/* ═══════════════════════════════════════════════════════
   金賢講音程聽力 v3.0 — ear-interval.css
   所有樣式限定在 .eit-app 內，不污染 WordPress 主題
   ═══════════════════════════════════════════════════════ */

.eit-app {
  --eit-bg:      #0d0d0f;
  --eit-surface: #16161a;
  --eit-s2:      #1e1e24;
  --eit-border:  #2a2a35;
  --eit-accent:  #c8a96e;
  --eit-accent2: #7eb8c8;
  --eit-text:    #e8e4dc;
  --eit-muted:   #6b6870;
  --eit-ok:      #6ec8a0;
  --eit-err:     #c86e7e;
  --eit-mono:    'Courier New', Courier, monospace;
  --eit-serif:   Georgia, 'Times New Roman', serif;

  background: var(--eit-bg);
  color: var(--eit-text);
  font-family: var(--eit-mono);
  padding: 36px 16px 52px;
  border-radius: 8px;
  position: relative;
  overflow: hidden;
  box-sizing: border-box;
}

.eit-app *, .eit-app *::before, .eit-app *::after {
  box-sizing: border-box; margin: 0; padding: 0;
}

/* Grid bg */
.eit-app::before {
  content: ''; position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--eit-border) 1px, transparent 1px),
    linear-gradient(90deg, var(--eit-border) 1px, transparent 1px);
  background-size: 60px 60px; opacity: .3; pointer-events: none;
}

/* Glow */
.eit-app::after {
  content: ''; position: absolute;
  top: -160px; left: 50%; transform: translateX(-50%);
  width: 700px; height: 320px;
  background: radial-gradient(ellipse, rgba(200,169,110,.07) 0%, transparent 70%);
  pointer-events: none;
}

/* ── Loading / Spinner ── */
.eit-spinner-wrap {
  position: relative; z-index: 1;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  padding: 60px 20px;
}

.eit-spinner {
  width: 32px; height: 32px;
  border: 2px solid var(--eit-border);
  border-top-color: var(--eit-accent);
  border-radius: 50%;
  animation: eit-spin .8s linear infinite;
}

@keyframes eit-spin { to { transform: rotate(360deg); } }

.eit-spinner-text {
  margin-top: 14px; font-size: 11px;
  color: var(--eit-muted); letter-spacing: .2em; text-transform: uppercase;
}

/* ── Inner wrap ── */
.eit-inner { position: relative; z-index: 1; max-width: 700px; margin: 0 auto; }

/* ── Header ── */
.eit-header { text-align: center; margin-bottom: 28px; }

.eit-eyebrow {
  display: block; font-size: 10px; letter-spacing: .35em;
  color: var(--eit-accent); text-transform: uppercase; margin-bottom: 10px;
}

.eit-title {
  font-family: var(--eit-serif) !important;
  font-size: clamp(20px, 4vw, 36px) !important;
  font-weight: 700 !important; color: var(--eit-text) !important;
  border: none !important; padding: 0 !important; margin: 0 0 8px !important;
  line-height: 1.2 !important;
}

.eit-title span:first-of-type { color: var(--eit-accent); }

.eit-badge {
  display: inline-block; margin-left: 10px; padding: 2px 10px;
  border: 1px solid var(--eit-muted); border-radius: 20px;
  font-size: 9px; letter-spacing: .2em; color: var(--eit-muted);
  vertical-align: middle; font-family: var(--eit-mono);
}

.eit-badge-pro { border-color: var(--eit-accent); color: var(--eit-accent); }

.eit-sub { font-size: 11px; color: var(--eit-muted); letter-spacing: .08em; }

/* ── Scores ── */
.eit-scores {
  display: flex; justify-content: space-between; align-items: center;
  background: var(--eit-surface); border: 1px solid var(--eit-border);
  border-radius: 4px; padding: 13px 18px; margin-bottom: 12px;
  font-size: 10px; letter-spacing: .12em; color: var(--eit-muted); text-transform: uppercase;
}

.eit-stat { display: flex; flex-direction: column; align-items: center; gap: 3px; }

.eit-v {
  font-size: 20px; font-weight: 700; color: var(--eit-text);
  letter-spacing: -.02em; font-family: var(--eit-mono);
}

.eit-stat.cor .eit-v { color: var(--eit-ok); }
.eit-stat.wrg .eit-v { color: var(--eit-err); }
.eit-stat.stk .eit-v { color: var(--eit-accent); }

/* ── Settings ── */
.eit-settings {
  background: var(--eit-surface); border: 1px solid var(--eit-border);
  border-radius: 4px; padding: 13px 18px; margin-bottom: 12px;
  display: flex; gap: 20px; flex-wrap: wrap; align-items: center;
}

.eit-settings label {
  font-size: 10px !important; letter-spacing: .15em; color: var(--eit-muted) !important;
  text-transform: uppercase; font-weight: normal !important;
}

.eit-settings select {
  margin-left: 7px; background: var(--eit-s2) !important;
  border: 1px solid var(--eit-border) !important; color: var(--eit-text) !important;
  font-family: var(--eit-mono) !important; font-size: 11px !important;
  padding: 4px 8px !important; border-radius: 2px !important;
  outline: none !important; cursor: pointer; box-shadow: none !important; height: auto !important;
}

.eit-settings select:focus { border-color: var(--eit-accent) !important; }

/* ── Card ── */
.eit-card {
  background: var(--eit-surface); border: 1px solid var(--eit-border);
  border-radius: 4px; padding: 22px 20px; margin-bottom: 10px;
}

/* ── Visualiser ── */
.eit-viz-wrap {
  margin-bottom: 18px; border: 1px solid var(--eit-border); border-radius: 2px;
  overflow: hidden; height: 56px; background: var(--eit-s2); position: relative;
}

.eit-viz-wrap canvas { width: 100%; height: 100%; display: block; }

.eit-viz-lbl {
  position: absolute; top: 7px; left: 10px;
  font-size: 8px; letter-spacing: .2em; color: var(--eit-muted);
  text-transform: uppercase; pointer-events: none;
}

/* ── Buttons ── */
.eit-btn {
  height: 46px; background: transparent !important;
  border: 1px solid var(--eit-accent) !important; color: var(--eit-accent) !important;
  font-family: var(--eit-mono) !important; font-size: 11px !important;
  letter-spacing: .14em; text-transform: uppercase; cursor: pointer;
  border-radius: 2px !important; transition: all .15s;
  position: relative; overflow: hidden;
  display: inline-flex !important; align-items: center; justify-content: center;
  box-shadow: none !important; line-height: 1 !important; text-decoration: none !important;
}

.eit-btn::before {
  content: ''; position: absolute; inset: 0;
  background: var(--eit-accent); transform: scaleX(0);
  transform-origin: left; transition: transform .2s; z-index: 0;
}

.eit-btn span { position: relative; z-index: 1; }

.eit-btn:hover:not(:disabled)::before { transform: scaleX(1); }
.eit-btn:hover:not(:disabled) { color: var(--eit-bg) !important; }

.eit-btn.sec  { border-color: var(--eit-accent2) !important; color: var(--eit-accent2) !important; }
.eit-btn.sec::before  { background: var(--eit-accent2); }
.eit-btn.grn  { border-color: var(--eit-ok) !important; color: var(--eit-ok) !important; }
.eit-btn.grn::before  { background: var(--eit-ok); }
.eit-btn.red  { border-color: var(--eit-err) !important; color: var(--eit-err) !important; }
.eit-btn.red::before  { background: var(--eit-err); }

.eit-btn:disabled { opacity: .35 !important; cursor: not-allowed; }
.eit-btn:disabled::before { display: none; }

.eit-btn.going { animation: eit-blink .9s ease infinite alternate; pointer-events: none; }

@keyframes eit-blink {
  from { box-shadow: none; }
  to   { box-shadow: 0 0 14px 3px rgba(200,169,110,.22); }
}

.eit-play-row { display: flex; gap: 10px; margin-bottom: 18px; }
.eit-play-row .eit-btn { flex: 1; }

/* ── Grid ── */
.eit-grid-lbl { font-size: 10px; letter-spacing: .2em; color: var(--eit-muted); text-transform: uppercase; margin-bottom: 9px; }

.eit-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 7px; }

.eit-ibtn {
  height: 54px; background: var(--eit-s2) !important;
  border: 1px solid var(--eit-border) !important; color: var(--eit-text) !important;
  font-family: var(--eit-mono) !important; font-size: 10px !important;
  cursor: pointer; border-radius: 2px !important; transition: all .12s;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 3px; box-shadow: none !important;
}

.eit-ibtn .eit-n { font-size: 13px; font-weight: 700; line-height: 1; }
.eit-ibtn .eit-s { font-size: 8px; color: var(--eit-muted); letter-spacing: .08em; }

.eit-ibtn:hover:not(:disabled) {
  border-color: var(--eit-accent) !important; color: var(--eit-accent) !important;
  background: rgba(200,169,110,.06) !important;
}

.eit-ibtn:disabled { opacity: .3; cursor: not-allowed; }

.eit-ibtn.ok {
  border-color: var(--eit-ok) !important; background: rgba(110,200,160,.12) !important;
  color: var(--eit-ok) !important; animation: eit-fc .35s ease;
}

.eit-ibtn.bad {
  border-color: var(--eit-err) !important; background: rgba(200,110,126,.12) !important;
  color: var(--eit-err) !important; animation: eit-fw .4s ease;
}

@keyframes eit-fc { 0%{transform:scale(1)} 50%{transform:scale(1.05)} 100%{transform:scale(1)} }
@keyframes eit-fw { 0%,20%,40%{transform:translateX(-3px)} 10%,30%{transform:translateX(3px)} 60%{transform:translateX(0)} }

/* ── OK bar ── */
.eit-ok-bar {
  display: none; margin-top: 12px; min-height: 40px;
  align-items: center; justify-content: center; font-size: 11px; letter-spacing: .1em;
  border-radius: 2px; text-transform: uppercase;
  border: 1px solid rgba(110,200,160,.3); background: rgba(110,200,160,.06); color: var(--eit-ok);
}

.eit-ok-bar.show { display: flex; animation: eit-fadein .25s ease; }

@keyframes eit-fadein { from{opacity:0;transform:translateY(5px)} to{opacity:1;transform:translateY(0)} }

/* ── Wrong panel ── */
.eit-wrong-panel {
  display: none; margin-top: 13px;
  border: 1px solid rgba(200,110,126,.4); border-radius: 4px;
  background: rgba(200,110,126,.05); padding: 16px;
}

.eit-wrong-panel.show { display: block; animation: eit-fadein .3s ease; }

.eit-wp-title { font-size: 10px; letter-spacing: .25em; color: var(--eit-err); text-transform: uppercase; margin-bottom: 12px; }

.eit-wp-compare { display: flex; gap: 10px; margin-bottom: 12px; }

.eit-wp-box { flex: 1; border-radius: 3px; padding: 12px 8px; text-align: center; }
.eit-wp-box.your { border: 1px solid rgba(200,110,126,.5); background: rgba(200,110,126,.08); }
.eit-wp-box.ans  { border: 1px solid rgba(110,200,160,.5); background: rgba(110,200,160,.08); }

.eit-lbl { font-size: 9px; letter-spacing: .2em; color: var(--eit-muted); text-transform: uppercase; margin-bottom: 5px; }

.eit-iv-name  { font-size: 15px; font-weight: 700; line-height: 1.3; }
.eit-iv-short { font-size: 10px; color: var(--eit-muted); margin-top: 3px; }

.eit-wp-box.your .eit-iv-name { color: var(--eit-err); }
.eit-wp-box.ans  .eit-iv-name { color: var(--eit-ok); }

.eit-wp-btns { display: flex; gap: 8px; }
.eit-wp-btns .eit-btn { flex: 1; height: 40px; font-size: 10px; letter-spacing: .1em; }

/* ── History ── */
.eit-hist { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 12px; }
.eit-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--eit-border); }
.eit-dot.c { background: var(--eit-ok); }
.eit-dot.w { background: var(--eit-err); }

/* ── Keyboard hint ── */
.eit-hint { font-size: 9px; color: var(--eit-muted); letter-spacing: .12em; text-align: center; margin-top: 10px; }

.eit-hint kbd {
  display: inline-block; background: var(--eit-s2); border: 1px solid var(--eit-border);
  border-radius: 2px; padding: 1px 5px; font-family: var(--eit-mono); font-size: 9px; box-shadow: none;
}

/* ═══════════════════════════════════════════════
   Modal 共用
   ═══════════════════════════════════════════════ */
.eit-modal-overlay {
  display: none; position: fixed; inset: 0;
  background: rgba(0,0,0,.82); z-index: 99999;
  align-items: center; justify-content: center;
}

.eit-modal-overlay.show { display: flex; }

.eit-modal {
  background: var(--eit-surface); border: 1px solid var(--eit-border);
  border-radius: 8px; padding: 36px 28px; max-width: 360px; width: 90%;
  text-align: center; box-shadow: 0 24px 64px rgba(0,0,0,.7); animation: eit-fadein .2s ease;
}

.eit-modal-icon { font-size: 30px; margin-bottom: 12px; }

.eit-modal-title {
  font-family: var(--eit-serif) !important; font-size: 18px !important;
  font-weight: 700 !important; color: var(--eit-accent) !important;
  margin-bottom: 12px !important; border: none !important; padding: 0 !important;
}

.eit-modal-body { font-size: 13px; color: var(--eit-text); line-height: 1.8; margin-bottom: 20px; }

.eit-modal-btn {
  display: inline-block; padding: 11px 24px;
  background: var(--eit-accent2) !important; color: var(--eit-bg) !important;
  font-family: var(--eit-mono) !important; font-size: 11px; letter-spacing: .15em;
  text-transform: uppercase; text-decoration: none !important;
  border-radius: 2px; border: none !important; cursor: pointer; font-weight: 700; transition: opacity .15s;
}

.eit-modal-btn:hover { opacity: .85; }

.eit-modal-close {
  display: block; margin-top: 14px; font-size: 10px; color: var(--eit-muted);
  letter-spacing: .15em; background: none; border: none; cursor: pointer;
  text-transform: uppercase; font-family: var(--eit-mono);
}

.eit-modal-close:hover { color: var(--eit-text); }

/* ═══════════════════════════════════════════════
   結果 Modal
   ═══════════════════════════════════════════════ */
.eit-result-box { max-width: 400px !important; }

.eit-result-stars { font-size: 26px; letter-spacing: 4px; margin-bottom: 10px; }

.eit-result-title {
  font-family: var(--eit-serif); font-size: 20px; font-weight: 700;
  color: var(--eit-accent); margin-bottom: 16px;
}

.eit-result-score-wrap { margin-bottom: 16px; }

.eit-result-score-num {
  font-size: 48px; font-weight: 700; line-height: 1;
  margin-bottom: 12px; font-family: var(--eit-mono);
}

.eit-result-cor   { color: var(--eit-ok); }
.eit-result-slash { color: var(--eit-muted); font-size: 30px; }

.eit-result-bar-track {
  width: 100%; height: 6px; background: var(--eit-border);
  border-radius: 3px; overflow: hidden;
}

.eit-result-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--eit-accent2), var(--eit-ok));
  border-radius: 3px; width: 0%; transition: width .9s ease .3s;
}

.eit-result-msg { font-size: 14px; color: var(--eit-text); line-height: 1.7; margin-bottom: 20px; }

.eit-result-cta {
  background: rgba(126,184,200,.07); border: 1px solid rgba(126,184,200,.25);
  border-radius: 4px; padding: 16px; margin-bottom: 14px;
}

.eit-result-cta-label { font-size: 11px; color: var(--eit-muted); letter-spacing: .1em; margin-bottom: 12px; }

.eit-chord-btn {
  display: inline-block; padding: 11px 20px;
  background: var(--eit-accent2) !important; color: var(--eit-bg) !important;
  font-family: var(--eit-mono) !important; font-size: 11px; letter-spacing: .1em;
  text-transform: uppercase; text-decoration: none !important;
  border-radius: 2px; border: none !important; cursor: pointer; font-weight: 700; transition: opacity .15s;
}

.eit-chord-btn:hover { opacity: .85; }

.eit-result-refresh { font-size: 10px; color: var(--eit-muted); letter-spacing: .12em; }

/* ── RWD ── */
@media (max-width: 480px) {
  .eit-grid    { grid-template-columns: repeat(3, 1fr); }
  .eit-wp-btns { flex-direction: column; }
  .eit-scores  { gap: 8px; flex-wrap: wrap; }
  .eit-settings { gap: 12px; }
}

/* ═══════════════════════════════════════════════════════
   和弦聽力訓練 (ect-app) — 共用 eit-app 變數與基礎樣式
   ═══════════════════════════════════════════════════════ */

.ect-app {
  --eit-bg:      #0d0d0f;
  --eit-surface: #16161a;
  --eit-s2:      #1e1e24;
  --eit-border:  #2a2a35;
  --eit-accent:  #c8a96e;
  --eit-accent2: #7eb8c8;
  --eit-text:    #e8e4dc;
  --eit-muted:   #6b6870;
  --eit-ok:      #6ec8a0;
  --eit-err:     #c86e7e;
  --eit-mono:    'Courier New', Courier, monospace;
  --eit-serif:   Georgia, 'Times New Roman', serif;

  background: var(--eit-bg);
  color: var(--eit-text);
  font-family: var(--eit-mono);
  padding: 36px 16px 52px;
  border-radius: 8px;
  position: relative;
  overflow: hidden;
  box-sizing: border-box;
}

.ect-app *, .ect-app *::before, .ect-app *::after {
  box-sizing: border-box; margin: 0; padding: 0;
}

.ect-app::before {
  content: ''; position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--eit-border) 1px, transparent 1px),
    linear-gradient(90deg, var(--eit-border) 1px, transparent 1px);
  background-size: 60px 60px; opacity: .3; pointer-events: none;
}

.ect-app::after {
  content: ''; position: absolute;
  top: -160px; left: 50%; transform: translateX(-50%);
  width: 700px; height: 320px;
  background: radial-gradient(ellipse, rgba(126,184,200,.07) 0%, transparent 70%);
  pointer-events: none;
}

/* accent 顏色改為 accent2（藍色調，區分音程/和弦） */
.ect-app { --eit-accent: #7eb8c8; }

.ect-inner { position: relative; z-index: 1; max-width: 700px; margin: 0 auto; }

/* Header 沿用 eit-header 樣式 */
.ect-app .eit-header { text-align: center; margin-bottom: 28px; }
.ect-app .eit-eyebrow { display:block; font-size:10px; letter-spacing:.35em; color:var(--eit-accent); text-transform:uppercase; margin-bottom:10px; }
.ect-app .eit-title { font-family:var(--eit-serif)!important; font-size:clamp(20px,4vw,36px)!important; font-weight:700!important; color:var(--eit-text)!important; border:none!important; padding:0!important; margin:0 0 8px!important; line-height:1.2!important; }
.ect-app .eit-title span:first-of-type { color:var(--eit-accent); }
.ect-app .eit-badge { display:inline-block; margin-left:10px; padding:2px 10px; border:1px solid var(--eit-muted); border-radius:20px; font-size:9px; letter-spacing:.2em; color:var(--eit-muted); vertical-align:middle; font-family:var(--eit-mono); }
.ect-app .eit-badge-pro { border-color:var(--eit-accent); color:var(--eit-accent); }
.ect-app .eit-sub { font-size:11px; color:var(--eit-muted); letter-spacing:.08em; }

/* Scores */
.ect-app .eit-scores { display:flex; justify-content:space-between; align-items:center; background:var(--eit-surface); border:1px solid var(--eit-border); border-radius:4px; padding:13px 18px; margin-bottom:12px; font-size:10px; letter-spacing:.12em; color:var(--eit-muted); text-transform:uppercase; }
.ect-app .eit-stat { display:flex; flex-direction:column; align-items:center; gap:3px; }
.ect-app .eit-v { font-size:20px; font-weight:700; color:var(--eit-text); letter-spacing:-.02em; font-family:var(--eit-mono); }
.ect-app .eit-stat.cor .eit-v { color:var(--eit-ok); }
.ect-app .eit-stat.wrg .eit-v { color:var(--eit-err); }
.ect-app .eit-stat.stk .eit-v { color:var(--eit-accent); }

/* Settings */
.ect-app .eit-settings { background:var(--eit-surface); border:1px solid var(--eit-border); border-radius:4px; padding:13px 18px; margin-bottom:12px; display:flex; gap:16px; flex-wrap:wrap; align-items:flex-start; }
.ect-app .eit-settings label { font-size:10px!important; letter-spacing:.15em; color:var(--eit-muted)!important; text-transform:uppercase; font-weight:normal!important; }
.ect-app .eit-settings select { margin-left:7px; background:var(--eit-s2)!important; border:1px solid var(--eit-border)!important; color:var(--eit-text)!important; font-family:var(--eit-mono)!important; font-size:11px!important; padding:4px 8px!important; border-radius:2px!important; outline:none!important; cursor:pointer; box-shadow:none!important; }
.ect-app .eit-settings select:focus { border-color:var(--eit-accent)!important; }

/* 轉位選擇 checkbox 群組 */
.ect-inversion-group { display:flex; flex-direction:column; gap:4px; }
.ect-inversion-group .ect-inv-label { font-size:10px; letter-spacing:.15em; color:var(--eit-muted); text-transform:uppercase; margin-bottom:4px; display:block; }
.ect-inv-checks { display:flex; gap:10px; flex-wrap:wrap; }
.ect-inv-checks label { display:flex; align-items:center; gap:5px; font-size:11px; color:var(--eit-text); cursor:pointer; }
.ect-inv-checks input[type=checkbox] { width:14px; height:14px; accent-color:var(--eit-accent); cursor:pointer; }
.ect-inv-checks label.locked { color:var(--eit-muted); cursor:default; }
.ect-inv-checks label.locked input { cursor:not-allowed; }

/* Card */
.ect-app .eit-card { background:var(--eit-surface); border:1px solid var(--eit-border); border-radius:4px; padding:22px 20px; margin-bottom:10px; }

/* Viz */
.ect-app .eit-viz-wrap { margin-bottom:18px; border:1px solid var(--eit-border); border-radius:2px; overflow:hidden; height:56px; background:var(--eit-s2); position:relative; }
.ect-app .eit-viz-wrap canvas { width:100%; height:100%; display:block; }
.ect-app .eit-viz-lbl { position:absolute; top:7px; left:10px; font-size:8px; letter-spacing:.2em; color:var(--eit-muted); text-transform:uppercase; pointer-events:none; }

/* Buttons — 和弦版 accent 為 accent2 */
.ect-app .eit-btn { height:46px; background:transparent!important; border:1px solid var(--eit-accent)!important; color:var(--eit-accent)!important; font-family:var(--eit-mono)!important; font-size:11px!important; letter-spacing:.14em; text-transform:uppercase; cursor:pointer; border-radius:2px!important; transition:all .15s; position:relative; overflow:hidden; display:inline-flex!important; align-items:center; justify-content:center; box-shadow:none!important; line-height:1!important; text-decoration:none!important; }
.ect-app .eit-btn::before { content:''; position:absolute; inset:0; background:var(--eit-accent); transform:scaleX(0); transform-origin:left; transition:transform .2s; z-index:0; }
.ect-app .eit-btn span { position:relative; z-index:1; }
.ect-app .eit-btn:hover:not(:disabled)::before { transform:scaleX(1); }
.ect-app .eit-btn:hover:not(:disabled) { color:var(--eit-bg)!important; }
.ect-app .eit-btn.sec { border-color:var(--eit-accent2)!important; color:var(--eit-accent2)!important; }
.ect-app .eit-btn.sec::before { background:var(--eit-accent2); }
.ect-app .eit-btn.grn { border-color:var(--eit-ok)!important; color:var(--eit-ok)!important; }
.ect-app .eit-btn.grn::before { background:var(--eit-ok); }
.ect-app .eit-btn.red { border-color:var(--eit-err)!important; color:var(--eit-err)!important; }
.ect-app .eit-btn.red::before { background:var(--eit-err); }
.ect-app .eit-btn:disabled { opacity:.35!important; cursor:not-allowed; }
.ect-app .eit-btn:disabled::before { display:none; }
.ect-app .eit-btn.going { animation:eit-blink .9s ease infinite alternate; pointer-events:none; }

.ect-app .eit-play-row { display:flex; gap:10px; margin-bottom:18px; }
.ect-app .eit-play-row .eit-btn { flex:1; }

/* 和弦答案格 — 較大按鈕，4 或 3 欄 */
.ect-grid-lbl { font-size:10px; letter-spacing:.2em; color:var(--eit-muted); text-transform:uppercase; margin-bottom:9px; }

.ect-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}

.ect-ibtn {
  min-height: 60px;
  padding: 8px 6px;
  background: var(--eit-s2)!important;
  border: 1px solid var(--eit-border)!important;
  color: var(--eit-text)!important;
  font-family: var(--eit-mono)!important;
  font-size: 10px!important;
  cursor: pointer;
  border-radius: 2px!important;
  transition: all .12s;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  box-shadow: none!important;
  text-align: center;
  line-height: 1.3;
}

.ect-ibtn .ect-cn  { font-size:13px; font-weight:700; line-height:1; }
.ect-ibtn .ect-cs  { font-size:9px; color:var(--eit-muted); letter-spacing:.06em; margin-top:2px; }

.ect-ibtn:hover:not(:disabled) { border-color:var(--eit-accent)!important; color:var(--eit-accent)!important; background:rgba(126,184,200,.06)!important; }
.ect-ibtn:disabled { opacity:.3; cursor:not-allowed; }
.ect-ibtn.ok  { border-color:var(--eit-ok)!important;  background:rgba(110,200,160,.12)!important; color:var(--eit-ok)!important;  animation:eit-fc .35s ease; }
.ect-ibtn.bad { border-color:var(--eit-err)!important; background:rgba(200,110,126,.12)!important; color:var(--eit-err)!important; animation:eit-fw .4s ease; }

/* OK bar & Wrong panel — 沿用 eit 樣式 */
.ect-app .eit-ok-bar { display:none; margin-top:12px; min-height:40px; align-items:center; justify-content:center; font-size:11px; letter-spacing:.1em; border-radius:2px; text-transform:uppercase; border:1px solid rgba(110,200,160,.3); background:rgba(110,200,160,.06); color:var(--eit-ok); }
.ect-app .eit-ok-bar.show { display:flex; animation:eit-fadein .25s ease; }

.ect-app .eit-wrong-panel { display:none; margin-top:13px; border:1px solid rgba(200,110,126,.4); border-radius:4px; background:rgba(200,110,126,.05); padding:16px; }
.ect-app .eit-wrong-panel.show { display:block; animation:eit-fadein .3s ease; }
.ect-app .eit-wp-compare { display:flex; gap:10px; margin-bottom:12px; }
.ect-app .eit-wp-box { flex:1; border-radius:3px; padding:12px 8px; text-align:center; }
.ect-app .eit-wp-box.your { border:1px solid rgba(200,110,126,.5); background:rgba(200,110,126,.08); }
.ect-app .eit-wp-box.ans  { border:1px solid rgba(110,200,160,.5);  background:rgba(110,200,160,.08); }
.ect-app .eit-lbl { font-size:9px; letter-spacing:.2em; color:var(--eit-muted); text-transform:uppercase; margin-bottom:5px; }
.ect-app .eit-iv-name  { font-size:14px; font-weight:700; line-height:1.3; }
.ect-app .eit-iv-short { font-size:10px; color:var(--eit-muted); margin-top:3px; }
.ect-app .eit-wp-box.your .eit-iv-name { color:var(--eit-err); }
.ect-app .eit-wp-box.ans  .eit-iv-name { color:var(--eit-ok); }
.ect-app .eit-wp-btns { display:flex; gap:8px; }
.ect-app .eit-wp-btns .eit-btn { flex:1; height:40px; font-size:10px; letter-spacing:.1em; }

/* History dots */
.ect-app .eit-hist { display:flex; gap:6px; flex-wrap:wrap; margin-top:12px; }
.ect-app .eit-dot { width:10px; height:10px; border-radius:50%; background:var(--eit-border); }
.ect-app .eit-dot.c { background:var(--eit-ok); }
.ect-app .eit-dot.w { background:var(--eit-err); }

/* Modals（沿用共用樣式） */
.ect-app .eit-modal-overlay { display:none; position:fixed; inset:0; background:rgba(0,0,0,.82); z-index:99999; align-items:center; justify-content:center; }
.ect-app .eit-modal-overlay.show { display:flex; }
.ect-app .eit-modal { background:var(--eit-surface); border:1px solid var(--eit-border); border-radius:8px; padding:36px 28px; max-width:380px; width:90%; text-align:center; box-shadow:0 24px 64px rgba(0,0,0,.7); animation:eit-fadein .2s ease; }
.ect-app .eit-modal-icon { font-size:30px; margin-bottom:12px; }
.ect-app .eit-modal-title { font-family:var(--eit-serif)!important; font-size:18px!important; font-weight:700!important; color:var(--eit-accent)!important; margin-bottom:12px!important; border:none!important; padding:0!important; }
.ect-app .eit-modal-body { font-size:13px; color:var(--eit-text); line-height:1.8; margin-bottom:20px; }
.ect-app .eit-modal-btn { display:inline-block; padding:11px 24px; background:var(--eit-accent)!important; color:var(--eit-bg)!important; font-family:var(--eit-mono)!important; font-size:11px; letter-spacing:.15em; text-transform:uppercase; text-decoration:none!important; border-radius:2px; border:none!important; cursor:pointer; font-weight:700; transition:opacity .15s; }
.ect-app .eit-modal-btn:hover { opacity:.85; }
.ect-app .eit-modal-close { display:block; margin-top:14px; font-size:10px; color:var(--eit-muted); letter-spacing:.15em; background:none; border:none; cursor:pointer; text-transform:uppercase; font-family:var(--eit-mono); }
.ect-app .eit-modal-close:hover { color:var(--eit-text); }

/* 結果 Modal */
.ect-app .eit-result-box { max-width:420px!important; }
.ect-app .eit-result-stars { font-size:26px; letter-spacing:4px; margin-bottom:10px; }
.ect-app .eit-result-title { font-family:var(--eit-serif); font-size:20px; font-weight:700; color:var(--eit-accent); margin-bottom:16px; }
.ect-app .eit-result-score-wrap { margin-bottom:16px; }
.ect-app .eit-result-score-num { font-size:48px; font-weight:700; line-height:1; margin-bottom:12px; font-family:var(--eit-mono); }
.ect-app .eit-result-cor { color:var(--eit-ok); }
.ect-app .eit-result-slash { color:var(--eit-muted); font-size:30px; }
.ect-app .eit-result-bar-track { width:100%; height:6px; background:var(--eit-border); border-radius:3px; overflow:hidden; }
.ect-app .eit-result-bar-fill { height:100%; background:linear-gradient(90deg,var(--eit-accent2),var(--eit-ok)); border-radius:3px; width:0%; transition:width .9s ease .3s; }
.ect-app .eit-result-msg { font-size:14px; color:var(--eit-text); line-height:1.7; margin-bottom:20px; }
.ect-app .eit-result-cta { background:rgba(126,184,200,.07); border:1px solid rgba(126,184,200,.25); border-radius:4px; padding:16px; margin-bottom:14px; }
.ect-app .eit-result-cta-label { font-size:11px; color:var(--eit-muted); letter-spacing:.1em; margin-bottom:12px; }
.ect-app .eit-unlock-btn { display:inline-block; padding:12px 22px; background:var(--eit-accent)!important; color:var(--eit-bg)!important; font-family:var(--eit-mono)!important; font-size:11px; letter-spacing:.12em; text-transform:uppercase; text-decoration:none!important; border-radius:2px; border:none!important; cursor:pointer; font-weight:700; transition:opacity .15s; }
.ect-app .eit-unlock-btn:hover { opacity:.85; }
.ect-app .eit-result-refresh { font-size:10px; color:var(--eit-muted); letter-spacing:.12em; }

/* RWD */
@media (max-width:520px) {
  .ect-grid { grid-template-columns:repeat(3,1fr); }
  .ect-app .eit-wp-btns { flex-direction:column; }
  .ect-app .eit-scores  { gap:8px; flex-wrap:wrap; }
}

/* 轉位答案格 */
.ect-inv-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 7px;
  margin-top: 0;
}

.ect-inv-ibtn {
  height: 52px;
  background: var(--eit-s2) !important;
  border: 1px solid var(--eit-border) !important;
  color: var(--eit-text) !important;
  font-family: var(--eit-mono) !important;
  font-size: 11px !important;
  cursor: pointer;
  border-radius: 2px !important;
  transition: all .12s;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  box-shadow: none !important;
}

.ect-inv-ibtn .ect-inv-n { font-size: 12px; font-weight: 700; line-height: 1; }
.ect-inv-ibtn .ect-inv-s { font-size: 9px; color: var(--eit-muted); letter-spacing: .06em; }

.ect-inv-ibtn:hover:not(:disabled) {
  border-color: var(--eit-accent) !important;
  color: var(--eit-accent) !important;
  background: rgba(126,184,200,.06) !important;
}

.ect-inv-ibtn:disabled { opacity: .3; cursor: not-allowed; }
.ect-inv-ibtn.ok  { border-color: var(--eit-ok)  !important; background: rgba(110,200,160,.12) !important; color: var(--eit-ok)  !important; animation: eit-fc .35s ease; }
.ect-inv-ibtn.bad { border-color: var(--eit-err) !important; background: rgba(200,110,126,.12) !important; color: var(--eit-err) !important; animation: eit-fw .4s ease; }

/* step2 進場動畫 */
.ect-step2 { animation: eit-fadein .25s ease; }

/* wrong panel 兩行顯示（和弦＋轉位） */
.ect-wp-sub { font-size: 10px; color: var(--eit-muted); margin-top: 3px; }

@media (max-width: 420px) {
  .ect-inv-grid { grid-template-columns: repeat(2, 1fr); }
}

/* 步驟一已選，等待步驟二 */
.ect-ibtn.sec-picked {
  border-color: var(--eit-accent2) !important;
  background: rgba(126,184,200,.10) !important;
  color: var(--eit-accent2) !important;
}

/* ── 和弦 Checkbox 自訂選擇（PRO 版） ── */
.ect-chord-picker {
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 100%;
}

.ect-chord-picker > .ect-inv-label {
  font-size: 10px;
  letter-spacing: .15em;
  color: var(--eit-muted);
  text-transform: uppercase;
}

.ect-picker-hint {
  font-size: 9px;
  letter-spacing: .05em;
  color: var(--eit-muted);
  margin-left: 6px;
  text-transform: none;
  transition: color .3s;
}

.ect-chord-checks {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.ect-chord-group {
  display: flex;
  flex-direction: column;
  gap: 5px;
  min-width: 140px;
}

.ect-chord-group-label {
  font-size: 9px;
  letter-spacing: .18em;
  color: var(--eit-accent);
  text-transform: uppercase;
  padding-bottom: 3px;
  border-bottom: 1px solid var(--eit-border);
  margin-bottom: 2px;
}

.ect-chord-checks label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  color: var(--eit-text);
  cursor: pointer;
  transition: color .12s;
  white-space: nowrap;
}

.ect-chord-checks label:hover { color: var(--eit-accent); }

.ect-chord-checks label span {
  font-size: 9px;
  color: var(--eit-muted);
  margin-left: 2px;
}

.ect-chord-checks input[type=checkbox] {
  width: 13px;
  height: 13px;
  accent-color: var(--eit-accent);
  cursor: pointer;
  flex-shrink: 0;
}

/* 快速選擇按鈕 */
.ect-picker-actions {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.ect-picker-actions button {
  padding: 3px 10px;
  background: transparent;
  border: 1px solid var(--eit-border);
  color: var(--eit-muted);
  font-family: var(--eit-mono);
  font-size: 9px;
  letter-spacing: .1em;
  cursor: pointer;
  border-radius: 2px;
  text-transform: uppercase;
  transition: all .15s;
}

.ect-picker-actions button:hover {
  border-color: var(--eit-accent);
  color: var(--eit-accent);
}

@media (max-width: 520px) {
  .ect-chord-checks { flex-direction: column; }
}

/* ── 音程 Checkbox 自訂選擇（PRO 版 interval） ── */
.eit-iv-picker {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.eit-iv-picker-label {
  font-size: 10px;
  letter-spacing: .15em;
  color: var(--eit-muted);
  text-transform: uppercase;
}

.eit-iv-picker-hint {
  font-size: 9px;
  letter-spacing: .05em;
  color: var(--eit-muted);
  margin-left: 5px;
  text-transform: none;
  transition: color .3s;
}

.eit-iv-checks {
  display: grid;
  grid-template-columns: repeat(3, auto);
  gap: 4px 14px;
  width: fit-content;
}

.eit-iv-checks label {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 11px;
  color: var(--eit-text);
  cursor: pointer;
  white-space: nowrap;
  transition: color .12s;
}

.eit-iv-checks label:hover { color: var(--eit-accent); }

.eit-iv-checks label span {
  font-size: 9px;
  color: var(--eit-muted);
}

.eit-iv-checks input[type=checkbox] {
  width: 13px;
  height: 13px;
  accent-color: var(--eit-accent);
  cursor: pointer;
  flex-shrink: 0;
}

.eit-iv-actions {
  display: flex;
  gap: 6px;
}

.eit-iv-actions button {
  padding: 3px 10px;
  background: transparent;
  border: 1px solid var(--eit-border);
  color: var(--eit-muted);
  font-family: var(--eit-mono);
  font-size: 9px;
  letter-spacing: .1em;
  cursor: pointer;
  border-radius: 2px;
  text-transform: uppercase;
  transition: all .15s;
}

.eit-iv-actions button:hover {
  border-color: var(--eit-accent);
  color: var(--eit-accent);
}

@media (max-width: 480px) {
  .eit-iv-checks { grid-template-columns: repeat(2, auto); }
}

/* ═══════════════════════════════════════════════════════
   和弦進行聽力 (ecp-app)
   ═══════════════════════════════════════════════════════ */

.ecp-app {
  --eit-bg:      #0d0d0f;
  --eit-surface: #16161a;
  --eit-s2:      #1e1e24;
  --eit-border:  #2a2a35;
  --eit-accent:  #a87ec8;   /* 紫色調區分和弦進行 */
  --eit-accent2: #7eb8c8;
  --eit-text:    #e8e4dc;
  --eit-muted:   #6b6870;
  --eit-ok:      #6ec8a0;
  --eit-err:     #c86e7e;
  --eit-mono:    'Courier New', Courier, monospace;
  --eit-serif:   Georgia, 'Times New Roman', serif;

  background: var(--eit-bg);
  color: var(--eit-text);
  font-family: var(--eit-mono);
  padding: 36px 16px 52px;
  border-radius: 8px;
  position: relative;
  overflow: hidden;
  box-sizing: border-box;
}

.ecp-app *, .ecp-app *::before, .ecp-app *::after {
  box-sizing: border-box; margin: 0; padding: 0;
}

.ecp-app::before {
  content: ''; position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--eit-border) 1px, transparent 1px),
    linear-gradient(90deg, var(--eit-border) 1px, transparent 1px);
  background-size: 60px 60px; opacity: .3; pointer-events: none;
}

.ecp-app::after {
  content: ''; position: absolute;
  top: -160px; left: 50%; transform: translateX(-50%);
  width: 700px; height: 320px;
  background: radial-gradient(ellipse, rgba(168,126,200,.07) 0%, transparent 70%);
  pointer-events: none;
}

.ecp-inner { position: relative; z-index: 1; max-width: 720px; margin: 0 auto; }

/* 沿用 eit-header / eit-scores / eit-settings */
.ecp-app .eit-header  { text-align: center; margin-bottom: 28px; }
.ecp-app .eit-eyebrow { display:block; font-size:10px; letter-spacing:.35em; color:var(--eit-accent); text-transform:uppercase; margin-bottom:10px; }
.ecp-app .eit-title   { font-family:var(--eit-serif)!important; font-size:clamp(20px,4vw,36px)!important; font-weight:700!important; color:var(--eit-text)!important; border:none!important; padding:0!important; margin:0 0 8px!important; line-height:1.2!important; }
.ecp-app .eit-title span:first-of-type { color:var(--eit-accent); }
.ecp-app .eit-badge   { display:inline-block; margin-left:10px; padding:2px 10px; border:1px solid var(--eit-muted); border-radius:20px; font-size:9px; letter-spacing:.2em; color:var(--eit-muted); vertical-align:middle; }
.ecp-app .eit-badge-pro { border-color:var(--eit-accent); color:var(--eit-accent); }
.ecp-app .eit-sub     { font-size:11px; color:var(--eit-muted); letter-spacing:.08em; }

.ecp-app .eit-scores  { display:flex; justify-content:space-between; align-items:center; background:var(--eit-surface); border:1px solid var(--eit-border); border-radius:4px; padding:13px 18px; margin-bottom:12px; font-size:10px; letter-spacing:.12em; color:var(--eit-muted); text-transform:uppercase; }
.ecp-app .eit-stat    { display:flex; flex-direction:column; align-items:center; gap:3px; }
.ecp-app .eit-v       { font-size:20px; font-weight:700; color:var(--eit-text); letter-spacing:-.02em; font-family:var(--eit-mono); }
.ecp-app .eit-stat.cor .eit-v { color:var(--eit-ok); }
.ecp-app .eit-stat.wrg .eit-v { color:var(--eit-err); }
.ecp-app .eit-stat.stk .eit-v { color:var(--eit-accent); }

/* Settings */
.ecp-settings { background:var(--eit-surface); border:1px solid var(--eit-border); border-radius:4px; padding:13px 18px; margin-bottom:12px; display:flex; gap:18px; flex-wrap:wrap; align-items:center; }
.ecp-settings label { font-size:10px!important; letter-spacing:.15em; color:var(--eit-muted)!important; text-transform:uppercase; font-weight:normal!important; }
.ecp-settings select { margin-left:7px; background:var(--eit-s2)!important; border:1px solid var(--eit-border)!important; color:var(--eit-text)!important; font-family:var(--eit-mono)!important; font-size:11px!important; padding:4px 8px!important; border-radius:2px!important; outline:none!important; cursor:pointer; box-shadow:none!important; }
.ecp-settings select:focus { border-color:var(--eit-accent)!important; }

/* Card */
.ecp-card { background:var(--eit-surface); border:1px solid var(--eit-border); border-radius:4px; padding:22px 20px; }

/* Viz */
.ecp-app .eit-viz-wrap { margin-bottom:18px; border:1px solid var(--eit-border); border-radius:2px; overflow:hidden; height:56px; background:var(--eit-s2); position:relative; }
.ecp-app .eit-viz-wrap canvas { width:100%; height:100%; display:block; }
.ecp-app .eit-viz-lbl { position:absolute; top:7px; left:10px; font-size:8px; letter-spacing:.2em; color:var(--eit-muted); text-transform:uppercase; pointer-events:none; }

/* Buttons */
.ecp-app .eit-btn { height:46px; background:transparent!important; border:1px solid var(--eit-accent)!important; color:var(--eit-accent)!important; font-family:var(--eit-mono)!important; font-size:11px!important; letter-spacing:.14em; text-transform:uppercase; cursor:pointer; border-radius:2px!important; transition:all .15s; position:relative; overflow:hidden; display:inline-flex!important; align-items:center; justify-content:center; box-shadow:none!important; line-height:1!important; text-decoration:none!important; }
.ecp-app .eit-btn::before { content:''; position:absolute; inset:0; background:var(--eit-accent); transform:scaleX(0); transform-origin:left; transition:transform .2s; z-index:0; }
.ecp-app .eit-btn span { position:relative; z-index:1; }
.ecp-app .eit-btn:hover:not(:disabled)::before { transform:scaleX(1); }
.ecp-app .eit-btn:hover:not(:disabled) { color:var(--eit-bg)!important; }
.ecp-app .eit-btn.sec { border-color:var(--eit-accent2)!important; color:var(--eit-accent2)!important; }
.ecp-app .eit-btn.sec::before { background:var(--eit-accent2); }
.ecp-app .eit-btn:disabled { opacity:.35!important; cursor:not-allowed; }
.ecp-app .eit-btn:disabled::before { display:none; }
.ecp-app .eit-btn.going { animation:eit-blink .9s ease infinite alternate; pointer-events:none; }

.ecp-app .eit-play-row { display:flex; gap:10px; margin-bottom:20px; }
.ecp-app .eit-play-row .eit-btn { flex:1; }

/* ── 進行槽 ── */
.ecp-slots-label {
  font-size:10px; letter-spacing:.2em; color:var(--eit-muted);
  text-transform:uppercase; margin-bottom:12px;
}

.ecp-slots {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

.ecp-slot {
  flex: 1;
  min-width: 80px;
  max-width: 140px;
  height: 80px;
  border: 2px dashed var(--eit-border);
  border-radius: 4px;
  background: var(--eit-s2);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all .15s;
  position: relative;
  gap: 4px;
}

.ecp-slot-num {
  font-size: 9px;
  color: var(--eit-muted);
  letter-spacing: .15em;
  text-transform: uppercase;
  position: absolute;
  top: 6px; left: 8px;
}

.ecp-slot-val {
  font-size: 20px;
  font-weight: 700;
  font-family: var(--eit-serif);
  color: var(--eit-muted);
  line-height: 1;
}

.ecp-slot-empty:hover {
  border-color: var(--eit-accent);
  background: rgba(168,126,200,.06);
}

.ecp-slot-active {
  border-color: var(--eit-accent) !important;
  border-style: solid !important;
  background: rgba(168,126,200,.10) !important;
}

.ecp-slot-filled {
  border-style: solid;
  border-color: var(--eit-accent2);
  background: rgba(126,184,200,.08);
}

.ecp-slot-filled .ecp-slot-val {
  color: var(--eit-accent2);
}

.ecp-slot-ok {
  border-style: solid !important;
  border-color: var(--eit-ok) !important;
  background: rgba(110,200,160,.12) !important;
}
.ecp-slot-ok .ecp-slot-val { color: var(--eit-ok) !important; }

.ecp-slot-bad {
  border-style: solid !important;
  border-color: var(--eit-err) !important;
  background: rgba(200,110,126,.12) !important;
}
.ecp-slot-bad .ecp-slot-val { color: var(--eit-err) !important; font-size:14px; }

.ecp-arrow {
  color: var(--eit-muted);
  font-size: 18px;
  flex-shrink: 0;
  user-select: none;
}

/* ── 和弦選擇器（Picker）── */
.ecp-picker {
  background: var(--eit-s2);
  border: 1px solid var(--eit-border);
  border-radius: 4px;
  padding: 16px;
  margin-bottom: 14px;
  animation: eit-fadein .2s ease;
}

.ecp-picker-label {
  font-size: 10px;
  letter-spacing: .2em;
  color: var(--eit-accent);
  text-transform: uppercase;
  margin-bottom: 12px;
}

.ecp-picker-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 7px;
}

.ecp-pick-btn {
  height: 60px;
  background: var(--eit-surface) !important;
  border: 1px solid var(--eit-border) !important;
  color: var(--eit-text) !important;
  font-family: var(--eit-mono) !important;
  cursor: pointer;
  border-radius: 2px !important;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  transition: all .12s;
  box-shadow: none !important;
}

.ecp-pick-roman {
  font-size: 16px;
  font-weight: 700;
  font-family: var(--eit-serif);
  line-height: 1;
  color: var(--eit-text);
}

.ecp-pick-name {
  font-size: 8px;
  color: var(--eit-muted);
  letter-spacing: .06em;
}

.ecp-pick-btn:hover {
  border-color: var(--eit-accent) !important;
  background: rgba(168,126,200,.08) !important;
}

.ecp-pick-btn:hover .ecp-pick-roman { color: var(--eit-accent); }

.ecp-pick-btn.selected {
  border-color: var(--eit-accent2) !important;
  background: rgba(126,184,200,.12) !important;
}
.ecp-pick-btn.selected .ecp-pick-roman { color: var(--eit-accent2); }

/* ── 提交按鈕 ── */
.ecp-submit-wrap { margin-bottom: 14px; }
.ecp-submit-wrap .eit-btn { width: 100%; }

/* ── 結果面板 ── */
.ecp-result-panel {
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 14px;
  animation: eit-fadein .3s ease;
}

.ecp-result-header {
  padding: 12px 16px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.ecp-result-header.ok  { background: rgba(110,200,160,.15); color: var(--eit-ok);  border-bottom: 1px solid rgba(110,200,160,.3); }
.ecp-result-header.bad { background: rgba(200,110,126,.15); color: var(--eit-err); border-bottom: 1px solid rgba(200,110,126,.3); }

.ecp-result-body { background: var(--eit-s2); padding: 14px 16px; border: 1px solid var(--eit-border); border-top: none; }

.ecp-result-key {
  font-size: 11px;
  color: var(--eit-muted);
  letter-spacing: .08em;
  margin-bottom: 12px;
}

/* 比對列 */
.ecp-result-compare {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

.ecp-result-item {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 3px;
  font-family: var(--eit-serif);
  font-size: 14px;
}

.ecp-result-item.ok  { background: rgba(110,200,160,.10); border: 1px solid rgba(110,200,160,.3); }
.ecp-result-item.bad { background: rgba(200,110,126,.10); border: 1px solid rgba(200,110,126,.3); }

.ecp-result-num    { font-size:9px; color:var(--eit-muted); font-family:var(--eit-mono); margin-right:2px; }
.ecp-result-yours  { font-weight:700; color:var(--eit-err); }
.ecp-result-arrow  { color:var(--eit-muted); font-size:11px; }
.ecp-result-correct{ font-weight:700; color:var(--eit-ok); }
.ecp-result-item.ok .ecp-result-yours  { color:var(--eit-ok); }
.ecp-result-item.ok .ecp-result-arrow  { color:var(--eit-ok); }

/* 和弦音名解析 */
.ecp-result-detail {
  border-top: 1px solid var(--eit-border);
  padding-top: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.ecp-result-chord-info {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  padding: 8px 12px;
  background: var(--eit-surface);
  border: 1px solid var(--eit-border);
  border-radius: 3px;
  min-width: 80px;
}

.ecp-ri-roman { font-size:16px; font-weight:700; font-family:var(--eit-serif); color:var(--eit-accent); }
.ecp-ri-name  { font-size:9px; color:var(--eit-muted); letter-spacing:.06em; text-align:center; }
.ecp-ri-notes { font-size:10px; color:var(--eit-text); letter-spacing:.04em; }

/* ── 下一題按鈕 ── */
.ecp-next-wrap .eit-btn { width:100%; }

/* ── History ── */
.ecp-hist { display:flex; gap:6px; flex-wrap:wrap; margin-top:12px; }

/* RWD */
@media (max-width: 520px) {
  .ecp-picker-grid { grid-template-columns: repeat(3,1fr); }
  .ecp-slot { min-width: 60px; height: 70px; }
  .ecp-slot-val { font-size: 16px; }
  .ecp-result-compare { gap: 6px; }
}

/* ── Picker 分群標題 ── */
.ecp-picker-group-label {
  font-size: 9px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--eit-muted);
  padding: 8px 0 5px;
  border-bottom: 1px solid var(--eit-border);
  margin-bottom: 6px;
  margin-top: 10px;
}

.ecp-picker-group-label:first-child { margin-top: 0; }

.ecp-picker-group-label[data-tag="SD"] { color: #c8a96e; }
.ecp-picker-group-label[data-tag="MI"] { color: #7eb8c8; }

.ecp-picker-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
  margin-bottom: 6px;
}

/* Picker 按鈕上的 tag 標籤 */
.ecp-pick-tag {
  display: inline-block;
  font-size: 7px;
  letter-spacing: .1em;
  padding: 1px 5px;
  border-radius: 2px;
  font-family: var(--eit-mono);
  margin-top: 2px;
  line-height: 1.4;
}

.ecp-pick-tag-sd { background: rgba(200,169,110,.2); color: #c8a96e; }
.ecp-pick-tag-mi { background: rgba(126,184,200,.2); color: #7eb8c8; }

/* 結果面板中的 tag */
.ecp-tag {
  display: inline-block;
  font-size: 9px;
  letter-spacing: .08em;
  padding: 2px 7px;
  border-radius: 2px;
  font-family: var(--eit-mono);
  vertical-align: middle;
  margin-left: 6px;
}

.ecp-tag-sd { background: rgba(200,169,110,.2); color: #c8a96e; border: 1px solid rgba(200,169,110,.4); }
.ecp-tag-mi { background: rgba(126,184,200,.2); color: #7eb8c8; border: 1px solid rgba(126,184,200,.4); }

.ecp-tag-small {
  display: inline-block;
  font-size: 7px;
  letter-spacing: .08em;
  padding: 1px 5px;
  border-radius: 2px;
  font-family: var(--eit-mono);
  vertical-align: middle;
  margin-left: 4px;
}

.ecp-tag-small.ecp-tag-sd { background: rgba(200,169,110,.15); color: #c8a96e; }
.ecp-tag-small.ecp-tag-mi { background: rgba(126,184,200,.15); color: #7eb8c8; }

@media (max-width: 520px) {
  .ecp-picker-row { grid-template-columns: repeat(3, 1fr); }
}

/* ── 調性多選 Checkbox 面板 ── */
.ecp-key-picker {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.ecp-key-picker-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

.ecp-key-picker-label {
  font-size: 10px;
  letter-spacing: .15em;
  color: var(--eit-muted);
  text-transform: uppercase;
}

.ecp-key-hint {
  font-size: 9px;
  letter-spacing: .05em;
  color: var(--eit-accent);
  text-transform: none;
  margin-left: 5px;
}

.ecp-key-actions {
  display: flex;
  gap: 5px;
  flex-wrap: wrap;
}

.ecp-key-btn {
  padding: 3px 9px;
  background: transparent;
  border: 1px solid var(--eit-border);
  color: var(--eit-muted);
  font-family: var(--eit-mono);
  font-size: 9px;
  letter-spacing: .1em;
  cursor: pointer;
  border-radius: 2px;
  text-transform: uppercase;
  transition: all .15s;
}

.ecp-key-btn:hover {
  border-color: var(--eit-accent);
  color: var(--eit-accent);
}

.ecp-key-checks {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.ecp-key-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 120px;
}

.ecp-key-group-label {
  font-size: 9px;
  letter-spacing: .18em;
  color: var(--eit-accent);
  text-transform: uppercase;
  border-bottom: 1px solid var(--eit-border);
  padding-bottom: 3px;
  margin-bottom: 2px;
}

.ecp-key-check-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  color: var(--eit-text);
  cursor: pointer;
  transition: color .12s;
  white-space: nowrap;
}

.ecp-key-check-label:hover { color: var(--eit-accent); }

.ecp-key-check-label input[type=checkbox] {
  width: 13px;
  height: 13px;
  accent-color: var(--eit-accent);
  cursor: pointer;
  flex-shrink: 0;
}

@media (max-width: 540px) {
  .ecp-key-checks { flex-direction: column; }
  .ecp-key-picker-header { flex-direction: column; align-items: flex-start; }
}

/* ── 結果 Modal 按鈕組 ── */
.eit-result-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 16px;
}

.eit-result-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 12px 20px;
  border-radius: 2px;
  font-family: var(--eit-mono, 'Courier New', monospace);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  text-decoration: none !important;
  cursor: pointer;
  transition: opacity .15s;
  border: none;
  line-height: 1;
}

.eit-result-btn:hover { opacity: .85; }

/* 前往和弦聽力（藍色）*/
.eit-result-btn-chord {
  background: var(--eit-accent2, #7eb8c8) !important;
  color: var(--eit-bg, #0d0d0f) !important;
}

/* 解鎖/加入會員（金色）*/
.eit-result-btn-member {
  background: var(--eit-accent, #c8a96e) !important;
  color: var(--eit-bg, #0d0d0f) !important;
}

/* Facebook 分享（FB 藍）*/
.eit-result-btn-fb {
  background: #1877f2 !important;
  color: #fff !important;
  font-family: var(--eit-mono, 'Courier New', monospace) !important;
}

.eit-result-btn-fb:hover { opacity: .88; }