/* ========== TIMELINE SPECIFIC STYLES ========== */

/* Timeline Hero */
.timeline-hero {
    padding: calc(80px + var(--spacing-xl)) 0 var(--spacing-xl) 0;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    text-align: center;
}

.timeline-hero h1 {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 5vw, 3.5rem);
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.timeline-hero p {
    color: var(--text-secondary);
    font-size: var(--font-size-md);
}

/* Filter Section */
.filter-section {
    background: var(--bg-secondary);
    padding: var(--spacing-lg) 0;
    border-bottom: 1px solid var(--card-border);
}

.filter-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.filter-btn {
    padding: var(--spacing-xs) var(--spacing-lg);
    background: var(--bg-primary);
    color: var(--text-primary);
    border: 2px solid transparent;
    border-radius: 25px;
    font-family: var(--font-body);
    font-weight: 600;
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-btn:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px var(--shadow-accent);
}

.filter-btn.active {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}

.filter-count {
    color: var(--text-secondary);
    font-family: var(--font-body);
    font-size: var(--font-size-sm);
    margin-left: var(--spacing-sm);
}

/* Timeline Section */
.timeline-section {
    background: var(--bg-primary);
    padding: var(--spacing-xxl) 0;
    position: relative;
    overflow: hidden;
    min-height: 600px;
}

.timeline-container {
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* Cards Container */
.cards-viewport {
    position: relative;
    height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-xxl);
}

.cards-container {
    position: relative;
    width: 100%;
    max-width: 400px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Timeline Card */
.timeline-card {
    position: absolute;
    width: 100%;
    max-width: 380px;
    height: 480px;
    opacity: 0;
    transform: translateX(30px);
    transition: all 0.3s cubic-bezier(0.23, 1, 0.32, 1);
}

.timeline-card.visible {
    opacity: 1;
    transform: translateX(0);
}

.timeline-card.exit-left {
    opacity: 0;
    transform: translateX(-30px);
}

.timeline-card.exit-right {
    opacity: 0;
    transform: translateX(30px);
}

/* Card Inner */
.card-inner {
    width: 100%;
    height: 100%;
    background: var(--card-bg);
    border-radius: 24px;
    padding: var(--spacing-xl);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    border: 2px solid var(--card-border);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
    transition: all var(--transition-medium);
}

.card-inner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: var(--accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-medium);
}

.card-inner::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(255, 24, 1, 0.1) 0%, transparent 50%);
    opacity: 0;
    transition: opacity var(--transition-medium);
    pointer-events: none;
}

.timeline-card:hover .card-inner {
    transform: translateY(-5px);
    box-shadow: 0 25px 70px rgba(0, 0, 0, 0.4);
    border-color: var(--accent);
}

.timeline-card:hover .card-inner::before {
    transform: scaleX(1);
}

.timeline-card:hover .card-inner::after {
    opacity: 1;
}

.timeline-card:hover .card-year {
    transform: scale(1.05);
}

.timeline-card:hover .card-category-icon {
    transform: rotate(10deg) scale(1.1);
}

/* Card Header */
.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.card-year {
    font-family: var(--font-heading);
    font-size: 3rem;
    color: var(--accent);
    font-weight: 400;
    line-height: 1;
    transition: transform var(--transition-fast);
}

.card-category-icon {
    font-size: 2.5rem;
    opacity: 0.8;
    transition: transform var(--transition-fast);
}

/* Card Content */
.card-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    line-height: 1.3;
}

.card-description {
    font-family: var(--font-body);
    font-size: var(--font-size-md);
    color: var(--text-secondary);
    line-height: 1.7;
    flex-grow: 1;
    margin-bottom: var(--spacing-lg);
}

/* Card Footer */
.card-footer {
    margin-top: auto;
}

.card-category {
    display: inline-block;
    padding: 8px 20px;
    border-radius: 25px;
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: white;
}

.card-category.championship {
    background: #FFD700;
    color: #1a1a2e;
}

.card-category.innovation {
    background: #00CED1;
    color: #1a1a2e;
}

.card-category.milestone {
    background: var(--accent);
}

.card-category.tragedy {
    background: #DC143C;
}

/* Navigation Buttons */
.timeline-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--bg-secondary);
    border: 3px solid var(--accent);
    color: var(--accent);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
}

.timeline-nav:hover:not(:disabled) {
    background: var(--accent);
    color: white;
    transform: translateY(-50%) scale(1.1);
    box-shadow: 0 5px 25px var(--shadow-accent);
}

.timeline-nav:disabled {
    cursor: not-allowed;
    opacity: 0.3;
}

.timeline-nav.prev {
    left: 20px;
}

.timeline-nav.next {
    right: 20px;
}

/* Progress Bar */
.timeline-progress {
    position: relative;
    margin: 80px auto 0;
    width: 90%;
    max-width: 800px;
    height: 8px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    overflow: visible;
    cursor: pointer;
    transition: all var(--transition-fast);
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
}

.timeline-progress:hover {
    height: 12px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.progress-bar {
    height: 100%;
    background: var(--accent);
    transition: width 0.3s cubic-bezier(0.23, 1, 0.32, 1);
    width: 0%;
    border-radius: 4px;
    position: relative;
}

.progress-bar::after {
    content: '';
    position: absolute;
    right: -8px;
    top: 50%;
    transform: translateY(-50%);
    width: 16px;
    height: 16px;
    background: white;
    border: 3px solid var(--accent);
    border-radius: 50%;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.progress-years {
    position: absolute;
    top: 20px;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-between;
    font-family: var(--font-body);
    font-size: 0.875rem;
    color: var(--text-secondary);
    /* Rimosso per evitare duplicazione */
    display: none;
}

.current-year-display {
    position: absolute;
    bottom: 100%;
    margin-bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    font-family: var(--font-heading);
    font-size: 2rem;
    color: var(--text-primary);
    background: var(--bg-primary);
    padding: 0 var(--spacing-md);
    white-space: nowrap;
    z-index: 10;
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
}

/* Timeline Markers */
.timeline-markers {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100%;
}

.decade-marker {
    position: absolute;
    top: 100%;
    margin-top: 15px;
    transform: translateX(-50%);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.decade-marker span {
    display: block;
    font-family: var(--font-body);
    font-size: 0.75rem;
    color: var(--text-secondary);
    background: var(--bg-primary);
    padding: 2px 8px;
    border-radius: 12px;
    white-space: nowrap;
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
}

.decade-marker:hover span {
    color: var(--accent);
    transform: scale(1.1);
}

.decade-marker::after {
    content: '';
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 1px;
    height: 10px;
    background: rgba(255, 255, 255, 0.2);
}

/* Quick Jump Section */
.quick-jump {
    padding: var(--spacing-xl) 0;
    background: var(--bg-secondary);
    text-align: center;
}

.quick-jump h3 {
    font-family: var(--font-heading);
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.jump-buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.jump-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--bg-primary);
    color: var(--text-primary);
    border: 2px solid transparent;
    border-radius: 25px;
    font-family: var(--font-body);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.jump-btn:hover {
    border-color: var(--accent);
    background: var(--accent);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px var(--shadow-accent);
}

/* Active navigation link */
.nav-links a.active {
    color: var(--accent);
}

.nav-links a.active::after {
    width: 100%;
}

/* Light theme adjustments */
[data-theme="light"] .timeline-card .card-inner {
    background: white;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .filter-btn {
    background: white;
}

[data-theme="light"] .timeline-nav {
    background: white;
}

[data-theme="light"] .jump-btn {
    background: white;
}

[data-theme="light"] .timeline-progress {
    background: rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .current-year-display {
    background: var(--bg-secondary);
}

[data-theme="light"] .decade-marker span {
    background: var(--bg-secondary);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.timeline-section.loaded .timeline-card {
    animation: fadeInUp 0.6s ease forwards;
}

/* Responsive */
@media (max-width: 768px) {
    .timeline-hero h1 {
        font-size: 2rem;
    }
    
    .filter-wrapper {
        padding: 0 var(--spacing-md);
    }
    
    .filter-btn {
        font-size: 0.875rem;
        padding: 6px 16px;
    }
    
    .cards-viewport {
        height: 450px;
        margin-bottom: calc(var(--spacing-xxl) + 20px);
    }
    
    .timeline-card {
        max-width: 320px;
        height: 420px;
    }
    
    .card-inner {
        padding: var(--spacing-lg);
    }
    
    .card-year {
        font-size: 2.5rem;
    }
    
    .card-title {
        font-size: 1.25rem;
    }
    
    .card-description {
        font-size: 0.9rem;
    }
    
    .timeline-nav {
        width: 50px;
        height: 50px;
    }
    
    .timeline-progress {
        width: 95%;
    }
    
    .current-year-display {
        font-size: 1.5rem;
        margin-bottom: 15px;
    }
    
    .decade-marker span {
        font-size: 0.7rem;
        padding: 2px 6px;
    }
    
    .jump-buttons {
        padding: 0 var(--spacing-md);
    }
    
    .jump-btn {
        font-size: 0.875rem;
        padding: 8px 16px;
    }
}

@media (max-width: 480px) {
    .cards-viewport {
        height: 400px;
        margin-bottom: calc(var(--spacing-xxl) + 20px);
    }
    
    .timeline-card {
        max-width: 280px;
        height: 380px;
    }
    
    .card-inner {
        padding: var(--spacing-md);
    }
    
    .card-year {
        font-size: 2rem;
    }
    
    .card-category-icon {
        font-size: 2rem;
    }
    
    .card-title {
        font-size: 1.1rem;
    }
    
    .card-description {
        font-size: 0.85rem;
        line-height: 1.6;
    }
    
    .filter-count {
        display: block;
        width: 100%;
        text-align: center;
        margin-top: var(--spacing-xs);
        margin-left: 0;
    }
    
    .timeline-progress:hover {
        height: 8px;
    }
    
    .progress-bar::after {
        width: 12px;
        height: 12px;
        right: -6px;
    }
}