/* 登录容器 */
.login-container {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    justify-content: center;
    align-items: center;
}

.login-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
}

/* 登录框 */
.login-box {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    padding: 1.2rem;
    border-radius: 10px;
    width: 90%;
    max-width: 280px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    position: relative;
}

/* 标题 */
.login-title {
    text-align: center;
    margin-bottom: 1rem;
    color: #fff;
    font-size: 1.2rem;
    font-weight: 600;
}

/* 表单 */
#loginForm, #regForm {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

/* 输入框 */
#loginForm input, #regForm input {
    padding: 0.7rem;
    width: 100%;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 6px;
    font-size: 0.9rem;
    background: rgba(255, 255, 255, 0.15);
    color: #fff;
    box-sizing: border-box;
}

#loginForm input:focus, #regForm input:focus {
    outline: none;
    border-color: rgba(255, 255, 255, 0.6);
    background: rgba(255, 255, 255, 0.25);
}

#loginForm input::placeholder, #regForm input::placeholder {
    color: rgba(255, 255, 255, 0.7);
}

/* 错误提示 */
.error-message {
    color: #ff6b6b;
    font-size: 0.8rem;
    text-align: center;
}

/* 按钮 */
.login-btn {
    padding: 0.7rem;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.2);
    color: #fff;
    font-size: 0.9rem;
    border: 1px solid rgba(255, 255, 255, 0.3);
    cursor: pointer;
}

.register-btn {
    background: rgba(86, 171, 47, 0.4);
}

/* 模态框 */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: none;
    justify-content: center;
    align-items: center;
    padding: 1rem;
}

.modal-content {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    padding: 1.2rem;
    border-radius: 10px;
    width: 90%;
    max-width: 280px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    position: relative;
}

.close-btn {
    position: absolute;
    top: 0.5rem;
    right: 0.7rem;
    font-size: 1.4rem;
    cursor: pointer;
    color: rgba(255, 255, 255, 0.8);
    background: none;
    border: none;
}