/* ==== HEADER & MENU ==== */
header {
    width: 100%;
    position: absolute;
    top: 20px;
    left: 0;
    z-index: 2;
    padding: 10px 15px;
}

.logo {
    display: flex;
    align-items: center;
    padding: 10px 20px;
}

.logo h1 {
    font-size: 36px;
    margin: 0;
    color: #fff;
}

.logo span {
    color: #83D0FF;
}

.logo img {
    height: 70px;
    width: auto;
    margin-right: 10px;
}

.logo:hover{
    text-decoration: none;
}

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

nav ul li {
    margin: 0 10px;
    display: flex;
    align-items: center;
}

nav ul li a,
.nav-link {
    color: #fff !important;
    text-decoration: none;
}

.navbar-toggler-icon {
    filter: brightness(0) invert(1);
}

.navbar-toggler {
    border-color: #fff !important; 
    position: absolute;
    right: 10px;
    top: 10px;
    z-index: 1001;
}

nav.navbar {
    justify-content: flex-start;
}

.custom-button {
    display: inline-block;
    padding: 10px 20px;
    background-color: #2c71aa;
    border-radius: 5px;
    transition: background-color 0.3s, transform 0.3s;
}

.custom-button:hover {
    background-color: #2980b9;
}

.custom-button:active {
    transform: scale(0.95);
}

/* Dropdown menu styling */
.navbar-nav .dropdown-menu {
    background-color: #2c71aa;
    padding: 10px;
}

.navbar-nav .dropdown-menu .dropdown-item {
    color: #fff;
    background-color: transparent;
    padding: 5px 10px;
    border-radius: 5px;
    display: inline-block;
    margin: 3px 0;
    transition: background-color 0.3s;
}

.navbar-nav .dropdown-menu .dropdown-item:hover, 
.navbar-nav .nav-item .nav-link:focus {
    background-color: #2980b9;
    color: #fff;
}

/* ===== RESPONSIVE HEADER ===== */
@media (max-width: 991px) {
    header .row {
        display: flex;
        justify-content: space-between;
        align-items: center;
        position: relative;
        padding: 10px;
    }

    .logo {
        position: absolute;
        top: -5px;
        left: 10px;
        z-index: 1001;
    }

    .logo h1 {
        font-size: 24px;
    }

    .logo img {
        height: 50px;
        margin-right: 5px;
    }

    .navbar-toggler {
        padding: 5px 10px;
        position: absolute;
        right: 10px;
        top: 10px;
        z-index: 1001;
    }

    .navbar-collapse {
        position: absolute;
        top: 50px;
        right: 10px;
        background-color: #2c71aa;
        padding: 10px;
        box-shadow: -2px 2px 10px rgba(0,0,0,0.2);
        display: none;
        border-radius: 5px;
        width: auto;
        max-width: 90vw;
        overflow-y: auto;
    }

    .navbar-collapse.show {
        display: block;
    }

    .navbar-nav {
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        width: 100%;
    }

    .nav-item {
        padding: 5px 10px;
        white-space: nowrap;
        width: 100%;
    }

    .nav-link {
        color: #fff !important;
        font-size: 16px;
        font-weight: bold;
        text-align: left;
        width: 100%;
    }

    /* ==== DROPDOWN OVERLAY MOBILE ==== */
    .dropdown-overlay {
      position: absolute;
      z-index: 9999;
      background-color: #1f5c8f;
      border-radius: 8px;
      padding: 6px 0;
      box-shadow: 0 6px 20px rgba(0,0,0,0.4);
      min-width: 150px;
      max-width: calc(100% - 20px);
      overflow: hidden;
      display: none;
      flex-direction: column;
    }

    .dropdown-overlay.show {
      display: flex;
    }

    .dropdown-overlay .dropdown-inner {
      max-height: 60vh;
      overflow-y: auto;
    }

    .dropdown-overlay .dropdown-item {
      color: #fff;
      padding: 12px 16px;
      display: block;
      text-align: left;
    }

    .dropdown-overlay .dropdown-item:hover {
      background-color: #2980b9;
    }

    .dropdown-backdrop {
      position: fixed;
      inset: 0;
      background: rgba(0,0,0,0.2);
      z-index: 9998;
      display: none;
    }

    .dropdown-backdrop.show {
      display: block;
    }
}

/* ==== DESKTOP ==== */
@media (min-width: 992px) {
  .dropdown-overlay,
  .dropdown-backdrop {
    display: none !important;
  }
}