/* ===================================================================
   File: style.css
   Descrizione: Stili personalizzati per l'applicazione Libreria
   Data: 2024
   =================================================================== */

/* Variabili CSS personalizzate */
:root {
    --primary-color: #00426B; /* #0d6efd; */
    --secondary-color: #6c757d;
    --success-color: #198754;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #0dcaf0;
    --light-color: #f8f9fa;
    --dark-color: #212529;
    --border-radius: 0.375rem;
    --box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    --transition: all 0.15s ease-in-out;
}

/* Reset e base */
* {
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
    background-color: #f8f9fa;
}

/* Layout principale */
.public-content {
    min-height: calc(100vh - 200px);
    padding-top: 2rem;
}

.admin-content {
    min-height: calc(100vh - 200px);
    padding-top: 1rem;
    background-color: #f8f9fa;
}

/* Navbar personalizzazioni */
.navbar-brand img {
    transition: var(--transition);
}

.navbar-brand:hover img {
    transform: scale(1.05);
}

.navbar-nav .nav-link {
    transition: var(--transition);
    border-radius: var(--border-radius);
    margin: 0 0.25rem;
}

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

.navbar-nav .nav-link.active {
    background-color: rgba(255, 255, 255, 0.2);
    font-weight: 600;
}

/* Cards personalizzate */
.card {
    border: none;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    border-radius: var(--border-radius);
}

.card:hover {
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
    transform: translateY(-2px);
}

.card-header {
    background: linear-gradient(135deg, var(--primary-color), #0056b3);
    color: white;
    border-radius: var(--border-radius) var(--border-radius) 0 0 !important;
    font-weight: 600;
}

/* Libro cards */
.libro-card {
    height: 100%;
    transition: var(--transition);
}

.libro-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 0.75rem 1.5rem rgba(0, 0, 0, 0.15);
}

.libro-card .card-img-top {
    height: 200px;
    object-fit: cover;
    background: linear-gradient(45deg, #f8f9fa, #e9ecef);
}

.libro-card .card-body {
    display: flex;
    flex-direction: column;
}

.libro-card .card-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.libro-card .card-text {
    flex-grow: 1;
    font-size: 0.9rem;
}

.libro-card .libro-meta {
    font-size: 0.8rem;
    color: var(--secondary-color);
    margin-top: auto;
}

/* Badge di stato */
.badge-disponibile {
    background-color: var(--success-color);
}

.badge-prestato {
    background-color: var(--danger-color);
}

.badge-custom {
    font-size: 0.75rem;
    padding: 0.35em 0.65em;
}

/* Buttons personalizzati */
.btn {
    border-radius: var(--border-radius);
    transition: var(--transition);
    font-weight: 500;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 0.25rem 0.5rem rgba(0, 0, 0, 0.15);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), #0056b3);
    border: none;
}

.btn-success {
    background: linear-gradient(135deg, var(--success-color), #146c43);
    border: none;
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger-color), #b02a37);
    border: none;
}

.btn-warning {
    background: linear-gradient(135deg, var(--warning-color), #ffca2c);
    border: none;
    color: var(--dark-color);
}

/* Forms */
.form-control, .form-select {
    border-radius: var(--border-radius);
    border: 1px solid #ced4da;
    transition: var(--transition);
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.25);
}

.form-label {
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 0.5rem;
}

/* Tables */
.table {
    background-color: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
}

.table thead th {
    background: linear-gradient(135deg, var(--primary-color), #0056b3);
    color: white;
    border: none;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.875rem;
    letter-spacing: 0.5px;
}

.table tbody tr {
    transition: var(--transition);
}

.table tbody tr:hover {
    background-color: rgba(13, 110, 253, 0.05);
}

.table-responsive {
    border-radius: var(--border-radius);
}

/* Alerts personalizzati */
.alert {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.alert-success {
    background: linear-gradient(135deg, #d1e7dd, #a3d9a4);
    color: #0f5132;
}

.alert-danger {
    background: linear-gradient(135deg, #f8d7da, #f1aeb5);
    color: #842029;
}

.alert-warning {
    background: linear-gradient(135deg, #fff3cd, #ffecb5);
    color: #664d03;
}

.alert-info {
    background: linear-gradient(135deg, #d1ecf1, #b6e3f0);
    color: #055160;
}

/* Pagination */
.pagination .page-link {
    border-radius: var(--border-radius);
    margin: 0 0.125rem;
    border: 1px solid #dee2e6;
    color: var(--primary-color);
    transition: var(--transition);
}

.pagination .page-link:hover {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
    transform: translateY(-1px);
}

.pagination .page-item.active .page-link {
    background: linear-gradient(135deg, var(--primary-color), #0056b3);
    border-color: var(--primary-color);
}

/* Search box */
.search-box {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.search-box .form-control {
    border-radius: 50px;
    padding: 0.75rem 1.5rem;
}

.search-box .btn {
    border-radius: 50px;
    padding: 0.75rem 2rem;
}

/* Stats cards */
.stats-card {
    background: linear-gradient(135deg, var(--primary-color), #0056b3);
    color: white;
    border-radius: var(--border-radius);
    padding: 1.5rem;
    text-align: center;
    transition: var(--transition);
}

.stats-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
}

.stats-card .stats-number {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.stats-card .stats-label {
    font-size: 0.9rem;
    opacity: 0.9;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stats-card.success {
    background: linear-gradient(135deg, var(--success-color), #146c43);
}

.stats-card.warning {
    background: linear-gradient(135deg, var(--warning-color), #ffca2c);
    color: var(--dark-color);
}

.stats-card.danger {
    background: linear-gradient(135deg, var(--danger-color), #b02a37);
}

/* Breadcrumb */
.breadcrumb {
    background-color: transparent;
    padding: 0;
}

.breadcrumb-item + .breadcrumb-item::before {
    content: "›";
    font-weight: 600;
    color: var(--primary-color);
}

/* Loading spinner */
.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
}

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

/* Responsive adjustments */
@media (max-width: 768px) {
    .libro-card .card-img-top {
        height: 150px;
    }
    
    .stats-card .stats-number {
        font-size: 2rem;
    }
    
    .table-responsive {
        font-size: 0.875rem;
    }
    
    .btn {
        font-size: 0.875rem;
        padding: 0.5rem 1rem;
    }
}

@media (max-width: 576px) {
    .public-content, .admin-content {
        padding-top: 1rem;
    }
    
    .search-box {
        padding: 1rem;
    }
    
    .card-body {
        padding: 1rem;
    }
}

/* Utility classes */
.text-gradient {
    background: linear-gradient(135deg, var(--primary-color), #0056b3);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
}

.shadow-custom {
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15) !important;
}

.border-custom {
    border: 2px solid var(--primary-color) !important;
}

.bg-gradient-primary {
    background: linear-gradient(135deg, var(--primary-color), #0056b3) !important;
}

/* Print styles */
@media print {
    .navbar, .breadcrumb, .btn, .pagination, footer {
        display: none !important;
    }
    
    .card {
        box-shadow: none !important;
        border: 1px solid #dee2e6 !important;
    }
    
    body {
        background-color: white !important;
    }
}