:root {
    --primary-color: #4e73df;
    --secondary-color: #1cc88a;
    --warning-color: #f6c23e;
    --danger-color: #e74a3b;
    --light-color: #f8f9fc;
    --dark-color: #5a5c69;
}

body {
    font-family: 'Nunito', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: #f8f9fc;
    padding-top: 1.5rem;
    padding-bottom: 5rem;
}

/* Header et navigation */
.navbar {
    box-shadow: 0 .15rem 1.75rem 0 rgba(58, 59, 69, .15);
    background-color: white;
    margin-bottom: 1.5rem;
}

.navbar-brand {
    color: var(--primary-color);
    font-weight: 700;
    font-size: 1.25rem;
}

.navbar-nav .nav-link {
    color: var(--dark-color);
    padding: .5rem 1rem;
}

.navbar-nav .nav-link:hover {
    color: var(--primary-color);
}

.navbar-nav .active > .nav-link {
    color: var(--primary-color);
    font-weight: 700;
}

/* Carte */
.card {
    box-shadow: 0 .15rem 1.75rem 0 rgba(58, 59, 69, .1);
    border: none;
    border-radius: .35rem;
    margin-bottom: 1.5rem;
}

.card-header {
    background-color: #f8f9fc;
    border-bottom: 1px solid #e3e6f0;
    padding: 1rem 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
}

.card-body {
    padding: 1.25rem;
}

/* Boutons */
.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-primary:hover {
    background-color: #2e59d9;
    border-color: #2e59d9;
}

.btn-success {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
}

.btn-success:hover {
    background-color: #17a673;
    border-color: #17a673;
}

.btn-warning {
    background-color: var(--warning-color);
    border-color: var(--warning-color);
}

.btn-danger {
    background-color: var(--danger-color);
    border-color: var(--danger-color);
}

/* Formulaires */
.form-control {
    border-radius: .35rem;
    padding: .5rem 1rem;
    font-size: .85rem;
}

.form-control:focus {
    border-color: #bac8f3;
    box-shadow: 0 0 0 0.2rem rgba(78, 115, 223, 0.25);
}

label {
    font-weight: 600;
    color: var(--dark-color);
}

/* Tableaux */
.table {
    color: var(--dark-color);
}

.table thead th {
    background-color: #f8f9fc;
    color: var(--primary-color);
    border-top: none;
}

.table-hover tbody tr:hover {
    background-color: rgba(78, 115, 223, 0.05);
}

/* Badge */
.badge {
    font-size: 80%;
    font-weight: 600;
    padding: .3em .45em;
    border-radius: .2rem;
}

.badge-pending {
    color: #fff;
    background-color: var(--warning-color);
}

.badge-approved {
    color: #fff;
    background-color: var(--secondary-color);
}

.badge-rejected {
    color: #fff;
    background-color: var(--danger-color);
}

/* Login */
.login-card {
    max-width: 450px;
    margin: 5rem auto;
}

.login-card .card-header {
    text-align: center;
    font-size: 1.5rem;
}

.login-tabs {
    margin-bottom: 1rem;
}

.login-tabs .nav-link {
    color: var(--dark-color);
}

.login-tabs .nav-link.active {
    color: var(--primary-color);
    font-weight: 700;
    background-color: transparent;
    border-bottom: 2px solid var(--primary-color);
    border-color: transparent transparent var(--primary-color) transparent;
}

/* Dashboard */
.summary-card {
    border-left: .25rem solid;
    border-radius: .35rem;
}

.summary-card-primary {
    border-left-color: var(--primary-color);
}

.summary-card-success {
    border-left-color: var(--secondary-color);
}

.summary-card-warning {
    border-left-color: var(--warning-color);
}

.summary-card-danger {
    border-left-color: var(--danger-color);
}

.summary-card .card-body {
    padding: 1rem;
}

.summary-card .text-xs {
    font-size: .7rem;
    font-weight: 700;
    text-transform: uppercase;
}

.summary-card .h5 {
    font-size: 1.25rem;
    margin-bottom: 0;
    font-weight: 700;
}

.summary-card .icon {
    font-size: 2rem;
    opacity: .3;
}

/* Image de reçu */
.receipt-thumbnail {
    max-width: 100px;
    max-height: 100px;
    cursor: pointer;
}

.receipt-modal-img {
    max-width: 100%;
    max-height: 80vh;
}

/* Footer */
footer {
    position: fixed;
    bottom: 0;
    width: 100%;
    background-color: white;
    border-top: 1px solid #e3e6f0;
    padding: .75rem 0;
    font-size: .8rem;
    color: var(--dark-color);
}

/* Responsive */
@media (max-width: 768px) {
    .card-header {
        padding: .75rem 1rem;
    }
    
    .card-body {
        padding: 1rem;
    }
    
    .table-responsive {
        font-size: .9rem;
    }
}