/* ==========================================================
   往復運動の運動力学インフォグラフィックス スタイルシート
   Reciprocating Motion Kinematics - Design System & Styles
   ========================================================== */

:root {
  /* カラーパレット (Dark Mode Default) */
  --bg-primary: #0a0e17;
  --bg-secondary: #111827;
  --bg-tertiary: #1a2234;
  --card-bg: rgba(18, 25, 41, 0.75);
  --card-border: rgba(255, 255, 255, 0.08);
  --card-hover-border: rgba(255, 255, 255, 0.18);
  
  --text-primary: #f3f4f6;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  
  /* プロファイル別ブランドカラー */
  --color-v: #00e5ff;       /* 速度一定: シアン/ネオンシアン */
  --color-v-glow: rgba(0, 229, 255, 0.35);
  --color-a: #fbbf24;       /* 加速度一定: アンバー */
  --color-a-glow: rgba(251, 191, 36, 0.35);
  --color-j: #10b981;       /* 加加速度一定: エメラルドグリーン */
  --color-j-glow: rgba(16, 185, 129, 0.35);
  --color-h: #d946ef;       /* 単振動: マゼンタ */
  --color-h-glow: rgba(217, 70, 239, 0.35);

  --accent-blue: #3b82f6;
  --accent-red: #ef4444;
  --accent-green: #10b981;

  --font-sans: 'Inter', 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'Fira Code', monospace;

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.5);

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-full: 9999px;

  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
}

/* Light Theme Variables */
body.theme-light {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f1f5f9;
  --card-bg: rgba(255, 255, 255, 0.85);
  --card-border: rgba(0, 0, 0, 0.08);
  --card-hover-border: rgba(0, 0, 0, 0.16);

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;

  --color-v: #0284c7;
  --color-v-glow: rgba(2, 132, 199, 0.25);
  --color-a: #d97706;
  --color-a-glow: rgba(217, 119, 6, 0.25);
  --color-j: #059669;
  --color-j-glow: rgba(5, 150, 105, 0.25);
  --color-h: #c026d3;
  --color-h-glow: rgba(192, 38, 211, 0.25);

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.12);
}

/* リセット＆基本設定 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 15px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* 背景グリッドエフェクト */
.bg-pattern {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-image: 
    radial-gradient(circle at 50% 10%, rgba(59, 130, 246, 0.08), transparent 45%),
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 100% 100%, 32px 32px, 32px 32px;
  pointer-events: none;
  z-index: 0;
}

body.theme-light .bg-pattern {
  background-image: 
    radial-gradient(circle at 50% 10%, rgba(59, 130, 246, 0.04), transparent 45%),
    linear-gradient(rgba(0, 0, 0, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 0, 0, 0.02) 1px, transparent 1px);
}

.font-mono {
  font-family: var(--font-mono);
}

.hidden {
  display: none !important;
}

/* グラスモーフィズムカード共通 */
.glass-card {
  background: var(--card-bg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.glass-card:hover {
  border-color: var(--card-hover-border);
}

/* ヘッダー */
.app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 14, 23, 0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--card-border);
  padding: 1rem 1.5rem;
}

body.theme-light .app-header {
  background: rgba(248, 250, 252, 0.85);
}

.header-container {
  max-width: 1440px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--color-v);
  background: rgba(0, 229, 255, 0.1);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  margin-bottom: 0.3rem;
  border: 1px solid rgba(0, 229, 255, 0.25);
}

.brand-title {
  font-size: 1.45rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #ffffff 40%, #9ca3af 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

body.theme-light .brand-title {
  background: linear-gradient(135deg, #0f172a 40%, #475569 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-subtitle {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* ボタン群 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-md);
  padding: 0.5rem 1rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn .icon {
  width: 18px;
  height: 18px;
}

.btn-primary {
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.35);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #3b82f6, #2563eb);
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(37, 99, 235, 0.45);
}

.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--card-border);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--card-hover-border);
}

.btn-icon {
  padding: 0.5rem;
  width: 38px;
  height: 38px;
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
}

.btn-icon:hover {
  background: rgba(255, 255, 255, 0.1);
}

.sun-icon { display: block; }
.moon-icon { display: none; }
body.theme-light .sun-icon { display: none; }
body.theme-light .moon-icon { display: block; }

.btn-chip {
  padding: 0.25rem 0.65rem;
  font-size: 0.78rem;
  border-radius: var(--radius-sm);
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  border: 1px solid var(--card-border);
}

.btn-chip:hover {
  color: var(--text-primary);
}

.btn-chip.active {
  background: var(--accent-blue);
  color: #ffffff;
  border-color: var(--accent-blue);
  box-shadow: 0 2px 8px rgba(59, 130, 246, 0.4);
}

.btn-sm {
  font-size: 0.75rem;
  padding: 0.3rem 0.7rem;
}

/* メインコンテンツレイアウト */
.main-content {
  max-width: 1440px;
  margin: 1.5rem auto;
  padding: 0 1.5rem 3rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
  position: relative;
  z-index: 1;
}

/* 1. コントロールパネル */
.control-panel {
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.playback-controls {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.timeline-container {
  flex: 1;
  min-width: 280px;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.time-label-group {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  font-size: 0.85rem;
}

.label-name {
  color: var(--text-muted);
  font-weight: 500;
}

.value-text {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-v);
}

.value-sub {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.slider-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-full);
  outline: none;
  cursor: pointer;
  transition: background var(--transition-fast);
}

body.theme-light input[type="range"] {
  background: rgba(0, 0, 0, 0.1);
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #ffffff;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4), 0 0 0 2px var(--accent-blue);
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.2);
  box-shadow: 0 2px 10px rgba(59, 130, 246, 0.6), 0 0 0 3px var(--accent-blue);
}

.speed-selector {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-group {
  display: inline-flex;
  gap: 0.25rem;
  background: rgba(0, 0, 0, 0.2);
  padding: 0.2rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--card-border);
}

body.theme-light .btn-group {
  background: rgba(0, 0, 0, 0.04);
}

/* パラメータバー */
.parameters-panel {
  display: flex;
  align-items: center;
  gap: 2rem;
  flex-wrap: wrap;
  padding-top: 0.85rem;
  border-top: 1px solid var(--card-border);
}

.param-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.85rem;
}

.param-item label {
  color: var(--text-secondary);
  font-weight: 500;
}

.param-item input[type="range"] {
  width: 120px;
}

.param-val {
  min-width: 55px;
  font-weight: 600;
  color: var(--text-primary);
}

/* スイッチトグル */
.switch-label {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  cursor: pointer;
  user-select: none;
}

.switch-label input {
  display: none;
}

.switch-slider {
  width: 36px;
  height: 20px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-full);
  position: relative;
  transition: background var(--transition-fast);
}

body.theme-light .switch-slider {
  background: rgba(0, 0, 0, 0.15);
}

.switch-slider::before {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  left: 2px;
  top: 2px;
  background: #ffffff;
  border-radius: 50%;
  transition: transform var(--transition-fast);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.3);
}

.switch-label input:checked + .switch-slider {
  background: var(--accent-blue);
}

.switch-label input:checked + .switch-slider::before {
  transform: translateX(16px);
}

.switch-text {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* セクションヘッダー共通 */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}

.section-title {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
}

.icon-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-v);
  box-shadow: 0 0 10px var(--color-v);
}

.icon-dot.green {
  background: var(--color-j);
  box-shadow: 0 0 10px var(--color-j);
}

.icon-dot.orange {
  background: var(--color-a);
  box-shadow: 0 0 10px var(--color-a);
}

.section-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.2rem;
}

.badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-sm);
  margin-left: 0.3rem;
}

.badge-const-v { background: rgba(0, 229, 255, 0.15); color: var(--color-v); border: 1px solid rgba(0, 229, 255, 0.3); }
.badge-const-a { background: rgba(251, 191, 36, 0.15); color: var(--color-a); border: 1px solid rgba(251, 191, 36, 0.3); }
.badge-const-j { background: rgba(16, 185, 129, 0.15); color: var(--color-j); border: 1px solid rgba(16, 185, 129, 0.3); }
.badge-harmonic { background: rgba(217, 70, 239, 0.15); color: var(--color-h); border: 1px solid rgba(217, 70, 239, 0.3); }

/* 2. シミュレーションセクション (Track & Cart) */
.simulation-section {
  padding: 1.5rem;
}

.motion-tracks-container {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.track-row {
  display: grid;
  grid-template-columns: 370px 1fr;
  gap: 1.5rem;
  align-items: center;
  background: rgba(0, 0, 0, 0.25);
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--card-border);
  transition: all var(--transition-fast);
}

body.theme-light .track-row {
  background: rgba(0, 0, 0, 0.02);
}

.track-row:hover {
  background: rgba(0, 0, 0, 0.35);
  border-color: var(--card-hover-border);
}

body.theme-light .track-row:hover {
  background: rgba(0, 0, 0, 0.04);
}

.profile-tag {
  font-size: 0.88rem;
  font-weight: 700;
  margin-bottom: 0.6rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.tag-const-v { color: var(--color-v); }
.tag-const-a { color: var(--color-a); }
.tag-const-j { color: var(--color-j); }
.tag-harmonic { color: var(--color-h); }

.metrics-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.4rem 0.75rem;
  font-size: 0.75rem;
}

.metric-cell {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(255, 255, 255, 0.03);
  padding: 0.3rem 0.55rem;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  min-height: 28px;
  box-sizing: border-box;
}

body.theme-light .metric-cell {
  background: rgba(0, 0, 0, 0.03);
}

.metric-lbl {
  color: var(--text-muted);
  white-space: nowrap;
  flex-shrink: 0;
}

.metric-val {
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  text-align: right;
  min-width: 6.5ch;
  flex-shrink: 0;
}

.shock-cell .metric-val {
  min-width: 9.5ch; /* -800 mm/s³ や 破壊的衝撃 が改行なくすっぽり収まる十分な幅 */
}

.shock-badge {
  background: rgba(239, 68, 68, 0.2);
  color: #f87171;
  padding: 0.1rem 0.4rem;
  border-radius: 4px;
  font-weight: 700;
  font-size: 0.7rem;
  white-space: nowrap;
  text-align: center;
  display: inline-block;
}

.smooth-badge {
  background: rgba(16, 185, 129, 0.2);
  color: #34d399;
  padding: 0.1rem 0.4rem;
  border-radius: 4px;
  font-weight: 700;
  font-size: 0.7rem;
  white-space: nowrap;
  text-align: center;
  display: inline-block;
}

/* レールとキャリッジ */
.track-rail-wrapper {
  position: relative;
  padding: 1.5rem 0 1rem 0;
}

.track-rail {
  position: relative;
  height: 48px;
  background: linear-gradient(180deg, #1e293b, #0f172a);
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
}

body.theme-light .track-rail {
  background: linear-gradient(180deg, #e2e8f0, #cbd5e1);
  border-color: rgba(0, 0, 0, 0.1);
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.15);
}

/* ガイド目盛り */
.rail-scale {
  position: absolute;
  top: -18px;
  left: 30px;
  right: 30px;
  display: flex;
  justify-content: space-between;
  font-size: 0.7rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.stroke-bound {
  position: absolute;
  width: 4px;
  height: 100%;
  background: rgba(255, 255, 255, 0.3);
  top: 0;
}

.left-bound { left: 30px; }
.right-bound { right: 30px; }

/* キャリッジ（台車） */
.carriage-cart {
  position: absolute;
  left: 30px; /* JSで left を更新: 30px ~ (width - 30px - cartWidth) */
  width: 80px;
  height: 38px;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
  pointer-events: none;
  transition: filter 0.05s ease;
}

.cart-body {
  width: 100%;
  height: 100%;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  color: #ffffff;
  position: relative;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.carriage-v .cart-body {
  background: linear-gradient(135deg, #0284c7, #0369a1);
  border-color: var(--color-v);
  box-shadow: 0 0 14px var(--color-v-glow);
}

.carriage-a .cart-body {
  background: linear-gradient(135deg, #d97706, #b45309);
  border-color: var(--color-a);
  box-shadow: 0 0 14px var(--color-a-glow);
}

.carriage-j .cart-body {
  background: linear-gradient(135deg, #059669, #047857);
  border-color: var(--color-j);
  box-shadow: 0 0 14px var(--color-j-glow);
}

.carriage-h .cart-body {
  background: linear-gradient(135deg, #c026d3, #a21caf);
  border-color: var(--color-h);
  box-shadow: 0 0 14px var(--color-h-glow);
}

.cart-label {
  font-size: 0.72rem;
  letter-spacing: -0.02em;
}

/* 搭載ワーク (残留振動シミュレーション) */
.cart-payload {
  position: absolute;
  top: -26px;
  left: 50%;
  transform: translateX(-50%);
  width: 24px;
  height: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.payload-mass {
  width: 18px;
  height: 18px;
  background: #f43f5e;
  border-radius: 4px;
  border: 2px solid #ffffff;
  box-shadow: 0 2px 6px rgba(0,0,0,0.4);
  transform: translateX(0px); /* JSで振動変位を反映 */
  transition: transform 0.016s linear;
}

.payload-spring {
  width: 2px;
  height: 8px;
  background: rgba(255, 255, 255, 0.6);
}

/* ショックウェーブ（反転・Jerkスパイク時） */
.shock-wave {
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: var(--radius-sm);
  border: 3px solid #ef4444;
  opacity: 0;
  pointer-events: none;
  transform: scale(1);
}

.shock-wave.active {
  animation: shockPulse 0.4s cubic-bezier(0.1, 0.9, 0.2, 1);
}

@keyframes shockPulse {
  0% { transform: scale(1); opacity: 1; border-color: #f87171; }
  100% { transform: scale(1.8); opacity: 0; border-color: #ef4444; }
}

.smooth-glow {
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: var(--radius-sm);
  box-shadow: 0 0 20px var(--color-j);
  opacity: 0.3;
}

/* 3. 連動グラフセクション */
.charts-section {
  padding: 1.5rem;
}

.chart-view-options {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.legend-items {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.legend-chip {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.chip-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.chip-v .chip-dot { background: var(--color-v); box-shadow: 0 0 6px var(--color-v); }
.chip-a .chip-dot { background: var(--color-a); box-shadow: 0 0 6px var(--color-a); }
.chip-j .chip-dot { background: var(--color-j); box-shadow: 0 0 6px var(--color-j); }
.chip-h .chip-dot { background: var(--color-h); box-shadow: 0 0 6px var(--color-h); }

.charts-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

@media (max-width: 960px) {
  .charts-grid {
    grid-template-columns: 1fr;
  }
}

.chart-card {
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

body.theme-light .chart-card {
  background: rgba(0, 0, 0, 0.02);
}

.chart-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.chart-card-title {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
}

.axis-symbol {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.05rem;
  color: #ffffff;
}

body.theme-light .axis-symbol {
  color: #0f172a;
}

.axis-name {
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.current-value-tag {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent-blue);
  background: rgba(59, 130, 246, 0.12);
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(59, 130, 246, 0.25);
}

.canvas-container {
  position: relative;
  width: 100%;
  height: 200px;
  background: rgba(10, 14, 23, 0.5);
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.05);
  overflow: hidden;
}

body.theme-light .canvas-container {
  background: rgba(255, 255, 255, 0.6);
  border-color: rgba(0, 0, 0, 0.06);
}

.canvas-container canvas {
  width: 100%;
  height: 100%;
  display: block;
}

/* タイムライン追従垂直カーソルライン */
.chart-cursor-line {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0; /* JSで left を更新 */
  width: 2px;
  background: rgba(255, 255, 255, 0.85);
  box-shadow: 0 0 8px rgba(255, 255, 255, 0.8);
  pointer-events: none;
  z-index: 5;
  transition: none;
}

body.theme-light .chart-cursor-line {
  background: #2563eb;
  box-shadow: 0 0 8px rgba(37, 99, 235, 0.6);
}

.chart-card-footer {
  font-size: 0.74rem;
  color: var(--text-muted);
}

/* 4. インフォグラフィック比較表 */
.infographic-section {
  padding: 1.5rem;
}

.comparison-table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--card-border);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  text-align: left;
}

.comparison-table th {
  background: rgba(255, 255, 255, 0.04);
  padding: 0.9rem 1rem;
  font-weight: 700;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--card-border);
  white-space: nowrap;
}

body.theme-light .comparison-table th {
  background: rgba(0, 0, 0, 0.03);
}

.comparison-table td {
  padding: 1rem;
  border-bottom: 1px solid var(--card-border);
  vertical-align: middle;
}

.table-profile-cell {
  display: flex;
  flex-direction: column;
  position: relative;
  padding-left: 14px;
}

.color-indicator {
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 4px;
  border-radius: 2px;
}

.bg-v { background: var(--color-v); }
.bg-a { background: var(--color-a); }
.bg-j { background: var(--color-j); }
.bg-h { background: var(--color-h); }

.badge-math {
  display: inline-block;
  font-size: 0.72rem;
  color: var(--text-muted);
}

.val-highlight {
  color: var(--text-primary);
  font-weight: 700;
}

.val-alert {
  color: #f87171;
  font-weight: 700;
}

.val-success {
  color: #34d399;
  font-weight: 700;
}

.sub-text {
  font-size: 0.72rem;
  color: var(--text-muted);
}

/* 5. ディープダイブセクション */
.deepdive-section {
  padding: 1.75rem;
}

.deepdive-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

@media (max-width: 900px) {
  .deepdive-grid {
    grid-template-columns: 1fr;
  }
}

.deepdive-card {
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  padding: 1.4rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  position: relative;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

body.theme-light .deepdive-card {
  background: rgba(0, 0, 0, 0.02);
}

.deepdive-card:hover {
  transform: translateY(-2px);
  border-color: var(--card-hover-border);
}

.card-icon-badge {
  font-size: 1.6rem;
}

.deepdive-card h3 {
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.4;
}

.deepdive-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.deepdive-card strong {
  color: var(--text-primary);
}

/* モーダル */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 1.5rem;
  opacity: 1;
  transition: opacity var(--transition-normal);
}

.modal-content {
  max-width: 650px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  padding: 1.75rem;
  position: relative;
  background: var(--bg-secondary);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
  border-bottom: 1px solid var(--card-border);
  padding-bottom: 0.75rem;
}

.modal-header h2 {
  font-size: 1.2rem;
  font-weight: 700;
}

.modal-body {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.guide-item h4 {
  font-size: 0.95rem;
  color: var(--color-v);
  margin-bottom: 0.3rem;
}

.guide-item p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* フッター */
.app-footer {
  text-align: center;
  padding: 2rem 1.5rem;
  color: var(--text-muted);
  font-size: 0.8rem;
  border-top: 1px solid var(--card-border);
}

/* レスポンシブ微調整 */
@media (max-width: 768px) {
  .track-row {
    grid-template-columns: 1fr;
    gap: 0.8rem;
  }

  .header-container {
    flex-direction: column;
    align-items: flex-start;
  }

  .brand-title {
    font-size: 1.25rem;
  }

  .control-panel {
    padding: 1rem;
  }
}