/* ========================================
   NordicTimeline - Timeline Styles
   时间轴专用样式（电脑端默认）
   ======================================== */

/* ========================================
   Timeline Container
   ======================================== */

.timeline-container {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-md);
}

.nordic-timeline {
    position: relative;
    padding: var(--spacing-md) 0;
}

/* Center Timeline Line */
.nordic-timeline::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 1px;
    background: linear-gradient(
        to bottom,
        transparent 0%,
        var(--color-gold-muted) 3%,
        var(--color-gold) 15%,
        var(--color-gold) 85%,
        var(--color-gold-muted) 97%,
        transparent 100%
    );
    transform: translateX(-50%);
    z-index: 0;
    opacity: 0.5;
}

/* ========================================
   Timeline Year Marker
   ======================================== */

.timeline-year-marker {
    position: relative;
    z-index: 1;
    text-align: center;
    margin: var(--spacing-xl) 0 var(--spacing-lg);
}

.timeline-year-marker:first-child {
    margin-top: 0;
}

.year-label {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-lg);
    background: var(--color-card);
    border: 1px solid var(--color-gold);
    border-radius: 24px;
    font-family: var(--font-display);
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--color-gold);
    letter-spacing: 2px;
    position: relative;
}

.year-label::before {
    content: '—';
    position: absolute;
    left: -24px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-gold);
    opacity: 0.4;
    font-weight: 300;
}

.year-label::after {
    content: '—';
    position: absolute;
    right: -24px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-gold);
    opacity: 0.4;
    font-weight: 300;
}

/* ========================================
   Timeline Item
   ======================================== */

.timeline-item {
    position: relative;
    display: flex;
    align-items: flex-start;
    margin-bottom: var(--spacing-lg);
    z-index: 1;
}

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

/* ========================================
   Timeline Node (Dot & Line)
   ======================================== */

.timeline-node {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    z-index: 2;
}

.node-dot {
    width: 10px;
    height: 10px;
    background: var(--color-gold);
    border: 2px solid var(--color-card);
    border-radius: 50%;
    box-shadow: 0 0 0 2px var(--color-gold), 0 0 8px rgba(74, 141, 183, 0.3);
    flex-shrink: 0;
}

.node-line {
    width: 1px;
    height: 20px;
    background: var(--color-gold);
    margin-top: 4px;
    opacity: 0.3;
}

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

/* ========================================
   Timeline Date
   ======================================== */

.timeline-date {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    margin-top: 28px;
    text-align: center;
}

.date-month-day {
    display: inline-block;
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 400;
    color: var(--color-gold);
    background: var(--color-card);
    padding: 2px 10px;
    border-radius: 12px;
    white-space: nowrap;
    border: 1px solid var(--color-gold-muted);
    letter-spacing: 0.5px;
}

/* ========================================
   Timeline Content Card
   ======================================== */

.timeline-content {
    width: calc(50% - 40px);
    position: relative;
}

/* Left side items */
.timeline-item:nth-child(odd) .timeline-content {
    margin-right: auto;
    margin-left: 0;
    text-align: right;
}

.timeline-item:nth-child(odd) .timeline-content .diary-card,
.timeline-item:nth-child(odd) .timeline-content .quote-card,
.timeline-item:nth-child(odd) .timeline-content .locked-card {
    text-align: left;
}

/* Right side items */
.timeline-item:nth-child(even) .timeline-content {
    margin-left: auto;
    margin-right: 0;
}

/* Card footer alignment for left items */
.timeline-item:nth-child(odd) .timeline-content .card-footer {
    flex-direction: row-reverse;
}

.timeline-item:nth-child(odd) .timeline-content .card-footer .location-tag {
    margin-right: 0;
    margin-left: auto;
}

/* ========================================
   Timeline Card Variations
   ======================================== */

/* Quote card in timeline */
.timeline-content .quote-card {
    padding: var(--spacing-lg);
}

.timeline-content .quote-content {
    font-size: 1.125rem;
}

.timeline-content .quote-decoration {
    font-size: 2rem;
}

/* Locked card in timeline */
.timeline-content .locked-card {
    padding: var(--spacing-lg);
}

.timeline-content .lock-icon {
    width: 48px;
    height: 48px;
}

.timeline-content .lock-icon i {
    font-size: 1.25rem;
}

/* ========================================
   Timeline Load More
   ======================================== */

.timeline-container .load-more-section {
    position: relative;
    z-index: 1;
}

/* ========================================
   Animation Effects
   ======================================== */

/* 动态效果已禁用 - 保留静态样式 */

/* Hover effects - 已禁用 */
/*
.timeline-item:hover .node-dot {
    transform: scale(1.3);
    box-shadow: 0 0 0 3px var(--color-gold), 0 0 16px rgba(74, 141, 183, 0.4);
}
*/

.timeline-content .diary-card,
.timeline-content .quote-card,
.timeline-content .locked-card {
    transition: all 0.4s var(--ease-out-expo);
}

/* 卡片悬停效果 - 通过父元素触发，与等级标签同步 */
.timeline-content:hover .diary-card,
.timeline-content:hover .quote-card,
.timeline-content:hover .locked-card {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover), 0 0 0 1px var(--color-gold-muted);
}

/* ========================================
   Timeline Empty State
   ======================================== */

.nordic-timeline .no-content {
    position: relative;
    z-index: 1;
    background: var(--color-card);
    border-radius: var(--radius);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    margin: var(--spacing-lg) 0;
}