/* ========================================
   SECTION 4: SHOWS - 乐队现场（视频-介绍配对设计）
   ======================================== */
.section-shows {
    background: var(--color-bg-secondary);
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    padding-top: calc(var(--nav-height) + var(--spacing-md));
    position: relative;
    overflow: hidden;
}

/* Shows 装饰 */
.shows-bg-decoration {
    background-image: 
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent 24px,
            rgba(201, 169, 97, 0.08) 24px,
            rgba(201, 169, 97, 0.08) 25px
        ),
        repeating-linear-gradient(
            90deg,
            transparent,
            transparent 24px,
            rgba(201, 169, 97, 0.08) 24px,
            rgba(201, 169, 97, 0.08) 25px
        );
    background-size: 25px 25px;
    opacity: 0.4;
}

.shows-bg-decoration::before {
    content: '';
    position: absolute;
    top: 10%;
    right: -5%;
    width: 500px;
    height: 500px;
    background: radial-gradient(
        circle at center,
        rgba(201, 169, 97, 0.12) 0%,
        rgba(201, 169, 97, 0.06) 30%,
        transparent 70%
    );
    filter: blur(80px);
}

.shows-bg-decoration::after {
    content: '';
    position: absolute;
    bottom: 15%;
    left: -8%;
    width: 450px;
    height: 450px;
    background: radial-gradient(
        circle at center,
        rgba(201, 169, 97, 0.1) 0%,
        transparent 60%
    );
    filter: blur(70px);
}

/* 容器 */
.shows-container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

/* 每个视频-介绍对 - 大屏幕水平排列 */
.band-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: start;
}

/* 视频区域 */
.band-video-section {
    position: sticky;
    top: calc(var(--nav-height) + var(--spacing-md));
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.video-container {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--color-bg-elevated);
    border: var(--border-thin);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}

.video-container:hover {
    box-shadow: var(--shadow-lg);
    border-color: rgba(201, 169, 97, 0.3);
}

.show-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    background: var(--color-bg-elevated);
}

.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.2);
    opacity: 1;
    transition: opacity var(--transition-normal);
    pointer-events: none;
    z-index: 2;
}

.video-container.playing .video-overlay {
    opacity: 0;
    pointer-events: none;
}

.video-play-btn {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-full);
    background: rgba(201, 169, 97, 0.9);
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: var(--color-bg-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-normal);
    pointer-events: all;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(10px);
}

.video-play-btn:hover {
    transform: scale(1.1);
    background: rgba(201, 169, 97, 1);
    box-shadow: 0 6px 30px rgba(201, 169, 97, 0.5);
}

.video-play-btn:active {
    transform: scale(0.95);
}

.video-play-btn span {
    font-size: 2rem;
    margin-left: 4px;
}

.theme-light .video-play-btn {
    background: rgba(166, 124, 61, 0.9);
    border-color: rgba(255, 255, 255, 0.4);
    color: var(--color-bg-primary);
}

.theme-light .video-play-btn:hover {
    background: rgba(166, 124, 61, 1);
    box-shadow: 0 6px 30px rgba(166, 124, 61, 0.4);
}

.video-container.playing .video-play-btn {
    display: none;
}

.video-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.video-title {
    font-size: 1.5rem;
    color: var(--color-text-primary);
    margin: 0;
    font-family: var(--font-serif);
    font-weight: 400;
    line-height: 1.3;
}

.video-desc {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
    margin: 0;
}

/* 介绍内容区域 */
.band-content-section {
    display: grid;
    grid-template-columns: 60px 1fr;
    gap: var(--spacing-lg);
    padding: 0;
    position: relative;
}

.band-timeline-marker {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-top: 0.5rem;
}

.marker-dot {
    width: 12px;
    height: 12px;
    border-radius: var(--radius-full);
    background: var(--color-bg-secondary);
    border: 2px solid var(--color-accent-gold);
    position: relative;
    z-index: 2;
    transition: all var(--transition-normal);
    box-shadow: 0 0 0 rgba(201, 169, 97, 0);
}

.band-item:hover .marker-dot {
    transform: scale(1.3);
    box-shadow: 0 0 12px rgba(201, 169, 97, 0.5);
    background: var(--color-accent-gold);
}

.marker-line {
    position: absolute;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: 1px;
    height: calc(100% + var(--spacing-lg));
    background: linear-gradient(
        to bottom,
        var(--color-accent-gold) 0%,
        rgba(201, 169, 97, 0.3) 50%,
        transparent 100%
    );
    z-index: 1;
}

.band-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    padding-bottom: var(--spacing-lg);
    border-bottom: var(--border-thin);
    transition: border-color var(--transition-normal);
}

.band-item:last-child .band-content {
    border-bottom: none;
    padding-bottom: 0;
}

.band-item:hover .band-content {
    border-color: rgba(201, 169, 97, 0.3);
}

.band-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xs);
}

.band-date {
    font-size: 0.875rem;
    font-weight: 400;
    color: var(--color-accent-gold);
    font-family: var(--font-serif);
    letter-spacing: 0.1em;
    font-style: italic;
}

.band-category {
    font-size: 0.7rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    font-family: var(--font-sans);
    font-weight: 300;
    padding: 0.15rem 0.5rem;
    border: 1px solid var(--color-line);
    border-radius: var(--radius-sm);
    transition: all var(--transition-normal);
}

.band-item:hover .band-category {
    border-color: rgba(201, 169, 97, 0.3);
    color: var(--color-text-secondary);
}

.band-title {
    font-size: 1.5rem;
    color: var(--color-text-primary);
    margin: 0;
    font-family: var(--font-serif);
    font-weight: 400;
    line-height: 1.3;
    transition: color var(--transition-normal);
}

.band-item:hover .band-title {
    color: var(--color-accent-gold);
}

.band-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xs);
}

.band-venue {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    font-family: var(--font-sans);
    letter-spacing: 0.05em;
}

.band-meta-icon {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    opacity: 0.6;
}

.band-desc {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    line-height: 1.8;
    margin-top: var(--spacing-sm);
    max-width: 600px;
}

/* ========================================
   加载更多按钮
   ======================================== */
.load-more-container {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    margin-top: var(--spacing-xl);
    padding: var(--spacing-md) 0;
    position: relative;
    z-index: 1;
}

.load-more-btn {
    min-width: 180px;
    height: 48px;
    padding: 0 var(--spacing-lg);
    border: 1px solid var(--color-line);
    border-radius: var(--radius-md);
    background: var(--color-bg-secondary);
    color: var(--color-text-primary);
    font-size: 0.95rem;
    font-weight: 400;
    letter-spacing: 0.05em;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.load-more-btn::before {
    content: '';
    position: absolute;
    inset: -2px;
    border-radius: var(--radius-md);
    background: radial-gradient(circle, var(--color-accent-gold), transparent);
    opacity: 0;
    transition: opacity var(--transition-fast);
    z-index: -1;
}

.load-more-btn:hover:not(:disabled) {
    border-color: var(--color-accent-gold);
    background: rgba(201, 169, 97, 0.1);
    color: var(--color-text-primary);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.load-more-btn:hover:not(:disabled)::before {
    opacity: 0.15;
}


.load-more-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

/* 加载状态 */
.load-more-btn.loading {
    pointer-events: none;
    opacity: 0.7;
}

.load-more-btn.loading .load-more-text {
    opacity: 0.7;
}

/* 加载动画 */
.load-more-spinner {
    width: 16px;
    height: 16px;
    border: 2px solid var(--color-line);
    border-top-color: var(--color-accent-gold);
    border-radius: var(--radius-full);
    animation: spin 0.8s linear infinite;
    display: none;
    flex-shrink: 0;
}

.load-more-btn.loading .load-more-spinner {
    display: block;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* 没有更多状态 */
.load-more-btn.no-more {
    opacity: 0.4;
    cursor: default;
    pointer-events: none;
}

/* 亮色主题 */
.theme-light .load-more-btn {
    background: var(--color-bg-elevated);
    border-color: var(--color-line);
    color: var(--color-text-primary);
}

.theme-light .load-more-btn:hover:not(:disabled) {
    border-color: var(--color-accent-gold);
    background: rgba(166, 124, 61, 0.15);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.theme-light .load-more-btn.loading .load-more-spinner {
    border-color: var(--color-line);
    border-top-color: var(--color-accent-gold);
}

/* 响应式 */
@media (max-width: 768px) {
    .load-more-btn {
        min-width: 160px;
        height: 44px;
        font-size: 0.9rem;
        padding: 0 var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .load-more-btn {
        min-width: 140px;
        height: 40px;
        font-size: 0.85rem;
        padding: 0 var(--spacing-sm);
    }
}

@media (max-width: 768px) {
    .band-item {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .band-video-section {
        position: static;
    }

    .band-content-section {
        grid-template-columns: 40px 1fr;
        gap: var(--spacing-md);
        padding: 0;
    }

    .video-container {
        border-radius: var(--radius-md);
    }

    .video-play-btn {
        width: 64px;
        height: 64px;
    }

    .video-play-btn span {
        font-size: 1.5rem;
    }

    .video-title {
        font-size: 1.25rem;
    }

    .video-desc {
        font-size: 0.9rem;
    }

    .band-timeline-marker {
        padding-top: 0.3rem;
    }

    .marker-dot {
        width: 10px;
        height: 10px;
    }

    .band-content {
        padding-bottom: var(--spacing-md);
    }

    .band-title {
        font-size: 1.25rem;
    }

    .band-desc {
        font-size: 0.9rem;
        line-height: 1.7;
    }
}