/* ========== 流行与创作栏目专用样式 ========== */
/* 版本: 1.0.0 | 栏目: 音乐-流行与创作 | 作者: 芦笛 */

/* ===== 栏目专属色变量 ===== */
:root {
    --color-pop-primary: #6B8B8A;
    --color-pop-dark: #4A6564;
    --color-pop-light: #8BA5A4;
    --color-pop-accent: #9BB5B4;
    --color-pop-pale: #E8F0EF;
    --color-pop-warm: #9B7F6E;
}

/* ===== 页面头部 ===== */
.pop-header {
    position: relative;
    min-height: 65vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #4A6564, #5B7B7A, #6B8B8A, #3D5A59);
    background-size: 400% 400%;
    animation: gradient-shift 15s ease infinite;
    overflow: hidden;
}

.pop-header::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='0.02'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    pointer-events: none;
}

.pop-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%);
}

.header-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    opacity: 0.25;
}

.page-header-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: white;
    padding: var(--space-xl) var(--space-md) var(--space-lg);
    max-width: 800px;
}

.page-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 900;
    margin-bottom: var(--space-sm);
    letter-spacing: 12px;
    text-shadow: 0 4px 20px rgba(0,0,0,0.3);
}

.page-subtitle {
    font-size: 1rem;
    opacity: 0.75;
    max-width: 600px;
    margin: 0 auto;
    line-height: 2;
    font-weight: 300;
    letter-spacing: 0.5px;
}

.page-header-deco {
    position: absolute;
    width: 200px;
    height: 200px;
    border: 1px solid rgba(139, 165, 164, 0.12);
    border-radius: 50%;
    pointer-events: none;
}

.page-header-deco:nth-child(1) {
    top: 10%;
    left: 5%;
    width: 150px;
    height: 150px;
    animation: spin-slow 60s linear infinite;
}

.page-header-deco:nth-child(2) {
    bottom: 15%;
    right: 8%;
    width: 100px;
    height: 100px;
    animation: spin-slow 45s linear infinite reverse;
}

.page-header-deco:nth-child(3) {
    top: 30%;
    right: 15%;
    width: 60px;
    height: 60px;
    border-color: rgba(139, 165, 164, 0.08);
    animation: spin-slow 30s linear infinite;
}

/* ===== 面包屑 ===== */
.breadcrumb-wrap {
    background: var(--color-cream);
    padding: var(--space-sm) 0;
    border-bottom: 1px solid rgba(30, 30, 36, 0.04);
}

.breadcrumb-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* ===== 通用容器 ===== */
.pop-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* ===== 概览区 ===== */
.pop-overview {
    padding: var(--space-2xl) var(--space-md);
    background: var(--color-cream);
}

.overview-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: center;
    margin-top: var(--space-lg);
}

@media (max-width: 968px) {
    .overview-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
}

.overview-text h2 {
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 2.8vw, 2rem);
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: var(--space-sm);
    letter-spacing: 2px;
    line-height: 1.4;
}

.overview-text p {
    font-size: 0.92rem;
    color: var(--color-warm-gray);
    line-height: 2;
    margin-bottom: var(--space-md);
    font-weight: 300;
}

.overview-quote {
    border-left: 3px solid var(--color-accent);
    padding-left: var(--space-md);
    margin: var(--space-md) 0;
    font-family: var(--font-display);
    font-size: 1.05rem;
    color: var(--color-primary);
    font-style: italic;
    line-height: 1.8;
}

.overview-quote cite {
    display: block;
    margin-top: var(--space-xs);
    font-size: 0.8rem;
    color: var(--color-warm-gray);
    font-style: normal;
}

.overview-visual {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    aspect-ratio: 10/7;
    background: linear-gradient(135deg, #E8F0EF, #D5E0DF);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.overview-visual canvas {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.overview-visual-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--space-md);
    background: linear-gradient(transparent, rgba(30,30,36,0.7));
    color: white;
    font-size: 0.85rem;
    text-align: center;
}

/* ===== 内容区块通用 ===== */
.pop-section {
    padding: var(--space-2xl) var(--space-md);
}

.pop-section:nth-child(even) {
    background: white;
}

.pop-section:nth-child(odd) {
    background: var(--color-cream);
}

/* ===== 内容卡片 ===== */
.content-grid {
    display: grid;
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

.content-grid.two-col {
    grid-template-columns: repeat(2, 1fr);
}

.content-grid.three-col {
    grid-template-columns: repeat(3, 1fr);
}

@media (max-width: 968px) {
    .content-grid.two-col,
    .content-grid.three-col {
        grid-template-columns: 1fr;
    }
}

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

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

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

.card-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--color-pop-light), var(--color-pop-primary));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: white;
    flex-shrink: 0;
    font-family: var(--font-display);
    font-weight: 700;
}

.card-header h3 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-dark);
    letter-spacing: 2px;
}

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

.card-lead {
    font-size: 0.92rem;
    color: var(--color-warm-gray);
    line-height: 1.9;
    margin-bottom: var(--space-md);
    font-weight: 300;
}

.card-body h4 {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-dark);
    margin: var(--space-md) 0 var(--space-xs);
    letter-spacing: 1px;
}

.card-body p {
    font-size: 0.88rem;
    color: var(--color-warm-gray);
    line-height: 1.9;
    margin-bottom: var(--space-sm);
    font-weight: 300;
}

.card-list {
    margin: var(--space-xs) 0 var(--space-sm);
    padding-left: var(--space-md);
}

.card-list li {
    font-size: 0.85rem;
    color: var(--color-warm-gray);
    line-height: 1.9;
    margin-bottom: 4px;
    list-style: disc;
    font-weight: 300;
}

.card-list li strong {
    color: var(--color-dark);
    font-weight: 500;
}

/* ===== 示例框 ===== */
.example-box {
    background: var(--color-pop-pale);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    margin: var(--space-sm) 0;
    border-left: 3px solid var(--color-pop-primary);
}

.example-title {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-pop-dark);
    margin-bottom: var(--space-xs);
}

.example-text {
    font-family: var(--font-display);
    font-size: 0.9rem;
    color: var(--color-dark);
    line-height: 1.8;
    margin-bottom: var(--space-xs);
    font-style: italic;
}

.example-note {
    font-size: 0.8rem;
    color: var(--color-warm-gray);
    line-height: 1.7;
    font-weight: 300;
}

/* ===== Canvas 包装 ===== */
.canvas-wrap {
    background: white;
    border-radius: var(--radius-md);
    padding: var(--space-sm);
    margin: var(--space-sm) 0;
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(30, 30, 36, 0.04);
    text-align: center;
}

.canvas-wrap canvas {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
}

.canvas-caption {
    display: block;
    font-size: 0.75rem;
    color: var(--color-warm-gray);
    margin-top: var(--space-xs);
    font-weight: 300;
}

/* ===== 内容块标题 ===== */
.content-block {
    margin-top: var(--space-lg);
}

.block-title {
    font-family: var(--font-display);
    font-size: clamp(1.3rem, 2.5vw, 1.6rem);
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: var(--space-xs);
    letter-spacing: 2px;
    text-align: center;
}

.block-desc {
    font-size: 0.9rem;
    color: var(--color-warm-gray);
    text-align: center;
    max-width: 600px;
    margin: 0 auto var(--space-lg);
    line-height: 1.8;
    font-weight: 300;
}

/* ===== 和弦进行卡片 ===== */
.progression-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
}

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

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

.progression-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(30, 30, 36, 0.04);
    transition: var(--transition-normal);
    text-align: center;
}

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

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

.progression-sub {
    font-size: 0.78rem;
    color: var(--color-warm-gray);
    margin: 4px 0 var(--space-sm);
    font-weight: 300;
}

.progression-card canvas {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
}

.progression-examples {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    justify-content: center;
    margin-top: var(--space-sm);
}

.ex-tag {
    display: inline-block;
    padding: 3px 10px;
    background: rgba(91, 123, 122, 0.08);
    color: var(--color-pop-primary);
    font-size: 0.72rem;
    border-radius: var(--radius-full);
    font-weight: 500;
}

/* ===== DAW 区域 ===== */
.daw-wrap {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(30, 30, 36, 0.04);
    overflow-x: auto;
}

.daw-wrap canvas {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
}

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

.legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    color: var(--color-warm-gray);
    font-weight: 300;
}

.legend-color {
    width: 14px;
    height: 14px;
    border-radius: 3px;
    display: inline-block;
}

/* ===== DAW 对比 ===== */
.daw-comparison {
    margin-top: var(--space-sm);
}

.daw-item {
    padding: var(--space-sm) 0;
    border-bottom: 1px solid rgba(30, 30, 36, 0.04);
}

.daw-item:last-child {
    border-bottom: none;
}

.daw-name {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-dark);
    letter-spacing: 1px;
    display: inline;
}

.daw-platform {
    display: inline-block;
    margin-left: var(--space-xs);
    padding: 2px 8px;
    background: rgba(91, 123, 122, 0.08);
    color: var(--color-pop-primary);
    font-size: 0.7rem;
    border-radius: var(--radius-full);
    font-weight: 500;
}

.daw-item p {
    font-size: 0.82rem;
    color: var(--color-warm-gray);
    line-height: 1.7;
    margin-top: 4px;
    font-weight: 300;
}

/* ===== 吉他和弦图 ===== */
.chord-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: var(--space-sm);
}

@media (max-width: 1024px) {
    .chord-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 640px) {
    .chord-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.chord-item {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-sm);
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(30, 30, 36, 0.04);
    text-align: center;
    transition: var(--transition-normal);
}

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

.chord-item canvas {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
}

.chord-label {
    display: block;
    font-family: var(--font-mono);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-top: var(--space-xs);
}

.chord-type {
    display: block;
    font-size: 0.72rem;
    color: var(--color-warm-gray);
    font-weight: 300;
}

/* ===== 等级表 ===== */
.level-table {
    margin-top: var(--space-sm);
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid rgba(30, 30, 36, 0.06);
}

.level-row {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 10px var(--space-md);
    border-bottom: 1px solid rgba(30, 30, 36, 0.04);
    font-size: 0.85rem;
    color: var(--color-warm-gray);
    font-weight: 300;
}

.level-row:last-child {
    border-bottom: none;
}

.level-tag {
    display: inline-block;
    padding: 3px 10px;
    background: var(--color-pop-primary);
    color: white;
    font-size: 0.7rem;
    border-radius: var(--radius-full);
    font-weight: 500;
    flex-shrink: 0;
    min-width: 48px;
    text-align: center;
}

/* ===== 创作工具区 ===== */
.tools-category-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

@media (max-width: 768px) {
    .tools-category-grid {
        grid-template-columns: 1fr;
    }
}

.tools-category {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(30, 30, 36, 0.04);
    transition: var(--transition-normal);
}

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

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

.tools-cat-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--color-pop-light), var(--color-pop-primary));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.tools-cat-header h4 {
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--color-dark);
    letter-spacing: 1px;
}

.tools-cat-list {
    list-style: none;
    padding: 0;
}

.tools-cat-list li {
    font-size: 0.85rem;
    color: var(--color-warm-gray);
    line-height: 1.9;
    padding: 6px 0;
    border-bottom: 1px solid rgba(30, 30, 36, 0.03);
    font-weight: 300;
}

.tools-cat-list li:last-child {
    border-bottom: none;
}

.tools-cat-list li strong {
    color: var(--color-dark);
    font-weight: 500;
}

/* ===== 案例分析 ===== */
.case-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
    margin-top: var(--space-lg);
}

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

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

.case-header {
    background: linear-gradient(135deg, var(--color-pop-dark), var(--color-pop-primary));
    padding: var(--space-lg);
    color: white;
}

.case-meta {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-xs);
}

.case-artist {
    font-size: 0.8rem;
    opacity: 0.8;
    font-weight: 300;
}

.case-year {
    font-size: 0.8rem;
    opacity: 0.6;
    font-weight: 300;
}

.case-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 3px;
    margin-bottom: var(--space-xs);
}

.case-tag {
    display: inline-block;
    padding: 3px 12px;
    background: rgba(255,255,255,0.15);
    font-size: 0.75rem;
    border-radius: var(--radius-full);
    font-weight: 300;
}

.case-body {
    padding: var(--space-lg);
}

.case-analysis h4 {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-dark);
    margin: var(--space-md) 0 var(--space-xs);
    letter-spacing: 1px;
}

.case-analysis h4:first-child {
    margin-top: 0;
}

.case-analysis p {
    font-size: 0.88rem;
    color: var(--color-warm-gray);
    line-height: 1.9;
    margin-bottom: var(--space-sm);
    font-weight: 300;
}

.case-analysis strong {
    color: var(--color-pop-dark);
    font-weight: 500;
}

/* ===== CTA ===== */
.pop-cta {
    padding: var(--space-2xl) var(--space-md);
    background: linear-gradient(135deg, var(--color-pop-dark), #2D4544, var(--color-pop-primary));
    background-size: 400% 400%;
    animation: gradient-shift 15s ease infinite;
    text-align: center;
    color: white;
    position: relative;
    overflow: hidden;
}

.pop-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='0.02'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.cta-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    opacity: 0.2;
}

.cta-content {
    position: relative;
    z-index: 1;
    max-width: 600px;
    margin: 0 auto;
}

.cta-title {
    font-family: var(--font-display);
    font-size: clamp(1.6rem, 3.2vw, 2.4rem);
    font-weight: 700;
    margin-bottom: var(--space-sm);
    letter-spacing: 3px;
}

.cta-desc {
    font-size: 0.95rem;
    opacity: 0.7;
    margin-bottom: var(--space-lg);
    font-weight: 300;
    line-height: 1.9;
}

.cta-buttons {
    display: flex;
    gap: var(--space-sm);
    justify-content: center;
    flex-wrap: wrap;
}

/* ===== 响应式补充 ===== */
@media (max-width: 768px) {
    .page-title {
        letter-spacing: 4px;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    .cta-buttons .btn {
        width: 100%;
        max-width: 280px;
    }

    .daw-wrap {
        overflow-x: scroll;
    }

    .daw-wrap canvas {
        min-width: 700px;
    }
}

/* ===== 滚动动画增强 ===== */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== 栏目页脚修正 ===== */
.site-footer .logo-mark img {
    height: 80px;
    opacity: 0.9;
}