/* ===== 开发日志 ===== */
.devlog-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.devlog-title {
    font-size: 2rem;
    background: linear-gradient(135deg, var(--text-primary), var(--text-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.timeline {
    position: relative;
    padding-left: var(--spacing-xxl);
}

.timeline::before {
    content: '';
    position: absolute;
    left: 12px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--text-primary), var(--text-secondary));
}

.timeline-item {
    position: relative;
    margin-bottom: var(--spacing-xl);
    animation: fadeIn 0.5s ease-in;
}

.timeline-dot {
    position: absolute;
    left: calc(-1 * var(--spacing-xxl) + 4px);
    top: var(--spacing-md);
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--text-primary);
    border: 3px solid var(--bg-primary);
    box-shadow: 0 0 0 3px var(--text-secondary);
}

.timeline-card {
    padding: var(--spacing-lg);
}

.timeline-date {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.timeline-version {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: linear-gradient(135deg, var(--text-primary), var(--text-secondary));
    color: white;
    border-radius: var(--border-radius-sm);
    font-size: 0.8rem;
    font-weight: bold;
}

.timeline-item-title {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.timeline-content {
    color: var(--text-primary);
    line-height: 1.8;
    max-height: 200px;
    overflow: hidden;
    position: relative;
}

.timeline-content.expanded {
    max-height: none;
}

.timeline-content::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 40px;
    background: linear-gradient(transparent, var(--glass-bg));
}

.timeline-content.expanded::after {
    display: none;
}

.timeline-toggle {
    display: inline-block;
    color: var(--text-secondary);
    cursor: pointer;
    font-weight: 600;
    margin-top: var(--spacing-sm);
}

.timeline-toggle:hover {
    text-decoration: underline;
}

.timeline-progress {
    margin-top: var(--spacing-md);
}

.progress-label {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--spacing-xs);
    font-size: 0.9rem;
}

.progress-bar {
    height: 8px;
    background: var(--bg-secondary);
    border-radius: var(--border-radius-round);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--text-primary), var(--text-secondary));
    border-radius: var(--border-radius-round);
    transition: width 0.5s ease;
}

.timeline-tags {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
    flex-wrap: wrap;
}

.tag {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--bg-secondary);
    border-radius: var(--border-radius-sm);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.load-more-btn {
    display: block;
    width: 100%;
    max-width: 300px;
    margin: var(--spacing-xl) auto 0;
    text-align: center;
}

.loading-indicator {
    text-align: center;
    padding: var(--spacing-lg);
    color: var(--text-secondary);
}

.devlog-empty {
    text-align: center;
    padding: var(--spacing-xxl);
    color: var(--text-secondary);
}

.devlog-empty-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
}

/* ===== 首页开发日志区域响应式 ===== */
@media screen and (max-width: 767px) {
    .devlog-section {
        min-height: auto;
    }
}

@media screen and (min-width: 768px) and (max-width: 1024px) {
    .devlog-section {
        grid-column: 1 / -1;
    }
}

@media screen and (min-width: 1025px) {
    .devlog-section {
        grid-column: 1 / -1;
    }
}