.game-page {
  display: flex;
  justify-content: center;
  padding: 20px;
}

.game-card {
  width: 100%;
  position: relative;
  max-width: 1000px;
  background: #1a1a1a;
  border-radius: 18px;
  padding: 30px 20px;
  text-align: center;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
}

.game-card h2 {
  font-size: 2rem;
  margin-bottom: 10px;
}

.game-card p {
  color: #bdbdbd;
}

.difficulty-buttons {
  margin: 24px 0 12px;
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.level-btn,
.primary-btn,
.secondary-btn {
  padding: 10px 18px;
  border: none;
  border-radius: 10px;
  background: #ffffff;
  color: #000000;
  font-weight: 600;
  cursor: pointer;
  transition: 0.3s ease;
}

.level-btn:hover,
.primary-btn:hover,
.secondary-btn:hover {
  background: #d9d9d9;
  transform: translateY(-2px);
}

.level-btn.active {
  background: #bfbfbf;
}

.level-info {
  min-height: 24px;
  margin-bottom: 16px;
  color: #cccccc;
  font-size: 0.95rem;
}

.action-buttons {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.hidden {
  display: none;
}

.simon-board {
  width: 320px;
  height: 320px;
  margin: 0 auto;
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  background: radial-gradient(circle at center, #262626 0%, #171717 38%, #0f0f0f 72%, #090909 100%);
  border-radius: 50%;
  padding: 14px;
  box-shadow: 
    inset 0 0 0 10px #0d0d0d,
    inset 0 10px 25px rgba(255, 255, 255, 0.03),
    inset 0 -12px 25px rgba(0, 0, 0, 0.45),
    0 16px 40px rgba(0, 0, 0, 0.4);
}

.pad {
  border: none;
  cursor: pointer;
  opacity: 0.78;
  transition: all 0.2s ease;
  outline: none;
  -webkit-appearance: none;
  appearance: none;
  filter: saturate(1.3) contrast(1.2);
  position: relative;
  overflow: hidden;
}

.pad::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom right, rgba(255,255,255,0.16), rgba(255,255,255,0.02));
  pointer-events: none;
}

.pad.green {
  background:
    linear-gradient(135deg, #79b58a 0%, #4f7d5f 45%, #3e624b 100%);
  border-top-left-radius: 100%;
  box-shadow:
    inset 0 6px 12px rgba(255,255,255,0.12),
    inset 0 -10px 14px rgba(0,0,0,0.22);
}

.pad.red {
  background:
    linear-gradient(135deg, #cb8181 0%, #9a5f5f 45%, #744747 100%);
  border-top-right-radius: 100%;
  box-shadow:
    inset 0 6px 12px rgba(255,255,255,0.12),
    inset 0 -10px 14px rgba(0,0,0,0.22);
}

.pad.yellow {
  background:
    linear-gradient(135deg, #dbc97f 0%, #b29d58 45%, #837542 100%);
  border-bottom-left-radius: 100%;
  box-shadow:
    inset 0 6px 12px rgba(255,255,255,0.12),
    inset 0 -10px 14px rgba(0,0,0,0.22);
}

.pad.blue {
  background:
    linear-gradient(135deg, #8ba8d0 0%, #6481ab 45%, #4a6284 100%);
  border-bottom-right-radius: 100%;
  box-shadow:
    inset 0 6px 12px rgba(255,255,255,0.12),
    inset 0 -10px 14px rgba(0,0,0,0.22);
}

.pad.active {
  opacity: 1;
  transform: scale(1.035);
  filter: brightness(1.18);
  box-shadow:
    0 0 18px rgba(255,255,255,0.22),
    0 0 42px rgba(255,255,255,0.14),
    inset 0 8px 16px rgba(255,255,255,0.18),
    inset 0 -8px 12px rgba(0,0,0,0.12);
}

.pad:not(.disabled):hover {
  opacity: 0.9;
  transform: scale(1.015);
}

.pad.disabled {
  pointer-events: none;
}

.center-display {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 104px;
  height: 104px;
  transform: translate(-50%, -50%);
  background:
    radial-gradient(circle at 35% 30%, #2c2c2c 0%, #171717 52%, #0c0c0c 100%);
  border-radius: 50%;
  border: 7px solid #1a1a1a;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  box-shadow:
    inset 0 6px 10px rgba(255,255,255,0.05),
    inset 0 -12px 16px rgba(0,0,0,0.4),
    0 6px 18px rgba(0,0,0,0.4);
}

.center-display::before {
  content: "";
  position: absolute;
  inset: 8px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.04);
  pointer-events: none;
}

.center-label {
  font-size: 0.7rem;
  color: #9a9a9a;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

#round {
  font-size: 1.8rem;
  font-weight: 700;
  color: #ffffff;
  line-height: 1.1;
}

.overlay {
  position: absolute;
  inset: 0;
  background: rgba(8, 8, 8, 0.72);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 18px;
  z-index: 20;
  padding: 20px;
}

.overlay-card {
  width: 100%;
  max-width: 320px;
  background: linear-gradient(180deg, #1f1f1f 0%, #141414 100%);
  border: 1px solid #2f2f2f;
  border-radius: 16px;
  padding: 24px 18px;
  text-align: center;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.35);
}

.overlay-card h3 {
  margin-bottom: 10px;
  color: #ffffff;
  font-size: 1.4rem;
}

.overlay-card p {
  color: #d0d0d0;
  margin-bottom: 18px;
}

.hidden {
  display: none;
}

.message {
  margin-top: 24px;
  padding: 16px 18px;
  border-radius: 12px;
  background: #111111;
  border: 1px solid #333333;
  color: #ffffff;
  font-weight: 600;
}

@media (max-width: 700px) {
  .game-card {
    padding: 24px 14px;
  }

  .simon-board {
    width: 280px;
    height: 280px;
  }

  .center-display {
    width: 92px;
    height: 92px;
  }

  #round {
    font-size: 1.5rem;
  }
}

@media (max-width: 500px) {
  .difficulty-buttons,
  .action-buttons {
    gap: 10px;
  }

  .level-btn,
  .primary-btn,
  .secondary-btn {
    padding: 9px 14px;
    font-size: 0.95rem;
  }

  .simon-board {
    width: 236px;
    height: 236px;
    gap: 10px;
    padding: 10px;
  }

  .center-display {
    width: 78px;
    height: 78px;
    border-width: 5px;
  }

  .center-label {
    font-size: 0.62rem;
  }

  #round {
    font-size: 1.3rem;
  }
}