body {
    font-family: system-ui, -apple-system, "Segoe UI", "Hiragino Sans", "Noto Sans JP", sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    min-height: 100vh;
    margin: 0;
    background-color: transparent;
    position: relative;
    z-index: 0;
}

/* Theme variables (defaults — Light テーマに合わせる) */
:root {
    --base-bg-color: #f4f5f7;                 /* 背景のベースカラー */
    --text-on-bg: #111318;                    /* 背景上のテキスト色 */
    --text-on-bg-soft: rgba(0,0,0,0.55);      /* 背景上のサブテキスト色 */
    --accent: #6f8cff;                        /* CTA / プライマリ色 */
    --accent-strong: #4f6dee;
    --card-bg: rgba(17, 20, 35, 0.84);
    --card-border: rgba(255,255,255,0.14);
    --card-shadow: 0 18px 44px rgba(0,0,0,0.24);
    --radius: 14px;
}

/* ---------- Common header ---------- */

/* ---------- Common shell ---------- */
.app-header { width: 100%; }
.app-shell {
    width: 100%;
    max-width: 1080px;
    box-sizing: border-box;
    padding: 24px max(20px, calc((100vw - 1080px) / 2));
    color: var(--text-on-bg);
}

/* ---------- Card ---------- */
.card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 18px;
    padding: 18px;
    box-shadow: var(--card-shadow);
    color: var(--text-on-bg);
}
.card h2 {
    margin: 0 0 12px;
    font-size: 1.05rem;
    font-weight: 600;
    letter-spacing: 0.01em;
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    min-height: 42px;
    padding: 0 18px;
    border-radius: 12px;
    border: 1px solid rgba(255,255,255,0.18);
    background: rgba(255,255,255,0.06);
    color: var(--text-on-bg);
    font-size: 0.95rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s, transform 0.05s;
}
.btn:hover { background: rgba(255,255,255,0.12); }
.btn:active { transform: translateY(1px); }
.btn-primary {
    background: linear-gradient(180deg, var(--accent), var(--accent-strong));
    border-color: var(--accent-strong);
    color: #fff;
    box-shadow: 0 6px 16px rgba(79,109,238,0.32);
}
.btn-primary:hover {
    background: linear-gradient(180deg, #7d99ff, #5775ee);
}
.btn-ghost { background: transparent; }
.btn-ghost:hover { background: rgba(255,255,255,0.08); }
.btn-lg { min-height: 52px; padding: 0 26px; font-size: 1.02rem; border-radius: 14px; }

/* ---------- LP ---------- */
.lp-hero {
    padding: 72px 0 56px;
    text-align: center;
}
.lp-eyebrow {
    margin: 0 0 12px;
    font-family: "M PLUS 1 Code", "JetBrains Mono", monospace;
    font-size: 0.86rem;
    letter-spacing: 0.18em;
    color: var(--text-on-bg-soft);
    text-transform: uppercase;
}
.lp-title {
    margin: 0 0 16px;
    font-family: "M PLUS 1 Code", "JetBrains Mono", monospace;
    font-size: clamp(2.4rem, 6vw, 4rem);
    font-weight: 700;
    letter-spacing: 0.02em;
    line-height: 1.1;
    background: linear-gradient(135deg, #ffd24a 0%, #ff7a59 50%, #6f8cff 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
.lp-tagline {
    margin: 0 auto 32px;
    max-width: 640px;
    color: var(--text-on-bg-soft);
    font-size: 1.05rem;
    line-height: 1.6;
}
.lp-cta {
    display: inline-flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
}

.lp-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 18px;
    padding: 12px 0 56px;
}
.lp-feature {
    padding: 22px;
}
.lp-feature .feat-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px; height: 40px;
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(111,140,255,0.2), rgba(255,122,89,0.2));
    color: var(--text-on-bg);
    margin-bottom: 12px;
    font-size: 1.2rem;
}
.lp-feature h3 {
    margin: 0 0 8px;
    font-size: 1.02rem;
    font-weight: 600;
}
.lp-feature p {
    margin: 0;
    color: var(--text-on-bg-soft);
    font-size: 0.92rem;
    line-height: 1.55;
}

.lp-footer {
    padding: 28px 0 36px;
    text-align: center;
    color: var(--text-on-bg-soft);
    font-size: 0.82rem;
    border-top: 1px solid rgba(255,255,255,0.08);
}

/* ---------- Config page ---------- */
.config-hero { padding: 36px 0 24px; }
.config-title {
    margin: 0 0 8px;
    font-family: "M PLUS 1 Code", "JetBrains Mono", monospace;
    font-size: clamp(1.6rem, 3.4vw, 2.2rem);
    font-weight: 700;
    letter-spacing: 0.02em;
}
.config-subtitle {
    margin: 0 0 18px;
    color: var(--text-on-bg-soft);
    font-size: 0.98rem;
    line-height: 1.55;
    max-width: 720px;
}
.config-cta { margin-bottom: 8px; }
.config-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 18px;
    padding-bottom: 32px;
}

#stats {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    margin-bottom: 8px;
    color: var(--text-on-bg);
    text-shadow: 0 1px 2px rgba(0,0,0,0.4);
}
.stat-name {
    font-size: 0.95rem;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 220px;
}
.stat-right { display: flex; align-items: center; gap: 18px; }
.stat-text { display: flex; align-items: baseline; gap: 22px; flex-wrap: wrap; }
.stat-text-item { display: inline-flex; align-items: baseline; gap: 6px; }
.stat-text-label { font-size: 0.78rem; opacity: 0.7; letter-spacing: 0.06em; }
.stat-text-num { font-size: 1.5rem; font-weight: 700; line-height: 1; font-variant-numeric: tabular-nums; }
.stat-text-num.count-miss { color: #ff6b6b; }
.stat-text-unit { font-size: 0.85rem; opacity: 0.7; margin-left: 1px; }

.stat-gauges { display: flex; align-items: center; gap: 14px; }
.stat-gauge { display: flex; flex-direction: column; align-items: center; justify-content: flex-end; width: 96px; }
.stat-gauge .gauge-value,
.stat-gauge .gauge-label { font-size: 0.72rem; opacity: 0.75; letter-spacing: 0.05em; margin-top: 2px; }
.stat-gauge .gauge-value { display: flex; align-items: baseline; gap: 3px; }
.stat-gauge .gauge-value > span:first-child { font-size: 1rem; font-weight: 700; opacity: 1; font-variant-numeric: tabular-nums; }
.stat-gauge .gauge-unit { font-size: 0.7rem; opacity: 0.7; }

/* WPM tachometer (semicircle r=40, arc length = π*40 ≈ 125.66) */
.gauge-wpm { width: 96px; height: auto; display: block; }
.gauge-wpm .gauge-bg { fill: none; stroke: var(--text-on-bg-soft); stroke-width: 7; stroke-linecap: round; opacity: 0.3; }
.gauge-wpm .gauge-fg { fill: none; stroke: #5aa4ff; stroke-width: 7; stroke-linecap: round;
    stroke-dasharray: 125.66; stroke-dashoffset: 125.66;
    transition: stroke-dashoffset 0.3s ease, stroke 0.3s ease;
    filter: drop-shadow(0 0 3px rgba(90,164,255,0.5)); }
.gauge-wpm .gauge-needle { stroke: var(--text-on-bg); stroke-width: 2.2; stroke-linecap: round;
    transform-origin: 50px 55px; transform: rotate(-90deg); transition: transform 0.3s ease; }
.gauge-wpm .gauge-pivot { fill: var(--text-on-bg); }

/* Accuracy ring (r=32, circumference = 2π*32 ≈ 201.06) */
.ring-accuracy { width: 76px; height: 76px; display: block; }
.ring-accuracy .ring-bg { fill: none; stroke: var(--text-on-bg-soft); stroke-width: 6; opacity: 0.3; }
.ring-accuracy .ring-fg { fill: none; stroke: #3ddc84; stroke-width: 6; stroke-linecap: round;
    stroke-dasharray: 201.06; stroke-dashoffset: 0;
    transition: stroke-dashoffset 0.3s ease, stroke 0.3s ease;
    filter: drop-shadow(0 0 3px rgba(61,220,132,0.5)); }
.ring-accuracy .ring-text { fill: var(--text-on-bg); font-size: 18px; font-weight: 700; font-family: inherit; }
.ring-accuracy .ring-pct { font-size: 11px; font-weight: 500; }

.menu-open {
    overflow: hidden;
}

.menu-screen {
    position: fixed;
    inset: 0;
    z-index: 30;
    display: none;
    overflow-y: auto;
    padding: 32px 20px;
    background:
      radial-gradient(circle at top left, rgba(255,255,255,0.14), transparent 32%),
      radial-gradient(circle at top right, rgba(0,0,0,0.18), transparent 28%),
      rgba(9, 11, 22, 0.72);
    backdrop-filter: blur(10px);
}

.menu-screen.visible {
    display: block;
}

.menu-shell {
    width: min(1120px, 100%);
    margin: 0 auto;
    color: #f2f5ff;
}

.menu-hero {
    margin-bottom: 22px;
}

.menu-eyebrow {
    margin: 0 0 8px;
    font-size: 0.82rem;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    color: rgba(242,245,255,0.68);
}

.menu-hero h1 {
    margin: 0 0 10px;
    font-size: clamp(2rem, 4vw, 3rem);
}

.menu-copy {
    margin: 0 0 18px;
    max-width: 52rem;
    line-height: 1.7;
    color: rgba(242,245,255,0.8);
}

.menu-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.menu-actions.compact {
    margin-top: 6px;
}

.menu-primary-btn,
.menu-secondary-btn,
.menu-link-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 0 16px;
    border-radius: 999px;
    border: 1px solid rgba(255,255,255,0.18);
    font-size: 0.96rem;
    text-decoration: none;
    cursor: pointer;
}

.menu-primary-btn {
    background: #f0f4ff;
    color: #18203b;
    border-color: transparent;
}

.menu-secondary-btn,
.menu-link-btn {
    background: rgba(255,255,255,0.06);
    color: #f2f5ff;
}

.menu-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 16px;
}

.menu-card {
    padding: 18px;
    border: 1px solid rgba(255,255,255,0.14);
    border-radius: 18px;
    background: rgba(17, 20, 35, 0.84);
    box-shadow: 0 18px 44px rgba(0,0,0,0.24);
}

.menu-card h2 {
    margin: 0 0 14px;
    font-size: 1.05rem;
}

.menu-field {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 12px;
    color: rgba(242,245,255,0.82);
    font-size: 0.88rem;
}

.menu-field select {
    min-height: 38px;
    padding: 0 10px;
    border-radius: 10px;
    border: 1px solid rgba(255,255,255,0.18);
    background: rgba(255,255,255,0.06);
    color: #f2f5ff;
}

.menu-field select option {
    color: #111;
    background: #fff;
}

.menu-note {
    margin: 0;
    color: rgba(242,245,255,0.68);
}

.menu-toggle-list {
    display: grid;
    gap: 10px;
}

.menu-toggle-list button {
    min-height: 40px;
    padding: 0 14px;
    border-radius: 10px;
    border: 1px solid rgba(255,255,255,0.18);
    background: rgba(255,255,255,0.06);
    color: #f2f5ff;
    text-align: left;
}

.menu-roman-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 10px 12px;
}

.menu-sound-row {
    display: flex;
    align-items: flex-end;
    gap: 8px;
    margin-bottom: 12px;
}

.menu-sound-row .menu-field {
    flex: 1;
    margin-bottom: 0;
}

.sound-preview-btn {
    flex: 0 0 auto;
    min-height: 38px;
    min-width: 44px;
    padding: 0 12px;
    border-radius: 10px;
    border: 1px solid rgba(255,255,255,0.18);
    background: rgba(255,255,255,0.06);
    color: #f2f5ff;
    cursor: pointer;
    font-size: 1rem;
    line-height: 1;
}

.sound-preview-btn:hover {
    background: rgba(255,255,255,0.12);
}

.sound-preview-btn:active {
    transform: translateY(1px);
}

#control-bar {
    display: flex;
    gap: 12px;
    align-items: center;
    justify-content: space-between;
    width: min(1080px, calc(100vw - 32px));
    margin: 18px auto 8px;
    padding: 10px 14px;
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 14px;
    background: rgba(255,255,255,0.05);
    box-shadow: 0 12px 30px rgba(0,0,0,0.16);
    backdrop-filter: blur(8px);
}

#control-bar button {
    font-size: 0.9rem;
    padding: 0.25rem 0.5rem;
}

#theme-preset {
    font-size: 0.9rem;
    padding: 0.25rem 0.35rem;
}

#prompt-set-select {
    font-size: 0.9rem;
    padding: 0.25rem 0.35rem;
}

#reset-settings-btn {
    font-size: 0.85rem;
}


#container {
    display: flex; /* 水平方向にお題とキーボードを並べる */
    flex-direction: column;
    align-items: center;
    width: 100%;
    max-width: 1000px; /* キーボード幅(≈880px)を収めて中央寄せしやすく */
    margin: 0 auto 24px;
}

#prompt {
    margin-bottom: 20px;
    font-size: 1.5rem;
    color: var(--text-on-bg);
    text-align: center;
}

#input-display {
    font-size: 1rem; /* 日本語より控えめに */
    letter-spacing: 0.35rem;
    text-align: center;
    color: var(--text-on-bg);
    margin-bottom: 6px;
}

#keyboard {
  display: block;
  background-color: #ddd;
  padding: 0;
  border-radius: 10px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
  margin-left: auto;
  margin-right: auto;
  position: relative;
  box-sizing: content-box;
}

/* 全画面オーバーレイ（開始前 / 終了時） */
.typing-overlay {
  position: fixed;
  top: 56px; /* ヘッダーの下から */
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    repeating-linear-gradient(
      0deg,
      transparent, transparent 3px,
      rgba(0,0,0,0.03) 3px, rgba(0,0,0,0.03) 4px
    ),
    repeating-linear-gradient(
      90deg,
      transparent, transparent 3px,
      rgba(0,0,0,0.03) 3px, rgba(0,0,0,0.03) 4px
    ),
    rgba(0,0,0,0.35);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}
.typing-overlay__text {
  color: #fff;
  font-size: 2.5rem;
  font-weight: 700;
  text-shadow: 0 3px 8px rgba(0,0,0,0.5);
  letter-spacing: 0.05em;
}
.typing-overlay__finish {
  text-align: center;
}
.typing-overlay__message {
  color: #fff;
  font-size: 2.2rem;
  font-weight: 700;
  text-shadow: 0 3px 8px rgba(0,0,0,0.5);
  margin-bottom: 32px;
}
.typing-overlay__actions {
  display: flex;
  gap: 16px;
  justify-content: center;
}
.typing-overlay__actions .btn {
  font-size: 1.1rem;
  padding: 12px 32px;
  border-radius: 8px;
  background: rgba(255,255,255,0.15);
  color: #fff;
  border: 1px solid rgba(255,255,255,0.3);
  cursor: pointer;
  text-decoration: none;
  font-weight: 600;
  transition: background 0.15s;
}
.typing-overlay__actions .btn:hover {
  background: rgba(255,255,255,0.25);
}
.typing-overlay__actions .btn--primary {
  background: var(--accent, #3b6df0);
  border-color: var(--accent, #3b6df0);
}
.typing-overlay__actions .btn--primary:hover {
  background: var(--accent-hover, #4f7ef5);
}
.hidden { display: none !important; }

/* テキスト演出画面 */
#text-stage-screen {
    position: fixed;
    top: 56px; left: 0; right: 0; bottom: 0;
    z-index: 15;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: rgba(0,0,0,0.85);
    color: #eee;
    padding: 48px;
}
#text-stage-screen .btn {
    background: rgba(255,255,255,0.15);
    color: #fff;
    border: 1px solid rgba(255,255,255,0.3);
    font-size: 1.1rem;
    padding: 10px 32px;
    transition: background 0.3s, border-color 0.3s;
}
#text-stage-screen .btn:hover { background: rgba(255,255,255,0.25); }
#text-stage-screen .btn.btn--primary {
    background: var(--accent, #3b6df0);
    border-color: var(--accent, #3b6df0);
}
#text-stage-screen .btn.btn--primary:hover {
    background: var(--accent-hover, #4f7ef5);
}
#text-stage-content {
    max-width: 720px;
    width: 100%;
    font-size: 2.4rem;
    line-height: 2;
    text-align: center;
    position: relative;
}
/* スクロール効果: 全体を下から上へスクロール、上下端でフェード */
#text-stage-content.scroll-mode {
    height: 60vh;
    overflow: hidden;
    mask-image: linear-gradient(to bottom, transparent 0%, black 20%, black 80%, transparent 100%);
    -webkit-mask-image: linear-gradient(to bottom, transparent 0%, black 20%, black 80%, transparent 100%);
}
#text-stage-content.scroll-mode .scroll-inner {
    animation: text-scroll-up var(--scroll-duration, 12s) linear forwards;
    padding-top: 60vh;
    padding-bottom: 30vh;
}
@keyframes text-scroll-up {
    0%   { transform: translateY(0); }
    100% { transform: translateY(-100%); }
}
/* タイプライター効果 */
#text-stage-content .typewriter-cursor {
    display: inline-block;
    width: 2px;
    height: 1.2em;
    background: #eee;
    vertical-align: text-bottom;
    animation: blink-cursor 0.6s step-end infinite;
}
@keyframes blink-cursor {
    50% { opacity: 0; }
}

.key {
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: #fff;
  border: 1px solid #ccc;
  border-radius: 5px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  box-sizing: border-box;
  font-size: 14px;
  text-align: center;
  transition: background-color 0.2s;
  width: 100%;
  height: 100%;
}

.key[data-code="Enter0"] {
  border-bottom-left-radius: 0;
  border-bottom: none;
}

.key[data-code="Enter"] {
  border-top-left-radius: 0;
}
/* 通常のキー */
.key.color1 {
    background-color: #fff;
    border: 1px solid #ccc;
}

/* 特殊なキー */
.key.color2 {
    background-color: #cdeee7;
    border: 2px solid #8dabe4;
}

/* ホームポジション */
.key.color3 {
    /* border: 3px solid rgb(100, 100, 200); */
}

/* 禁止キー */
.key.forbidden {
    background-color: #666;
    color: #fff;
    cursor: not-allowed;
}

/* 押下キーハイライト */
.key.active {
    background-color: #ffcccb;
}
.key.active-enabled {
    background-color: #3336cb;
}


/***********************
プログレスバー
************************/
#progress-container {
    /* キーボード幅に合わせる: 15.75U * 55 + 2 * 24 ≈ 914px */
    width: min(914px, 100%);
    background-color: #e0e0e0;
    border-radius: 3px;
    margin: 6px auto 10px;
    height: 6px;
    overflow: hidden;
}

#progress-bar {
    width: 0%;
    height: 100%;
    background-color: #76c7c0;
    border-radius: 3px;
    transition: width 0.3s;
}

/***********************
お題の進行状況を色分け (#prompt-display / #input-display スコープ側で具体定義)
************************/

#prompt.error {
    color: red !important; /* 強制的に適用 */
    font-weight: bold;
    transition: color 0.3s;
}

.key.highlight {
    border: 3px solid #ff9900;
    background-color: #fff3e0;
}

.next-prompt {
    color: #007bff;
    font-weight: bold;
    font-size: 1.2rem;
}

#prompt-display {
    color: var(--text-on-bg);
    font-size: clamp(2rem, 4.5vw, 3.2rem);
    line-height: 1.25;
    text-align: center;
    margin-top: 4px;
    font-family: "M PLUS 1 Code", "JetBrains Mono", "Noto Sans Mono CJK JP", "ＭＳ ゴシック", "MS Gothic", monospace;
}
#prompt-display span { margin: 0; padding: 0; line-height: normal; }
#prompt-display .checked { color: var(--text-on-bg-soft); opacity: 0.55; }
#prompt-display .current { color: #ffd24a; background-color: transparent; font-weight: normal; text-decoration: none; }
#prompt-display .unchecked { color: var(--text-on-bg); }

#input-display {
    display: flex; /* フレックスボックスで横並びに */
    justify-content: center;
    font-family: "JetBrains Mono", "M PLUS 1 Code", "Consolas", "Menlo", monospace;
}

#input-display span {
    margin: 0;
    padding: 0;
    line-height: normal;
}

#input-display .checked { color: var(--text-on-bg-soft); opacity: 0.5; }
#input-display .current { color: #ffd24a; font-weight: 700; text-decoration: none; }
#input-display .unchecked { color: var(--text-on-bg); opacity: 0.95; }


/***********************
ミスタイプ演出
************************/
@keyframes shake {
    0%   { transform: translate(0, 0); }
    15%  { transform: translate(-10px, -4px); }
    30%  { transform: translate(10px, 4px); }
    45%  { transform: translate(-6px, -3px); }
    60%  { transform: translate(6px, 3px); }
    75%  { transform: translate(-3px, -2px); }
    90%  { transform: translate(3px, 2px); }
    100% { transform: translate(0, 0); }
  }
  
  .shake {
    animation: shake 0.4s ease-in-out;
  }

/***********************
プログレス演出
************************/
#zoom-wrapper {
    width: min(1080px, calc(100vw - 24px));
    margin: 0 auto;
    transform: scale(1);
    transform-origin: top center;
    transition: transform 0.2s ease-out;
}
body::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: var(--base-bg-color);
    background-image: var(--lesson-bg-image, none);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    z-index: -2;
    opacity: var(--bg-opacity, 1);
    transition: opacity 0.3s ease;
}
/* 背景画像の上に半透明フィルター（文字の視認性確保） */
body::after {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(255, 255, 255, 0.6);
    z-index: -1;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.3s ease;
}
body.has-bg-image::after {
    opacity: 1;
}
  


/* Confetti */
.confetti-container {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    pointer-events: none;
    overflow: hidden;
    z-index: 9999;
}
.confetti-piece {
    position: absolute;
    opacity: 0.95;
    animation-name: confetti-pop;
    animation-timing-function: ease-out;
    animation-fill-mode: forwards;
}
@keyframes confetti-pop {
    0%   { transform: translate(0, 0) rotate(0deg); opacity: 1; }
    40%  { transform: translate(var(--dx, 100px), var(--dy, -300px)) rotate(360deg); opacity: 1; }
    100% { transform: translate(var(--dx, 100px), calc(var(--dy, -300px) + 120vh)) rotate(720deg); opacity: 0; }
}

/* Control bar consistency */
#control-bar {
    gap: 16px;
    display: flex;
    flex-wrap: wrap;
    color: var(--text-on-bg); /* 全体の前景色をテーマに合わせる */
}
#control-bar .btn-group {
    display: inline-flex;
    gap: 8px;
    align-items: center;
}
#control-bar .ctrl-group {
    display: inline-flex;
    align-items: center;
    gap: 6px; /* アイコンとプルダウンは近め */
    margin-right: 4px; /* グループ間は広め（上位gapと合わせて見せる） */
}
#control-bar button, #control-bar a, #control-bar select, #control-bar label {
    font-size: 0.95rem;
    line-height: 1.5rem;
}
#control-bar button, #control-bar a {
    padding: 0.35rem 0.8rem;
    color: var(--text-on-bg);                 /* 折りたたみ時の表示テキスト */
    background: rgba(255,255,255,0.06);       /* 折りたたみ時の背景をわずかに明るく */
    border: 1px solid var(--text-on-bg-soft); /* テーマに応じた淡い枠線 */
    border-radius: 999px;
    text-decoration: none;
}
#control-bar label {
    color: var(--text-on-bg);
    opacity: 0.9;
}

.status-group {
    flex-wrap: wrap;
    justify-content: flex-end;
}

#current-set-badge,
#current-style-badge {
    padding: 0.25rem 0.7rem;
    border-radius: 999px;
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.12);
    color: var(--text-on-bg);
    white-space: nowrap;
}

@media (max-width: 860px) {
    #control-bar {
        flex-direction: column;
        align-items: stretch;
    }

    #control-bar .btn-group,
    .status-group {
        justify-content: space-between;
    }
}


/* v2 absolute keyboard keys (visual is inherited from .key) */
.key2 { padding: 0; }
.key2 .legend { position: absolute; line-height: 1; pointer-events: none; font-family: system-ui, -apple-system, "Segoe UI", "Noto Sans JP", sans-serif; }
/* JIS: 左上=英字 (英字キー) または シフト記号 (数字/記号キー) */
.key2 .legend.ul { top: 5px; left: 6px; font-size: 13px; color: #222; font-weight: 500; }
/* JIS: 右上=シフトかな (小書きかな等) — 控えめ */
.key2 .legend.ur { top: 5px; right: 6px; font-size: 10px; color: #666; text-align: right; }
/* JIS: 左下=数字/記号の基本 (英字キーでは未使用が普通) */
.key2 .legend.ll { bottom: 5px; left: 6px; font-size: 13px; color: #222; font-weight: 500; }
/* JIS: 右下=かな */
.key2 .legend.lr { bottom: 5px; right: 6px; font-size: 12px; color: #333; text-align: right; }
/* 特殊キーのラベル (Tab, Shift, Enter 等) */
.key2 .legend.center { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); text-align: center; width: 92%; font-size: 13px; color: #222; }
.key2 .legend.center > div { line-height: 1.15; }

/* ------------------------------------------------------------------
 * Cut-in overlay
 * ----------------------------------------------------------------- */
#cutin-layer {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 9000;
    overflow: hidden;
}
.cutin {
    position: absolute;
    pointer-events: none;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 16px 22px;
    background: rgba(20, 20, 28, 0.86);
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 14px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    max-width: min(520px, 80vw);
    font-family: "M PLUS 1 Code", "Noto Sans JP", system-ui, sans-serif;
    will-change: transform, opacity;
}
.cutin__img {
    width: 96px;
    height: 96px;
    object-fit: contain;
    flex: 0 0 auto;
}
.cutin__text {
    font-size: 22px;
    font-weight: 700;
    line-height: 1.35;
    letter-spacing: 0.02em;
    white-space: pre-line;
}

.cutin--center { top: 50%; left: 50%; transform: translate(-50%, -50%); }
.cutin--top-left     { top: 24px; left: 24px; }
.cutin--top-right    { top: 24px; right: 24px; }
.cutin--bottom-left  { bottom: 24px; left: 24px; }
.cutin--bottom-right { bottom: 24px; right: 24px; }
.cutin--top-banner {
    top: var(--cutin-header-h, 0px); left: 0; right: 0;
    max-width: none;
    border-radius: 0 0 14px 14px;
    justify-content: center;
}
.cutin--bottom-banner {
    bottom: 0; left: 0; right: 0;
    max-width: none;
    border-radius: 14px 14px 0 0;
    justify-content: center;
}

.cutin--fade  { animation: cutin-fade-in 280ms ease-out both; }
.cutin--pop   { animation: cutin-pop-in 360ms cubic-bezier(.2,.9,.3,1.3) both; }
.cutin--shake { animation: cutin-fade-in 200ms ease-out both, cutin-shake 520ms ease-in-out 200ms 2; }

.cutin--slide.cutin--center        { animation: cutin-slide-in-down 360ms cubic-bezier(.2,.7,.2,1) both; }
.cutin--slide.cutin--top-left,
.cutin--slide.cutin--bottom-left   { animation: cutin-slide-in-left 360ms cubic-bezier(.2,.7,.2,1) both; }
.cutin--slide.cutin--top-right,
.cutin--slide.cutin--bottom-right  { animation: cutin-slide-in-right 360ms cubic-bezier(.2,.7,.2,1) both; }
.cutin--slide.cutin--top-banner    { animation: cutin-slide-in-down 360ms cubic-bezier(.2,.7,.2,1) both; }
.cutin--slide.cutin--bottom-banner { animation: cutin-slide-in-up 360ms cubic-bezier(.2,.7,.2,1) both; }

.cutin--exit { animation: cutin-fade-out 280ms ease-in forwards !important; }

@keyframes cutin-fade-in {
    from { opacity: 0; }
    to   { opacity: 1; }
}
@keyframes cutin-fade-out {
    from { opacity: 1; }
    to   { opacity: 0; }
}
.cutin--pop.cutin--center { --cx: -50%; --cy: -50%; }
@keyframes cutin-pop-in {
    0%   { opacity: 0; transform: translate(var(--cx,0), var(--cy,0)) scale(0.2); }
    70%  { opacity: 1; transform: translate(var(--cx,0), var(--cy,0)) scale(1.18); }
    100% { opacity: 1; transform: translate(var(--cx,0), var(--cy,0)) scale(1); }
}
.cutin--slide.cutin--center { --cx: -50%; --cy: -50%; }
@keyframes cutin-slide-in-down {
    from { opacity: 0; transform: translate(var(--cx,0), calc(var(--cy,0) - 60px)); }
    to   { opacity: 1; transform: translate(var(--cx,0), var(--cy,0)); }
}
@keyframes cutin-slide-in-up {
    from { opacity: 0; transform: translate(var(--cx,0), calc(var(--cy,0) + 60px)); }
    to   { opacity: 1; transform: translate(var(--cx,0), var(--cy,0)); }
}
@keyframes cutin-slide-in-left {
    from { opacity: 0; transform: translateX(-120%); }
    to   { opacity: 1; transform: translateX(0); }
}
@keyframes cutin-slide-in-right {
    from { opacity: 0; transform: translateX(120%); }
    to   { opacity: 1; transform: translateX(0); }
}
.cutin--shake.cutin--center { --cx: -50%; --cy: -50%; }
@keyframes cutin-shake {
    0%, 100% { transform: translate(var(--cx,0), var(--cy,0)) rotate(0); }
    20% { transform: translate(calc(var(--cx,0) - 8px), var(--cy,0)) rotate(-2deg); }
    40% { transform: translate(calc(var(--cx,0) + 8px), var(--cy,0)) rotate(2deg); }
    60% { transform: translate(calc(var(--cx,0) - 6px), var(--cy,0)) rotate(-1deg); }
    80% { transform: translate(calc(var(--cx,0) + 6px), var(--cy,0)) rotate(1deg); }
}

/* サイズバリアント (省略時は md = 既定スタイル) */
.cutin--size-sm .cutin__img { width: 64px; height: 64px; }
.cutin--size-sm .cutin__text { font-size: 16px; }
.cutin--size-sm { max-width: min(400px, 82vw); padding: 12px 16px; }

.cutin--size-lg .cutin__img { width: min(220px, 32vw); height: min(220px, 32vw); }
.cutin--size-lg .cutin__text { font-size: 30px; line-height: 1.25; }
.cutin--size-lg { max-width: min(760px, 92vw); padding: 20px 26px; gap: 16px; }

.cutin--size-xl .cutin__img { width: min(440px, 60vw); height: min(440px, 60vw); }
.cutin--size-xl .cutin__text { font-size: 40px; line-height: 1.18; }
.cutin--size-xl { max-width: 94vw; padding: 24px 32px; gap: 20px; }
/* 特大は背景を半透明にして画像を前面に */
.cutin--size-xl { background: rgba(20, 20, 28, 0.55); border-color: rgba(255,255,255,0.10); }

@media (max-width: 600px) {
    .cutin__img { width: 64px; height: 64px; }
    .cutin__text { font-size: 18px; }
    .cutin--size-lg .cutin__img { width: min(180px, 48vw); height: min(180px, 48vw); }
    .cutin--size-lg .cutin__text { font-size: 22px; }
    .cutin--size-xl .cutin__img { width: min(280px, 70vw); height: min(280px, 70vw); }
    .cutin--size-xl .cutin__text { font-size: 28px; }
}
@media (prefers-reduced-motion: reduce) {
    .cutin, .cutin--exit { animation: cutin-fade-in 1ms linear both !important; }
}