/* ============================================
   Berlin Verkehrs- und Stadtchronik Styles
   ============================================ */

/* Chronik Header */
.chronik-header {
    text-align: center;
    margin-bottom: 2rem;
    border-bottom: 2px solid var(--color-gray-medium);
    padding-bottom: 1.5rem;
}

.chronik-header h1 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    color: var(--color-primary-blue-dark);
    font-weight: 600;
}

.chronik-header .subtitle {
    font-weight: 600;
    color: var(--color-primary-blue);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.chronik-header .period {
    font-style: normal;
    color: var(--color-gray-dark);
    font-size: 1.5rem;
    font-weight: 500;
}

/* Dekaden-Navigation */
.chronik-navigation {
    margin: 1.5rem 0;
}

.decade-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem;
    list-style: none;
    padding: 0;
    margin: 0;
}

.decade-links li {
    margin: 0;
}

.decade-links a {
    display: inline-block;
    color: var(--color-primary-blue);
    font-weight: 500;
    padding: 0.5rem 1rem;
    text-decoration: none;
    transition: all 0.3s ease;
    border-radius: 4px;
}

.decade-links a:hover {
    background-color: var(--color-primary-blue);
    color: var(--color-white);
}

.decade-links strong {
    display: inline-block;
    color: var(--color-black);
    font-weight: 700;
    padding: 0.5rem 1rem;
    background-color: var(--color-gray-light);
    border-radius: 4px;
}

.section-divider {
    border: none;
    border-top: 2px solid var(--color-gray-medium);
    margin: 2rem 0;
}

/* Jahr-Sektionen */
.year-section {
    margin: 3rem 0;
}

.year-header {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--color-primary-blue);
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.year-label {
    font-weight: bold;
}

.back-to-top {
    font-size: 1.5rem;
    color: var(--color-primary-blue);
    text-decoration: none;
    opacity: 0.7;
    transition: opacity 0.3s ease, transform 0.2s ease;
    display: inline-block;
}

.back-to-top:hover {
    opacity: 1;
    transform: translateY(-2px);
}

/* Einträge-Liste */
.entries-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.chronicle-entry {
    margin: 1.5rem 0;
    padding-left: 0;
}

/* Datum-Styling */
.date {
    font-weight: 600;
    display: block;
    margin-bottom: 0.25rem;
    font-size: 1rem;
}

/* Event-Type spezifische Farben */
.date--ubahn {
    color: #0000FF;
}

.date--sbahn {
    color: #00A400;
}

.date--tram {
    color: #FF0000;
}

.date--bus {
    color: #993399;
}

.date--city {
    color: inherit;
}

/* Beschreibungs-Text */
.description {
    margin: 0 0 0.5rem 0;
    line-height: 1.6;
    color: var(--color-white);
}

/* Chronik Footer */
.chronik-footer {
    text-align: center;
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 2px solid var(--color-gray-medium);
}

.chronik-footer p {
    margin: 0.75rem 0;
}

.continuation-link,
.index-link {
    color: #FFCC00;
    font-weight: 600;
    text-decoration: none;
    font-size: 1.1rem;
    transition: color 0.3s ease;
}

.continuation-link:hover,
.index-link:hover {
    color: var(--color-gold-light);
    text-decoration: underline;
}

/* Index-Seite spezifische Styles */
.chronik-intro {
    text-align: center;
    margin-bottom: 3rem;
    padding: 2rem;
    background-color: rgba(26, 84, 144, 0.05);
    border-radius: 8px;
}

.chronik-intro h1 {
    font-size: 2.5rem;
    color: var(--color-primary-blue-dark);
    margin-bottom: 1rem;
}

.chronik-intro p {
    font-size: 1.2rem;
    color: var(--color-gray-dark);
    margin-bottom: 0.5rem;
}

/* Dekaden-Grid auf Index-Seite */
.decades-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.decade-card {
    background: linear-gradient(135deg, var(--color-primary-blue) 0%, var(--color-primary-blue-dark) 100%);
    border-radius: 8px;
    padding: 2rem;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.decade-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}

.decade-card a {
    color: var(--color-white);
    text-decoration: none;
    display: block;
}

.decade-card h2 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
    color: var(--color-white);
}

.decade-card p {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.9);
    margin: 0;
}

/* Farblegende */
.color-legend {
    margin: 3rem 0;
    padding: 2rem;
    background-color: rgba(26, 84, 144, 0.05);
    border-radius: 8px;
}

.color-legend h2 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--color-primary-blue-dark);
    text-align: center;
}

.legend-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    list-style: none;
    padding: 0;
    margin: 0;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    background-color: var(--color-white);
    border-radius: 4px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.legend-color {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    flex-shrink: 0;
}

.legend-color--ubahn {
    background-color: #0000FF;
}

.legend-color--sbahn {
    background-color: #00A400;
}

.legend-color--tram {
    background-color: #FF0000;
}

.legend-color--bus {
    background-color: #993399;
}

.legend-color--city {
    background-color: #1d1d1f;
}

.legend-text {
    font-size: 0.95rem;
    color: var(--color-black);
    font-weight: 500;
}

/* Responsive Anpassungen */
@media (max-width: 768px) {
    .chronik-header h1 {
        font-size: 1.5rem;
    }

    .chronik-header .period {
        font-size: 1.2rem;
    }

    .year-header {
        font-size: 1.3rem;
    }

    .decade-links {
        gap: 0.25rem;
    }

    .decade-links a,
    .decade-links strong {
        padding: 0.4rem 0.7rem;
        font-size: 0.9rem;
    }

    .decades-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .decade-card {
        padding: 1.5rem;
    }

    .legend-list {
        grid-template-columns: 1fr;
    }

    .chronik-intro h1 {
        font-size: 1.8rem;
    }

    .chronik-intro p {
        font-size: 1rem;
    }
}

@media (min-width: 769px) and (max-width: 1024px) {
    .decades-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Druck-Styles */
@media print {
    .chronik-navigation,
    .back-to-top,
    .chronik-footer {
        display: none;
    }

    .year-section {
        page-break-inside: avoid;
    }

    .chronicle-entry {
        page-break-inside: avoid;
    }
}