/**
 * Login Page Styles
 * TM COMPUTER Quiz Management System
 */

body {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.card {
    border-radius: 20px;
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.card-body {
    padding: 3rem !important;
}

.form-control, .input-group-text {
    border-radius: 10px;
    border: 1px solid #e0e0e0;
    transition: all 0.3s ease;
}

.form-control:focus {
    border-color: #667eea;
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
}

.btn-check:checked + .btn {
    background-color: #667eea;
    border-color: #667eea;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    border-radius: 10px;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.btn-outline-primary:hover {
    background-color: #667eea;
    border-color: #667eea;
}

.btn-outline-success:hover {
    background-color: #28a745;
    border-color: #28a745;
}

.input-group-text {
    background-color: #f8f9fa;
    border-right: none;
}

.form-control {
    border-left: none;
}

.form-control:focus + .input-group-text {
    border-color: #667eea;
}

.alert {
    border-radius: 10px;
    border: none;
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.text-primary {
    color: #667eea !important;
}

.btn-group .btn {
    border-radius: 10px;
    margin: 0 5px;
}

.btn-group .btn:first-child {
    margin-left: 0;
}

.btn-group .btn:last-child {
    margin-right: 0;
}

/* Password toggle button */
#toggle-password {
    border-left: none;
    border-radius: 0 10px 10px 0;
}

.form-control:focus {
    z-index: 1;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .card-body {
        padding: 2rem !important;
    }
    
    .container-fluid {
        padding: 1rem;
    }
}

/* Loading spinner */
.spinner-border-sm {
    width: 1rem;
    height: 1rem;
}

/* Custom checkbox */
.form-check-input:checked {
    background-color: #667eea;
    border-color: #667eea;
}

/* Links */
a {
    transition: color 0.3s ease;
}

a:hover {
    color: #764ba2 !important;
}

/* Logo styling */
img[alt="Logo"] {
    filter: drop-shadow(0 4px 8px rgba(0,0,0,0.1));
}

/* Animation for form elements */
.form-control, .btn {
    animation: fadeInUp 0.5s ease;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}