/* Documentation Support Page Styles */

/* 防止页面加载时的闪烁 */
.docs-page {
    opacity: 1;
    transition: opacity 0.3s ease;
}

.docs-page:not(.loaded) {
    /* 页面加载时的初始状态 - 保持可见但准备好过渡 */
}

/* Hero Section */
.docs-hero {
    background: linear-gradient(135deg, var(--deep-space-blue) 0%, #1a2332 100%);
    padding: 120px 0 80px;
    position: relative;
    overflow: hidden;
}

.docs-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 20%, rgba(0, 240, 255, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 70% 80%, rgba(99, 102, 241, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.docs-hero-content {
    text-align: center;
    position: relative;
    z-index: 2;
}

.docs-title {
    font-family: var(--font-heading);
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 1rem;
    text-shadow: var(--glow-cyan);
}

.docs-subtitle {
    font-size: 1.5rem;
    color: var(--fluorescent-cyan);
    margin-bottom: 2rem;
    font-weight: 500;
}

.docs-intro {
    max-width: 600px;
    margin: 0 auto;
}

.docs-intro p {
    font-size: 1.2rem;
    color: var(--silver-gray);
    line-height: 1.8;
}

/* QR Codes Section */
.qr-codes-section {
    padding: 80px 0;
    background: #f8fafc;
}

.qr-codes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 3rem;
    max-width: 1000px;
    margin: 0 auto;
}

.qr-card {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid #e2e8f0;
    position: relative;
    overflow: hidden;
}

.qr-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--dark-purple), var(--fluorescent-cyan));
}

.qr-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.qr-card-header {
    margin-bottom: 2rem;
}

.qr-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--dark-purple), var(--light-purple));
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    box-shadow: var(--glow-purple);
}

.qr-icon i {
    font-size: 1.5rem;
    color: var(--white);
}

.docs-page .qr-card h3 {
    font-size: 1.5rem;
    color: var(--deep-space-blue);
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.qr-description {
    color: #718096;
    font-size: 1rem;
}

.qr-code-container {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 2rem;
}

.qr-code-image {
    width: 200px;
    height: 200px;
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
}

.qr-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    border-radius: var(--border-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all 0.3s ease;
}

.qr-code-container:hover .qr-overlay {
    opacity: 1;
}

.qr-overlay-content {
    text-align: center;
    color: var(--white);
}

.qr-overlay-content i {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    display: block;
}

.qr-overlay-content span {
    font-size: 0.9rem;
}

.qr-card-footer {
    border-top: 1px solid #e2e8f0;
    padding-top: 0.75rem;
}

.qr-features {
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
    line-height: 1;
}

.feature-item {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.3rem;
    color: #4a5568;
    font-size: 0.8rem;
    line-height: 1;
    padding: 0;
    margin: 0;
    min-height: auto;
    height: 18px;
}

.feature-item i {
    color: var(--dark-purple);
    width: 12px;
    height: 12px;
    font-size: 12px;
    line-height: 1;
}

/* Support Features */
.support-features {
    padding: 60px 0;
    background: var(--white);
}

/* Override global paragraph styles for docs page */
.support-features p,
.faq-section p,
.contact-info p {
    line-height: 1.4 !important;
    margin-bottom: 0.5rem !important;
    font-size: 1rem !important;
}

.docs-page .section-title {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    text-align: center;
    color: var(--deep-space-blue);
    margin-bottom: 3rem;
    font-weight: 600;
}

.docs-page .features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.feature-card {
    text-align: center;
    padding: 1.5rem;
    border-radius: var(--border-radius-lg);
    transition: all 0.3s ease;
}

.feature-card:hover {
    background: #f8fafc;
    transform: translateY(-5px);
}

.feature-icon {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--fluorescent-cyan), var(--green-accent));
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    box-shadow: var(--glow-cyan);
}

.feature-icon i {
    font-size: 1.8rem;
    color: var(--white);
}

.docs-page .feature-card h3 {
    font-size: 1.3rem;
    color: var(--deep-space-blue);
    margin-bottom: 0.75rem;
    font-weight: 600;
}

.feature-card p {
    color: #4a5568;
    line-height: 1.5;
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

/* FAQ Section */
.faq-section {
    padding: 80px 0;
    background: #f8fafc;
}

.faq-grid {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--white);
    border-radius: var(--border-radius-md);
    margin-bottom: 0.75rem;
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.faq-question {
    padding: 1.2rem 1.5rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s ease;
}

.faq-question:hover {
    background: #f8fafc;
}

.docs-page .faq-question h4 {
    font-size: 1.1rem;
    color: var(--deep-space-blue);
    margin: 0;
    font-weight: 600;
}

.faq-question i {
    color: var(--dark-purple);
    transition: transform 0.3s ease;
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    padding: 0 1.5rem;
    background: #f9f9f9;
    border-top: 1px solid #e2e8f0;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 300px;
    padding: 1rem 1.5rem;
}

.faq-answer p {
    color: #4a5568;
    line-height: 1.4;
    margin: 0;
    font-size: 1rem;
}

/* Contact Information */
.contact-info {
    padding: 80px 0;
    background: var(--white);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.contact-item {
    text-align: center;
    padding: 2rem;
}

.contact-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--orange), var(--orange-accent));
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    box-shadow: var(--glow-orange);
}

.contact-icon i {
    font-size: 1.5rem;
    color: var(--white);
}

.docs-page .contact-item h3 {
    font-size: 1.2rem;
    color: var(--deep-space-blue);
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.contact-item p {
    font-size: 1.1rem;
    color: var(--dark-purple);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.contact-note {
    font-size: 0.9rem;
    color: #718096;
}

/* CTA Section */
.docs-cta {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--dark-purple) 0%, var(--light-purple) 100%);
    text-align: center;
}

.docs-page .cta-content h2 {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    color: var(--white);
    margin-bottom: 1rem;
    font-weight: 600;
}

.cta-content p {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2rem;
}

.docs-page .cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.docs-page .btn-primary, .docs-page .btn-secondary {
    padding: 1rem 2rem;
    border-radius: var(--border-radius-md);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-block;
}

.docs-page .btn-primary {
    background: var(--white);
    color: var(--dark-purple);
}

.docs-page .btn-primary:hover {
    background: var(--silver-gray);
    transform: translateY(-2px);
}

.docs-page .btn-secondary {
    background: transparent;
    color: var(--white);
    border: 2px solid var(--white);
}

.docs-page .btn-secondary:hover {
    background: var(--white);
    color: var(--dark-purple);
    transform: translateY(-2px);
}

/* Tablet Responsive Design - 平板端优化 */
@media (max-width: 1024px) and (min-width: 769px) {
    .docs-title {
        font-size: 2.7rem;
    }

    .docs-subtitle {
        font-size: 1.1rem;
    }

    .qr-card h3 {
        font-size: 1.2rem;
    }

    .qr-card p {
        font-size: 0.9rem;
    }

    .doc-category h3 {
        font-size: 1.4rem;
    }

    .doc-item h4 {
        font-size: 1.1rem;
    }

    .doc-item p {
        font-size: 0.9rem;
    }

    /* 布局网格优化 */
    .qr-codes-grid {
        grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
        gap: var(--spacing-lg);
    }

    .docs-page .features-grid {
        grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
        gap: var(--spacing-md);
    }

    .contact-grid {
        grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
        gap: var(--spacing-md);
    }
}

/* Mobile Responsive Design */
@media (max-width: 768px) {
    .docs-title {
        font-size: 2.2rem;
    }

    .docs-subtitle {
        font-size: 1rem;
    }

    .qr-card h3 {
        font-size: 1.1rem;
    }

    .qr-card p {
        font-size: 0.85rem;
    }

    .doc-category h3 {
        font-size: 1.2rem;
    }

    .doc-item h4 {
        font-size: 1rem;
    }

    .doc-item p {
        font-size: 0.85rem;
    }
    
    .qr-codes-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .qr-card {
        padding: 1.5rem;
    }
    
    .qr-code-image {
        width: 160px;
        height: 160px;
    }
    
    .docs-page .features-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .docs-page .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .docs-page .btn-primary, .docs-page .btn-secondary {
        width: 200px;
    }
}

/* Small Screen Responsive Design */
@media (max-width: 480px) {
    .docs-title {
        font-size: 1.8rem;
    }

    .docs-subtitle {
        font-size: 0.95rem;
    }

    .qr-card h3 {
        font-size: 1rem;
    }

    .qr-card p {
        font-size: 0.8rem;
    }

    .doc-category h3 {
        font-size: 1.1rem;
    }

    .doc-item h4 {
        font-size: 0.95rem;
    }

    .doc-item p {
        font-size: 0.8rem;
    }

    .docs-page .btn-primary, .docs-page .btn-secondary {
        width: 180px;
        font-size: 0.9rem;
    }

    /* 布局网格进一步优化 */
    .qr-codes-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .docs-page .features-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }
}