:root {
    --dark-bg: #1d0d1d; /* 深紫色背景 */
    --main-bg: #2d132d; /* 稍浅的紫色背景 */
    --text-light: #f0f0f0; /* 白色文字 */
    --neon-green: #00ff00; /* 霓虹绿高光 */
    --neon-orange: #ff7f00; /* 霓虹橙高光 */
    --border-color: #4f314f; /* 边框颜色 */
    --font-display: 'Orbitron', sans-serif;
    --font-body: 'Roboto Mono', monospace;
    --gap-large: 4rem;
    --card-transition: transform 0.4s ease-in-out, box-shadow 0.4s ease-in-out;
}

/* 全局重置 */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--dark-bg);
    color: var(--text-light);
    font-family: var(--font-body);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* 粒子背景 canvas */
#particle-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    opacity: 0.5;
}

a {
    text-decoration: none;
    color: var(--neon-green);
    transition: color 0.3s ease;
}

a:hover {
    color: var(--neon-orange);
}

.container {
    max-width: 1300px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* 头部 */
.page-header {
    background: rgba(29, 13, 29, 0.8);
    backdrop-filter: blur(10px);
    padding: 2.5rem 0;
    border-bottom: 2px solid var(--border-color);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.site-logo {
    font-family: var(--font-display);
    font-size: 2.2rem;
    letter-spacing: 1px;
    color: var(--text-light);
    text-shadow: 0 0 10px var(--neon-green);
}

.site-logo span {
    color: var(--neon-orange);
    font-size: 1.5rem;
    position: relative;
    bottom: 5px;
}

.search-container {
    position: relative;
}

.search-input {
    background: var(--main-bg);
    border: 1px solid var(--border-color);
    color: var(--text-light);
    padding: 0.8rem 1.2rem;
    border-radius: 5px;
    font-family: var(--font-body);
    font-size: 1rem;
    width: 250px;
    outline: none;
    box-shadow: inset 0 0 5px rgba(0, 0, 0, 0.5);
    transition: all 0.3s ease;
}

.search-input:focus {
    border-color: var(--neon-green);
    box-shadow: 0 0 15px rgba(0, 255, 0, 0.5);
}

.search-btn {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-light);
    font-size: 1.2rem;
    transition: color 0.2s ease;
}

.search-btn:hover {
    color: var(--neon-orange);
}

/* 主要内容 */
.main-content {
    padding-top: var(--gap-large);
    padding-bottom: var(--gap-large);
}

.site-intro {
    background: rgba(45, 19, 45, 0.8);
    backdrop-filter: blur(5px);
    padding: 3rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
    margin-bottom: var(--gap-large);
}

.section-headline {
    font-family: var(--font-display);
    font-size: 2rem;
    margin-bottom: 2rem;
    color: var(--text-light);
    text-shadow: 0 0 8px var(--neon-orange);
    border-bottom: 2px solid var(--neon-orange);
    padding-bottom: 0.5rem;
    display: inline-block;
}

/* 类别列表 */
.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin-bottom: var(--gap-large);
}

.category-card {
    background: var(--main-bg);
    border: 1px solid var(--border-color);
    padding: 1.5rem;
    border-radius: 8px;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
    position: relative;
    overflow: hidden;
}

.category-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, rgba(0, 255, 0, 0.1), rgba(255, 127, 0, 0.1));
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

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

.category-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 255, 0, 0.5);
}

.category-card a {
    font-family: var(--font-display);
    font-size: 1.2rem;
    color: var(--text-light);
    text-shadow: 0 0 5px var(--neon-green);
}

/* 游戏列表 - 错落布局 */
.game-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2.5rem;
}

.game-card-wrapper {
    display: block;
    cursor: pointer;
    position: relative;
    transform: rotate(-1deg); /* 初始轻微倾斜 */
    transition: transform 0.5s ease;
}

.game-card-wrapper:nth-child(even) {
    transform: rotate(1deg); /* 偶数卡片反向倾斜 */
}

.game-card-wrapper:hover {
    transform: translateY(-10px) rotate(0deg) scale(1.05);
    z-index: 10;
}

.game-card {
    background: var(--main-bg);
    border: 1px solid var(--border-color);
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
    position: relative;
    overflow: hidden;

    /* 霓虹边框效果 */
    border-image: linear-gradient(45deg, var(--neon-green), var(--neon-orange)) 1;
    border-width: 2px;
    border-style: solid;
}

.card-image-box {
    width: 100%;
    height: 200px;
    background-color: #2a2a47; /* Placeholder */
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 1.5rem;
    overflow: hidden;
    border-radius: 4px;
}

.card-image-box img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.game-card-wrapper:hover img {
    transform: scale(1.1);
}

.card-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    color: var(--neon-green);
    text-shadow: 0 0 5px rgba(0, 255, 0, 0.5);
    margin-bottom: 0.5rem;
}

.card-description {
    color: #b0c0d0;
    font-size: 0.95rem;
    margin-bottom: 1rem;
}

.card-meta-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    font-size: 0.85rem;
}

.meta-tag-item {
    background-color: #2a2a47;
    color: #b0c0d0;
    padding: 0.3rem 0.7rem;
    border-radius: 2px;
    border: 1px solid var(--border-color);
}

/* 底部 */
.page-footer {
    background: rgba(29, 13, 29, 0.8);
    backdrop-filter: blur(10px);
    padding: 2.5rem 0;
    margin-top: var(--gap-large);
    border-top: 2px solid var(--border-color);
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.5);
    text-align: center;
}

.footer-nav {
    display: flex;
    justify-content: center;
    gap: 2.5rem;
    margin-bottom: 1rem;
}

.footer-nav a {
    color: var(--text-light);
    font-family: var(--font-display);
    text-transform: uppercase;
}

.footer-text {
    color: #777;
    font-size: 0.8rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 1.5rem;
    }

    .search-container {
        width: 100%;
    }

    .search-input {
        width: 100%;
    }

    .site-intro {
        padding: 2rem;
    }

    .section-headline {
        font-size: 1.8rem;
    }

    .game-card-wrapper {
        transform: rotate(0deg) !important;
    }

    .game-card-wrapper:nth-child(even) {
        transform: rotate(0deg) !important;
    }

    .game-card-wrapper:hover {
        transform: translateY(0px) rotate(0deg) scale(1.05);
    }

    .footer-nav {
        flex-direction: column;
        gap: 1rem;
    }
}