.btn.btn-circle {
  padding: 0;
  border-radius: 50% !important;
}

/* -- Buttons colors -------------------------------- */
//## Button template
.btn-temlate (@color500; @color600; @color700; @color800; @color900) {
  background-color: @color500; // Color 500
  
  &:hover {
    background-color: @color600; // Color 600
  }
  
  &:active, &.active {
    background-color: @color600; // Color 600
  }
  
  &:focus {
    background-color: @color700; // Color 700
  }
  
  &:disabled, &.disabled, &[disabled] {
    background-color: darken(#ccc, 10%);
  }
  
  //## color for riple-effect
  .ink {
    background-color: @color800; // Color 800
  }
}
.btn-flat-temlate (@color500; @color600; @color700; @color800; @color900) {
  color: @color500; // Color 500
  background-color: transparent;
  
  &:hover {
    color: @color600; // Color 600
    background-color: lighten(#999, 30%);
  }
  
  &:active, &.active {
    color: @color700; // Color 700
    background-color: lighten(#999, 20%);
  }
  
  &:focus {
    color: @color800; // Color 800
    background-color: lighten(#999, 20%);
  } 
  
  //## color for riple-effect
  .ink {
    background-color: darken(#ccc, 30%);
  }
}

//## Default // color: white
.btn-default, .dropdown-toggle.btn-default {
  .btn-temlate(#fff; lighten(#999, 30%); lighten(#999, 20%); lighten(#999, 12%); lighten(#999, 20%);) 
}
.btn-flat.btn-default {
  .btn-flat-temlate(#212121; darken(#212121, 5%); darken(#212121, 12%); #000; #000;) 
}

//## Primary // color: blue
.btn-primary, .dropdown-toggle.btn-primary {
  .btn-temlate(#5677fc; #4e6cef; #455ede; #3b50ce; #2a36b1;) 
}
.btn-flat.btn-primary {
  .btn-flat-temlate(#5677fc; #4e6cef; #455ede; #3b50ce; #2a36b1;) 
}

//## Success // color: green
.btn-success, .dropdown-toggle.btn-success {
  .btn-temlate(#259b24; #0a8f08; #0a7e07; #056f00; #0d5302;)   
}
.btn-flat.btn-success {
  .btn-flat-temlate(#259b24; #0a8f08; #0a7e07; #056f00; #0d5302;) 
}

//## Info // color: light blue
.btn-info, .dropdown-toggle.btn-info {
  .btn-temlate(#03a9f4; #039be5; #0288d1; #0277bd; #01579b;)   
}
.btn-flat.btn-info {
  .btn-flat-temlate(#03a9f4; #039be5; #0288d1; #0277bd; #01579b;) 
}

//## Warning // color: amber
.btn-warning, .dropdown-toggle.btn-warning {
  .btn-temlate(#ffc107; #ffb300; #ffa000; #ff8f00; #ff6f00;)   
}
.btn-flat.btn-warning {
  .btn-flat-temlate(#ffc107; #ffb300; #ffa000; #ff8f00; #ff6f00;)   
}

//## Danger // color: deep orange
.btn-danger, .dropdown-toggle.btn-danger {
  .btn-temlate(#ff5722; #f4511e; #e64a19; #d84315; #bf360c;)   
}
.btn-flat.btn-danger {
  .btn-flat-temlate(#ff5722; #f4511e; #e64a19; #d84315; #bf360c;)  
}

/* -- Buttons sizes -------------------------------- */
.btn-circle {
  width: 56px;
  height: 56px;
  min-width: 56px;
  
  span {
    line-height: 56px;
  }
}

.btn-circle.btn-lg {
  width: 78px;
  height: 78px;
  min-width: 78px;
  
  span {
    line-height: 78px;
  }
}

.btn-circle.btn-sm {
  width: 40px;
  height: 40px;
  min-width: 40px;
  
  span {
    line-height: 40px;
  }
}

.btn-circle.btn-xs {
  width: 30px;
  height: 30px; 
  min-width: 30px;
  
  span {
    line-height: 30px;
  }
}


/*-- Button groups --------------------------------- */
.btn-group .btn {
  border-radius: 2px;
}

.btn-group.open .dropdown-toggle {
  outline: 0;
  outline-offset: 0;  
  box-shadow: none;
  -moz-box-shadow: none;
  -webkit-box-shadow: none;
}

.btn-group .btn+.btn, .btn-group .btn+.btn-group, .btn-group .btn-group+.btn, .btn-group .btn-group+.btn-group {
  margin-left: 0;
}

.btn-group>.btn:hover, .btn-group-vertical>.btn:hover {
  z-index: 0;
}
 .btn-group>.btn:focus:hover, .btn-group-vertical>.btn:focus:hover, .btn-group>.btn:active:hover, .btn-group-vertical>.btn:active:hover, .btn-group>.btn.active:hover, .btn-group-vertical>.btn.active:hover {
  z-index: 2;
}



/* -- Ripple effect -------------------------------- */
.ripple-effect {
  position: relative;
  overflow: hidden;
  -webkit-transform: translate3d(0,0,0);
}
.ink {
  display: block;
  position: absolute;
  pointer-events: none;
  border-radius: 50% ;
  
  -webkit-transform: scale(0);
  -moz-transform: scale(0);
  -ms-transform: scale(0);
  -o-transform: scale(0);
  transform: scale(0);

  background: #fff;
  opacity: 1;
}

// animation effect
.ink.animate {
  -webkit-animation: ripple .5s linear;
  -moz-animation: ripple .5s linear;
  -ms-animation: ripple .5s linear;
  -o-animation: ripple .5s linear;
  animation: ripple .5s linear;
}
@keyframes ripple {
  100% {
    opacity: 0;
    transform: scale(2.5);
  }
}
@-webkit-keyframes ripple {
  100% {
    opacity: 0;
    -webkit-transform: scale(2.5);
    transform: scale(2.5);
  }
}
@-moz-keyframes ripple {
  100% {
    opacity: 0;
    -moz-transform: scale(2.5);
    transform: scale(2.5);
  }
}
@-ms-keyframes ripple {
  100% {
    opacity: 0;
    -ms-transform: scale(2.5);
    transform: scale(2.5);
  }
}
@-o-keyframes ripple {
  100% {
    opacity: 0;
    -o-transform: scale(2.5);
    transform: scale(2.5);
  }
}