/* MTGAME 科幻风格样式 */
:root {
    --primary-color: #0a0a1a;
    --secondary-color: #1a1a2e;
    --accent-color: #00eeff;
    --accent-glow: 0 0 10px rgba(0, 238, 255, 0.7);
    --text-primary: #ffffff;
    --text-secondary: #a0a0c0;
    --danger-color: #ff2a6d;
    --success-color: #05d9e8;
    --card-bg: rgba(26, 26, 46, 0.8);
    --card-border: rgba(0, 238, 255, 0.3);
    --neon-glow: 0 0 15px var(--accent-color);
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--primary-color);
    background-image: 
        radial-gradient(circle at 20% 30%, rgba(0, 238, 255, 0.1) 0%, transparent 20%),
        radial-gradient(circle at 80% 80%, rgba(255, 42, 109, 0.1) 0%, transparent 20%);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden; 
	position: relative;
}

/* 星空背景 */
.stars {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background-image: 
        radial-gradient(2px 2px at 20px 30px, #eee, transparent),
        radial-gradient(2px 2px at 40px 70px, #fff, transparent),
        radial-gradient(3px 3px at 90px 40px, #ddd, transparent);
    background-repeat: repeat;
    background-size: 200px 200px;
    animation: twinkle 5s infinite alternate;
}

@keyframes twinkle {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 1; }
}

/* 头部样式 */
.header {
    background: linear-gradient(to bottom, rgba(10, 10, 26, 0.95), rgba(10, 10, 26, 0.8));
    backdrop-filter: blur(5px); /* 从10px降低到5px */
    border-bottom: 1px solid var(--accent-color);
    box-shadow: var(--accent-glow);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 1rem 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

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

.logo {
    font-size: 2rem;
    font-weight: bold;
    background: linear-gradient(45deg, var(--accent-color), #ff2a6d);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-transform: uppercase;
    letter-spacing: 2px;
    text-shadow: 0 0 10px rgba(0, 238, 255, 0.5);
}

/* 导航菜单 */
.nav-menu {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    color: var(--text-primary);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.nav-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: -100%;
    width: 100%;
    height: 2px;
    background: var(--accent-color);
    transition: left 0.3s ease;
}

.nav-link:hover::before {
    left: 0;
}

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

.btn-login {
    background: linear-gradient(45deg, var(--accent-color), #00a8ff);
    color: var(--primary-color);
    border: none;
    padding: 0.5rem 1.5rem;
    border-radius: 25px;
    cursor: pointer;
    font-weight: bold;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 238, 255, 0.4);
}

/* hero区域 */
.hero {
    text-align: center;
    padding: 2rem 0 1rem;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 300px;
    height: 260px;
    background: radial-gradient(circle, rgba(0, 238, 255, 0.1) 0%, transparent 70%);
    z-index: -1;
}

.hero h1 {
    /* 字体大小: 2.5rem (约40px) */
    font-size: 3rem;
    
    /* 底部外边距: 1倍字体大小的间距 */
    margin-bottom: 0.5rem;
    
    /* 渐变背景: 从白色到主题强调色的45度渐变 */
    background: linear-gradient(45deg, #fff, var(--accent-color));
    
    /* 文字裁剪: 将背景裁剪为文字形状(仅Webkit内核浏览器) */
    -webkit-background-clip: text;
    
    /* 文字裁剪: 将背景裁剪为文字形状(标准属性) */
    background-clip: text;
    
    /* 文字颜色: 透明, 以显示背景渐变 */
    color: transparent;
    
    /* 文字阴影: 发光效果, 颜色为青色, 模糊半径20px, 透明度50% */
    text-shadow: 0 0 20px rgba(0, 238, 255, 0.5);
    
    /* 字符间距: 3px, 增加字母间距增强科技感 */
    letter-spacing: 3px;
}

/* 副标题样式 */
.hero-subtitle {
    /* 字体大小: 1.2rem (约19.2px) */
    font-size: 1.3rem;
    
    /* 文字颜色: 使用次要文字颜色变量 */
    color: var(--text-secondary);
    
    /* 最大宽度: 900px, 限制文本行宽提高可读性 */
    max-width: 900px;
    
    /* 外边距: 上0 左右自动 下2rem, 实现水平居中 */
    margin: 0 auto 1.5rem;
    
    /* 行高: 1.8倍字体大小, 增加行间距提高可读性 */
    line-height: 1.5;
}

/* 外部链接按钮 - 紧凑布局 */
.external-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); /* 减小最小宽度 */
    gap: 1rem; /* 减少间距 */
    margin-bottom: 2rem;
}

.ext-link {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 10px; /* 减小圆角 */
    padding: 0.75rem 1rem; /* 进一步减少内边距 */
    text-decoration: none;
    color: var(--text-primary);
    transition: all 0.3s ease;
    text-align: center;
    /* 移除不必要的模糊效果 */
    /* backdrop-filter: blur(5px); */ /* 注释掉这行 */
    position: relative;
    overflow: hidden;
    min-height: 100px; /* 更小的高度 */
}

.ext-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 238, 255, 0.1), transparent);
    transition: left 0.5s ease;
}

.ext-link:hover::before {
    left: 100%;
}

.ext-link:hover {
    transform: translateY(-2px);
    border-color: var(--accent-color);
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.2), var(--accent-glow);
}

.ext-link i {
    font-size: 1.25rem; /* 更小的图标 */
    margin-bottom: 0.25rem; /* 更小的间距 */
    color: var(--accent-color);
}

.ext-link h3 {
    font-size: 0.9rem; /* 更小的标题 */
    margin-bottom: 0.25rem;
    font-weight: 600;
}

.ext-link p {
    font-size: 0.75rem; /* 更小的描述文字 */
    line-height: 1.2;
    margin: 0;
    opacity: 0.8;
}

/* 游戏卡片网格 */
.games-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.game-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 15px;
    overflow: hidden;
    transition: all 0.2s ease; /* 0.3-0.2减少动画时间 */
    /* 移除不必要的模糊效果 */
    /* backdrop-filter: blur(5px); */ /* 注释掉这行 */
    position: relative;
}

.game-card:hover {
    transform: translateY(-5px);  /* 减少移动距离-10--5 */
    border-color: var(--accent-color);
    /*box-shadow: 0 15px 30px rgba(0, 0, 0, 0.4), var(--accent-glow);*/
	box-shadow: 
        0 8px 20px rgba(0, 0, 0, 0.3), 0 0 10px var(--accent-color); /* 减少阴影层数和模糊半径 */
}

.game-card-header {
    position: relative;
    height: 200px;
    overflow: hidden;
}

/* 轮播样式 */
.carousel {
    position: relative;
    width: 100%;
    height: 100%;
}

.carousel-inner {
    display: flex;
    width: 100%;
    height: 100%;
    transition: transform 0.5s ease;
}

.carousel-slide {
    min-width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
}

.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.5);
    border: none;
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    z-index: 2;
    transition: all 0.3s ease;
}

.carousel-btn:hover {
    background: rgba(0, 238, 255, 0.8);
}

.carousel-prev {
    left: 10px;
}

.carousel-next {
    right: 10px;
}

.carousel-dots {
    position: absolute;
    bottom: 10px;
    left: 0;
    right: 0;
    display: flex;
    justify-content: center;
    gap: 8px;
}

.carousel-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    border: none;
    cursor: pointer;
    padding: 0;
    transition: all 0.3s ease;
}

.carousel-dot.active {
    background: var(--accent-color);
    transform: scale(1.2);
}

.game-card-content {
    padding: 1.5rem;
}

.game-title {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--accent-color);
}

.game-desc {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-size: 0.9rem;
    line-height: 1.6;
}

.platform-tags {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.platform-tag {
    background: rgba(0, 238, 255, 0.1);
    color: var(--accent-color);
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.8rem;
    border: 1px solid var(--card-border);
}

/* 按钮样式 */
.btn-group {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.btn {
    flex: 1;
    min-width: 120px;
    padding: 0.8rem 1rem;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-weight: bold;
    text-decoration: none;
    text-align: center;
    transition: all 0.3s ease;
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 0.5px;
}

/* 本地下载 */
.btn-download {
  background: linear-gradient(45deg, #05d9e8, #00bfff) !important;
  color: #000 !important;
}

.btn-download:hover {
  box-shadow: 0 5px 15px rgba(5, 217, 232, 0.4) !important;
}

/* 网盘下载 */
.btn-baidu {
  background: linear-gradient(45deg, #4d6bff, #6a8cff) !important;
  color: #fff !important;
}
.btn-baidu:hover {
  box-shadow: 0 5px 15px rgba(77, 107, 255, 0.4) !important;
}

.btn-benefit {
    background: linear-gradient(45deg, var(--danger-color), #ff0055);
    color: #fff;
    width: 100%;
    margin-top: 0.5rem;
}

.btn-benefit:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255, 42, 109, 0.4);
}

.btn-benefit.disabled {
    background: #666;
    cursor: not-allowed;
    opacity: 0.6;
}

.btn-benefit.disabled:hover {
    transform: none;
    box-shadow: none;
}

/* 页脚 */
.footer {
    text-align: center;
    padding: 2rem 0;
    border-top: 1px solid rgba(0, 238, 255, 0.3);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav-menu {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .external-links {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: 0.75rem;
    }
    
    .ext-link {
        padding: 0.5rem 0.75rem;
        min-height: 82px;
    }
    
    .ext-link i {
        font-size: 1.1rem;
    }
    
    .ext-link h3 {
        font-size: 1.1rem;
    }
    
    .ext-link p {
        font-size: 0.9rem;
    }
    
    .games-grid {
        grid-template-columns: 1fr;
    }
    
    .btn {
        min-width: 100%;
    }
}

/* 管理员按钮 */
.admin-btn {
    background: linear-gradient(45deg, var(--danger-color), #ff5500);
    color: white;
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 1000;
    padding: 1rem 1.5rem;
    border-radius: 25px;
    box-shadow: 0 5px 15px rgba(255, 42, 109, 0.4);
}

/* 动画效果 */
@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(0, 238, 255, 0.7); }
    70% { box-shadow: 0 0 0 10px rgba(0, 238, 255, 0); }
    100% { box-shadow: 0 0 0 0 rgba(0, 238, 255, 0); }
}

.pulse {
    animation: pulse 2s infinite;
}
/* === 全局移动端汉堡按钮（脱离 header） === */
.mobile-hamburger {
  display: none;
  position: fixed;
  top: 12px;
  right: 16px;
  z-index: 10000;
  width: 40px;
  height: 40px;
  background: rgba(10, 10, 26, 0.8);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  color: var(--accent-color);
  font-size: 1.4rem;
  cursor: pointer;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

/* 移动端显示汉堡按钮 */
@media (max-width: 768px) {
  .mobile-hamburger {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  /* 隐藏桌面导航 */
  .desktop-nav {
    display: none !important;
  }

  /* 确保 header 不干扰 */
  .header {
    padding: 0.3rem 0;
    min-height: 48px;
  }
}

/* === 移动菜单（保持不变，但确保 z-index 足够高） === */
.mobile-nav-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
  z-index: 9999;
  display: flex;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.mobile-nav-overlay.active {
  opacity: 1;
  visibility: visible;
}

.mobile-nav-menu {
  position: absolute;
  top: 0;
  right: 0;
  width: 280px;
  height: 100%;
  background: var(--card-bg);
  border-left: 1px solid var(--card-border);
  padding: 20px;
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform 0.3s ease;
}

.mobile-nav-overlay.active .mobile-nav-menu {
  transform: translateX(0);
}

.mobile-nav-menu .nav-link,
.mobile-nav-menu .btn-login {
  display: block;
  padding: 12px 0;
  font-size: 1.1rem;
  color: #fff;
  text-decoration: none;
  margin: 8px 0;
}

.mobile-nav-menu .close-btn {
  position: absolute;
  top: 15px;
  right: 15px;
  background: none;
  border: none;
  font-size: 1.8rem;
  color: #aaa;
  cursor: pointer;
}

.mobile-nav-menu .user-info {
  margin-top: auto;
  padding-top: 20px;
  border-top: 1px solid var(--card-border);
}
/* === GPU性能优化 === */
/* 减少模糊效果使用 */
@media (max-width: 1024px) {
    .header {
        backdrop-filter: blur(3px);
    }
    
    .ext-link, .game-card {
        backdrop-filter: none;
    }
}

/* 简化阴影效果 */
.neon-text {
    text-shadow: 0 0 8px var(--accent-color);
}

.game-card:hover {
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3), 0 0 8px var(--accent-color);
}

/* 优化变换动画 */
.game-card, .ext-link, .quick-link {
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    will-change: transform;
    transform: translateZ(0);
    backface-visibility: hidden;
}

/* 减少运动偏好设置 */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* 移动端性能优化 */
@media (max-width: 768px) {
    .game-card:hover {
        transform: translateY(-3px);
    }
    
    .stars {
        animation: none;
        opacity: 0.5;
    }
}

/* 图片懒加载优化 */
.carousel-slide {
    transform: translateZ(0);
}

/* 禁用不必要的hover效果在触摸设备 */
@media (hover: none) and (pointer: coarse) {
    .game-card:hover, .ext-link:hover, .quick-link:hover {
        transform: none !important;
        box-shadow: none !important;
    }
}