/**
 * Music Scraper - 组件样式
 * 通用 UI 组件
 */

/* ==================== 赛博朋克背景 ==================== */
/* 注意：背景已移至 html 层（base.css），body 保持透明 */
/* cyber-bg 类现在只负责网格叠加层和布局 */
.cyber-bg {
    background: transparent;
    position: relative;
    /* 使用固定高度而非 min-height，防止 iOS Safari 产生额外滚动空间 */
    height: 100%;
    height: 100dvh;
    overflow: hidden;
}

/* 网格叠加层 */
.cyber-bg::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(var(--grid-color) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
    z-index: 0;
    /* 防止背景跟随滑动 */
    transform: translateZ(0);
    -webkit-transform: translateZ(0);
}

/* ==================== 玻璃卡片 ==================== */
.glass-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    position: relative;
    overflow: hidden;
    transition: all var(--transition-normal);
}

/* 卡片顶部发光边框 */
.glass-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, 
        transparent, 
        var(--neon-cyan), 
        var(--neon-purple), 
        transparent
    );
    opacity: 0.6;
}

.glass-card:hover {
    border-color: var(--border-glow);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), var(--glow-card);
}

/* 可点击卡片 */
.glass-card.clickable {
    cursor: pointer;
}

.glass-card.clickable:active {
    transform: scale(0.98);
}

/* ==================== 霓虹按钮 ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 12px 24px;
    font-size: var(--text-base);
    font-weight: 600;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* 主要按钮 - 渐变填充 */
.btn-primary {
    color: var(--text-inverse);
    background: var(--gradient-primary);
    border: none;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--glow-cyan);
}

.btn-primary:active {
    transform: translateY(0);
}

/* 次要按钮 - 霓虹边框 */
.btn-secondary {
    color: var(--neon-cyan);
    background: transparent;
    border: 2px solid var(--neon-cyan);
}

.btn-secondary:hover {
    color: var(--text-inverse);
    background: var(--neon-cyan);
    box-shadow: var(--glow-cyan);
}

/* 警告按钮 - 橙色边框（用于覆写等有风险操作） */
.btn-warning {
    color: var(--warning-color);
    background: color-mix(in srgb, var(--warning-color) 10%, transparent);
    border: 1px solid var(--warning-color);
}

.btn-warning:hover {
    color: var(--text-inverse);
    background: var(--warning-color);
    box-shadow: var(--glow-orange);
}

/* 粉色按钮 */
.btn-pink {
    color: var(--neon-pink);
    background: transparent;
    border: 2px solid var(--neon-pink);
}

.btn-pink:hover {
    color: var(--text-inverse);
    background: var(--neon-pink);
    box-shadow: var(--glow-pink);
}

/* 幽灵按钮 */
.btn-ghost {
    color: var(--text-secondary);
    background: transparent;
    border: 1px solid var(--border-color);
}

.btn-ghost:hover {
    color: var(--text-primary);
    border-color: var(--neon-cyan);
    background: color-mix(in srgb, var(--neon-cyan) 10%, transparent);
}

/* 按钮尺寸 */
.btn-sm {
    padding: 8px 16px;
    font-size: var(--text-sm);
}

.btn-lg {
    padding: 16px 32px;
    font-size: var(--text-lg);
}

/* 圆形按钮 */
.btn-icon {
    width: 44px;
    height: 44px;
    padding: 0;
    border-radius: var(--radius-full);
}

.btn-icon.btn-sm {
    width: 36px;
    height: 36px;
}

/* 禁用状态 */
.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

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

.btn.loading::after {
    content: '';
    width: 16px;
    height: 16px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-left: var(--spacing-sm);
}

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

/* ==================== 输入框 ==================== */
.input-group {
    position: relative;
}

.input {
    width: 100%;
    padding: 14px 16px;
    font-size: var(--text-base);
    color: var(--text-primary);
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
}

.input::placeholder {
    color: var(--text-tertiary);
}

.input:focus {
    border-color: var(--neon-cyan);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--neon-cyan) 15%, transparent), var(--glow-primary);
}

/* 搜索输入框 */
.input-search {
    padding-left: 44px;
}

.input-search-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-tertiary);
    pointer-events: none;
}

/* ==================== 标签 ==================== */
.tag {
    display: inline-flex;
    align-items: center;
    padding: 4px 12px;
    font-size: var(--text-xs);
    font-weight: 600;
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.tag-cyan {
    color: var(--neon-cyan);
    background: color-mix(in srgb, var(--neon-cyan) 15%, transparent);
    border: 1px solid color-mix(in srgb, var(--neon-cyan) 30%, transparent);
}

.tag-pink {
    color: var(--neon-pink);
    background: color-mix(in srgb, var(--neon-pink) 15%, transparent);
    border: 1px solid color-mix(in srgb, var(--neon-pink) 30%, transparent);
}

.tag-purple {
    color: var(--neon-purple);
    background: color-mix(in srgb, var(--neon-purple) 15%, transparent);
    border: 1px solid color-mix(in srgb, var(--neon-purple) 30%, transparent);
}

.tag-success {
    color: var(--color-success);
    background: color-mix(in srgb, var(--color-success) 15%, transparent);
    border: 1px solid color-mix(in srgb, var(--color-success) 30%, transparent);
}

.tag-green {
    color: #10b981;
    background: rgba(16, 185, 129, 0.15);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.tag-blue {
    color: #3b82f6;
    background: rgba(59, 130, 246, 0.15);
    border: 1px solid rgba(59, 130, 246, 0.3);
}

.tag-orange {
    color: #f59e0b;
    background: rgba(245, 158, 11, 0.15);
    border: 1px solid rgba(245, 158, 11, 0.3);
}

.tag-gray {
    color: #9ca3af;
    background: rgba(156, 163, 175, 0.15);
    border: 1px solid rgba(156, 163, 175, 0.3);
}

/* ==================== 音频波形动画 ==================== */
.audio-bars {
    display: flex;
    align-items: flex-end;
    justify-content: center;
    gap: 3px;
    height: 24px;
}

.audio-bars .bar {
    width: 3px;
    background: var(--gradient-primary);
    border-radius: 2px;
    animation: audioWave 0.8s ease-in-out infinite;
}

.audio-bars .bar:nth-child(1) { animation-delay: 0s; height: 60%; }
.audio-bars .bar:nth-child(2) { animation-delay: 0.1s; height: 40%; }
.audio-bars .bar:nth-child(3) { animation-delay: 0.2s; height: 80%; }
.audio-bars .bar:nth-child(4) { animation-delay: 0.3s; height: 50%; }
.audio-bars .bar:nth-child(5) { animation-delay: 0.4s; height: 70%; }

@keyframes audioWave {
    0%, 100% { transform: scaleY(0.5); }
    50% { transform: scaleY(1); }
}

/* 静态状态 */
.audio-bars.paused .bar {
    animation: none;
    height: 30% !important;
    opacity: 0.5;
}

/* ==================== 进度条 ==================== */
.progress-bar {
    width: 100%;
    height: 4px;
    background: var(--border-color);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    transition: width var(--transition-normal);
    position: relative;
}

.progress-bar-fill::after {
    content: '';
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 12px;
    height: 12px;
    background: var(--neon-cyan);
    border-radius: 50%;
    box-shadow: var(--glow-cyan);
}

/* ==================== 空状态 ==================== */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-2xl);
    text-align: center;
}

.empty-state-icon {
    width: 80px;
    height: 80px;
    margin-bottom: var(--spacing-lg);
    color: var(--text-tertiary);
    opacity: 0.5;
}

.empty-state-title {
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.empty-state-desc {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
    max-width: 280px;
}

/* ==================== 加载动画 ==================== */
.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--neon-cyan);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-overlay);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    z-index: var(--z-modal);
    backdrop-filter: blur(4px);
}

.loading-text {
    color: var(--text-secondary);
    font-size: var(--text-sm);
}

/* 脉冲加载 */
.loading-pulse {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--neon-cyan);
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(0.8);
        opacity: 0.5;
    }
    50% {
        transform: scale(1);
        opacity: 1;
        box-shadow: var(--glow-cyan-strong);
    }
}

/* ==================== 分割线 ==================== */
.divider {
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, 
        transparent, 
        var(--border-color), 
        transparent
    );
    margin: var(--spacing-lg) 0;
}

.divider-glow {
    background: linear-gradient(90deg, 
        transparent, 
        var(--neon-cyan), 
        transparent
    );
    opacity: 0.5;
}

/* ==================== 头像/封面 ==================== */
.cover {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--bg-secondary);
}

.cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.cover-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    width: 100%;
    height: 100%;
    background: var(--gradient-card);
    position: relative;
    overflow: hidden;
}

/* 网格背景效果 */
.cover-placeholder::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(var(--grid-color) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
    background-size: 20px 20px;
    opacity: 0.5;
}

.cover-placeholder svg {
    width: 48px;
    height: 48px;
    color: var(--neon-cyan);
    opacity: 0.6;
    filter: drop-shadow(0 0 8px color-mix(in srgb, var(--neon-cyan) 30%, transparent));
    position: relative;
    z-index: 1;
}

.cover-placeholder-text {
    font-size: 12px;
    color: var(--text-tertiary);
    letter-spacing: 2px;
    text-transform: uppercase;
    position: relative;
    z-index: 1;
}

/* 角落装饰 */
.cover-placeholder-corner {
    position: absolute;
    width: 20px;
    height: 20px;
    border-color: var(--neon-cyan);
    opacity: 0.3;
    z-index: 1;
}

.cover-placeholder-corner.tl {
    top: 12px;
    left: 12px;
    border-top: 2px solid;
    border-left: 2px solid;
}

.cover-placeholder-corner.tr {
    top: 12px;
    right: 12px;
    border-top: 2px solid;
    border-right: 2px solid;
}

.cover-placeholder-corner.bl {
    bottom: 12px;
    left: 12px;
    border-bottom: 2px solid;
    border-left: 2px solid;
}

.cover-placeholder-corner.br {
    bottom: 12px;
    right: 12px;
    border-bottom: 2px solid;
    border-right: 2px solid;
}

/* 封面发光边框 */
.cover-glow {
    box-shadow: var(--glow-primary);
}

.cover-glow::after {
    content: '';
    position: absolute;
    inset: 0;
    border: 2px solid transparent;
    border-radius: inherit;
    background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple)) border-box;
    -webkit-mask: 
        linear-gradient(#fff 0 0) padding-box, 
        linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0.5;
}

/* ==================== 徽章 ==================== */
.badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 20px;
    height: 20px;
    padding: 0 6px;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-inverse);
    background: var(--neon-cyan);
    border-radius: var(--radius-full);
}

.badge-pink {
    background: var(--neon-pink);
}

.badge-dot {
    min-width: 8px;
    width: 8px;
    height: 8px;
    padding: 0;
}