.style2 {font-size: 12px}
.style5 {font-size: 10px; color: #0000FF; }

:root {
  --page-background: #fff;
  --page-title: #333;
  --page-text: #333;
  --image-grayscale: 0; 
  --image-opacity: 100%;
}

body {
  background: var(--page-background);
  color: var(--page-text);
}

.dark-mode {
  background-color: #2d3239;
  color: #75715e;
    --page-background: #2d3239;
    --page-title: #e9d970;
    --page-text: #75715e;
    --image-grayscale: 50%;
    --image-opacity: 70%;
    --logo-background: #4d5866;
    --logo-words: #fff;  
}
.dark-sato {
	background-color: #000000;
	color: #75715e;
    --page-background: #000000;
    --page-title: ;
    --page-text: #4F4F4F;
    --image-grayscale: 50%;
    --image-opacity: 70%;
    --logo-background: #4d5866;
    --logo-words: #fff;  
}

  #logo--words {
    fill: var(--logo-words);
  }

  #logo--background {
    fill: var(--logo-background);
 }

img, 
video {
  filter: grayscale(var(--image-grayscale)) opacity(var(--image-opacity));
}

h1 {
  color: var(--page-title);
}

button {
      font: inherit;
      cursor: pointer;
    }
@keyframes bounce {
  0%, 20% 60% 100% {
    -webkit-transform: translateY(0);
    transform: translateY(0);
  }
  40% {
    -webkit-transform: translateY(-20px);
    transform: translateY(-20px);
  }
  80% {
    -webkit-transform: translateY(-10px);
    transform: translateY(-10px);
  }
}
.btns {
  text-align: center;
  margin-top: 10px;
}
.ef {
  border: none;
  color: #ffffff;
  padding: 2px;  
  font-size: 8px;
  line-height: 8px;
  border-radius: 18px;
  position: relative;
  box-sizing: border-box;
  cursor: pointer;
  transition: all 400ms ease;
}
.ef-3 {
  background-color: rgba(0,0,0,0);
}
.ef-3:hover {
  background: rgba(0,0,0,0);
  color: #009c3d;
  box-shadow: inset 0 0 0 3px #009cd3;
}
.efeito {
  border: none;
  color: #ffffff;
  padding: 20px;
  margin: 10px;
  font-size: 24px;
  line-height: 24px;
  border-radius: 18px;
  position: relative;
  box-sizing: border-box;
  cursor: pointer;
  transition: all 400ms ease;
}
.efeito-1 {
  background-color: #28348A;
}
.efeito-1:before {
  content: '';
  position: absolute;
  top: 0px;
  left: 0px;
  width: 0px;
  height: 64px;
  background: rgba(255,255,255,0.3);
  border-radius: 10px;
  transition: all 2s ease;
}
.efeito-1:hover:before {
  width: 100%;
}
.efeito-2 {
  background-color: #772150;
}
.efeito-2:before {
  content: '';
  position: absolute;
  top: 0px;
  left: 0px;
  width: 100%;
  height: 0px;
  background: rgba(255,255,255,0.3);
  border-radius: 10px;
  transition: all 2s ease;
}
.efeito-2:hover:before {
  height: 100%;
}
.efeito-3 {
  background-color: #009c3d;
}
.efeito-3:hover {
  background: rgba(0,0,0,0);
  color: #009c3d;
  box-shadow: inset 0 0 0 3px #009cd3;
}
.efeito-4 {
  background-color: #f18f01;
}
.efeito-4:hover {
  animation: bounce 1s;
}
.efeito-5 {
  background-color: #db3a34;
}
.efeito-5:hover {
  transform: skew(-10deg);
}
.efeito-6 {
  background-color: #376693;
  transform-style: preserve-3d;
}
.efeito-6:after {
  padding: 20px;
  position: absolute;
  top: -100%;
  left: 0px;
  width: 100%;  
  background: #3a9999;
  border-radius: 10px;
  box-sizing: border-box;
  content: 'Mudou!';
  transform-origin: left bottom;
  transform: rotateX(90deg)
}
.efeito-6:hover {
  transform-origin: center bottom;
  transform: rotateX(-90deg) translateY(100%);
}
.botao {
      display: inline-block;
      margin: 0.2em;
      border: 0;
      padding: 0.2em 0.5em;
      text-decoration: none;
      color: #FFF;
      background: #F60;
      text-shadow: 2px 2px 2px rgba(0,0,0,0.5);
      border-radius: 0.5em;
      box-shadow: 2px 2px 0 1px #930;
      transition: box-shadow 0.2s ease, transform 0.2s ease;
    }

.botao:active {
      box-shadow: 0 0 0 0 #930, inset 3px 3px 3px #930;
      transform: translate(3px, 3px);
    }
.switch {
  display: inline-block;
  position: relative;
  width: 58px;
  vertical-align: top;
}
.switch > label {
  display: block;
  position: relative;
  height: 25px;
  background-color: #FFF;
  border: 2px solid #d9d9d9;
  transition: all 0.15s ease-in-out;
  font-size: 12px;
  text-align: center;
  line-height: 20px;
}
.switch > label:before {
  content: attr(data-desliga);
  position: absolute;
  top: 0;
  right: 3px;
  width: 33px;
}
.switch > label:after {
  content: '';
  display: block;
  width: 17px;
  height: 17px;
  margin: 2px;
  background-color: #CCC;
}
.switch > input {
  position: absolute;
  top: 0;
  left: 0;
  width: inherit;
  height: inherit;
  opacity: 0;
}
.switch > input:checked + label {
  padding-left: 33px;
  background-color: #3fb6f2;
  border-color: #3fb6f2;
  color: #FFF;
}
.switch > input:checked + label:before {
  content: attr(data-liga);
  left: 1px;
}
.switch > input:checked + label:after {
  margin: 1px;
  width: 19px;
  height: 19px;
  background-color: #FFF; 
}