/*
 * Timeline Component
 * Vertical timeline with markers, content, and variant styles
 */

/* Timeline Container */
.timeline {
    --timeline-marker-size: 32px;
    --timeline-dot-size: 8px;
    --timeline-line-offset: 16px;
    --timeline-item-padding: 48px;
    --timeline-icon-size: 16px;

    position: relative;
    padding: 0;
    margin: 0;
}

/* Timeline Item */
.timeline-item {
    position: relative;
    padding-left: var(--timeline-item-padding);
    padding-bottom: 2rem;
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-item:last-child::before {
    display: none;
}

/* Vertical Line */
.timeline-item::before {
    content: "";
    position: absolute;
    left: var(--timeline-line-offset);
    top: var(--timeline-marker-size);
    bottom: 0;
    width: 2px;
    background: var(--theme-border);
}

/* Timeline Marker */
.timeline-marker {
    position: absolute;
    left: 0;
    top: 0;
    width: var(--timeline-marker-size);
    height: var(--timeline-marker-size);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1;
}

.timeline-marker-dot {
    width: var(--timeline-marker-size);
    height: var(--timeline-marker-size);
    border-radius: 50%;
    background: var(--theme-surface);
    border: 2px solid var(--theme-border);
    display: flex;
    align-items: center;
    justify-content: center;
}

.timeline-marker-icon {
    width: var(--timeline-marker-size);
    height: var(--timeline-marker-size);
    border-radius: 50%;
    background: var(--theme-bg);
    border: 2px solid var(--theme-accent);
    display: flex;
    align-items: center;
    justify-content: center;
}

.timeline-marker-icon svg,
.timeline-marker-icon img {
    width: var(--timeline-icon-size);
    height: var(--timeline-icon-size);
    color: var(--theme-accent);
}

/* Timeline Dot (inside marker) */
.timeline-dot {
    width: var(--timeline-dot-size);
    height: var(--timeline-dot-size);
    border-radius: 50%;
    background: var(--theme-text-secondary);
}

/* Timeline Content */
.timeline-content {
    padding-left: 0.5rem;
}

.timeline-time {
    font-size: 0.875rem;
    color: var(--theme-text-tertiary);
    margin-bottom: 0.25rem;
    display: block;
}

.timeline-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--theme-text-primary);
    margin-bottom: 0.5rem;
}

.timeline-description {
    font-size: 0.875rem;
    color: var(--theme-text-secondary);
    line-height: 1.6;
    margin-bottom: 0;
}

/* Timeline Variants */

/* Alternate Layout */
.timeline-alternate {
    max-width: 800px;
    margin: 0 auto;
}

.timeline-alternate .timeline-item {
    padding-bottom: 3rem;
}

.timeline-alternate .timeline-item::before {
    left: 50%;
    transform: translateX(-50%);
}

.timeline-alternate .timeline-marker {
    left: 50%;
    transform: translateX(-50%);
}

.timeline-alternate .timeline-item:nth-child(odd) .timeline-content {
    text-align: right;
    padding-right: calc(50% + var(--timeline-item-padding));
    padding-left: 0;
}

.timeline-alternate .timeline-item:nth-child(even) .timeline-content {
    text-align: left;
    padding-left: calc(50% + var(--timeline-item-padding));
    padding-right: 0;
}

/* Centered Layout */
.timeline-centered {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.timeline-centered .timeline-item {
    padding-left: 0;
}

.timeline-centered .timeline-item::before {
    left: 50%;
    transform: translateX(-50%);
}

.timeline-centered .timeline-marker {
    left: 50%;
    transform: translateX(-50%);
}

.timeline-centered .timeline-content {
    padding-left: 0;
    margin-top: calc(var(--timeline-marker-size) + 0.5rem);
}

/* Color Variants */
.timeline-success .timeline-marker {
    border-color: var(--color-success);
}

.timeline-success .timeline-marker-dot .timeline-dot {
    background: var(--color-success);
}

.timeline-success .timeline-marker-icon {
    border-color: var(--color-success);
}

.timeline-success .timeline-marker-icon svg,
.timeline-success .timeline-marker-icon img {
    color: var(--color-success);
}

.timeline-warning .timeline-marker {
    border-color: var(--color-warning);
}

.timeline-warning .timeline-marker-dot .timeline-dot {
    background: var(--color-warning);
}

.timeline-warning .timeline-marker-icon {
    border-color: var(--color-warning);
}

.timeline-warning .timeline-marker-icon svg,
.timeline-warning .timeline-marker-icon img {
    color: var(--color-warning);
}

.timeline-error .timeline-marker {
    border-color: var(--color-error);
}

.timeline-error .timeline-marker-dot .timeline-dot {
    background: var(--color-error);
}

.timeline-error .timeline-marker-icon {
    border-color: var(--color-error);
}

.timeline-error .timeline-marker-icon svg,
.timeline-error .timeline-marker-icon img {
    color: var(--color-error);
}

.timeline-info .timeline-marker {
    border-color: var(--color-info);
}

.timeline-info .timeline-marker-dot .timeline-dot {
    background: var(--color-info);
}

.timeline-info .timeline-marker-icon {
    border-color: var(--color-info);
}

.timeline-info .timeline-marker-icon svg,
.timeline-info .timeline-marker-icon img {
    color: var(--color-info);
}

/* Compact Variant */
.timeline-compact .timeline-item {
    padding-bottom: 1rem;
}

.timeline-compact .timeline-content {
    padding-left: 0.25rem;
}

.timeline-compact .timeline-title {
    font-size: 0.875rem;
}

.timeline-compact .timeline-description {
    font-size: 0.8125rem;
}

/* Responsive */
@media (max-width: 768px) {
    .timeline {
        --timeline-marker-size: 24px;
        --timeline-dot-size: 6px;
        --timeline-line-offset: 12px;
        --timeline-item-padding: 36px;
        --timeline-icon-size: 12px;
    }

    /* Alternate layout becomes left-aligned on mobile */
    .timeline-alternate .timeline-item:nth-child(odd) .timeline-content,
    .timeline-alternate .timeline-item:nth-child(even) .timeline-content {
        text-align: left;
        padding-right: 0;
        padding-left: var(--timeline-item-padding);
    }

    .timeline-alternate .timeline-item::before {
        left: var(--timeline-line-offset);
        transform: none;
    }

    .timeline-alternate .timeline-marker {
        left: 0;
        transform: none;
    }

    .timeline-alternate .timeline-item {
        padding-left: var(--timeline-item-padding);
    }
}