/* lib/styles/components/timeline_node.css */

.timeline-node {
    position: relative;
    display: flex;
    align-items: stretch;
    gap: var(--space-lg);
    transition: transform var(--transition-fast);
    min-width: 0;
    height: 100%;
}

.timeline-node__indicator-column {
    display: flex;
    flex-direction: column;
    align-items: center;
    flex-shrink: 0;
    position: relative;
    z-index: 2;
}

.timeline-node__circle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background:
        linear-gradient(180deg, var(--color-justice-blue) 0%, #274c79 100%);
    color: var(--color-white);
    border: 3px solid rgba(247, 247, 245, 0.95);
    font-family: var(--font-heading);
    font-size: var(--fs-small);
    font-weight: var(--fw-bold);
    line-height: 1;
    box-shadow:
        0 8px 20px rgba(16, 32, 48, 0.14),
        0 0 0 1px rgba(16, 32, 48, 0.06);
    transition:
        background-color var(--transition-fast),
        transform var(--transition-fast),
        border-color var(--transition-fast),
        box-shadow var(--transition-fast);
    will-change: transform, background-color, box-shadow;
}

.timeline-node__line {
    width: 2px;
    background:
        linear-gradient(180deg, rgba(29, 118, 112, 0.20) 0%, rgba(16, 32, 48, 0.10) 100%);
    flex-grow: 1;
    min-height: 72px;
    margin-top: var(--space-sm);
    margin-bottom: 0;
    transform-origin: top;
}

.timeline-node__content-column {
    position: relative;
    flex-grow: 1;
    min-width: 0;
    height: 100%;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.98) 0%, rgba(247, 247, 245, 1) 100%);
    border: 1px solid rgba(16, 32, 48, 0.08);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-card);
    transition:
        transform var(--transition-normal),
        box-shadow var(--transition-normal),
        border-color var(--transition-fast),
        background-color var(--transition-fast);
    display: flex;
    flex-direction: column;
}

.timeline-node__content-column::before {
    content: '';
    position: absolute;
    inset: 0 auto auto 0;
    width: 100%;
    height: 3px;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    background: linear-gradient(90deg, rgba(29, 118, 112, 0.34), rgba(29, 118, 112, 0.08));
}

.timeline-node__step-label {
    display: inline-block;
    margin-bottom: var(--space-sm);
    font-family: var(--font-heading);
    font-size: var(--fs-label);
    font-weight: var(--fw-bold);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-support-gold);
}

.timeline-node__title {
    color: var(--color-justice-blue);
    font-size: var(--fs-h4);
    margin: 0 0 var(--space-sm);
    line-height: var(--lh-heading-3);
    transition: color var(--transition-fast);
}

.timeline-node__description {
    color: var(--color-neutral-navy);
    font-size: var(--fs-body);
    line-height: 1.65;
    margin-bottom: 0;
    max-width: 56ch;
}

.timeline-node:hover .timeline-node__circle {
    transform: scale(1.04);
    background: linear-gradient(180deg, var(--color-guidance-teal) 0%, #166660 100%);
    border-color: rgba(247, 247, 245, 1);
    box-shadow:
        0 10px 24px rgba(29, 118, 112, 0.22),
        0 0 0 1px rgba(16, 32, 48, 0.06);
}

.timeline-node:hover .timeline-node__content-column {
    transform: translateY(-2px);
    box-shadow: var(--shadow-card-hover);
    border-color: rgba(29, 118, 112, 0.18);
}

.timeline-node:hover .timeline-node__title {
    color: var(--color-guidance-teal);
}

.timeline-node:last-child .timeline-node__line {
    display: none;
}

/* =========================================
   Desktop horizontal timeline
   ========================================== */
@media (min-width: 768px) {
    .timeline-container--horizontal {
        display: grid;
        grid-template-columns: repeat(5, minmax(0, 1fr));
        gap: var(--space-lg);
        align-items: stretch;
        position: relative;
    }

    .timeline-container--horizontal .timeline-node {
        flex-direction: column;
        align-items: stretch;
        gap: var(--space-lg);
        min-width: 0;
        height: 100%;
    }

    .timeline-container--horizontal .timeline-node__indicator-column {
        width: 100%;
        min-height: 52px;
        align-items: flex-start;
        justify-content: center;
    }

    .timeline-container--horizontal .timeline-node__line {
        position: absolute;
        left: calc(52px + 12px);
        right: calc(var(--space-lg) * -1);
        top: 26px;
        transform: none;
        transform-origin: left;
        height: 2px;
        width: auto;
        min-height: 0;
        margin: 0;
        background: linear-gradient(90deg, rgba(29, 118, 112, 0.22) 0%, rgba(16, 32, 48, 0.10) 100%);
        z-index: 1;
    }

    .timeline-container--horizontal .timeline-node:last-child .timeline-node__line {
        display: none;
    }

    .timeline-container--horizontal .timeline-node__content-column {
        padding: var(--space-xl);
        min-height: 320px;
        height: 100%;
    }

    .timeline-container--horizontal .timeline-node__description {
        max-width: none;
    }
}

/* =========================================
   Mobile refinements
   ========================================== */
@media (max-width: 767px) {
    .timeline-node {
        gap: var(--space-md);
    }

    .timeline-node__circle {
        width: 44px;
        height: 44px;
        border-width: 2px;
    }

    .timeline-node__line {
        min-height: 88px;
        margin-top: var(--space-xs);
    }

    .timeline-node__content-column {
        padding: var(--space-lg);
    }

    .timeline-node__description {
        font-size: var(--fs-small);
        line-height: 1.6;
        max-width: 100%;
    }
}

/* Reduced Motion Override */
@media (prefers-reduced-motion: reduce) {
    .timeline-node {
        transition: none;
    }

    .timeline-node__circle,
    .timeline-node__content-column,
    .timeline-node__title {
        transition: none;
    }

    .timeline-node:hover .timeline-node__circle,
    .timeline-node:hover .timeline-node__content-column {
        transform: none;
    }
}