* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  overflow: hidden;
  background: #1a1a1a;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  touch-action: none;
  /* ズーム除外 */
  touch-action: pinch-zoom;
}

canvas {
  display: block;
  cursor: default;
  /* キャンバスのみピンチズーム対応 */
  touch-action: none;
}

/* 情報パネル */
.info-panel {
  position: fixed;
  right: 20px;
  bottom: 40px;
  background: rgba(30, 30, 30, 0.95);
  border: 2px solid #444;
  border-radius: 12px;
  padding: 16px;
  color: #fff;
  font-size: 14px;
  min-width: 200px;
  max-width: 220px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
  z-index: 100;
  /* HTMLパネルはズーム除外 */
  touch-action: auto;
}

/* 画面幅が狭い時の対応 */
@media (max-width: 768px) or (max-height: 600px) {
  .info-panel {
    right: 10px;
    bottom: 50px;
    min-width: 160px;
    max-width: 180px;
    padding: 12px;
    font-size: 12px;
  }

  .info-value {
    font-size: 13px;
  }

  .info-unit {
    font-size: 10px;
  }
}

/* ボタン */
#startResetBtn,
#pauseBtn {
  width: 100%;
  padding: 10px;
  background: rgba(74, 144, 226, 0.9);
  color: white;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 14px;
  font-weight: bold;
  margin-bottom: 16px;
  transition: background 0.2s;
}

#pauseBtn {
  margin-bottom: 16px;
  background: rgba(90, 90, 90, 0.9);
}

#startResetBtn:hover,
#pauseBtn:hover {
  background: rgba(74, 144, 226, 1);
}

#pauseBtn:hover {
  background: rgba(110, 110, 110, 1);
}

#startResetBtn:active,
#pauseBtn:active {
  background: rgba(74, 144, 226, 0.8);
}

#pauseBtn:active {
  background: rgba(90, 90, 90, 0.8);
}

/* 重力加速度除外チェックボックス */
.gravity-mode {
  margin-bottom: 16px;
  padding: 8px;
  background: rgba(74, 144, 226, 0.1);
  border-radius: 6px;
  border-left: 3px solid #4a90e2;
}

.gravity-mode label {
  display: flex;
  align-items: center;
  cursor: pointer;
  font-size: 12px;
  user-select: none;
}

.gravity-mode input[type="checkbox"] {
  margin-right: 8px;
  cursor: pointer;
}

/* 角度表示モード選択 */
.angle-mode,
.vector-mode {
  margin-bottom: 16px;
  padding: 8px;
  background: rgba(74, 144, 226, 0.1);
  border-radius: 6px;
  border-left: 3px solid #4a90e2;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.angle-mode label,
.vector-mode label {
  display: flex;
  align-items: center;
  cursor: pointer;
  font-size: 12px;
  user-select: none;
}

.angle-mode input[type="radio"],
.vector-mode input[type="radio"] {
  margin-right: 8px;
  cursor: pointer;
}

/* 情報セクション */
.acceleration-info {
  background: rgba(0, 0, 0, 0.3);
  padding: 12px;
  border-radius: 6px;
  border: 1px solid #444;
}

.info-label {
  color: #4a90e2;
  font-weight: bold;
  font-size: 14px;
  margin-bottom: 8px;
  border-bottom: 1px solid #444;
  padding-bottom: 6px;
}

.info-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 6px 0;
  font-size: 13px;
}

.info-key {
  color: #aaa;
  min-width: 40px;
}

.info-value {
  color: #fff;
  font-family: 'Courier New', monospace;
  text-align: right;
  min-width: 60px;
}

.info-value.blue {
  color: #4a90e2;
  font-weight: bold;
}

.info-unit {
  color: #666;
  font-size: 11px;
  margin-left: 4px;
  min-width: 40px;
}

/* スクリーンショットボタン */
.screenshot-btn {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 50px;
  height: 50px;
  background: rgba(74, 144, 226, 0.9);
  color: white;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  z-index: 99;
  transition: background 0.2s;
  /* ボタンはズーム除外 */
  touch-action: auto;
}

.screenshot-btn:hover {
  background: rgba(74, 144, 226, 1);
}

.screenshot-btn:active {
  background: rgba(80, 200, 120, 0.9);
}

/* 説明バナー */
.instruction-banner {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(30, 30, 30, 0.95);
  border: 2px solid #4a90e2;
  border-radius: 8px;
  padding: 12px 20px;
  color: #fff;
  font-size: 13px;
  z-index: 101;
  max-width: 90%;
  text-align: center;
  transition: all 0.4s ease-out;
  animation: slideDown 0.4s ease-out;
  /* バナーはズーム除外 */
  touch-action: auto;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}

.instruction-banner.hidden {
  opacity: 0;
  pointer-events: none;
  transform: translateX(-50%) translateY(-20px);
}

.instruction-text {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.icon-blue {
  color: #4a90e2;
  font-weight: bold;
}

.separator {
  color: #555;
}

/* 最終更新表示 */
.last-updated {
  position: fixed;
  bottom: 10px;
  left: 10px;
  font-size: 11px;
  color: #666;
  font-family: 'Courier New', monospace;
  z-index: 50;
  /* テキストもズーム除外 */
  touch-action: auto;
}