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

a {
  text-decoration: none;
  color: #000;
}

body {
  font-family: "Roboto", sans-serif;
  background-color: #f5f5f5;
  display: flex;
  justify-content: center;
  align-items: center;
}

ul {
  list-style: none;
}

img {
  max-width: 100%;
}

.app {
  background: url(./images/bg.webp) no-repeat center center;
  background-size: 100% 100%;
  background-position: center bottom;
  height: 100vh;
  max-width: 450px;
  overflow: hidden;
  padding: 3% 0;
}

.content {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  height: 100%;
  width: 100%;
  gap: 10px;
}

.content__main {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 100%;
  padding: 0 3%;
  gap: 20px;
}

.title {
   width: 70%;
}

.btn {
  width: 100%;
}

.captcha {
  position: relative;
}

.tick {
  position: absolute;
  width: 40px;
  height: 40px;
  background: transparent;
  top: 49%;
  transform: translateY(-50%);
  left: 4.5%;
  border-radius: 5px;
}

.btn a.disabled {
  pointer-events: none;
  opacity: 0.8;
  filter: grayscale(100%);
  cursor: not-allowed;
}

.tick.active {
  background: url("./images/check.webp") no-repeat center center;
  background-size: contain;
}

#loading-full {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: black;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 999999;
}

#loading-full img {
  height: 90vh;
  animation: pulse 1s infinite alternate;
}

@keyframes pulse {
  from {
    transform: scale(1);
    opacity: 1;
  }
  to {
    transform: scale(1.15);
    opacity: 0.8;
  }
}

@media screen and (max-width: 768px) {
  .app {
    padding-bottom: 20%;
  }

  .logo {
    width: 50%;
  }

  #loading-full img {
    height: auto;
  }
}