:root{
  --bg:#0d1117; --bg2:#161b22; --card:#1a2029; --line:#2b3440;
  --tx:#e6edf3; --tx2:#9aa7b4; --accent:#4f9dff; --ok:#2fd07a;
  --warn:#ffb020; --bad:#ff5c5c; --radius:16px;
}
*{box-sizing:border-box}
/* El atributo hidden debe ganar siempre a los display de abajo */
[hidden]{display:none!important}
body{
  margin:0; font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Ubuntu,sans-serif;
  background:radial-gradient(1200px 600px at 50% -10%,#17263d 0%,var(--bg) 60%);
  color:var(--tx); min-height:100vh; padding-bottom:40px;
}

/* ---------- topbar ---------- */
.topbar{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;max-width:820px;margin:0 auto}
.brand{display:flex;gap:12px;align-items:center}
.logo{font-size:32px}
.topbar h1{font-size:20px;margin:0;letter-spacing:-.3px}
.tagline{margin:2px 0 0;font-size:12px;color:var(--tx2)}
.top-actions{display:flex;gap:8px}
.icon-btn{background:var(--bg2);border:1px solid var(--line);color:var(--tx);width:38px;height:38px;
  border-radius:10px;font-size:17px;cursor:pointer;transition:.15s}
.icon-btn:hover{border-color:var(--accent);transform:translateY(-1px)}

/* ---------- progreso ---------- */
.progress-wrap{max-width:820px;margin:0 auto 18px;padding:0 20px}
.progress-bar{height:8px;background:var(--bg2);border-radius:99px;overflow:hidden;border:1px solid var(--line)}
.progress-fill{height:100%;width:0;border-radius:99px;
  background:linear-gradient(90deg,var(--accent),var(--ok));transition:width .5s ease}
.progress-meta{display:flex;justify-content:space-between;font-size:12px;color:var(--tx2);margin-top:6px}

/* ---------- tarjeta ---------- */
#app{max-width:820px;margin:0 auto;padding:0 20px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;box-shadow:0 18px 40px rgba(0,0,0,.35)}
.card.warn{border-color:var(--warn);text-align:center}
.card.warn h2{font-size:18px;margin-top:0}
.card-head{display:flex;justify-content:space-between;margin-bottom:16px}
.badge{background:#22303f;border:1px solid var(--line);color:var(--tx2);
  padding:4px 10px;border-radius:99px;font-size:11px;text-transform:uppercase;letter-spacing:.6px}
.badge.streak{color:var(--warn)}

.phrase-en{font-size:30px;line-height:1.28;font-weight:650;margin:0 0 10px;letter-spacing:-.5px}
.phrase-es{font-size:15px;color:var(--tx2);margin:0 0 18px;font-style:italic}

.word-feedback{display:flex;flex-wrap:wrap;gap:7px;margin:0 0 18px;padding:12px;
  background:#12171f;border-radius:12px;border:1px solid var(--line)}
.w{padding:3px 9px;border-radius:7px;font-size:14px;font-weight:600}
.w.ok{background:rgba(47,208,122,.15);color:var(--ok)}
.w.mid{background:rgba(255,176,32,.15);color:var(--warn)}
.w.bad{background:rgba(255,92,92,.15);color:var(--bad);text-decoration:underline wavy var(--bad) 1.5px}

/* ---------- score ---------- */
.score-zone{display:flex;gap:20px;align-items:center;margin-bottom:22px;flex-wrap:wrap}
.score-ring{--pct:0;width:104px;height:104px;border-radius:50%;flex-shrink:0;display:grid;place-items:center;
  background:conic-gradient(var(--ring,var(--accent)) calc(var(--pct)*1%),#232c38 0)}
.score-inner{width:82px;height:82px;border-radius:50%;background:var(--card);display:grid;place-items:center;text-align:center}
#score-value{font-size:23px;font-weight:750;display:block}
.score-inner small{font-size:9px;color:var(--tx2);text-transform:uppercase;letter-spacing:.5px}
.score-side{flex:1;min-width:210px}
.status-msg{margin:0 0 6px;font-size:15px;font-weight:600}
.status-msg.ok{color:var(--ok)} .status-msg.bad{color:var(--bad)} .status-msg.rec{color:var(--accent)}
.heard-line{margin:0 0 6px;font-size:13px;color:var(--tx2)}
.heard-line b{color:var(--tx)}
.need-line{margin:0;font-size:12px;color:var(--tx2)}
.hits-dots{display:flex;gap:6px;margin-top:9px}
.dot{width:11px;height:11px;border-radius:50%;background:#2b3440;border:1px solid var(--line)}
.dot.on{background:var(--ok);border-color:var(--ok);box-shadow:0 0 10px rgba(47,208,122,.5)}

/* ---------- botones ---------- */
.controls{display:flex;gap:10px;justify-content:center;align-items:center;margin-bottom:12px;flex-wrap:wrap}
.controls.secondary{margin-bottom:4px}
.btn{border:1px solid var(--line);background:var(--bg2);color:var(--tx);padding:12px 20px;
  border-radius:12px;font-size:14px;font-weight:600;cursor:pointer;transition:.15s;font-family:inherit}
.btn:hover:not(:disabled){border-color:var(--accent);transform:translateY(-1px)}
.btn:disabled{opacity:.4;cursor:not-allowed}
.btn.small{padding:9px 16px;font-size:13px}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#04101f}
.btn.primary:disabled{background:var(--bg2);border-color:var(--line);color:var(--tx2)}
.btn.danger{color:var(--bad);border-color:#4a2a2a}
.btn.mic{background:linear-gradient(135deg,#4f9dff,#7b61ff);border:none;color:#fff;
  padding:16px 36px;font-size:16px;border-radius:99px;box-shadow:0 8px 24px rgba(79,157,255,.35)}
.btn.mic.recording{background:linear-gradient(135deg,#ff5c5c,#ff8a3d);animation:pulse 1.1s infinite;
  box-shadow:0 8px 24px rgba(255,92,92,.45)}
@keyframes pulse{0%,100%{transform:scale(1)}50%{transform:scale(1.055)}}
.lock-note{text-align:center;font-size:12px;color:var(--tx2);margin:12px 0 0}
.lock-note.unlocked{color:var(--ok)}

/* ---------- paneles ---------- */
.panel{position:fixed;inset:0;background:rgba(0,0,0,.65);z-index:50;display:grid;place-items:center;padding:20px;
  backdrop-filter:blur(3px)}
.panel-inner{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;width:100%;max-width:520px;max-height:86vh;overflow-y:auto}
.panel-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}
.panel-head h2{margin:0;font-size:19px}
.panel-inner h3{font-size:14px;color:var(--tx2);text-transform:uppercase;letter-spacing:.7px;margin:22px 0 10px}
.field{display:block;margin-bottom:20px;font-size:14px}
.field>span{display:block;margin-bottom:8px;color:var(--tx2)}
.field.row{display:flex;align-items:center;gap:10px}
.field.row>span{margin:0}
.field b{color:var(--accent)}
input[type=range]{width:100%;accent-color:var(--accent)}
input[type=checkbox]{width:18px;height:18px;accent-color:var(--accent)}
select{width:100%;padding:10px;background:var(--bg2);border:1px solid var(--line);
  color:var(--tx);border-radius:10px;font-size:14px;font-family:inherit}
.panel-actions{display:flex;gap:10px;flex-wrap:wrap;border-top:1px solid var(--line);padding-top:18px}

.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:12px}
.stat{background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:14px;text-align:center}
.stat b{display:block;font-size:24px;color:var(--accent)}
.stat span{font-size:11px;color:var(--tx2);text-transform:uppercase;letter-spacing:.5px}
.cat-stats{display:flex;flex-direction:column;gap:8px}
.cat-row{display:flex;align-items:center;gap:10px;font-size:13px}
.cat-row .name{width:110px;color:var(--tx2);text-transform:capitalize;flex-shrink:0}
.cat-row .bar{flex:1;height:7px;background:var(--bg2);border-radius:99px;overflow:hidden}
.cat-row .bar i{display:block;height:100%;background:var(--ok);border-radius:99px}
.cat-row .num{width:56px;text-align:right;color:var(--tx2);font-size:12px}
.hard-list{padding-left:20px;font-size:13px;color:var(--tx2);margin:0}
.hard-list li{margin-bottom:7px}
.hard-list b{color:var(--tx);font-weight:600}

.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:var(--bg2);
  border:1px solid var(--accent);padding:12px 22px;border-radius:12px;font-size:14px;z-index:80;
  box-shadow:0 10px 30px rgba(0,0,0,.5)}

@media(max-width:520px){
  .phrase-en{font-size:23px}
  .card{padding:18px}
  .btn.mic{width:100%}
  .controls{gap:8px}
}

/* ---------- palabras clickeables + popup ---------- */
.phrase-en .tw{cursor:pointer;border-radius:5px;padding:0;transition:.12s;
  border-bottom:2px dotted transparent}
.phrase-en .tw:hover{background:rgba(79,157,255,.16);border-bottom-color:var(--accent);
  box-shadow:0 0 0 3px rgba(79,157,255,.16)}
.phrase-en .tw.active{background:rgba(79,157,255,.3);border-bottom-color:var(--accent);
  box-shadow:0 0 0 3px rgba(79,157,255,.3)}
.tap-hint{font-size:11px;color:var(--tx2);margin:-8px 0 18px;opacity:.75}

.word-popup{position:absolute;z-index:70;width:max-content;max-width:min(290px,calc(100vw - 32px));
  background:#0f141b;border:1px solid var(--accent);border-radius:12px;padding:12px 14px;
  box-shadow:0 14px 34px rgba(0,0,0,.6)}
.wp-head{display:flex;align-items:center;gap:10px;justify-content:space-between;margin-bottom:6px}
.wp-head b{font-size:17px;color:var(--tx)}
.wp-say{background:var(--bg2);border:1px solid var(--line);color:var(--tx);
  width:30px;height:30px;border-radius:8px;cursor:pointer;font-size:14px;flex-shrink:0}
.wp-say:hover{border-color:var(--accent)}
.wp-pron{margin:0 0 6px;font-size:14px;color:var(--accent);font-weight:650;letter-spacing:.3px}
.wp-mean{margin:0;font-size:13px;color:var(--tx2);line-height:1.45}

/* Selector de qué practicar: siempre visible bajo la barra de progreso */
.practice-select{width:100%;margin-top:10px;padding:9px 12px;font:inherit;font-size:13px;
  color:var(--tx);background:var(--bg2);border:1px solid var(--line);border-radius:10px;cursor:pointer}
.practice-select:hover,.practice-select:focus{border-color:var(--accent);outline:none}