/* 导航栏样式 */
.navbar {
    background-color: var(--white);
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 15px 0;
}

.navbar .container {
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.5rem;
}

.navbar-brand img {
    height: 70px;
    width: auto;
    max-width: 180px;
    object-fit: contain;
    display: block;
}

.nav-links {
    display: flex;
    gap: 4rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.nav-link {
    text-decoration: none;
    color: var(--text-color);
    font-size: 1rem;
    font-weight: 500;
    padding: 0.5rem 0;
    position: relative;
    transition: color 0.2s;
}

.nav-link:hover {
    color: var(--primary-color);
}

.nav-link.active {
    color: var(--primary-color);
    font-weight: 600;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
}

.user-menu {
    position: relative;
}

.user-avatar {
    width: 46px; /* 从46px增加到56px */
    height: 46px; /* 从46px增加到56px */
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--border-color);
    cursor: pointer;
    transition: all 0.3s ease;
}

/* 同时调整默认头像的大小，以保持一致 */
.default-avatar {
    width: 56px; /* 相应增加 */
    height: 56px; /* 相应增加 */
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: 20px; /* 可以考虑稍微增加字体大小 */
    cursor: pointer;
    border: 2px solid var(--border-color);
    transition: all 0.3s ease;
}

.default-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: 16px;
    cursor: pointer;
    border: 2px solid var(--border-color);
    transition: all 0.3s ease;
}

.default-avatar:hover {
    border-color: var(--primary-color);
    transform: scale(1.05);
}

.user-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background-color: var(--white);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    min-width: 240px;
    z-index: 1000;
    padding: 0.5rem 0;
    border: 1px solid var(--border-color);
    display: none;
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.3s, transform 0.3s;
}

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

.dropdown-header {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.dropdown-user-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.dropdown-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    object-fit: cover;
}

.dropdown-default-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: 20px;
}

.user-details h6 {
    margin-bottom: 0.25rem;
    font-weight: 600;
}

.user-details small {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.dropdown-menu-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.5rem;
    color: var(--text-color);
    text-decoration: none;
    transition: all 0.2s;
}

.dropdown-menu-item:hover {
    background-color: #f8fafc;
    color: var(--primary-color);
}

.dropdown-menu-item i {
    width: 20px;
    color: var(--text-secondary);
}

.dropdown-menu-item:hover i {
    color: var(--primary-color);
}

.dropdown-divider {
    margin: 0.5rem 0;
    border-top: 1px solid var(--border-color);
}

.btn {
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s;
    border: none;
    cursor: pointer;
    font-size: 0.875rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: var(--white);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
}

.btn-secondary {
    background-color: var(--white);
    color: var(--primary-color);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: #f3f4f6;
}