/* https://codepen.io/llabrie/pen/drevqR */

fieldset {
  margin: 0 0 3rem;
  padding: 0;
  border: none;
}

.form-radio,
.form-group {
  position: relative;
  margin-top: 2.25rem;
  margin-bottom: 2.25rem;
}

.form-inline>.form-group,
.form-inline>.btn {
  display: inline-block;
  margin-bottom: 0;
}

.form-help {
  margin-top: 0.125rem;
  margin-left: 0.125rem;
  color: #b3b3b3;
  font-size: 0.8rem;
}

.checkbox .form-help,
.form-radio .form-help,
.form-group .form-help {
  position: absolute;
  width: 100%;
}

.checkbox .form-help {
  position: relative;
  margin-bottom: 1rem;
}

.form-radio .form-help {
  padding-top: 0.25rem;
  margin-top: -1rem;
}

.form-group input {
  height: 1.9rem;
}

.form-group textarea {
  resize: none;
}

.form-group select {
  width: 100%;
  font-size: 1rem;
  height: 1.6rem;
  padding: 0.125rem 0.125rem 0.0625rem;
  background: none;
  border: none;
  line-height: 1.6;
  box-shadow: none;
}

.form-group .control-label {
  position: absolute;
  top: 0.25rem;
  pointer-events: none;
  padding-left: 0.125rem;
  z-index: 1;
  color: #b3b3b3;
  font-size: 1rem;
  font-weight: normal;
  -webkit-transition: all 0.28s ease;
  transition: all 0.28s ease;
}

.form-group .bar {
  position: relative;
  border-bottom: 0.0625rem solid #999;
  display: block;
}

.form-group .bar::before {
  content: '';
  height: 0.125rem;
  width: 0;
  left: 50%;
  bottom: -0.0625rem;
  position: absolute;
  background: #337ab7;
  -webkit-transition: left 0.28s ease, width 0.28s ease;
  transition: left 0.28s ease, width 0.28s ease;
  z-index: 2;
}

.form-group input,
.form-group textarea {
  display: block;
  background: none;
  padding: 0.125rem 0.125rem 0.0625rem;
  font-size: 1rem;
  border-width: 0;
  border-color: transparent;
  line-height: 1.9;
  width: 100%;
  color: transparent;
  -webkit-transition: all 0.28s ease;
  transition: all 0.28s ease;
  box-shadow: none;
}

.form-group input[type="file"] {
  line-height: 1;
}

.form-group input[type="file"]~.bar {
  display: none;
}

.form-group select,
.form-group input:focus,
.form-group input:valid,
.form-group input.form-file,
.form-group input.has-value,
.form-group textarea:focus,
.form-group textarea:valid,
.form-group textarea.form-file,
.form-group textarea.has-value {
  color: #333;
}

.form-group select~.control-label,
.form-group input:focus~.control-label,
.form-group input:valid~.control-label,
.form-group input.form-file~.control-label,
.form-group input.has-value~.control-label,
.form-group textarea:focus~.control-label,
.form-group textarea:valid~.control-label,
.form-group textarea.form-file~.control-label,
.form-group textarea.has-value~.control-label {
  font-size: 0.8rem;
  color: gray;
  top: -1rem;
  left: 0;
}

.form-group select:focus,
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
}

.form-group select:focus~.control-label,
.form-group input:focus~.control-label,
.form-group textarea:focus~.control-label {
  color: #337ab7;
}

.form-group select:focus~.bar::before,
.form-group input:focus~.bar::before,
.form-group textarea:focus~.bar::before {
  width: 100%;
  left: 0;
}

.checkbox label,
.form-radio label {
  position: relative;
  cursor: pointer;
  padding-left: 2rem;
  text-align: left;
  color: #333;
  display: block;
}

.checkbox input,
.form-radio input {
  width: auto;
  opacity: 0.00000001;
  position: absolute;
  left: 0;
}

.radio {
  margin-bottom: 1rem;
}

.radio .helper {
  position: absolute;
  top: -0.25rem;
  left: -0.25rem;
  cursor: pointer;
  display: block;
  font-size: 1rem;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  color: #999;
}

.radio .helper::before,
.radio .helper::after {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  margin: 0.25rem;
  width: 1rem;
  height: 1rem;
  -webkit-transition: -webkit-transform 0.28s ease;
  transition: -webkit-transform 0.28s ease;
  transition: transform 0.28s ease;
  transition: transform 0.28s ease, -webkit-transform 0.28s ease;
  border-radius: 50%;
  border: 0.125rem solid currentColor;
}

.radio .helper::after {
  -webkit-transform: scale(0);
  transform: scale(0);
  background-color: #337ab7;
  border-color: #337ab7;
}

.radio label:hover .helper {
  color: #337ab7;
}

.radio input:checked~.helper::after {
  -webkit-transform: scale(0.5);
  transform: scale(0.5);
}

.radio input:checked~.helper::before {
  color: #337ab7;
}

.checkbox {
  margin-top: 3rem;
  margin-bottom: 1rem;
}

.checkbox .helper {
  color: #999;
  position: absolute;
  top: 0;
  left: 0;
  width: 1rem;
  height: 1rem;
  z-index: 0;
  border: 0.125rem solid currentColor;
  border-radius: 0.0625rem;
  -webkit-transition: border-color 0.28s ease;
  transition: border-color 0.28s ease;
}

.checkbox .helper::before,
.checkbox .helper::after {
  position: absolute;
  height: 0;
  width: 0.2rem;
  background-color: #337ab7;
  display: block;
  -webkit-transform-origin: left top;
  transform-origin: left top;
  border-radius: 0.25rem;
  content: '';
  -webkit-transition: opacity 0.28s ease, height 0s linear 0.28s;
  transition: opacity 0.28s ease, height 0s linear 0.28s;
  opacity: 0;
}

.checkbox .helper::before {
  top: 0.65rem;
  left: 0.38rem;
  -webkit-transform: rotate(-135deg);
  transform: rotate(-135deg);
  box-shadow: 0 0 0 0.0625rem #fff;
}

.checkbox .helper::after {
  top: 0.3rem;
  left: 0;
  -webkit-transform: rotate(-45deg);
  transform: rotate(-45deg);
}

.checkbox label:hover .helper {
  color: #337ab7;
}

.checkbox input:checked~.helper {
  color: #337ab7;
}

.checkbox input:checked~.helper::after,
.checkbox input:checked~.helper::before {
  opacity: 1;
  -webkit-transition: height 0.28s ease;
  transition: height 0.28s ease;
}

.checkbox input:checked~.helper::after {
  height: 0.5rem;
}

.checkbox input:checked~.helper::before {
  height: 1.2rem;
  -webkit-transition-delay: 0.28s;
  transition-delay: 0.28s;
}

.radio+.radio,
.checkbox+.checkbox {
  margin-top: 1rem;
}

.has-error .legend.legend,
.has-error.form-group .control-label.control-label {
  color: #d9534f;
}

.has-error.form-group .form-help,
.has-error.form-group .helper,
.has-error.checkbox .form-help,
.has-error.checkbox .helper,
.has-error.radio .form-help,
.has-error.radio .helper,
.has-error.form-radio .form-help,
.has-error.form-radio .helper {
  color: #d9534f;
}

.has-error .bar::before {
  background: #d9534f;
  left: 0;
  width: 100%;
}

.button {
  position: relative;
  background: currentColor;
  border: 1px solid currentColor;
  font-size: 1.1rem;
  color: #4f93ce;
  margin: 3rem 0;
  padding: 0.75rem 3rem;
  cursor: pointer;
  -webkit-transition: background-color 0.28s ease, color 0.28s ease, box-shadow 0.28s ease;
  transition: background-color 0.28s ease, color 0.28s ease, box-shadow 0.28s ease;
  overflow: hidden;
  box-shadow: 0 2px 2px 0 rgba(0, 0, 0, 0.14), 0 3px 1px -2px rgba(0, 0, 0, 0.2), 0 1px 5px 0 rgba(0, 0, 0, 0.12);
}

.button span {
  color: #fff;
  position: relative;
  z-index: 1;
}

.button::before {
  content: '';
  position: absolute;
  background: #071017;
  border: 50vh solid #1d4567;
  width: 30vh;
  height: 30vh;
  border-radius: 50%;
  display: block;
  top: 50%;
  left: 50%;
  z-index: 0;
  opacity: 1;
  -webkit-transform: translate(-50%, -50%) scale(0);
  transform: translate(-50%, -50%) scale(0);
}

.button:hover {
  color: #337ab7;
  box-shadow: 0 6px 10px 0 rgba(0, 0, 0, 0.14), 0 1px 18px 0 rgba(0, 0, 0, 0.12), 0 3px 5px -1px rgba(0, 0, 0, 0.2);
}

.button:active::before,
.button:focus::before {
  -webkit-transition: opacity 0.28s ease 0.364s, -webkit-transform 1.12s ease;
  transition: opacity 0.28s ease 0.364s, -webkit-transform 1.12s ease;
  transition: transform 1.12s ease, opacity 0.28s ease 0.364s;
  transition: transform 1.12s ease, opacity 0.28s ease 0.364s, -webkit-transform 1.12s ease;
  -webkit-transform: translate(-50%, -50%) scale(1);
  transform: translate(-50%, -50%) scale(1);
  opacity: 0;
}

.button:focus {
  outline: none;
}