/* 音色等级标签样式 */
.voice-grade-label {
    position: absolute;
    top: 8px;
    right: 8px;
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 0.7rem;
    font-weight: 600;
    color: white;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    z-index: 10;
    transition: all 0.3s ease;
    backdrop-filter: blur(4px);
}

/* 免费等级 - 绿色 */
.voice-grade-label.grade-free {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.voice-grade-label.grade-free:hover {
    background: linear-gradient(135deg, #059669 0%, #047857 100%);
    transform: scale(1.05);
}

/* 高级等级 - 紫色 */
.voice-grade-label.grade-premium {
    background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
    border: 1px solid rgba(139, 92, 246, 0.3);
}

.voice-grade-label.grade-premium:hover {
    background: linear-gradient(135deg, #7c3aed 0%, #6d28d9 100%);
    transform: scale(1.05);
}

/* VIP等级 - 金色 */
.voice-grade-label.grade-vip {
    background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
    border: 1px solid rgba(251, 191, 36, 0.3);
    box-shadow: 0 2px 8px rgba(251, 191, 36, 0.3);
}

.voice-grade-label.grade-vip:hover {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(251, 191, 36, 0.4);
}

/* 音色卡片悬停时等级标签的动画效果 */
.voice-card:hover .voice-grade-label {
    transform: scale(1.1);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

/* 选中状态下的等级标签 */
.voice-card.selected .voice-grade-label {
    transform: scale(1.05);
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.12);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .voice-grade-label {
        font-size: 0.65rem;
        padding: 3px 6px;
        top: 6px;
        right: 6px;
    }
}

/* 等级标签的文字内容 */
.voice-grade-label .grade-text {
    display: inline-block;
    line-height: 1;
}

/* 为不同等级添加图标支持 */
.voice-grade-label.grade-free::before {
    content: '🆓';
    margin-right: 2px;
    font-size: 0.8em;
}

.voice-grade-label.grade-premium::before {
    content: '⭐';
    margin-right: 2px;
    font-size: 0.8em;
}

.voice-grade-label.grade-vip::before {
    content: '👑';
    margin-right: 2px;
    font-size: 0.8em;
}

/* 等级标签的动画效果 */
@keyframes gradeGlow {
    0% {
        box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    }
    50% {
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    }
    100% {
        box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    }
}

.voice-grade-label.grade-vip {
    animation: gradeGlow 2s ease-in-out infinite;
}

/* 确保等级标签不会被其他元素遮挡 */
.voice-card {
    position: relative;
}

.voice-card .voice-grade-label {
    z-index: 15;
}