:root{
  --bg: #11151c;
  --bg-panel: #171c25;
  --bg-panel-2: #1c2230;
  --hairline: #262e3a;
  --ink: #c9c4b8;
  --ink-dim: #98a2b3;
  --ink-faint: #748094;
  --gold: #e0a458;
  --gold-dim: #a9824f;
  --scale: 1;
  --safe-top: env(safe-area-inset-top);
  --safe-bottom: env(safe-area-inset-bottom);
}
*{box-sizing:border-box; -webkit-tap-highlight-color:transparent;}
.hidden{ display:none !important; }
/* Explicit view visibility: keeps the redesigned shell from ever overriding the app state. */
.practice-view{ display:block; min-height:100vh; min-height:100dvh; }
.practice-view.hidden{ display:none !important; }
.home-view.hidden{ display:none !important; }
#list{ display:block; min-height:1px; }
/* Guard against horizontal overflow without overflow-x:hidden on body/html,
   which is known to silently break touch-scrolling on iOS Safari. */
.word, .sentence, .sentence-pron, .translation, .home-title, .home-copy, .ipa-value{ overflow-wrap:break-word; word-break:break-word; }
/* ---- Accessibility foundation ---- */
.sr-only{
  position:absolute !important; width:1px !important; height:1px !important;
  padding:0 !important; margin:-1px !important; overflow:hidden !important;
  clip:rect(0,0,0,0) !important; white-space:nowrap !important; border:0 !important;
}
:focus-visible{
  outline:2px solid var(--gold) !important;
  outline-offset:3px;
}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto !important;}
  *, *::before, *::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
    scroll-behavior:auto !important;
  }
}

html,body{margin:0;padding:0; overscroll-behavior-y:contain; width:100%;}
body{
  background:var(--bg);
  color:var(--ink);
  font-family: Georgia, 'Iowan Old Style', 'Palatino Linotype', 'PT Serif', serif;
  -webkit-font-smoothing:antialiased;
  min-height:100vh;
  min-height:100dvh;
}
input, textarea{ user-select:text; -webkit-user-select:text; }
button, [role="button"]{ touch-action:manipulation; }
.ui, input, button, .meta, .num, .translation, .empty, .count, .footnote{
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}
.skip-link{
  position:absolute; left:-999px; top:0; z-index:100;
  background:var(--gold); color:#11151c; padding:10px 16px; border-radius:0 0 8px 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size:.85rem; font-weight:600;
}
.skip-link:focus{ left:0; }

/* ---- Header ---- */
header{
  position:sticky; top:0; z-index:5;
  background:linear-gradient(var(--bg) 82%, transparent);
  padding:calc(14px + var(--safe-top)) 18px 10px;
  border-bottom:1px solid var(--hairline);
}
.title-row{ max-width:620px; margin:0 auto; }
.brand-row{ display:flex; align-items:center; gap:10px; margin-bottom:6px; }
.logo-mark{ flex:none; width:48px; height:16px; }
.brand-name{
  font-family: Georgia, 'Iowan Old Style', 'Palatino Linotype', 'PT Serif', serif;
  font-size:1.3rem; font-weight:700; letter-spacing:.01em; color:var(--ink);
}
.steps-row{
  display:flex; align-items:center; flex-wrap:wrap; gap:6px; margin-bottom:10px;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size:.7rem; letter-spacing:.02em;
}
.steps-row .step{ color:var(--gold); }
.steps-row .arrow{ color:var(--ink-faint); }

.mini-progress-row{
  display:flex; align-items:center; gap:10px; margin-bottom:10px;
}
.mini-progress-track{
  flex:1; height:5px; border-radius:3px; background:var(--bg-panel-2); overflow:hidden;
}
.mini-progress-fill{
  height:100%; width:0%; border-radius:3px;
  background:linear-gradient(90deg, var(--gold-dim), var(--gold));
  transition:width .3s ease;
}
.mini-progress-label{
  flex:none; font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size:.68rem; color:var(--ink-faint); font-variant-numeric:tabular-nums;
}

.search-wrap{
  position:relative;
  max-height:120px;
  overflow:hidden;
  transition:max-height .22s ease, opacity .22s ease, margin .22s ease;
}
.search-wrap.hidden{ max-height:0; opacity:0; margin:0; pointer-events:none; }
#search{
  width:100%; background:var(--bg-panel); border:1px solid var(--hairline);
  color:var(--ink); font-size:1.05rem; padding:12px 14px; border-radius:8px;
}
#search::placeholder{ color:var(--ink-faint); }
#search:focus{ border-color:var(--gold-dim); }
.filters{ display:flex; gap:6px; margin-top:8px; flex-wrap:wrap; }
.filter{
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background:var(--bg-panel-2); color:var(--ink-dim); border:1px solid var(--hairline);
  border-radius:999px; padding:6px 12px; font-size:.72rem; cursor:pointer;
  transition:border-color .15s ease, color .15s ease, background .15s ease;
}
.filter[aria-pressed="true"]{ color:#11151c; background:var(--gold); border-color:var(--gold); font-weight:600; }
.count{ font-size:.72rem; color:var(--ink-faint); margin-top:8px; }

/* ---- Main list ---- */
main{
  max-width:620px; margin:0 auto;
  padding:8px 18px calc(88px + var(--safe-bottom));
}


.entry{
  display:flex; align-items:flex-start; gap:12px; padding:20px 0;
  border-bottom:1px solid var(--hairline);
  content-visibility:auto; contain-intrinsic-size:220px;
  transition:opacity .15s ease;
}
.entry:last-child{ border-bottom:none; }
.entry.is-known{ opacity:.6; }
.entry-main{ flex:1; min-width:0; }
.entry-actions{
  flex:none; display:flex; flex-direction:column; align-items:center; gap:8px; padding-top:2px;
}
.action-btn{
  flex:none; width:34px; height:34px; border-radius:50%;
  border:1px solid var(--hairline); background:var(--bg-panel-2); color:var(--ink-dim);
  display:flex; align-items:center; justify-content:center; cursor:pointer; padding:0;
  transition:border-color .15s ease, color .15s ease, background .15s ease;
}
.action-btn svg{ width:15px; height:15px; }
.action-btn svg.fill{ fill:currentColor; }
.action-btn svg.stroke{ fill:none; stroke:currentColor; stroke-width:2; stroke-linecap:round; stroke-linejoin:round; }
.action-btn:hover{ color:var(--ink); border-color:var(--gold-dim); }
.action-btn.active, .action-btn.playing, .action-btn.listening{ color:var(--gold); border-color:var(--gold-dim); }
.action-btn.known-btn[aria-pressed="true"]{ color:#11151c; background:var(--gold); border-color:var(--gold); }
.action-btn:disabled{ opacity:.4; cursor:default; }
.action-btn.info-btn{ font-family: Georgia, serif; font-style:italic; font-size:.78rem; line-height:1; }

.head{ display:flex; align-items:baseline; gap:9px; margin-bottom:12px; flex-wrap:wrap; }
.num{ font-size:.7rem; color:var(--ink-faint); min-width:2em; font-variant-numeric:tabular-nums; }
.word{ font-size:calc(1.42rem * var(--scale)); font-weight:700; color:var(--ink); }
.word-pron{
  font-size:calc(.92rem * var(--scale)); color:var(--gold);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; letter-spacing:.02em;
}
.known-badge{
  display:none; align-items:center; gap:4px; font-size:.65rem; color:var(--gold);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  letter-spacing:.03em; text-transform:uppercase; margin-left:auto;
}
.entry.is-known .known-badge{ display:flex; }
.known-badge svg{ width:11px; height:11px; }

.ipa-box{
  background:var(--bg-panel); border-left:2px solid var(--gold-dim); border-radius:4px;
  padding:10px 14px; margin-bottom:12px;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}
.ipa-box.hidden{ display:none; }
.ipa-line{ display:flex; gap:10px; font-size:.85rem; margin-bottom:4px; }
.ipa-label{ flex:none; width:4.2em; color:var(--ink-faint); text-transform:uppercase; font-size:.68rem; letter-spacing:.04em; padding-top:.2em; }
.ipa-value{ color:var(--ink); }
.ipa-note{ margin:10px 0 0; font-size:.8rem; line-height:1.5; color:var(--ink-dim); }
.ipa-note.ipa-confusable{ color:var(--ink-faint); }
.ipa-tag{ display:block; font-size:.66rem; letter-spacing:.05em; text-transform:uppercase; color:var(--gold-dim); margin-bottom:2px; }

.sentence{ font-size:calc(1.18rem * var(--scale)); line-height:1.65; color:var(--ink); margin-bottom:4px; letter-spacing:.01em; }
.entry.practicing .sentence, .entry.practicing .sentence-pron{ filter:blur(7px); user-select:none; transition:filter .15s ease; }
.sentence-pron{
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size:calc(.96rem * var(--scale)); letter-spacing:.03em; color:var(--gold); margin-bottom:12px;
}
.translation{ font-size:calc(1.02rem * var(--scale)); color:var(--ink-dim); }

#sentinel{ height:1px; }
.empty{ text-align:center; color:var(--ink-faint); font-size:.9rem; padding:60px 20px; }

/* ---- Practice / Voice boxes ---- */
.practice-box, .voice-box{
  margin-top:12px; margin-bottom:4px; padding:12px 14px;
  background:var(--bg-panel); border:1px solid var(--hairline); border-radius:10px;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}
.practice-box.hidden, .voice-box.hidden{ display:none; }
.practice-hint, .voice-hint{ margin:0 0 8px; font-size:.74rem; color:var(--ink-faint); }
.practice-input-inline, .voice-transcript{
  width:100%; background:var(--bg-panel-2); border:1px solid var(--hairline); border-radius:8px;
  color:var(--ink); font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size:1.05rem; line-height:1.45; padding:12px 12px; min-height:52px;
}
.practice-input-inline{ resize:vertical; font-size:1.25rem; line-height:1.5; }
.practice-input-inline:focus{ border-color:var(--gold-dim); }
.voice-transcript{ min-height:48px; white-space:pre-wrap; word-break:break-word; }
.voice-transcript.listening{ border-color:var(--gold-dim); box-shadow:0 0 0 1px var(--gold-dim); }
.voice-transcript .interim{ color:var(--ink-faint); font-style:italic; }
.practice-entry-actions, .voice-entry-actions{ display:flex; gap:8px; margin-top:9px; flex-wrap:wrap; }
.practice-check-btn, .practice-reveal-btn, .voice-check-btn, .voice-stop-btn, .voice-retry-btn{
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size:.76rem; font-weight:600; padding:9px 14px; border-radius:7px; cursor:pointer; min-height:36px;
}
.practice-check-btn, .voice-check-btn{ background:linear-gradient(135deg, var(--gold), var(--gold-dim)); color:#11151c; border:none; }
.practice-reveal-btn, .voice-stop-btn, .voice-retry-btn{ background:var(--bg-panel-2); color:var(--ink-dim); border:1px solid var(--hairline); }
.practice-reveal-btn:hover, .voice-stop-btn:hover, .voice-retry-btn:hover{ color:var(--ink); border-color:var(--gold-dim); }
.practice-entry-result, .voice-entry-result{ margin-top:10px; font-size:.85rem; }
.practice-entry-result:empty, .voice-entry-result:empty{ margin-top:0; }
.practice-box-msg, .voice-box-msg{ margin-bottom:6px; }
.practice-box-msg.ok, .voice-box-msg.ok{ color:#a9d8bc; }
.practice-box-msg.bad, .voice-box-msg.bad{ color:var(--ink-dim); }
.practice-correct-sentence, .voice-correct-sentence{
  line-height:1.7; font-family: Georgia, 'Iowan Old Style', 'Palatino Linotype', 'PT Serif', serif; font-size:1.02rem;
}
.diff-word{ margin-right:3px; }
.diff-word.diff-ok{ color:var(--ink-dim); }
.diff-word.diff-bad{ color:var(--gold); font-weight:700; text-decoration:underline; text-decoration-color:var(--gold-dim); text-underline-offset:3px; }

::selection{ background:var(--gold-dim); color:#11151c; }

/* ---- Bottom nav ---- */
.bottom-nav{
  position:fixed; left:0; right:0; bottom:0; z-index:30; display:flex;
  background:rgba(23,28,37,.94); -webkit-backdrop-filter:blur(14px); backdrop-filter:blur(14px);
  border-top:1px solid var(--hairline); padding-bottom:var(--safe-bottom);
}
/* Hide search navigation while the Frases view is active. */
#main.connect-mode ~ #bottom-nav #nav-search-btn{ display:none !important; }

.nav-btn{
  flex:1; display:flex; flex-direction:column; align-items:center; justify-content:center; gap:3px;
  padding:9px 0 8px; background:none; border:none; color:var(--ink-faint);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size:.66rem; letter-spacing:.01em; cursor:pointer; min-height:48px;
}
.nav-btn svg{ width:22px; height:22px; }
.nav-btn.active{ color:var(--gold); }

/* ---- Settings bottom sheet ---- */
.sheet-backdrop{
  position:fixed; inset:0; z-index:35; background:rgba(0,0,0,.5); opacity:1; transition:opacity .22s ease;
}
.sheet-backdrop.hidden{ opacity:0; pointer-events:none; }
.settings-sheet{
  position:fixed; left:0; right:0; bottom:0; z-index:36; max-width:620px; margin:0 auto;
  background:var(--bg-panel); border:1px solid var(--hairline); border-bottom:none;
  border-radius:18px 18px 0 0; padding:10px 20px calc(24px + var(--safe-bottom));
  max-height:85vh; overflow-y:auto;
  transform:translateY(0); transition:transform .25s ease, opacity .25s ease;
}
.settings-sheet.hidden{ transform:translateY(100%); opacity:0; pointer-events:none; }
body.sheet-locked{ width:100%; overflow:hidden; }
.settings-sheet{ overscroll-behavior:contain; }
.instructions-sheet-el{ max-height:72vh; }
.sheet-handle{ width:36px; height:4px; border-radius:2px; background:var(--hairline); margin:6px auto 14px; }
.sheet-header-row{ display:flex; align-items:flex-start; justify-content:space-between; gap:12px; margin-bottom:14px; }
.sheet-header-row .sheet-title{ margin-bottom:0; padding-top:4px; }
.sheet-close-btn{
  flex:none; width:32px; height:32px; border-radius:50%; display:flex; align-items:center; justify-content:center;
  background:var(--bg-panel-2); border:1px solid var(--hairline); color:var(--ink-dim); cursor:pointer;
}
.sheet-close-btn svg{ width:16px; height:16px; }
.sheet-close-btn:active{ color:var(--gold); border-color:var(--gold-dim); }
.sheet-title{
  margin:0 0 14px; font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size:.95rem; font-weight:600; color:var(--ink);
}
.sheet-progress{ margin-bottom:18px; font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; }
.sheet-progress-head{ display:flex; justify-content:space-between; align-items:baseline; font-size:.85rem; color:var(--ink); margin-bottom:8px; }
.sheet-progress-percent{ color:var(--gold); font-variant-numeric:tabular-nums; }
.progress-track{ height:6px; border-radius:3px; background:var(--bg-panel-2); overflow:hidden; }
.progress-fill{ height:100%; width:0%; border-radius:3px; background:linear-gradient(90deg, var(--gold-dim), var(--gold)); transition:width .3s ease; }
.sheet-progress-sub{ font-size:.72rem; color:var(--ink-faint); margin-top:8px; }

.speed-row{ display:flex; align-items:center; gap:10px; margin-top:0; margin-bottom:18px; font-size:.74rem; color:var(--ink-dim); }
.speed-row label{ flex:none; white-space:nowrap; }
.speed-row input[type="range"]{ flex:1; accent-color: var(--gold); height:4px; }
#speed-val{ flex:none; min-width:3.4em; text-align:right; color:var(--gold); font-variant-numeric: tabular-nums; }
.font-row{ display:flex; align-items:center; justify-content:space-between; gap:10px; margin-bottom:18px; font-size:.74rem; color:var(--ink-dim); }
.font-row-label{ flex:none; white-space:nowrap; }
.font-btns{ display:flex; gap:6px; }
.font-btn{
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background:var(--bg-panel-2); color:var(--ink-dim); border:1px solid var(--hairline);
  border-radius:7px; padding:8px 12px; font-size:.76rem; cursor:pointer; min-height:36px;
  transition:border-color .15s ease, color .15s ease;
}
.font-btn:hover{ color:var(--ink); border-color:var(--gold-dim); }
.font-btn:active{ color:var(--gold); }

.sheet-divider{ height:1px; background:var(--hairline); margin:4px 0 16px; }
.sheet-row{
  display:flex; align-items:center; justify-content:space-between; gap:12px; margin-bottom:16px;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}
.sheet-row-title{ font-size:.85rem; color:var(--ink); font-weight:600; margin-bottom:2px; }
.sheet-row-help{ font-size:.72rem; color:var(--ink-faint); margin:0; }

.phonetic-guide{ display:flex; flex-direction:column; gap:16px; margin-bottom:4px; }
.phonetic-item{ padding-bottom:14px; border-bottom:1px solid var(--hairline); }
.phonetic-item:last-child{ border-bottom:none; padding-bottom:0; }
.phonetic-symbol{
  font-family: Georgia, 'Iowan Old Style', 'Palatino Linotype', 'PT Serif', serif;
  font-size:1.05rem; font-weight:700; color:var(--gold); margin-bottom:4px; letter-spacing:.02em;
}
.phonetic-desc{
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size:.82rem; line-height:1.55; color:var(--ink-dim); margin:0;
}
.phonetic-desc strong{ color:var(--gold); font-weight:700; }
.sheet-btn{
  flex:none; background:var(--bg-panel-2); color:var(--ink-dim); border:1px solid var(--hairline);
  border-radius:8px; padding:9px 14px; font-size:.78rem; font-weight:600; cursor:pointer; min-height:38px;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  transition:border-color .15s ease, color .15s ease;
}
.sheet-btn:hover{ color:var(--ink); border-color:var(--gold-dim); }
.sheet-btn-gold{ background:linear-gradient(135deg, var(--gold), var(--gold-dim)); color:#11151c; border:none; }
.install-btn{ display:none; }
.install-btn.show{ display:inline-flex; align-items:center; }

/* ---- Toast ---- */
.toast{
  position:fixed; left:50%; bottom:calc(76px + var(--safe-bottom)); transform:translate(-50%, 12px);
  background:var(--bg-panel-2); color:var(--ink); border:1px solid var(--hairline);
  padding:10px 18px; border-radius:999px; font-size:.78rem;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  opacity:0; pointer-events:none; transition:opacity .2s ease, transform .2s ease; z-index:40;
  max-width:88vw; text-align:center;
}
.toast.show{ opacity:1; transform:translate(-50%, 0); }

@media (max-width:480px){
  .word{ font-size:calc(1.26rem * var(--scale)); }
  .sentence{ font-size:calc(1.08rem * var(--scale)); }
  .action-btn{ width:32px; height:32px; }
}

/* ==================== HOME SCREEN ==================== */
.home-view{
  min-height:100vh; min-height:100dvh;
  padding:calc(28px + var(--safe-top)) 24px calc(40px + var(--safe-bottom));
  display:flex; flex-direction:column; justify-content:center;
}
.home-inner{ max-width:480px; margin:0 auto; width:100%; }
.home-brand-row{ display:flex; align-items:center; gap:10px; margin-bottom:22px; }
.logo-mark{ flex:none; width:48px; height:16px; }
.logo-mark-lg{ width:56px; height:19px; }
.home-eyebrow{
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size:.72rem; letter-spacing:.06em; text-transform:uppercase; color:var(--gold);
  margin-bottom:10px;
}
.home-title{
  font-family: Georgia, 'Iowan Old Style', 'Palatino Linotype', 'PT Serif', serif;
  font-size:clamp(1.8rem, 7vw, 2.4rem); line-height:1.2; font-weight:700; color:var(--ink);
  margin:0 0 14px;
}
.home-title em{ color:var(--gold); font-style:normal; }
.home-copy{
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size:.95rem; line-height:1.55; color:var(--ink-dim); margin:0 0 24px;
}
.home-actions{ display:flex; flex-direction:column; gap:10px; margin-bottom:28px; }
.start-label{
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size:.78rem; font-weight:600; letter-spacing:.02em; color:var(--ink-dim);
}
.start-row{ display:flex; flex-direction:column; gap:10px; }
.start-row .start-go-btn{ width:100%; }
.btn-primary, .btn-secondary{
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size:1rem; font-weight:700; padding:15px 20px; border-radius:12px; cursor:pointer;
  min-height:52px; text-align:center;
}
.btn-primary{ background:linear-gradient(135deg, var(--gold), var(--gold-dim)); color:#11151c; border:none; }
.btn-secondary{ background:var(--bg-panel-2); color:var(--ink); border:1px solid var(--hairline); }
.btn-secondary:hover{ border-color:var(--gold-dim); }

.home-card{
  background:var(--bg-panel); border:1px solid var(--hairline); border-radius:14px;
  padding:18px 20px; margin-bottom:14px;
}
.home-card-eyebrow{
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size:.68rem; letter-spacing:.06em; text-transform:uppercase; color:var(--gold-dim);
  margin-bottom:8px;
}
.home-card-copy{
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size:.85rem; line-height:1.5; color:var(--ink-dim); margin:0;
}
.home-progress-number{
  font-family: Georgia, 'Iowan Old Style', 'Palatino Linotype', 'PT Serif', serif;
  font-size:1.7rem; font-weight:700; color:var(--ink); margin-bottom:2px;
}
.home-progress-of{ font-size:1rem; color:var(--ink-faint); font-weight:400; }
.home-progress-card .progress-track{ margin-top:12px; }
.home-progress-percent{
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size:.72rem; color:var(--gold); margin-top:6px; text-align:right;
}
.home-footer{
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size:.68rem; color:var(--ink-faint); text-align:center; margin-top:8px;
}

/* Back button (practice header) */
.back-btn{
  flex:none; width:30px; height:30px; border-radius:50%; border:none; background:transparent;
  color:var(--ink-dim); display:flex; align-items:center; justify-content:center; cursor:pointer; padding:0;
  margin-right:2px;
}
.back-btn svg{ width:20px; height:20px; }
.back-btn:hover{ color:var(--gold); }

.header-icon-btn{
  flex:none; width:32px; height:32px; border-radius:50%; border:1px solid var(--hairline); background:var(--bg-panel-2);
  color:var(--ink-dim); display:flex; align-items:center; justify-content:center; cursor:pointer; padding:0;
  margin-left:auto;
}
.header-icon-btn svg{ width:16px; height:16px; }
.header-icon-btn:hover{ color:var(--gold); border-color:var(--gold-dim); }
.grammar-search-wrap{ max-width:620px; margin:10px auto 0; }
.grammar-search-wrap.hidden{ display:none; }
.grammar-search-wrap input{
  width:100%; height:40px; border-radius:10px; border:1px solid var(--hairline); background:var(--bg-panel);
  color:var(--ink); padding:0 14px; font-size:.92rem; font-family:inherit;
}
.grammar-search-wrap input:focus{ border-color:var(--gold-dim); }
.gi-level-badge{
  flex:none; font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif; font-size:.62rem; font-weight:700;
  color:var(--gold); background:var(--bg-panel-2); border:1px solid var(--hairline); border-radius:6px; padding:2px 6px;
}

/* ---- Conectando Frases (Baby Steps / Método Noah) ---- */
.connect-view{
  display:flex; flex-direction:column;
  padding-top:4px; padding-bottom:8px;
}
.connect-mode-btn{
  flex:1; height:40px; border-radius:10px; border:1px solid var(--hairline);
  background:var(--bg-panel-2); color:var(--ink-dim); cursor:pointer;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size:.82rem; font-weight:600;
}
.connect-mode-btn.active{ background:linear-gradient(135deg, var(--gold), var(--gold-dim)); color:#11151c; border-color:transparent; }

.connect-chips{ flex:none; display:flex; flex-wrap:wrap; gap:6px; margin-bottom:10px; }
.connect-chip{
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background:var(--bg-panel-2); color:var(--ink-faint); border:1px solid var(--hairline);
  border-radius:999px; padding:6px 12px; font-size:.72rem; cursor:pointer;
  transition:background .15s ease, color .15s ease, border-color .15s ease;
}
.connect-chip.active{ color:#11151c; background:var(--gold); border-color:var(--gold); font-weight:600; }

.connect-card{
  flex:0 1 auto; min-height:0; background:var(--bg-panel); border:1px solid var(--hairline); border-radius:18px;
  overflow-y:auto; overflow-x:hidden; overscroll-behavior:contain; -webkit-overflow-scrolling:touch;
  display:flex; flex-direction:column;
  scrollbar-width:thin; scrollbar-color:var(--gold-dim) transparent;
}
.connect-card::-webkit-scrollbar{ width:8px; }
.connect-card::-webkit-scrollbar-track{ background:transparent; }
.connect-card::-webkit-scrollbar-thumb{ background:var(--gold-dim); border-radius:8px; }
.connect-card-top{ flex:none; display:flex; align-items:center; justify-content:space-between; padding:12px 18px 4px; position:sticky; top:0; z-index:1; background:var(--bg-panel); }
.connect-progress{
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size:.68rem; letter-spacing:.05em; color:var(--ink-faint); text-transform:uppercase;
}
.connect-progress b{ color:var(--gold); }

.connect-split{ flex:none; display:flex; flex-direction:column; padding:2px 0; }
.connect-half{
  flex:none; padding:10px 22px; font-size:calc(1.18rem * var(--connect-scale, 1)); line-height:1.4; color:var(--ink);
}
.connect-half.hidden{ display:none; }
.connect-half-pron{
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size:calc(.78rem * var(--connect-scale, 1)); line-height:1.4; color:var(--ink-dim); margin-top:6px; letter-spacing:.01em;
}

.connect-zone{
  flex:none; display:flex; flex-direction:column; align-items:center; gap:5px;
  padding:8px 22px; margin:2px 0;
  border-top:1px solid var(--hairline); border-bottom:1px solid var(--hairline);
}
.connect-zone.no-top{ border-top:none; }
.connect-badge{
  background:linear-gradient(135deg, var(--gold), var(--gold-dim)); color:#11151c;
  padding:5px 15px; border-radius:999px; font-weight:700; font-size:calc(.78rem * var(--connect-scale, 1));
  white-space:nowrap; font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}
.connect-badge-pron{
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size:calc(.7rem * var(--connect-scale, 1)); color:var(--ink-faint); letter-spacing:.01em;
}

.connect-meta{ flex:none; padding:10px 22px 12px; border-top:1px solid var(--hairline); }
.connect-translation{
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size:calc(.83rem * var(--connect-scale, 1)); line-height:1.4; color:var(--ink-faint);
}

.connect-advance-btn{
  position:fixed; left:18px; right:18px; max-width:584px; margin:0 auto;
  height:46px; border-radius:14px; border:none; cursor:pointer; z-index:15;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size:.92rem; font-weight:600;
  background:linear-gradient(135deg, var(--gold), var(--gold-dim)); color:#11151c;
  box-shadow:0 4px 16px rgba(0,0,0,.35);
}
.connect-advance-btn:active{ transform:scale(.98); }


/* ---- Tela de Frases (lista) ---- */
.connect-head{ flex:none; margin:2px 0 12px; }
.connect-title{ margin:0; font-size:1.55rem; color:var(--ink); }
.connect-sub{ margin:4px 0 0; font-size:.8rem; line-height:1.4; color:var(--ink-dim); font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif; }
.connect-mode-row{ flex:none; display:grid; grid-template-columns:repeat(2, minmax(0,1fr)); gap:6px; margin-bottom:10px; }
.connect-mode-btn{ display:inline-flex; align-items:center; justify-content:center; gap:5px; height:38px; border-radius:999px; font-size:.78rem; padding:0 8px; min-width:0; overflow:hidden; white-space:nowrap; text-overflow:ellipsis; }
.connect-mode-btn svg{ width:14px; height:14px; flex:none; }
.connect-list{
  display:flex; flex-direction:column; gap:10px;
}
.connect-item{ flex:none; display:flex; align-items:flex-start; gap:12px; padding:14px; background:var(--bg-panel); border:1px solid var(--hairline); border-radius:14px; }
.connect-item.is-learned{ opacity:.6; }
.ci-learned-btn[aria-pressed="true"]{ color:#11151c; background:var(--gold); border-color:var(--gold); }
.ci-num{ flex:none; font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif; font-size:calc(.72rem * var(--connect-scale,1)); color:var(--ink-faint); padding-top:.35em; }
.ci-body{ flex:1; min-width:0; }
.ci-en{ font-size:calc(1.08rem * var(--connect-scale,1)); line-height:1.35; color:var(--ink); }
.ci-en mark{ background:none; color:var(--gold); font-weight:600; }
.ci-qa-label{ color:var(--ink-dim); font-weight:700; }
.ci-qa-answer{ display:block; margin-top:4px; }
.verb-head{ display:flex; align-items:baseline; gap:8px; flex-wrap:wrap; margin-bottom:4px; }
.verb-inf{ font-weight:700; color:var(--gold); font-size:calc(1.02rem * var(--connect-scale,1)); }
.verb-pt{ font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif; font-size:calc(.8rem * var(--connect-scale,1)); color:var(--ink-faint); }
.verb-forms{ display:flex; flex-wrap:wrap; gap:6px 14px; margin-bottom:8px; }
.verb-forms .vf{ font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif; font-size:calc(.76rem * var(--connect-scale,1)); color:var(--ink-dim); }
.verb-forms .vf b{ color:var(--ink-faint); font-weight:600; margin-right:3px; }
.ci-pron{ margin-top:4px; font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif; font-size:calc(.74rem * var(--connect-scale,1)); color:var(--ink-dim); }
.ci-tr{ margin-top:3px; font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif; font-size:calc(.82rem * var(--connect-scale,1)); color:var(--ink-faint); }
.ci-actions{ flex:none; display:flex; align-items:center; gap:4px; }
.ci-empty{ color:var(--ink-faint); text-align:center; padding:24px 0; font-size:.85rem; }
.connect-back-top-btn{
  align-self:center; margin-top:4px;
  font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
  font-size:.78rem; font-weight:600; color:var(--ink-dim);
  background:var(--bg-panel); border:1px solid var(--hairline); border-radius:999px;
  padding:10px 18px; cursor:pointer;
}
.connect-back-top-btn:hover{ color:var(--gold); border-color:var(--gold-dim); }

/* Botão X nos campos de busca */
.clearable{ position:relative; width:100%; }
.clearable input{ padding-right:42px !important; }
.clearable input::-webkit-search-cancel-button, .clearable input::-webkit-search-decoration{ -webkit-appearance:none; appearance:none; display:none; }
.clear-x{
  position:absolute; right:6px; top:50%; transform:translateY(-50%);
  width:32px; height:32px; padding:8px; border:none; border-radius:50%;
  background:transparent; color:var(--ink-faint); cursor:pointer;
}
.clear-x svg{ width:100%; height:100%; }
.clear-x:hover, .clear-x:active{ color:var(--gold); }


/* ============================================================
   Frequency 2.4.4 — Frases: alinhamento com o layout principal
   Tipografia, espaçamento e largura seguem o mesmo ritmo visual
   usado na tela principal de conteúdo.
   ============================================================ */

.connect-list{
  gap:0;
  padding-right:0;
}

.connect-item{
  display:flex;
  align-items:flex-start;
  gap:12px;
  padding:20px 0;
  background:transparent;
  border:0;
  border-bottom:1px solid var(--hairline);
  border-radius:0;
}

.connect-item:last-child{
  border-bottom:none;
}

.ci-num{
  font-size:.72rem;
  padding-top:.35em;
}

.ci-en{
  font-size:calc(1.18rem * var(--connect-scale, 1));
  line-height:1.65;
  letter-spacing:.01em;
}

.ci-pron{
  margin-top:0;
  margin-bottom:12px;
  font-size:calc(.96rem * var(--connect-scale, 1));
  line-height:1.4;
  letter-spacing:.03em;
}

.ci-tr{
  margin-top:0;
  font-size:calc(1.02rem * var(--connect-scale, 1));
  line-height:1.45;
}

.ci-actions{
  padding-top:2px;
}

@media (max-width:480px){
  .ci-en{
    font-size:calc(1.08rem * var(--connect-scale, 1));
  }
}

/* ==================== GRAMMAR SCREEN ==================== */
.grammar-view{ min-height:100vh; min-height:100dvh; }
.grammar-main{
  max-width:620px; margin:0 auto;
  padding:14px 18px calc(32px + var(--safe-bottom));
}
.grammar-level-tabs{
  display:flex; gap:8px; overflow-x:auto; padding:2px 2px 10px;
  -webkit-overflow-scrolling:touch; scrollbar-width:none;
}
.grammar-level-tabs::-webkit-scrollbar{ display:none; }
.grammar-level-tab{
  flex:none; display:flex; flex-direction:column; align-items:center; gap:2px;
  min-width:76px; padding:10px 12px; border-radius:12px; border:1px solid var(--hairline);
  background:var(--bg-panel-2); color:var(--ink-dim); cursor:pointer;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}
.grammar-level-tab .glt-code{ font-size:.9rem; font-weight:700; }
.grammar-level-tab .glt-count{ font-size:.62rem; color:var(--ink-faint); }
.grammar-level-tab.active{ background:linear-gradient(135deg, var(--gold), var(--gold-dim)); color:#11151c; border-color:transparent; }
.grammar-level-tab.active .glt-count{ color:#11151c; opacity:.75; }

.grammar-level-heading{
  font-family: Georgia, 'Iowan Old Style', 'Palatino Linotype', 'PT Serif', serif;
  font-size:1.05rem; font-weight:700; color:var(--ink); margin:6px 2px 12px;
}

.grammar-list{ display:flex; flex-direction:column; gap:8px; }
.grammar-item{
  display:flex; align-items:center; gap:12px; padding:14px; background:var(--bg-panel);
  border:1px solid var(--hairline); border-radius:14px; cursor:pointer; text-align:left;
  width:100%; font-family:inherit; color:inherit;
}
.grammar-item:hover{ border-color:var(--gold-dim); }
.grammar-item.is-watched{ opacity:.6; }
.gi-flag{
  flex:none; width:30px; height:30px; border-radius:50%; border:1px solid var(--hairline);
  background:var(--bg-panel-2); color:var(--ink-dim); display:flex; align-items:center; justify-content:center; cursor:pointer;
}
.gi-flag svg{ width:14px; height:14px; }
.gi-flag[aria-pressed="true"]{ color:#11151c; background:var(--gold); border-color:var(--gold); }
.gi-num{
  flex:none; width:26px; height:26px; border-radius:50%; background:var(--bg-panel-2);
  color:var(--ink-faint); display:flex; align-items:center; justify-content:center;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size:.72rem; font-weight:600;
}
.gi-topic{ flex:1; min-width:0; font-size:1rem; color:var(--ink); }
.gi-play{
  flex:none; width:34px; height:34px; border-radius:50%; border:1px solid var(--hairline);
  background:var(--bg-panel-2); color:var(--gold); display:flex; align-items:center; justify-content:center;
}
.gi-play svg{ width:15px; height:15px; margin-left:2px; }
.gi-play svg.fill{ fill:currentColor; }

/* ==================== VIDEO MODAL ==================== */
.video-modal{
  position:fixed; inset:0; z-index:60; display:flex; align-items:flex-end; justify-content:center;
}
.video-modal.hidden{ display:none; }
.video-modal-backdrop{ position:absolute; inset:0; background:rgba(10,12,16,.78); }
.video-modal-sheet{
  position:relative; width:100%; max-width:640px; background:var(--bg-panel);
  border-radius:18px 18px 0 0; overflow:hidden;
  padding-bottom:var(--safe-bottom);
  animation:videoSheetIn .22s ease;
}
@keyframes videoSheetIn{ from{ transform:translateY(24px); opacity:0; } to{ transform:translateY(0); opacity:1; } }
.video-modal-frame-wrap{ position:relative; width:100%; aspect-ratio:16/9; background:#000; }
.video-modal-frame-wrap iframe{ position:absolute; inset:0; width:100%; height:100%; border:0; }
.video-modal-close{
  position:absolute; top:10px; right:10px; width:32px; height:32px; border-radius:50%;
  background:rgba(0,0,0,.55); color:#fff; border:none; display:flex; align-items:center; justify-content:center;
  cursor:pointer; z-index:2;
}
.video-modal-close svg{ width:17px; height:17px; }
.video-modal-info{ padding:16px 20px 20px; display:flex; align-items:center; gap:12px; }
.video-modal-info-text{ flex:1; min-width:0; }
.video-modal-fs-btn, .video-modal-fs-exit{
  display:inline-flex; align-items:center; gap:7px; cursor:pointer; flex:none;
  font-family:-apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size:.8rem; font-weight:600;
}
.video-modal-fs-btn{
  min-height:40px; padding:0 14px; border-radius:10px;
  background:var(--bg-panel-2); color:var(--ink); border:1px solid var(--gold-dim);
}
.video-modal-fs-btn svg, .video-modal-fs-exit svg{ width:17px; height:17px; }
.video-modal-fs-btn:hover{ border-color:var(--gold); color:var(--gold); }
.video-modal-fs-exit{
  position:absolute; top:calc(10px + var(--safe-top)); left:10px; z-index:3;
  min-height:36px; padding:0 12px; border-radius:18px; border:none;
  background:rgba(0,0,0,.6); color:#fff;
}
.video-modal-frame-wrap.pseudo-fs{
  position:fixed; inset:0; z-index:70; width:100vw; height:100vh; height:100dvh; aspect-ratio:auto;
}
.video-modal-frame-wrap.is-fs .video-modal-close{ display:none; }
/* Em pé (retrato): gira o player 90° para ele preencher a tela toda, como uma tela cheia em paisagem.
   Ao girar o celular (paisagem) a regra deixa de valer e o player só preenche a tela. */
@media (orientation:portrait){
  .video-modal-frame-wrap.pseudo-fs{
    inset:auto; top:0; left:0; right:auto; bottom:auto;
    width:100vh; width:100dvh; height:100vw;
    transform-origin:top left;
    transform:translateX(100vw) rotate(90deg);
  }
  .video-modal-frame-wrap.pseudo-fs .video-modal-fs-exit{ top:12px; left:12px; }
}
.video-modal.is-fs .video-modal-sheet{ animation:none; }
.video-modal-level{
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size:.68rem; letter-spacing:.06em; text-transform:uppercase; color:var(--gold-dim); margin-bottom:6px;
}
.video-modal-title{
  font-family: Georgia, 'Iowan Old Style', 'Palatino Linotype', 'PT Serif', serif;
  font-size:1.15rem; font-weight:700; color:var(--ink);
}

@media (max-width:480px){
  .grammar-level-tab{ min-width:66px; padding:8px 10px; }
}

/* ==================== HOME: COMBOBOX ==================== */
.combo{ position:relative; width:100%; }
.start-mode-select{
  display:block; width:100%; min-height:56px; padding:0 68px 0 18px;
  background:var(--bg-panel-2); color:var(--ink);
  border:1.5px solid var(--gold-dim); border-radius:12px;
  font-family:-apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size:1.05rem; font-weight:600; cursor:pointer;
  -webkit-appearance:none; appearance:none; text-overflow:ellipsis;
}
.start-mode-select:focus{ border-color:var(--gold); box-shadow:0 0 0 3px rgba(224,164,88,.22); }
.start-mode-select option{ background:var(--bg-panel-2); color:var(--ink); }
.combo-arrow{
  position:absolute; top:0; right:0; bottom:0; width:54px;
  display:flex; align-items:center; justify-content:center;
  border-left:1px solid var(--hairline); border-radius:0 11px 11px 0;
  background:rgba(224,164,88,.14); color:var(--gold); pointer-events:none;
}
.combo-arrow svg{ width:22px; height:22px; }

/* ============================================================
   FREQUENCY 2.11.1 — VISUAL REDESIGN
   Direction: Midnight Editorial / Learning Studio
   Keep the semantic HTML and application behavior intact; this
   layer changes hierarchy, depth, rhythm and interaction cues.
   ============================================================ */
:root{
  --bg:#0a0d12;
  --bg-panel:#10151d;
  --bg-panel-2:#151c26;
  --hairline:rgba(255,255,255,.085);
  --ink:#f2eee5;
  --ink-dim:#a9b1bf;
  --ink-faint:#667181;
  --gold:#f0b45e;
  --gold-dim:#9e713a;
  --gold-soft:rgba(240,180,94,.12);
  --green:#8ed4ae;
  --scale:1;
}

html{
  background:
    radial-gradient(circle at 50% -10%, rgba(240,180,94,.09), transparent 34rem),
    #0a0d12;
}
body{
  background:
    radial-gradient(circle at 8% 12%, rgba(75,104,145,.08), transparent 26rem),
    radial-gradient(circle at 92% 62%, rgba(240,180,94,.045), transparent 30rem),
    #0a0d12;
}

/* A very subtle studio grid gives the app a designed canvas without
   competing with reading content. */
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:-1;
  opacity:.22;
  background-image:
    linear-gradient(rgba(255,255,255,.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.022) 1px, transparent 1px);
  background-size:48px 48px;
  mask-image:linear-gradient(to bottom, black, transparent 78%);
}

/* ---------------- HOME: cinematic landing ---------------- */
.home-view{
  position:relative;
  overflow:hidden;
  justify-content:flex-start;
  padding-top:clamp(34px,8vh,92px);
}
.home-view::before{
  content:"";
  position:absolute;
  width:min(52vw,520px);
  aspect-ratio:1;
  right:-22%;
  top:8%;
  border-radius:50%;
  background:radial-gradient(circle, rgba(240,180,94,.13), rgba(240,180,94,0) 67%);
  filter:blur(2px);
  pointer-events:none;
}
.home-view::after{
  content:"";
  position:absolute;
  width:320px;
  height:320px;
  left:-230px;
  bottom:2%;
  border-radius:50%;
  background:radial-gradient(circle, rgba(83,120,168,.11), transparent 70%);
  pointer-events:none;
}
.home-inner{ max-width:720px; position:relative; z-index:1; }
.home-brand-row{
  gap:12px;
  margin-bottom:clamp(34px,7vh,72px);
}
.home-brand-row::after{
  content:"LEARNING STUDIO";
  margin-left:auto;
  padding:7px 10px;
  border:1px solid var(--hairline);
  border-radius:999px;
  color:var(--ink-faint);
  font:600 .58rem/1 -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  letter-spacing:.16em;
}
.logo-mark-lg{ width:70px; height:23px; }
.home-brand-row .brand-name{ font-size:1.45rem; letter-spacing:-.02em; }
.home-eyebrow{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:.65rem;
  letter-spacing:.18em;
  color:var(--gold);
}
.home-eyebrow::before{
  content:"";
  width:30px;
  height:1px;
  background:linear-gradient(90deg,var(--gold),transparent);
}
.home-title{
  max-width:720px;
  margin-bottom:18px;
  font-size:clamp(2.5rem,7vw,5.25rem);
  line-height:.98;
  letter-spacing:-.055em;
}
.home-title em{
  display:block;
  background:linear-gradient(100deg,#f0b45e 5%,#ffe1a5 45%,#b77b35 95%);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.home-copy{
  max-width:590px;
  font-size:1rem;
  line-height:1.7;
  color:#9ca6b4;
  margin-bottom:36px;
}
.home-actions{
  max-width:650px;
  padding:18px;
  margin-bottom:18px;
  background:rgba(16,21,29,.74);
  border:1px solid rgba(255,255,255,.09);
  border-radius:22px;
  box-shadow:0 24px 80px rgba(0,0,0,.25), inset 0 1px 0 rgba(255,255,255,.035);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
}
.start-label{
  color:#7e8999;
  text-transform:uppercase;
  letter-spacing:.12em;
  font-size:.62rem;
}
.start-row{
  display:grid;
  grid-template-columns:minmax(0,1fr) 132px;
  gap:8px;
}
.start-mode-select{
  min-height:58px;
  border-radius:14px;
  border-color:rgba(240,180,94,.3);
  background:#0c1118;
  font-size:.98rem;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.02);
}
.start-mode-select:hover{ border-color:rgba(240,180,94,.55); }
.combo-arrow{ border-left-color:rgba(240,180,94,.16); background:rgba(240,180,94,.07); }
.btn-primary{
  min-height:58px;
  border-radius:14px;
  background:linear-gradient(135deg,#f5c16f,#b97c36);
  box-shadow:0 10px 28px rgba(240,180,94,.15);
  transition:transform .18s ease,box-shadow .18s ease,filter .18s ease;
}
.btn-primary:hover{ transform:translateY(-2px); filter:brightness(1.04); box-shadow:0 14px 34px rgba(240,180,94,.2); }
.home-progress-card{
  max-width:650px;
  position:relative;
  overflow:hidden;
  margin-bottom:16px;
  padding:20px 22px;
  border-radius:20px;
  background:linear-gradient(135deg,rgba(16,21,29,.95),rgba(21,28,38,.72));
  border-color:rgba(255,255,255,.075);
}
.home-progress-card::after{
  content:"";
  position:absolute;
  width:170px;
  height:170px;
  right:-65px;
  top:-95px;
  border-radius:50%;
  border:1px solid rgba(240,180,94,.12);
  box-shadow:0 0 0 20px rgba(240,180,94,.018),0 0 0 40px rgba(240,180,94,.012);
}
.home-progress-number{ font-size:2.15rem; letter-spacing:-.04em; }
.home-progress-of{ font-size:.95rem; }
.home-card-copy{ color:#7f8998; }
.progress-track{ height:7px; background:#090d13; }
.progress-fill{ background:linear-gradient(90deg,#9e713a,#f0b45e,#ffe0a4); box-shadow:0 0 16px rgba(240,180,94,.18); }
.home-footer{ text-align:left; padding-left:4px; color:#566171; }

/* ---------------- APP HEADER ---------------- */
header{
  background:rgba(10,13,18,.82);
  border-bottom:1px solid rgba(255,255,255,.065);
  box-shadow:0 10px 36px rgba(0,0,0,.12);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  padding-top:calc(12px + var(--safe-top));
}
.title-row{ max-width:780px; }
.brand-row{ margin-bottom:8px; }
.brand-name{ font-size:1.16rem; letter-spacing:-.015em; }
.mini-progress-row{ margin-left:auto; max-width:330px; }
.mini-progress-track{ height:4px; background:#171e28; }
.mini-progress-label{ color:#707b8b; }

/* Search feels like a command bar rather than a form field. */
#search,.grammar-search-wrap input{
  border-color:rgba(255,255,255,.09);
  background:rgba(16,21,29,.88);
  border-radius:13px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.025);
}
#search:focus,.grammar-search-wrap input:focus{ border-color:rgba(240,180,94,.55); box-shadow:0 0 0 3px rgba(240,180,94,.08); }
.filter{ background:#111720; border-color:rgba(255,255,255,.08); }
.filter[aria-pressed="true"]{ background:var(--gold); }

/* ---------------- WORDS: editorial reading column ---------------- */
main{ max-width:780px; padding-left:22px; padding-right:22px; }
.entry{
  position:relative;
  gap:18px;
  padding:25px 4px 26px;
  border-bottom-color:rgba(255,255,255,.065);
}
.entry::before{
  content:"";
  position:absolute;
  left:-22px;
  top:25px;
  width:2px;
  height:0;
  border-radius:2px;
  background:linear-gradient(var(--gold),transparent);
  transition:height .2s ease;
}
.entry:hover::before{ height:48px; }
.entry.is-known::before{ background:linear-gradient(var(--green),transparent); }
.entry.is-known{ opacity:.72; }
.entry-main{ padding-left:2px; }
.head{ margin-bottom:13px; gap:11px; }
.num{ color:#566171; font-size:.62rem; letter-spacing:.04em; }
.word{ font-size:calc(1.58rem * var(--scale)); letter-spacing:-.025em; }
.word-pron{ color:#d99b4d; font-size:calc(.86rem * var(--scale)); }
.known-badge{ color:var(--green); }
.action-btn{
  width:38px;
  height:38px;
  background:#10161f;
  border-color:rgba(255,255,255,.08);
  box-shadow:0 4px 12px rgba(0,0,0,.16);
}
.action-btn:hover{ transform:translateY(-1px); color:var(--gold); border-color:rgba(240,180,94,.45); }
.action-btn.known-btn[aria-pressed="true"]{ background:var(--gold); }
.ipa-box{
  border-left:0;
  border-top:1px solid rgba(240,180,94,.22);
  border-radius:12px;
  background:linear-gradient(135deg,rgba(21,28,38,.92),rgba(15,20,27,.9));
  padding:13px 15px;
}
.sentence{ font-size:calc(1.24rem * var(--scale)); line-height:1.72; }
.translation{ color:#7f8998; }
.sentence-pron{ color:#c48c48; }
.practice-box,.voice-box{
  background:rgba(16,21,29,.88);
  border-color:rgba(255,255,255,.08);
  border-radius:14px;
  box-shadow:0 12px 30px rgba(0,0,0,.12);
}
.practice-input-inline,.voice-transcript{ background:#0c1118; border-color:rgba(255,255,255,.09); border-radius:11px; }

/* ---------------- CONNECT: phrase studio ---------------- */
.connect-view{ max-width:780px; }
.connect-mode-row{ grid-template-columns:repeat(4,minmax(0,1fr)); gap:7px; }
.connect-mode-btn{
  height:42px;
  background:#10161f;
  border-color:rgba(255,255,255,.08);
  color:#8e98a8;
  transition:transform .18s ease,border-color .18s ease,background .18s ease;
}
.connect-mode-btn:hover{ transform:translateY(-1px); border-color:rgba(240,180,94,.35); }
.connect-mode-btn.active{ background:linear-gradient(135deg,#f0b45e,#a87237); box-shadow:0 8px 22px rgba(240,180,94,.12); }
.connect-chip{ background:#10161f; border-color:rgba(255,255,255,.08); }
.connect-chip.active{ background:var(--gold); }
.connect-item{ padding:22px 4px; border-bottom-color:rgba(255,255,255,.065); }
.ci-num{ color:#566171; }
.ci-en{ font-size:calc(1.24rem * var(--connect-scale,1)); letter-spacing:-.01em; }
.ci-pron{ color:#c48c48; }
.ci-tr{ color:#7f8998; }

/* ---------------- GRAMMAR: library / catalogue ---------------- */
.grammar-main{ max-width:780px; padding-left:22px; padding-right:22px; }
.grammar-level-tabs{ gap:7px; padding-bottom:14px; }
.grammar-level-tab{
  min-width:82px;
  padding:11px 13px;
  border-radius:13px;
  background:#10161f;
  border-color:rgba(255,255,255,.08);
}
.grammar-level-tab.active{ background:linear-gradient(135deg,#f0b45e,#a87237); box-shadow:0 8px 22px rgba(240,180,94,.12); }
.grammar-level-heading{ font-size:1.2rem; letter-spacing:-.02em; margin:9px 2px 14px; }
.grammar-list{ gap:6px; }
.grammar-item{
  padding:15px 13px;
  border-radius:14px;
  background:rgba(16,21,29,.82);
  border-color:rgba(255,255,255,.07);
  transition:transform .16s ease,border-color .16s ease,background .16s ease;
}
.grammar-item:hover{ transform:translateX(3px); background:#141b24; border-color:rgba(240,180,94,.32); }
.gi-num{ background:#0b1016; }
.gi-play{ background:#0b1016; border-color:rgba(255,255,255,.08); }

/* ---------------- BOTTOM NAV: floating dock ---------------- */
.bottom-nav{
  left:50%;
  right:auto;
  bottom:calc(10px + var(--safe-bottom));
  width:min(620px,calc(100% - 24px));
  transform:translateX(-50%);
  border:1px solid rgba(255,255,255,.09);
  border-radius:20px;
  padding:5px;
  background:rgba(16,21,29,.88);
  box-shadow:0 18px 50px rgba(0,0,0,.38),inset 0 1px 0 rgba(255,255,255,.035);
  backdrop-filter:blur(20px);
  -webkit-backdrop-filter:blur(20px);
}
.nav-btn{
  position:relative;
  min-height:50px;
  border-radius:15px;
  color:#667181;
  transition:background .18s ease,color .18s ease,transform .18s ease;
}
.nav-btn.active{ color:#f3c170; background:rgba(240,180,94,.09); }
.nav-btn.active::after{
  content:"";
  position:absolute;
  bottom:4px;
  width:16px;
  height:2px;
  border-radius:2px;
  background:var(--gold);
}
.nav-btn:hover{ color:#d6dbe2; transform:translateY(-1px); }

/* ---------------- SHEETS / MODALS ---------------- */
.settings-sheet{
  border:1px solid rgba(255,255,255,.08);
  border-bottom:0;
  background:rgba(14,19,26,.96);
  box-shadow:0 -30px 80px rgba(0,0,0,.4);
  backdrop-filter:blur(24px);
  -webkit-backdrop-filter:blur(24px);
}
.sheet-handle{ width:42px; height:4px; border-radius:999px; background:#394352; }
.sheet-close-btn{ background:#151c26; border-color:rgba(255,255,255,.07); }
.video-modal-sheet{ background:#0e131a; border:1px solid rgba(255,255,255,.08); }

/* ---------------- MICRO-INTERACTIONS ---------------- */
@media (prefers-reduced-motion:no-preference){
  .home-inner > *{ animation:freqReveal .55s cubic-bezier(.2,.8,.2,1) both; }
  .home-inner > :nth-child(2){ animation-delay:.04s; }
  .home-inner > :nth-child(3){ animation-delay:.08s; }
  .home-inner > :nth-child(4){ animation-delay:.12s; }
  .home-inner > :nth-child(5){ animation-delay:.16s; }
  .home-inner > :nth-child(6){ animation-delay:.2s; }
  @keyframes freqReveal{ from{ opacity:0; transform:translateY(10px); } to{ opacity:1; transform:none; } }
}

@media (min-width:900px){
  .home-view{ padding-left:48px; padding-right:48px; }
  .home-inner{ max-width:900px; }
  .home-title{ max-width:820px; }
  .home-copy{ max-width:650px; }
  .home-actions{ width:650px; }
  .home-progress-card{ width:650px; }
  main,.grammar-main{ max-width:820px; }
  .entry{ padding-left:10px; padding-right:10px; }
  .entry::before{ left:-14px; }
}

@media (max-width:620px){
  .home-view{ padding-left:18px; padding-right:18px; }
  .home-brand-row::after{ display:none; }
  .home-title{ font-size:clamp(2.35rem,12vw,3.7rem); }
  .home-copy{ font-size:.92rem; }
  .start-row{ grid-template-columns:1fr; }
  .start-row .start-go-btn{ width:100%; }
  .home-actions{ padding:14px; border-radius:18px; }
  main,.grammar-main{ padding-left:18px; padding-right:18px; }
  .entry::before{ left:-12px; }
  .connect-mode-row{ grid-template-columns:repeat(2,minmax(0,1fr)); }
  .bottom-nav{ width:calc(100% - 16px); bottom:calc(6px + var(--safe-bottom)); }
}

@media (max-width:380px){
  .home-title{ font-size:2.25rem; }
  .home-progress-number{ font-size:1.9rem; }
  .nav-btn{ font-size:.61rem; }
}

/* 2.11.2 — botão de limpar busca */
.search-field{ position:relative; }
.search-field input{ padding-right:44px !important; }
.clear-x{
  position:absolute; top:50%; right:8px; transform:translateY(-50%);
  width:30px; height:30px; display:flex; align-items:center; justify-content:center;
  border:0; border-radius:50%; background:transparent; color:var(--ink-faint); cursor:pointer;
}
.clear-x[hidden]{ display:none; }
.clear-x svg{ width:16px; height:16px; }
.clear-x:hover,.clear-x:focus-visible{ color:var(--gold); background:rgba(255,255,255,.05); }

/* 2.11.3/2.11.5 — palavra-título no mesmo tamanho e na mesma cor da frase */
.word{
  font-size:calc(1.24rem * var(--scale));
  letter-spacing:.01em;
  color:var(--ink);
}

/* 2.11.4 — tela principal cabe inteira na tela, sem barra de rolagem */
html:has(.home-view:not(.hidden)),
html:has(.home-view:not(.hidden)) body{ overflow:hidden; height:100%; }
.home-view{
  box-sizing:border-box;
  height:100vh; height:100dvh;
  min-height:0;
  overflow:hidden;
  justify-content:center;
  padding-top:calc(clamp(14px,3.5vh,56px) + var(--safe-top));
  padding-bottom:calc(clamp(12px,3vh,40px) + var(--safe-bottom));
}
.home-brand-row{ margin-bottom:clamp(14px,4.5vh,64px); }
.home-title{ font-size:min(clamp(2.35rem,7vw,5.25rem), 8.4vh); margin-bottom:clamp(10px,2vh,18px); }
.home-copy{ margin-bottom:clamp(14px,3.6vh,36px); }
.home-actions{ margin-bottom:clamp(10px,2vh,18px); }
.home-progress-card{ margin-bottom:clamp(8px,1.8vh,16px); }

@media (max-height:760px){
  .home-copy{ font-size:.88rem; line-height:1.5; }
  .home-actions{ padding:12px; gap:8px; }
  .start-mode-select,.home-actions .btn-primary{ min-height:48px; }
  .home-progress-card{ padding:14px 18px; }
  .home-progress-number{ font-size:1.7rem; }
  .home-progress-card .progress-track{ margin-top:8px; }
}
@media (max-height:620px){
  .home-copy{ display:none; }
  .home-eyebrow{ margin-bottom:6px; }
}
@media (max-height:460px){
  .home-eyebrow,.home-footer{ display:none; }
  .home-brand-row{ margin-bottom:10px; }
  .home-title{ font-size:min(2.1rem, 9vh); }
  .home-progress-card{ padding:10px 16px; }
  .home-card-copy{ display:none; }
}



/* ============================================================
   2.12.0 — EYE COMFORT
   Pensado para sessões longas de estudo:
   - fundo cinza-escuro quente em vez de quase-preto (menos halação);
   - texto principal ~9.7:1 de contraste (não 16:1), secundário ~6:1;
   - uma só família sans-serif do sistema, tamanhos e entrelinhas estáveis;
   - acento âmbar dessaturado, estados ativos por tinta leve, sem blocos brilhantes;
   - sem gradientes, brilhos, texturas, blur, sombras ou movimento decorativo.
   ============================================================ */
:root{
  --bg:#1b1d20;
  --bg-panel:#212428;
  --bg-panel-2:#26292e;
  --hairline:rgba(255,255,255,.07);
  --ink:#c8c4bc;
  --ink-dim:#9a9ea4;
  --ink-faint:#858990;
  --gold:#cfa56b;
  --gold-dim:#8c7350;
  --gold-soft:rgba(207,165,107,.13);
  --pron:#b99a70;
  --green:#8db89a;
  --on-accent:#1b1d20;
  --tint:rgba(207,165,107,.13);
  --tint-border:rgba(207,165,107,.38);
  --font:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans", "Helvetica Neue", Arial, sans-serif;
}

/* ---- Base: superfície calma, uma família tipográfica ---- */
html, body{ background:var(--bg) !important; }
body{ font-family:var(--font); color:var(--ink); -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility; }
body::before{ display:none !important; }
.ui, input, button, select, .meta, .num, .translation, .empty, .count, .footnote,
.brand-name, .home-title, .connect-title, .sentence, .word, .ci-en, .ci-pron, .ci-tr,
.verb-pt, .verb-forms .vf, .connect-sub, .grammar-level-heading, .gi-topic{ font-family:var(--font); }
::selection{ background:rgba(207,165,107,.35); color:var(--ink); }
/* A Home (vitrine) fica fora desta regra: lá sombra e brilho são intencionais. */
*:not(.home-view *), *:not(.home-view *)::before, *:not(.home-view *)::after{ box-shadow:none !important; text-shadow:none !important; }
header, .bottom-nav, .settings-sheet{ backdrop-filter:none !important; -webkit-backdrop-filter:none !important; }

/* Sem movimento decorativo nas telas de estudo — só o que responde a um toque. */
.action-btn:hover, .connect-mode-btn:hover, .grammar-item:hover, .nav-btn:hover, .btn-primary:hover{ transform:none !important; }
.entry::before{ display:none; }

/* ---- Home: ver camada 2.14.0 (vitrine) no fim do arquivo ---- */

/* ---- Botões principais: âmbar sólido e fosco ---- */
.btn-primary, .practice-check-btn, .voice-check-btn, .connect-advance-btn, .sheet-btn-gold{
  background:var(--gold) !important; color:var(--on-accent) !important;
  border:none; border-radius:10px; font-weight:600; filter:none !important;
}
.btn-primary:hover, .practice-check-btn:hover, .voice-check-btn:hover{ background:#d8b07a !important; }

/* ---- Barras de progresso ---- */
.progress-track, .mini-progress-track{ background:var(--bg-panel-2); }
.progress-fill, .mini-progress-fill{ background:var(--gold) !important; }

/* ---- Cabeçalho e navegação ---- */
header{ background:var(--bg) !important; border-bottom:1px solid var(--hairline); }
.brand-name{ font-size:1.05rem; font-weight:600; letter-spacing:0; color:var(--ink); }
.mini-progress-label, .count{ color:var(--ink-faint); font-size:.78rem; }
.back-btn, .header-icon-btn{ color:var(--ink-dim); }
.bottom-nav{ background:var(--bg-panel) !important; border:1px solid var(--hairline); border-radius:16px; }
.nav-btn{ color:var(--ink-faint); font-size:.7rem; }
.nav-btn:hover{ color:var(--ink); }
.nav-btn.active{ color:var(--gold); background:var(--tint); }
.nav-btn.active::after{ display:none; }

/* ---- Estados ativos: tinta leve em vez de bloco sólido ---- */
.filter, .connect-chip, .connect-mode-btn, .grammar-level-tab, .font-btn{
  background:transparent; border:1px solid var(--hairline); color:var(--ink-dim);
}
.filter[aria-pressed="true"], .connect-chip.active, .connect-mode-btn.active,
.grammar-level-tab.active, .font-btn.active, .font-btn[aria-pressed="true"]{
  background:var(--tint) !important; color:var(--gold) !important;
  border-color:var(--tint-border) !important; font-weight:500;
}
.grammar-level-tab.active .glt-count{ color:var(--gold); opacity:.8; }
.action-btn, .gi-flag, .ci-learned-btn, .gi-play, .sheet-close-btn, .connect-back-top-btn{
  background:transparent; border:1px solid var(--hairline); color:var(--ink-dim);
}
.action-btn:hover, .gi-flag:hover, .ci-learned-btn:hover{ color:var(--ink); border-color:rgba(255,255,255,.16); }
.action-btn.active, .action-btn.playing, .action-btn.listening{ color:var(--gold); border-color:var(--tint-border); background:var(--tint); }
.action-btn.known-btn[aria-pressed="true"], .gi-flag[aria-pressed="true"], .ci-learned-btn[aria-pressed="true"]{
  background:rgba(141,184,154,.14) !important; color:var(--green) !important; border-color:rgba(141,184,154,.4) !important;
}
.gi-play{ color:var(--gold); }

/* ---- Busca ---- */
#search, .grammar-search-wrap input{ background:var(--bg-panel); border:1px solid var(--hairline); border-radius:10px; color:var(--ink); font-size:1rem; }
#search:focus, .grammar-search-wrap input:focus{ border-color:var(--tint-border); }
#search::placeholder, .grammar-search-wrap input::placeholder{ color:var(--ink-faint); }

/* ---- Leitura: Palavras ---- */
main, .grammar-main{ max-width:680px; }
.entry{ gap:16px; padding:24px 2px; border-bottom:1px solid var(--hairline); }
.entry.is-known{ opacity:.62; }
.head{ gap:10px; margin-bottom:10px; align-items:baseline; }
.num{ color:var(--ink-faint); font-size:.72rem; letter-spacing:0; }
#list .word{ font-size:calc(1.125rem * var(--scale)); font-weight:400; letter-spacing:0; color:var(--ink); }
.word-pron{ color:var(--pron); font-size:calc(.9rem * var(--scale)); letter-spacing:.02em; }
.sentence{ font-size:calc(1.125rem * var(--scale)); line-height:1.6; letter-spacing:0; color:var(--ink); margin-bottom:6px; }
.sentence-pron{ font-size:calc(.95rem * var(--scale)); line-height:1.5; letter-spacing:.02em; color:var(--pron); margin-bottom:8px; }
.translation{ font-size:calc(1rem * var(--scale)); line-height:1.55; color:var(--ink-dim); }
.action-btn{ width:36px; height:36px; }
.ipa-box{ background:var(--bg-panel); border:1px solid var(--hairline); border-radius:10px; padding:14px 16px; }
.ipa-label, .ipa-tag{ text-transform:none; letter-spacing:0; }
.ipa-tag{ color:var(--gold); font-size:.78rem; }
.practice-box, .voice-box{ background:var(--bg-panel); border:1px solid var(--hairline); border-radius:12px; }
.practice-input-inline, .voice-transcript{ background:var(--bg); border:1px solid var(--hairline); border-radius:8px; color:var(--ink); }
.practice-reveal-btn, .voice-stop-btn, .voice-retry-btn{ background:transparent; color:var(--ink-dim); border:1px solid var(--hairline); }
.practice-box-msg.ok, .voice-box-msg.ok{ color:var(--green); }
.diff-word.diff-bad{ color:var(--gold); font-weight:500; }

/* ---- Leitura: Frases ---- */
.connect-view{ max-width:680px; }
.connect-mode-btn{ height:42px; border-radius:10px; }
.connect-chip{ border-radius:999px; }
.connect-item{ padding:22px 2px; background:transparent; border:0; border-bottom:1px solid var(--hairline); border-radius:0; }
.ci-num{ color:var(--ink-faint); }
.ci-en{ font-size:calc(1.125rem * var(--connect-scale,1)); line-height:1.6; letter-spacing:0; color:var(--ink); }
.ci-en mark{ color:var(--gold); font-weight:500; }
.ci-pron{ color:var(--pron); font-size:calc(.95rem * var(--connect-scale,1)); line-height:1.5; letter-spacing:.02em; margin-top:6px; }
.ci-tr{ color:var(--ink-dim); font-size:calc(1rem * var(--connect-scale,1)); line-height:1.55; margin-top:6px; }
.verb-inf{ color:var(--gold); font-weight:500; }
.connect-card, .connect-card-top{ background:var(--bg-panel); }
.connect-progress{ text-transform:none; letter-spacing:0; }

/* ---- Gramática / Vocabulário / Tópicos ---- */
.grammar-level-tab{ border-radius:10px; }
.grammar-level-heading{ font-weight:600; letter-spacing:0; }
.grammar-item{ background:transparent; border:1px solid var(--hairline); border-radius:10px; }
.grammar-item:hover{ background:var(--bg-panel); border-color:rgba(255,255,255,.12); }
.gi-num{ background:var(--bg-panel-2); }
.gi-level-badge{ letter-spacing:0; }

/* ---- Folhas e modais ---- */
.settings-sheet{ background:var(--bg-panel) !important; border:1px solid var(--hairline); border-bottom:0; }
.sheet-handle{ background:rgba(255,255,255,.14); }
.video-modal-sheet{ background:var(--bg-panel); }
.toast{ background:var(--bg-panel-2); color:var(--ink); border:1px solid var(--hairline); }
.gi-flag svg{ fill:none; stroke:currentColor; stroke-width:2.4; stroke-linecap:round; stroke-linejoin:round; }
.home-progress-number, .home-progress-of, .home-progress-percent{ font-family:var(--font); }
.home-progress-of{ color:var(--ink-faint); }
#search:focus-visible, .grammar-search-wrap input:focus-visible, .start-mode-select:focus-visible{ outline:none !important; border-color:var(--gold) !important; }

/* ============================================================
   2.13.0 — Seletor da Home (lista própria)
   ============================================================ */
.mode-native{
  position:absolute !important; width:1px !important; height:1px !important;
  opacity:0 !important; pointer-events:none !important; clip:rect(0,0,0,0); overflow:hidden; margin:0; padding:0; border:0;
}
.mode-picker{ position:relative; width:100%; }
.home-actions{ position:relative; z-index:3; }
.mode-trigger{
  width:100%; min-height:60px; display:flex; align-items:center; gap:12px;
  padding:8px 14px 8px 12px; text-align:left; cursor:pointer;
  background:var(--bg); color:var(--ink);
  border:1px solid var(--hairline); border-radius:10px; font:inherit;
  transition:border-color .15s ease;
}
.mode-trigger:hover{ border-color:rgba(255,255,255,.16); }
.mode-picker.is-open .mode-trigger{ border-color:var(--tint-border); }
.mode-trigger:focus-visible{ outline:none !important; border-color:var(--gold); }
.mode-num{
  flex:none; width:28px; height:28px; border-radius:8px; display:flex; align-items:center; justify-content:center;
  background:var(--bg-panel-2); color:var(--ink-dim); font-size:.8rem; font-weight:600; font-variant-numeric:tabular-nums;
}
.mode-name{ flex:1; min-width:0; }
.mode-name{ font-size:1rem; font-weight:600; color:var(--ink); line-height:1.25; }
.mode-chevron{ flex:none; width:20px; height:20px; color:var(--ink-dim); transition:transform .18s ease; }
.mode-picker.is-open .mode-chevron{ transform:rotate(180deg); }

.mode-list{
  position:absolute; left:0; right:0; top:calc(100% + 6px); z-index:20;
  margin:0; padding:6px; list-style:none; overflow-y:auto; overscroll-behavior:contain;
  background:var(--bg-panel-2); border:1px solid rgba(255,255,255,.1); border-radius:12px;
  outline:none;
  animation:modeListIn .14s ease-out;
}
.mode-picker.opens-up .mode-list{ top:auto; bottom:calc(100% + 6px); animation-name:modeListInUp; }
.mode-list[hidden]{ display:none; }
@keyframes modeListIn{ from{ opacity:0; transform:translateY(-4px); } to{ opacity:1; transform:none; } }
@keyframes modeListInUp{ from{ opacity:0; transform:translateY(4px); } to{ opacity:1; transform:none; } }
.mode-option{
  display:flex; align-items:center; gap:12px; padding:10px 10px; border-radius:8px; cursor:pointer;
  color:var(--ink);
}
.mode-option + .mode-option{ margin-top:2px; }
.mode-option.is-active{ background:rgba(255,255,255,.05); }
.mode-list:focus-visible .mode-option.is-active{ box-shadow:inset 0 0 0 1px var(--tint-border) !important; }
.mode-option[aria-selected="true"] .mode-num{ background:var(--tint); color:var(--gold); }
.mode-option[aria-selected="true"] .mode-name{ color:var(--gold); }
.mode-check{ flex:none; width:18px; height:18px; color:var(--gold); visibility:hidden; }
.mode-option[aria-selected="true"] .mode-check{ visibility:visible; }

@media (max-height:620px){
  .mode-trigger{ min-height:48px; }
}

/* ============================================================
   2.13.0 — Carrossel de níveis (Gramática / Vocabulário / Tópicos)
   ============================================================ */
.level-carousel{ position:relative; margin-bottom:6px; }
.level-carousel .grammar-level-tabs{
  scroll-snap-type:x proximity;
  padding:2px 2px 12px;
}
.level-carousel .grammar-level-tab{ scroll-snap-align:start; }
/* Esmaecimento só no lado que ainda tem cards escondidos */
.level-carousel.has-prev.has-next .grammar-level-tabs{
  -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 48px,#000 calc(100% - 48px),transparent 100%);
          mask-image:linear-gradient(90deg,transparent 0,#000 48px,#000 calc(100% - 48px),transparent 100%);
}
.level-carousel.has-prev:not(.has-next) .grammar-level-tabs{
  -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 48px);
          mask-image:linear-gradient(90deg,transparent 0,#000 48px);
}
.level-carousel.has-next:not(.has-prev) .grammar-level-tabs{
  -webkit-mask-image:linear-gradient(90deg,#000 calc(100% - 48px),transparent 100%);
          mask-image:linear-gradient(90deg,#000 calc(100% - 48px),transparent 100%);
}
.level-carousel{ display:flex; align-items:center; gap:6px; }
.level-carousel .grammar-level-tabs{ flex:1; min-width:0; }
.carousel-arrow{
  flex:none; align-self:flex-start; margin-top:9px;
  width:32px; height:32px; border-radius:50%; display:flex; align-items:center; justify-content:center;
  background:var(--bg-panel-2); color:var(--ink); border:1px solid rgba(255,255,255,.12); cursor:pointer;
  transition:opacity .15s ease, color .15s ease, border-color .15s ease;
}
.carousel-arrow[hidden]{ display:none; }
.carousel-arrow:disabled{ opacity:.3; cursor:default; }
.carousel-arrow svg{ width:18px; height:18px; }
.carousel-arrow:not(:disabled):hover{ color:var(--gold); border-color:var(--tint-border); }
.mode-picker, .mode-list, .mode-option{ font-family:var(--font); }

@media (max-height:760px){
  .mode-option{ padding:7px 10px; }
}

/* ============================================================
   2.14.0 — HOME COMO VITRINE
   A Home vende o produto: profundidade, gradiente, textura, vidro e brilho.
   O elemento marcante é o espectro de frequência — barras que caem como a
   curva de Zipf: poucas palavras aparecem muito, a maioria quase nunca.
   Tudo aqui fica restrito a .home-view; as telas de estudo seguem "eye comfort".
   ============================================================ */
.home-view{
  --glass:rgba(30,28,40,.55);
  --glass-border:rgba(255,255,255,.11);
  --amber-1:#ffd79a; --amber-2:#f0a95a; --amber-3:#d9853b;
  --violet:#7b5cc9;
  position:relative; isolation:isolate;
  background:
    radial-gradient(120% 70% at 85% -10%, rgba(240,169,90,.28), transparent 60%),
    radial-gradient(90% 60% at -10% 105%, rgba(123,92,201,.30), transparent 62%),
    radial-gradient(60% 40% at 50% 55%, rgba(240,169,90,.06), transparent 70%),
    linear-gradient(180deg,#16131d 0%,#1a1820 55%,#141218 100%);
}
/* Textura: grão fino por cima de tudo, sem pegar clique */
.home-view::after{
  display:block !important; content:"" !important;
  position:absolute; inset:0; z-index:2; pointer-events:none;
  left:auto; bottom:auto; width:100%; height:100%; border-radius:0;
  opacity:.14; mix-blend-mode:overlay;
  background:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='180' height='180'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 1  0 0 0 0 1  0 0 0 0 1  0 0 0 .9 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
}
/* Brilho desfocado que "respira" atrás do cartão de ação */
.home-view::before{
  display:block !important; content:"" !important;
  position:absolute; z-index:0; pointer-events:none;
  width:min(90vw,620px); aspect-ratio:1; right:auto; left:50%; top:52%;
  transform:translate(-50%,-50%); border-radius:50%;
  background:radial-gradient(circle, rgba(240,169,90,.22), rgba(123,92,201,.12) 45%, transparent 70%);
  filter:blur(40px);
}
.home-inner{ position:relative; z-index:1; }

/* Espectro de frequência */
.home-spectrum{
  position:absolute; z-index:0; pointer-events:none;
  top:0; right:0; width:100%; height:min(21vh,210px);
  opacity:.62;
  -webkit-mask-image:linear-gradient(180deg,#000 0%,#000 30%,transparent 100%);
          mask-image:linear-gradient(180deg,#000 0%,#000 30%,transparent 100%);
  filter:drop-shadow(0 0 18px rgba(240,169,90,.35));
}
.home-spectrum rect{ transform-box:fill-box; transform-origin:bottom; }

/* Marca e título */
.home-brand-row .brand-name{ font-size:1.3rem; font-weight:700; letter-spacing:-.01em; color:#f4efe6; }
.home-eyebrow{
  display:inline-flex; align-items:center; gap:8px; width:auto;
  padding:6px 12px; margin-bottom:14px; border-radius:999px;
  font-size:.8rem; letter-spacing:.01em; text-transform:none; color:#e8d8c0;
  background:rgba(255,255,255,.06); border:1px solid rgba(255,255,255,.1);
  backdrop-filter:blur(10px); -webkit-backdrop-filter:blur(10px);
}
.home-eyebrow::before{ display:none !important; }
.home-title{
  font-size:min(clamp(2.2rem,7.6vw,4.6rem), 6.8vh);
  font-weight:800; line-height:1.02; letter-spacing:-.035em; color:#f6f1e8;
  text-shadow:0 2px 30px rgba(0,0,0,.45);
}
.home-title em{
  display:block; font-weight:800;
  background:linear-gradient(95deg,var(--amber-1) 0%,var(--amber-2) 45%,#e8835a 75%,#c678c9 110%) !important;
  -webkit-background-clip:text !important; background-clip:text !important;
  color:transparent !important; -webkit-text-fill-color:transparent;
  filter:drop-shadow(0 6px 24px rgba(240,169,90,.28));
  text-shadow:none;
}
.home-copy{ color:#b9b3aa; line-height:1.6; max-width:34em; }

/* Cartões de vidro */
.home-actions, .home-progress-card{
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02)) , var(--glass) !important;
  border:1px solid var(--glass-border) !important;
  border-radius:20px;
  backdrop-filter:blur(22px) saturate(140%); -webkit-backdrop-filter:blur(22px) saturate(140%);
  box-shadow:0 30px 70px -20px rgba(0,0,0,.6), 0 2px 0 rgba(255,255,255,.05) inset !important;
}
.home-progress-card::after{ display:none !important; }
.start-label{ color:#cfc6b8; font-size:.85rem; text-transform:none; letter-spacing:0; }
.home-card-eyebrow{ color:#cfc6b8; font-size:.85rem; text-transform:none; letter-spacing:0; }
.home-progress-number{ color:#f6f1e8; font-weight:700; }
.home-card-copy{ color:#9d978e; }
.home-footer{ color:#8b857d; }

/* Seletor dentro do vidro */
.home-view .mode-trigger{
  min-height:56px; background:rgba(12,10,16,.55); border:1px solid rgba(255,255,255,.1);
  border-radius:14px; box-shadow:inset 0 1px 0 rgba(255,255,255,.04) !important;
}
.home-view .mode-trigger:hover{ border-color:rgba(240,169,90,.4); }
.home-view .mode-picker.is-open .mode-trigger{ border-color:rgba(240,169,90,.55); }
.home-view .mode-name{ font-size:1.05rem; }
.home-view .mode-num{ background:rgba(240,169,90,.14); color:var(--amber-1); }
.home-view .mode-list{
  background:rgba(30,27,38,.97); border:1px solid rgba(255,255,255,.12); border-radius:16px;
  backdrop-filter:blur(24px) saturate(150%); -webkit-backdrop-filter:blur(24px) saturate(150%);
  box-shadow:0 24px 60px -12px rgba(0,0,0,.7) !important;
}
.home-view .mode-option{ padding:11px 12px; border-radius:10px; }
.home-view .mode-option.is-active{ background:rgba(255,255,255,.07); }
.home-view .mode-option[aria-selected="true"] .mode-name{ color:var(--amber-1); }

/* Botão principal com gradiente e brilho */
.home-view .btn-primary{
  background:linear-gradient(135deg,var(--amber-1) 0%,var(--amber-2) 50%,var(--amber-3) 100%) !important;
  color:#1d140a !important; font-weight:700; letter-spacing:.01em; border-radius:14px;
  box-shadow:0 14px 34px -8px rgba(240,169,90,.55), inset 0 1px 0 rgba(255,255,255,.45) !important;
  transition:transform .18s ease, box-shadow .18s ease, filter .18s ease;
}
.home-view .btn-primary:hover{ transform:translateY(-2px) !important; filter:brightness(1.05) !important; box-shadow:0 20px 44px -8px rgba(240,169,90,.65), inset 0 1px 0 rgba(255,255,255,.5) !important; }
.home-view .btn-primary:active{ transform:translateY(0) !important; }

/* Progresso com brilho */
.home-view .progress-track{ background:rgba(0,0,0,.35); height:8px; border-radius:999px; }
.home-view .progress-fill{
  background:linear-gradient(90deg,var(--violet),var(--amber-2),var(--amber-1)) !important;
  box-shadow:0 0 14px rgba(240,169,90,.5) !important; border-radius:999px;
}
.home-view .home-progress-percent{ color:var(--amber-1); }

/* Uma única entrada orquestrada: as barras sobem, depois o conteúdo aparece */
@media (prefers-reduced-motion:no-preference){
  .home-spectrum rect{ animation:specRise .9s cubic-bezier(.2,.8,.2,1) both; animation-delay:calc(var(--i) * 14ms); }
  .home-inner > *{ animation:homeIn .6s cubic-bezier(.2,.8,.2,1) both !important; }
  .home-inner > :nth-child(2){ animation-delay:.08s !important; }
  .home-inner > :nth-child(3){ animation-delay:.14s !important; }
  .home-inner > :nth-child(4){ animation-delay:.2s !important; }
  .home-inner > :nth-child(5){ animation-delay:.26s !important; }
  .home-inner > :nth-child(6){ animation-delay:.32s !important; }
}
@keyframes specRise{ from{ transform:scaleY(.05); opacity:0; } to{ transform:scaleY(1); opacity:1; } }
@keyframes homeIn{ from{ opacity:0; transform:translateY(12px); } to{ opacity:1; transform:none; } }

@media (min-width:900px){
  .home-spectrum{ height:min(30vh,280px); opacity:.6; }
}

@media (max-height:760px){
  .home-eyebrow{ padding:4px 10px; margin-bottom:10px; font-size:.75rem; }
  .home-view .mode-trigger{ min-height:48px; }
  .home-actions, .home-progress-card{ border-radius:16px; }
}
@media (max-height:680px){
  .home-eyebrow{ display:none; }
}
@media (min-width:900px){
  .home-spectrum{ width:62%; }
}
@media (max-height:700px){ .home-spectrum{ height:13vh; opacity:.5; } }
.home-brand-row::after{ display:none !important; content:none !important; }