/* 导航栏样式 */
header {
    background: linear-gradient(90deg, var(--secondary-color), var(--secondary-dark));
    color: white;
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(0,0,0,0.3);
    border-bottom: 1px solid rgba(0, 198, 255, 0.2);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 1rem;
    flex-wrap: nowrap;
    gap: 1rem;
}

.logo {
    font-size: 1.3rem;
    font-weight: bold;
    letter-spacing: 0.5px;
    text-shadow: 0 0 10px rgba(0, 198, 255, 0.5);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    position: relative;
    flex-shrink: 0;
    white-space: nowrap;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    user-select: none;
}

.logo-img {
    height: 40px;
    width: auto;
    object-fit: contain;
    filter: drop-shadow(0 0 8px rgba(0, 198, 255, 0.3));
    transition: all 0.3s ease;
}

.logo i {
    color: var(--primary-color);
    filter: drop-shadow(0 0 5px rgba(0, 198, 255, 0.5));
}

.logo:hover {
    transform: scale(1.05);
    text-shadow: 0 0 15px rgba(0, 198, 255, 0.8);
}

.logo:hover .logo-img {
    filter: drop-shadow(0 0 12px rgba(0, 198, 255, 0.6));
    transform: scale(1.05);
}

.logo:active {
    transform: scale(0.98);
    transition: all 0.1s ease;
}

.logo::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 40%;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), transparent);
    border-radius: 2px;
    transition: width 0.3s ease;
}

.logo:hover::after {
    width: 80%;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 0.75rem;
    flex: 1;
    justify-content: center;
    margin: 0 1rem;
}

.nav-links a {
    color: white;
    text-decoration: none;
    padding: 0.4rem 0.6rem;
    border-radius: 6px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    gap: 0.35rem;
    border: 1px solid transparent;
    font-size: 0.9rem;
    white-space: nowrap;
}

.nav-links a:before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: white;
    transition: var(--transition);
    opacity: 1;
}

.nav-links a:hover:before,
.nav-links a.active:before {
    width: 100%;
}

.nav-links a:hover {
    transform: translateY(-1px);
}

.nav-links a.active {
    background-color: transparent;
    transform: none;
    border: none;
    box-shadow: none;
}

.nav-links a i {
    color: rgba(255, 255, 255, 0.7);
    filter: none;
}

/* 用户信息区域 */
/* 用户信息链接容器 */
.user-info-link {
    text-decoration: none;
    color: inherit;
    display: block;
    border-radius: 20px;
    transition: var(--transition);
}

.user-info-link:hover {
    transform: translateY(-2px);
}

.user-info {
    background-color: rgba(0, 198, 255, 0.1);
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 10px rgba(0,0,0,0.2);
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    border: 1px solid rgba(0, 198, 255, 0.2);
    font-size: 0.85rem;
    white-space: nowrap;
    flex-shrink: 0;
    position: relative;
}

.user-info::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 50px;
    height: 50px;
    background: radial-gradient(circle at top right, rgba(0, 198, 255, 0.1), transparent 70%);
    pointer-events: none;
    border-radius: 20px;
}

.user-info-link:hover .user-info {
    background-color: rgba(0, 198, 255, 0.15);
    box-shadow: 0 6px 15px rgba(0,0,0,0.25);
}

.user-info-link:active {
    transform: translateY(-1px);
}

.user-info i {
    color: var(--warning-color);
    filter: drop-shadow(0 0 3px rgba(255, 184, 0, 0.3));
}

/* 用户信息状态样式 */
.user-info #points {
    transition: var(--transition);
}

.user-info #points.not-logged {
    color: var(--warning-color);
    opacity: 0.85;
}

.user-info #points.error-text {
    color: var(--danger-color);
    opacity: 0.85;
}

.user-info .divider {
    opacity: 0.6;
    color: rgba(255, 255, 255, 0.7);
    font-weight: 300;
}

.user-info #nickname {
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
    max-width: 100px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.user-info #nickname.not-logged {
    color: var(--warning-color);
    opacity: 0.85;
}

/* 移动端菜单按钮 */
.menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    background: none;
    border: none;
    padding: 0.5rem;
    border-radius: 6px;
    transition: var(--transition);
    gap: 4px;
}

.menu-toggle:hover {
    background: rgba(0, 198, 255, 0.1);
    transform: scale(1.05);
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background: white;
    transition: var(--transition);
    border-radius: 2px;
    transform-origin: center;
}

.menu-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.menu-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}


/* 移动端导航样式 */
@media (max-width: 992px) {
    .nav-container {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        position: relative;
        padding: 0.75rem 1rem;
        gap: 0.5rem;
    }
    
    .logo {
        flex-shrink: 0;
        font-size: 1.2rem;
        order: 1;
    }
    
    .logo-img {
        height: 35px;
    }
    
    .menu-toggle {
        display: flex !important;
        order: 3;
        flex-shrink: 0;
    }
    
    .nav-links {
        position: fixed !important;
        top: 60px !important;
        left: 0 !important;
        right: 0 !important;
        width: 100% !important;
        background-color: var(--secondary-color) !important;
        padding: 20px !important;
        box-shadow: 0 10px 20px rgba(0,0,0,0.3) !important;
        z-index: 1000 !important;
        display: none !important;
        flex-direction: column !important;
        max-height: 80vh !important;
        overflow-y: auto !important;
        border-top: 2px solid var(--primary-color) !important;
    }
    
    .nav-links.show {
        display: flex !important;
    }
    
    .nav-links li {
        width: 100% !important;
        margin: 8px 0 !important;
    }
    
    .nav-links a {
        display: flex !important;
        width: 100% !important;
        padding: 15px !important;
        margin: 0 !important;
        justify-content: flex-start !important;
        font-size: 16px !important;
        color: white !important;
    }
    
    .nav-links a:hover {
        background: rgba(0, 198, 255, 0.1) !important;
        color: white !important;
        transform: translateX(5px) !important;
        box-shadow: 0 4px 8px rgba(0, 198, 255, 0.3) !important;
    }
    
    .nav-links a i {
        margin-right: 15px !important;
    }
    
    .user-info-link {
        order: 2;
        flex-shrink: 0;
        flex: 1;
        margin-left: 0.5rem;
        margin-right: 0.5rem;
    }
    
    .user-info {
        font-size: 0.75rem !important;
        padding: 0.4rem 0.7rem !important;
        gap: 0.4rem !important;
        white-space: nowrap;
        width: auto;
        justify-content: flex-start !important;
        text-align: left !important;
    }
    
    /* 在很小的屏幕上隐藏用户信息的某些部分 */
    @media (max-width: 480px) {
        .user-info .divider,
        .user-info .fas.fa-coins,
        .user-info span:not(#nickname):not(#points) {
            display: none;
        }
        
        .user-info {
            font-size: 0.65rem !important;
            padding: 0.3rem 0.5rem !important;
            gap: 0.3rem !important;
        }
        
        .user-info #nickname {
            max-width: 50px;
        }
        
        .user-info-link {
            margin-left: 0.3rem;
            margin-right: 0.3rem;
        }
    }
    
    /* 遮罩层样式 */
    body.menu-open::after {
        content: '';
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.5);
        z-index: 999;
        animation: fadeIn 0.3s ease;
        backdrop-filter: blur(3px);
    }
    
    @keyframes fadeIn {
        from { opacity: 0; }
        to { opacity: 1; }
    }
}

/* 大屏幕优化 */
@media (min-width: 1200px) {
    .nav-container {
        padding: 0 2rem;
    }
    
    .logo {
        font-size: 1.5rem;
        gap: 0.75rem;
        letter-spacing: 1px;
    }
    
    .logo-img {
        height: 45px;
    }
    
    .nav-links {
        gap: 1rem;
    }
    
    .nav-links a {
        padding: 0.5rem 0.8rem;
        font-size: 1rem;
        gap: 0.5rem;
    }
    
    .user-info-link {
        border-radius: 25px;
    }
    
    .user-info {
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
        gap: 0.75rem;
        border-radius: 25px;
    }
}

/* 中等屏幕优化 */
@media (min-width: 993px) and (max-width: 1199px) {
    .nav-links {
        gap: 0.5rem;
    }
    
    .nav-links a {
        padding: 0.35rem 0.5rem;
        font-size: 0.85rem;
    }
    
    .user-info {
        padding: 0.35rem 0.7rem;
        font-size: 0.8rem;
    }
}



/* 中等小屏幕调整 */
@media (max-width: 768px) and (min-width: 481px) {
    .user-info #nickname {
        max-width: 60px;
    }
    
    .user-info {
        font-size: 0.75rem !important;
        padding: 0.35rem 0.6rem !important;
    }
    
    .logo {
        font-size: 1.1rem;
    }
    
    .logo-img {
        height: 32px;
    }
    
    .user-info-link {
        margin-left: 0.4rem;
        margin-right: 0.4rem;
    }
}