:root {
    --harvard-crimson: #A51C30;
    --harvard-crimson-dark: #8A1829;
    --harvard-gray: #8996A0;
    --harvard-light: #F7F7F7;
}

body {
    background-color: var(--harvard-light);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

.harvard-navbar {
    background-color: var(--harvard-crimson);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.harvard-navbar .navbar-brand,
.harvard-navbar .nav-link {
    color: white;
}

.harvard-navbar .nav-link:hover {
    color: rgba(255,255,255,0.8);
}

.btn-harvard {
    background-color: var(--harvard-crimson);
    color: white;
}

.btn-harvard:hover {
    background-color: var(--harvard-crimson-dark);
    color: white;
}

.harvard-bg {
    background-color: var(--harvard-crimson);
}

.card {
    border: none;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.card-header {
    border-bottom: none;
}

.task-actions {
    margin-top: 1rem;
}

.task-actions .btn {
    margin-right: 0.5rem;
}

.footer {
    background-color: var(--harvard-crimson);
    color: white;
    margin-top: auto;
}

/* Animações */
.card {
    transition: transform 0.2s ease-in-out;
}

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

.alert {
    animation: slideIn 0.3s ease-out;
}

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

/* Responsividade */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    .task-actions {
        display: flex;
        justify-content: space-between;
    }
    
    .task-actions .btn {
        padding: 0.375rem 0.75rem;
        margin-right: 0.25rem;
    }
}

/* Customização de formulários */
.form-control:focus,
.form-select:focus {
    border-color: var(--harvard-crimson);
    box-shadow: 0 0 0 0.2rem rgba(165, 28, 48, 0.25);
}

/* Status badges */
.badge.bg-warning {
    background-color: #ffc107 !important;
    color: #000;
}

.badge.bg-info {
    background-color: #0dcaf0 !important;
}

.badge.bg-success {
    background-color: #198754 !important;
}

.badge.bg-danger {
    background-color: #dc3545 !important;
}

/* Modal customization */
.modal-header {
    background-color: var(--harvard-crimson);
    color: white;
}

.modal-header .btn-close {
    color: white;
}