.ac-game-user-settings {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(10px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.ac-game-user-settings-container {
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    background: linear-gradient(135deg, rgba(25, 25, 35, 0.95), rgba(35, 35, 45, 0.9));
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5),
                inset 0 1px 0 rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(20px);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.ac-game-user-settings-header {
    background: linear-gradient(135deg, rgba(52, 152, 219, 0.1), rgba(41, 128, 185, 0.05));
    padding: 20px 25px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.ac-game-user-settings-title {
    color: #e4e4e7;
    font-size: 24px;
    font-weight: 500;
    font-family: 'Inter', 'Roboto', sans-serif;
    margin: 0;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.ac-game-user-settings-close {
    background: transparent;
    border: none;
    color: rgba(255, 255, 255, 0.6);
    font-size: 28px;
    cursor: pointer;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.ac-game-user-settings-close:hover {
    color: rgba(255, 255, 255, 0.9);
    transform: rotate(90deg);
}

.ac-game-user-settings-content {
    flex: 1;
    overflow-y: auto;
    padding: 25px;
}

/* 设置区块 */
.ac-game-user-settings-section {
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.ac-game-user-settings-section:last-child {
    border-bottom: none;
}

.ac-game-user-settings-section-title {
    color: #3498db;
    font-size: 16px;
    font-weight: 500;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-family: 'Inter', 'Roboto', sans-serif;
}

/* 头像部分 */
.ac-game-user-settings-avatar-section {
    display: flex;
    align-items: center;
    gap: 25px;
}

.ac-game-user-settings-avatar-preview {
    position: relative;
    width: 100px;
    height: 100px;
}

.ac-game-user-settings-avatar-img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid rgba(52, 152, 219, 0.3);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.ac-game-user-settings-avatar-upload {
    flex: 1;
}

.ac-game-user-settings-upload-btn {
    display: inline-block;
    padding: 10px 20px;
    background: linear-gradient(135deg, rgba(52, 152, 219, 0.8), rgba(41, 128, 185, 0.7));
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    font-family: 'Inter', 'Roboto', sans-serif;
    transition: all 0.2s ease;
}

.ac-game-user-settings-upload-btn:hover {
    background: linear-gradient(135deg, rgba(52, 152, 219, 0.9), rgba(41, 128, 185, 0.8));
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(52, 152, 219, 0.3);
}

.ac-game-user-settings-upload-input {
    display: none;
}

.ac-game-user-settings-upload-info {
    color: rgba(228, 228, 231, 0.5);
    font-size: 12px;
    margin-top: 8px;
}

/* 表单组 */
.ac-game-user-settings-form-group {
    margin-bottom: 20px;
}

.ac-game-user-settings-label {
    display: block;
    color: rgba(228, 228, 231, 0.8);
    font-size: 14px;
    margin-bottom: 8px;
    font-family: 'Inter', 'Roboto', sans-serif;
}

.ac-game-user-settings-input-wrapper {
    position: relative;
}

.ac-game-user-settings-input {
    width: 100%;
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    color: #e4e4e7;
    font-size: 14px;
    font-family: 'Inter', 'Roboto', sans-serif;
    transition: all 0.2s ease;
    box-sizing: border-box;
}

.ac-game-user-settings-input:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(52, 152, 219, 0.5);
    box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.1);
}

.ac-game-user-settings-input:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* 用户名验证状态 */
.ac-game-user-settings-username-status {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 18px;
}

.ac-game-user-settings-username-status.checking {
    color: #f39c12;
}

.ac-game-user-settings-username-status.available {
    color: #27ae60;
}

.ac-game-user-settings-username-status.unavailable {
    color: #e74c3c;
}

/* 提示信息 */
.ac-game-user-settings-hint {
    color: rgba(228, 228, 231, 0.5);
    font-size: 12px;
    margin-top: 6px;
}

.ac-game-user-settings-error {
    color: #e74c3c;
    font-size: 12px;
    margin-top: 6px;
}

.ac-game-user-settings-success {
    color: #27ae60;
    font-size: 12px;
    margin-top: 6px;
}

/* 按钮 */
.ac-game-user-settings-btn {
    padding: 12px 24px;
    background: linear-gradient(135deg, rgba(52, 152, 219, 0.8), rgba(41, 128, 185, 0.7));
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    font-family: 'Inter', 'Roboto', sans-serif;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: all 0.2s ease;
}

.ac-game-user-settings-btn:hover:not(:disabled) {
    background: linear-gradient(135deg, rgba(52, 152, 219, 0.9), rgba(41, 128, 185, 0.8));
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(52, 152, 219, 0.4);
}

.ac-game-user-settings-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.ac-game-user-settings-btn.secondary {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.2);
}

.ac-game-user-settings-btn.secondary:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.12);
}

/* 认证类型标签 */
.ac-game-user-settings-auth-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
    background: rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.8);
    margin-left: 10px;
}

.ac-game-user-settings-auth-badge.github {
    background: rgba(36, 41, 46, 0.8);
    color: #fff;
}

.ac-game-user-settings-auth-badge.gitee {
    background: rgba(200, 55, 44, 0.8);
    color: #fff;
}

.ac-game-user-settings-auth-badge.acwing {
    background: rgba(0, 122, 204, 0.8);
    color: #fff;
}

/* 滚动条样式 */
.ac-game-user-settings-content::-webkit-scrollbar {
    width: 6px;
}

.ac-game-user-settings-content::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.02);
}

.ac-game-user-settings-content::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
}

.ac-game-user-settings-content::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.15);
}