/* 全局样式 */
:root {
    --cyber-bg: #0a0a12;
    --cyber-dark: #12121e;
    --cyber-accent: #00f0ff;
    --cyber-accent2: #ff00a0;
    --cyber-text: #ffffff;
    --cyber-text-secondary: #b0b0b0;
    --cyber-border: #2a2a3a;
    --cyber-card: #1a1a2e;
    --cyber-card-hover: #1e1e35;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Courier New', monospace;
    background-color: var(--cyber-bg);
    color: var(--cyber-text);
    line-height: 1.6;
    overflow-x: hidden;
}

/* 网格背景 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(0, 240, 255, 0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 240, 255, 0.1) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
    z-index: -1;
}

/* 头部样式 */
.cyber-header {
    background-color: var(--cyber-dark);
    border-bottom: 1px solid var(--cyber-accent);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 0 20px rgba(0, 240, 255, 0.3);
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    flex-direction: column;
}

.logo-text {
    font-size: 24px;
    font-weight: bold;
    color: var(--cyber-accent);
    text-shadow: 0 0 10px var(--cyber-accent);
}

.logo-subtext {
    font-size: 12px;
    color: var(--cyber-text-secondary);
    margin-top: 2px;
}

.cyber-nav {
    display: flex;
    gap: 20px;
}

.nav-link {
    color: var(--cyber-text);
    text-decoration: none;
    padding: 8px 16px;
    border-radius: 4px;
    transition: all 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: var(--cyber-accent);
    background-color: rgba(0, 240, 255, 0.1);
    box-shadow: 0 0 10px rgba(0, 240, 255, 0.5);
}

.nav-link.active {
    color: var(--cyber-accent);
    border-bottom: 2px solid var(--cyber-accent);
}

.search-box {
    position: relative;
}

.search-input {
    background-color: var(--cyber-card);
    border: 1px solid var(--cyber-border);
    border-radius: 20px;
    padding: 8px 40px 8px 16px;
    color: var(--cyber-text);
    font-family: 'Courier New', monospace;
    transition: all 0.3s ease;
}

.search-input:focus {
    outline: none;
    border-color: var(--cyber-accent);
    box-shadow: 0 0 10px rgba(0, 240, 255, 0.5);
}

.search-btn {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--cyber-accent);
    cursor: pointer;
    padding: 4px;
    transition: all 0.3s ease;
}

.search-btn:hover {
    color: var(--cyber-accent2);
    text-shadow: 0 0 10px var(--cyber-accent2);
}

/* 英雄区域 */
.hero-section {
    padding: 100px 20px;
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 40px;
}

.hero-content {
    flex: 1;
}

.hero-title {
    font-size: 48px;
    font-weight: bold;
    margin-bottom: 20px;
    line-height: 1.2;
}

.cyber-text {
    color: var(--cyber-accent);
    text-shadow: 0 0 20px var(--cyber-accent);
}

.cyber-subtitle {
    color: var(--cyber-text);
}

.hero-description {
    font-size: 18px;
    color: var(--cyber-text-secondary);
    margin-bottom: 30px;
    max-width: 600px;
}

.hero-buttons {
    display: flex;
    gap: 20px;
}

.btn-primary {
    background-color: var(--cyber-accent);
    color: var(--cyber-bg);
    padding: 12px 24px;
    border-radius: 4px;
    text-decoration: none;
    font-weight: bold;
    transition: all 0.3s ease;
    border: 1px solid var(--cyber-accent);
}

.btn-primary:hover {
    background-color: transparent;
    color: var(--cyber-accent);
    box-shadow: 0 0 20px rgba(0, 240, 255, 0.5);
}

.btn-secondary {
    background-color: transparent;
    color: var(--cyber-accent);
    padding: 12px 24px;
    border-radius: 4px;
    text-decoration: none;
    font-weight: bold;
    transition: all 0.3s ease;
    border: 1px solid var(--cyber-accent);
}

.btn-secondary:hover {
    background-color: var(--cyber-accent);
    color: var(--cyber-bg);
    box-shadow: 0 0 20px rgba(0, 240, 255, 0.5);
}

.hero-visual {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.skill-animation {
    position: relative;
    width: 300px;
    height: 300px;
}

.skill-node {
    position: absolute;
    width: 20px;
    height: 20px;
    background-color: var(--cyber-accent);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--cyber-accent);
    animation: pulse 2s infinite;
}

.skill-node:nth-child(1) {
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: 0s;
}

.skill-node:nth-child(2) {
    top: 20%;
    left: 30%;
    animation-delay: 0.3s;
}

.skill-node:nth-child(3) {
    top: 70%;
    left: 70%;
    animation-delay: 0.6s;
}

.skill-node:nth-child(4) {
    top: 30%;
    left: 80%;
    animation-delay: 0.9s;
}

.skill-node:nth-child(5) {
    top: 80%;
    left: 20%;
    animation-delay: 1.2s;
}

@keyframes pulse {
    0% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.5);
        opacity: 0.7;
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

/* 统计区域 */
.stats-section {
    background-color: var(--cyber-dark);
    padding: 60px 20px;
    border-top: 1px solid var(--cyber-border);
    border-bottom: 1px solid var(--cyber-border);
}

.stats-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    text-align: center;
}

.stat-item {
    position: relative;
    padding: 20px;
    border-radius: 8px;
    background-color: var(--cyber-card);
    transition: all 0.3s ease;
    border: 1px solid var(--cyber-border);
}

.stat-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 240, 255, 0.2);
    border-color: var(--cyber-accent);
}

.stat-number {
    font-size: 36px;
    font-weight: bold;
    color: var(--cyber-accent);
    text-shadow: 0 0 10px var(--cyber-accent);
    margin-bottom: 10px;
}

.stat-label {
    font-size: 14px;
    color: var(--cyber-text-secondary);
}

/* 通用部分样式 */
.section-header {
    text-align: center;
    margin-bottom: 40px;
}

.section-title {
    font-size: 32px;
    font-weight: bold;
    margin-bottom: 10px;
}

.cyber-accent {
    color: var(--cyber-accent);
    text-shadow: 0 0 10px var(--cyber-accent);
}

.section-description {
    font-size: 16px;
    color: var(--cyber-text-secondary);
}

/* 热门技能 */
.trending-section {
    padding: 80px 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.trending-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.skill-card {
    background-color: var(--cyber-card);
    border-radius: 8px;
    padding: 24px;
    transition: all 0.3s ease;
    border: 1px solid var(--cyber-border);
    position: relative;
    overflow: hidden;
}

.skill-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--cyber-accent), var(--cyber-accent2));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.skill-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 240, 255, 0.2);
    border-color: var(--cyber-accent);
}

.skill-card:hover::before {
    transform: scaleX(1);
}

.skill-card-link {
    text-decoration: none;
    color: inherit;
    display: block;
}

.skill-card-link:hover {
    text-decoration: none;
}

.skill-icon {
    width: 64px;
    height: 64px;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: rgba(0, 240, 255, 0.1);
    border-radius: 12px;
    margin-bottom: 20px;
    transition: all 0.3s ease;
}

.skill-card:hover .skill-icon {
    background-color: rgba(0, 240, 255, 0.2);
    box-shadow: 0 0 20px rgba(0, 240, 255, 0.5);
}

.skill-icon svg {
    fill: var(--cyber-accent);
    transition: all 0.3s ease;
}

.skill-card:hover .skill-icon svg {
    fill: var(--cyber-accent2);
    transform: scale(1.1);
}

.skill-title {
    font-size: 18px;
    font-weight: bold;
    margin-bottom: 10px;
    color: var(--cyber-text);
}

.skill-description {
    font-size: 14px;
    color: var(--cyber-text-secondary);
    margin-bottom: 20px;
    line-height: 1.4;
}

.skill-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    font-size: 12px;
    color: var(--cyber-text-secondary);
}

.skill-rating {
    color: #ffd700;
}

.skill-downloads {
    color: var(--cyber-accent);
}

.skill-install {
    width: 100%;
    padding: 10px;
    background-color: var(--cyber-accent);
    color: var(--cyber-bg);
    border: none;
    border-radius: 4px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: 'Courier New', monospace;
}

.skill-install:hover {
    background-color: transparent;
    color: var(--cyber-accent);
    border: 1px solid var(--cyber-accent);
    box-shadow: 0 0 10px rgba(0, 240, 255, 0.5);
}

/* 分类区域 */
.categories-section {
    padding: 80px 20px;
    background-color: var(--cyber-dark);
    border-top: 1px solid var(--cyber-border);
    border-bottom: 1px solid var(--cyber-border);
}

.categories-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
}

.category-card {
    background-color: var(--cyber-card);
    border-radius: 8px;
    padding: 30px;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid var(--cyber-border);
    cursor: pointer;
}

.category-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 240, 255, 0.2);
    border-color: var(--cyber-accent);
}

.category-icon {
    width: 64px;
    height: 64px;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: rgba(0, 240, 255, 0.1);
    border-radius: 12px;
    margin: 0 auto 20px;
    transition: all 0.3s ease;
}

.category-card:hover .category-icon {
    background-color: rgba(0, 240, 255, 0.2);
    box-shadow: 0 0 20px rgba(0, 240, 255, 0.5);
}

.category-icon svg {
    fill: var(--cyber-accent);
    transition: all 0.3s ease;
}

.category-card:hover .category-icon svg {
    fill: var(--cyber-accent2);
    transform: scale(1.1);
}

.category-title {
    font-size: 18px;
    font-weight: bold;
    margin-bottom: 10px;
    color: var(--cyber-text);
}

.category-count {
    font-size: 14px;
    color: var(--cyber-text-secondary);
}

/* 技能库 */
.skills-section {
    padding: 80px 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.skills-filter {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 8px 16px;
    background-color: var(--cyber-card);
    color: var(--cyber-text);
    border: 1px solid var(--cyber-border);
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: 'Courier New', monospace;
}

.filter-btn:hover {
    color: var(--cyber-accent);
    border-color: var(--cyber-accent);
    box-shadow: 0 0 10px rgba(0, 240, 255, 0.5);
}

.filter-btn.active {
    background-color: var(--cyber-accent);
    color: var(--cyber-bg);
    border-color: var(--cyber-accent);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

/* 关于区域 */
.about-section {
    padding: 80px 20px;
    background-color: var(--cyber-dark);
    border-top: 1px solid var(--cyber-border);
    border-bottom: 1px solid var(--cyber-border);
}

.about-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    gap: 60px;
    align-items: center;
}

.about-text {
    flex: 1;
}

.about-text p {
    margin-bottom: 20px;
    font-size: 16px;
    color: var(--cyber-text-secondary);
    line-height: 1.6;
}

.about-stats {
    flex: 1;
    background-color: var(--cyber-card);
    padding: 30px;
    border-radius: 8px;
    border: 1px solid var(--cyber-border);
}

/* 页脚 */
.cyber-footer {
    background-color: var(--cyber-dark);
    padding: 60px 20px 30px;
    border-top: 1px solid var(--cyber-accent);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-title {
    font-size: 24px;
    font-weight: bold;
    color: var(--cyber-accent);
    text-shadow: 0 0 10px var(--cyber-accent);
    margin-bottom: 10px;
}

.footer-description {
    font-size: 14px;
    color: var(--cyber-text-secondary);
}

.footer-subtitle {
    font-size: 16px;
    font-weight: bold;
    color: var(--cyber-text);
    margin-bottom: 15px;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: var(--cyber-text-secondary);
    text-decoration: none;
    transition: all 0.3s ease;
}

.footer-links a:hover {
    color: var(--cyber-accent);
    text-shadow: 0 0 10px var(--cyber-accent);
}

.footer-bottom {
    max-width: 1200px;
    margin: 0 auto;
    padding-top: 20px;
    border-top: 1px solid var(--cyber-border);
    text-align: center;
    font-size: 14px;
    color: var(--cyber-text-secondary);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }

    .cyber-nav {
        flex-wrap: wrap;
        justify-content: center;
    }

    .hero-section {
        flex-direction: column;
        text-align: center;
    }

    .hero-title {
        font-size: 36px;
    }

    .about-content {
        flex-direction: column;
        text-align: center;
    }

    .stats-container {
        grid-template-columns: repeat(2, 1fr);
    }

    .trending-grid,
    .skills-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 28px;
    }

    .stats-container {
        grid-template-columns: 1fr;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn-primary,
    .btn-secondary {
        width: 100%;
        text-align: center;
    }
}