubic-bezier(0.68, -0.55, 0.27, 1.55);
    z-index: 200;
    overflow: hidden;
    border: 1px solid var(--header-glass-border);
}

.login-dropdown::before {
    content: '';
    position: absolute;
    top: -0.5rem;
    right: 1.25rem;
    width: 0.9375rem;
    height: 0.9375rem;
    background: white;
    transform: rotate(45deg);
    border-top: 1px solid rgba(214, 255, 246, 0.5);
    border-left: 1px solid rgba(214, 255, 246, 0.5);
    z-index: -1;
}

.login-icon:hover .login-dropdown,
.login-dropdown.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.login-dropdown-item {
    display: flex;
    align-items: center;
    padding: 0.75rem 1.25rem;
    color: var(--text-color, #2d3748);
    transition: all 0.3s ease;
    text-decoration: none;
    border-left: 0.1875rem solid transparent;
    font-weight: 500;
}

.login-dropdown-item:hover {
    background-color: rgba(214, 255, 246, 0.3);
    border-left-color: var(--primary-color);
    color: var(--primary-color);
}

.login-dropdown-item:not(:last-child) {
    border-bottom: 1px solid rgba(214, 255, 246, 0.4);
}

.login-dropdown-item i {
    margin-right: 0.75rem;
    font-size: 1rem;
    width: 1.25rem;
    text-align: center;
    color: var(--primary-color);
    transition: transform 0.3s ease;
}

.login-dropdown-item:hover i {
    transform: translateX(-0.25rem);
}