/* 全域變數 */
:root {
    --global-soundtrack-accent-pink: #ffafbd;
    --global-soundtrack-accent-blue: #c9ffbf;
    --global-soundtrack-accent-purple: #a88beb;
    --global-soundtrack-accent-yellow: #ffedbc;
    --global-soundtrack-tag-bg: #f0f0f0;
    --global-soundtrack-text-dark: #333333;
    --global-soundtrack-img-placeholder: #e0e0e0;
    --global-soundtrack-card-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    --global-soundtrack-glow-gradient: linear-gradient(135deg, #ffafbd 0%, #a88beb 50%, #c9ffbf 100%);
    --global-soundtrack-card-hover-transform: translateY(-8px) scale(1.02);
    --global-soundtrack-transition-smooth: cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* 標頭與氛圍視覺 */
.global-soundtrack .hero-section {
    position: relative;
    padding: 40px 0 20px 0;
    text-align: center;
}

.global-soundtrack .hero-title {
    font-size: 2.8rem;
    font-weight: 800;
    background: linear-gradient(45deg, #333333, #ffafbd, #a88beb);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: gradientMove 6s ease infinite;
    letter-spacing: -0.5px;
    margin-bottom: 12px;
}

.global-soundtrack .hero-subtitle {
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 16px;
}

/* 頂部按鈕（已調整至描述下方） */
.global-soundtrack .hero-btn {
    display: inline-block;
    margin: 0 0 30px 0;
    padding: 10px 24px;
    background: var(--global-soundtrack-glow-gradient);
    border: none;
    border-radius: 20px;
    font-size: 0.95rem;
    font-weight: 700;
    color: #333;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-decoration: none;
}

.global-soundtrack .hero-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.12);
}

/* 區塊標題 */
.global-soundtrack .section-header {
    margin: 40px 0 20px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.global-soundtrack .section-title {
    font-size: 1.6rem;
    font-weight: 700;
    color: #222;
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 0;
}

/* 主熱門強推黑膠旋轉卡片 */
.global-soundtrack .featured-banner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    background: #ffffff;
    border-radius: 24px;
    padding: 30px;
    box-shadow: var(--global-soundtrack-card-shadow);
    margin-bottom: 50px;
    position: relative;
    overflow: hidden;
    align-items: center;
}

.global-soundtrack .featured-banner::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 6px;
    height: 100%;
    background: var(--global-soundtrack-glow-gradient);
}

.global-soundtrack .vinyl-container {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* 強化黑膠唱片刻痕與光澤感，使動態旋轉極為明顯 */
.global-soundtrack .vinyl-disc {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background:
        /* 擬真黑膠反光角 */
            conic-gradient(
                    from 0deg,
                    rgba(255, 255, 255, 0.15) 0deg,
                    rgba(0, 0, 0, 0.8) 45deg,
                    rgba(255, 255, 255, 0.15) 90deg,
                    rgba(0, 0, 0, 0.8) 180deg,
                    rgba(255, 255, 255, 0.15) 270deg,
                    rgba(0, 0, 0, 0.8) 360deg
            ),
                /* 黑膠同心圓聲軌刻痕 */
            repeating-radial-gradient(
                    circle at center,
                    #111 0px,
                    #111 2px,
                    #222 3px,
                    #222 4px,
                    #0d0d0d 5px
            );
    background-blend-mode: overlay;
    position: absolute;
    right: 10px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.3);
    animation: spin 12s linear infinite;
    display: flex;
    align-items: center;
    justify-content: center;
}

.global-soundtrack .vinyl-disc::before {
    content: "";
    position: absolute;
    width: 180px;
    height: 180px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-sizing: border-box;
}

.global-soundtrack .vinyl-disc::after {
    content: "";
    width: 40px;
    height: 40px;
    background: var(--global-soundtrack-accent-pink);
    border-radius: 50%;
    border: 4px solid #fff;
    box-shadow: inset 0 0 4px rgba(0,0,0,0.5);
}

.global-soundtrack .featured-cover {
    width: 220px;
    height: 220px;
    object-fit: cover;
    border-radius: 16px;
    z-index: 2;
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
    transition: transform 0.4s var(--global-soundtrack-transition-smooth);
}

.global-soundtrack .featured-banner:hover .featured-cover {
    transform: translateX(-15px);
}

.global-soundtrack .featured-info {
    z-index: 2;
}

.global-soundtrack .badge-hot {
    display: inline-block;
    background: var(--global-soundtrack-accent-pink);
    color: #fff;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.global-soundtrack .featured-title {
    font-size: 1.8rem;
    margin-bottom: 8px;
}

.global-soundtrack .featured-meta {
    color: #777;
    font-size: 0.95rem;
    margin-bottom: 16px;
}

.global-soundtrack .lyric-preview {
    background: #fdf6f0;
    border-left: 4px solid var(--global-soundtrack-accent-pink);
    padding: 12px 16px;
    border-radius: 8px;
    font-style: italic;
    color: #555;
    margin-bottom: 20px;
}

/* 網格卡片區塊 */
.global-soundtrack .ost-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 30px;
    margin-bottom: 20px;
}

.global-soundtrack .ost-card {
    background: #ffffff;
    border-radius: 20px;
    padding: 18px;
    box-shadow: var(--global-soundtrack-card-shadow);
    transition: all 0.4s var(--global-soundtrack-transition-smooth);
    position: relative;
    display: flex;
    flex-direction: column;
    cursor: pointer;
}

.global-soundtrack .ost-card:hover {
    transform: var(--global-soundtrack-card-hover-transform);
    box-shadow: 0 20px 40px rgba(0,0,0,0.12);
}

.global-soundtrack .card-img-wrapper {
    position: relative;
    width: 100%;
    padding-top: 100%;
    border-radius: 14px;
    overflow: hidden;
    background-color: var(--global-soundtrack-img-placeholder);
    margin-bottom: 16px;
}

.global-soundtrack .card-img-link {
    display: block;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.global-soundtrack .card-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.global-soundtrack .ost-card:hover .card-img {
    transform: scale(1.08);
}

.global-soundtrack .card-title-link {
    text-decoration: none;
    color: inherit;
    display: block;
}

.global-soundtrack .card-title {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 6px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: color 0.3s ease;
}

.global-soundtrack .card-title-link:hover .card-title {
    color: #a88beb;
}

.global-soundtrack .card-subtitle {
    font-size: 0.85rem;
    color: #888;
    margin-bottom: 10px;
    display:-webkit-box;
    -webkit-box-orient:vertical;
    -webkit-line-clamp:2;
    overflow:hidden;
    text-overflow:ellipsis;
}

/* 描述下方 TAG 標籤群組 */
.global-soundtrack .card-tags-group {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 12px;
}

.global-soundtrack .tag-item {
    display: inline-block;
    background-color: var(--global-soundtrack-tag-bg);
    color: #666;
    font-size: 0.72rem;
    padding: 3px 8px;
    border-radius: 6px;
    font-weight: 500;
    text-decoration: none;
    transition: background-color 0.2s ease, color 0.2s ease;
}

.global-soundtrack .tag-item:hover {
    background-color: var(--global-soundtrack-accent-purple);
    color: #ffffff;
}

.global-soundtrack .card-footer {
    margin-top: auto;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    border-top: 1px solid #f5f5f5;
    padding-top: 12px;
}

.global-soundtrack .action-btn {
    display: inline-block;
    background: var(--global-soundtrack-accent-blue);
    border: none;
    padding: 6px 14px;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 700;
    color: #2b5d22;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.3s ease;
}

.global-soundtrack .action-btn:hover {
    background: #b1f0a5;
}

/* 關鍵格動畫定義 */
@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes gradientMove {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* 響應式微調 */
@media (max-width: 768px) {
    .global-soundtrack .featured-banner {
        grid-template-columns: 1fr;
    }
    .global-soundtrack .vinyl-disc {
        display: none;
    }
    .global-soundtrack .featured-cover {
        margin: 0 auto;
    }
}