/* 用户导航样式 - 优化版本 */
/* 用户导航变量 - 从主CSS继承header-height */
:root {
    --dropdown-width: 200px;
    --avatar-size: 32px;
}


.user-nav {
    position: relative;
    display: flex;
    height: 100%;
    align-items: center;
    padding-left: var(--spacing-lg, 24px);
}

.user-nav .dropdown {
    position: relative;
}

.dropdown-toggle {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 16px;
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    cursor: pointer;
    color: var(--text-primary);
    transition: all 0.3s ease;
    font-size: 0.9rem;
    font-weight: 500;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.dropdown-toggle:hover {
    background-color: rgba(255, 255, 255, 0.95);
    border-color: var(--primary-color, #6C63FF);
    box-shadow: 0 4px 16px rgba(108, 99, 255, 0.08);
    transform: translateY(-1px);
}

.user-avatar {
    width: var(--avatar-size);
    height: var(--avatar-size);
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--primary-color, #6C63FF);
    background-color: #f0f0f0;
}

.user-label {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-primary, #1a1a1a);
    letter-spacing: 0.2px;
}

.dropdown-arrow {
    margin-left: 4px;
    transition: transform 0.3s ease;
    color: var(--text-secondary, #666);
}

.dropdown-toggle[aria-expanded="true"] {
    background-color: rgba(108, 99, 255, 0.05);
    border-color: var(--primary-color, #6C63FF);
}

.dropdown-toggle[aria-expanded="true"] .dropdown-arrow {
    transform: rotate(180deg);
    color: var(--primary-color, #6C63FF);
}

.dropdown-menu {
    display: none;
    position: absolute;
    top: calc(100% + 12px);
    right: 0;
    width: var(--dropdown-width);
    padding: 12px 0;
    background: white;
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
    border: 1px solid rgba(0, 0, 0, 0.06);
    z-index: 1000;
    opacity: 0;
    transform: translateY(-10px) scale(0.95);
    transition: opacity 0.3s ease, transform 0.3s ease;
    backdrop-filter: blur(20px);
}

.dropdown-menu.show {
    display: block;
    opacity: 1;
    transform: translateY(0) scale(1);
}

.dropdown-menu::before {
    content: '';
    position: absolute;
    top: -8px;
    right: 24px;
    width: 16px;
    height: 16px;
    background: white;
    border-left: 1px solid rgba(0, 0, 0, 0.06);
    border-top: 1px solid rgba(0, 0, 0, 0.06);
    transform: rotate(45deg);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 20px;
    color: var(--text-primary, #1a1a1a);
    text-decoration: none;
    transition: all 0.2s ease;
    font-size: 0.9rem;
    font-weight: 500;
}

.dropdown-item:hover {
    background-color: rgba(108, 99, 255, 0.05);
    color: var(--primary-color, #6C63FF);
    padding-left: 24px;
}

.dropdown-item svg {
    width: 16px;
    height: 16px;
    color: var(--text-secondary, #666);
    transition: color 0.2s ease;
    flex-shrink: 0;
}

.dropdown-item:hover svg {
    color: var(--primary-color, #6C63FF);
}

.dropdown-divider {
    height: 1px;
    margin: 8px 20px;
    background-color: rgba(0, 0, 0, 0.06);
}

.auth-buttons {
    display: flex;
    gap: 12px;
}

.auth-buttons .login-btn,
.auth-buttons .register-btn {
    padding: 1.2rem 2.4rem;
    border-radius: var(--border-radius-md, 10px);
    font-weight: 500;
    font-size: var(--font-size-md, 1.6rem);
    line-height: 1.2;
    transition: all 0.3s ease;
    cursor: pointer;
}

.login-btn {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(0, 0, 0, 0.08);
    color: var(--text-primary, #1a1a1a);
}

.login-btn:hover {
    background: rgba(255, 255, 255, 0.95);
    border-color: var(--primary-color, #6C63FF);
    color: var(--primary-color, #6C63FF);
    transform: translateY(-1px);
}

.register-btn {
    background: var(--primary-color, #6C63FF);
    border: 1px solid var(--primary-color, #6C63FF);
    color: white;
    box-shadow: 0 2px 8px rgba(108, 99, 255, 0.2);
}

.register-btn:hover {
    background: var(--primary-color-dark, #5A52E8);
    border-color: var(--primary-color-dark, #5A52E8);
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(108, 99, 255, 0.3);
}

@media (max-width: 768px) {
    .user-nav {
        order: 2;
        padding-left: 16px;
    }
    
    .user-nav::before {
        left: -12px;
        height: 20px;
    }
    
    .dropdown-menu {
        width: 180px;
        right: -10px;
    }
    
    .user-avatar {
        width: 28px;
        height: 28px;
    }
    
    .dropdown-toggle {
        padding: 6px 12px;
        gap: 8px;
    }
}