/* ===================================
   TIMELINE - PhilaBag Design System
   Inspired by vertical timeline scroll
   =================================== */

.timeline-section {
    padding: var(--spacing-xl) 0;
    background-color: var(--off-white);
    overflow: hidden;
}

.timeline-list {
    list-style: none;
    position: relative;
    margin: 50px auto;
    padding: 0;
    max-width: 900px;
}

/* Center vertical line */
.timeline-list::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 3px;
    height: 100%;
    margin-left: -1.5px;
    background: linear-gradient(to bottom, var(--forest-green), var(--sage-green));
    border-radius: 2px;
}

/* Year badges */
.timeline-badge-year {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--forest-green);
    color: var(--light-text);
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 700;
    padding: 0.5rem 1.5rem;
    border-radius: 50px;
    z-index: 5;
    box-shadow: var(--shadow-md);
    letter-spacing: 1px;
}

.timeline-year {
    display: block;
}

.timeline-movement-top {
    height: 60px;
    margin-bottom: 2rem;
}

/* Timeline item dots on the line */
.timeline-badge.center-left,
.timeline-badge.center-right {
    position: absolute;
    top: 50%;
    width: 20px;
    height: 20px;
    background-color: var(--forest-green);
    border: 3px solid var(--off-white);
    border-radius: 50%;
    z-index: 6;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-smooth);
}

.timeline-badge.center-left {
    left: 50%;
    margin-left: -10px;
}

.timeline-badge.center-right {
    left: 50%;
    margin-left: -10px;
}

.timeline-movement:hover .timeline-badge.center-left,
.timeline-movement:hover .timeline-badge.center-right {
    background-color: var(--sage-green);
    transform: scale(1.2);
}

/* Timeline movement / item */
.timeline-movement {
    position: relative;
    margin-bottom: 4rem;
}

.timeline-movement:last-child {
    margin-bottom: 2rem;
}

.timeline-item {
    position: relative;
}

/* Panels - alternating left/right */
.timeline-panel {
    width: calc(50% - 40px);
    padding: 0;
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    background-color: var(--cream);
    border: 1px solid rgba(45, 82, 69, 0.15);
    transition: all var(--transition-smooth);
}

.timeline-panel:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.timeline-panel-left {
    float: left;
    text-align: right;
}

.timeline-panel-right {
    float: right;
    text-align: left;
}

.timeline-panel-content {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.timeline-img-wrap {
    width: 100%;
    height: 200px;
    overflow: hidden;
    background-color: var(--warm-beige);
}

.timeline-img-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-smooth);
}

.timeline-panel:hover .timeline-img-wrap img {
    transform: scale(1.05);
}

.timeline-text-wrap {
    padding: var(--spacing-md);
}

.timeline-title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--forest-green);
    margin-bottom: 0.25rem;
    letter-spacing: 0.5px;
}

.timeline-date {
    font-size: 0.85rem;
    color: var(--sage-green);
    font-weight: 600;
    font-style: italic;
    margin-bottom: 0.5rem;
    display: block;
}

.timeline-text-wrap p {
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--dark-text);
    margin: 0;
}

/* Clearfix for alternating layout */
.timeline-movement::after {
    content: '';
    display: table;
    clear: both;
}

/* Scroll animation - hidden until in view */
.timeline-movement.anim {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.timeline-movement.anim.animated {
    opacity: 1;
    transform: translateY(0);
}

/* ===================================
   RESPONSIVE - Mobile
   =================================== */
@media (max-width: 768px) {
    .timeline-list::before {
        left: 20px;
        margin-left: 0;
    }

    .timeline-badge-year {
        left: 20px;
        transform: none;
    }

    .timeline-badge.center-left,
    .timeline-badge.center-right {
        left: 20px;
        margin-left: 0;
    }

    .timeline-panel,
    .timeline-panel-left,
    .timeline-panel-right {
        width: calc(100% - 50px);
        float: none;
        margin-left: 50px;
        text-align: left;
    }

    .timeline-img-wrap {
        height: 180px;
    }
}