/* 重置样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 确保body背景色 */
html, body {
    width: 100%;
    height: 100%;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    background-color: #0a0a0a;
    color: #e0e0e0;
    overflow-x: hidden;
    display: flex;
}

/* 导航栏样式 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(10, 10, 10, 0.9);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
    z-index: 1000;
    backdrop-filter: blur(10px);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.nav-brand a {
    font-size: 1.5rem;
    font-weight: bold;
    color: #e0e0e0;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem;
    border-radius: 5px;
    transition: background-color 0.3s;
}

.nav-brand a:hover {
    background-color: rgba(106, 17, 203, 0.1);
}

.nav-list {
    display: flex;
    list-style: none;
}

.nav-item {
    margin-left: 0.5rem;
}

.nav-link {
    color: #e0e0e0;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
    padding: 0.8rem 1.2rem;
    border-radius: 5px;
    display: block;
    position: relative;
}

.nav-link:hover {
    color: #6a11cb;
    background-color: rgba(106, 17, 203, 0.1);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 1.2rem;
    right: 1.2rem;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #6a11cb, #2575fc);
    transition: width 0.3s;
}

.nav-link:hover::after {
    width: calc(100% - 2.4rem);
}

/* 汉堡菜单样式 */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    z-index: 1001;
    padding: 0.5rem;
}

.bar {
    width: 25px;
    height: 3px;
    background-color: #e0e0e0;
    margin: 3px 0;
    transition: 0.3s;
    border-radius: 2px;
}

/* 响应式设计 */
@media screen and (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 0;
        flex-direction: column;
        background-color: rgba(20, 20, 20, 0.95);
        width: 70%;
        height: 100vh;
        text-align: left;
        transition: 0.5s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.3);
        padding: 5rem 1rem;
        z-index: 999;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-list {
        flex-direction: column;
        width: 100%;
    }

    .nav-item {
        margin: 0.5rem 0;
        width: 100%;
    }

    .nav-link {
        padding: 1rem 1.5rem;
        margin: 0;
        width: 100%;
        box-sizing: border-box;
    }

    .hamburger {
        display: flex;
    }

    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
}

/* 确保背景色不会被覆盖 */
body {
    background-color: #0a0a0a !important;
}