body {
    background-color: #f8f9fa;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.card {
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    border: none;
}

.card-img-top {
    height: 200px;
    object-fit: cover;
}

.sidebar {
    background-color: #343a40;
    min-height: 100vh;
    padding-top: 20px;
}

.sidebar .nav-link {
    color: rgba(255, 255, 255, 0.75);
    padding: 10px 15px;
    margin-bottom: 5px;
    border-radius: 5px;
}

.sidebar .nav-link:hover {
    color: white;
    background-color: rgba(255, 255, 255, 0.1);
}

.sidebar .nav-link.active {
    color: white;
    background-color: #007bff;
}

.admin-login {
    background: linear-gradient(135deg, #6a11cb 0%, #2575fc 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.admin-login .card {
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.btn-primary {
    background-color: #007bff;
    border-color: #007bff;
}

.btn-primary:hover {
    background-color: #0069d9;
    border-color: #0062cc;
}

.alert {
    border-radius: 8px;
    border: none;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .card-img-top {
        height: 150px;
    }
    
    .sidebar {
        position: fixed;
        top: 0;
        left: 0;
        z-index: 1000;
        height: 100%;
        width: 250px;
        transform: translateX(-100%);
        transition: transform 0.3s ease-in-out;
    }
    
    .sidebar.show {
        transform: translateX(0);
    }
}

/* Progress bar styling */
.progress {
    height: 20px;
}

.progress-bar {
    background-color: #007bff;
    transition: width 0.3s ease;
}