/**
 * CRCAI Product Page Styles
 * 产品详情页专用样式
 */

/* ==========================================================================
   0. Product Page Buttons
   ========================================================================== */
.tesla-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
}

.tesla-btn-primary {
    background: linear-gradient(135deg, var(--primary-blue), var(--tech-blue));
    color: white;
    box-shadow: 0 4px 16px rgba(0, 104, 181, 0.3);
}

.tesla-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 104, 181, 0.4);
}

.tesla-btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.tesla-btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-2px);
}

/* CTA Buttons */
.btn-cta-primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 32px;
    background: white;
    color: var(--deep-blue);
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}

.btn-cta-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.btn-cta-secondary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 32px;
    background: transparent;
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.4);
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
}

.btn-cta-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.7);
    transform: translateY(-3px);
}

/* ==========================================================================
   0.5. Section Common Styles
   ========================================================================== */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xxl);
}

.section-label {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--primary-blue);
    margin-bottom: 12px;
}

.section-label::before,
.section-label::after {
    content: '';
    width: 24px;
    height: 1px;
    background: var(--primary-blue);
    opacity: 0.4;
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--spacing-md);
}

.section-desc {
    font-size: 18px;
    color: var(--gray-600);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.7;
}

/* ==========================================================================
   1. Product Hero
   ========================================================================== */
.product-hero {
    min-height: 70vh;
    position: relative;
    display: flex;
    align-items: center;
    background: radial-gradient(ellipse at center, #0a1628 0%, #000000 100%);
    overflow: hidden;
    padding: 120px 0 80px;
}

.product-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: 
        linear-gradient(90deg, transparent 49.5%, rgba(0, 128, 255, 0.1) 50%, transparent 50.5%),
        linear-gradient(0deg, transparent 49.5%, rgba(0, 128, 255, 0.05) 50%, transparent 50.5%);
    background-size: 60px 60px;
    opacity: 0.5;
}

.product-hero-content {
    position: relative;
    z-index: 10;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
    align-items: center;
}

.product-hero-info {
    color: white;
}

.product-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(0, 104, 181, 0.2);
    border: 1px solid rgba(0, 104, 181, 0.4);
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: var(--spacing-lg);
}

.product-hero-badge.blue { color: var(--tech-blue); }
.product-hero-badge.green { 
    color: var(--success-green); 
    background: rgba(40, 167, 69, 0.2);
    border-color: rgba(40, 167, 69, 0.4);
}
.product-hero-badge.red { 
    color: var(--error-red); 
    background: rgba(220, 53, 69, 0.2);
    border-color: rgba(220, 53, 69, 0.4);
}
.product-hero-badge.cyan { 
    color: var(--info-cyan); 
    background: rgba(23, 162, 184, 0.2);
    border-color: rgba(23, 162, 184, 0.4);
}

.product-hero-title {
    font-size: 56px;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
    letter-spacing: -2px;
}

.product-hero-title span {
    display: block;
    font-size: 24px;
    font-weight: 400;
    letter-spacing: 0;
    opacity: 0.7;
    margin-top: 8px;
}

.product-hero-desc {
    font-size: 18px;
    line-height: 1.8;
    opacity: 0.85;
    margin-bottom: var(--spacing-xl);
    max-width: 500px;
}

.product-hero-cta {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.product-hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Architecture Diagram - Enhanced */
.arch-diagram-hero {
    width: 100%;
    max-width: 480px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.arch-layer-hero {
    padding: 16px 24px;
    border-radius: 8px;
    text-align: center;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

.arch-layer-hero.app {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: rgba(255, 255, 255, 0.7);
}

.arch-layer-hero.model {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.12);
    color: rgba(255, 255, 255, 0.6);
}

.arch-layer-hero.framework {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.5);
}

.arch-layer-hero.os {
    background: linear-gradient(135deg, var(--primary-blue), var(--deep-blue));
    border: 2px solid var(--tech-blue);
    color: white;
    font-weight: 700;
    font-size: 16px;
    box-shadow: 0 8px 32px rgba(0, 104, 181, 0.4);
    transform: scale(1.02);
}

.arch-layer-hero.os::before {
    content: '';
    position: absolute;
    inset: -4px;
    border: 2px solid var(--tech-blue);
    border-radius: 10px;
    opacity: 0.3;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.3; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.02); }
}

.arch-layer-hero.hardware {
    background: rgba(33, 37, 41, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.4);
}

/* Stats Row */
.product-hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin-top: var(--spacing-xxl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.product-hero-stat {
    text-align: center;
}

.product-hero-stat-value {
    font-size: 36px;
    font-weight: 700;
    color: var(--tech-blue);
    line-height: 1;
    margin-bottom: 4px;
}

.product-hero-stat-label {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.6);
}

/* ==========================================================================
   2. Product Features Section
   ========================================================================== */
.product-features-section {
    padding: var(--spacing-xxxl) 0;
    background: white;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.feature-card {
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: 12px;
    padding: var(--spacing-xl);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-blue);
    opacity: 0;
    transition: opacity 0.3s;
}

.feature-card:hover {
    border-color: var(--primary-blue);
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 104, 181, 0.12);
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-card.green::before { background: var(--success-green); }
.feature-card.green:hover { border-color: var(--success-green); }
.feature-card.red::before { background: var(--error-red); }
.feature-card.red:hover { border-color: var(--error-red); }
.feature-card.cyan::before { background: var(--info-cyan); }
.feature-card.cyan:hover { border-color: var(--info-cyan); }

.feature-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--light-blue);
    border-radius: 12px;
    color: var(--primary-blue);
    margin-bottom: var(--spacing-lg);
}

.feature-card.green .feature-icon {
    background: #E8F5E9;
    color: var(--success-green);
}

.feature-card.red .feature-icon {
    background: #FFEBEE;
    color: var(--error-red);
}

.feature-card.cyan .feature-icon {
    background: #E0F7FA;
    color: var(--info-cyan);
}

.feature-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--spacing-sm);
}

.feature-desc {
    font-size: 14px;
    color: var(--gray-600);
    line-height: 1.7;
    margin-bottom: var(--spacing-lg);
}

.feature-list {
    list-style: none;
}

.feature-list li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 13px;
    color: var(--gray-600);
    padding: 8px 0;
    border-bottom: 1px solid var(--gray-100);
}

.feature-list li:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.feature-list li i {
    flex-shrink: 0;
    color: var(--primary-blue);
    margin-top: 2px;
}

.feature-card.green .feature-list li i {
    color: var(--success-green);
}

.feature-card.red .feature-list li i {
    color: var(--error-red);
}

.feature-card.cyan .feature-list li i {
    color: var(--info-cyan);
}

/* ==========================================================================
   3. Use Cases Section
   ========================================================================== */
.use-cases-section {
    padding: var(--spacing-xxxl) 0;
    background: var(--gray-100);
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
}

.use-case-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    transition: all 0.3s ease;
}

.use-case-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.1);
}

.use-case-header {
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    border-bottom: 1px solid var(--gray-100);
}

.use-case-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    flex-shrink: 0;
}

.use-case-card:nth-child(1) .use-case-icon { background: var(--light-blue); color: var(--primary-blue); }
.use-case-card:nth-child(2) .use-case-icon { background: #E8F5E9; color: var(--success-green); }
.use-case-card:nth-child(3) .use-case-icon { background: #FFEBEE; color: var(--error-red); }
.use-case-card:nth-child(4) .use-case-icon { background: #E0F7FA; color: var(--info-cyan); }

.use-case-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--gray-900);
}

.use-case-subtitle {
    font-size: 13px;
    color: var(--gray-500);
}

.use-case-body {
    padding: var(--spacing-lg);
}

.use-case-desc {
    font-size: 14px;
    color: var(--gray-600);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.use-case-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.use-case-tag {
    padding: 4px 12px;
    background: var(--gray-100);
    border-radius: 12px;
    font-size: 12px;
    color: var(--gray-600);
}

/* ==========================================================================
   4. Technical Specs Section
   ========================================================================== */
.specs-section {
    padding: var(--spacing-xxxl) 0;
    background: white;
}

.specs-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
}

.specs-content h3 {
    font-size: 28px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--spacing-md);
}

.specs-content > p {
    font-size: 16px;
    color: var(--gray-600);
    line-height: 1.7;
    margin-bottom: var(--spacing-xl);
}

.specs-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.spec-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--gray-100);
    border-radius: 8px;
    transition: all 0.2s;
}

.spec-item:hover {
    background: var(--light-blue);
}

.spec-item i {
    color: var(--primary-blue);
    flex-shrink: 0;
    margin-top: 2px;
}

.spec-item.green i { color: var(--success-green); }
.spec-item.green:hover { background: #E8F5E9; }
.spec-item.red i { color: var(--error-red); }
.spec-item.red:hover { background: #FFEBEE; }
.spec-item.cyan i { color: var(--info-cyan); }
.spec-item.cyan:hover { background: #E0F7FA; }

.spec-item strong {
    display: block;
    font-size: 14px;
    color: var(--gray-900);
    margin-bottom: 2px;
}

.spec-item span {
    font-size: 13px;
    color: var(--gray-600);
}

.specs-visual {
    display: flex;
    align-items: center;
    justify-content: center;
}

.specs-diagram {
    width: 100%;
    max-width: 400px;
    background: var(--gray-100);
    border-radius: 12px;
    padding: var(--spacing-xl);
}

.diagram-title {
    font-size: 14px;
    font-weight: 700;
    color: var(--gray-900);
    text-align: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--gray-200);
}

.diagram-layers {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.diagram-layer {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: 12px 16px;
    background: white;
    border-radius: 8px;
    border: 1px solid var(--gray-200);
    font-size: 13px;
    color: var(--gray-700);
}

.diagram-layer.highlight {
    background: var(--primary-blue);
    border-color: var(--primary-blue);
    color: white;
    font-weight: 600;
}

.diagram-layer.highlight.green {
    background: var(--success-green);
    border-color: var(--success-green);
}

.diagram-layer.highlight.red {
    background: var(--error-red);
    border-color: var(--error-red);
}

.diagram-layer.highlight.cyan {
    background: var(--info-cyan);
    border-color: var(--info-cyan);
}

.diagram-layer i {
    flex-shrink: 0;
}

/* ==========================================================================
   5. Integration Section
   ========================================================================== */
.integration-section {
    padding: var(--spacing-xxxl) 0;
    background: var(--gray-100);
}

.integration-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
}

.integration-card {
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: 12px;
    padding: var(--spacing-lg);
    text-align: center;
    transition: all 0.3s ease;
}

.integration-card:hover {
    border-color: var(--primary-blue);
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 104, 181, 0.1);
}

.integration-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--light-blue);
    border-radius: 16px;
    color: var(--primary-blue);
}

.integration-card.green .integration-icon {
    background: #E8F5E9;
    color: var(--success-green);
}

.integration-card.green:hover {
    border-color: var(--success-green);
    box-shadow: 0 8px 24px rgba(40, 167, 69, 0.1);
}

.integration-card.red .integration-icon {
    background: #FFEBEE;
    color: var(--error-red);
}

.integration-card.red:hover {
    border-color: var(--error-red);
    box-shadow: 0 8px 24px rgba(220, 53, 69, 0.1);
}

.integration-card.cyan .integration-icon {
    background: #E0F7FA;
    color: var(--info-cyan);
}

.integration-card.cyan:hover {
    border-color: var(--info-cyan);
    box-shadow: 0 8px 24px rgba(23, 162, 184, 0.1);
}

.integration-name {
    font-size: 16px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 4px;
}

.integration-desc {
    font-size: 13px;
    color: var(--gray-500);
}

/* ==========================================================================
   6. CTA Section
   ========================================================================== */
.product-cta-section {
    padding: var(--spacing-xxxl) 0;
    background: linear-gradient(135deg, var(--deep-blue) 0%, #0a1628 100%);
    color: white;
    position: relative;
    overflow: hidden;
}

.product-cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: repeating-linear-gradient(90deg, transparent, transparent 1px, rgba(255,255,255,0.02) 1px, rgba(255,255,255,0.02) 2px);
}

.product-cta-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.product-cta-title {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.product-cta-desc {
    font-size: 16px;
    opacity: 0.85;
    margin-bottom: var(--spacing-xl);
    line-height: 1.7;
}

.product-cta-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* Related Products */
.related-products {
    margin-top: var(--spacing-xxl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.related-title {
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    opacity: 0.6;
    margin-bottom: var(--spacing-lg);
}

.related-grid {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
}

.related-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 12px 20px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 8px;
    text-decoration: none;
    color: white;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s;
}

.related-item:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

.related-item i {
    opacity: 0.7;
}

/* ==========================================================================
   7. Responsive
   ========================================================================== */
@media (max-width: 1200px) {
    .product-hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .product-hero-info {
        order: 1;
    }
    
    .product-hero-visual {
        order: 0;
        margin-bottom: var(--spacing-xl);
    }
    
    .product-hero-desc {
        margin-left: auto;
        margin-right: auto;
    }
    
    .product-hero-cta {
        justify-content: center;
    }
    
    .arch-diagram-hero {
        max-width: 400px;
    }
}

@media (max-width: 968px) {
    .product-hero {
        min-height: auto;
        padding: 100px 0 60px;
    }
    
    .product-hero-title {
        font-size: 42px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .use-cases-grid {
        grid-template-columns: 1fr;
    }
    
    .specs-container {
        grid-template-columns: 1fr;
    }
    
    .specs-visual {
        order: -1;
        margin-bottom: var(--spacing-xl);
    }
    
    .integration-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .product-hero-title {
        font-size: 32px;
    }
    
    .product-hero-stats {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-sm);
    }
    
    .product-hero-stat-value {
        font-size: 28px;
    }
    
    .product-cta-title {
        font-size: 28px;
    }
    
    .related-grid {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 480px) {
    .product-hero-title {
        font-size: 28px;
    }
    
    .product-hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .product-hero-cta .tesla-btn {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }
    
    .integration-grid {
        grid-template-columns: 1fr;
    }
}