/* Main styles */
/*
.banner {
    background: linear-gradient(135deg, #2c3e50, #3498db);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.banner {
    background: linear-gradient(135deg, #ffffff, #e6f3f8);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.navbar-brand {
    font-weight: 650;
    font-size: 2rem;
    letter-spacing: 1px;
}

.navbar-brand > .blue4d {
    color: #048db2;
}

.nav-link {
    transition: all 0.3s ease;
    font-size: 1.1rem;
    font-weight: 600;
}

.nav-link:hover {
    transform: translateY(-2px);
}

.main-content {
    min-height: calc(100vh - 140px);
    padding-top: 2rem;
}

.card-header {
    cursor: pointer;
}

.card-header:hover {
    background-color: #428bca;
    color: white;
    transition: background-color 0.3s ease;
}

.card-header:hover a {
    color: white;
    transition: color 0.3s ease;
    text-decoration: none;
}
*/
.navbar {
    background-color: #fff;
    height: 80px;
    margin: 20px;
    border-radius: 16px;
    padding: 0.5rem;
}
.navbar-brand {
    font-weight: 500;
    color: #666666;
    font-size: 24px;
    transition: 0.3s color;
}

.login-button {
    background-color: #666666;
    color: #fff;
    font-size: 14px;
    padding: 8px 20px;
    border-radius: 50px;
    text-decoration: none;
    transition: 0.3s background-color;
}

.login-button:hover {
    background-color: #333333;
}

.navbar-toggler {
    border: none;
    font-size: 1.25rem;
}

.navbar-toggler:focus, .btn-close:focus {
    box-shadow: none;
    outline: none;
}

.nav-link {
    color: #666777;
    font-weight: 500;
    position: relative;
}

.nav-link:hover, .nav-link.active {
    color: #000;
}

@media (min-width: 991px) {
    .nav-link::before {
        content: "";
        position: absolute;
        bottom: 0;
        left: 50%;
        transform: translateX(-50%);
        width: 0;
        height: 2px;
        background-color: #666666;
        visibility: hidden;
        transition: 0.3s ease-in-out;
    }

    .nav-link:hover::before, .nav-link.active::before {
        width: 100%;
        visibility: visible;
    }
}

.site-footer {
    padding: 1rem;
    text-align: center;
}

html, body {
    height: 100%;
    margin: 0;
}

.wrapper {
    min-height: 100%;
    display: flex;
    flex-direction: column;
}

.main-content {
    flex: 1;
}