@import url("https://fonts.googleapis.com/css2?family=Do+Hyeon&display=swap");

html {
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;

  font-size: 16px;
}

body {
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;

  font-family: sans-serif;
}

.app {
  overflow: auto;
  display: flex;
  flex-direction: row;

  width: 100%;
  height: 100%;

  background-color: #ffffff;
}

.loop-logo {
  --loop-symbol-size: 4rem;
  --loop-title-size: var(--loop-symbol-size);
  --loop-title-margin: calc(var(--loop-symbol-size) / 3);

  --loop-title-color: #222222;
  --loop-symbol-color: #0096ff;
  --loop-bg-color: #ffffff;

  display: flex;
  flex-direction: row;
  align-items: center;
  flex-shrink: 0;

  margin: auto;

  font-family: "Do Hyeon", sans-serif;

  background-color: var(--loop-bg-color);
}

@media (max-width: 500px) {
  .loop-logo {
    --loop-symbol-size: 3rem;
  }
}

@media (max-width: 400px) {
  .loop-logo {
    --loop-symbol-size: 2.5rem;
  }
}

@media (max-width: 350px) {
  .loop-logo {
    --loop-symbol-size: 2rem;
  }
}

@keyframes loop-symbol-opacity-animation {
  100% {
    opacity: 1;
  }
}

@keyframes loop-symbol-radius-animation {
  100% {
    border-top-left-radius: 0;
  }
}

.loop-symbol {
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: center;
  flex-shrink: 0;

  width: var(--loop-symbol-size);
  height: var(--loop-symbol-size);
  border-radius: 50%;

  background-color: var(--loop-symbol-color);

  opacity: 0;
  border-top-left-radius: 50%;
}

.loop-symbol::after {
  content: "";

  width: 60%;
  height: 60%;
  border-radius: 50%;

  background-color: var(--loop-bg-color);
}

.loop-symbol.loop-left {
  transform: rotate(135deg);

  animation: 3s ease 0s loop-symbol-opacity-animation forwards,
    3s ease 2s loop-symbol-radius-animation forwards;
}

.loop-symbol.loop-right {
  transform: rotate(-45deg);

  animation: 3s ease 1s loop-symbol-opacity-animation forwards,
    3s ease 2s loop-symbol-radius-animation forwards;
}

@keyframes loop-title-cursor-animation {
  30% {
    border-left-color: var(--loop-title-color);
  }
  70% {
    border-left-color: var(--loop-title-color);
  }
  100% {
    width: 0;
    border-left-color: transparent;
  }
}

.loop-title {
  position: relative;

  margin-left: var(--loop-title-margin);

  font-size: var(--loop-title-size);
}

.loop-title::after {
  content: "";
  position: absolute;

  top: 50%;
  right: -5px;
  width: calc(100% + 5px);
  height: 80%;
  transform: translateY(-50%);

  background-color: var(--loop-bg-color);
  border-left: 5px solid transparent;

  animation: 2s ease 3s loop-title-cursor-animation forwards;
}