.fa-brands {
  font-size: 3em;
  /* Увеличивает размер иконок в 2 раза */
}

html,
body {
  overflow-x: hidden;
}

body {
  margin: 0;
  font-family: "Century Gothic", sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100vh;
  background: #f5f5f5;
  color: #222;
  transition:
    background 0.3s,
    color 0.3s;
}

:root {
  --gradient-start: #00bfff;
  --gradient-end: #9b59b6;
  --gradient-direction: 90deg;
}

h1 {
  margin-top: 50px;
  font-size: 2.5em;
  background: linear-gradient(var(--gradient-direction), var(--gradient-start), var(--gradient-end));
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
  text-align: center;
}

.gradient-text {
  background: linear-gradient(var(--gradient-direction), var(--gradient-start), var(--gradient-end));
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
}

p {
  color: #555;
  margin: 15px 0 40px 0;
  text-align: center;
  max-width: 600px;
  font-size: 1.1em;
}

@media (prefers-color-scheme: dark) {
  body {
    background: #111;
    color: #f0f0f0;
  }

  .tile {
    background: #222;
    color: #f0f0f0;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  }

  footer {
    background: #111;
    color: #888;
  }

  .center-btn {
    background: #222;
    color: #f0f0f0;
  }

  .center-btn.active,
  .center-btn:hover {
    background: #00bfff;
    color: #111;
  }
}

.tiles {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: center;
  margin-bottom: 40px;
}

.tile {
  border-radius: 12px;
  min-width: 160px;
  width: 180px;
  min-height: 100px;
  padding: 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-weight: bold;
  cursor: pointer;
  font-size: 1em;
  line-height: 1.3;
  word-wrap: break-word;
  white-space: normal;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  background: white;
  color: #222;
  opacity: 0;
  transform: translateY(20px);
  transition: 0.5s all;
}

.tile.show {
  opacity: 1;
  transform: translateY(0);
}

.tile:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.gradient1 {
  background: linear-gradient(135deg, #00bfff, #9b59b6);
  color: #fff;
}

.gradient2 {
  background: linear-gradient(135deg, #ff6b6b, #f7d794);
  color: #fff;
}

.gradient3 {
  background: linear-gradient(135deg, #2ed573, #1e90ff);
  color: #fff;
}

.gradient-vk {
  background: linear-gradient(135deg, #4a76a8, #2a5885);
  color: #fff;
}

.tile svg {
  width: 32px;
  height: 32px;
  margin-bottom: 8px;
  fill: currentColor;
}

.centers {
  display: flex;
  gap: 15px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 30px;
}

.center-btn {
  padding: 12px 25px;
  background: #eee;
  border: none;
  border-radius: 8px;
  color: #222;
  font-weight: bold;
  cursor: pointer;
  transition:
    0.3s,
    transform 0.2s;
}

.center-btn:hover,
.center-btn.active {
  background: #00bfff;
  color: #fff;
  transform: scale(1.05);
}

.panel {
  display: none;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: center;
  margin-bottom: 50px;
}

.panel.active {
  display: flex;
}

footer {
  box-sizing: border-box;
  margin-top: auto;
  padding: 20px;
  text-align: center;
  width: 100%;
}

footer div {
  margin-top: 5px;
  font-size: 0.9em;
}

footer a {
  color: #00bfff;
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}

.highlight {
  box-shadow: 0 0 15px 4px #ffd700 !important;
}

@media (max-width: 600px) {

  .tiles,
  .panel,
  .centers {
    flex-direction: column;
    align-items: center;
  }

  .tile {
    width: 90%;
    max-width: 400px;
    min-height: auto;
    height: auto;
    padding: 16px;
    font-size: 1.1em;
  }
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

.main {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - 200px);
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  padding: 20px;
  box-sizing: border-box;
}

#display-area {
  font-size: 24px;
  margin-bottom: 20px;
  text-align: center;
}

#prompt {
  font-size: 1.5rem;
  margin-bottom: 20px;
  text-align: center;
}

.correct {
  color: #2ed573;
  font-weight: bold;
}

.incorrect {
  color: #ff6b6b;
  font-weight: bold;
}

.remaining {
  color: #888;
}

.download-btn {
  display: inline-block;
  padding: 10px 15px;
  margin: 5px 0;
  background-color: #007bff;
  color: #ffffff;
  text-decoration: none;
  border-radius: 5px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  transition: background-color 0.2s ease, box-shadow 0.2s ease;
}

.download-btn:hover {
  background-color: #0056b3;
}

.download-btn:active {
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}