/* Component Styles - 组件样式 */

/* Feature Cards */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 2rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px var(--blue-glow);
    border-color: var(--primary-blue);
}

.feature-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.feature-icon svg {
    width: 24px;
    height: 24px;
    fill: var(--text-white);
}

.feature-card h3 {
    color: var(--text-white);
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Tables */
.table-container {
    overflow-x: auto;
    margin: 2rem 0;
    border-radius: 12px;
    border: 1px solid var(--border);
}

table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-tertiary);
}

thead {
    background: var(--primary-blue);
}

th {
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    color: var(--text-white);
}

td {
    padding: 1rem;
    border-top: 1px solid var(--border);
    color: var(--text-gray);
}

tbody tr {
    transition: all 0.3s ease;
}

tbody tr:hover {
    background: rgba(59, 130, 246, 0.1);
}

/* Code Blocks */
.code-block {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.5rem;
    margin: 2rem 0;
    position: relative;
    overflow: hidden;
}

.code-block-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.code-lang {
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-transform: uppercase;
}

.copy-btn {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    color: var(--text-gray);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.85rem;
    transition: all 0.3s ease;
}

.copy-btn:hover {
    background: var(--primary-blue);
    color: var(--text-white);
    border-color: var(--primary-blue);
}

.copy-btn.copied {
    background: #10b981;
    border-color: #10b981;
}

pre {
    overflow-x: auto;
    margin: 0;
}

code {
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.9rem;
    color: var(--text-gray);
    line-height: 1.6;
}

/* Tabs */
.tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.tab-btn {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    color: var(--text-gray);
    padding: 1rem 1.5rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.95rem;
}

.tab-btn:hover {
    border-color: var(--primary-blue);
}

.tab-btn.active {
    background: var(--primary-blue);
    color: var(--text-white);
    border-color: var(--primary-blue);
}

.tab-content {
    display: none;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2rem;
    animation: fadeIn 0.3s ease;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* FAQ Accordion */
.faq-item {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 12px;
    margin-bottom: 1rem;
    overflow: hidden;
}

.faq-question {
    width: 100%;
    background: none;
    border: none;
    padding: 1.5rem;
    text-align: left;
    color: var(--text-white);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s ease;
}

.faq-question:hover {
    background: rgba(59, 130, 246, 0.1);
}

.faq-question::after {
    content: '+';
    font-size: 1.5rem;
    color: var(--primary-blue);
    transition: transform 0.3s ease;
}

.faq-item.active .faq-question::after {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
}

.faq-item.active .faq-answer {
    max-height: 1000px;
}

.faq-answer-content {
    padding: 0 1.5rem 1.5rem;
    color: var(--text-gray);
}

/* Video Cards */
.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.video-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.5rem;
    transition: all 0.3s ease;
    text-decoration: none;
    display: block;
}

.video-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px var(--blue-glow);
    border-color: #ff0000;
}

.video-card h4 {
    color: var(--text-white);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.video-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Use Case Cards */
.usecase-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
}

.usecase-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.5rem;
    transition: all 0.3s ease;
}

.usecase-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-blue);
    box-shadow: 0 15px 30px var(--blue-glow);
}

.usecase-card h4 {
    color: var(--primary-blue);
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.usecase-card ul {
    list-style: none;
    padding: 0;
}

.usecase-card li {
    color: var(--text-gray);
    padding: 0.25rem 0;
    font-size: 0.9rem;
    position: relative;
    padding-left: 1.25rem;
}

.usecase-card li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary-blue);
}

/* Reason Cards Hover */
.reason-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px var(--blue-glow);
    border-color: var(--primary-blue);
}

@media (max-width: 768px) {
    .highlight-grid,
    .feature-grid,
    .usecase-grid {
        grid-template-columns: 1fr;
    }

    .tabs {
        flex-direction: column;
    }

    .tab-btn {
        width: 100%;
    }
}