/* Custom styles for Grade Management System */

.feature-icon {
    display: flex;
    align-items: center;
    justify-content: center;
}

.card {
    transition: transform 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.btn {
    transition: all 0.2s ease-in-out;
}

.btn:hover {
    transform: translateY(-1px);
}

/* File upload styling */
.form-control[type="file"] {
    border: 2px dashed var(--bs-border-color);
    padding: 1rem;
}

.form-control[type="file"]:focus {
    border-color: var(--bs-primary);
    box-shadow: 0 0 0 0.2rem rgba(var(--bs-primary-rgb), 0.25);
}

/* Progress indicators */
.progress {
    height: 8px;
}

/* Alert styling */
.alert {
    border: none;
    border-radius: 8px;
}

/* Navigation styling */
.navbar-brand {
    font-weight: 600;
}

/* Footer */
footer {
    margin-top: auto;
}

/* Loading states */
.btn.loading {
    position: relative;
    color: transparent;
}

.btn.loading::after {
    content: "";
    position: absolute;
    width: 16px;
    height: 16px;
    top: 50%;
    left: 50%;
    margin-left: -8px;
    margin-top: -8px;
    border: 2px solid #ffffff;
    border-radius: 50%;
    border-top-color: transparent;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Responsive design improvements */
@media (max-width: 768px) {
    .display-4 {
        font-size: 2rem;
    }
    
    .feature-icon {
        width: 50px !important;
        height: 50px !important;
    }
}

/* Dark theme specific adjustments */
[data-bs-theme="dark"] .card {
    background-color: var(--bs-dark);
    border-color: var(--bs-gray-800);
}

[data-bs-theme="dark"] .bg-light {
    background-color: var(--bs-gray-800) !important;
}