@keyframes blink {
  0%,
  100% {
    top: 100px;
  }
  50% {
    top: 90px;
  }
}

@keyframes flicker {
  0% {
    opacity: 0.3;
    filter: brightness(1) saturate(1.3);
  }
  7% {
    opacity: 0.6;
    filter: brightness(0.5) saturate(0.8);
  }
  12% {
    opacity: 0.2;
    filter: brightness(0.2) saturate(0.5);
  }
  18% {
    opacity: 0.9;
    filter: brightness(1.2) saturate(1.4);
  }
  45% {
    opacity: 1;
    filter: brightness(1.1) saturate(1.2);
  }
  58% {
    opacity: 0.5;
    filter: brightness(0.7) saturate(0.9);
  }
  70% {
    opacity: 1;
    filter: brightness(1.5) saturate(1.6);
  }
  100% {
    opacity: 1;
    filter: brightness(1) saturate(1.3);
  }
}

:root {
  font-size: 14px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  --font: "Mansalva", sans-serif;
}

body {
  background-color: black;
}

.header {
  font-family: var(--font);
  color: white;
  height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-inline: 20px;
  font-size: 1rem;
  @media (min-width: 1035px) {
    font-size: 1.5rem;
  }
}

.wall {
  font-family: var(--font);
  text-align: center;
  color: white;
  margin: auto;
  margin-top: 80px;
  @media (min-width: 1035px) {
    padding: 20px;
    width: 70%;
  }
}

.wall .sentence {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  flex-grow: 2;
  margin-block: 8px;

  @media (min-width: 1035px) {
    flex-wrap: nowrap;
    gap: 60px;
  }
}

.wall .letter-container {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  font-size: 1.5rem;
  cursor: pointer;

  @media (min-width: 1035px) {
    font-size: 6rem;
  }
}

.wall .letter-container .bulb {
  height: 25px;
  width: 20px;
  border-radius: 50%;
  transition: ease-in-out 0.5s;
  background-color: var(--bg);
  opacity: 0.15;
  transform: rotate(var(--deg));
}

.wall .letter-container .bulb-on {
  box-shadow: 0 0 20px 2px var(--bg), 0 1px 4px 1px var(--bg),
    0 0 5px 2px var(--bg), inset -2px -4px 1px #000a;
  opacity: 1;
  animation: var(--filckerAnimation);
}

.letter-input {
  display: block;
  margin: 28px auto;
  padding: 8px 12px;
  background: transparent;
  border: none;
  border-bottom: 1px solid #f8fafc;
  color: #f8fafc;
  caret-color: #f8fafc;
  font-family: var(--font);
  line-height: 1;
  outline: none;
  font-size: 2rem;
  width: 90%;

  @media (min-width: 1035px) {
    width: 30%;
  }
}

.letter-input::placeholder {
  color: rgba(255, 255, 255, 0.5);
  opacity: 1;
}

.action {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 20px;
}

.copy-btn {
  padding: 8px 12px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.04);
  color: #f8fafc;
  border: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 1.3rem;
  font-family: var(--font);
  line-height: 1;
  cursor: pointer;
}

.copy-btn:hover {
  background: rgba(255, 255, 255, 0.06);
  box-shadow: 0 10px 30px rgba(2, 6, 23, 0.7);
}

.copy-btn:active {
  transform: translateY(1px) scale(0.99);
}

.copy-btn:focus-visible {
  outline: none;
  border-color: rgba(99, 102, 241, 0.6);
  box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.12), 0 8px 20px rgba(2, 6, 23, 0.6);
}

.dialog {
  display: none;
  font-family: var(--font);
  font-size: 1.4rem;
  background: greenyellow;
  box-shadow: 2px 2px 4px greenyellow;
  border-radius: 8px;
  padding: 12px;
  text-align: center;
  margin: 20px;
  position: absolute;
  top: 100px;
  margin: auto;
  opacity: 1;
  animation: blink 1.2s linear infinite;

  @media (min-width: 1035px) {
    width: 20%;
  }
}

.gorvk-link {
  color: aqua;
}

.gorvk-link:hover {
  color: chartreuse;
}