/*
  Pages Layout & Content
  Stili per homepage, capitoli, breadcrumb, navigazione
*/

/* Container pagina */
.page-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 2rem;
    animation: fadeIn 0.3s ease-in;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Breadcrumb */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 2rem;
    font-size: 1rem;
    color: var(--text-secondary);
}

.breadcrumb a {
    color: var(--text-secondary);
    transition: color 0.2s;
}

.breadcrumb a:hover {
    color: var(--logo-gold);
}

.breadcrumb .current {
    color: var(--text-primary);
    font-weight: 600;
}

.breadcrumb .separator {
    color: var(--logo-gold);
    font-weight: 700;
}

/* Page Header */
.page-header {
    text-align: center;
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 2px solid var(--border-color);
}

.page-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.page-header .subtitle {
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin: 0;
}

/* Abstract Section */
.abstract-section {
    background-color: var(--bg-secondary);
    padding: 2rem;
    border-radius: 12px;
    margin-bottom: 3rem;
    border-left: 4px solid var(--logo-gold);
}

.abstract-section h2 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.abstract-section p {
    font-size: 1.0625rem;
    line-height: 1.7;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.abstract-section p:last-child {
    margin-bottom: 0;
}

/* Index Section */
.index-section {
    margin-top: 3rem;
}

.index-section h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 2rem;
    color: var(--text-primary);
}

.index-nav {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.index-item {
    background-color: var(--bg-secondary);
    border-radius: 12px;
    padding: 1.5rem;
    transition: transform 0.2s, box-shadow 0.2s;
}

.index-item:hover {
    transform: translateX(8px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.dark-mode .index-item:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.index-link {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    transition: color 0.2s;
}

.index-link:hover {
    color: var(--logo-gold);
}

.index-number {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--logo-gold);
    color: var(--bg-primary);
    border-radius: 8px;
    font-size: 1.25rem;
    font-weight: 700;
    flex-shrink: 0;
}

.index-title {
    flex: 1;
}

.index-subsections {
    margin-top: 1rem;
    margin-left: 56px;
    list-style: none;
}

.index-subsections li {
    margin-bottom: 0.5rem;
}

.index-subsections a {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    transition: color 0.2s, padding-left 0.2s;
    display: inline-block;
}

.index-subsections a:hover {
    color: var(--logo-gold);
    padding-left: 8px;
}

/* Chapter Content */
.chapter-content {
    line-height: 1.7;
}

.chapter-content h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-top: 3rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--border-color);
}

.chapter-content h2:first-child {
    margin-top: 0;
}

.chapter-content h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
    scroll-margin-top: 100px;
}

.chapter-content p {
    font-size: 1.0625rem;
    margin-bottom: 1.25rem;
    color: var(--text-primary);
}

.chapter-content strong {
    font-weight: 700;
    color: var(--logo-gold);
}

.chapter-content em {
    font-style: italic;
}

.chapter-content ul {
    margin-bottom: 1.5rem;
    padding-left: 2rem;
}

.chapter-content li {
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.chapter-content hr {
    border: none;
    border-top: 2px solid var(--border-color);
    margin: 3rem 0;
}

.chapter-content a {
    color: var(--logo-gold);
    text-decoration: underline;
    transition: opacity 0.2s;
}

.chapter-content a:hover {
    opacity: 0.8;
}

/* Tabelle */
.chapter-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 2rem 0;
    font-size: 0.9375rem;
}

.chapter-content th,
.chapter-content td {
    padding: 1rem;
    text-align: left;
    border: 1px solid var(--border-color);
}

.chapter-content th {
    background-color: var(--bg-secondary);
    font-weight: 700;
    color: var(--text-primary);
}

.chapter-content td {
    color: var(--text-primary);
}

/* Page Navigation (prev/next) */
.page-navigation {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 2px solid var(--border-color);
}

.nav-btn {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.5rem;
    background-color: var(--bg-secondary);
    border-radius: 8px;
    color: var(--text-primary);
    font-weight: 600;
    transition: transform 0.2s, background-color 0.2s;
    max-width: 45%;
}

.nav-btn:hover {
    background-color: var(--logo-gold);
    color: var(--bg-primary);
    transform: translateX(0);
}

.nav-btn.nav-prev:hover {
    transform: translateX(-4px);
}

.nav-btn.nav-next:hover {
    transform: translateX(4px);
}

.nav-btn svg {
    flex-shrink: 0;
}

/* Back to top */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    padding: 0.75rem 1.5rem;
    background-color: var(--logo-gold);
    color: var(--bg-primary);
    border-radius: 24px;
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    transition: transform 0.2s, opacity 0.2s;
    z-index: 100;
}

.back-to-top:hover {
    transform: translateY(-4px);
}

.back-to-top:active {
    transform: translateY(0);
}

/* Error page */
.error-page {
    text-align: center;
    padding: 4rem 2rem;
}

.error-page h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.error-page p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.btn-primary {
    display: inline-block;
    padding: 1rem 2rem;
    background-color: var(--logo-gold);
    color: var(--bg-primary);
    border-radius: 8px;
    font-weight: 600;
    transition: transform 0.2s;
}

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

/* Responsive */
@media (max-width: 1024px) {
    .page-header h1 {
        font-size: 2.25rem;
    }
    
    .chapter-content h2 {
        font-size: 1.75rem;
    }
    
    .chapter-content h3 {
        font-size: 1.375rem;
    }
}

@media (max-width: 768px) {
    .page-container {
        padding: 1.5rem;
    }
    
    .page-header h1 {
        font-size: 2rem;
    }
    
    .page-header .subtitle {
        font-size: 1.125rem;
    }
    
    .abstract-section {
        padding: 1.5rem;
    }
    
    .chapter-content h2 {
        font-size: 1.5rem;
        margin-top: 2rem;
    }
    
    .chapter-content h3 {
        font-size: 1.25rem;
    }
    
    .chapter-content p,
    .chapter-content li {
        font-size: 1rem;
    }
    
    .index-subsections {
        margin-left: 48px;
    }
    
    .nav-btn {
        padding: 0.875rem 1.25rem;
        font-size: 0.9375rem;
    }
    
    .back-to-top {
        bottom: 1.5rem;
        right: 1.5rem;
        padding: 0.625rem 1.25rem;
        font-size: 0.875rem;
    }
}

@media (max-width: 480px) {
    .page-container {
        padding: 1rem;
    }
    
    .page-header {
        margin-bottom: 2rem;
        padding-bottom: 1.5rem;
    }
    
    .page-header h1 {
        font-size: 1.75rem;
    }
    
    .page-header .subtitle {
        font-size: 1rem;
    }
    
    .breadcrumb {
        font-size: 0.8125rem;
        flex-wrap: wrap;
    }
    
    .abstract-section {
        padding: 1.25rem;
    }
    
    .index-section h2 {
        font-size: 1.75rem;
    }
    
    .index-item {
        padding: 1.25rem;
    }
    
    .index-link {
        font-size: 1rem;
    }
    
    .index-number {
        width: 36px;
        height: 36px;
        font-size: 1.125rem;
    }
    
    .index-subsections {
        margin-left: 44px;
        margin-top: 0.75rem;
    }
    
    .index-subsections a {
        font-size: 0.875rem;
    }
    
    .chapter-content {
        font-size: 0.9375rem;
    }
    
    .chapter-content h2 {
        font-size: 1.375rem;
    }
    
    .chapter-content h3 {
        font-size: 1.125rem;
    }
    
    .page-navigation {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav-btn {
        max-width: 100%;
        width: 100%;
        justify-content: center;
    }
    
    .back-to-top {
        bottom: 1rem;
        right: 1rem;
        padding: 0.5rem 1rem;
        font-size: 0.8125rem;
    }
    
    .chapter-content table {
        font-size: 0.875rem;
    }
    
    .chapter-content th,
    .chapter-content td {
        padding: 0.75rem 0.5rem;
    }
}