/* 技术页面专用样式 */

/* Hero区域 */
.tech-hero {
    height: 40vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background: var(--gradient-primary);
    overflow: hidden;
}

.tech-hero .hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

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

.tech-hero .hero-title {
    font-size: 3rem;
    font-weight: 700;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 20px;
}

.tech-hero .hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* 编码系统 */
.encoding-system {
    padding: 100px 0;
    background: var(--secondary-bg);
}

.encoding-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    margin-top: 60px;
}

.encoding-theory h3,
.encoding-visualization h3 {
    color: var(--accent-gold);
    font-size: 1.5rem;
    margin-bottom: 30px;
}

.encoding-table {
    background: rgba(26, 31, 46, 0.8);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    overflow: hidden;
    margin-top: 20px;
}

.table-header {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr 2fr;
    background: var(--accent-gold);
    color: var(--primary-bg);
    font-weight: 600;
}

.header-cell {
    padding: 15px 10px;
    text-align: center;
    border-right: 1px solid rgba(10, 14, 26, 0.2);
}

.header-cell:last-child {
    border-right: none;
}

.table-row {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr 2fr;
    border-bottom: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.table-row:hover {
    background: rgba(212, 175, 55, 0.1);
}

.table-row:last-child {
    border-bottom: none;
}

.cell {
    padding: 12px 10px;
    text-align: center;
    color: var(--text-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
}

.cell:last-child {
    border-right: none;
}

.cell.symbol {
    font-size: 1.5rem;
    color: var(--accent-gold);
}

.cell.code {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
    color: var(--accent-cyan);
}

.chart-container {
    height: 400px;
    background: rgba(26, 31, 46, 0.3);
    border: 1px solid var(--border-color);
    border-radius: 10px;
}

/* 算法实现 */
.algorithm-implementation {
    padding: 100px 0;
    background: var(--primary-bg);
}

.algorithm-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 30px;
    margin-top: 60px;
}

.algorithm-card {
    background: rgba(26, 31, 46, 0.8);
    border: 1px solid var(--border-color);
    border-radius: 15px;
    padding: 30px;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.algorithm-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-gold);
    box-shadow: 0 15px 35px rgba(212, 175, 55, 0.2);
}

.algorithm-card h3 {
    color: var(--accent-gold);
    font-size: 1.3rem;
    margin-bottom: 20px;
}

.code-block {
    background: rgba(10, 14, 26, 0.9);
    border: 1px solid rgba(212, 175, 55, 0.3);
    border-radius: 8px;
    padding: 20px;
    overflow-x: auto;
}

.code-block pre {
    margin: 0;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
    line-height: 1.6;
}

.code-block code {
    color: var(--text-secondary);
}

/* 性能分析 */
.performance-analysis {
    padding: 100px 0;
    background: var(--secondary-bg);
}

.performance-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 30px;
    margin-top: 60px;
}

.performance-card {
    background: rgba(26, 31, 46, 0.8);
    border: 1px solid var(--border-color);
    border-radius: 15px;
    padding: 30px;
    backdrop-filter: blur(10px);
}

.performance-card h3 {
    color: var(--accent-gold);
    font-size: 1.3rem;
    margin-bottom: 20px;
    text-align: center;
}

.chart-container {
    height: 300px;
    background: rgba(10, 14, 26, 0.3);
    border: 1px solid var(--border-color);
    border-radius: 8px;
}

/* 系统架构 */
.system-architecture {
    padding: 100px 0;
    background: var(--primary-bg);
}

.architecture-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 60px;
    margin-top: 60px;
}

.architecture-diagram h3,
.architecture-details h3 {
    color: var(--accent-gold);
    font-size: 1.5rem;
    margin-bottom: 30px;
}

.architecture-layers {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.layer {
    background: rgba(26, 31, 46, 0.8);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    transition: all 0.3s ease;
}

.layer:hover {
    border-color: var(--accent-gold);
    transform: translateX(10px);
}

.layer h4 {
    color: var(--accent-gold);
    font-size: 1.2rem;
    margin-bottom: 15px;
}

.layer-items {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.layer-item {
    background: rgba(212, 175, 55, 0.1);
    border: 1px solid rgba(212, 175, 55, 0.3);
    border-radius: 15px;
    padding: 5px 12px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.application-layer {
    border-left: 4px solid #00ff00;
}

.cognition-layer {
    border-left: 4px solid #00ffff;
}

.encoding-layer {
    border-left: 4px solid #d4af37;
}

.foundation-layer {
    border-left: 4px solid #ff4500;
}

.tech-stack {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.tech-category {
    background: rgba(26, 31, 46, 0.6);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 20px;
}

.tech-category h4 {
    color: var(--accent-cyan);
    font-size: 1.1rem;
    margin-bottom: 15px;
}

.tech-category ul {
    list-style: none;
    padding: 0;
}

.tech-category li {
    color: var(--text-secondary);
    margin-bottom: 8px;
    padding-left: 15px;
    position: relative;
}

.tech-category li::before {
    content: '▶';
    position: absolute;
    left: 0;
    color: var(--accent-gold);
    font-size: 0.8rem;
}

/* 应用案例 */
.application-cases {
    padding: 100px 0;
    background: var(--secondary-bg);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-top: 60px;
}

.case-card {
    background: rgba(26, 31, 46, 0.8);
    border: 1px solid var(--border-color);
    border-radius: 15px;
    padding: 30px;
    backdrop-filter: blur(10px);
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.case-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(212, 175, 55, 0.1), transparent);
    transition: left 0.5s ease;
}

.case-card:hover::before {
    left: 100%;
}

.case-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-gold);
    box-shadow: 0 15px 35px rgba(212, 175, 55, 0.2);
}

.case-icon {
    font-size: 3rem;
    margin-bottom: 20px;
    display: block;
    position: relative;
    z-index: 1;
}

.case-card h3 {
    color: var(--accent-gold);
    font-size: 1.3rem;
    margin-bottom: 15px;
    position: relative;
    z-index: 1;
}

.case-card p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 20px;
    position: relative;
    z-index: 1;
}

.case-features {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
    position: relative;
    z-index: 1;
}

.feature-tag {
    background: rgba(212, 175, 55, 0.2);
    border: 1px solid rgba(212, 175, 55, 0.4);
    border-radius: 15px;
    padding: 4px 10px;
    font-size: 0.8rem;
    color: var(--accent-gold);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .tech-hero .hero-title {
        font-size: 2.5rem;
    }
    
    .encoding-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .algorithm-grid {
        grid-template-columns: 1fr;
    }
    
    .performance-grid {
        grid-template-columns: 1fr;
    }
    
    .architecture-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .tech-stack {
        grid-template-columns: 1fr;
    }
    
    .cases-grid {
        grid-template-columns: 1fr;
    }
    
    .table-header,
    .table-row {
        grid-template-columns: 1fr;
    }
    
    .table-header {
        display: none;
    }
    
    .table-row {
        margin-bottom: 20px;
        border-radius: 10px;
        overflow: hidden;
    }
    
    .cell {
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        justify-content: flex-start;
        padding-left: 20px;
    }
    
    .cell:last-child {
        border-bottom: none;
    }
    
    .cell::before {
        content: attr(data-label) ': ';
        font-weight: 600;
        color: var(--accent-gold);
        margin-right: 10px;
    }
}

@media (max-width: 480px) {
    .tech-hero .hero-title {
        font-size: 2rem;
    }
    
    .tech-hero .hero-subtitle {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .algorithm-card,
    .performance-card,
    .case-card {
        padding: 20px;
    }
    
    .code-block {
        padding: 15px;
    }
    
    .code-block pre {
        font-size: 0.8rem;
    }
}