* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top, #3f4f6f 0%, #1c2333 40%, #0d1118 100%);
  color: #f3f6fb;
  font-family: "Trebuchet MS", Verdana, sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 16px;
}

.hud,
.controls,
.code-guess {
  width: min(1280px, 100%);
}

.hud-row {
  display: flex;
  gap: 12px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.panel {
  background: rgba(8, 12, 20, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 14px;
  padding: 12px 16px;
  min-width: 150px;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.2);
}

.panel span {
  display: block;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #aebbd4;
}

.panel strong {
  display: block;
  margin-top: 5px;
  font-size: 22px;
}

.panel.large {
  flex: 1;
  min-width: 300px;
  display: flex;
  align-items: center;
  font-size: 15px;
}

#startButton {
  border: 0;
  border-radius: 14px;
  padding: 0 24px;
  background: linear-gradient(135deg, #ff7446, #ffc146);
  color: #181818;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  min-height: 60px;
}

#startButton:hover {
  filter: brightness(1.06);
}

#gameCanvas {
  width: min(1280px, 100%);
  aspect-ratio: 16 / 9;
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: linear-gradient(180deg, rgba(32, 43, 65, 0.92), rgba(14, 18, 28, 0.98));
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.35);
}

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}

.controls span {
  background: rgba(8, 12, 20, 0.66);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  padding: 8px 12px;
  font-size: 14px;
  color: #d5dcef;
}

.code-guess {
  background: rgba(8, 12, 20, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 14px;
  padding: 14px 16px;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.2);
}

.code-guess label {
  display: block;
  margin-bottom: 8px;
  font-size: 14px;
  color: #d5dcef;
}

.code-guess-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.code-guess input {
  flex: 1;
  min-width: 180px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.08);
  color: #f3f6fb;
  padding: 12px 14px;
  font-size: 16px;
}

.code-guess button {
  border: 0;
  border-radius: 10px;
  padding: 12px 18px;
  background: linear-gradient(135deg, #9eff86, #e7ff6c);
  color: #171717;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
}

.code-guess p {
  margin: 10px 0 0;
  color: #aebbd4;
  font-size: 14px;
}

@media (max-width: 900px) {
  body {
    padding: 10px;
  }

  .panel {
    min-width: 120px;
  }

  .panel strong {
    font-size: 18px;
  }

  #startButton {
    width: 100%;
  }
}