/* 全局样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #0d0f1f;
}

/* 容器样式 */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* 头部样式：电竞风 */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(13, 15, 31, 0.9);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(0, 216, 255, 0.18);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.35);
}

.site-header::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: -1px;
    height: 1px;
    background: linear-gradient(to right, transparent, rgba(0, 216, 255, 0.6), rgba(74, 0, 224, 0.6), transparent);
    pointer-events: none;
}

.header-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: nowrap;
    min-height: 64px;
}

/* LOGO样式 */
.logo {
    flex: 0 0 auto;
    transition: transform 0.3s ease, filter 0.3s ease;
}

.logo:hover {
    transform: scale(1.03);
    filter: drop-shadow(0 0 12px rgba(0, 216, 255, 0.35));
}

.logo img {
    display: block;
    max-width: 100%;
    height: auto;
}

/* 导航菜单样式 */
.main-nav {
    flex: 1 1 auto;
    margin: 0 22px;
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: #00d8ff;
    font-size: 24px;
    cursor: pointer;
    padding: 5px;
    transition: color 0.25s ease;
}

.mobile-menu-toggle:hover {
    color: #fff;
}

.nav-menu {
    display: flex;
    list-style: none;
    justify-content: center;
    align-items: center;
}

.nav-menu li {
    position: relative;
    margin: 0 4px;
}

.nav-menu li > a {
    display: flex;
    align-items: center;
    gap: 6px;
    color: #c8cde0;
    text-decoration: none;
    padding: 10px 16px;
    font-size: 15px;
    font-weight: 500;
    border-radius: 8px;
    transition: color 0.25s ease, background 0.25s ease, transform 0.25s ease;
    position: relative;
}

.nav-menu li > a i {
    font-size: 14px;
    transition: transform 0.25s ease;
}

/* 导航图标 */
.nav-ico {
    font-size: 15px;
    flex-shrink: 0;
}

.nav-ico-home {
    color: #fff;
}

.nav-ico-cyan {
    color: #00d8ff;
    text-shadow: 0 0 8px rgba(0, 216, 255, 0.45);
}

.nav-ico-gold {
    color: #ffd76b;
    text-shadow: 0 0 8px rgba(255, 215, 107, 0.4);
}

.nav-ico-red {
    color: #ff6b6b;
    text-shadow: 0 0 8px rgba(255, 107, 107, 0.4);
}

.nav-menu li > a:hover .nav-ico-home {
    color: #fff;
}

.nav-menu li > a:hover {
    color: #00d8ff;
    background: rgba(0, 216, 255, 0.08);
}

.nav-menu li > a:hover i.fa-chevron-down {
    transform: rotate(180deg);
}

/* 首页按钮特殊处理 */
.nav-menu li:first-child > a {
    color: #fff;
}

/* 下拉菜单样式：电竞风 */
.dropdown-menu {
    position: absolute;
    top: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%) translateY(8px);
    background: linear-gradient(180deg, #151829 0%, #0d0f1f 100%);
    min-width: 180px;
    border: 1px solid rgba(0, 216, 255, 0.22);
    border-radius: 10px;
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5), 0 0 20px rgba(0, 216, 255, 0.08);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s;
    z-index: 100;
    padding: 6px;
}

.dropdown-menu::before {
    content: '';
    position: absolute;
    top: -5px;
    left: 50%;
    transform: translateX(-50%) rotate(45deg);
    width: 10px;
    height: 10px;
    background: #151829;
    border-top: 1px solid rgba(0, 216, 255, 0.22);
    border-left: 1px solid rgba(0, 216, 255, 0.22);
}

.has-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.dropdown-menu li {
    margin: 0;
    width: 100%;
}

.dropdown-menu a {
    display: flex;
    align-items: center;
    gap: 7px;
    padding: 10px 12px;
    color: #a8b0c8;
    font-size: 14px;
    border-radius: 6px;
    transition: color 0.2s ease, background 0.2s ease, padding 0.2s ease;
}

.dropdown-menu a i {
    font-size: 13px;
    color: #00d8ff;
}

.dropdown-menu a .nav-sub-ico {
    color: #00d8ff;
    text-shadow: 0 0 6px rgba(0, 216, 255, 0.4);
}

.dropdown-menu a:hover {
    color: #00d8ff;
    background: rgba(0, 216, 255, 0.08);
    padding-left: 16px;
}

/* 搜索框样式 */
.search-box {
    flex: 0 0 auto;
    position: relative;
}

.search-box form {
    display: flex;
    align-items: center;
}

.search-box input {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(0, 216, 255, 0.2);
    border-radius: 20px;
    padding: 8px 40px 8px 16px;
    color: #fff;
    width: 210px;
    font-size: 14px;
    transition: border-color 0.25s ease, background 0.25s ease, width 0.25s ease, box-shadow 0.25s ease;
}

.search-box input::placeholder {
    color: rgba(255, 255, 255, 0.4);
}

.search-box input:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(0, 216, 255, 0.55);
    width: 260px;
    box-shadow: 0 0 14px rgba(0, 216, 255, 0.2);
}

.search-box button {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: #00d8ff;
    cursor: pointer;
    font-size: 15px;
    transition: color 0.25s ease, transform 0.25s ease;
}

.search-box button:hover {
    color: #fff;
    transform: translateY(-50%) scale(1.1);
}

/* 响应式设计 */
@media (max-width: 991px) {
    .header-wrapper {
        flex-wrap: wrap;
    }
    
    .logo {
        flex: 0 0 auto;
    }
    
    .mobile-menu-toggle {
        display: block;
        margin-left: auto;
    }
    
    .main-nav {
        flex: 0 0 100%;
        order: 3;
        margin: 0;
    }
    
    .nav-menu {
        display: none;
        flex-direction: column;
        width: 100%;
        padding: 8px;
        background: rgba(13, 15, 31, 0.96);
        border: 1px solid rgba(0, 216, 255, 0.18);
        border-radius: 10px;
        margin: 8px 0 10px;
        box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
        backdrop-filter: blur(12px);
        animation: slideDown 0.25s ease-out;
    }

    .nav-menu.active {
        display: flex;
    }

    @keyframes slideDown {
        from {
            opacity: 0;
            transform: translateY(-8px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }
    
    .nav-menu li {
        margin: 0;
        width: 100%;
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }

    .nav-menu li:last-child {
        border-bottom: none;
    }

    .nav-menu li > a {
        padding: 14px 12px;
        border-radius: 6px;
        justify-content: space-between;
    }

    .nav-menu li > a:hover {
        background: rgba(0, 216, 255, 0.08);
        transform: none;
    }
    
    .dropdown-menu {
        position: static;
        display: none;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        background: rgba(0, 0, 0, 0.2);
        border: none;
        border-left: 2px solid rgba(0, 216, 255, 0.25);
        border-radius: 0;
        padding: 4px;
        margin: 0 0 6px 12px;
        animation: slideDown 0.2s ease-out;
    }

    .dropdown-menu::before {
        display: none;
    }

    .show-dropdown .dropdown-menu {
        display: block;
    }

    .dropdown-menu li {
        border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    }

    .dropdown-menu a {
        padding: 11px 14px;
        font-size: 14px;
    }
    
    .search-box {
        margin-left: auto;
    }
    
    .search-box input {
        width: 150px;
    }
    
    .search-box input:focus {
        width: 180px;
    }
}

@media (max-width: 576px) {
    .container {
        padding: 0 10px;
    }

    .header-wrapper {
        min-height: 56px;
    }

    .logo img {
        width: 118px;
        height: auto;
    }

    .mobile-menu-toggle {
        font-size: 20px;
        padding: 8px;
    }

    .search-box {
        flex: 1 1 auto;
        margin: 0 8px;
    }

    .search-box input {
        width: 100%;
        padding: 6px 34px 6px 12px;
        font-size: 13px;
    }

    .search-box input:focus {
        width: 100%;
    }

    .nav-menu {
        margin-top: 6px;
        padding: 6px;
    }

    .nav-menu li > a {
        padding: 12px 10px;
        font-size: 14px;
    }

    .dropdown-menu a {
        padding: 10px 12px;
        font-size: 13px;
    }
}