@import url("../../resource/lib/icons-1.7.2/font/bootstrap-icons.css");

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* 整个浏览器 视图宽度高度 view height/width */
body {
  width: 100vw;
  height: 100vh;
  overflow: hidden;

  font-family: 'YouYuan', 'Microsoft YaHei';

  --dark-green: #387558;
}

/* form居中 */
.register {
  width: 100%;
  height: 100%;
  display: flex;  /* flex布局 */
  align-items: center;
  justify-content: center;
  background-color: var(--dark-green);
}

.register_form {
  position: relative;
  width: 300px;
  height: 500px;
  background-color: #FFF;
  padding: 2rem;
  border-radius: .5rem;
  box-shadow: .5rem .5rem .5rem rgba(255, 255, 255, .1);
  display: flex;
  flex-direction: column;
  align-items: center;
  /* justify-content: space-around; */
  row-gap: 1rem;
}

.register_logo {
  cursor: pointer;
  color: var(--dark-green);
  font-size: 1.5rem;
  font-weight: bold;
  transition: .3s;
}

.register_logo:hover {
  transform: skew(-20deg, 0deg);
}

.register_box {
  position: relative;
  height: 3.25rem; /* 3个字体高度 root em*/
  width: 12rem;
  /* margin: 1rem 0; */
}

.register_input {
  font-size: 1rem;
  font-weight: bold;
  width: 100%;
  position: absolute;
  top: 1.25rem;
  left: 0;
  padding: .5rem .25rem;
  border: none;
  background: none;
  border-bottom: 1px solid #CCC;
  outline: none; /* input focus 没有焦点边框 */
}

.register_label {
  font-size: 1rem;
  position: absolute;
  top: 1.75rem;
  left: .25rem;
  width: 6rem;
  color: #AAA;
  transition: .3s;
  z-index: 5;
}

/* input 获得focus label 往上移 */
.register_input:focus + .register_label {
  top: 0;
  font-weight: bold;
  color: var(--dark-green);
}

/* + 后续兄弟元素选择符 */
/* :placeholder-shown => input placeholder 有内容时会被选中 */
/* input 取反(有placeholder内容) => 没有placeholder内容 输入框输入文本 placeholder内容被隐藏 */
.register_input:not(:placeholder-shown) + .register_label {
  top: 0;
  font-weight: bold;
  color: var(--dark-green);
}

.register_btn {
  width: 6rem;
  font-size: 1rem;
  padding: .5rem 1rem;
  background-color: var(--dark-green);
  color: #FFF;
  border: none;
  border-radius: .5rem;
  margin-top: 1rem;
  cursor: pointer;
  text-align: center;
}

.register_btn:hover {
  font-weight: bold;
  background-color: #fa8c35;
  color: #FFF;
}

.sun, .moon {
  position: absolute;
  opacity: 0;
  font-size: 1.5rem;
  transform: rotate(-90deg);
  transition: .5s;
}

.sun {
  color: #fa8c35;
  top: 0rem;
  left: 1rem;
}

.moon {
  color: #FFE869;
  top: 0rem;
  right: 1rem;
}

.sun::after, .moon::after {
  content: '';
  position: absolute;
  top: .75rem;
  left: 1.75rem;
  width: 2.5rem;
  height: 1px;
  background-color: #666;
}

.register_btn:hover + .sun {
  top: 3rem;
  opacity: 1;
}

.register_logo:hover + .moon {
  top: 3rem;
  opacity: 1;
}

/* 验证失败 红色提醒 */
.show-warn-border {
  border-bottom: 2px solid red;
}
.show-warn-label {
  color: red !important;
}