/**
 * NexusTools - 工具教程样式
 */

/* ========== 教程区域容器 ========== */
.tool-tutorial-section {
    margin-top: 40px;
    padding-top: 32px;
    border-top: 1px solid var(--glass-border);
}

/* ========== 提示条 ========== */
.tool-tips {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    background: linear-gradient(135deg, rgba(255, 182, 217, 0.1), rgba(212, 184, 232, 0.1));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    margin-bottom: 24px;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.tool-tips i {
    color: var(--neon-pink);
    font-size: 1.2rem;
}

[data-theme="dark"] .tool-tips {
    background: linear-gradient(135deg, rgba(255, 182, 217, 0.08), rgba(212, 184, 232, 0.08));
}

/* ========== 标签页导航 ========== */
.tutorial-tabs {
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.tutorial-tab-nav {
    display: flex;
    gap: 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--glass-border);
    padding: 8px;
}

.tutorial-tab-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 20px;
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.tutorial-tab-btn:hover {
    color: var(--text-primary);
    background: var(--bg-card);
}

.tutorial-tab-btn.active {
    color: var(--neon-pink);
    background: var(--bg-card);
    box-shadow: var(--shadow-soft);
}

.tutorial-tab-btn i {
    font-size: 1rem;
}

/* ========== 标签页内容 ========== */
.tutorial-tab-content {
    padding: 24px;
}

.tutorial-tab-pane {
    display: none;
}

.tutorial-tab-pane.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ========== 示例卡片网格 ========== */
.examples-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.example-card {
    background: var(--bg-secondary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 20px;
    transition: var(--transition);
}

.example-card:hover {
    border-color: var(--neon-pink);
    transform: translateY(-2px);
    box-shadow: var(--shadow-card);
}

.example-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.example-number {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--neon-pink), var(--neon-purple));
    color: #fff;
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: 50%;
}

.example-title {
    margin: 0;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.example-desc {
    margin: 0 0 12px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.example-input {
    background: var(--bg-primary);
    border-radius: var(--radius-sm);
    padding: 12px;
    margin-bottom: 16px;
    overflow-x: auto;
}

.example-input code {
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 0.85rem;
    color: var(--neon-purple);
    word-break: break-all;
}

.example-try-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 16px;
    background: linear-gradient(135deg, var(--neon-pink), var(--neon-purple));
    border: none;
    border-radius: var(--radius-sm);
    color: #fff;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.example-try-btn:hover {
    transform: scale(1.02);
    box-shadow: 0 4px 15px rgba(255, 182, 217, 0.3);
}

.example-try-btn i {
    font-size: 0.85rem;
}

/* ========== 教程内容 ========== */
.tutorial-content {
    line-height: 1.8;
    color: var(--text-primary);
}

.tutorial-content h2 {
    font-size: 1.4rem;
    font-weight: 600;
    margin: 0 0 16px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--glass-border);
    background: linear-gradient(135deg, var(--neon-pink), var(--neon-purple));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.tutorial-content h3 {
    font-size: 1.15rem;
    font-weight: 600;
    margin: 24px 0 12px;
    color: var(--text-primary);
}

.tutorial-content h4 {
    font-size: 1rem;
    font-weight: 600;
    margin: 20px 0 10px;
    color: var(--text-primary);
}

.tutorial-content p {
    margin: 0 0 16px;
    color: var(--text-secondary);
}

.tutorial-content ul,
.tutorial-content ol {
    margin: 0 0 16px;
    padding-left: 24px;
}

.tutorial-content li {
    margin-bottom: 8px;
    color: var(--text-secondary);
}

.tutorial-content code {
    background: var(--bg-primary);
    padding: 2px 8px;
    border-radius: 4px;
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 0.9em;
    color: var(--neon-purple);
}

.tutorial-content strong {
    color: var(--text-primary);
    font-weight: 600;
}

/* ========== 教程表格 ========== */
.table-wrapper {
    overflow-x: auto;
    margin: 16px 0;
}

.tutorial-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.tutorial-table th,
.tutorial-table td {
    padding: 12px 16px;
    text-align: left;
    border: 1px solid var(--glass-border);
}

.tutorial-table th {
    background: var(--bg-primary);
    font-weight: 600;
    color: var(--text-primary);
}

.tutorial-table td {
    color: var(--text-secondary);
}

.tutorial-table tr:hover td {
    background: var(--bg-card-hover);
}

/* ========== 视频容器 ========== */
.video-container {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%; /* 16:9 */
    background: var(--bg-primary);
    border-radius: var(--radius);
    overflow: hidden;
}

.video-container iframe,
.video-container video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

/* ========== 响应式 ========== */
@media (max-width: 768px) {
    .tutorial-tab-nav {
        flex-wrap: wrap;
    }
    
    .tutorial-tab-btn {
        flex: 1 1 auto;
        min-width: 100px;
        padding: 10px 12px;
        font-size: 0.85rem;
    }
    
    .tutorial-tab-btn span {
        display: none;
    }
    
    .examples-grid {
        grid-template-columns: 1fr;
    }
    
    .tutorial-content h2 {
        font-size: 1.2rem;
    }
    
    .tutorial-content h3 {
        font-size: 1.05rem;
    }
    
    .tool-tips {
        flex-direction: column;
        text-align: center;
    }
}

/* ========== 折叠展开动画 ========== */
.tutorial-collapse {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.tutorial-collapse.expanded {
    max-height: 2000px;
}

/* ========== 展开按钮 ========== */
.tutorial-toggle-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 12px;
    margin-top: 24px;
    background: transparent;
    border: 1px dashed var(--glass-border);
    border-radius: var(--radius);
    color: var(--text-secondary);
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
}

.tutorial-toggle-btn:hover {
    border-color: var(--neon-pink);
    color: var(--neon-pink);
}

.tutorial-toggle-btn i {
    transition: transform 0.3s ease;
}

.tutorial-toggle-btn.expanded i {
    transform: rotate(180deg);
}