/* Gestionale Libri - Stile Web */

:root {
    --bordeaux: #800020;
    --bordeaux-light: #b3334d;
    --rosa-chiaro: #fff5f7;
    --rosa-hover: #ffe6eb;
    --grigio-chiaro: #f5f5f5;
    --grigio: #666;
    --bianco: #ffffff;
    --nero: #333;
    --successo: #28a745;
    --errore: #dc3545;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

/* Header */
header {
    background: var(--bordeaux);
    color: var(--bianco);
    padding: 1.5rem 2rem;
    text-align: center;
}

header h1 {
    font-size: 2rem;
    margin-bottom: 0.3rem;
}

header p {
    opacity: 0.9;
    font-size: 0.9rem;
}

/* Navigazione */
nav {
    background: var(--nero);
    padding: 0.8rem 2rem;
    display: flex;
    gap: 1.5rem;
    justify-content: center;
}

nav a {
    color: var(--bianco);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    transition: background 0.3s;
}

nav a:hover, nav a.active {
    background: var(--bordeaux);
}

/* Main Content */
main {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1rem;
}

/* Hero Section */
.hero {
    background: var(--bianco);
    padding: 3rem;
    text-align: center;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    margin-bottom: 2rem;
}

.hero h2 {
    color: var(--bordeaux);
    margin-bottom: 0.5rem;
}

.hero p {
    color: var(--grigio);
    margin-bottom: 1.5rem;
}

/* Stats */
.stats {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 1.5rem;
}

.stat-card {
    background: var(--rosa-chiaro);
    padding: 1.5rem 2rem;
    border-radius: 8px;
    border: 2px solid var(--bordeaux);
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--bordeaux);
}

.stat-label {
    color: var(--grigio);
    font-size: 0.9rem;
}

/* Bottoni */
.btn {
    display: inline-block;
    padding: 0.7rem 1.5rem;
    border: 2px solid var(--bordeaux);
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 0.95rem;
}

.btn-primary {
    background: var(--rosa-chiaro);
    color: var(--bordeaux);
}

.btn-primary:hover {
    background: var(--rosa-hover);
}

.btn-secondary {
    background: var(--bianco);
    color: var(--bordeaux);
}

.btn-secondary:hover {
    background: var(--rosa-chiaro);
}

.btn-small {
    padding: 0.4rem 0.8rem;
    font-size: 0.85rem;
}

.btn-edit {
    border-color: #17a2b8;
    color: #17a2b8;
}

.btn-delete {
    border-color: var(--errore);
    color: var(--errore);
}

.btn-delete:hover {
    background: var(--errore);
    color: var(--bianco);
}

/* Page Header */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.page-header h2 {
    color: var(--bordeaux);
}

.badge {
    background: var(--bordeaux);
    color: var(--bianco);
    padding: 0.4rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
}

/* Alert Messages */
.alert {
    padding: 1rem;
    border-radius: 5px;
    margin-bottom: 1rem;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* Search Form */
.search-form {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.search-form input {
    flex: 1;
    padding: 0.7rem 1rem;
    border: 2px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
}

.search-form input:focus {
    border-color: var(--bordeaux);
    outline: none;
}

/* Table */
.table-container {
    background: var(--bianco);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

table {
    width: 100%;
    border-collapse: collapse;
}

thead {
    background: var(--bordeaux);
    color: var(--bianco);
}

th, td {
    padding: 1rem;
    text-align: left;
}

tbody tr:nth-child(even) {
    background: var(--grigio-chiaro);
}

tbody tr:hover {
    background: var(--rosa-chiaro);
}

.actions {
    display: flex;
    gap: 0.5rem;
}

/* Form */
.form-container {
    background: var(--bianco);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    max-width: 600px;
    margin: 0 auto;
}

.form-container h2 {
    color: var(--bordeaux);
    margin-bottom: 1.5rem;
}

.form-group {
    margin-bottom: 1.2rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.4rem;
    font-weight: 600;
    color: var(--nero);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.7rem;
    border: 2px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--bordeaux);
    outline: none;
}

.form-group small {
    color: var(--grigio);
    font-size: 0.85rem;
}

.form-actions {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

/* Book Detail */
.book-detail {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.book-info {
    background: var(--bianco);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.book-info h2 {
    color: var(--bordeaux);
    margin-bottom: 0.5rem;
}

.book-info .author {
    color: var(--grigio);
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

.book-meta {
    margin-bottom: 1.5rem;
}

.meta-item {
    padding: 0.5rem 0;
    border-bottom: 1px solid #eee;
}

.meta-item .label {
    font-weight: 600;
    margin-right: 0.5rem;
}

.stars {
    color: #ffc107;
    font-size: 1.2rem;
}

.book-actions {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

/* Reviews */
.reviews-section {
    background: var(--bianco);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.reviews-section h3 {
    color: var(--bordeaux);
    margin-bottom: 1rem;
}

.review-card {
    background: var(--grigio-chiaro);
    padding: 1rem;
    border-radius: 5px;
    margin-bottom: 1rem;
}

.review-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
}

.reviewer {
    font-weight: bold;
}

.review-date {
    color: var(--grigio);
    font-size: 0.85rem;
}

.review-stars {
    color: #ffc107;
    margin-bottom: 0.5rem;
}

.review-form {
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 2px solid #eee;
}

.review-form h4 {
    color: var(--bordeaux);
    margin-bottom: 1rem;
}

.no-reviews {
    color: var(--grigio);
    font-style: italic;
}

/* Book Grid */
.book-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 1rem;
}

.book-card {
    background: var(--bianco);
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    border-left: 4px solid var(--bordeaux);
}

.book-card h4 {
    color: var(--bordeaux);
    margin-bottom: 0.5rem;
}

.book-card .author {
    color: var(--grigio);
    margin-bottom: 0.3rem;
}

.book-card .genre {
    background: var(--rosa-chiaro);
    color: var(--bordeaux);
    display: inline-block;
    padding: 0.2rem 0.6rem;
    border-radius: 15px;
    font-size: 0.8rem;
    margin-bottom: 1rem;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 3rem;
    background: var(--bianco);
    border-radius: 8px;
}

.empty-state p {
    color: var(--grigio);
    margin-bottom: 1rem;
}

/* Footer */
footer {
    text-align: center;
    padding: 1.5rem;
    background: var(--nero);
    color: var(--bianco);
    margin-top: 3rem;
}

/* Responsive */
@media (max-width: 768px) {
    nav {
        flex-wrap: wrap;
    }

    .book-detail {
        grid-template-columns: 1fr;
    }

    .search-form {
        flex-direction: column;
    }

    table {
        font-size: 0.9rem;
    }

    th, td {
        padding: 0.7rem 0.5rem;
    }

    .actions {
        flex-direction: column;
    }
}