/* Dark-only cross-skill tool. Primary accent = brand MAROON (general LMS tool, not subject-scoped);
   part-tags use maroon/warning/violet as categorical coding. Fixed canonical-dark values. */
:root{
  --bg:#111114;
  --bg2:#19191D;
  --bg3:#202025;
  --text:#F7F7F8;
  --text2:#B7B7C0;
  --text3:#85858F;
  --border:#303037;
  --border2:#3A3A42;
  --red:#B6495B;
  --red2:#8A2432;
  --gold:#D69A43;
  --green:#55B982;
  --blue:#6F9CC8;
  --violet:#A18AE0;
  --red-dark:#C65A6B;
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font-body);min-height:100vh}
a{color:inherit}
.sb-topbar{height:64px;border-bottom:1px solid var(--border);background:rgba(17,17,20,.94);display:flex;align-items:center;justify-content:space-between;padding:0 28px;position:sticky;top:0;z-index:20;backdrop-filter:blur(14px)}
.sb-brand{display:flex;align-items:center;gap:12px;text-decoration:none;font-family:var(--font-heading);font-weight:800;letter-spacing:1.8px;font-size:18px}
.sb-brand img{height:36px;background:rgba(255,255,255,.14);padding:6px 10px;border-radius:6px}
.sb-toplinks{display:flex;gap:8px;align-items:center}
.sb-toplinks a{font-size:11px;font-weight:900;letter-spacing:.8px;text-transform:uppercase;color:var(--text2);text-decoration:none;border:1px solid var(--border2);padding:8px 12px}
.sb-toplinks a:hover{border-color:var(--red);color:var(--text)}
.sb-shell{width:min(1180px,calc(100% - 32px));margin:0 auto;padding:38px 0 56px}
.sb-hero{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:28px;align-items:end;border-bottom:1px solid var(--border);padding:34px 0 30px;margin-bottom:22px}
.sb-eyebrow{margin:0 0 8px;font-size:10px;font-weight:900;letter-spacing:2.5px;text-transform:uppercase;color:var(--gold)}
h1,h2,h3{font-family:var(--font-heading);font-weight:800;font-weight:400;letter-spacing:.6px;margin:0}
h1{font-size:76px;line-height:.9}
h2{font-size:34px;line-height:1}
h3{font-size:24px;line-height:1.05}
.sb-sub{max-width:660px;color:var(--text2);line-height:1.7;font-size:15px;margin:18px 0 0}
.sb-hero-actions{display:flex;gap:10px;flex-wrap:wrap;justify-content:flex-end}
.sb-btn{display:inline-flex;align-items:center;justify-content:center;min-height:40px;padding:10px 16px;text-decoration:none;border:1px solid var(--border2);font-family:var(--font-heading);font-weight:800;font-size:14px;letter-spacing:1.8px}
.sb-btn.red{background:var(--red);border-color:var(--red);color:#fff}
.sb-btn.ghost{color:var(--text2)}
.sb-btn:hover{filter:brightness(1.12)}
.sb-tabs{display:flex;gap:1px;background:var(--border);border:1px solid var(--border);margin-bottom:28px;overflow-x:auto}
.sb-tab{border:0;background:var(--bg2);color:var(--text2);min-height:44px;padding:0 18px;font-family:var(--font-heading);font-weight:800;font-size:13px;letter-spacing:1.6px;cursor:pointer;white-space:nowrap}
.sb-tab.active{background:var(--red);color:#fff}
.sb-section{display:none;margin-bottom:34px}
.sb-section.active{display:block}
.sb-section-head{display:flex;justify-content:space-between;gap:18px;align-items:end;margin-bottom:16px}
.sb-section-head p:not(.sb-eyebrow){max-width:650px;color:var(--text2);font-size:13px;line-height:1.65;margin:8px 0 0}
.sb-dash{background:var(--bg2);border:1px solid var(--border);padding:22px 22px 18px;margin-bottom:28px}
.sb-dash-head{display:flex;justify-content:space-between;gap:18px;align-items:end;margin-bottom:18px;flex-wrap:wrap}
.sb-dash-hint{margin:0;max-width:420px;color:var(--text3);font-size:12px;line-height:1.55;text-align:right}
.sb-dash-stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;background:var(--border);border:1px solid var(--border)}
.sb-dash-stat{background:var(--bg3);padding:16px 14px;min-height:88px}
.sb-dash-stat-num{font-family:var(--font-heading);font-size:36px;line-height:1;letter-spacing:.5px;color:var(--text)}
.sb-dash-stat-label{margin-top:8px;font-size:10px;font-weight:900;letter-spacing:1.6px;text-transform:uppercase;color:var(--text3)}
.sb-dash-elsewhere{margin:18px 0 0;color:var(--text3);font-size:12px;line-height:1.6}
.sb-dash-elsewhere a{color:var(--gold);text-decoration:none;border-bottom:1px solid rgba(214,154,67,.35)}
.sb-dash-elsewhere a:hover{border-bottom-color:var(--gold)}
.sb-card-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;background:var(--border);border:1px solid var(--border)}
.sb-card-grid--5{grid-template-columns:repeat(5,minmax(0,1fr))}
.sb-tool-card{background:var(--bg2);padding:20px;text-decoration:none;min-height:214px;display:flex;flex-direction:column;gap:12px;transition:background .15s,border-color .15s}
.sb-tool-card:hover{background:var(--bg3)}
.sb-tool-card p{font-size:13px;line-height:1.65;color:var(--text2);margin:0}
.sb-card-tag{align-self:flex-start;font-size:9px;font-weight:900;text-transform:uppercase;letter-spacing:1.6px;border:1px solid var(--border2);padding:5px 8px;color:var(--text2)}
.sb-card-tag.green{color:var(--green);border-color:rgba(85,185,130,.45)}
.sb-card-tag.violet{color:var(--violet);border-color:rgba(161,138,224,.45)}
.sb-card-tag.gold{color:var(--gold);border-color:rgba(214,154,67,.55)}
.sb-card-tag.blue{color:var(--blue);border-color:rgba(111,156,200,.45)}
.sb-card-action{margin-top:auto;font-family:var(--font-heading);font-weight:800;font-size:13px;letter-spacing:1.7px;color:var(--red)}
.sb-card-activity{font-size:11px;font-weight:700;color:var(--gold);letter-spacing:.3px}
.sb-card-activity[hidden]{display:none}
.sample-card--soon{opacity:.92;border-style:dashed}
.sample-pill--soon{color:var(--text3);border-color:var(--border2)}
.sample-soon-note{margin:0;font-size:12px;line-height:1.55;color:var(--text3)}
.qb-sample-soon{color:var(--text3);font-size:13px;line-height:1.55}
.para-topic-row,.sample-controls{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}
.para-topic{background:var(--bg2);border:1px solid var(--border2);color:var(--text2);font-size:11px;font-weight:900;letter-spacing:.7px;text-transform:uppercase;padding:9px 12px;cursor:pointer}
.para-topic.active{border-color:var(--red);color:#fff;background:rgba(182,73,91,.14)}
.sb-loading,.sb-empty{padding:22px 0;color:var(--text3);font-size:13px}
.sb-empty{background:var(--bg2);border:1px solid var(--border);border-left:3px solid var(--gold);padding:18px;color:var(--text2)}
.para-card{background:var(--bg2);border:1px solid var(--border);border-left:3px solid var(--red);padding:22px;max-width:820px}
.para-context-badge{display:inline-flex;border:1px solid var(--border2);color:var(--gold);font-size:10px;font-weight:900;letter-spacing:1.4px;text-transform:uppercase;padding:5px 9px;margin-bottom:16px}
.para-orig-label{display:block;font-size:10px;font-weight:900;letter-spacing:2px;text-transform:uppercase;color:var(--text3);margin:0 0 8px}
.para-orig-text{font-size:22px;line-height:1.35;margin-bottom:18px}
.para-input{width:100%;min-height:118px;background:#080808;border:1px solid var(--border2);color:var(--text);font-family:var(--font-body);font-size:15px;line-height:1.7;padding:14px;resize:vertical}
.para-input:focus,.sample-controls input:focus,.sample-controls select:focus{outline:none;border-color:var(--red)}
.para-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}
.para-btn,.para-ai-btn{border:1px solid var(--border2);background:transparent;color:var(--text2);font-family:var(--font-heading);font-weight:800;font-size:13px;letter-spacing:1.6px;padding:10px 16px;cursor:pointer}
.para-btn.primary,.para-ai-btn{background:var(--red);border-color:var(--red);color:#fff}
.para-btn:disabled,.para-ai-btn:disabled{opacity:.55;cursor:wait}
.para-model-reveal{display:none;margin-top:18px;border-top:1px solid var(--border);padding-top:16px}
.para-model-reveal.show{display:block}
.para-model-label{font-size:10px;font-weight:900;letter-spacing:2px;text-transform:uppercase;color:var(--green);margin-bottom:10px}
.para-model-item{font-size:14px;color:var(--text2);line-height:1.7;padding:10px 12px;background:var(--bg3);border-left:2px solid var(--green);margin-bottom:7px}
.para-ai-row{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-top:14px}
.para-quota-hint{font-size:11px;color:var(--text3)}
.para-ai-result{display:none;margin-top:12px;background:#080808;border:1px solid var(--border);padding:13px 14px;color:var(--text2);font-size:13px;line-height:1.7}
.para-ai-result.show{display:block}
.sample-controls input,.sample-controls select{background:var(--bg2);border:1px solid var(--border2);color:var(--text);min-height:42px;padding:0 12px;font-family:var(--font-body)}
.sample-controls input{flex:1;min-width:240px}
.sample-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.sample-card{background:var(--bg2);border:1px solid var(--border);padding:18px}
.sample-meta{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:10px}
.sample-pill{font-size:9px;font-weight:900;letter-spacing:1.4px;text-transform:uppercase;border:1px solid var(--border2);color:var(--gold);padding:4px 7px}
.sample-prompt{font-size:15px;line-height:1.6;color:var(--text);margin:0 0 12px}
.sample-answer{display:none;background:#080808;border:1px solid var(--border);padding:14px;color:var(--text2);font-size:13px;line-height:1.8;white-space:pre-wrap;margin-top:12px}
.sample-card.open .sample-answer{display:block}
.sample-toggle{border:1px solid var(--red);background:var(--red);color:#fff;font-family:var(--font-heading);font-weight:800;font-size:13px;letter-spacing:1.6px;padding:9px 14px;cursor:pointer}
/* ── Speaking sub-tabs (Foundations/Shadowing/Question Bank nested under the Speaking tab) ── */
.sb-subtabs{display:flex;gap:1px;background:var(--border);border:1px solid var(--border);margin-bottom:20px;overflow-x:auto}
.sb-subtab{border:0;background:var(--bg2);color:var(--text2);min-height:38px;padding:0 16px;font-family:var(--font-heading);font-weight:800;font-size:12px;letter-spacing:1.4px;cursor:pointer;white-space:nowrap}
.sb-subtab.active{background:var(--red);color:#fff}
.sb-subsection{display:none}
.sb-subsection.active{display:block}

/* ── Question Bank (ported from Speaking_Practice_Hub.html) ── */
.page-sub-note{max-width:650px;color:var(--text2);font-size:13px;line-height:1.65;margin:0 0 16px}
.filter-row{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:16px}
.filter-chip{font-size:11px;font-weight:700;letter-spacing:.5px;text-transform:uppercase;padding:5px 12px;border:1px solid var(--border2);color:var(--text2);background:transparent;cursor:pointer;font-family:var(--font-body);transition:all .12s}
.filter-chip:hover{border-color:var(--red);color:var(--text)}
.filter-chip.active{background:var(--red);border-color:var(--red);color:#fff}
.qbank-list{display:flex;flex-direction:column;gap:8px}
.qb-item{background:var(--bg2);border:1px solid var(--border);border-left:3px solid transparent;padding:14px 16px;transition:border-color .15s}
.qb-item:hover{border-left-color:var(--red)}
.qb-meta{font-size:10px;font-weight:900;letter-spacing:1.5px;text-transform:uppercase;color:var(--text2);margin-bottom:5px;display:flex;align-items:center;gap:8px}
.qb-part-tag{padding:2px 8px;font-size:9px;font-weight:700;letter-spacing:1px}
.qb-part-tag.p1{background:rgba(182,73,91,.15);color:var(--red)}
.qb-part-tag.p2{background:rgba(214,154,67,.15);color:var(--gold)}
.qb-part-tag.p3{background:rgba(161,138,224,.12);color:var(--violet)}
.qb-q{font-size:14px;font-weight:700;color:var(--text);line-height:1.5;margin-bottom:6px}
.qb-bn{font-size:12px;color:var(--text2);font-weight:300;margin-bottom:8px}
.qb-bullets{font-size:12px;color:var(--text2);margin:6px 0;padding-left:16px}
.qb-bullets li{margin:2px 0}
.qb-actions{display:flex;gap:6px;margin-top:8px;flex-wrap:wrap}
.qb-btn{font-family:var(--font-body);font-size:11px;font-weight:700;letter-spacing:.5px;padding:5px 12px;border:1px solid var(--border2);background:transparent;color:var(--text2);cursor:pointer;transition:all .12s}
.qb-btn:hover{border-color:var(--red);color:var(--text)}
.qb-btn.practice{background:var(--red);border-color:var(--red);color:#fff}
.qb-report{font-size:10px;color:var(--text3);background:transparent;border:1px solid var(--border2);padding:4px 8px;cursor:pointer;margin-left:6px}
.qb-sample{display:none;margin-top:10px;padding:12px 14px;background:#080808;border-left:2px solid var(--gold);font-size:13px;line-height:1.6;color:var(--text2);font-style:italic}
.qb-sample.show{display:block}
.qb-sample-label{font-size:10px;font-weight:900;letter-spacing:1.5px;text-transform:uppercase;color:var(--gold);margin-bottom:6px;font-style:normal}
.qb-sample-regen{margin-top:10px;padding:5px 12px;background:transparent;border:1px solid var(--border2);color:var(--text2);font-size:10px;font-weight:700;letter-spacing:.5px;cursor:pointer;font-family:var(--font-body)}
.qb-sample-regen:hover{border-color:var(--gold);color:var(--gold)}
.qb-sample-regen:disabled{opacity:.4;cursor:wait}
.spk-btn{display:inline-flex;align-items:center;justify-content:center;width:24px;height:24px;border:1px solid var(--border);background:transparent;color:var(--text2);cursor:pointer;font-size:11px;flex-shrink:0;vertical-align:middle;margin-left:6px;transition:all .12s}
.spk-btn:hover{border-color:var(--red);color:var(--red)}
.spk-btn.speaking{background:var(--red);color:#fff;border-color:var(--red)}
.lang-toggle{display:inline-flex;align-items:center;gap:0;border:1px solid var(--border2);overflow:hidden;margin-left:auto}
.lang-toggle button{font-family:var(--font-heading);font-weight:800;font-size:11px;letter-spacing:1.5px;padding:5px 11px;background:transparent;border:none;color:var(--text2);cursor:pointer;transition:all .12s}
.lang-toggle button.active{background:var(--red);color:#fff}
.lang-toggle button:not(.active):hover{color:var(--text)}
body.bn-hidden .qb-bn,body.bn-hidden [data-bn-hint]{display:none !important}

/* ── Shadowing (ported from Speaking_Practice_Hub.html) ── */
.shadow-part-row{display:grid;grid-template-columns:1fr 1fr 1fr;gap:1px;background:var(--border);margin-bottom:20px}
.shadow-part-btn{background:var(--bg2);padding:18px 12px;text-align:center;cursor:pointer;transition:background .12s;border:2px solid transparent}
.shadow-part-btn:hover{background:var(--bg3)}
.shadow-part-btn.active{background:rgba(182,73,91,.07);border-color:var(--red)}
.shadow-part-num{font-family:var(--font-heading);font-weight:800;font-size:36px;color:var(--text);line-height:1}
.shadow-part-btn.active .shadow-part-num{color:var(--red)}
.shadow-part-label{font-size:11px;color:var(--text2);letter-spacing:.5px}
.shadow-q-box{background:var(--bg2);border:1px solid var(--border);border-left:3px solid var(--red);padding:16px;margin-bottom:14px}
.shadow-q-label{font-size:10px;font-weight:900;letter-spacing:2px;text-transform:uppercase;color:var(--red);margin-bottom:8px}
.shadow-q-text{font-size:15px;color:var(--text);line-height:1.6;margin-bottom:6px}
.shadow-model-box{background:#0d0d0d;border:1px solid var(--border);border-left:3px solid var(--gold);padding:16px;margin-bottom:16px}
.shadow-model-label{font-size:10px;font-weight:900;letter-spacing:2px;text-transform:uppercase;color:var(--gold);margin-bottom:10px;display:flex;align-items:center;justify-content:space-between}
.shadow-model-text{font-size:14px;color:var(--text2);line-height:1.8}
.shadow-diff-grid{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--border);margin-top:16px}
.shadow-diff-panel{background:var(--bg2);padding:16px}
.shadow-diff-title{font-size:10px;font-weight:900;letter-spacing:2px;text-transform:uppercase;margin-bottom:10px}
.shadow-diff-title.model{color:var(--gold)}
.shadow-diff-title.yours{color:var(--red)}
.shadow-diff-body{font-size:13px;line-height:1.9;color:var(--text2)}
.diff-match{color:#55B982;font-weight:700}
.diff-miss{color:#E06B6B;opacity:.85}
.shadow-score-bar{display:flex;align-items:center;gap:12px;margin-top:16px;padding:14px 16px;background:var(--bg2);border:1px solid var(--border)}
.shadow-score-num{font-family:var(--font-heading);font-weight:800;font-size:42px;letter-spacing:2px;line-height:1}
.shadow-score-num.high{color:#55B982}
.shadow-score-num.mid{color:var(--gold)}
.shadow-score-num.low{color:#E06B6B}
.shadow-score-label{font-size:12px;color:var(--text2);line-height:1.5}
.shadow-score-label strong{color:var(--text)}
@media (max-width:900px){.shadow-diff-grid{grid-template-columns:1fr}}

/* ── Recorder widget (shared markup between Shadowing here and, historically, graded
   screens in Speaking_Practice_Hub.html — this copy is Shadowing-only, no shared JS) ── */
@keyframes pulse-ring{0%{box-shadow:0 0 0 0 rgba(182,73,91,.5)}70%{box-shadow:0 0 0 16px rgba(182,73,91,0)}100%{box-shadow:0 0 0 0 rgba(182,73,91,0)}}
.recorder-wrap{background:var(--bg2);border:1px solid var(--border);border-top:3px solid var(--red);padding:28px;text-align:center;margin-bottom:16px;width:100%}
.mic-btn{width:76px;height:76px;border-radius:50%;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:26px;margin:0 auto 12px;transition:all .2s}
.mic-btn.idle{background:var(--red);color:#fff}
.mic-btn.recording{background:#1a0505;color:var(--red);border:3px solid var(--red);animation:pulse-ring 1.2s infinite}
.rec-status{font-family:var(--font-heading);font-weight:800;font-size:12px;letter-spacing:2px;color:var(--text2);margin-bottom:20px}
.rec-status.live{color:var(--red)}
.rec-timer{font-family:var(--font-heading);font-weight:800;font-size:30px;letter-spacing:3px;color:var(--text);margin-bottom:4px}
.rec-bar{height:3px;background:#222;margin:0 auto 20px;width:220px;overflow:hidden}
.rec-bar-fill{height:100%;background:var(--red);width:0%;transition:width .1s linear}
.rec-btns{display:flex;gap:8px;justify-content:center;flex-wrap:wrap}
.rec-btn{font-family:var(--font-heading);font-weight:800;font-size:13px;letter-spacing:2px;padding:11px 24px;border:none;cursor:pointer;transition:all .15s}
.rec-btn.red{background:var(--red);color:#fff}
.rec-btn.red:hover{background:var(--red-dark)}
.rec-btn.ghost{background:transparent;border:1px solid var(--border2);color:var(--text2)}
.rec-btn.ghost:hover{border-color:var(--border2);color:var(--text)}
.live-transcript{margin-top:14px;padding:10px 14px;background:#0a0a0a;border:1px dashed var(--border2);font-size:13px;color:var(--text2);min-height:40px;text-align:left;font-style:italic}
.live-transcript:empty::before{content:'Live transcript will appear here as you speak...';color:var(--text3);font-style:italic}
@media (max-width:900px){
  .recorder-wrap{padding:16px}
  .mic-btn{width:64px;height:64px;font-size:22px;margin-bottom:10px}
  .rec-timer{font-size:26px}
  .rec-bar{width:80%;max-width:200px}
  .rec-btn{font-size:12px;letter-spacing:1.5px;padding:10px 16px}
  .rec-btns{gap:6px}
  .live-transcript{font-size:12px;padding:8px 10px}
}

/* ── Foundations (ported from Speaking_Practice_Hub.html) ── */
@keyframes fadeUp{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}
.sec-hdr{display:flex;align-items:stretch;margin:24px 0 14px;border-left:4px solid var(--red)}
.sec-letter{background:var(--red);color:#fff;font-family:var(--font-heading);font-weight:800;font-size:28px;padding:4px 14px;line-height:1;display:flex;align-items:center;letter-spacing:2px}
.sec-info{background:var(--bg2);border:1px solid var(--border);border-left:none;padding:6px 14px;flex:1}
.sec-info h2{font-family:var(--font-heading);font-weight:800;font-size:18px;letter-spacing:2px;color:var(--text);line-height:1.2}
.sec-info p{font-size:11px;color:var(--text2);margin-top:2px}
.tab-row{display:flex;gap:0;border-bottom:1px solid var(--border);margin-bottom:20px;flex-wrap:wrap}
.tab-btn{font-family:var(--font-heading);font-weight:800;font-size:13px;letter-spacing:2px;padding:10px 18px;border:none;background:transparent;color:var(--text2);cursor:pointer;border-bottom:3px solid transparent;transition:all .15s;margin-bottom:-1px}
.tab-btn:hover{color:var(--text)}
.tab-btn.active{color:var(--text);border-bottom-color:var(--red)}
.tab-panel{display:none}
.tab-panel.active{display:block;animation:fadeUp .2s ease both}
.phon-sub{margin-bottom:28px}
.phon-sub-title{font-family:var(--font-heading);font-weight:800;font-size:18px;letter-spacing:2px;color:var(--gold);margin:18px 0 10px;border-bottom:1px solid var(--border);padding-bottom:6px}
.phoneme-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:1px;background:var(--border);margin-bottom:20px}
.phoneme-card{background:var(--bg2);padding:14px}
.ph-sym{font-family:var(--font-heading);font-weight:800;font-size:24px;color:var(--red);line-height:1;margin-bottom:6px;letter-spacing:0}
.ph-words{display:flex;flex-wrap:wrap;gap:5px;margin-bottom:8px}
.ph-word-btn{display:inline-flex;align-items:center;gap:4px;font-size:11px;font-weight:600;padding:3px 8px;background:#0a0a0a;border:1px solid var(--border);color:var(--text);cursor:pointer;font-family:var(--font-body);transition:all .12s}
.ph-word-btn:hover{border-color:var(--red);color:var(--red)}
.ph-word-btn.speaking{background:var(--red);color:#fff;border-color:var(--red)}
.ph-word-btn .ph-play-icon{font-size:9px;opacity:.7}
.ph-note{font-size:11px;color:var(--text2);margin-bottom:4px;line-height:1.4}
.ph-bn{font-size:11px;color:var(--text3);line-height:1.4}
.contrast-card{background:var(--bg2);border:1px solid var(--border);padding:14px;margin-bottom:8px}
.contrast-pair{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:10px;margin-bottom:8px}
.contrast-side{text-align:center}
.contrast-ipa{font-family:var(--font-heading);font-weight:800;font-size:16px;color:var(--red)}
.contrast-words{display:flex;flex-direction:column;gap:3px;margin-top:5px}
.contrast-vs{font-family:var(--font-heading);font-weight:800;color:var(--text2);font-size:14px;letter-spacing:2px}
.contrast-bn{font-size:11px;color:var(--text3);border-top:1px solid var(--border);padding-top:6px}
.stress-card{background:var(--bg2);border:1px solid var(--border);border-left:3px solid var(--gold);padding:12px 14px;margin-bottom:8px}
.stress-rule{font-family:var(--font-heading);font-weight:800;font-size:13px;letter-spacing:1px;color:var(--gold);margin-bottom:8px}
.stress-words{display:flex;flex-wrap:wrap;gap:5px;margin-bottom:6px}
.stress-bn{font-size:11px;color:var(--text3)}
.sent-card{background:var(--bg2);border:1px solid var(--border);padding:12px 14px;margin-bottom:8px}
.sent-card-title{font-family:var(--font-heading);font-weight:800;font-size:13px;letter-spacing:1px;color:var(--red);margin-bottom:6px}
.sent-card-line{display:flex;justify-content:space-between;align-items:center;gap:8px;font-size:13px;color:var(--text);padding:4px 0;border-bottom:1px dashed var(--border)}
.sent-card-line:last-child{border-bottom:none}
.sent-card-line b{color:var(--gold)}
.sent-card-bn{font-size:11px;color:var(--text3);margin-top:6px}
.vtabs{display:flex;gap:0;flex-wrap:wrap;border-bottom:1px solid var(--border);margin-bottom:14px}
.vtab{font-family:var(--font-heading);font-weight:800;font-size:12px;letter-spacing:1.5px;padding:8px 14px;border:none;background:transparent;color:var(--text2);cursor:pointer;border-bottom:2px solid transparent;transition:all .12s;margin-bottom:-1px}
.vtab:hover{color:var(--text)}
.vtab.active{color:var(--text);border-bottom-color:var(--red)}
.vocab-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:1px;background:var(--border)}
.vcard{background:var(--bg2);padding:14px}
.vc-word{font-family:var(--font-heading);font-weight:800;font-size:16px;letter-spacing:1px;color:var(--text);margin-bottom:2px}
.vc-phon{font-size:11px;color:var(--red);font-style:italic;margin-bottom:4px}
.vc-bn{font-size:12px;color:var(--text3);margin-bottom:4px}
.vc-def{font-size:11px;color:var(--text2);line-height:1.5;margin-bottom:6px}
.vc-ex{font-size:11px;color:var(--text2);font-style:italic;border-left:2px solid var(--border2);padding-left:8px}
.phrases-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.phrases-group-label{font-size:10px;font-weight:900;letter-spacing:2px;text-transform:uppercase;color:var(--text2);margin-bottom:8px}
.phrase-item{background:var(--bg2);border:1px solid var(--border);border-left:2px solid var(--red);padding:10px 12px;margin-bottom:6px}
.phrase-en{font-size:13px;font-style:italic;color:var(--text);margin-bottom:3px}
.phrase-bn{font-size:11px;color:var(--text3);margin-bottom:6px}
.phrase-play{display:inline-flex;align-items:center;gap:4px;font-family:var(--font-heading);font-weight:800;font-size:10px;letter-spacing:1.5px;padding:3px 8px;background:transparent;border:1px solid var(--border);color:var(--text2);cursor:pointer}
.phrase-play:hover{border-color:var(--red);color:var(--red)}
.phrase-play.speaking{background:var(--red);color:#fff;border-color:var(--red)}
.cue-prac-timer{background:var(--bg2);border:1px solid var(--border);border-top:3px solid var(--gold);padding:18px;text-align:center;margin-top:18px}
.cue-prac-timer-num{font-family:var(--font-heading);font-weight:800;font-size:48px;letter-spacing:3px;color:var(--text);line-height:1;margin-bottom:10px}
.cue-prac-timer-num.warn{color:var(--red)}
.cue-prac-timer-num.done{color:var(--gold)}
.cue-prac-timer-btn{font-family:var(--font-heading);font-weight:800;font-size:13px;letter-spacing:2px;padding:8px 24px;border:none;background:var(--red);color:#fff;cursor:pointer}
.cue-prac-timer-btn.stop{background:#444}
@media (max-width:900px){
  .phrases-grid{grid-template-columns:1fr}
}

/* ── Report-issue modal + toast (shared by all Speaking sub-tabs) ── */
.toast{position:fixed;bottom:20px;right:20px;background:var(--bg2);border:1px solid var(--border);color:var(--text);padding:11px 18px;font-family:var(--font-heading);font-weight:800;font-size:13px;letter-spacing:1.5px;z-index:999;opacity:0;transform:translateY(6px);transition:all .25s;pointer-events:none}
.toast.show{opacity:1;transform:translateY(0)}
.rep-overlay{position:fixed;inset:0;background:rgba(0,0,0,.75);z-index:500;display:none;align-items:center;justify-content:center;padding:16px}
.rep-overlay.show{display:flex}
.rep-modal{background:var(--bg2);border:1px solid var(--border);max-width:420px;width:100%;padding:20px}
.rep-title{font-family:var(--font-heading);font-weight:800;font-size:18px;letter-spacing:2px;margin-bottom:10px}
.rep-textarea{width:100%;min-height:80px;background:#111;border:1px solid var(--border);color:#fff;padding:10px;font-family:var(--font-body);font-size:13px;margin:10px 0}
.rep-btns{display:flex;gap:8px;justify-content:flex-end}
.rep-cancel,.rep-submit{font-size:11px;font-weight:700;padding:8px 14px;cursor:pointer;border:1px solid var(--border2);background:transparent;color:var(--text2)}
.rep-submit{background:var(--red);color:#fff;border-color:var(--red)}

@media (max-width:1100px){
  .sb-card-grid--5{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (max-width:900px){
  .sb-topbar{height:auto;min-height:64px;align-items:flex-start;gap:12px;flex-direction:column;padding:14px 16px}
  .sb-toplinks{width:100%;overflow-x:auto}
  .sb-shell{width:min(100% - 24px,1180px);padding-top:24px}
  .sb-hero{grid-template-columns:1fr}
  .sb-hero-actions{justify-content:flex-start}
  h1{font-size:56px}
  .sb-card-grid,.sb-card-grid--5,.sample-list,.sb-dash-stats{grid-template-columns:1fr 1fr}
  .sb-dash-hint{text-align:left;max-width:none}
  .filter-row{gap:5px;overflow-x:auto;flex-wrap:nowrap;padding-bottom:4px;-webkit-overflow-scrolling:touch}
  .filter-row::-webkit-scrollbar{height:0}
  .filter-chip{flex-shrink:0}
  .qb-q{font-size:13px}
  .qb-bn{font-size:11px}
}
@media (max-width:560px){
  .sb-card-grid,.sb-card-grid--5,.sample-list,.sb-dash-stats{grid-template-columns:1fr}
}

/* ═══ Premium skin (presentation only: no ids / markup / behaviour change) ═══════════════════════════════
   Rounded surfaces instead of hairline grids, an accent hero, tool cards with an icon and a lift on hover. */
.sb-topbar{backdrop-filter:blur(10px)}
.sb-toplinks a{border-radius:99px;padding:8px 16px;transition:transform .15s,border-color .15s}
.sb-toplinks a:hover{transform:translateY(-1px)}
.sb-hero{position:relative;overflow:hidden;isolation:isolate;border:0;border-radius:26px;padding:38px 36px;margin-bottom:24px;align-items:center;
  background:linear-gradient(135deg,color-mix(in srgb,var(--red) 88%,#fff) 0%,var(--red) 46%,color-mix(in srgb,var(--red2) 60%,#000) 100%);box-shadow:0 24px 48px -26px color-mix(in srgb,var(--red) 75%,transparent)}
.sb-hero::before,.sb-hero::after{content:"";position:absolute;z-index:-1;border-radius:50%;background:rgba(255,255,255,.09);pointer-events:none}
.sb-hero::before{width:300px;height:300px;right:-80px;top:-140px;animation:sbfloat 10s ease-in-out infinite}
.sb-hero::after{width:170px;height:170px;right:230px;bottom:-105px;animation:sbfloat 13s ease-in-out infinite reverse}
.sb-hero .sb-eyebrow{color:rgba(255,255,255,.82)}
.sb-hero h1{font-size:clamp(40px,6vw,68px);color:#fff}
.sb-hero .sb-sub{color:rgba(255,255,255,.9)}
.sb-hero .sb-btn{border-radius:99px;min-height:42px;padding:10px 20px}
.sb-hero .sb-btn.ghost{color:#fff;border-color:rgba(255,255,255,.5);background:rgba(255,255,255,.1)}
.sb-hero .sb-btn.red{background:#fff;border-color:#fff;color:var(--red2)}
@keyframes sbfloat{0%,100%{transform:translateY(0)}50%{transform:translateY(14px)}}
.sb-tabs,.sb-subtabs{gap:8px;background:transparent;border:0;padding:2px 0}
.sb-tab,.sb-subtab{border:1.5px solid var(--border2);border-radius:99px;transition:transform .15s,border-color .15s}
.sb-tab{min-height:42px;padding:0 22px}
.sb-subtab{min-height:36px}
.sb-tab:hover,.sb-subtab:hover{transform:translateY(-1px);border-color:var(--red)}
.sb-tab.active,.sb-subtab.active{border-color:transparent;background:linear-gradient(150deg,color-mix(in srgb,var(--red) 90%,#fff),var(--red2));box-shadow:0 10px 18px -12px color-mix(in srgb,var(--red) 85%,transparent)}
/* tool cards */
.sb-card-grid{gap:14px;background:transparent;border:0}
.sb-tool-card{position:relative;overflow:hidden;border:1px solid var(--border);border-radius:20px;padding:22px;min-height:224px;transition:transform .18s,border-color .18s,box-shadow .18s}
.sb-tool-card::before{content:"🛠️";display:grid;place-items:center;width:46px;height:46px;border-radius:14px;font-size:22px;background:color-mix(in srgb,var(--red) 16%,transparent);order:-1}
.sb-tool-card[data-activity-tool=qbank]::before{content:"📚"}
.sb-tool-card[data-activity-tool=shadowing]::before{content:"🎧"}
.sb-tool-card[data-activity-tool=pronunciation]::before{content:"🗣️"}
.sb-tool-card[data-activity-tool=cue_timer]::before{content:"⏱️"}
.sb-tool-card[data-activity-tool=samples]::before{content:"✍️"}
.sb-tool-card::after{content:"";position:absolute;left:0;right:0;top:0;height:3px;background:linear-gradient(90deg,var(--red),var(--gold));opacity:0;transition:opacity .18s}
.sb-tool-card:hover{transform:translateY(-4px);border-color:color-mix(in srgb,var(--red) 55%,var(--border));box-shadow:0 22px 34px -24px color-mix(in srgb,var(--red) 70%,#000)}
.sb-tool-card:hover::after{opacity:1}
.sb-card-tag{border-radius:99px;padding:4px 10px}
.sb-card-action::after{content:" →";display:inline-block;transition:transform .15s}
.sb-tool-card:hover .sb-card-action::after{transform:translateX(4px)}
/* lists, chips, cards */
.filter-chip{border-radius:99px;padding:6px 14px}
.qb-item{border-radius:16px;padding:16px 18px}
.qb-btn,.qb-report,.qb-sample-regen{border-radius:99px;padding-left:14px;padding-right:14px}
.qb-sample,.shadow-model-box,.para-input,.sample-answer,.para-ai-result{border-radius:12px}
.para-card,.sample-card,.shadow-q-box,.shadow-model-box,.shadow-score-bar,.recorder-wrap,.sb-empty{border-radius:18px}
.para-topic,.para-btn,.para-ai-btn,.sample-toggle,.rec-btn,.sb-dash-stat{border-radius:12px}
.shadow-part-row{gap:12px;background:transparent}
.shadow-part-btn{border:2px solid var(--border);border-radius:18px;transition:transform .15s,border-color .15s}
.shadow-part-btn:hover{transform:translateY(-2px)}
.shadow-diff-grid{gap:12px;background:transparent}
.shadow-diff-panel{border-radius:16px;border:1px solid var(--border)}
.sb-dash-stats{gap:12px;background:transparent;border:0}
.sb-dash-stat{border:1px solid var(--border)}
.lang-toggle{border-radius:99px}
@media(max-width:700px){.sb-hero{padding:28px 22px;border-radius:22px;grid-template-columns:1fr}.sb-hero-actions{justify-content:flex-start}}
@media(prefers-reduced-motion:reduce){.sb-hero::before,.sb-hero::after{animation:none}.sb-tool-card,.sb-tab,.sb-subtab{transition:none}}

/* ═══ Skill Builder internals (pronunciation course, cue strategy, section headers, modal) ═══════════════════
   Pronunciation was one 4,300 px scroll of six always-open sections: now accordions (first open) with rounded cards. */
.sec-hdr{border:0;margin:6px 0 18px;gap:14px;align-items:center}
.sec-letter{width:52px;height:52px;padding:0;justify-content:center;border-radius:16px;font-size:24px;letter-spacing:0;background:linear-gradient(150deg,color-mix(in srgb,var(--red) 90%,#fff),var(--red2));box-shadow:0 12px 22px -14px color-mix(in srgb,var(--red) 85%,transparent)}
.sec-info{border:0;background:transparent;padding:0}
.sec-info h2{font-size:24px;letter-spacing:.6px}
.sec-info p{font-size:13px;margin-top:3px;color:var(--text2)}
/* the Speaking panel repeats the "Build before you perform" heading the All Tools panel already shows */
.sb-section[data-panel="speaking"]>.sb-section-head{display:none}
/* accordions */
.phon-sub{margin-bottom:12px;border:1px solid var(--border);border-radius:18px;background:var(--bg2);overflow:hidden}
.phon-sub-title{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:0;padding:15px 20px;border:0;font-size:16px;cursor:pointer;list-style:none;user-select:none;transition:background .15s}
.phon-sub-title::-webkit-details-marker{display:none}
.phon-sub-title::after{content:"⌄";font-size:20px;line-height:1;color:var(--text3);transition:transform .2s}
.phon-sub[open]>.phon-sub-title::after{transform:rotate(180deg)}
.phon-sub-title:hover{background:color-mix(in srgb,var(--red) 7%,transparent)}
.phon-sub[open]>.phon-sub-title{border-bottom:1px solid var(--border)}
.phon-sub>div{padding:16px 18px 6px}
.phoneme-grid{gap:12px;background:transparent;margin-bottom:12px}
.phoneme-card{border:1px solid var(--border);border-radius:16px;padding:16px;background:var(--bg3)}
.ph-word-btn{border-radius:99px;padding:4px 11px}
.contrast-card{border-radius:16px;background:var(--bg3);padding:16px}
.stress-card,.sent-card{border-radius:16px;background:var(--bg3);border:1px solid var(--border);border-left:3px solid var(--gold);padding:14px 16px;margin-bottom:10px}
#phon-stress,#phon-sent-stress,#phon-linking,#phon-contrasts{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:12px}
#phon-stress>*,#phon-sent-stress>*,#phon-linking>*,#phon-contrasts>*{margin:0}
/* cue-card strategy: six inline-styled steps -> two-up rounded cards */
.cue-steps{display:grid!important;grid-template-columns:repeat(6,minmax(0,1fr));gap:12px!important}
.cue-steps>div{grid-column:span 2}
.cue-steps>div:nth-child(n+5){grid-column:span 3}
.cue-steps>div{border-radius:18px;padding:18px 20px!important}
.cue-steps>div:nth-child(4){grid-column:1/-1}
.cue-steps>div div[style*="dashed"]{border-radius:12px}
.cue-prac-timer{border-radius:22px;padding:26px 18px;margin-top:20px}
.cue-prac-timer-btn{border-radius:99px;padding:10px 30px}
@media(max-width:820px){.cue-steps{grid-template-columns:1fr}.cue-steps>div,.cue-steps>div:nth-child(n+5),.cue-steps>div:nth-child(4){grid-column:auto}}
/* writing sample library + report modal */
.sample-controls input,.sample-controls select{border-radius:12px}
.sample-card{border-radius:18px;transition:transform .15s,border-color .15s}
.sample-card:hover{transform:translateY(-2px);border-color:color-mix(in srgb,var(--red) 40%,var(--border))}
.rep-modal{border-radius:22px}
.rep-textarea{border-radius:12px}
.rep-cancel,.rep-submit{border-radius:99px}

/* ═══ One flat navigation row ══════════════════════════════════════════════════════════════════════════════
   Was: 2 hero buttons + 3 top tabs + 4 sub-tabs (9 choices in three rows before any content). The hero buttons duplicated the
   top-bar links; the two tab levels are folded into #sb-nav (6 options). The old rows stay in the DOM, hidden, because
   skill-builder.js still drives them. */
.sb-tabs,.sb-subtabs{display:none!important}
.sb-hero{padding:26px 32px;margin-bottom:18px;grid-template-columns:minmax(0,1fr)}
.sb-hero h1{font-size:clamp(34px,5vw,54px)}
.sb-hero .sb-sub{margin-top:10px;max-width:720px}
.sb-nav{display:flex;gap:8px;overflow-x:auto;margin:0 0 26px;padding:2px 0 6px;scrollbar-width:none}
.sb-nav::-webkit-scrollbar{display:none}
.sb-nav-btn{flex:none;min-height:42px;padding:0 20px;border:1.5px solid var(--border2);border-radius:99px;background:var(--bg2);color:var(--text2);font-family:var(--font-heading);font-weight:800;font-size:13px;letter-spacing:1.4px;cursor:pointer;white-space:nowrap;transition:transform .15s,border-color .15s}
.sb-nav-btn:hover{transform:translateY(-1px);border-color:var(--red)}
.sb-nav-btn.active{color:#fff;border-color:transparent;background:linear-gradient(150deg,color-mix(in srgb,var(--red) 90%,#fff),var(--red2));box-shadow:0 10px 18px -12px color-mix(in srgb,var(--red) 85%,transparent)}
@media(max-width:700px){.sb-hero{padding:22px 20px}}

/* ═══ Question Bank + Cue cards: search, topic dropdown, paging, follow-ups ═══════════════════════════════ */
.qb-toolbar{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin:0 0 10px}
.qb-toolbar input[type=search]{flex:1 1 240px;min-width:0;min-height:44px;padding:0 16px;border:1.5px solid var(--border2);border-radius:99px;background:var(--bg2);color:var(--text);font-family:var(--font-body);font-size:14px}
.qb-toolbar select{flex:0 1 260px;min-height:44px;padding:0 14px;border:1.5px solid var(--border2);border-radius:99px;background:var(--bg2);color:var(--text);font-family:var(--font-body);font-size:13px;font-weight:700}
.qb-toolbar input:focus,.qb-toolbar select:focus{outline:none;border-color:var(--red)}
.qb-toolbar .lang-toggle{margin-left:0}
.qb-count{margin:0 0 12px 4px;font-size:12px;font-weight:800;letter-spacing:.06em;text-transform:uppercase;color:var(--text3)}
.qb-more{display:block;width:100%;margin-top:6px;padding:13px;border:1.5px dashed color-mix(in srgb,var(--red) 45%,var(--border2));border-radius:16px;background:transparent;color:var(--red);font-family:var(--font-heading);font-weight:800;font-size:13px;letter-spacing:1.4px;cursor:pointer;transition:background .15s}
.qb-more:hover{background:color-mix(in srgb,var(--red) 8%,transparent)}
.qb-more span{color:var(--text3);font-weight:600;letter-spacing:0}
.qb-follow{margin-top:12px;border:1px solid var(--border);border-radius:14px;background:var(--bg3)}
.qb-follow>summary{cursor:pointer;list-style:none;padding:11px 16px;font-size:12px;font-weight:800;letter-spacing:.06em;text-transform:uppercase;color:var(--violet)}
.qb-follow>summary::-webkit-details-marker{display:none}
.qb-follow>summary::after{content:"⌄";float:right;transition:transform .2s}
.qb-follow[open]>summary::after{transform:rotate(180deg)}
.qb-follow-q{display:flex;justify-content:space-between;gap:12px;align-items:center;padding:11px 16px;border-top:1px solid var(--border);font-size:13.5px;line-height:1.5}
.qb-follow-q .qb-bn{display:block;margin:2px 0 0}
.qb-follow-q .qb-btn{flex:none}
.qb-part-tag.p2{background:rgba(214,154,67,.15);color:var(--gold)}
.cue-strategy{margin-top:22px;border:1px solid var(--border);border-radius:18px;background:var(--bg2);padding:0 18px 18px}
.cue-strategy>summary{cursor:pointer;list-style:none;padding:16px 0;font-size:13.5px;font-weight:800;color:var(--text)}
.cue-strategy>summary::-webkit-details-marker{display:none}
.cue-strategy>summary::after{content:"⌄";float:right;font-size:20px;line-height:1;color:var(--text3);transition:transform .2s}
.cue-strategy[open]>summary::after{transform:rotate(180deg)}
@media(max-width:560px){.qb-follow-q{flex-direction:column;align-items:flex-start}}

/* ═══ Shadowing: 3 clear steps ═════════════════════════════════════════════════════════════════════════════ */
.shadow-part-row{grid-template-columns:repeat(2,minmax(0,1fr))}
.shadow-part-label{font-size:12px;margin-top:4px}
.shadow-meta{margin:2px 0 12px;font-size:12px;font-weight:700;color:var(--text3)}
.shadow-listen{display:inline-flex;gap:6px}
.shadow-listen .spk-btn{width:auto;padding:0 12px;height:30px;border-radius:99px;font-size:12px;font-weight:700;margin-left:0}
.shadow-model-box{border-left-color:var(--gold)}
.shadow-model-text{font-size:15.5px;line-height:1.9;color:var(--text)}
.shadow-model-label{align-items:center;flex-wrap:wrap;gap:8px}
.shadow-step-label{margin:20px 0 -6px;font-size:10px;font-weight:900;letter-spacing:2px;text-transform:uppercase;color:var(--gold)}
#shadow-empty{border-radius:18px;padding:22px 20px!important;line-height:1.7}
.rec-status{max-width:420px;margin-left:auto;margin-right:auto;line-height:1.5}

/* ═══ Writing samples: model answers first, other prompts as compact rows ═══════════════════════════════ */
.sample-card--soon{grid-column:1/-1;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 18px;opacity:1;border-style:solid}
.sample-soon-main{min-width:0}
.sample-soon-main .sample-meta{margin-bottom:6px}
.sample-soon-main .sample-prompt{margin:0;font-size:14px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.sample-practise{flex:none;display:inline-flex;align-items:center;padding:8px 16px;border-radius:99px;border:1.5px solid color-mix(in srgb,var(--red) 55%,var(--border2));color:var(--red);font-family:var(--font-heading);font-weight:800;font-size:12.5px;letter-spacing:1.2px;text-decoration:none;white-space:nowrap;transition:background .15s}
.sample-practise:hover{background:color-mix(in srgb,var(--red) 10%,transparent)}
.sample-actions{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.sample-toggle{border-radius:99px;padding:9px 18px}
.sample-pill{border-radius:99px;padding:4px 10px}
.sample-pill--ok{color:var(--green);border-color:rgba(85,185,130,.5)}
.sample-linkbtn{margin-left:8px;padding:0;border:0;background:none;color:var(--red);font:inherit;font-weight:800;cursor:pointer;text-decoration:underline;text-underline-offset:3px}
.sample-answer{line-height:1.85;font-size:14px;color:var(--text)}
.sample-card.open{grid-column:1/-1}
@media(max-width:640px){.sample-card--soon{flex-direction:column;align-items:flex-start}}
.shadow-q-box .spk-btn,.shadow-model-label .spk-btn{width:auto;height:30px;padding:0 12px;border-radius:99px;font-size:12px;font-weight:700;margin-left:0;white-space:nowrap}

/* ═══ All tools home: a guided path ══════════════════════════════════════════════════════════════════════ */
.sb-group-label{margin:26px 0 12px;font-size:11px;font-weight:900;letter-spacing:.12em;text-transform:uppercase;color:var(--text3)}
.sb-card-grid--4{grid-template-columns:repeat(4,minmax(0,1fr))}
.sb-card-grid--1{grid-template-columns:minmax(0,1fr)}
.sb-step{position:absolute;top:18px;right:18px;width:30px;height:30px;border-radius:50%;display:grid;place-items:center;font-family:var(--font-heading);font-weight:800;font-size:14px;color:#fff;background:linear-gradient(150deg,color-mix(in srgb,var(--red) 90%,#fff),var(--red2))}
.sb-tool-card--wide{min-height:0;display:grid;grid-template-columns:auto 1fr auto;column-gap:18px;row-gap:4px;align-items:center}
.sb-tool-card--wide::before{grid-row:1/span 3}
.sb-tool-card--wide .sb-card-tag{grid-column:2}
.sb-tool-card--wide h3{grid-column:2}
.sb-tool-card--wide p{grid-column:2}
.sb-tool-card--wide .sb-card-activity{grid-column:2}
.sb-tool-card--wide .sb-card-action{grid-column:3;grid-row:1/span 3;margin:0}
@media(max-width:1000px){.sb-card-grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:560px){.sb-card-grid--4{grid-template-columns:1fr}.sb-tool-card--wide{grid-template-columns:auto 1fr}.sb-tool-card--wide .sb-card-action{grid-column:2;grid-row:auto}}

/* ═══ Shadowing: sentence-by-sentence mode ═══════════════════════════════════════════════════════════════ */
.shadow-mode{display:inline-flex;gap:4px;padding:4px;margin:0 0 14px;border:1px solid var(--border);border-radius:99px;background:var(--bg2)}
.shadow-mode button{border:0;background:transparent;color:var(--text2);padding:8px 16px;border-radius:99px;font-family:var(--font-body);font-size:13px;font-weight:800;cursor:pointer;transition:background .15s,color .15s}
.shadow-mode button.active{background:linear-gradient(150deg,color-mix(in srgb,var(--red) 90%,#fff),var(--red2));color:#fff}
#shadow-question-area[data-smode="steps"] .shadow-model-box,
#shadow-question-area[data-smode="steps"] #shadow-recorder,
#shadow-question-area[data-smode="steps"] #shadow-diff-area{display:none!important}
#shadow-question-area[data-smode="whole"] #shadow-steps{display:none}
.ss-dots{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 14px}
.ss-dot{width:34px;height:34px;border-radius:50%;border:1.5px solid var(--border2);background:var(--bg2);color:var(--text3);font-family:var(--font-heading);font-weight:800;font-size:13px;cursor:pointer;transition:transform .15s,border-color .15s}
.ss-dot:hover{transform:translateY(-2px)}
.ss-dot.cur{border-color:var(--red);color:var(--text);box-shadow:0 0 0 3px color-mix(in srgb,var(--red) 25%,transparent)}
.ss-dot.ok{background:color-mix(in srgb,var(--gold) 22%,transparent);border-color:var(--gold);color:var(--gold)}
.ss-dot.great{background:color-mix(in srgb,var(--green) 22%,transparent);border-color:var(--green);color:var(--green)}
.ss-dot.low{background:color-mix(in srgb,#dc2626 16%,transparent);border-color:#dc2626;color:#f19a9a}
.ss-card{padding:24px 24px 20px;border:1px solid var(--border);border-radius:22px;background:var(--bg2)}
.ss-count{margin-bottom:10px;font-size:11px;font-weight:900;letter-spacing:.12em;text-transform:uppercase;color:var(--gold)}
.ss-text{font-size:clamp(20px,2.6vw,26px);line-height:1.6;font-family:var(--font-body);color:var(--text)}
.ss-w{padding:0 2px;border-radius:5px;transition:background .2s,color .2s}
.ss-w.ok{color:var(--green);background:color-mix(in srgb,var(--green) 12%,transparent)}
.ss-w.miss{color:#f19a9a;background:color-mix(in srgb,#dc2626 14%,transparent);text-decoration:underline wavy #dc2626;text-underline-offset:5px}
.ss-actions{display:flex;flex-wrap:wrap;gap:10px;margin:20px 0 12px}
.ss-btn{padding:11px 20px;border-radius:99px;border:1.5px solid var(--border2);background:transparent;color:var(--text);font-family:var(--font-heading);font-weight:800;font-size:13px;letter-spacing:1.2px;cursor:pointer;transition:transform .15s,border-color .15s}
.ss-btn:hover{transform:translateY(-1px);border-color:var(--red)}
.ss-btn.primary,.ss-mic{border-color:transparent;color:#fff;background:linear-gradient(150deg,color-mix(in srgb,var(--red) 90%,#fff),var(--red2));box-shadow:0 12px 20px -14px color-mix(in srgb,var(--red) 85%,transparent)}
.ss-mic.rec{background:#dc2626;animation:ssPulse 1.2s infinite}
@keyframes ssPulse{0%{box-shadow:0 0 0 0 rgba(220,38,38,.5)}70%{box-shadow:0 0 0 14px rgba(220,38,38,0)}100%{box-shadow:0 0 0 0 rgba(220,38,38,0)}}
.ss-live{min-height:22px;font-size:13.5px;line-height:1.55;color:var(--text2)}
.ss-result{display:grid;grid-template-columns:auto 1fr;gap:6px 16px;align-items:center;margin-top:16px;padding:16px 18px;border-radius:16px;border:1px solid var(--border)}
.ss-result[hidden]{display:none}
.ss-result.great{background:color-mix(in srgb,var(--green) 10%,transparent);border-color:color-mix(in srgb,var(--green) 40%,var(--border))}
.ss-result.ok{background:color-mix(in srgb,var(--gold) 10%,transparent);border-color:color-mix(in srgb,var(--gold) 40%,var(--border))}
.ss-result.low{background:color-mix(in srgb,#dc2626 8%,transparent);border-color:color-mix(in srgb,#dc2626 35%,var(--border))}
.ss-pct{font-family:var(--font-heading);font-weight:800;font-size:40px;line-height:1}
.ss-msg{display:grid;gap:2px;font-size:13.5px}
.ss-msg span{color:var(--text2);font-size:12.5px}
.ss-msg i{font-style:normal;font-weight:800;color:#f19a9a}
.ss-result .ss-nav{grid-column:1/-1}
.ss-nav{display:flex;flex-wrap:wrap;gap:10px;margin-top:6px}
.ss-finish{text-align:center}
.ss-finish .ss-big{font-family:var(--font-heading);font-weight:800;font-size:64px;line-height:1;color:var(--gold)}
.ss-fin-t{margin:8px 0;font-size:17px;font-weight:800}
.ss-fin-p{margin:10px 0 8px;font-size:13px;color:var(--text2)}
.ss-weak{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-bottom:8px}
.ss-chip{padding:7px 14px;border-radius:99px;border:1.5px solid #dc2626;background:color-mix(in srgb,#dc2626 10%,transparent);color:#f19a9a;font-weight:800;font-size:12.5px;cursor:pointer}
.ss-finish .ss-nav{justify-content:center;margin-top:14px}
@media(prefers-reduced-motion:reduce){.ss-mic.rec{animation:none}}