frontend/src/App.css


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:root {
  --bg-main: #1f2526;
  --bg-secondary: #364446;
  --primary-element: #56d0b8;
  --secondary-element: #5dd6e3;
  --highlight-element: #ffec69;
}

.App {
  text-align: center;
}

.Logo-container {
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.App-logo {
  height: 15vmin;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
}

@media (prefers-reduced-motion: no-preference) {
  .App-logo {
    animation: Logo-rotate-in 2s cubic-bezier(0.755, 0.05, 0.855, 0.06) forwards;
  }
  .App-main {
    opacity: 0;
    animation: App-fade-in 0.65s ease-in 1.8s forwards;
  }
}

.App-bg {
  background-color: var(--bg-main);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.App-main {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-size: calc(10px + 2vmin);
}

.Grid-container {
  background: var(--bg-main);
  border-radius: 20px;
  width: 80vmin;
  height: 80vmin;
  display: grid;
  gap: 0.8vmin; /* exactly the same as the grid gap */
}

.Grid {
  display: grid;
  width: 100%;
  height: auto;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.8vmin;
}

.Fit-text {
  overflow: hidden;
  text-overflow: clip;
}
.Grid-square .Fit-text {
  font-size: calc(10px + 1vmin);
  overflow: hidden;
  text-overflow: clip;
}
.Completed-group .Fit-text {
  font-size: calc(10px + 2vmin);
  font-style: bold;
  overflow: hidden;
  text-overflow: clip;
}

.Grid-square {
  background: var(--secondary-element);
  border: none;
  border-radius: 10px;
  width: 19.4vmin;
  height: 19.4vmin;
  font-size: 50%;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.Completed-group {
  background: var(--secondary-element);
  border: none;
  border-radius: 10px;
  width: 100%;
  height: 19.4vmin;
  font-size: 50%;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.Selected {
  background: var(--highlight-element);
}

.Removed {
  background: var(--bg-secondary);
  cursor: default;
}

.Submit-button {
  background: var(--primary-element);
  border-radius: 10px;
  margin-top: 2vmin;
  font-size: calc(10px + 1vmin);
  font-weight: bold;
  width: 100%;
  height: 5vh;
  border: none;
  cursor: pointer;
}

@keyframes Logo-rotate-in {
  from {
    transform: translate(-50%, -50%) rotate(0deg) scale(1);
    opacity: 1;
  }
  to {
    transform: translate(-50%, -50%) rotate(360deg) scale(5);
    opacity: 0;
  }
}

@keyframes App-fade-in {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}