/* 全体レイアウト */
body {
  margin: 0;
  background-color: #000;
  color: #fff;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

.app-container {
  max-width: 1200px;
  margin: 4px auto 16px;
  padding: 4px 10px;
}

/* ヘッダー */
.app-header {
  margin-bottom: 4px;
}

.app-title {
  margin: 0;
  font-size: 1.7rem;
  font-family: "JetBrains Mono", "Fira Code", "Source Code Pro", monospace;
  letter-spacing: 0.08em;
}

/* セクションカード */
.section-card {
  border: 1px solid #fff;
  border-radius: 8px;
  padding: 6px 8px 8px;
  margin-top: 6px;
  background: radial-gradient(circle at top left, #181818 0, #050505 55%, #000 100%);
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.05);
}

.section-title-row {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin-bottom: 4px;
}

.section-title {
  font-size: 0.9rem;
  font-weight: 600;
  font-family: "JetBrains Mono", "Fira Code", "Source Code Pro", monospace;
}

.section-subtitle {
  font-size: 0.72rem;
  opacity: 0.7;
}

/* コントロール行・列 */
.controls-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px 12px;
  margin: 2px 0;
}

.controls-column {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

label {
  font-size: 0.8rem;
  display: flex;
  align-items: center;
  gap: 4px;
}

.slider-label {
  min-width: 180px;
  flex-direction: column;
  align-items: flex-start;
}

.value-label {
  font-variant-numeric: tabular-nums;
  font-family: "JetBrains Mono", "Fira Code", "Source Code Pro", monospace;
  font-size: 0.75rem;
}

/* ボタン */
button {
  padding: 2px 8px;
  background-color: #111;
  color: #fff;
  border: 1px solid #fff;
  cursor: pointer;
  font-size: 0.78rem;
  border-radius: 4px;
  transition: background-color 0.15s, color 0.15s, box-shadow 0.15s;
}

button:hover {
  background-color: #fff;
  color: #000;
  box-shadow: 0 0 8px rgba(209, 97, 255, 0.6);
}

button:disabled {
  opacity: 0.5;
  cursor: default;
  box-shadow: none;
}

/* セレクトボックス */
select {
  background-color: #000;
  color: #fff;
  border: 1px solid #fff;
  padding: 2px 4px;
  font-size: 0.78rem;
  border-radius: 4px;
}

/* スライダー */
input[type="range"] {
  width: 150px;
}

input[type="range"]::-webkit-slider-thumb {
  background: #d161ff;
}
input[type="range"]::-moz-range-thumb {
  background: #d161ff;
}
input[type="range"]::-webkit-slider-runnable-track,
input[type="range"]::-moz-range-track {
  background: #eee;
}

/* チェックボックス系ラベル */
.map-label {
  font-size: 0.78rem;
  font-weight: 600;
}

/* Life Game キャンバス */
.life-row {
  display: flex;
  justify-content: center;
}

#lifeCanvas {
  border: 2px solid #0f0;
  background-color: #000;
}

/* Life Game ボタン中央揃え */
.life-controls {
  justify-content: center;
  margin-top: 4px;
}

/* 2 カラムレイアウト（Mapping より下） */
.two-column {
  display: flex;
  gap: 8px;
  margin-top: 6px;
}

.column {
  flex: 1;
  min-width: 0;
}

/* ===== タブレット・狭い画面向け ===== */
@media (max-width: 900px) {
  .app-container {
    max-width: 100%;
    margin: 0 auto 10px;
    padding: 4px 6px 10px;
  }

  .app-title {
    font-size: 1.4rem;
  }

  .section-card {
    padding: 6px 6px 8px;
    margin-top: 5px;
  }

  .controls-row {
    flex-direction: column;
    align-items: flex-start;
  }

  .slider-label {
    min-width: 0;
    width: 100%;
  }

  #lifeCanvas {
    width: 320px;
    height: 320px;
  }

  .two-column {
    flex-direction: column;
  }
}