/* ===== common.css (scoped) ===== */

:root {
  --font-body: 'Kosugi Maru', 'Noto Sans JP', sans-serif;
  --font-heading: var(--font-body);
  --font-main: var(--font-body);
  /* Theming variables */
  --color-primary: #ff9900;
  --color-primary-dark: #e57c00;
  --color-accent: #FFD44C;
  --color-background: #fff8f0;
  --color-night-bg: #1a1a2a;
  --color-night-text: #f0f0f0;
}

/* デフォルト：モバイルファースト（スクロール許可） */
.app-root {
  font-family: var(--font-body);
  margin: 0;
  padding: 0;
  background: var(--color-background);
  overflow-x: hidden;
  overflow-y: auto; /* ← モバイルでスクロールできるように */
}

body,
#app {
  margin: 0;
  padding: 0;
}

html,
body {
  overflow-x: hidden;
}

.app-root.morning {
  background: var(--color-background);
}


.app-root.noon {
  background: #e6f7ff;
}

.app-root.evening {
  background: #ffe8cc;
}

.app-root.night {
  background: var(--color-night-bg);
  color: var(--color-night-text);
  /* Night theme previously enforced white text globally which caused
     readability issues on light elements. Text color is now left
     unchanged so individual screens can style themselves. */
}

body.intro-scroll {
  background: linear-gradient(to bottom,
    #ffffff 0%,
    #fff6f6 20%,
    #fff0f5 40%,
    #fef0ff 60%,
    #f0f8ff 100%
  );
}

body.info-bg {
  background: #fff;
}

/* ヘッダー表示時に余白を確保 */
#app.with-header,
body.with-header {
  padding-top: 56px;
  overflow-x: hidden;
}

/* .screen の基本レイアウト */
.screen {
  max-width: 960px;
  margin: 0 auto; /* 上部余白は #app.with-header に委任 */
  padding: 16px;
  width: 100%;
  box-sizing: border-box;
}

/* PC版で横幅いっぱいに使う画面 */
@media (min-width: 768px) {
  .settings-screen,
  .summary-screen,
  .result-screen,
  .mypage-screen {
    max-width: none;
    margin: 0;
  }
}

/* 見出し統一（任意） */
.screen h1,
.screen h2 {
  font-family: var(--font-heading);
  text-align: center;
  margin-bottom: 1em;
}

/* ボタン・セレクトの統一 */
button, select {
  font-family: inherit;
  font-size: 1em;
  padding: 6px 12px;
  border-radius: 6px;
  border: 1px solid #ccc;
  background: #f8f8f8;
  cursor: pointer;
}

button:hover {
  background: #eee;
}

/* 共通ユーティリティ */
.u-text-center {
  text-align: center;
}

.u-mt-2 {
  margin-top: 2em;
}

.u-hidden {
  display: none !important;
}

/* PC版のみ：app-root はスクロールさせず、.screen に任せる */
@media (min-width: 768px) {
  .app-root {
    overflow-y: auto;
  }

  .screen {
    height: auto;
    overflow-y: visible;
  }
}

/* Password visibility toggle */
.password-wrapper {
  position: relative;
}

.password-wrapper input {
  width: 100%;
  padding-right: 2.5rem;
  box-sizing: border-box;
}

.password-wrapper .toggle-password {
  position: absolute;
  top: 50%;
  right: 0.6rem;
  transform: translateY(-50%);
  width: 24px;
  height: 24px;
  cursor: pointer;
  z-index: 1;
}

/* Modal styles */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
}

.modal.hidden {
  display: none;
}

.modal-box {
  background: #fff;
  padding: 1.5em;
  border-radius: 10px;
  max-height: 90vh;
  overflow-y: auto;
  text-align: center;
}

.modal-title {
  margin: 0 0 0.5em;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.3em;
}

.modal-buttons {
  margin-top: 1em;
}

.modal-buttons button {
  margin: 0 0.5em;
}

/* Ensure help modal overlays other modals */
#help-modal {
  z-index: 1100;
}

/* Help modal specific */
#help-modal .modal-content {
  background: #fff;
  padding: 1.5em;
  max-width: 480px;
  border-radius: 20px;
  max-height: 90vh;
  overflow-y: auto;
  box-sizing: border-box;
}

#help-modal .modal-scroll {
  flex: 1 1 auto;
  
}

/* remove speech bubble arrow */
#help-modal .modal-content::before {
  display: none;
}

#help-modal .close {
  cursor: pointer;
  position: absolute;
  top: 10px;
  right: 10px;
  font-size: 1.2rem;
  background: #fff;
  width: 1.8em;
  height: 1.8em;
  line-height: 1.8em;
  border-radius: 50%;
  text-align: center;
}

#help-modal table {
  width: 100%;
  border-collapse: collapse;
}

#help-modal td {
  padding: 4px 8px;
  border-bottom: 1px solid #ccc;
}


.help-button {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: transparent;
  border: none;
  cursor: pointer;
  font-size: 1.2em;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  line-height: 1;
  vertical-align: middle;
}

.header-title-line .help-button {
  transform: translateX(-0.5em);
}

.help-button img {
  width: 100%;
  height: auto;
}

#help-modal .help-otolon {
  flex: 0 0 auto;
  width: 60px;
  height: auto;
}

#help-modal .help-header {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5em;
}

#help-modal .help-main {
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

#help-modal .help-body {
  flex: 1 1 auto;
}

.growth-title-row {
  display: flex;
  align-items: center;
  justify-content: center;
}



/* ✅ 和音サークル共通 */
.growth-chord-circle {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  width: 72px;
  height: 36px;
  border-radius: 9999px;
  margin: 0 auto;
  border: 2px solid #aaa;
  cursor: pointer;
  line-height: normal;
  text-align: center;
  font-size: 0.9em;
  transition: background-color 0.3s ease;
}

/* ✅ 未解放状態（白） */
.growth-locked {
  background-color: white;
}

/* 解放された黒鍵転回形の枠線色 */
.growth-unlocked-inv {
  border-color: green;
}

/* ✅ 転回形で解放済みのチェックマーク（白背景＋✅） */

/* ✅ 色つき和音（名前＝クラス名と一致） */
.aka { background-color: red; }
.kiiro { background-color: gold; }
.ao { background-color: blue; }
.kuro { background-color: black; color: white; }
.midori { background-color: green; }
.orenji { background-color: orange; }
.murasaki { background-color: purple; }
.pinku { background-color: pink; }
.chairo { background-color: sienna; }
.kigreen { background-color: yellowgreen; }
.usudaidai { background-color: #f4a460; }
.fujiiro { background-color: #dda0dd; }
.haiiro { background-color: gray; }
.mizuiro { background-color: skyblue; }

/* 🔓 解放ボタン */
.unlock-button {
  position: relative;
  width: 200px;
  height: 60px;
  background: #ff6666;
  color: white;
  font-weight: bold;
  font-size: 18px;
  border-radius: 20px;
  text-align: center;
  line-height: 60px;
  user-select: none;
  overflow: hidden;
  cursor: pointer;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.unlock-button .progress {
  position: absolute;
  left: 0;
  bottom: 0;
  height: 100%;
  width: 0%;
  background: rgba(255, 255, 255, 0.3);
  transition: width 0s;
}
/* ⭐ 育成進捗バー */
.progress-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  margin: 1.5em auto;
}

.growth-progress {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.5em;
  padding: 0.25em 0.5em;
  border: 2px solid #5b4636;
  border-radius: 12px;
  background-color: #fffafc;
  background-image: radial-gradient(#ffe6f0 1.5px, transparent 1.5px);
  background-size: 10px 10px;
  width: 100%;
  box-sizing: border-box;
}

.progress-track {
  position: relative;
  display: flex;
  align-items: flex-end;
  flex: 1;
  gap: 12px;
  margin-left: auto;
}

.step {
  width: 48px;
  height: 26px;
  border-radius: 50%/30%;
  background-color: #ffffff;
  border: 1px solid #ccc;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.step.filled {
  background-color: #d1eaff;
}

.walker {
  position: absolute;
  bottom: 26px;
  width: 48px;
  transform: translateX(-50%);
  pointer-events: none;
}

.goal {
  font-size: 24px;
}

/* === すごろく形式 === */
.sugoroku-board {
  position: relative;
  width: 100%;
  max-width: 560px;
  margin: 2em auto;
}

.sugoroku-line {
  position: absolute;
  top: 26px;
  left: 0;
  width: 100%;
  height: 60px;
  pointer-events: none;
}

.sugoroku-cells {
  display: flex;
  justify-content: center;
  gap: 8px;
  position: relative;
  padding: 0 0;
}

.sugoroku-cell {
  width: 60px;
  height: 48px;
  border-radius: 50%;
  border: 2px solid #5b4636;
  font-weight: bold;
  font-size: 0.9em;
  color: #5b4636;
  display: flex;
  justify-content: center;
  align-items: center;
  box-sizing: border-box;
}

.sugoroku-cell.start,
.sugoroku-cell.goal {
  border-radius: 12px;
}

.sugoroku-cell:nth-child(odd) {
  background-color: #d9f1ff;
  
}

.sugoroku-cell:nth-child(even) {
  background-color: #ffe6f0;
}
.sugoroku-cell:nth-child(1) { margin-top: 32px; }
.sugoroku-cell:nth-child(2) { margin-top: 38px; }
.sugoroku-cell:nth-child(3) { margin-top: 26px; }
.sugoroku-cell:nth-child(4) { margin-top: 38px; }
.sugoroku-cell:nth-child(5) { margin-top: 26px; }
.sugoroku-cell:nth-child(6) { margin-top: 38px; }
.sugoroku-cell:nth-child(7) { margin-top: 26px; }

.sugoroku-cell:nth-child(8) { margin-top: 32px; }

.sugoroku-cell.start {
  /* より濃い青色でスタート地点を強調 */
  background-color: #00008b;
  color: #fff;
  position: relative;
  width: 72px;
  white-space: nowrap;
}

.sugoroku-cell.goal {
  background-color: #ff4d4d;
  color: #fff;
  position: relative;
  width: 72px;
  white-space: nowrap;
}

.sugoroku-walker {
  position: absolute;
  top: 0;
  left: 50%;
  width: 56px;
  transform: translate(-50%, -100%);
  pointer-events: none;
}

/* 今日の情報 */
.today-info {
  margin: 0 auto 1em;
  padding: 0.75em;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.1);
  text-align: center;
  font-size: 1.05em;
  max-width: 320px;
}

.today-info div {
  margin: 0.25em 0;
}

/* ステータスバーとメッセージ */
.status-bar {
  margin: 1em 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
}

.unlock-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5em;
  max-width: 320px;
}

.unlock-card.highlight {
  background: #ffe6f0;
  border: 2px solid #ff66cc;
  border-radius: 12px;
  padding: 0.75em;
}

#growth-message {
  margin-bottom: 0.5em;
  text-align: center;
  font-size: 0.9em;
  line-height: 1.2;
}

#growth-message.can-unlock {
  color: #d1007d;
  font-weight: bold;
}

#growth-message.current-target {
  font-size: 1.1em;
  font-weight: bold;
}

/* 現在挑戦中の和音表示を強調 */
.current-target .chord {
  font-weight: bold;
  padding: 2px 6px;
  border-radius: 6px;
}

/* 和音進捗表示のグリッド */
.chord-status-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 1.5em auto;
  justify-content: center;
  padding: 0 16px;
  box-sizing: border-box;
  max-width: 100%;
}

.chord-status-grid > div {
  margin: 4px;
}

/* line break elements for desktop layout */
.chord-row-break {
  display: none;
}

@media (min-width: 768px) {
  .chord-row-break {
    display: block;
    flex-basis: 100%;
    height: 0;
  }
}
.app-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 56px; /* ← 明示的に固定 */
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: #ffdede;
  /* 左右の余白をやや狭めてアイコンを左寄せ */
  padding-left: 0.5em;
  padding-right: 0.4em;
  font-size: 1rem;
  font-weight: bold;
  color: #333;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
  z-index: 1000;
}

.header-left {
  font-size: 1.2rem;
}


.header-right {
  display: flex;
  align-items: center;
  margin-left: auto;
  gap: 0.1em; /* tighter spacing */
}


/* ▼ 親メニュー全体 */
.parent-menu {
  position: relative;
  display: inline-block;
  margin-left: 0; /* Narrower gap */
}

/* ▼ 親メニューボタン */
#parent-menu-btn {
  position: relative;
  background: transparent;
  border: none;
  font-size: 1.6rem;
  line-height: 1;
  cursor: pointer;
  padding: 0.1em 0.2em;
  transition: background-color 0.2s ease;
  border-radius: 5px;
}

#parent-menu-btn:hover {
  background-color: rgba(0, 0, 0, 0.05);
}

/* ▼ ドロップダウン基本スタイル（非表示が opacity + pointer-events で制御される） */
.parent-dropdown {
  position: absolute;
  right: 0;
  top: 100%;
  background: #fff;
  border: 1px solid #ccc;
  border-radius: 8px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
  padding: 0.5em 0;
  min-width: 220px;
  z-index: 1000;

  opacity: 0;
  transform: translateY(-10px);
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

/* User name display */
.parent-dropdown .user-info {
  padding: 0.5em 1em;
  font-size: 0.9rem;
  border-bottom: 1px solid #eee;
  color: #555;
}

/* ▼ 表示状態 */
.parent-dropdown.show {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

/* ▼ ドロップダウン内のボタン */
.parent-dropdown button {
  width: 100%;
  background: none;
  border: none;
  padding: 0.8em 1em;
  text-align: left;
  font-size: 1rem;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.2s ease;
}

.parent-dropdown button:hover {
  background-color: #f5f5f5;
}

.mode-indicator {
  font-size: 0.8rem;
  margin-right: 0.5em;
}

.preset-save {
  margin-bottom: 0.5em;
}
.preset-save input {
  padding: 0.3em;
  margin-right: 0.5em;
}
.preset-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.3em;
}
.preset-item span {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.preset-item button {
  margin-left: 0.3em;
}
.preset-list {
  max-height: 200px;
  overflow-y: auto;
}

/* Anchor style for static pages */
.parent-dropdown a {
  display: block;
  padding: 0.8em 1em;
  text-decoration: none;
  color: inherit;
  font-size: 1rem;
  transition: background 0.2s ease;
}

.parent-dropdown a:hover {
  background-color: #f5f5f5;
}

/* ▼ インフォメーションメニュー */
.info-menu {
  position: relative;
  display: inline-block;
  margin-left: 0; /* reduced gap */
}

#info-menu-btn {
  background: transparent;
  border: none;
  font-size: 1.6rem;
  line-height: 1;
  cursor: pointer;
  padding: 0.1em 0.2em;
  transition: background-color 0.2s ease;
  border-radius: 5px;
}

#info-menu-btn:hover {
  background-color: rgba(0, 0, 0, 0.05);
}

.info-dropdown {
  position: absolute;
  right: 0;
  top: 100%;
  background: #fff;
  border: none;
  border-radius: 8px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
  padding: 0.5em 0;
  min-width: 220px;
  z-index: 1100;

  opacity: 0;
  transform: translateY(-10px);
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.info-dropdown.show {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.info-dropdown button,
.info-dropdown a {
  display: block;
  width: 100%;
  padding: 0.8em 1em;
  text-decoration: none;
  background: none;
  border: none;
  color: inherit;
  font-size: 1rem;
  text-align: left;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.2s ease;
}

.info-dropdown button:hover,
.info-dropdown a:hover {
  background-color: #f5f5f5;
}

/* ▼ ログアウトボタン（従来のスタイル） */
.logout-btn {
  padding: 0.4em 1em;
  font-size: 0.9rem;
  border: none;
  background-color: #fff;
  border-radius: 6px;
  cursor: pointer;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.1);
}

.logout-btn:hover {
  background-color: #f8f8f8;
}

/* ▼ モバイル対応 */
  @media (max-width: 600px) {
    #parent-menu-btn {
      font-size: 1.4rem;
      line-height: 1;
      padding: 0.1em 0.2em;
    }

  .parent-dropdown {
    min-width: 180px;
    font-size: 0.9rem;
    right: 0.5em;
  }

  .parent-dropdown button {
    padding: 0.6em 1em;
  }

    #info-menu-btn {
      font-size: 1.4rem;
      line-height: 1;
      padding: 0.1em 0.2em;
    }

  .info-dropdown {
    min-width: 180px;
    font-size: 0.9rem;
    right: 0.5em;
  }

  .info-dropdown button,
  .info-dropdown a {
    width: 100%;
    padding: 0.6em 1em;
  }
}
/* ▼ オトロン顔ボタン（左上） */
.home-icon {
  background: none;
  border: none;
  padding: 0;
  margin: 0;
  cursor: pointer;
  display: flex;
  align-items: center;
}
.home-icon img {
  width: 44px;
  height: 44px;
  display: block;
}

/* ▼ 中央の「とれーにんぐ」ボタン風ラベル */
.training-header-button {
  font-size: 1.1rem;
  background: #fff8d5;
  color: #543014;
  border: none;
  padding: 6px 16px;
  border-radius: 10px;
  box-shadow: 0 2px #e0c967;
  cursor: pointer;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}

.training-header-button:hover {
  background-color: #fff3a0;
}

#growth-btn {
  position: relative;
}

.notify-dot {
  position: absolute;
  top: 2px;
  right: 2px;
  width: 10px;
  height: 10px;
  background: #ff3b30;
  border-radius: 50%;
  pointer-events: none;
}

.notify-badge {
  background: #ff3b30;
  color: #fff;
  border-radius: 10px;
  padding: 0.1em 0.4em;
  font-size: 0.7rem;
  margin-left: 0.4em;
}
/* ===== 共通リセット ===== */


/* ===== ホーム画面専用スタイル ===== */
.home-screen {
  position: relative;
  z-index: 0;
  height: calc(100dvh - 56px);
  font-family: inherit;
  margin-top: 0; /* 上部余白は #app.with-header に委任 */
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: center;
  box-sizing: border-box;
  overflow: hidden;
  padding: 2em 0 0;
  background-color: transparent;
  color: #543014;
}

.home-screen::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
  z-index: -1;
}

.home-screen.night::before {
  background: url('/images/night_bg.webp') no-repeat center/cover;
}

.home-screen.night {
  color: var(--color-night-text);
}

.home-screen.morning::before {
  background: url('/images/morning_bg.webp') no-repeat center/cover;
}

.home-screen.noon::before {
  background: url('/images/noon_bg.webp') no-repeat center/cover;
}

.home-screen.evening::before {
  background: url('/images/evening_bg.webp') no-repeat center/cover;
}


.home-screen .logo-container {
  text-align: center;
  margin-top: 5em; /* Move closer to the center */
}

.home-screen .otolon-face {
  width: 270px; /* 1.5x larger */
  max-height: 270px;
  height: auto;
  display: block;
  margin: 0 auto 0.5em auto;
  transform-origin: center;
}

.home-screen .otolon-face.bounce {
  animation: otolon-bounce 0.6s ease;
}

.home-screen .home-title {
  font-size: 2.4rem;
  color: var(--color-accent);
  margin: 0.5em 0 0.2em 0;
  text-align: center;
}

.home-screen .greeting {
  font-size: 1.8rem;
  margin: 0;
  color: #543014;
  text-align: center;
}

.home-screen .sub-title {
  font-size: 1.2rem;
  text-align: center;
  color: #fff;
  margin: 0;
}

.home-screen .main-start-button {
  background-color: var(--color-accent);
  color: #543014;
  font-size: 1.2rem;
  padding: 0.8em 1.5em;
  border: none;
  border-radius: 10px;
  box-shadow: 0 4px #c8a837;
  cursor: pointer;
  display: block;
  margin: 1em auto 0.5em;
  animation: start-button-pulse 1.8s ease-in-out infinite;
  transform-origin: center;
}

.home-screen .main-start-button:hover {
  opacity: 0.9;
}

.home-screen .today-count {
  font-size: 1.1em;
  color: #543014;
  text-align: center;
  margin-top: 0.5em;
}

.home-screen .trial-info {
  font-size: 1em;
  color: #543014;
  text-align: center;
  margin-top: 0.3em;
  min-height: 1.2em; /* keep layout even when text is hidden */
}

.home-screen .trial-info.warning {
  color: #ff6600;
}

@keyframes start-button-pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.1);
  }
}

@keyframes otolon-bounce {
  0%, 100% {
    transform: translateY(0) scale(1);
  }
  30% {
    transform: translateY(-15px) scale(1.1);
  }
  60% {
    transform: translateY(5px) scale(0.95);
  }
}

/* --- PC layout tweaks --- */
@media (min-width: 768px) {
  .home-screen {
    padding-top: 4em;
  }

  .home-screen .logo-container {
    margin-top: 4em;
  }

  .home-screen .main-start-button {
    font-size: 1.4rem;
    padding: 1em 2em;
    margin: 1em auto 0.5em;
  }
}
.info-page {
  max-width: 800px;
  margin: 1em auto;
  padding: 0 1em 2em;
  box-sizing: border-box;
  background: #fff;
  color: #543014 !important;
  line-height: 1.7;
  border-radius: 8px;
}

/* Pages that should stay centered even on large screens */
.info-page.center-page {
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  border-radius: 8px;
}

/* Full width pages with centered text */
.info-page.full-page {
  max-width: none;
  margin: 0;
  padding-left: 0;
  padding-right: 0;
  border-radius: 0;
  text-align: center;
}

/* Center lists while keeping bullet indentation */
.info-page ul {
  display: inline-block;
  text-align: left;
  margin: 0 auto 1em;
  padding-left: 1.6em;
}

/* Ensure bullet lists aren't flush against the edge on wide screens */
.info-page.full-page ul {
  display: inline-block;
  text-align: left;
  max-width: 800px;
  margin: 0 auto 1em;
  padding-left: 1.6em;
  font-size: 1rem;
}

@media (min-width: 768px) {
  .info-page {
    max-width: none;
    margin-left: 0;
    margin-right: 0;
    border-radius: 0;
  }
  .info-page.center-page {
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    border-radius: 8px;
  }
}

/* Ensure readability even when the body has a dark background */
.app-root.night .info-page {
  background: #fff;
  color: #543014 !important;
}

/* Ensure modal text stays readable on the night theme */
.app-root.night .modal,
.app-root.night .modal-box,
.app-root.night #help-modal .modal-content {
  color: #543014;
}

.info-page h1 {
  font-family: var(--font-heading);
  text-align: center;
  font-size: 1.6rem;
  margin-bottom: 0.8em;
}

.info-page h2 {
  font-family: var(--font-heading);
  margin-top: 1.4em;
  font-size: 1.3rem;
}

.info-page a {
  color: #0645ad;
}


.info-page details {
  margin: 1em 0;
}

/* collapsible help section */
.info-page details.collapsible {
  overflow: hidden;
}

.info-page details.collapsible .detail-content {
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transform: translateY(-8px);
  transition: max-height 0.4s cubic-bezier(0.25, 1, 0.5, 1),
    opacity 0.4s ease, transform 0.4s cubic-bezier(0.25, 1, 0.5, 1);
}

.info-page details.collapsible[open] .detail-content {
  max-height: 600px;
  opacity: 1;
  transform: translateY(0);
}

.info-page details.collapsible.closing .detail-content {
  max-height: 0;
  opacity: 0;
  transform: translateY(-8px);
}


.info-page summary {
  cursor: pointer;
  font-weight: bold;
  padding: 0.4em 0.6em 0.4em 1.8em;
  background: #f3f3f3;
  border-radius: 4px;
  list-style: none;
  position: relative;
  text-align: left; /* 左寄せ */
}

.info-page summary::-webkit-details-marker {
  display: none;
}

/* plus/minus icon */
.info-page summary::before,
.info-page summary::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 0.8em;
  width: 10px;
  height: 2px;
  margin-top: -1px;
  background: currentColor;
  transition: transform 0.25s ease;
}

.info-page summary::after {
  transform: rotate(90deg);
}

.info-page details[open] summary {
  background: #e0e0e0;
}

.info-page details[open] summary::after {
  transform: rotate(90deg) scaleX(0);
}

.info-page .detail-content p,
.info-page .detail-content ul {
  margin: 0.5em 1.2em;
}

.contact-form {
  max-width: 360px;
  margin: 1em auto;
  display: flex;
  flex-direction: column;
  gap: 1em;
}

.contact-form input,
.contact-form textarea {
  padding: 0.6em;
  border: 1px solid #ccc;
  border-radius: 6px;
  font-size: 1rem;
  box-sizing: border-box;
}

.contact-form textarea {
  min-height: 6em;
}

.contact-form button {
  padding: 0.8em;
  background: #ffa500;
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: 1rem;
  cursor: pointer;
}

.contact-form button:disabled {
  opacity: 0.7;
}

.form-status {
  margin-top: 0.5em;
  text-align: center;
  font-size: 0.9rem;
}

.form-error {
  color: red;
}

.form-success {
  color: green;
}

@media (min-width: 768px) {
  /* PCではbody全体でスクロールするため高さ指定を外す */
  .info-page:not(.contact-page) {
    height: auto;
    overflow-y: visible;
  }
}
/* Landing page styles */

.intro-header .header-right {
  display: flex;
  gap: 0.6em;
  margin-left: auto;
}

.intro-header .header-right > button {
  border: none;
  border-radius: 6px;
  padding: 0.4em 1em;
  font-size: 0.9rem;
  color: #fff;
  cursor: pointer;
}

.intro-header #login-btn {
  background-color: #66bbff;
}

.intro-header #login-btn:hover {
  background-color: #42a5f5;
}

.intro-header #signup-btn {
  background-color: var(--color-primary);
}

.intro-header #signup-btn:hover {
  background-color: #e57c00;
}

/* Landing hero header */
.hero-header {
  position: relative;
  padding-top: 56px; /* match fixed header height */
}

.hero-container {
  position: relative;
  display: flex;
  height: 100vh;
  min-height: 600px;
  overflow: hidden;
}

.hero {
  width: 50%;
  padding: 5vw;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  position: relative;
  z-index: 2;
}

.hero-image {
  position: absolute;
  inset: 0;
  background-image: url('images/otoron_landing_hero.webp');
  background-size: contain;
  background-repeat: no-repeat;
  background-position: right center;
}

@media (max-width: 767px) {
  .hero-container {
    flex-direction: column;
    position: relative;
  }
  .hero {
    width: 100%;
    position: relative;
    height: auto;
    padding: 4rem 1em;
    box-sizing: border-box;
    text-align: center;
    align-items: center;
    z-index: 2;
  }
  .hero-title,
  .hero-sub,
  .note,
  .hero-highlight {
    color: inherit;
  }
  .hero-image {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100vh;
    background-image: url('images/otoron_landing_hero_sp.webp');
    background-size: cover;
    background-position: center top;
  }
}

.mato-image {
  width: 200px;
  max-width: 60%;
  height: auto;
  margin: 1em auto 0;
}

@media (max-width: 767px) {
  .mato-image {
    display: none;
  }
}
/* Landing hero header END */
.hero-title {
  font-size: 1.6em;
  font-weight: bold;
  text-align: center;
  line-height: 1.65;
  max-width: 90%;
  margin: 0 auto 0.8em;
  word-break: keep-all;
  white-space: normal;
}

.hero-sub {
  font-size: 1.1rem;
  text-align: center;
  line-height: 1.6;
  max-width: 90%;
  margin: 0 auto 1.2em;
  color: #333;
}

.note {
  font-size: 0.9em;
  text-align: center;
  color: #666;
  margin-top: -0.5em;
  margin-bottom: 1.2em;
}

.hero-highlight {
  font-size: 1.1em;
  color: #333;
  font-weight: bold;
  margin: 1.5em auto;
  text-align: center;
  display: block;
  white-space: nowrap;
  width: fit-content;
}

.hero-highlight .accent {
  color: var(--color-primary);
}

@media (min-width: 768px) {
  .hero-title {
    font-size: 2.4em;
    max-width: 840px;
    line-height: 1.4;
    text-align: center;
  }

  .hero-sub {
    font-size: 1.2rem;
  }

  .hero-highlight {
    font-size: 1.2em;
  }
}
.cta-button {
  margin-top: 1.5em;
  background-color: var(--color-primary);
  color: #fff;
  border: 2px solid var(--color-primary-dark);
  border-radius: 8px;
  padding: 0.7em 1.6em;
  font-size: 1.1em;
  font-weight: bold;
  box-shadow: 0 3px 6px rgba(0, 0, 0, 0.2);
  cursor: pointer;
  transition: transform 0.1s ease, background-color 0.3s ease;
}

.hero .cta-button {
  display: block;
  margin-left: auto;
  margin-right: auto;
  white-space: nowrap; /* prevent unwanted wrapping on small screens */
  word-break: keep-all; /* respect explicit <br> only */
}

@media (max-width: 767px) {
  .hero .cta-button {
    position: absolute;
    bottom: 1.5rem;
    left: 50%;
    transform: translateX(-50%);
  }
}

.cta-button:hover {
  background-color: var(--color-primary-dark);
}

.cta-button:active {
  transform: scale(0.97);
}

.problems,
.result-example,
.faq {
  padding: 3em 1em;
}

.age-info {
  padding: 2em 1em;
  background: #fff4e5;
  border: 1px solid #ffd5aa;
  border-radius: 8px;
  max-width: 600px;
  margin: 0 auto 2em;
  line-height: 1.6;
}

.age-info ul {
  list-style: none;
  padding: 0;
  margin: 0 0 1em 0;
}

.age-info li {
  margin-bottom: 1em;
}

.age-note {
  margin-top: 1em;
}

.age-info h2 {
  font-size: 1.4em;
  margin-bottom: 0.8em;
  text-align: center;
}

.intro-pricing {
  padding: 3em 1em;
}

.intro-pricing h2 {
  text-align: center;
  margin-bottom: 1em;
  font-size: 1.4em;
}

.intro-pricing .intro-plans {
  display: flex;
  flex-direction: column;
  gap: 1em;
  max-width: 1000px;
  margin: 0 auto;
}

@media (min-width: 768px) {
  .intro-pricing .intro-plans {
    flex-direction: row;
    justify-content: center;
    flex-wrap: wrap;
    gap: 24px;
  }
  .intro-pricing .plan-card {
    flex: 1 1 280px;
    max-width: 320px;
    box-sizing: border-box;
  }
}

.features-heading {
  font-size: 2rem;
  text-align: center;
  margin-bottom: 1.5em;
}

/* 4ステップの横並びスタイル修正 */
.intro-steps-container {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5em;
  max-width: 600px;
  margin: 0 auto;
  margin-top: 2em;
  padding-top: 1.5em;
  border-top: 2px solid #ffe0b3;
}

@media (min-width: 768px) {
  .intro-steps-container {
    grid-template-columns: repeat(2, 1fr);
    max-width: 800px;
  }
}

@media (min-width: 1024px) {
  .intro-steps-container {
    grid-template-columns: repeat(4, 1fr);
    max-width: none;
  }
}

/* 各ステップ */
.intro-step {
  position: relative;
  background: #fff;
  padding: 2.4em 1.2em 1.2em 1.2em;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
  border: 3px solid #ddd;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1em;
  text-align: center;
  writing-mode: horizontal-tb;
  text-orientation: mixed;
}

.step-badge {
  position: absolute;
  top: -1.2em;
  left: 50%;
  transform: translateX(-50%);
  background: #fff;
  border: 2px solid var(--color-primary);
  border-radius: 999px;
  padding: 0.2em 0.8em;
  font-size: 0.9rem;
  font-weight: bold;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

.intro-step-video-wrapper {
  width: 100%;
  max-width: 260px;
  aspect-ratio: 412 / 915;
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 1em;
  background: #000;
  flex-shrink: 0;
}

.intro-step-video-wrapper .intro-step-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.intro-step-text {
  flex: 1;
  text-align: center;
}

@media (min-width: 768px) {
  .intro-step {
    align-items: flex-start;
    text-align: left;
  }

  .intro-step-text {
    text-align: left;
  }

  .intro-step-header {
    margin-bottom: 0.5em;
  }
}

/* ステップ番号とタイトルの行 */
.intro-step-header {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.6em;
  margin: 1em auto 0.2em auto;
  max-width: 600px;
}


/* ステップ番号 */
.intro-step-number {
  background-color: var(--color-primary);
  color: white;
  font-weight: bold;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2em;
  height: 2em;
  font-size: 1rem;
  flex-shrink: 0;
  margin-right: 0.4em;
}

/* ステップタイトル */
.intro-step-title {
  font-size: 1.1rem;
  font-weight: bold;
  color: #222;
  margin: 0;
  line-height: 1.4;
}

/* 説明文（step-description） */
.intro-step-description {
  max-width: 600px;
  margin: 0.2em auto 1em auto;
  font-size: 0.95rem;
  color: #555;
  line-height: 1.6;
  text-align: center;
}

/* CTAボタン */
.intro-step-cta {
  text-align: center;
  margin-top: 2em;
  padding-bottom: 2em;
  border-bottom: 2px solid #ffe0b3;
  margin-bottom: 2em;
}

.intro-step-cta .cta-button {
  /* reuse base cta-button style for consistency */
}

.features .intro-step {
  display: flex;
  flex-direction: column;
  gap: 1.2em;
  padding: 1.5em 0;
  align-items: center;
  text-align: center;
  writing-mode: horizontal-tb;
  text-orientation: mixed;
}

@media (min-width: 768px) {
  .features .intro-step {
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
  }

  .features .intro-step-text,
  .features .intro-step-description {
    text-align: left;
  }
}

.features .intro-step-video-wrapper {
  width: 100%;
  max-width: 260px;
  aspect-ratio: 412 / 915;
  overflow: hidden;
  border-radius: 8px;
  background: #000;
  align-self: center;
}

.features .intro-step-video-wrapper .intro-step-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.features .intro-step-number {
  font-size: 2.2em;
}

.features .intro-step-title {
  font-size: 1.2rem;
  font-weight: bold;
}

.features .intro-step-description {
  margin-top: 0.5em;
  line-height: 1.5;
}

.intro-step,
.intro-step-text,
.intro-step-title,
.intro-step-description {
  writing-mode: horizontal-tb !important;
  text-orientation: mixed;
}

/* お悩み吹き出し */
.trouble-lead {
  text-align: center;
  margin-bottom: 0.6em;
  font-size: 1em;
}

.trouble-title {
  text-align: center;
  font-size: 1.4em;
  margin-bottom: 1.2em;
}

/* お悩み吹き出しエリア - 修正版 */
.trouble-bubbles {
  max-width: 1000px;
  margin: 0 auto;
  text-align: center;
}

.speech-bubble {
  position: relative;
  background: #e6e6e6;
  border-radius: 1.5em;
  padding: 1em 1.5em;
  font-size: 16px;
  line-height: 1.6;
  color: #333;
  max-width: 320px;
  margin: 0 auto 1.5em;
  text-align: left;
  display: inline-block;
  vertical-align: top;
  width: calc(50% - 0.5em);
  box-sizing: border-box;
}

.speech-bubble::after {
  content: "";
  position: absolute;
  bottom: -12px;
  left: 2em;
  border-width: 12px 12px 0 12px;
  border-style: solid;
  border-color: #e6e6e6 transparent transparent transparent;
}

@media (max-width: 600px) {
  .speech-bubble {
    width: 100%;
    max-width: 100%;
    display: block;
    margin: 0 0 1.5em 0;
  }
}

/* 結果表示セクション - 修正版 */
.result-block {
  background: #fff;
  border-radius: 8px;
  padding: 1em;
  text-align: left;
  max-width: 600px;
  margin: 0 auto;
}

.result-card {
  margin-bottom: 0.8em;
  padding: 0.5em 0;
  border-bottom: 1px solid #f0f0f0;
}

.result-card:last-child {
  border-bottom: none;
}

.result-icon {
  font-size: 1.2em;
  margin-right: 0.5em;
}

.result-card h4 {
  margin: 0 0 0.3em 0;
  font-size: 1em;
  font-weight: bold;
  display: inline;
}

.result-card p {
  margin: 0;
  font-size: 0.95em;
  line-height: 1.6;
  word-break: break-word;
}

.lp-footer {
  padding: 2em 0;
  text-align: center;
}

.lp-footer .cta-button {
  margin-bottom: 1em;
}

.social-links {
  display: flex;
  justify-content: center;
  gap: 1em;
  margin-bottom: 1em;
}

.social-links a {
  color: #333;
  text-decoration: none;
  font-size: 0.9em;
}

.social-links img {
  width: 24px;
  height: auto;
}

/* FAQ accordion */
.faq-item {
  max-width: 600px;
  margin: 0 auto 1em auto;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 1px 4px rgba(0,0,0,0.1);
  background: #fff;
}

.faq-question {
  display: block;
  width: 100%;
  padding: 1em 2.5em 1em 1em; /* ensure space for the toggle icon */
  border: none;
  background: #f6f6f6;
  cursor: pointer;
  font-size: 1em;
  text-align: left;
  position: relative;
}

.faq-question .q-icon {
  display: inline-block;
  width: 1.4em;
  height: 1.4em;
  margin-right: 0.6em;
  background: var(--color-primary);
  color: #fff;
  border-radius: 50%;
  font-weight: bold;
  text-align: center;
  line-height: 1.4em;
  vertical-align: top;
}

.faq-question .toggle-icon {
  position: absolute;
  right: 1em;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.2em;
  font-weight: bold;
}

.faq-question[aria-expanded="true"] .toggle-icon::before {
  content: "-";
}

.faq-question[aria-expanded="false"] .toggle-icon::before {
  content: "+";
}

.faq-answer {
  background: #fff;
  padding: 1em;
  border-top: 1px solid #eee;
  font-size: 0.95em;
  color: #333;
  line-height: 1.6;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transform: translateY(-8px);
  transition: max-height 0.4s cubic-bezier(0.25, 1, 0.5, 1), opacity 0.4s ease,
    transform 0.4s cubic-bezier(0.25, 1, 0.5, 1);
}

.faq-answer.show {
  max-height: 400px;
  opacity: 1;
  transform: translateY(0);
}

.faq-answer .a-label {
  background: #66bbff;
  color: #fff;
  width: 1.4em;
  height: 1.4em;
  line-height: 1.4em;
  text-align: center;
  border-radius: 50%;
  font-weight: bold;
  display: inline-block;
  margin-right: 0.6em;
  vertical-align: top;
}

.faq-answer p {
  margin: 0;
  display: inline;
}

.faq-answer[hidden] {
  display: none;
}
.lock-screen {
  max-width: 420px;
  margin: 0 auto;
  padding: 1em;
  text-align: center;
}

.lock-screen button {
  margin-top: 1em;
  padding: 0.8em;
}
.login-wrapper {
  max-width: 400px;
  margin: 100px auto;
  padding: 2rem;
  border: 1px solid #ccc;
  border-radius: 12px;
  background: #fff;
  box-shadow: 0 4px 16px rgba(0,0,0,0.1);
  font-family: inherit;
}

.login-title {
  text-align: center;
  font-size: 1.8rem;
  margin-bottom: 1.5rem;
  color: #333;
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

/* Make submit button align with inputs */
.login-form button {
  width: 100%;
}

.login-form label {
  font-size: 0.9rem;
  color: #444;
}

.login-form input {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid #bbb;
  border-radius: 6px;
  font-size: 1rem;
  box-sizing: border-box;
}

/* Ensure space for the visibility toggle inside password fields */
.login-form .password-wrapper input {
  padding-right: 2.5rem;
}

.login-button {
  padding: 0.75rem;
  background: #0077cc;
  color: white;
  border: none;
  border-radius: 6px;
  font-size: 1rem;
  cursor: pointer;
  margin-top: 0.5rem;
}

.login-button:hover {
  background: #005fa3;
}

.login-actions {
  margin-top: 1.5em;
  display: flex;
  flex-direction: column;
  gap: 0.8em;
  align-items: center;
}

.login-secondary {
  background: none;
  border: none;
  color: #007bff;
  font-size: 0.95em;
  cursor: pointer;
  text-decoration: underline;
}

.login-secondary:hover {
  color: #0056b3;
}

.login-signup {
  background: #ffa500;
  border: none;
  padding: 0.5em 1.5em;
  font-size: 0.95em;
  border-radius: 6px;
  color: white;
  cursor: pointer;
}

.login-signup:hover {
  background: #e38c00;
}
.google-button {
  margin-top: 1rem;
  padding: 0.75rem;
  width: 100%;
  background-color: #4285f4;
  color: white;
  border: none;
  border-radius: 6px;
  font-size: 1rem;
  cursor: pointer;
}

.google-button:hover {
  background-color: #3367d6;
}

.login-divider {
  margin: 1rem 0;
  text-align: center;
  color: #999;
  font-size: 0.9rem;
}

.login-success {
  text-align: center;
  color: #28a745;
  margin-bottom: 1rem;
}

.login-error {
  margin-top: 0.5rem;
  color: #d93025;
  font-size: 0.9rem;
  line-height: 1.4;
  text-align: center;
}


.mypage-screen {
  max-width: 480px;
  margin: 0 auto; /* 上部余白は #app.with-header に委任 */
  background: linear-gradient(135deg, #fff1e6, #ffe6f2);
  min-height: 100vh;
}

.mypage-tabs {
  display: flex;
  border-bottom: 1px solid #ccc;
}

.mypage-tab-button {
  flex: 1;
  background: #f5f5f5;
  border: none;
  padding: 0.6em;
  font-size: 0.9rem;
}

.mypage-tab-button.active {
  background: #fff;
  border-bottom: 2px solid var(--color-primary);
  font-weight: bold;
}

.tab-section {
  padding: 1em 0;
}


.form-field {
  display: flex;
  flex-direction: column;
  margin-bottom: 1em;
}

.form-field label {
  font-size: 0.9rem;
  margin-bottom: 0.2em;
}

.required {
  color: red;
  margin-left: 0.5em;
  font-size: 0.8em;
}

.optional {
  color: gray;
  margin-left: 0.5em;
  font-size: 0.8em;
}

.plan-buttons {
  display: flex;
  flex-direction: column;
  gap: 0.6em;
  margin-top: 1em;
}

.plan-buttons button {
  padding: 0.8em;
}

@media (min-width: 768px) {
  .plan-buttons {
    flex-direction: row;
  }
  .plan-buttons button {
    flex: 1;
  }
}
.profile-form,
.password-form {
  max-width: 360px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1em;
}

.profile-form input,
.profile-form select,
.password-form input {
  padding: 0.6em;
  border: 1px solid #ccc;
  border-radius: 6px;
  font-size: 1rem;
  box-sizing: border-box;
}

/* Reserve space for the visibility toggle */
.password-form .password-wrapper input {
  padding-right: 2.5rem;
}

.profile-form button,
.password-form button {
  padding: 0.8em;
  background: #ffa500;
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: 1rem;
  width: 100%;
}

.password-form button:disabled {
  background: #ccc;
  color: #fff;
  cursor: not-allowed;
}

.password-guide {
  padding: 1em;
  margin: 1em;
  background: #fff4e0;
  border: 1px solid #ffd599;
  border-radius: 6px;
  font-size: 0.9rem;
}
.password-guide button {
  margin-left: 0.5em;
  padding: 0.4em 0.8em;
}



.password-error {
  color: red;
  font-size: 0.8rem;
  margin-bottom: 0.2em;
}

.email-readonly {
  padding: 0.6em 0;
  font-size: 1rem;
}
.pricing-page {
  max-width: 420px;
  margin: 0 auto;
  padding: 1em;
  display: flex;
  flex-direction: column;
  gap: 1em;
  background: linear-gradient(135deg, #fff1e6, #ffe6f2);
  min-height: 100vh;
}

@media (min-width: 768px) {
  .pricing-page {
    flex-direction: row;
    justify-content: center;
    flex-wrap: wrap;
    gap: 24px;
    max-width: none;
    align-items: flex-start;
  }
  .pricing-page .plan-card {
    flex: 1 1 280px;
    max-width: 320px;
    box-sizing: border-box;
    align-self: flex-start;
  }
}

.plan-card {
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  padding: 1.2em;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 0.6em;
  /* Keep all plan cards the same height */
  min-height: 224px;
}

.plan-card.recommended {
  border: 2px solid var(--color-primary);
}

.plan-title {
  font-size: 1.1rem;
  font-weight: bold;
}

.monthly-price {
  font-size: 1.6rem;
  font-weight: bold;
  color: #c15e00;
}

.total-price {
  font-size: 0.9rem;
  color: #555;
}

.plan-badge {
  align-self: center;
  background: #ffe6a5;
  color: #c15e00;
  border-radius: 999px;
  padding: 0.2em 0.8em;
  font-size: 0.8rem;
}

.recommend-badge {
  align-self: center;
  background: var(--color-primary);
  color: #fff;
  border-radius: 999px;
  padding: 0.2em 0.8em;
  font-size: 0.8rem;
}

.plan-card button {
  margin-top: auto;
  padding: 0.8em;
  font-size: 1rem;
  background: #ffa500;
  color: #fff;
  border: none;
  border-radius: 6px;
  cursor: pointer;
}

.plan-card button:hover {
  background: #e38c00;
}

.plan-card:not(.recommended) button {
  background: #ccc;
  color: #666;
}

.plan-card:not(.recommended) button:hover {
  background: #bbb;
}

.plan-note {
  font-size: 0.8rem;
  text-align: center;
  color: #666;
  margin-top: 0.5em;
  width: 100%;
}

.plan-info-screen {
  max-width: 420px;
  margin: 0 auto;
  padding: 1em;
  display: flex;
  flex-direction: column;
  gap: 1em;
}

.current-plan {
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  padding: 1.2em;
  display: flex;
  flex-direction: column;
  gap: 0.6em;
}

.plan-info-buttons {
  display: flex;
  gap: 0.6em;
  margin-top: 1em;
}

.plan-info-buttons button {
  flex: 1;
  padding: 0.8em;
}

.plan-info-msg {
  margin-top: 1em;
}
/* 結果画面全体のレイアウト */
.result-container {
  text-align: center;
  padding: 1em 0;
  background-color: transparent;
  box-sizing: border-box;
}

/* テーブル横スクロール用ラッパー */
.result-scroll-wrap {
  overflow-x: auto;
  width: 100%;
}

/* メッセージ強調 */
.praise {
  font-size: 1.8em;
  color: #ff69b4;
  margin-top: 0.5em;
}

/* フッター・ボタン周辺 */
.result-footer {
  margin-top: 2em;
}

.small-btn {
  font-size: 1rem;
  padding: 0.5em 1.2em;
  border: 1px solid #ccc;
  background-color: white;
  border-radius: 6px;
  cursor: pointer;
}

.small-btn:hover {
  background-color: #f8f8f8;
}

/* 正誤表（テーブル） */
.result-table {
  margin: 2em auto;
  border-collapse: collapse;
  width: 100%;
  min-width: 600px;
  font-size: 0.85em;
  table-layout: fixed;
}

/* 列幅調整：1列目だけ小さく */
.result-table th:nth-child(1),
.result-table td:nth-child(1) {
  width: 70px;
}

.result-table th:nth-child(2),
.result-table td:nth-child(2),
.result-table th:nth-child(3),
.result-table td:nth-child(3),
.result-table th:nth-child(4),
.result-table td:nth-child(4),
.result-table th:nth-child(5),
.result-table td:nth-child(5) {
  width: 80px;
}

/* セルの余白を最小限に */
.result-table th,
.result-table td {
  padding: 0.2em;
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.correct-row,
.wrong-row {
  background-color: transparent; /* 正誤背景色はなし */
}

.ans-mark {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-weight: 900;
  font-size: 2.6rem; /* 30% larger */
  color: #ff6666; /* lighter red */
  -webkit-text-stroke: 1px #ff6666; /* slightly thicker */
}
.ans-mark.correct { color: #ff6666; }
.ans-mark.wrong { color: #ff6666; }

/* 単音回答ラッパー */
.note-answer {
  position: relative;
  display: inline-block;
}

/* 和音色ボックス（文字折り返し無し＋小サイズ） */
.chord-box {
  position: relative;
  width: 50px;
  height: 50px;
  line-height: 50px;
  margin: 0 auto;
  color: white;
  font-weight: bold;
  font-size: 8px;        /* ← これで確実に小さくなる！ */
  border-radius: 6px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: clip;
  letter-spacing: -0.05em;
}

/* 色クラス：Chord Color Mapping */
.aka        { background-color: red; }
.kiiro      { background-color: gold; }
.ao         { background-color: blue; }
.kuro       { background-color: black; }
.midori     { background-color: green; }
.orange     { background-color: orange; }
.murasaki   { background-color: purple; }
.pinku      { background-color: pink; color: black; }
.chairo     { background-color: sienna; }
.kigreen    { background-color: yellowgreen; }
.usudaidai  { background-color: peachpuff; color: black; }
.fuji       { background-color: plum; }
.hai        { background-color: gray; }
.mizuiro    { background-color: skyblue; }
.white      { background-color: white; color: black; border: 1px solid #aaa; }

/* === 五線譜表示用 === */
.score-wrapper {
  text-align: center;
  margin: 1em 0;
  background-color: #ffffff;
}

.score-image {
  max-width: 100%;
  height: auto;
  border: 1px solid #ccc;
  background-color: #ffffff;
  cursor: pointer;
}

.modal {
  position: fixed;
  top: 0;
  left: 0;
  /* Avoid horizontal scrollbars caused by viewport units */
  width: 100%;
  height: 100%;
  overflow-y: auto;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
}

.modal.hidden {
  display: none;
}

.modal img {
  max-width: 90%;
  max-height: 90%;
}

/* ===== Tab layout for result/summary ===== */
.tab-menu {
  display: flex;
  width: 100%;
  margin: 0 0 1em;
  border-bottom: 1px solid #ccc;
}

.tab-menu .tab {
  flex: 1;
  font-size: 1rem;
  padding: 0.6em 0.4em;
  background-color: #f5f5f5;
  border: none;
  border-top: 3px solid transparent;
  border-radius: 6px 6px 0 0;
  cursor: pointer;
  transition: background-color 0.2s;
}

.tab-menu .tab:hover {
  background-color: #e9e9e9;
}

.tab-menu .tab.active {
  background-color: #fff;
  border-top-color: var(--color-primary);
  font-weight: bold;
}

.tab-contents {
  margin-top: 1em;
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

.summary-note {
  text-align: center;
  margin: 0.5em 0;
  font-size: 0.9em;
}

.summary-total {
  text-align: center;
  font-weight: bold;
  margin: 0.5em 0 1em;
}

.summary-table {
  margin: 0 auto 1.5em;
  border-collapse: collapse;
  font-size: 0.9em;
}

.summary-table th,
.summary-table td {
  border: 1px solid #ccc;
  padding: 0.3em 0.6em;
  text-align: center;
}

.summary-table th {
  background-color: #f4f4f4;
}

@media (max-width: 600px) {
  .result-container {
    padding: 0.5em 0;
  }
  .result-table {
    font-size: 0.7em;
    min-width: 100%;
  }
  .result-table th:nth-child(1),
  .result-table td:nth-child(1) {
    width: 50px;
  }
  .result-table th:nth-child(2),
  .result-table td:nth-child(2),
  .result-table th:nth-child(3),
  .result-table td:nth-child(3),
  .result-table th:nth-child(4),
  .result-table td:nth-child(4),
  .result-table th:nth-child(5),
  .result-table td:nth-child(5) {
    width: 60px;
  }
  /* shrink answer tables on small screens */
  .summary-screen .result-table {
    transform: scale(0.8);
    transform-origin: left top;
    width: 125%;
  }
}
/* ===== settings.css ===== */

/* 出題設定ボード全体 */
.board {
  margin: 1em auto;
  padding: 1em;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.6);
  max-width: 960px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.board h2 {
  text-align: center;
  margin-bottom: 1em;
  font-size: 1.4em;
}

/* PCで横並びにするメインセクション */
.main-section {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 24px;
}

@media (min-width: 768px) {
  .main-section {
    flex-wrap: nowrap;
  }
}

.chord-group {
  margin-bottom: 1.5em;
  flex: 1 1 200px;
  border-radius: 12px;
  background: #fff;
  padding: 0.5em;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

.chord-group h2 {
  display: flex;
  align-items: center;
  font-size: 1.1em;
  margin: 0.5em 0;
  justify-content: flex-start; /* 左寄せに変更 */
}

.group-toggle-btn {
  margin-right: 0.5em;
  padding: 2px 6px; /* 小さめのボタン */
  font-size: 0.9em;
}

.chord-group .chord-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
  max-height: 1000px;
  overflow: hidden;
  opacity: 1;
  transition: max-height 0.3s ease, opacity 0.3s ease;
}

.chord-group.collapsed .chord-grid {
  max-height: 0;
  opacity: 0;
}

.chord-block {
  border: 1px solid #ccc;
  border-radius: 12px;
  background: #fff;
  padding: 8px;
  text-align: center;
  font-size: 0.9em;
  position: relative;
  transition: filter 0.2s, opacity 0.2s;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.chord-block:not(.selected) {
  filter: grayscale(1);
  opacity: 0.6;
}

.chord-toggle {
  appearance: none;
  position: relative;
  margin: 0 auto;
  width: 36px;
  height: 18px;
  background-color: #ccc;
  border-radius: 18px;
  cursor: pointer;
  transition: background-color 0.3s;
}

.chord-toggle::before {
  content: '';
  position: absolute;
  left: 2px;
  top: 2px;
  width: 14px;
  height: 14px;
  background-color: #fff;
  border-radius: 50%;
  transition: transform 0.3s;
}

.chord-toggle:checked {
  background-color: #4caf50;
}

.chord-toggle:checked::before {
  transform: translateX(18px);
}

.chord-toggle:disabled {
  background-color: #eee;
  cursor: not-allowed;
}

.chord-toggle:disabled::before {
  background-color: #ccc;
}

.checkbox-row {
  text-align: center;
  margin-bottom: 6px;
}

/* 以前は選択中のブロックに擬似要素でチェックマークを表示していたが、
   実際のチェックボックスを表示するため不要となった */
.chord-block.selected::after {
  display: none;
}

.chord-block.locked {
  opacity: 0.5;
}

.chord-name {
  font-weight: bold;
  margin-bottom: 4px;
  border-radius: 4px;
  white-space: nowrap; /* Prevent chord names from wrapping */
}

.count-control {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 6px;
}

.count-control button {
  padding: 2px 6px;
}

.count-number {
  min-width: 1.2em;
  text-align: center;
}

/* ヘッダー行 */
.header-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.75em;
  padding: 0.5em 1em;
  max-width: 860px; /* ← 少し狭くて美しい */
  margin: 0 auto;
  box-sizing: border-box;
  text-align: center;
}

.header-title-line {
  display: flex;
  align-items: center;
  gap: 1em;
  font-size: 1.3em;
  font-weight: bold;
  white-space: nowrap;
}

.header-button-group {
  display: flex;
  align-items: center;
  gap: 0.5em;
}
.header-button-group button,
.header-button-group select {
  padding: 6px 12px;
  font-size: 1em;
  height: 2.2em; /* 高さを揃える */
}

.settings-controls {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75em;
}
.settings-controls button:not(.help-button),
.settings-controls select {
  padding: 6px 12px;
  font-size: 1em;
  min-height: 2.2em;
}
.settings-controls .toggle-wrap {
  height: 2.2em;
  margin: 0;
  display: flex;
  align-items: center;
}

.header-title-line #total-count {
  font-size: 1rem;
  font-weight: normal;
  color: #333;
}

/* ボタン行 */
.center-button-box {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1em;
  margin-bottom: 1em;
  flex-wrap: wrap;
}

.center-button-box button,
.center-button-box select {
  font-size: 1em;
  padding: 6px 12px;
  border-radius: 6px;
  border: 1px solid #ccc;
  background-color: #fff;
  cursor: pointer;
  transition: background-color 0.2s ease;
}

.center-button-box button:hover,
.center-button-box select:hover {
  background-color: #f8f8f8;
}

/* 単音分化モードトグル */
.toggle-wrap {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 0.5em 1em;
  position: relative;
}

.toggle-input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: relative;
  width: 40px;
  height: 20px;
  background-color: #ccc;
  border-radius: 20px;
  cursor: pointer;
  transition: background-color 0.3s;
}

.toggle-slider::before {
  content: '';
  position: absolute;
  left: 2px;
  top: 2px;
  width: 16px;
  height: 16px;
  background-color: #fff;
  border-radius: 50%;
  transition: transform 0.3s;
}

.toggle-input:checked + .toggle-slider {
  background-color: #4caf50;
}

.toggle-input:checked + .toggle-slider::before {
  transform: translateX(20px);
}
.toggle-label {
  white-space: nowrap;
  font-weight: normal;
  font-size: 0.9em;
}

.single-note-select-wrap {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 0.5em 0;
}
.single-note-select-wrap span {
  white-space: nowrap;
}
.single-note-select-wrap select {
  padding: 6px 4px;
}

/* 縦型の設定カード */
.settings-card-row {
  display: flex;
  justify-content: center;
  gap: 0.75em;
  width: 100%;
}

.settings-card {
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
  padding: 8px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5em;
  flex: 0 1 200px;
  max-width: 200px;
  min-height: 100px;
  font-size: 0.9em;
  box-sizing: border-box;
}
.settings-card > * {
  width: 100%;
}
.settings-card button,
.settings-card select {
  font-size: 0.9em;
  font-weight: normal;
}

/* Adjust preset button size */
.settings-card.preset-card {
  min-height: 120px;
}
.settings-card.preset-card .preset-wrap {
  display: flex;
  align-items: center;
  gap: 0.5em;
  width: 100%;
}
.settings-card.preset-card button {
  display: block;
  flex: 1;
  white-space: normal;
  word-break: keep-all;
  text-align: center;
  line-height: 1.4;
  padding: 0.6em;
  font-size: 0.9em;
}
.settings-card.preset-card .help-button {
  margin-left: 0.5em;
  flex-shrink: 0;
}

.manual-label {
  /* display: flex; */
  align-items: center;
  gap: 0.2em;
  position: relative;
}

.mode-label {
  /* display: flex; */
  align-items: center;
  gap: 0.2em;
  position: relative;
}

/* 表示モードトグル */
.display-mode-toggle {
  display: flex;
  gap: 4px;
  justify-content: center;
}
.display-mode-toggle button {
  padding: 6px 12px;
  border: 1px solid #ccc;
  border-radius: 6px;
  background: #fff;
  font-size: 0.9em;
  cursor: pointer;
}
.display-mode-toggle button.active {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary-dark);
}

/* その他のトレーニング */
.other-training {
  background: white;
  border-radius: 12px;
  padding: 16px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
  font-size: 14px;
  width: 240px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.other-training button {
  width: 100%;
  padding: 10px;
  border-radius: 8px;
  background: #f5f5f5;
  border: 1px solid #ccc;
  font-size: 14px;
  cursor: pointer;
}
.other-training h3 {
  font-family: var(--font-heading);
  font-weight: bold;
  font-size: 16px;
  margin-bottom: 8px;
  white-space: nowrap;
}

/* カード型の各セクション */
.white-key-section,
.black-key-section,
.inversion-section,
.other-training {
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
  padding: 16px;
}
.setup-wrapper {
  max-width: 400px;
  margin: 100px auto;
  padding: 2rem;
  border: 1px solid #ccc;
  border-radius: 12px;
  background: #fff;
  box-shadow: 0 4px 16px rgba(0,0,0,0.1);
  font-family: inherit;
  text-align: center;
}

.setup-wrapper h2 {
  font-size: 1.6rem;
  margin-bottom: 1rem;
  color: #333;
}

/* 温かみのある背景 */
.settings-screen {
  background: linear-gradient(135deg, #fff1e6, #ffe6f2); /* 柔らかいグラデーション */
  min-height: 100vh;
}

.growth-screen {
  background: linear-gradient(135deg, #fff1e6, #ffe6f2);
  min-height: 100vh;
}

.result-screen {
  background: linear-gradient(135deg, #fff1e6, #ffe6f2);
  min-height: 100vh;
}

/* Ensure the gradient covers the very top behind the fixed header */
.screen.active.growth-screen {
  margin-top: -56px; /* pull background up under the header */
  padding-top: calc(56px + 16px); /* retain default .screen padding below header */
  min-height: 100vh;
}

@media (max-width: 768px) {
  .main-section {
    flex-direction: column;
    gap: 16px;
  }

  .white-key-section,
  .black-key-section,
  .inversion-section,
  .other-training {
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    padding: 0;
    background: transparent;
    box-shadow: none;
    border-radius: 0;
  }
  .settings-card-row {
    width: 100%;
    flex-wrap: wrap;
    justify-content: flex-start;
  }
  .settings-card {
    flex-basis: calc(50% - 0.5em);
    max-width: calc(50% - 0.5em);
  }
  .settings-card.single-card { order: 1; }
  .settings-card.mode-card { order: 2; }
  .settings-card.bulk-card { order: 3; }
  .settings-card.preset-card { order: 4; }
  .settings-card.manual-card { order: 5; }
}


.setup-wrapper input,
.setup-wrapper select {
  width: 100%;
  padding: 0.7rem;
  font-size: 1rem;
  border: 1px solid #bbb;
  border-radius: 6px;
  margin-bottom: 1rem;
}

.setup-wrapper button {
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  background: #ffa500;
  color: #fff;
  border: none;
  border-radius: 6px;
  cursor: pointer;
}

.setup-wrapper button:hover {
  background: #e38c00;
}

.setup-note {
  margin-top: 0;
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
  color: #555;
}
.signup-wrapper {
  max-width: 400px;
  margin: 100px auto;
  padding: 2rem;
  border: 1px solid #ccc;
  border-radius: 12px;
  background: #fff;
  box-shadow: 0 4px 16px rgba(0,0,0,0.1);
  font-family: inherit;
}

.signup-title {
  text-align: center;
  font-size: 1.8rem;
  margin-bottom: 1.5rem;
  color: #333;
}

.signup-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.signup-form label {
  font-size: 0.9rem;
  color: #444;
}

.signup-form input {
  padding: 0.75rem;
  border: 1px solid #bbb;
  border-radius: 6px;
  font-size: 1rem;
  box-sizing: border-box;
}

/* Reserve space for the eye icon inside password inputs */
.signup-form .password-wrapper input {
  padding-right: 2.5rem;
}

.signup-button {
  padding: 0.75rem;
  background: #28a745;
  color: white;
  border: none;
  border-radius: 6px;
  font-size: 1rem;
  cursor: pointer;
  margin-top: 0.5rem;
}

.signup-button:hover {
  background: #218838;
}

.signup-actions {
  margin-top: 1.5em;
  display: flex;
  justify-content: center;
}

.signup-secondary {
  background: none;
  border: none;
  color: #007bff;
  font-size: 0.95em;
  cursor: pointer;
  text-decoration: underline;
}

.signup-secondary:hover {
  color: #0056b3;
}
.signup-divider {
  margin: 1.5rem 0 0.5rem 0;
  text-align: center;
  color: #888;
  font-size: 0.9rem;
}

.google-button {
  width: 100%;
  padding: 0.75rem;
  background-color: #4285f4;
  color: white;
  border: none;
  border-radius: 6px;
  font-size: 1rem;
  cursor: pointer;
}

.google-button:hover {
  background-color: #3367d6;
}


/* summary.css */

  .summary-screen {
    padding: 1em;
    max-width: 960px;
    margin: 0 auto;
    font-family: inherit;
    background: linear-gradient(135deg, #fff1e6, #ffe6f2);
    min-height: 100vh;
    width: 100%;
  }

#calendar,
#from-date,
#to-date {
  display: block;
  margin: 1em auto;
  padding: 0.5em;
  font-size: 1em;
  border: 1px solid #ccc;
  border-radius: 4px;
  width: 180px;
}

h2 {
  text-align: center;
  font-size: 1.6em;
  margin-top: 0.5em;
  margin-bottom: 1em;
}

.summary-text,
#range-result {
  text-align: center;
  margin-top: 1em;
  font-size: 1.1em;
}

table {
  border-collapse: collapse;
  width: 100%;
  margin: 1em auto;
  font-size: 0.95em;
}

table th,
table td {
  border: 1px solid #ccc;
  padding: 8px 12px;
  text-align: center;
}

table th {
  background-color: #f4f4f4;
  font-weight: bold;
}

.button-group {
  display: flex;
  justify-content: center;
  gap: 1em;
  margin: 2em 0;
}

button {
  background-color: #fff;
  border: 1px solid #ccc;
  padding: 0.6em 1.2em;
  font-size: 1em;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.2s ease;
}

button:hover {
  background-color: #f0f0f0;
}

button:active {
  background-color: #e6e6e6;
}

button#dummy-button {
  position: absolute;
  top: 1em;
  right: 1em;
  font-size: 0.9em;
  background-color: #eef;
  border-color: #88c;
}
.range-box {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5em;
  margin-top: 2em;
}

.range-box input[type="text"] {
  width: 120px;
  text-align: center;
}

.range-box button {
  flex-shrink: 0;
}

.result-wrap {
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, opacity 0.3s ease;
}

.result-wrap.open {
  max-height: none;
  opacity: 1;
}
/* =============================== */
/* 🎵 training.css - トレーニング画面専用 */
/* =============================== */

/* トレーニング画面のメイン構造 */
.screen-training {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  gap: 1em;
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
}

/* カラーボタンを並べるグリッド */
.training-button-area {
  display: grid;
  grid-template-columns: repeat(5, minmax(60px, 80px));
  gap: 12px;
  width: 100%;
  max-width: 500px;
  margin: 0 auto;
  justify-content: center;
}

/* 正方形ボタンの外枠 */
.square-btn {
  width: 100%;
  padding-bottom: 100%; /* 正方形 */
  position: relative;
}

/* 中身を中央に配置 */
.square-btn-content {
  font-size: 0.85rem;
  line-height: 1.1;
  word-break: keep-all;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  box-sizing: border-box;
}
.square-btn-content.note-small {
  font-size: calc(1em - 2pt) !important;
}
.square-btn-content.manual-mode {
  flex-direction: column;
  gap: 2px;
}
.square-btn-content.manual-mode .note-label {
  font-size: 0.85em;
  line-height: 1;
}
.square-btn-content.manual-mode.note-small .note-label {
  font-size: calc(0.85em - 2pt);
}

/* --- dynamic grid layouts --- */
.grid-container.cols-1 { grid-template-columns: repeat(1, 1fr); max-width: 240px; }
.grid-container.cols-2 { grid-template-columns: repeat(2, 1fr); max-width: 320px; }
.grid-container.cols-3 { grid-template-columns: repeat(3, 1fr); max-width: 360px; }
.grid-container.cols-4 { grid-template-columns: repeat(4, 1fr); max-width: 480px; }
.grid-container.cols-5 { grid-template-columns: repeat(5, minmax(60px, 80px)); max-width: 500px; }

.grid-container.cols-1 .square-btn-content {
  font-size: 1.2rem;
}

@media screen and (max-width: 480px) {
  .home-buttons button {
    width: 180px;
    padding: 10px 16px;
    font-size: 1rem;
    margin: 6px 0;
  }

  .home-buttons {
    gap: 0.5em; /* ボタン同士の余白も狭く */
  }

  .home-title {
    font-size: 2rem;
  }

  .screen-common {
    padding: 8px;
  }

  .grid-container {
    gap: 4px; /* スキマ縮小 */
    padding: 0 4px;
    max-width: 100%;
    width: 100%;
    box-sizing: border-box;
  }

  .grid-container button {
    font-size: 0.75rem;
    padding: 4px;
  }
}

@media screen and (min-width: 768px) {
  .training-button-area {
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
    max-width: 600px;
  }

  .square-btn-content {
    font-size: 1rem;
  }
}
.square-btn-content.correct-mark::after {
  content: "✔";
  position: absolute;
  top: -10px;
  right: -10px;
  font-size: 24px;
  color: gold;
  animation: star-glow 1.2s infinite ease-in-out;
  pointer-events: none;
  opacity: 0.8;
}

@keyframes star-glow {
  0%, 100% { transform: scale(1);    opacity: 0.8; }
  50%      { transform: scale(1.3);  opacity: 1; }
}

/* 正解ボタン強調用 */

/* 正解ボタン強調用 - 押すまで繰り返し揺れる */
.square-btn-content.correct-highlight {
  box-shadow: 0 0 15px 5px rgba(255, 255, 0, 0.7);
  animation: correct-shake-loop 1s ease-in-out infinite;
}

@keyframes correct-glow {
  0%   { box-shadow: 0 0 0 0 rgba(255, 255, 0, 0.7); }
  50%  { box-shadow: 0 0 15px 5px rgba(255, 255, 0, 0.7); }
  100% { box-shadow: 0 0 0 0 rgba(255, 255, 0, 0.7); }
}

@keyframes correct-shake {
  0%, 100% { transform: translateX(0); }
  25%      { transform: translateX(-2px); }
  50%      { transform: translateX(2px); }
  75%      { transform: translateX(-2px); }
}

/* 1秒周期でぷるぷる震えるアニメーション */
@keyframes correct-shake-loop {
  0%, 40%, 100% { transform: translateX(0); }
  10%           { transform: translateX(-2px); }
  20%           { transform: translateX(2px); }
  30%           { transform: translateX(-2px); }
}

/* === chord color classes === */
.aka       { background-color: red;       color: white; }
.kiiro     { background-color: #FFD700;   color: black; }
.ao        { background-color: blue;      color: white; }
.kuro      { background-color: black;     color: white; }
.midori    { background-color: green;     color: white; }
.orange    { background-color: #FF8C00;   color: white; }
.murasaki  { background-color: purple;    color: white; }
.pink      { background-color: pink;      color: white; }
.chairo    { background-color: brown;     color: white; }
.kimidori  { background-color: limegreen; color: white; }
.usudai    { background-color: #F5CBA7;   color: white; }
.fuji      { background-color: violet;    color: white; }
.hai       { background-color: gray;      color: white; }
.mizuiro   { background-color: skyblue;   color: white; }
.white     { background-color: white;     color: black; border: 1px solid #ccc; }

/* --- Single note question --- */
.single-note-options button {
  font-size: 1.5rem;
  width: 4em;
  height: 4em;
  padding: 0.5em;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
}

/* 下部の操作ボタンを常に画面下部に固定 */
#training-footer {
  position: fixed;
  bottom: 1em;
  left: 0;
  right: 0;
  display: flex;
  justify-content: center;
  gap: 1em;
  z-index: 1000;
}

/* --- Progress bar on training screen --- */
.progress-wrapper {
  position: relative;
  width: 100%;
}

#progress-bar {
  width: 100%;
  height: 2em;
  display: block;
}

#progress-counter {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-weight: bold;
  pointer-events: none;
}
/* training_full.css - 単音テスト(本気)専用 */

.piano-container {
  position: relative;
  width: 100%;
  max-width: 420px;
  height: 160px;
  margin: 0 auto;
}

.white-keys {
  display: flex;
  height: 100%;
}

.key-white,
.key-black {
  font-size: 0.8rem;
  line-height: 1;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  user-select: none;
  cursor: pointer;
}

.key-white {
  flex: 1;
  border: 1px solid #333;
  background: #fff;
}

.key-black {
  position: absolute;
  width: calc(100% / 7 * 0.6);
  height: 60%;
  background: #000;
  color: #fff;
  border: 1px solid #333;
  top: 0;
  z-index: 2;
  font-size: 0.75rem;
  padding-bottom: 2px;
}

.key-black.pos1 { left: calc(100% / 7 * 0.75); }
.key-black.pos2 { left: calc(100% / 7 * 1.75); }
.key-black.pos3 { left: calc(100% / 7 * 3.75); }
.key-black.pos4 { left: calc(100% / 7 * 4.75); }
.key-black.pos5 { left: calc(100% / 7 * 5.75); }

.key-highlight {
  box-shadow: 0 0 10px 4px rgba(255, 215, 0, 0.9);
  z-index: 3;
}

#feedback {
  text-align: center;
  margin: 0.5em 0;
  height: 2em;
  font-size: 1.5em;
}

.piano-container.disabled {
  pointer-events: none;
}
.piano-container.disabled .key-white,
.piano-container.disabled .key-black,
button.disabled {
  opacity: 0.5;
}

/* PC表示では分析画面・マイページ・プランページを横幅いっぱいに */
@media (min-width: 768px) {
  .summary-screen,
  .growth-screen,
  .result-screen,
  .mypage-screen,
  .pricing-page,
  .plan-info-screen {
    max-width: none;
    margin: 0;
  }

  /* Allow analysis/growth pages to use the full page height */
  .summary-screen,
  .growth-screen {
    padding: 0;
    min-height: calc(100vh - 56px);
    height: auto;
    overflow-y: visible;
  }
}

/* === confetti effect for unlock === */
.confetti-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  overflow: hidden;
  z-index: 2000;
}
.confetti-piece {
  position: absolute;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  opacity: 0.9;
  animation: confetti-fall 1.2s linear forwards;
}
@keyframes confetti-fall {
  from { transform: translateY(-10vh) rotate(0deg); }
  to   { transform: translateY(100vh) rotate(720deg); }
}
/* Toast notification */
.toast {
  position: fixed;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0, 0, 0, 0.8);
  color: #fff;
  padding: 8px 16px;
  border-radius: 4px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  z-index: 1001;
  font-size: 14px;
}
.toast.show {
  opacity: 1;
}