/* PPT导航栏样式 - 使用主题tbfa图标，不影响其他图标 */
.nab-ppt-nav-wrapper {
    margin: 20px 0;
    padding: 0;
    background: transparent;
}

.nab-ppt-nav {
    display: flex;
    flex-wrap: nowrap;
    gap: 12px;
    justify-content: flex-start;
    align-items: center;
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
    scrollbar-color: rgba(255, 193, 7, 0.3) transparent;
}

.nab-ppt-nav::-webkit-scrollbar {
    height: 6px;
}

.nab-ppt-nav::-webkit-scrollbar-track {
    background: transparent;
}

.nab-ppt-nav::-webkit-scrollbar-thumb {
    background: rgba(255, 193, 7, 0.3);
    border-radius: 3px;
}

.nab-ppt-nav::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 193, 7, 0.5);
}

.nab-ppt-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    background: #ffeb3b;
    color: #000;
    text-decoration: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    border: 2px solid #000;
    position: relative;
    overflow: hidden;
    white-space: nowrap;
    flex-shrink: 0;
}

.nab-ppt-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s ease;
    z-index: 0;
}

/* 左右晃动动画 */
@keyframes shake-horizontal {
    0%, 100% {
        transform: translateX(0);
    }
    25% {
        transform: translateX(-3px);
    }
    75% {
        transform: translateX(3px);
    }
}

.nab-ppt-btn:hover {
    animation: shake-horizontal 0.5s ease-in-out infinite;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
    background: #ffc107;
    border-color: #000;
    color: #000 !important;
}

.nab-ppt-btn:hover span:not(.free-tag) {
    color: #000 !important;
}

.nab-ppt-btn:hover .tbfa {
    color: #ff0000 !important;
}

.nab-ppt-btn:hover .free-tag {
    color: #ff0000 !important;
    background: rgba(0, 0, 0, 0.1) !important;
    border-color: rgba(0, 0, 0, 0.3) !important;
}

.nab-ppt-btn:hover::before {
    left: 100%;
}

/* 使用主题tbfa图标，确保不影响其他图标 */
.nab-ppt-btn .tbfa {
    font-family: "tbfa" !important;
    font-size: 16px;
    font-weight: normal;
    font-style: normal;
    display: inline-block;
    line-height: 1;
    color: #ff0000 !important;
    position: relative;
    z-index: 1;
}

.nab-ppt-btn span:not(.free-tag) {
    display: inline-block;
    color: #000;
    position: relative;
    z-index: 1;
}

.nab-ppt-btn .free-tag {
    display: inline-block;
    padding: 2px 6px;
    background: rgba(0, 0, 0, 0.1);
    border-radius: 4px;
    font-size: 11px;
    font-weight: 700;
    margin-left: 4px;
    border: 1px solid rgba(0, 0, 0, 0.3);
    color: #ff0000 !important;
    position: relative;
    z-index: 1;
}

/* 深色模式适配 */
body.darking .nab-ppt-nav-wrapper,
html[data-night="1"] .nab-ppt-nav-wrapper {
    background: transparent;
}

body.darking .nab-ppt-btn,
html[data-night="1"] .nab-ppt-btn {
    background: #ffc107;
    box-shadow: 0 2px 8px rgba(255, 193, 7, 0.3);
    border-color: #fff;
    color: #000;
}

body.darking .nab-ppt-btn .tbfa,
html[data-night="1"] .nab-ppt-btn .tbfa {
    color: #ff0000 !important;
}

body.darking .nab-ppt-btn span:not(.free-tag),
html[data-night="1"] .nab-ppt-btn span:not(.free-tag) {
    color: #000;
}

body.darking .nab-ppt-btn .free-tag,
html[data-night="1"] .nab-ppt-btn .free-tag {
    color: #ff0000 !important;
    background: rgba(0, 0, 0, 0.15);
    border-color: rgba(0, 0, 0, 0.4);
}

body.darking .nab-ppt-btn:hover,
html[data-night="1"] .nab-ppt-btn:hover {
    animation: shake-horizontal 0.5s ease-in-out infinite;
    background: #ffeb3b;
    box-shadow: 0 4px 16px rgba(255, 235, 59, 0.4);
    border-color: #fff;
    color: #000 !important;
}

body.darking .nab-ppt-btn:hover span:not(.free-tag),
html[data-night="1"] .nab-ppt-btn:hover span:not(.free-tag) {
    color: #000 !important;
}

body.darking .nab-ppt-btn:hover .tbfa,
html[data-night="1"] .nab-ppt-btn:hover .tbfa {
    color: #ff0000 !important;
}

body.darking .nab-ppt-btn:hover .free-tag,
html[data-night="1"] .nab-ppt-btn:hover .free-tag {
    color: #ff0000 !important;
    background: rgba(0, 0, 0, 0.2) !important;
    border-color: rgba(0, 0, 0, 0.5) !important;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nab-ppt-nav {
        gap: 8px;
    }
    
    .nab-ppt-btn {
        padding: 8px 12px;
        font-size: 13px;
    }
    
    .nab-ppt-btn .tbfa {
        font-size: 14px;
    }
    
    /* 移动端保持文字显示，但允许横向滚动 */
    .nab-ppt-btn span:not(.free-tag) {
        display: inline-block;
    }
    
    .nab-ppt-btn .free-tag {
        display: inline-block;
    }
}

@media (max-width: 480px) {
    .nab-ppt-nav {
        gap: 6px;
    }
    
    .nab-ppt-btn {
        padding: 6px 10px;
        font-size: 12px;
    }
}