/* ========== 西方古典音乐栏目专用样式 ========== */
/* 版本: 1.0.0 | 栏目: 西方古典音乐 | 作者: 芦笛 */

/* ===== 页面头部 ===== */
.western-header {
    position: relative;
    min-height: 65vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #2D3E50, #4A5D6B, #3D4D5D, #1E2A36);
    background-size: 400% 400%;
    animation: gradient-shift 15s ease infinite;
    overflow: hidden;
}

.western-header::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='80' height='80' viewBox='0 0 80 80' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.02'%3E%3Cpath d='M40 40c0-11.046-8.954-20-20-20s-20 8.954-20 20 8.954 20 20 20 20-8.954 20-20zm0 0c0 11.046 8.954 20 20 20s20-8.954 20-20-8.954-20-20-20-20 8.954-20 20z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    pointer-events: none;
}

.western-header::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 100px;
    background: var(--color-cream);
    clip-path: ellipse(70% 100% at 50% 100%);
}

.western-header-tag {
    font-size: 0.75rem;
    letter-spacing: 6px;
    text-transform: uppercase;
    color: rgba(255,255,255,0.5);
    margin-bottom: var(--space-sm);
    font-weight: 300;
}

/* ===== 历史时期时间线 ===== */
.periods-section {
    padding: var(--space-2xl) var(--space-md);
    background: white;
}

.periods-container {
    max-width: 1200px;
    margin: 0 auto;
}

.timeline-wrapper {
    margin: var(--space-xl) 0;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.timeline-wrapper canvas {
    width: 100%;
    max-width: 1200px;
    height: auto;
    display: block;
    margin: 0 auto;
}

.periods-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
    margin-top: var(--space-xl);
}

@media (max-width: 968px) {
    .periods-grid {
        grid-template-columns: 1fr;
    }
}

.period-card {
    background: var(--color-cream);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid rgba(30, 30, 36, 0.04);
    transition: var(--transition-normal);
    position: relative;
}

.period-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.period-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-music-light));
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition-normal);
}

.period-card:hover::before {
    transform: scaleX(1);
}

.period-card-header {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-lg) 0;
}

.period-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    color: white;
    flex-shrink: 0;
    font-family: var(--font-display);
    font-weight: 700;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.period-meta {
    flex: 1;
}

.period-name {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-dark);
    letter-spacing: 2px;
}

.period-range {
    font-size: 0.8rem;
    color: var(--color-warm-gray);
    margin-top: 2px;
    font-weight: 300;
    letter-spacing: 1px;
}

.period-card-body {
    padding: var(--space-sm) var(--space-lg) var(--space-lg);
}

.period-desc {
    font-size: 0.9rem;
    color: var(--color-warm-gray);
    line-height: 1.9;
    margin-bottom: var(--space-md);
    font-weight: 300;
}

.period-highlights {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: var(--space-md);
}

.highlight-item {
    display: flex;
    gap: var(--space-sm);
    align-items: flex-start;
}

.highlight-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-primary);
    background: rgba(44, 62, 80, 0.06);
    padding: 2px 10px;
    border-radius: var(--radius-full);
    white-space: nowrap;
    flex-shrink: 0;
}

.highlight-value {
    font-size: 0.82rem;
    color: var(--color-warm-gray);
    line-height: 1.6;
    font-weight: 300;
    padding-top: 2px;
}

.period-composers {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.composer-tag {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(91, 123, 122, 0.08);
    color: var(--color-music-primary);
    font-size: 0.75rem;
    border-radius: var(--radius-full);
    font-weight: 500;
    transition: var(--transition-fast);
}

.composer-tag:hover {
    background: var(--color-music-primary);
    color: white;
}

/* ===== 作曲家区域 ===== */
.composers-section {
    padding: var(--space-2xl) var(--space-md);
    background: linear-gradient(180deg, var(--color-cream) 0%, white 50%, var(--color-cream) 100%);
}

.composers-container {
    max-width: 1200px;
    margin: 0 auto;
}

.composers-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

@media (max-width: 968px) {
    .composers-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .composers-grid {
        grid-template-columns: 1fr;
    }
}

.composer-card {
    perspective: 1000px;
    height: 320px;
    cursor: pointer;
}

.composer-card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    transform-style: preserve-3d;
}

.composer-card:hover .composer-card-inner {
    transform: rotateY(180deg);
}

.composer-front, .composer-back {
    position: absolute;
    inset: 0;
    backface-visibility: hidden;
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: white;
    border: 1px solid rgba(30, 30, 36, 0.04);
    box-shadow: var(--shadow-sm);
}

.composer-back {
    transform: rotateY(180deg);
    background: var(--color-dark);
    color: white;
    justify-content: flex-start;
    padding-top: var(--space-xl);
}

.composer-avatar {
    width: 72px;
    height: 72px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-sm);
    box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}

.composer-initial {
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 700;
    color: white;
}

.composer-name {
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-dark);
    letter-spacing: 1px;
    line-height: 1.4;
}

.composer-name-en {
    font-size: 0.7rem;
    color: var(--color-warm-gray);
    margin-top: 4px;
    letter-spacing: 0.5px;
}

.composer-years {
    font-size: 0.8rem;
    color: var(--color-warm-gray);
    margin: var(--space-xs) 0;
    font-weight: 300;
}

.composer-period-tag {
    display: inline-block;
    padding: 3px 12px;
    border-radius: var(--radius-full);
    font-size: 0.7rem;
    font-weight: 500;
    margin-top: var(--space-xs);
}

.baroque-tag { background: rgba(139, 105, 20, 0.1); color: #8B6914; }
.classical-tag { background: rgba(74, 124, 143, 0.1); color: #4A7C8F; }
.romantic-tag { background: rgba(139, 69, 87, 0.1); color: #8B4557; }
.modern-tag { background: rgba(90, 107, 138, 0.1); color: #5A6B8A; }

.composer-back-title {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
    letter-spacing: 2px;
}

.composer-back-desc {
    font-size: 0.85rem;
    line-height: 1.8;
    opacity: 0.8;
    font-weight: 300;
    margin-bottom: var(--space-md);
}

.composer-works {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    justify-content: center;
}

.work-tag {
    display: inline-block;
    padding: 3px 10px;
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.15);
    color: rgba(255,255,255,0.85);
    font-size: 0.72rem;
    border-radius: var(--radius-full);
    font-weight: 300;
}

/* ===== 管弦乐队区域 ===== */
.orchestra-section {
    padding: var(--space-2xl) var(--space-md);
    background: white;
}

.orchestra-container {
    max-width: 1200px;
    margin: 0 auto;
}

.orchestra-layout {
    margin: var(--space-xl) 0;
    text-align: center;
}

.orchestra-layout canvas {
    width: 100%;
    max-width: 900px;
    height: auto;
    display: block;
    margin: 0 auto;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, #F5F3EF, #EDEAE3);
}

.orchestra-legend {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
    margin-top: var(--space-md);
    flex-wrap: wrap;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
}

.legend-dot {
    width: 12px;
    height: 12px;
    border-radius: var(--radius-full);
}

.legend-text {
    font-size: 0.85rem;
    color: var(--color-warm-gray);
    font-weight: 500;
}

.instrument-families {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
    margin-top: var(--space-xl);
}

@media (max-width: 1024px) {
    .instrument-families {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .instrument-families {
        grid-template-columns: 1fr;
    }
}

.family-card {
    background: var(--color-cream);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    border: 1px solid rgba(30, 30, 36, 0.04);
    transition: var(--transition-normal);
}

.family-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.family-header {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
}

.family-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    color: white;
    font-family: var(--font-display);
    font-weight: 700;
    flex-shrink: 0;
}

.family-name {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-dark);
    letter-spacing: 1px;
}

.family-name-en {
    font-size: 0.7rem;
    color: var(--color-warm-gray);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.family-desc {
    font-size: 0.85rem;
    color: var(--color-warm-gray);
    line-height: 1.8;
    margin-bottom: var(--space-sm);
    font-weight: 300;
}

.family-instruments {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
}

.inst-tag {
    display: inline-block;
    padding: 3px 10px;
    background: rgba(196, 167, 125, 0.1);
    color: var(--color-warm-gray);
    font-size: 0.72rem;
    border-radius: var(--radius-full);
    font-weight: 400;
}

/* ===== 乐理区域 ===== */
.theory-section {
    padding: var(--space-2xl) var(--space-md);
    background: linear-gradient(180deg, var(--color-cream) 0%, white 50%, var(--color-cream) 100%);
}

.theory-container {
    max-width: 1200px;
    margin: 0 auto;
}

.theory-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
    margin-top: var(--space-lg);
}

@media (max-width: 968px) {
    .theory-grid {
        grid-template-columns: 1fr;
    }
}

.theory-card {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid rgba(30, 30, 36, 0.04);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
    display: flex;
    flex-direction: column;
}

.theory-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.theory-visual {
    width: 100%;
    aspect-ratio: 16/10;
    background: linear-gradient(135deg, #F5F3EF, #EDEAE3);
    position: relative;
    overflow: hidden;
}

.theory-visual canvas {
    width: 100%;
    height: 100%;
    display: block;
}

.theory-content {
    padding: var(--space-md) var(--space-lg) var(--space-lg);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.theory-title {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: var(--space-xs);
    letter-spacing: 1px;
}

.theory-desc {
    font-size: 0.88rem;
    color: var(--color-warm-gray);
    line-height: 1.9;
    margin-bottom: var(--space-sm);
    font-weight: 300;
    flex: 1;
}

.theory-points {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.theory-point {
    display: inline-block;
    padding: 3px 10px;
    background: rgba(91, 123, 122, 0.08);
    color: var(--color-music-primary);
    font-size: 0.75rem;
    border-radius: var(--radius-full);
    font-weight: 500;
}

/* ===== 必听曲目区域 ===== */
.repertoire-section {
    padding: var(--space-2xl) var(--space-md);
    background: white;
}

.repertoire-container {
    max-width: 1200px;
    margin: 0 auto;
}

.repertoire-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
    margin-top: var(--space-lg);
    min-width: 0;
}

@media (max-width: 1024px) {
    .repertoire-list {
        grid-template-columns: 1fr;
    }
}

.repertoire-category {
    background: var(--color-cream);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    border: 1px solid rgba(30, 30, 36, 0.04);
    min-width: 0;
    overflow: hidden;
}

.repertoire-cat-title {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: var(--space-md);
    letter-spacing: 1px;
}

.cat-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    color: white;
    font-family: var(--font-display);
    font-weight: 700;
    flex-shrink: 0;
}

.repertoire-items {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.repertoire-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 12px;
    background: white;
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
    border: 1px solid transparent;
}

.repertoire-item:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-sm);
    transform: translateX(4px);
}

.rep-number {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-accent);
    width: 28px;
    text-align: center;
    flex-shrink: 0;
}

.rep-info {
    flex: 1;
    min-width: 0;
    overflow: hidden;
}

.rep-name {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-dark);
    line-height: 1.5;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.rep-composer {
    display: block;
    font-size: 0.75rem;
    color: var(--color-warm-gray);
    margin-top: 2px;
    font-weight: 300;
}

.rep-tag {
    font-size: 0.7rem;
    padding: 2px 8px;
    background: rgba(91, 123, 122, 0.08);
    color: var(--color-music-primary);
    border-radius: var(--radius-full);
    white-space: nowrap;
    flex-shrink: 0;
}

/* ===== CTA 区域 ===== */
.western-cta {
    padding: var(--space-2xl) var(--space-md);
    background: linear-gradient(135deg, #2D3E50, #1E2A36, #3D4D5D);
    background-size: 400% 400%;
    animation: gradient-shift 15s ease infinite;
    text-align: center;
    color: white;
    position: relative;
    overflow: hidden;
}

.western-cta::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.015'%3E%3Cpath d='M30 30c0-5.523-4.477-10-10-10s-10 4.477-10 10 4.477 10 10 10 10-4.477 10-10zm0 0c0 5.523 4.477 10 10 10s10-4.477 10-10-4.477-10-10-10-10 4.477-10 10z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

/* ===== 响应式补充 ===== */
@media (max-width: 768px) {
    .composer-card {
        height: 280px;
    }

    .orchestra-legend {
        gap: var(--space-sm);
    }

    .repertoire-item {
        flex-wrap: wrap;
    }

    .rep-tag {
        margin-left: 40px;
    }

    .timeline-wrapper {
        overflow-x: scroll;
    }

    .timeline-wrapper canvas {
        min-width: 800px;
    }

    .repertoire-list {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .composer-card:hover .composer-card-inner {
        transform: none;
    }

    .composer-back {
        display: none;
    }

    .composer-card {
        height: auto;
    }

    .composer-card-inner {
        transform: none !important;
    }

    .composer-front {
        position: relative;
        padding: var(--space-md);
    }
}

/* ===== 动画关键帧补充 ===== */
@keyframes gradient-shift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}