/* Ear Trainer – "Warm Sand" (light + dark), same tokens as rudiments-tracker */
:root{
  --bg:#f6f0e8; --bg2:#efe6db; --card:#fffaf4; --card2:#f8efe5; --line:#eadccd; --line2:#dccbb9;
  --text:#3b2f28; --muted:#83715f; --dim:#ab9a89;
  --accent:#de7a60; --accent2:#cf6549; --accent-soft:#f7dfd5; --on-accent:#fffaf5;
  --good:#5f9f7c; --warn:#d39b3a; --bad:#c85a48; --good-soft:#e2efe5; --warn-soft:#f6ead2; --bad-soft:#f6dcd6;
  --radius:22px; --shadow:0 1px 2px rgba(120,80,50,.06), 0 8px 24px rgba(120,80,50,.07);
  --font:"Heebo","Rubik","Assistant","Segoe UI","Arial Hebrew",Arial,sans-serif;
  /* text-strength variants of muted / accent / good (WCAG AA on every card and soft background) */
  --muted-t:#715f4e; --accent-t:#9e4630; --good-t:#356b4e; --bad-t:#a6463a; --warn-t:#7f5700;
  /* filled terracotta behind light text: darker than --accent so the label reaches AA (≈4.6:1) */
  --accent-fill:#b8553c; --accent-fill2:#a24a33;
  color-scheme:light;
}
[data-theme="dark"]{
  --bg:#2a221d; --bg2:#231c18; --card:#352b25; --card2:#3d322b; --line:#4a3d34; --line2:#5a4a3f;
  --text:#f3e8dc; --muted:#c3b09e; --dim:#8f7d6d;
  --accent:#e4836a; --accent2:#d26b50; --accent-soft:#563a30; --on-accent:#2a1a13;
  --good:#7cbf98; --warn:#e2b25a; --bad:#e2725f; --good-soft:#30402f; --warn-soft:#4a3d26; --bad-soft:#4f2f29;
  --shadow:0 1px 2px rgba(0,0,0,.2), 0 10px 28px rgba(0,0,0,.22);
  --muted-t:var(--muted); --accent-t:#f09a82; --good-t:#8fd0aa; --bad-t:#f08c7a; --warn-t:var(--warn);
  --accent-fill:var(--accent); --accent-fill2:var(--accent2);
  color-scheme:dark;
}
*{box-sizing:border-box}
html,body{margin:0;min-height:100%}
html:has(body:not([data-route="play"])){scroll-padding-bottom:calc(130px + env(safe-area-inset-bottom))}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.5;-webkit-font-smoothing:antialiased;font-size:16px;
  -webkit-tap-highlight-color:transparent;overflow-x:hidden}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
a{color:inherit}
h1,h2,h3{margin:0;font-weight:700}
h1:focus{outline:none}
.muted{color:var(--muted-t)} .small{font-size:13.5px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
[hidden]{display:none!important}
.row{display:flex;align-items:center} .gap{gap:10px} .wrap{flex-wrap:wrap}
.dot{display:inline-block;width:9px;height:9px;border-radius:50%;background:var(--accent);flex:none}
kbd{font-family:inherit;font-size:12px;font-weight:600;border:1px solid var(--line2);border-bottom-width:2px;border-radius:6px;padding:0 6px;background:var(--card);color:var(--muted-t);line-height:1.5}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px}

/* ---------- layout: bottom tabs on every width (layout B) ---------- */
.app{display:block;min-height:100vh}
.side{position:fixed;inset:auto 0 0 0;height:auto;display:flex;flex-direction:column;align-items:stretch;z-index:30;padding:0 8px calc(6px + env(safe-area-inset-bottom));background:var(--card);border-top:1px solid var(--line);box-shadow:0 -4px 18px rgba(0,0,0,.18)}
.side::before{display:none}
.nav{display:flex;flex-direction:row;flex:1;justify-content:space-around;align-items:stretch;gap:2px;width:min(720px,100%);margin:0 auto}
.nav-i{position:relative;display:flex;flex-direction:column;align-items:center;gap:2px;padding:6px 2px;border-radius:10px;text-decoration:none;color:var(--muted-t);font-size:13px;font-weight:600;transition:.15s;min-height:56px;justify-content:center;flex:1;max-width:200px;border:0;background:transparent;font-family:inherit;cursor:pointer}
.nav-i span{text-align:center;line-height:1.15}
.nav-i svg{width:22px;height:22px}
.nav-i:hover{color:var(--text);background:var(--card2)}
.nav-i.on{color:var(--accent-t);background:var(--accent-soft);font-weight:700}
.main{padding:22px 34px calc(108px + env(safe-area-inset-bottom));min-width:0;max-width:1400px;width:100%;margin:0 auto}
body[data-route="play"] .side,body[data-route="play"] .topbar{display:none!important}
body[data-route="play"] .main{padding-bottom:calc(28px + env(safe-area-inset-bottom))}
body[data-route="play"] .toast{bottom:calc(26px + env(safe-area-inset-bottom))}
#playPts{display:none}
#screen-home{max-width:720px;margin-inline:auto}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px}
.tb-stats{display:flex;gap:10px;flex-wrap:wrap}
.tb-chip{display:inline-flex;align-items:center;gap:6px;min-height:44px;padding:6px 16px;border-radius:999px;background:var(--card);border:1px solid var(--line);font-size:15px;box-shadow:var(--shadow)}
.tb-chip b{font-variant-numeric:tabular-nums}
.tb-gear{width:56px;height:56px;border-radius:50%;border:1px solid var(--line2);background:var(--card2);display:grid;place-items:center;color:var(--muted-t);flex:none;text-decoration:none}
.tb-gear svg{width:22px;height:22px}
.tb-gear:hover,.tb-gear.on{color:var(--accent);border-color:var(--accent)}
html:not([data-skin="sand"]) .tb-gear{border-radius:6px}
.theme-btn{width:56px;height:56px;border-radius:50%;border:1px solid var(--line2);background:var(--card2);display:grid;place-items:center;color:var(--muted-t);flex:none}
.install-btn{min-height:56px;padding:0 18px;border-radius:999px;border:0;background:var(--accent-fill);color:#fffaf5;font:inherit;font-weight:700;flex:none;margin-inline-start:auto}
.install-btn[hidden]{display:none}
/* guests: a visible way back to the welcome screen to sign in */
.tb-login{display:inline-flex;align-items:center;gap:8px;min-height:44px;padding:0 16px;border-radius:999px;border:1px solid var(--accent);background:var(--accent-soft);color:var(--accent-t,var(--accent));font:inherit;font-size:15px;font-weight:600;flex:none;margin-inline-start:auto;cursor:pointer;white-space:nowrap}
.tb-login svg{width:18px;height:18px;transform:scaleX(-1)} /* RTL: the arrow points into the door */
.tb-login:hover{background:var(--accent);color:var(--on-accent)}
.tb-login[hidden]{display:none}
.tb-login:not([hidden]) ~ .install-btn{margin-inline-start:0}
html:not([data-skin="sand"]) .tb-login{border-radius:6px}
@media (max-width:480px){
  .tb-login{padding:0 12px} .tb-login svg{display:none} .topbar:has(.tb-login:not([hidden])) .tb-brand b{display:none} /* keep one row: the shield stays, the wordmark yields */
  #tbStreakBest{display:none}
  .tb-gear,.theme-btn{width:44px;height:44px}
  .tb-chip{padding:4px 10px}
}
.theme-btn:hover{color:var(--accent);border-color:var(--accent)}
.theme-btn svg{width:22px;height:22px}
[data-theme="light"] .i-sun{display:none} [data-theme="dark"] .i-moon{display:none}
.screen{animation:fade .18s ease}
@keyframes fade{from{opacity:.4;transform:translateY(4px)}to{opacity:1;transform:none}}
.scr-h{display:flex;align-items:baseline;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:22px}
.scr-h h1{font-size:30px;font-weight:800}
.col{display:flex;flex-direction:column;gap:20px;min-width:0}

/* ---------- cards & controls ---------- */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:14px;min-width:0}
.card-h{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap}
.card-h h2{font-size:18px;display:flex;align-items:center;gap:9px}
.h2{font-size:18px} .h3{font-size:16px;margin-top:4px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:56px;padding:10px 22px;border-radius:999px;border:1px solid var(--line2);background:var(--card);font-weight:600;font-size:15.5px;text-decoration:none;transition:.15s;white-space:nowrap}
.btn:hover{border-color:var(--accent);color:var(--accent-t)}
.btn:active{transform:translateY(1px)}
.btn svg{width:20px;height:20px}
.btn.primary{background:var(--accent-fill);border-color:var(--accent-fill);color:var(--on-accent)}
.btn.primary:hover{background:var(--accent-fill2);border-color:var(--accent-fill2);color:var(--on-accent)}
.btn.primary kbd{background:rgba(255,255,255,.2);border-color:rgba(255,255,255,.4);color:inherit}
.btn.ghost{background:transparent}
.btn.danger:not(.primary){color:var(--bad-t)}
.btn.danger.primary{background:var(--bad-t);border-color:var(--bad-t);color:var(--card)}
.btn.sm{min-height:56px;padding:6px 16px;font-size:14.5px}
.btn.lg{min-height:60px;padding:12px 24px;font-size:17px}
.btn.xl{min-height:72px;padding:14px 34px;font-size:20px;font-weight:700}
.btn.xl svg{width:24px;height:24px}
.link{color:var(--accent-t);font-weight:600;text-decoration:none;font-size:14.5px;min-height:44px;display:inline-flex;align-items:center}
.seg{display:inline-flex;background:var(--bg2);border:1px solid var(--line);border-radius:999px;padding:4px;gap:2px;flex-wrap:wrap}
.seg>*{min-width:56px;justify-content:center;border:0;background:transparent;padding:8px 18px;border-radius:999px;font-size:15px;font-weight:600;color:var(--muted-t);min-height:48px;display:inline-flex;align-items:center}
.seg>.on{background:var(--card);color:var(--accent-t);box-shadow:var(--shadow)}
/* a segmented control in a form field spans the field: options share the row instead of bunching on one side */
.fld>.seg>*{flex:1 1 auto}
.tin{width:100%;min-height:56px;background:var(--bg);border:1px solid var(--line2);border-radius:14px;padding:10px 14px;font-size:16px;outline:none}
.tin:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.fld{display:flex;flex-direction:column;gap:8px;min-width:0}
.fld>span{font-size:14.5px;color:var(--muted-t);font-weight:500}
.fld>span b{color:var(--text)}
.range{width:100%;accent-color:var(--accent);min-height:44px}
.bar{height:10px;border-radius:99px;background:var(--bg2);overflow:hidden;position:relative}
.bar i{position:absolute;inset:0 0 0 auto;border-radius:99px;background:var(--accent);transition:width .5s cubic-bezier(.2,.8,.2,1)}
.bar.done i{background:var(--good)}
/* per-question strip on the play screen (question 1 on the right, like the reading direction) */
.qstrip{display:flex;gap:4px;list-style:none;margin:0;padding:0}
.qs{flex:1;height:10px;border-radius:99px;background:var(--bg2);transition:background .2s}
.qs.active{background:var(--accent-soft);box-shadow:inset 0 0 0 2px var(--accent)}
.qs.right{background:var(--good)}
.qs.wrong{background:var(--bad)}
.qs.done{background:var(--line2)}
.qs.extra{flex:.7;background:var(--warn-soft);box-shadow:inset 0 0 0 1px var(--warn)}
.qs.x0{margin-inline-start:12px}
.qs.extra.active{box-shadow:inset 0 0 0 2px var(--accent)}
.qs.extra.right{background:var(--good);box-shadow:none}
.qs.extra.wrong{background:var(--bad);box-shadow:none}
.note{padding:12px 16px;border-radius:16px;display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-bottom:18px;background:var(--warn-soft);border:1px solid var(--warn)}
.fx-a{display:flex;gap:8px;margin-inline-start:auto}
.stars{display:flex;gap:6px;justify-content:center}
.star{font-size:40px;color:var(--line2);line-height:1}
.star.on{color:var(--warn)}
.stars.sm .star{font-size:17px}

/* ---------- home ---------- */
.hello{margin-bottom:20px}
.hello h1{font-size:32px;font-weight:800}
.lead{font-size:20px;margin:2px 0 0;color:var(--muted-t)}
.home-grid{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);gap:22px;align-items:start}
.wo-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.weak-home{display:flex;flex-direction:column;gap:8px;padding-top:4px;border-top:1px solid var(--line)}
.weak-go{align-self:stretch;min-height:52px;font-size:16px;font-weight:600;background:transparent}
.weak-names{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:4px 12px}
.weak-names li{color:var(--muted-t);font-size:14px}
.weak-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.home-join{margin:8px 0 0}
.b-row{display:flex;align-items:center;gap:12px;width:100%;min-height:64px;padding:10px 14px;border-radius:8px;border:1px solid var(--line);background:var(--card);color:var(--text);text-align:start;font:inherit;font-weight:600;cursor:pointer;text-decoration:none}
.b-row small{display:block;color:var(--muted-t);font-weight:500}
.b-row .go{margin-inline-start:auto;color:var(--accent-t);font-weight:700;white-space:nowrap}
.prac-links{display:flex;flex-direction:column;gap:10px;margin-bottom:16px}
.ctl-row .btn.quiet{background:transparent;border-color:transparent;color:var(--muted-t);box-shadow:none}
.ctl-row .btn.primary{min-width:min(100%,240px)}
.weak-list li{display:flex;align-items:center;justify-content:space-between;gap:10px;min-height:44px;padding:8px 12px;border-radius:14px;background:var(--card2)}
.tc-weak-act{white-space:normal;width:100%;max-width:100%;text-align:center}
.wo-list li{display:flex;align-items:center;gap:14px;padding:12px 14px;border-radius:18px;background:var(--card2);min-height:68px}
.wo-ic,.mm-ic{width:44px;height:44px;border-radius:14px;background:var(--accent-soft);color:var(--accent-t);display:grid;place-items:center;flex:none}
.wo-ic svg,.mm-ic svg{width:26px;height:26px}
.card-h h2 .mm-ic{width:38px;height:38px}
.pl-t{display:flex;flex-direction:column;min-width:0;flex:1}
.pl-t small{font-size:13.5px}
.wo-min{font-size:14.5px;color:var(--muted-t);white-space:nowrap}
.wo-sc{color:var(--good-t);font-size:18px;font-variant-numeric:tabular-nums}
.tick{width:30px;height:30px;border-radius:50%;border:2px solid var(--line2);display:grid;place-items:center;color:transparent;flex:none}
.tick svg{width:15px;height:15px}
.wo-list li.done .tick{background:var(--good);border-color:var(--good);color:#fff}
.wo-foot{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow)}
.stat{text-align:center;padding:4px;min-width:0}
.stat+.stat{border-inline-start:1px solid var(--line)}
.stat-v{font-size:30px;font-weight:800;font-variant-numeric:tabular-nums;direction:ltr}
.stat-l{font-size:14px;color:var(--muted-t)}
.stat-s{font-size:12.5px}
.goal-bar{height:14px}
.mods-mini{display:flex;flex-direction:column;gap:16px}
.mm-h{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:8px}
.mm-h .mm-ic{width:36px;height:36px;border-radius:12px}
.mm-h .mm-ic svg{width:21px;height:21px}
.mm-h .muted{margin-inline-start:auto;font-size:14px}

/* ---------- practice ---------- */
.prac-grid{display:flex;flex-direction:column;gap:26px}
.fam-h{font-size:21px;font-weight:800;margin:0 0 12px}
.prac-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:20px;align-items:start}
.mod-h{font-size:18px;display:flex;align-items:center;gap:9px}
.ready{margin:-4px 0 0;color:var(--muted-t);font-weight:600}
.ready.on{color:var(--good-t)}
.mm-more{margin:0}
.lv-all{display:none}
.mod-d{margin:-6px 0 0}
.lv-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.lv{width:100%;display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:16px;border:1px solid transparent;background:var(--card2);text-align:start;min-height:64px}
.lv:hover:not(:disabled){border-color:var(--accent)}
.lv.cur{border-color:var(--accent);background:var(--accent-soft)}
.lv.locked{opacity:.55;cursor:default}
.lv-n{width:34px;height:34px;border-radius:50%;background:var(--card);border:2px solid var(--line2);display:grid;place-items:center;font-weight:700;flex:none;font-size:15px}
.lv.full .lv-n{background:var(--good);border-color:var(--good);color:#fff}
.lv-t{display:flex;flex-direction:column;min-width:0;flex:1}
.lv-t b{font-size:15px}
.lv-t small{font-size:12.5px}
.lk{color:var(--dim)} .lk svg{width:20px;height:20px}

/* ---------- play ---------- */
.stage{gap:16px;padding:24px 26px 26px;max-width:1100px;margin:0 auto}
.stage-top{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.st-ttl{display:flex;flex-direction:column;min-width:0;flex:1}
.st-ttl h1{font-size:24px;font-weight:800}
.st-mod{font-size:14px;font-weight:700;color:var(--accent-t)}
.st-count{display:flex;flex-direction:column;align-items:center;min-width:76px}
.st-count b{font-size:28px;font-weight:800;font-variant-numeric:tabular-nums;direction:ltr;line-height:1.1}
.prompt{font-size:21px;font-weight:600;margin:4px 0 0;text-align:center}
.phase-line{min-height:28px;text-align:center;font-weight:700;color:var(--muted-t);font-size:17px}
.phase-line[data-on="1"]{color:var(--accent-t)}
.ctl-row{display:flex;align-items:center;justify-content:center;gap:12px;flex-wrap:wrap}
.answers{display:grid;gap:12px}
.answers.opts{grid-template-columns:repeat(auto-fit,minmax(170px,1fr))}
.answers.opts.n2{grid-template-columns:repeat(2,minmax(0,1fr))}
.answers.opts.n3{grid-template-columns:repeat(3,minmax(0,1fr))}
.answers.opts.n4{grid-template-columns:repeat(4,minmax(0,1fr))}
.ans{position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;min-height:84px;padding:12px 10px;border-radius:20px;border:2px solid var(--line2);background:var(--card);transition:.12s}
.ans b{font-size:19px;padding-inline:18px;text-align:center}
.ans small{font-size:14px;color:var(--muted-t);font-weight:600}
.ans kbd{position:absolute;top:8px;inset-inline-start:10px}
.ans:hover:not([aria-disabled="true"]){border-color:var(--accent);background:var(--accent-soft)}
.ans[aria-disabled="true"]{cursor:default}
.ans:disabled{opacity:.45;pointer-events:none}
.ans.right{border-color:var(--good);background:var(--good-soft)}
.ans.right::after{content:"✓";position:absolute;top:6px;inset-inline-end:12px;color:var(--good-t);font-weight:800;font-size:20px}
.ans.wrong{border-color:var(--bad);background:var(--bad-soft)}
.feedback{min-height:30px;text-align:center;font-size:17px;padding:4px 10px;border-radius:14px}
.feedback.ok{background:var(--good-soft)}
.feedback.no{background:var(--warn-soft)}
.feedback .fb-i{font-weight:800}
.feedback.ok .fb-i{color:var(--good-t)}
.next-row{display:flex;justify-content:center;min-height:60px}
.piano-wrap{display:flex;flex-direction:column;align-items:center;gap:10px}
.piano{display:flex;direction:ltr;gap:0;padding:6px;background:var(--bg2);border-radius:14px;max-width:100%;overflow-x:auto}
.pk{width:72px;height:160px;border:1px solid var(--line2);background:#fffdf9;border-radius:0 0 10px 10px;flex:none;position:relative;z-index:1;padding:0}
.pk.blk{width:56px;height:96px;background:#3b2f28;margin:0 -28px;z-index:2;border-color:#3b2f28}
.pk.first{box-shadow:inset 0 -8px 0 var(--accent)}
.pk:hover{filter:brightness(.94)}
.pk.right{background:var(--good-soft);box-shadow:inset 0 -8px 0 var(--good)}
.pk.blk.right{background:var(--good)}
.pk.wrong{background:var(--bad-soft);box-shadow:inset 0 -8px 0 var(--bad)}
.pk.blk.wrong{background:var(--bad)}
.hit{animation:hit .14s ease}

/* note input: piano + solfege */
.inst-box,.ni-wrap{display:flex;flex-direction:column;align-items:center;gap:12px;width:100%;min-width:0}
.ni-slot{width:100%;max-width:100%;min-width:0;display:flex;justify-content:center}
.inst-hint,.ni-hint{margin:0;text-align:center}
.inst-sw{justify-content:center}
.note-in{max-width:100%;min-width:0}
.note-in.in-solfege{width:100%}
.solf{display:grid;grid-template-columns:repeat(auto-fill,minmax(84px,1fr));gap:10px;width:100%;max-width:860px}
.sol{position:relative;min-height:72px;border-radius:18px;border:2px solid var(--line2);background:var(--card);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:0;padding:8px 6px}
.sol b{font-size:19px}
.sol small{font-size:13px;color:var(--muted-t);font-weight:600}
.sol kbd{position:absolute;top:5px;inset-inline-start:7px;font-size:11px}
.sol.do{border-color:var(--accent)}
.sol:hover{border-color:var(--accent);background:var(--accent-soft)}
.sol.right{border-color:var(--good);background:var(--good-soft)}
.sol.wrong{border-color:var(--bad);background:var(--bad-soft)}
.target-card{display:flex;flex-direction:column;align-items:center;gap:2px;padding:12px 26px;border-radius:20px;background:var(--accent-soft);border:2px solid var(--accent)}
.target-card b{font-size:24px}
.ni,.mel,.prog,.sing{display:flex;flex-direction:column;align-items:center;gap:16px}

/* sequence slots (melody, progressions, singing) */
.mslots,.pslots{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;direction:ltr}
.mslot,.pslot{min-width:72px;min-height:64px;border-radius:16px;border:2px dashed var(--line2);background:var(--card);display:grid;place-items:center;padding:6px 10px;font-size:19px}
.mslot:not(.empty),.pslot:not(.empty){border-style:solid}
.mslot.given,.pslot.given{background:var(--card2);color:var(--muted-t)}
.mslot.cur,.pslot.cur{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.mslot.right,.pslot.right{border-color:var(--good);background:var(--good-soft)}
.mslot.wrong,.pslot.wrong{border-color:var(--bad);background:var(--bad-soft)}
.mslot.miss{border-style:dashed;border-color:var(--warn);background:var(--warn-soft)}
.wr-count{margin:0}
.numerals{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;max-width:900px}
button.num{position:relative;min-width:96px;min-height:76px;border-radius:16px;border:2px solid var(--line2);background:var(--card);display:flex;flex-direction:column;align-items:center;justify-content:center;padding:10px 10px 6px}
button.num b{font-size:21px;font-family:Georgia,"Times New Roman",serif;direction:ltr}
button.num small{font-size:12.5px;color:var(--muted-t);font-weight:600}
button.num kbd{position:absolute;top:4px;inset-inline-start:6px;font-size:11px}
button.num:hover{border-color:var(--accent);background:var(--accent-soft)}
.pslot b{font-family:Georgia,"Times New Roman",serif}
.prog-ans{font-family:Georgia,"Times New Roman",serif;font-size:19px}
.read-staff{grid-template-columns:repeat(4,minmax(64px,110px))}
.read-staff .slot{border-style:solid}

/* singing */
.sing-meter{display:flex;flex-direction:column;align-items:center;gap:6px;width:min(420px,100%)}
.meter{position:relative;width:100%;height:18px;border-radius:99px;background:var(--bg2);border:1px solid var(--line)}
.meter .mid{position:absolute;inset:-4px auto -4px 50%;width:3px;background:var(--good);transform:translateX(-50%)}
.meter .needle{position:absolute;top:-6px;bottom:-6px;width:10px;border-radius:5px;background:var(--accent-fill);transform:translateX(50%);transition:inset-inline-start .08s linear}
.sing-live{margin:0;min-height:24px;font-weight:600}
.sing-mic{display:flex;flex-direction:column;align-items:center;gap:10px;text-align:center}
.sing-mic p{margin:0}

/* toggles */
.tgl.on{background:var(--good-soft);border-color:var(--good);color:var(--good-t)}

/* workshop */
.ws-grid{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:22px;align-items:start}
.ws-mods{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:10px}
.ws-mod{display:flex;align-items:center;gap:10px;min-height:60px;padding:8px 12px;border-radius:16px;border:2px solid var(--line);background:var(--card2);text-align:start;font-weight:600}
.ws-mod .mm-ic{width:36px;height:36px;border-radius:12px}
.ws-mod .mm-ic svg{width:21px;height:21px}
.ws-mod.on{border-color:var(--accent);background:var(--accent-soft);color:var(--accent-t)}
.ws-items{display:flex;flex-wrap:wrap;gap:10px}
.ws-it{position:relative;min-height:60px;min-width:76px;padding:8px 14px;border-radius:16px;border:2px solid var(--line2);background:var(--card);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:0}
.ws-it b{font-size:16px}
.ws-it small{font-size:12.5px;color:var(--muted-t)}
.ws-it.on{border-color:var(--good);background:var(--good-soft)}
.ws-it.on::after{content:"✓";position:absolute;top:2px;inset-inline-end:6px;line-height:1;font-weight:800;color:var(--good-t);font-size:13px} /* a corner tick: selecting never changes the tile height */
.ws-opts{display:flex;flex-direction:column;gap:14px}
.ws-save{flex-wrap:nowrap}
.ws-save .tin{flex:1;min-width:0}
.ws-presets{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.ws-presets li{display:flex;align-items:center;gap:8px;flex-wrap:wrap;padding:10px 12px;border-radius:14px;background:var(--card2)}

/* rhythm */
.rh{display:flex;flex-direction:column;align-items:center;gap:16px}
.staff{display:grid;grid-template-columns:repeat(4,minmax(64px,110px));gap:8px;direction:ltr;padding:10px;border-radius:18px;background:var(--card2);border:1px solid var(--line)}
.staff.ro{background:transparent}
.slot{min-height:84px;border-radius:14px;border:2px dashed var(--line2);background:var(--card);display:grid;place-items:center;padding:4px}
.slot:not(.empty){border-style:solid}
.slot.cur{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.slot.right{border-color:var(--good);background:var(--good-soft)}
.slot.wrong{border-color:var(--bad);background:var(--bad-soft)}
.slot-n{font-size:20px;color:var(--muted-t);font-weight:700}
.palette{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;direction:ltr;max-width:860px}
.cell{position:relative;min-width:76px;min-height:76px;border-radius:16px;border:2px solid var(--line2);background:var(--card);display:grid;place-items:center;padding:10px 8px 4px}
.cell:hover{border-color:var(--accent);background:var(--accent-soft)}
.cell kbd{position:absolute;top:4px;left:6px;font-size:11px}
.rh-actions{display:flex;gap:12px;flex-wrap:wrap;justify-content:center}
.rh-answer{display:flex;flex-direction:column;align-items:center;gap:6px}
.nt{display:block;overflow:visible}
.nt .ln{stroke:var(--line2);stroke-width:1.4}
.nt .nh{fill:var(--text)}
.nt .nh.hol{fill:none;stroke:var(--text);stroke-width:1.8}
.nt .sm{stroke:var(--text);stroke-width:1.8}
.nt .bm{stroke:var(--text);stroke-width:4.2}
.nt .rs{fill:var(--text);stroke:var(--text)}
.nt .tri{fill:var(--text);font-size:11px;font-weight:700;font-family:var(--font)}
.tap-pad{width:min(520px,100%);min-height:180px;border-radius:28px;border:3px solid var(--line2);background:var(--card2);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;font-size:24px;touch-action:manipulation;user-select:none;transition:background .08s,border-color .08s}
.tap-pad.live{border-color:var(--accent);background:var(--accent-soft)}
.tap-pad.hit{animation:hit .14s ease}
.tap-pad.early{animation:shake .2s ease}
.tap-pad:disabled{opacity:.6}
@keyframes hit{50%{transform:scale(.97);background:var(--accent-fill);color:var(--on-accent)}}
@keyframes shake{25%{transform:translateX(-4px)}75%{transform:translateX(4px)}}

/* ---------- summaries ---------- */
.sum{display:flex;flex-direction:column;gap:14px;align-items:center;text-align:center}
.sum-score{display:flex;flex-direction:column;align-items:center}
.sum-score b{font-size:56px;font-weight:800;line-height:1;direction:ltr;font-variant-numeric:tabular-nums}
.sum-score span{color:var(--muted-t);font-size:17px}
.sum-pts{font-size:18px;font-weight:600}
.sum-streak{font-size:17px}
.sum-streak.big{font-size:22px}
.sum-extra{font-size:16px}
.sum-next{margin:0;font-weight:600;background:var(--accent-soft);border-radius:14px;padding:10px 16px}
.sum-conf{align-self:stretch;text-align:start;background:var(--card2);border-radius:16px;padding:12px 16px}
.sum-conf ul{margin:6px 0 0;padding-inline-start:20px}
.sum-wo{align-self:stretch;text-align:start}
.unlock{display:flex;flex-direction:column;align-items:center;gap:2px;padding:14px 22px;border-radius:20px;background:var(--good-soft);border:2px solid var(--good);animation:pop .6s cubic-bezier(.2,1.4,.4,1)}
.unlock b{font-size:21px}
.unlock-i{font-size:34px;animation:wiggle 1s ease .4s 2}
@keyframes pop{0%{transform:scale(.6);opacity:0}100%{transform:none;opacity:1}}
@keyframes wiggle{25%{transform:rotate(-12deg)}75%{transform:rotate(12deg)}}

/* ---------- progress ---------- */
.prog-grid{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(300px,1fr);gap:22px;align-items:start}
.chart{background:var(--card2);border-radius:16px;padding:10px;border:1px solid var(--line)}
.chart svg{display:block;width:100%;height:auto}
.chart .empty{height:200px;display:grid;place-items:center;color:var(--muted-t)}
.chart .gl{stroke:var(--line);stroke-width:1}
.chart .gl.th{stroke:var(--good);stroke-dasharray:4 4}
.chart .ax{fill:var(--muted);font-size:12px;font-family:var(--font)}
.chart .ln-acc{fill:none;stroke:var(--accent);stroke-width:3;stroke-linejoin:round;stroke-linecap:round}
.chart .pt{fill:var(--card);stroke:var(--accent);stroke-width:3}
.tbl{width:100%;border-collapse:collapse;font-size:15px}
.tbl th{font-size:13px;color:var(--muted-t);font-weight:600;text-align:start;padding:6px 8px;border-bottom:1px solid var(--line)}
.tbl td{padding:9px 8px;border-bottom:1px solid var(--line)}
.tbl .num{font-variant-numeric:tabular-nums}
.pctb{display:inline-block;min-width:52px;text-align:center;padding:2px 8px;border-radius:99px;background:var(--warn-soft);font-weight:700}
.pctb.good{background:var(--good-soft)} .pctb.low{background:var(--bad-soft)}
.cal{display:grid;grid-template-columns:repeat(7,1fr);gap:6px}
.cal-h{text-align:center;font-size:13px;color:var(--muted-t);font-weight:600}
.cal-d{aspect-ratio:1;border-radius:12px;display:grid;place-items:center;font-size:13.5px;background:var(--card2);color:var(--muted-t);font-variant-numeric:tabular-nums}
.cal-d.on{background:var(--accent-soft);color:var(--text);font-weight:700}
.cal-d.full{background:var(--accent-fill);color:var(--on-accent)}
.cal-d.today{box-shadow:0 0 0 2px var(--accent)}
.cal-d.fut{opacity:.35}
.hist{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.hist li{display:grid;grid-template-columns:auto 1fr auto auto;gap:4px 12px;align-items:center;padding:10px 12px;border-radius:14px;background:var(--card2)}
.hist li.empty{display:block}
.hist .kind{font-size:12.5px;font-weight:700;padding:2px 10px;border-radius:99px;background:var(--accent-soft);color:var(--accent-t)}

/* ---------- settings ---------- */
.set-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:22px;align-items:start}
.about p{margin:0}
.lic{margin:0;padding-inline-start:20px}
.imp-err{color:var(--bad-t);font-weight:600}

/* ---------- modal + toast ---------- */
.modal{position:fixed;inset:0;z-index:60;background:rgba(40,25,15,.38);display:grid;place-items:center;padding:20px}
.modal-box{background:var(--card);border-radius:24px;padding:26px;width:min(520px,100%);max-height:92vh;overflow:auto;display:flex;flex-direction:column;gap:16px;box-shadow:0 20px 60px rgba(0,0,0,.25)}
.modal.wide .modal-box{width:min(600px,100%)}
.modal-box h2{font-size:22px;text-align:center}
.modal-box p{margin:0}
#modalBody{display:flex;flex-direction:column;gap:12px}
#modalActions{justify-content:center}
.toast{position:fixed;bottom:calc(96px + env(safe-area-inset-bottom));left:50%;transform:translateX(-50%) translateY(30px);background:var(--text);color:var(--bg);padding:12px 22px;border-radius:16px;font-size:15px;opacity:0;pointer-events:none;transition:.25s;z-index:70;max-width:min(92vw,640px);text-align:center;box-shadow:0 10px 30px rgba(0,0,0,.2)}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ---------- tablet + mobile: bottom navigation bar ---------- */
@media (max-width:1200px){
  .main{padding:18px 22px calc(110px + env(safe-area-inset-bottom))}
  .home-grid,.prog-grid,.set-grid{grid-template-columns:minmax(0,1fr)}
  .prac-cards{grid-template-columns:repeat(auto-fill,minmax(300px,1fr))}
  .ws-grid{grid-template-columns:minmax(0,1fr)}
  .seg>*{min-height:56px}
  .link{min-height:56px}
  .ans{min-height:72px}
  .btn{min-height:56px}
}
@media (max-width:1200px) and (min-width:1000px){
  .home-grid{grid-template-columns:minmax(0,1.25fr) minmax(0,1fr)}
  .prog-grid{grid-template-columns:minmax(0,1.4fr) minmax(0,1fr)}
}
@media (max-width:900px){
  .answers.opts.n4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .answers.opts{grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}
}
@media (max-width:640px){
  .main{padding:14px 12px 104px}
  .answers.opts.n3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stats{padding:10px} .stat-v{font-size:24px}
  .hello h1{font-size:26px} .scr-h h1{font-size:26px}
  .staff{grid-template-columns:repeat(4,minmax(58px,1fr));gap:6px;padding:6px}
  .wo-list li{flex-wrap:wrap}
}
@media (max-width:640px){
  .prac-cards{grid-template-columns:minmax(0,1fr)}
  .lv-all{display:inline-flex;align-self:center}
  .mod-card:not(.open) .lv-list li:not(.near){display:none}
  .ws-mods{grid-template-columns:repeat(2,minmax(0,1fr))}
  .solf{grid-template-columns:repeat(4,minmax(0,1fr))}
  .read-staff{grid-template-columns:repeat(4,minmax(58px,1fr))}
  .ws-save{flex-wrap:wrap}
  .seg{flex-wrap:wrap}
  .stage{padding:16px 12px}
  .ctl-row .btn.lg{padding:10px 16px;font-size:15.5px}
  .stage-top{gap:8px 12px}
  .st-ttl{flex-basis:100%;order:-1}
  .st-ttl h1{font-size:20px}
  .st-count{flex-direction:row;gap:8px;align-items:baseline}
  .stage-top .btn{margin-inline-start:auto}
  .ni-hint,.inst-hint{display:none}
}
@media (prefers-reduced-motion:reduce){ *{transition:none!important;animation:none!important;scroll-behavior:auto!important} }

.rh-hold{display:flex;justify-content:center;margin:6px 0}
.rh-hold[hidden]{display:none}
.pk-l{position:absolute;bottom:12px;left:0;right:0;text-align:center;font-size:12px;color:var(--muted-t, #83715f);pointer-events:none}

/* =====================================================================
   "Console" skin (default): dark pro-audio look. Warm Sand above stays available via data-skin="sand".
   Fonts are bundled (assets/fonts, SIL OFL 1.1) so the app works fully offline.
   ===================================================================== */
@font-face{font-family:"Rubik";font-style:normal;font-weight:300 900;font-display:swap;src:url(../assets/fonts/rubik-hebrew.woff2) format("woff2");unicode-range:U+0307-0308,U+0590-05FF,U+200C-2010,U+20AA,U+25CC,U+FB1D-FB4F}
@font-face{font-family:"Rubik";font-style:normal;font-weight:300 900;font-display:swap;src:url(../assets/fonts/rubik-latin.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"JetBrains Mono";font-style:normal;font-weight:400 800;font-display:swap;src:url(../assets/fonts/jetbrains-mono-latin.woff2) format("woff2");unicode-range:U+0000-00FF,U+2000-206F,U+2212}
html:not([data-skin="sand"]){
  --bg:#dde0e4; --bg2:#cfd3d8; --card:#f2f3f5; --card2:#e6e8ec; --line:#c5cad1; --line2:#9aa1ab;
  --text:#15181c; --muted:#4e5763; --dim:#7b838e;
  --accent:#c26a00; --accent2:#a65a00; --accent-soft:#f6e3c4; --on-accent:#ffffff;
  --good:#12a46b; --warn:#c98a00; --bad:#d93a40; --good-soft:#d3efe2; --warn-soft:#f5e7c4; --bad-soft:#f8d9da;
  --radius:8px; --shadow:0 1px 0 rgba(255,255,255,.7) inset, 0 1px 2px rgba(0,0,0,.08);
  --font:"Rubik","Heebo","Segoe UI","Arial Hebrew",Arial,sans-serif;
  --mono:"JetBrains Mono","Rubik",ui-monospace,monospace;
  --muted-t:#46505b; --accent-t:#8a4a00; --good-t:#0b6b45; --bad-t:#a8262c; --warn-t:#7f5700;
  --accent-fill:#9a5400; --accent-fill2:#844800;
  --key-w:#f7f8fa; --key-w-line:#7d858f; --key-b:#14171b; --led:#12a46b;
  color-scheme:light;
}
html:not([data-skin="sand"])[data-theme="dark"]{
  --bg:#0f1216; --bg2:#0a0c0f; --card:#171b21; --card2:#1f252d; --line:#2a3039; --line2:#3d4550;
  --text:#e7eaee; --muted:#9aa4b1; --dim:#68727e;
  --accent:#ffb020; --accent2:#e89a00; --accent-soft:#3a2d12; --on-accent:#1a1206;
  --good:#3ddc97; --warn:#f5c451; --bad:#ff5a5f; --good-soft:#12302a; --warn-soft:#352d14; --bad-soft:#3b1a1d;
  --shadow:0 1px 0 rgba(255,255,255,.04) inset, 0 2px 8px rgba(0,0,0,.35);
  --muted-t:#a6b0bc; --accent-t:#ffc24d; --good-t:#5ee6aa; --bad-t:#ff8a8e; --warn-t:var(--warn);
  --accent-fill:#ffb020; --accent-fill2:#ffc24d;
  --key-w:#eceef1; --key-w-line:#0a0c0f; --key-b:#0c0e11; --led:#3ddc97;
  color-scheme:dark;
}
html:not([data-skin="sand"]) body{letter-spacing:.005em}
html:not([data-skin="sand"]) :focus-visible:not(h1){outline:2px solid var(--accent);outline-offset:2px;box-shadow:0 0 0 5px var(--accent-soft)}
/* numbers in mono */
html:not([data-skin="sand"]) :is(.stat-v,.st-count b,.sum-score b,.tb-chip b,.tbl .num,.cal-d,.wo-sc,.lv-n,.pctb,kbd,.chart .ax,#volV,#bpmV,#goalV){font-family:var(--mono);font-variant-numeric:tabular-nums}
/* panels: flat hardware look with a hairline top highlight */
html:not([data-skin="sand"]) :is(.card,.stats){background:linear-gradient(180deg,var(--card2),var(--card) 60px);border-color:var(--line)}
html:not([data-skin="sand"]) .side::before{border-radius:10px;background:var(--card)}
html:not([data-skin="sand"]) .brand{border-radius:8px;box-shadow:0 0 18px color-mix(in srgb,var(--accent) 35%,transparent)}
html:not([data-skin="sand"]) .nav-i{border-radius:6px}
html:not([data-skin="sand"]) .nav-i.on{box-shadow:inset 0 3px 0 var(--accent)}
html:not([data-skin="sand"]) :is(.card-h h2,.fam-h,.h2,.mod-h){letter-spacing:.02em}
html:not([data-skin="sand"]) :is(.btn,.seg,.seg>*,.tb-chip,.theme-btn,.install-btn,.pctb,.hist .kind){border-radius:6px}
html:not([data-skin="sand"]) :is(.wo-list li,.lv,.ans,.cell,.slot,.tin,.note,.chart,.sum-conf,.hist li,.ws-presets li,.piano,.staff,.unlock,.feedback,.cal-d,.wo-ic,.mm-ic,.modal-box,.toast,.tap-pad){border-radius:6px}
html:not([data-skin="sand"]) .lv-n,html:not([data-skin="sand"]) .tick{border-radius:4px}
html:not([data-skin="sand"]) .btn.primary{box-shadow:0 0 0 1px var(--accent-fill),0 0 16px color-mix(in srgb,var(--accent) 30%,transparent)}
html:not([data-skin="sand"]) .install-btn{color:var(--on-accent)}
html:not([data-skin="sand"]) .seg>.on{background:var(--card2);box-shadow:inset 0 -2px 0 var(--accent)}
html:not([data-skin="sand"]) .bar{border-radius:2px;background:var(--bg2);box-shadow:inset 0 1px 2px rgba(0,0,0,.3)}
html:not([data-skin="sand"]) .bar i{border-radius:2px;background:linear-gradient(90deg,var(--accent2),var(--accent))}
html:not([data-skin="sand"]) .bar.done i{background:var(--good)}
html:not([data-skin="sand"]) :is(.wo-list li.done .tick,.lv.full .lv-n){color:var(--bg)}
html:not([data-skin="sand"])[data-theme="light"] :is(.wo-list li.done .tick,.lv.full .lv-n){color:#fff;background:var(--good-t);border-color:var(--good-t)}
html:not([data-skin="sand"]) .ans{border-width:1px;background:var(--card2)}
html:not([data-skin="sand"]) .ans.right{box-shadow:0 0 0 1px var(--good),0 0 14px color-mix(in srgb,var(--good) 30%,transparent)}
html:not([data-skin="sand"]) .ans.wrong{box-shadow:0 0 0 1px var(--bad)}
html:not([data-skin="sand"]) .st-mod{text-transform:uppercase;letter-spacing:.08em}
html:not([data-skin="sand"]) .st-count b{color:var(--accent-t)}
html:not([data-skin="sand"]) .dot{background:var(--led);box-shadow:0 0 8px var(--led)}
html:not([data-skin="sand"]) .star.on{text-shadow:0 0 10px color-mix(in srgb,var(--warn) 60%,transparent)}
/* piano: crisp ivory / ebony in both themes */
html:not([data-skin="sand"]) .piano{background:var(--bg2);border:1px solid var(--line);padding:8px 8px 10px;box-shadow:inset 0 2px 6px rgba(0,0,0,.35)}
html:not([data-skin="sand"]) .pk{background:linear-gradient(180deg,#e3e6ea,var(--key-w) 14%);border-color:var(--key-w-line);border-radius:0 0 5px 5px}
html:not([data-skin="sand"]) .pk.blk{background:linear-gradient(180deg,#2a2f36,var(--key-b) 70%);border-color:#000;box-shadow:0 3px 4px rgba(0,0,0,.45)}
html:not([data-skin="sand"]) .pk-l{color:#4a525c}
html:not([data-skin="sand"]) .pk.first{box-shadow:inset 0 -6px 0 var(--accent)}
html:not([data-skin="sand"]) .pk.right{background:#c7f1dd;box-shadow:inset 0 -6px 0 var(--good)}
html:not([data-skin="sand"]) .pk.blk.right{background:var(--good)}
html:not([data-skin="sand"]) .pk.wrong{background:#f9d2d4;box-shadow:inset 0 -6px 0 var(--bad)}
html:not([data-skin="sand"]) .pk.blk.wrong{background:var(--bad)}
html:not([data-skin="sand"]) .chart .ln-acc{filter:drop-shadow(0 0 4px color-mix(in srgb,var(--accent) 50%,transparent))}
html:not([data-skin="sand"]) .modal{background:rgba(5,7,10,.6)}
html:not([data-skin="sand"]) .side{box-shadow:0 -2px 12px rgba(0,0,0,.3)}

/* =====================================================================
   Phones (360–430 portrait, and landscape): thumb-reach bottom bar, safe areas, piano sized for fingers
   ===================================================================== */
.piano{position:relative;overscroll-behavior-x:contain;-webkit-overflow-scrolling:touch;scrollbar-width:thin}
@media (max-width:1200px){
  .side{padding-left:max(10px,env(safe-area-inset-left));padding-right:max(10px,env(safe-area-inset-right))}
  .main{padding-left:max(22px,env(safe-area-inset-left));padding-right:max(22px,env(safe-area-inset-right));padding-top:max(18px,env(safe-area-inset-top));padding-bottom:calc(110px + env(safe-area-inset-bottom))}
  .toast{bottom:calc(96px + env(safe-area-inset-bottom))}
  .modal{padding:max(12px,env(safe-area-inset-top)) max(12px,env(safe-area-inset-right)) max(12px,env(safe-area-inset-bottom)) max(12px,env(safe-area-inset-left))}
  .modal-box{max-height:calc(100dvh - 24px - env(safe-area-inset-top) - env(safe-area-inset-bottom))}
}
@media (max-width:640px){
  .main{padding-left:max(12px,env(safe-area-inset-left));padding-right:max(12px,env(safe-area-inset-right));padding-top:max(14px,env(safe-area-inset-top));padding-bottom:calc(100px + env(safe-area-inset-bottom))}
  body{font-size:16px}
  .card{padding:16px}
  .stage{padding:14px 12px}
  /* answers: two comfortable columns instead of one long list */
  .answers.opts,.answers.opts.n3,.answers.opts.n4{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
  .answers.opts.n2{grid-template-columns:repeat(2,minmax(0,1fr))}
  .ans{min-height:68px;padding:10px 8px}
  .ans b{font-size:17px}
  /* workout list: text gets the width, icon shrinks */
  .wo-list li{gap:10px;padding:10px}
  .wo-ic,.mm-ic{width:38px;height:38px}
  .wo-ic svg{width:22px;height:22px}
  .pl-t b{font-size:15.5px}
  .modal-box{padding:18px;gap:12px}
  .modal-box .btn{white-space:normal}
  .seg{max-width:100%}
  .seg>*{padding:8px 12px}
  .tbl{font-size:14px}
  .tb-chip{padding:6px 12px}
  /* piano: finger-sized keys, black keys 2+3 still clearly between whites; the strip scrolls, the page does not */
  .piano-wrap,.inst-box{max-width:100%}
  .piano{width:100%;padding:6px;scroll-snap-type:x proximity}
  .pk{width:58px;height:150px;scroll-snap-align:start}
  .pk.blk{width:44px;height:92px;margin:0 -22px}
}
/* landscape phones: short screens – slimmer bottom bar, shorter keys so question + piano fit */
@media (max-width:1200px) and (max-height:500px) and (orientation:landscape){
  .side{padding-top:2px;padding-bottom:calc(2px + env(safe-area-inset-bottom))}
  .nav-i{min-height:48px;flex-direction:row;gap:8px;font-size:14px}
  .nav-i svg{width:22px;height:22px}
  .main{padding-top:max(10px,env(safe-area-inset-top));padding-bottom:calc(70px + env(safe-area-inset-bottom))}
  .toast{bottom:calc(64px + env(safe-area-inset-bottom))}
  .hello h1,.scr-h h1{font-size:24px}
  .pk{width:56px;height:118px}
  .pk.blk{width:44px;height:72px;margin:0 -22px}
  .answers.opts{grid-template-columns:repeat(auto-fit,minmax(140px,1fr))}
  .answers.opts.n4{grid-template-columns:repeat(4,minmax(0,1fr))}
  .ans{min-height:56px}
  .stage{padding:12px 14px}
}

/* ---------- classroom mode ---------- */
.nav-i[hidden]{display:none}
.cl-body{display:flex;flex-direction:column;gap:18px}
.cl-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;align-items:start}
.cl-grid>.col{display:flex;flex-direction:column;gap:18px;min-width:0}
.cl-hero{grid-column:1/-1;max-width:720px}
.cl-user{display:flex;align-items:center;gap:10px;flex-wrap:wrap;justify-content:space-between}
.cl-top{align-items:center}
.cl-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.cl-item{display:flex;align-items:center;justify-content:space-between;gap:10px;min-height:56px;padding:10px 16px;border:1px solid var(--line);border-radius:var(--radius);text-decoration:none;background:var(--bg)}
.cl-item:hover{border-color:var(--accent)}
.pill{display:inline-flex;align-items:center;padding:2px 10px;border-radius:999px;font-size:13px;font-weight:600;background:var(--bg2);color:var(--muted-t);white-space:nowrap}
.pill-t{background:var(--accent-soft);color:var(--accent-t)}
.pill-ok{background:var(--good-soft);color:var(--good-t)}
.cl-code{font-family:var(--mono,inherit);max-width:240px;text-transform:uppercase;letter-spacing:.15em;font-weight:700}
.cl-codebig{font-family:var(--mono,inherit);font-size:28px;font-weight:800;letter-spacing:.2em;padding:6px 16px;border-radius:var(--radius);background:var(--accent-soft);color:var(--accent-t)}
.cl-link{flex:1;min-width:200px}
.cl-unit.locked{opacity:.85;border-style:dashed}
.cl-assigns{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.cl-assign{display:flex;align-items:center;gap:12px;padding:12px 14px;border:1px solid var(--line);border-radius:var(--radius);background:var(--bg)}
.cl-assign.done{border-color:var(--good)}
.cl-a-main{flex:1;display:flex;flex-direction:column;gap:4px;min-width:0}
.cl-a-main .bar{margin-top:4px}
.cl-mods{display:flex;flex-wrap:wrap;gap:8px}
.cl-mod{min-height:48px;padding:8px 16px;border-radius:999px;border:1px solid var(--line2);background:var(--card);font-weight:600}
.cl-mod.on{background:var(--accent-soft);border-color:var(--accent);color:var(--accent-t)}
.cl-nums{align-items:flex-end}
.cl-nums .fld{flex:1;min-width:150px}
.cl-tablewrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius)}
.cl-table{border-collapse:collapse;width:100%;font-size:14.5px;font-variant-numeric:tabular-nums}
.cl-cell b{font-family:var(--mono,inherit)}
.cl-table th,.cl-table td{padding:10px 12px;border-bottom:1px solid var(--line);text-align:center;vertical-align:middle}
.cl-table thead th{background:var(--bg2);font-weight:600}
.cl-table th span{display:block}
.cl-table tbody th{text-align:start;white-space:nowrap}
.cl-cell b,.cl-cell span{display:block}
.cl-cell.ok{background:var(--good-soft);color:var(--good-t)}
.cl-cell.mid{background:var(--warn-soft)}
.cl-conf{margin:0;padding:0 20px 0 0;display:flex;flex-direction:column;gap:8px}
.cl-conf li{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.cl-conf-n{margin-inline-start:auto}
.gsi-slot{min-height:44px;display:flex;align-items:center}
.cl-body,.cl-body .card{max-width:100%;min-width:0}
.cl-body .btn,.cl-body .seg>*,.cl-mod,.cl-item,.ws-it{min-height:44px}
.cl-link{min-width:0}
.cl-body form.row{flex-wrap:wrap}
.cl-body form.row .tin{flex:1;min-width:0}
@media (max-width:900px){
  .cl-codebig{font-size:22px}
  .cl-join .row>*{flex:1 1 auto}
  .cl-link{flex-basis:100%}
  .cl-grid{grid-template-columns:1fr}
  .cl-assign{flex-wrap:wrap}
  .cl-assign .btn{width:100%}
}

/* ---------- classroom: teacher screens (Mentora console) ---------- */
.tc-head{flex-direction:row;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px}
.tc-title{display:flex;align-items:center;gap:10px;flex-wrap:wrap;min-width:0}
.tc-cname{font-size:22px;font-weight:800;margin:0;overflow-wrap:anywhere}
.tc-join{display:flex;align-items:center;gap:8px;flex-wrap:wrap;padding:8px 10px;border:1px solid var(--line);border-radius:var(--radius);background:var(--bg2)}
.tc-code{font-family:var(--mono,inherit);font-size:26px;font-weight:800;letter-spacing:.22em;padding:4px 14px;border-radius:var(--radius);background:var(--accent-soft);color:var(--accent-t);box-shadow:0 0 0 1px var(--accent) inset}
.tc-tabs{display:flex;gap:6px;flex-wrap:wrap;align-items:center;border-bottom:1px solid var(--line);padding-bottom:8px}
.tc-tab{display:inline-flex;align-items:center;min-height:44px;padding:8px 16px;border-radius:var(--radius);text-decoration:none;font-weight:700;color:var(--muted-t);border:1px solid transparent}
.tc-tab:hover{color:var(--text);background:var(--card2)}
.tc-tab.on{color:var(--accent-t);background:var(--accent-soft);border-color:var(--accent)}
.tc-csv{margin-inline-start:auto}
.tc-page{display:flex;flex-direction:column;gap:18px;min-width:0}
.tc-kpis{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px}
.tc-kpi{position:relative;display:flex;flex-direction:column;gap:2px;padding:14px 16px;border:1px solid var(--line);border-radius:var(--radius);background:var(--card);box-shadow:var(--shadow);min-width:0}
.tc-kpi b{font-family:var(--mono,inherit);font-size:28px;font-weight:800;font-variant-numeric:tabular-nums;color:var(--text)}
.tc-kpi b small{font-size:15px;color:var(--muted-t)}
.tc-kpi span{font-size:13.5px;color:var(--muted-t)}
.tc-kpi.bad b{color:var(--bad-t)}
.tc-kpi .tc-ring{position:absolute;inset-inline-end:14px;top:14px}
.tc-ring{display:inline-block;flex:none;width:34px;height:34px;border-radius:50%;background:conic-gradient(var(--good) calc(var(--p)*1%),var(--bg2) 0);-webkit-mask:radial-gradient(circle,transparent 55%,#000 56%);mask:radial-gradient(circle,transparent 55%,#000 56%)}
.tc-empty{display:flex;flex-direction:column;align-items:flex-start;gap:8px;padding:18px;border:1px dashed var(--line2);border-radius:var(--radius)}
.tc-gbwrap{max-width:100%}
.tc-gb{border-collapse:separate;border-spacing:0;width:100%;font-size:14px;font-variant-numeric:tabular-nums}
.tc-gb th,.tc-gb td{padding:8px 10px;border-bottom:1px solid var(--line);text-align:center;vertical-align:middle}
.tc-gb thead th{background:var(--bg2);font-weight:600;position:sticky;top:0}
.tc-gb th span{display:block}
.tc-gb-u{font-size:12px;color:var(--muted-t)}
.tc-gb-t{font-weight:700;max-width:170px;margin:0 auto}
.tc-gb-m{font-family:var(--mono,inherit);font-size:12px;color:var(--muted-t)}
.tc-gb-a.locked{opacity:.7}
.tc-gb .tc-gb-st{text-align:start;position:sticky;inset-inline-start:0;background:var(--card);z-index:1;min-width:150px}
.tc-gb thead .tc-gb-st{background:var(--bg2);z-index:2}
.tc-stu{display:flex;align-items:center;gap:10px;text-decoration:none;min-height:44px}
.tc-stu span{display:flex;flex-direction:column}
.tc-stu:hover b{color:var(--accent-t)}
.tc-av{display:inline-flex;align-items:center;justify-content:center;flex:none;width:34px;height:34px;border-radius:50%;background:var(--accent-soft);color:var(--accent-t);font-weight:800;font-size:13px}
.tc-av.lg{width:56px;height:56px;font-size:20px}
.tc-c b,.tc-c span{display:block}
.tc-c b{font-family:var(--mono,inherit)}
.tc-c.done{background:var(--good-soft);color:var(--good-t)}
.tc-c.prog{background:var(--warn-soft)}
.tc-c.late{background:var(--bad-soft);color:var(--bad-t)}
.tc-c.none{color:var(--muted-t)}
.tc-under{color:var(--bad-t)}
.tc-foot{background:var(--bg2)}
.tc-foot b,.tc-foot span{display:block}
.tc-gb tfoot th{background:var(--bg2);text-align:start}
.tc-legend{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:14px;font-size:13px;color:var(--muted-t)}
.tc-legend li{display:flex;align-items:center;gap:6px}
.tc-legend i{width:14px;height:14px;border-radius:4px;border:1px solid var(--line2)}
.tc-legend i.done{background:var(--good-soft)}.tc-legend i.prog{background:var(--warn-soft)}.tc-legend i.late{background:var(--bad-soft)}.tc-legend i.none{background:var(--card)}
.tc-badge{display:inline-flex;align-items:center;padding:2px 9px;border-radius:999px;font-size:12.5px;font-weight:700;background:var(--bg2);color:var(--muted-t);white-space:nowrap}
.tc-badge.bad,.tc-badge.late{background:var(--bad-soft);color:var(--bad-t)}
.tc-badge.done{background:var(--good-soft);color:var(--good-t)}
.tc-badge.prog{background:var(--warn-soft);color:var(--text)}
.cl-sum .tc-badge{margin-top:4px}
.tc-conf{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.tc-conf li{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:8px 12px;border:1px solid var(--line);border-radius:var(--radius);background:var(--bg)}
.tc-pair{display:inline-flex;align-items:center;gap:6px;font-family:var(--mono,inherit);font-weight:800}
.tc-pair bdi{padding:2px 8px;border-radius:6px;background:var(--bg2)}
.tc-pair i{font-style:normal;color:var(--bad-t)}
.tc-students{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.tc-srow{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:10px 12px;border:1px solid var(--line);border-radius:var(--radius);background:var(--bg)}
.tc-sinfo{flex:1;display:flex;flex-direction:column;min-width:180px}
.tc-sinfo small{overflow-wrap:anywhere}
.tc-sacts{display:flex;gap:8px;flex-wrap:wrap}
.tc-stuhead{flex-direction:row;align-items:center;flex-wrap:wrap;gap:16px}
.tc-stuhead>div:not(.tc-sacts){flex:1;display:flex;flex-direction:column;min-width:0}
.tc-stuhead h2{margin:0;font-size:22px}
.tc-arows{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.tc-arow{display:flex;flex-direction:column;gap:6px;padding:12px;border:1px solid var(--line);border-inline-start:4px solid var(--line2);border-radius:var(--radius);background:var(--bg)}
.tc-arow.done{border-inline-start-color:var(--good)}.tc-arow.late{border-inline-start-color:var(--bad)}.tc-arow.prog{border-inline-start-color:var(--warn)}
.tc-arow-h{display:flex;justify-content:space-between;gap:8px;align-items:center}
.tc-meter{display:grid;grid-template-columns:52px 1fr auto;gap:10px;align-items:center}
.tc-meter b{font-family:var(--mono,inherit)}
.tc-accbar{overflow:visible}
.tc-accbar em{position:absolute;top:-3px;bottom:-3px;width:2px;background:var(--text);opacity:.8}
.tc-weak{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.tc-weak li{display:grid;grid-template-columns:minmax(60px,auto) 1fr 110px auto;gap:10px;align-items:center}
.tc-weak b bdi{font-family:var(--mono,inherit)}
.tc-units{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:14px}
.tc-unit-h{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.tc-num{display:inline-flex;align-items:center;justify-content:center;flex:none;width:40px;height:40px;border-radius:var(--radius);background:var(--bg2);font-family:var(--mono,inherit);font-weight:800;font-size:18px}
.tc-unit.open .tc-num{background:var(--accent-soft);color:var(--accent-t)}
.tc-unit-t{flex:1;display:flex;flex-direction:column;min-width:0}
.tc-unit-t b{font-size:17px;overflow-wrap:anywhere}
.tc-open{color:var(--good-t)}
.tc-switch{display:inline-flex;align-items:center;gap:8px;min-height:44px;cursor:pointer;font-weight:700}
.tc-switch input{position:absolute;opacity:0;width:1px;height:1px}
.tc-switch span{position:relative;width:52px;height:30px;border-radius:999px;background:var(--bg2);border:1px solid var(--line2);transition:.2s}
.tc-switch span::after{content:"";position:absolute;top:3px;inset-inline-start:3px;width:22px;height:22px;border-radius:50%;background:var(--muted);transition:.2s}
.tc-switch input:checked+span{background:var(--good-soft);border-color:var(--good)}
.tc-switch input:checked+span::after{inset-inline-start:25px;background:var(--good)}
.tc-switch input:focus-visible+span{outline:2px solid var(--accent);outline-offset:2px}
.tc-aacts{display:flex;gap:6px;flex-wrap:wrap}
.tc-editor{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:18px;align-items:start}
.tc-ed-main{display:flex;flex-direction:column;gap:18px;min-width:0}
.tc-ed-side{display:flex;flex-direction:column;gap:14px;position:sticky;top:12px;min-width:0}
.tc-items-h{display:flex;align-items:center;justify-content:space-between;gap:8px;flex-wrap:wrap}
.tc-items-h>span:first-child{font-size:14.5px;color:var(--muted-t);font-weight:500}
.tc-nums{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.tc-err{margin:0;color:var(--bad-t);font-size:13.5px;font-weight:600}
.tc-err:empty,.tc-warn:empty{display:none}
.tc-warn{margin:0;color:var(--warn-t);font-size:13.5px}
.tc-ok{margin:0;color:var(--good-t);font-weight:700}
.tin[aria-invalid="true"]{border-color:var(--bad);box-shadow:0 0 0 3px var(--bad-soft)}
#aeSave[aria-disabled="true"]{opacity:.6}
.tc-chips{display:flex;flex-wrap:wrap;gap:6px}
.tc-chip{font-family:var(--mono,inherit);font-size:13px;font-weight:700;padding:2px 8px;border-radius:6px;background:var(--accent-soft);color:var(--accent-t)}
.tc-pv-facts{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:6px}
.tc-pv-facts li{display:flex;justify-content:space-between;gap:10px;padding:6px 0;border-bottom:1px dashed var(--line);font-size:14px}
.tc-pv-facts span{color:var(--muted-t)}
@media (max-width:1100px){ .tc-kpis{grid-template-columns:repeat(3,minmax(0,1fr))} .tc-editor{grid-template-columns:1fr} .tc-ed-side{position:static} }
@media (max-width:640px){
  .tc-kpis{grid-template-columns:repeat(2,minmax(0,1fr))}
  .tc-kpi b{font-size:22px}
  .tc-code{font-size:22px}
  .tc-join{width:100%}
  .tc-csv{margin-inline-start:0}
  .tc-tab{flex:1 1 auto;justify-content:center;padding:8px 10px}
  .tc-nums{grid-template-columns:1fr}
  .tc-weak li{grid-template-columns:auto 1fr auto}
  .tc-weak li .muted{display:none}
  .tc-srow .tc-sacts,.tc-stuhead .tc-sacts{width:100%}
  .tc-sacts .btn{flex:1}
  .tc-gb .tc-gb-st{min-width:120px}
}
.tc-stu{display:flex;align-items:center;gap:10px;min-height:44px;color:inherit;text-decoration:none}
.tc-stu>span:last-child{display:flex;flex-direction:column;gap:2px;min-width:0}
.tc-stu b{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tc-av{line-height:1;letter-spacing:0;overflow:hidden}
.tc-stu .tc-av{display:inline-flex;flex-direction:row}
.tc-stu>span:last-child>b,.tc-stu>span:last-child>small{display:block}
@media (max-width:640px){
  .tc-unit .cl-assign .cl-a-main{flex:1 1 100%}
  .tc-unit .tc-aacts{width:100%;display:grid;grid-template-columns:repeat(4,1fr);gap:6px}
  .tc-unit .tc-aacts .btn{width:auto;min-width:0;padding-inline:8px}
  .tc-unit .tc-aacts [data-preview]{grid-column:1/-1;order:9;white-space:normal} /* ▲ ▼ edit delete, then the long preview button on its own row */
}

/* ---------- classroom: tracking & assessment (grades) ---------- */
.tc-kpi.warn b{color:var(--warn-t)} .tc-kpi.bad b{color:var(--bad-t)}
.gr-warn{border-color:var(--warn);background:var(--warn-soft)}
.gr-tools{display:flex;flex-direction:column;gap:12px}
.gr-tools-row{display:flex;gap:10px;align-items:end;flex-wrap:wrap}
.gr-search{flex:1 1 220px} .gr-search .tin{width:100%;min-height:44px}
.gr-sort{display:flex;flex-direction:column;gap:4px} .gr-sort select{min-height:44px}
.gr-acts{display:flex;gap:8px;flex-wrap:wrap;margin-inline-start:auto}
.gr-acts .btn{min-height:44px}
.gr-filter{align-self:flex-start}
.gr-weights summary{cursor:pointer;font-weight:800;display:flex;gap:10px;align-items:center;flex-wrap:wrap;min-height:44px}
.gr-wgrid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin:12px 0}
.gr-wgrid .tin{width:100%;min-height:44px}
.gr-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:12px}
.gr-row{display:grid;grid-template-columns:minmax(180px,1.1fr) minmax(0,2.4fr) minmax(260px,1.3fr);gap:16px;align-items:center}
.gr-row.att{box-shadow:inset 3px 0 0 var(--warn)}
.gr-who{display:flex;gap:10px;align-items:center;min-width:0}
.gr-name{display:flex;flex-direction:column;gap:6px;min-width:0}
.gr-name a{color:inherit;text-decoration:none;min-height:24px} .gr-name a:hover b{color:var(--accent-t)}
.gr-badges{display:flex;gap:4px;flex-wrap:wrap}
.tc-badge.ok{background:var(--good-soft);color:var(--good-t)}
.tc-badge.warn{background:var(--warn-soft);color:var(--warn-t)}
.tc-badge.bad{background:var(--bad-soft);color:var(--bad-t)}
.gr-stats{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:10px;margin:0}
.gr-stats>div{background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:8px 10px;min-width:0}
.gr-stats dt{font-size:12px;color:var(--muted-t)}
.gr-stats dd{margin:2px 0 0;font-weight:800;font-size:18px;font-variant-numeric:tabular-nums;display:flex;flex-direction:column}
.gr-stats dd small{font-weight:500;font-size:11px;color:var(--muted-t)}
.gr-trend.up{color:var(--good-t)} .gr-trend.down{color:var(--bad-t)} .gr-late.bad{color:var(--bad-t)}
.gr-grade{display:grid;grid-template-columns:1fr 1fr;gap:10px;align-items:start}
.gr-grade .btn{grid-column:1/-1;min-height:44px}
.gr-sug,.gr-fin{display:flex;flex-direction:column;gap:4px}
.gr-big{font-size:34px;line-height:1;font-weight:900;font-variant-numeric:tabular-nums}
.gr-big.hi{color:var(--good-t)} .gr-big.mid{color:var(--warn-t)} .gr-big.lo{color:var(--bad-t)} .gr-big.none{color:var(--muted-t)}
.gr-bar{display:flex;height:8px;border-radius:99px;overflow:hidden;background:var(--bg2);border:1px solid var(--line)}
.gr-bar i{display:block;height:100%} .gr-bar .c{background:var(--accent)} .gr-bar .a{background:var(--good)} .gr-bar .o{background:var(--warn)}
.gr-bd{color:var(--muted-t)}
.gr-comment{grid-column:1/-1;margin:0;padding:10px 12px;border-radius:12px;background:var(--bg2);border:1px solid var(--line);font-style:italic;overflow-wrap:anywhere}
.gr-finrow{display:flex;gap:10px;align-items:end;flex-wrap:wrap} .gr-finrow .fld{flex:1 1 140px}
#modal .tin{width:100%;min-height:44px} #modal textarea.tin{min-height:110px;resize:vertical}
.gr-tpls{display:flex;flex-wrap:wrap;gap:6px;margin:8px 0}
.gr-tpl{min-height:44px;text-align:start;white-space:normal}
.gr-pub{display:flex;gap:10px;align-items:center;min-height:44px;font-weight:700}
.gr-pub input{width:22px;height:22px}
.gr-mine-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.gr-mine-list li{padding:12px;border:1px solid var(--line);border-radius:12px;background:var(--bg2)}
.gr-mine-h{display:flex;justify-content:space-between;align-items:center;gap:10px}
.gr-mine .gr-big{color:var(--accent-t)}
.gr-rtable{width:100%;border-collapse:collapse} .gr-rtable th,.gr-rtable td{padding:8px;border-bottom:1px solid var(--line);text-align:start;vertical-align:top}
.gr-rc{max-width:420px;overflow-wrap:anywhere}
@media (max-width:1100px){ .gr-row{grid-template-columns:1fr} .gr-wgrid{grid-template-columns:repeat(2,minmax(0,1fr))} }
@media (max-width:640px){
  .gr-stats{grid-template-columns:repeat(2,minmax(0,1fr))}
  .gr-stats>div:last-child{grid-column:1/-1}
  .gr-acts{margin-inline-start:0;width:100%} .gr-acts .btn{flex:1}
  .gr-sort{width:100%} .gr-filter{width:100%} .gr-filter>*{flex:1 1 40%}
  .gr-wgrid{grid-template-columns:1fr 1fr}
}
@media print{
  .side,.topbar,.tc-head,.tc-tabs,.cl-user,.no-print,#toast,.bottom-nav{display:none!important}
  body,.card{background:#fff!important;color:#000!important;box-shadow:none!important;border-color:#ccc!important}
  .gr-rtable th,.gr-rtable td{color:#000!important;border-color:#bbb!important}
}

/* ---------- classroom: tracking & assessment – calm card grid (design B) ---------- */
.gb-mono{font-family:var(--mono,"JetBrains Mono",monospace);font-variant-numeric:tabular-nums}
.gb-dim{color:var(--muted-t);font-size:13px}
.gb-warn{padding:10px 14px;border-radius:12px;border:1px solid color-mix(in srgb,var(--warn) 45%,var(--line));color:var(--text);margin-bottom:14px;font-size:14px}
.gb-top{display:flex;justify-content:space-between;align-items:flex-end;gap:16px;flex-wrap:wrap;margin:4px 0 14px}
.gb-h{font-size:24px;font-weight:700;margin:0 0 4px}
.gb-sum{color:var(--muted);font-size:15px;margin:0} .gb-sum b{color:var(--text)}
.gb-acts{display:flex;gap:8px;flex-wrap:wrap}
.gb-q{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:8px 14px;border-radius:10px;border:1px solid var(--line2);background:transparent;color:var(--text);font:inherit;font-size:14px;text-decoration:none;cursor:pointer}
.gb-q:hover{background:var(--card2)} .gb-q[disabled]{opacity:.5;cursor:not-allowed}
.gb-tools{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-bottom:12px}
.gb-in{background:var(--bg2);border:1px solid var(--line);color:var(--text);border-radius:10px;padding:8px 12px;font:inherit;font-size:14px;min-height:44px;width:100%}
.gb-in:focus{outline:2px solid var(--accent);outline-offset:1px}
.gb-search{flex:1 1 220px} .gb-sort{flex:0 1 240px}
.gb-filter{display:flex;gap:2px;flex-wrap:wrap}
.gb-filter button{min-height:44px;padding:8px 12px;border:0;border-bottom:2px solid transparent;background:transparent;color:var(--muted);font:inherit;font-size:14px;cursor:pointer}
.gb-filter button.on{color:var(--text);border-bottom-color:var(--accent);font-weight:600}
.gb-legend{display:flex;gap:16px;align-items:center;flex-wrap:wrap;font-size:13px;color:var(--muted);margin-bottom:16px}
.gb-legend>span{display:flex;gap:6px;align-items:center}
.gb-dot{width:8px;height:8px;border-radius:50%;display:inline-block;flex:none;background:var(--dim)}
.gb-dot.risk{background:var(--bad)} .gb-dot.watch{background:var(--warn)} .gb-dot.top{background:var(--good)}
.g-risk{color:var(--bad-t)} .g-watch{color:var(--warn-t)} .g-ok{color:var(--text)} .g-top{color:var(--good-t)}
.gb-weights{margin-inline-start:auto}
.gb-weights summary{cursor:pointer;color:var(--muted);min-height:44px;display:flex;align-items:center;gap:8px;list-style:none}
.gb-weights summary::-webkit-details-marker{display:none}
.gb-weights[open]{flex-basis:100%;margin-inline-start:0}
.gb-wbody{border-top:1px solid var(--line);padding-top:10px;margin-top:4px}
.gb-wacts{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.gb-grid{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.gb-card{min-width:0}
.gb-open{width:100%;height:100%;text-align:start;font:inherit;color:inherit;cursor:pointer;background:var(--card);border:1px solid var(--line);border-radius:18px;padding:18px 18px 16px;display:flex;flex-direction:column;gap:10px;min-height:196px;transition:border-color .15s,transform .15s}
.gb-open:hover{border-color:var(--line2);transform:translateY(-1px)}
.gb-open:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.gb-card.risk .gb-open{border-color:color-mix(in srgb,var(--bad) 45%,var(--line))}
.gb-hd{display:flex;align-items:center;justify-content:space-between;gap:8px}
.gb-nm{font-weight:600;font-size:16px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.gb-hero{display:flex;align-items:baseline;gap:6px}
.gb-hero b{font-size:56px;font-weight:700;line-height:1;letter-spacing:-.02em}
.gb-hero small{font-size:15px;color:var(--muted)}
.gb-line{font-size:14px;color:var(--muted);line-height:1.45;flex:1}
.gb-card.risk .gb-line{color:var(--bad-t)}
.gb-meta{display:flex;justify-content:space-between;gap:8px;font-size:13px;color:var(--muted-t);border-top:1px solid var(--line);padding-top:10px}
.gb-pub{color:var(--muted-t)} .gb-pub.on{color:var(--good-t)}
.gb-empty{color:var(--muted);padding:24px 0}
/* drawer */
body.gb-lock{overflow:hidden}
.gb-scrim{position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:80}
.gb-drawer{position:fixed;top:0;bottom:0;inset-inline-end:0;width:min(520px,100vw);background:var(--card);border-inline-start:1px solid var(--line);z-index:81;display:flex;flex-direction:column;box-shadow:0 0 40px rgba(0,0,0,.4)}
.gb-dr-h{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;padding:18px 20px;border-bottom:1px solid var(--line)}
.gb-dr-h h2{font-size:20px;margin:0 0 4px} .gb-dr-h .gb-dim{display:flex;gap:6px;align-items:center;flex-wrap:wrap}
.gb-x{min-width:44px;min-height:44px;border-radius:10px;border:1px solid var(--line);background:transparent;color:var(--text);font-size:16px;cursor:pointer}
.gb-dr-body{flex:1;overflow:auto;padding:16px 20px;display:flex;flex-direction:column;gap:18px}
.gb-sec{display:flex;flex-direction:column;gap:10px}
.gb-sec+.gb-sec{border-top:1px solid var(--line);padding-top:16px}
.gb-sec h3{font-size:16px;margin:0}
.gb-sug{display:flex;align-items:baseline;gap:10px} .gb-sug b{font-size:44px;font-weight:700;line-height:1}
.gb-bd{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.gb-bd li{display:grid;grid-template-columns:minmax(120px,1fr) 2fr 48px;gap:10px;align-items:center;font-size:14px}
.gb-mbar{height:6px;border-radius:99px;background:var(--bg2);overflow:hidden} .gb-mbar i{display:block;height:100%;background:var(--muted)}
.gb-facts{display:grid;grid-template-columns:1fr 1fr;gap:6px 16px;margin:0;font-size:14px}
.gb-facts dt{color:var(--muted-t);font-size:12px} .gb-facts dd{margin:0}
.gb-facts .gr-trend.up{color:var(--good-t)} .gb-facts .gr-trend.down{color:var(--bad-t)}
.gb-link{color:var(--muted);font-size:14px;min-height:44px;display:inline-flex;align-items:center}
.gb-chip{min-height:44px;padding:8px 12px;border-radius:10px;border:1px solid var(--line);background:transparent;color:var(--muted);font:inherit;font-size:13px;text-align:start;cursor:pointer}
.gb-chip:hover{color:var(--text);border-color:var(--line2)}
.gb-drawer textarea.gb-in{min-height:110px;resize:vertical}
.gb-dr-f{display:flex;gap:10px;padding:14px 20px;border-top:1px solid var(--line)}
.gb-dr-f .btn{min-height:44px;flex:1}
@media (max-width:1100px){ .gb-grid{grid-template-columns:repeat(3,minmax(0,1fr))} }
@media (max-width:640px){
  .gb-grid{grid-template-columns:1fr 1fr;gap:10px}
  .gb-open{padding:14px;min-height:170px;border-radius:16px}
  .gb-hero b{font-size:42px} .gb-line{font-size:13px}
  .gb-meta{flex-direction:column;gap:2px}
  .gb-acts{width:100%} .gb-acts .gb-q{flex:1}
  .gb-sort{flex:1 1 100%}
  .gb-filter{width:100%;overflow-x:auto;flex-wrap:nowrap} .gb-filter button{white-space:nowrap}
  .gb-weights{margin-inline-start:0;flex-basis:100%}
  .gb-drawer{top:auto;max-height:92vh;width:100vw;border-radius:18px 18px 0 0;border-inline-start:0;border-top:1px solid var(--line)}
  .gb-bd li{grid-template-columns:1fr 1fr 44px}
  .gb-facts{grid-template-columns:1fr}
}
.tc-tabs:has(#tab-grades.on) .tc-csv{display:none} /* the tracking tab has its own quiet export links */
.gb-legend{margin-bottom:8px}

/* ---------- teacher mode: a separate app shell (no practice, no gamification) ---------- */
body.teacher-mode .nav-i[data-route],body.teacher-mode #tbStreak,body.teacher-mode #tbPoints,body.teacher-mode #playPts,body.teacher-mode #tbSettings,body.teacher-mode .tc-tabs{display:none!important}
.nav .tnav{border:0;background:none;font:inherit;cursor:pointer;width:auto;flex:1;min-width:0}
.tmore{position:fixed;z-index:40;bottom:calc(84px + env(safe-area-inset-bottom));left:50%;transform:translateX(-50%);width:min(420px,calc(100% - 16px));background:var(--card);border:1px solid var(--line);border-radius:14px;padding:8px;display:flex;flex-direction:column;gap:4px;box-shadow:0 12px 32px rgba(0,0,0,.35)}
.tmore[hidden]{display:none!important}
.tmore-link{display:flex;align-items:center;gap:10px;min-height:48px;padding:8px 12px;border-radius:8px;border:0;background:transparent;color:var(--text);font:inherit;font-weight:600;text-align:start;text-decoration:none;cursor:pointer;width:100%}
.tmore-link svg{width:22px;height:22px;flex:none}
.tmore-link.on,.tmore-link:hover{background:var(--accent-soft);color:var(--accent-t)}
.tm-head{display:flex;align-items:flex-end;justify-content:space-between;gap:12px;flex-wrap:wrap;margin:2px 0 16px}
.tm-hl{display:flex;flex-direction:column;gap:2px;min-width:0}
.tm-hl .gb-q{align-self:flex-start;margin-top:4px}
.tm-title{margin:0;font-size:22px;line-height:1.25;overflow-wrap:anywhere}
.tm-new{min-height:44px}
.tm-sub{margin:0 0 12px}
.tm-quick-h{display:flex;justify-content:space-between;align-items:center;gap:14px;flex-wrap:wrap}
.tm-quick-h .h2{margin:0}
.tm-empty-unit{margin-top:12px;opacity:.9}
.tm-classes{margin-bottom:16px}
.tm-class{display:flex;flex-direction:column;gap:6px;text-decoration:none;color:var(--text);padding:16px}
.tm-settings{display:flex;flex-direction:column;gap:14px}
.tm-set-row{align-items:center}
.tm-set-v{font-size:18px}
.gb-wlink{margin-inline-start:auto;text-decoration:none;gap:6px}
.nt-drawer .gb-sec h3{display:flex;align-items:center;gap:8px}
.nt-step{display:inline-grid;place-items:center;width:24px;height:24px;border-radius:50%;background:var(--card2);border:1px solid var(--line);font-size:13px;font-weight:700}
.nt-open{margin-bottom:8px}
@media (max-width:700px){
  .tm-new{width:100%}
  .tm-title{font-size:19px}
  body.teacher-mode .nav-i span{font-size:11px;line-height:1.15;text-align:center}
}
/* "מצב תלמיד": a teacher inside the student app; the way back stays in the top bar on every screen */
.tb-sv svg{transform:none}
.tb-sv-back{border-color:var(--good);background:var(--good-soft);color:var(--good-t,var(--text))}
.tb-sv-back:hover{background:var(--good);color:var(--on-accent)}
.sv-bar{margin:0 0 12px;padding:10px 14px;border-radius:8px;border:1px solid var(--line);background:var(--card2);font-size:14px;overflow-wrap:anywhere}
.sv-note .btn{min-height:44px}
.tb-sv-short{display:none}
@media (max-width:480px){ .tb-sv-full{display:none} .tb-sv-short{display:inline} .topbar:has(.tb-sv:not([hidden])) .tb-brand b{display:none} }
body.teacher-mode #screen-class>.scr-h{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ---------- welcome / landing screen (shown before any app option): glass card over a level-map backdrop ---------- */
body.landing-on .app{display:none!important}
.landing{position:relative;isolation:isolate;overflow:hidden;min-height:100vh;min-height:100dvh;display:grid;place-items:center;padding:40px 16px;
  background:radial-gradient(800px 420px at 50% 0%,rgba(255,176,32,.10),transparent 70%),var(--bg)}
.landing[hidden]{display:none}
.land-map{position:absolute;inset:0;width:100%;height:100%;z-index:-1;pointer-events:none;opacity:.9}
.lm-trail{fill:none;stroke:var(--line);stroke-width:6;stroke-linecap:round;stroke-dasharray:2 14}
.lm-done{fill:none;stroke:url(#landTr);stroke-width:5;stroke-linecap:round;filter:drop-shadow(0 0 8px rgba(255,176,32,.45))}
.lm-o{fill:var(--card);stroke:var(--line2);stroke-width:2}
.lm-n.done .lm-o{fill:var(--good-soft,#12302a);stroke:var(--good)}
.lm-n.cur .lm-o{fill:var(--accent-soft);stroke:var(--accent);stroke-width:3}
.lm-p{fill:none;stroke:var(--accent);opacity:.6;transform-box:fill-box;transform-origin:center;animation:lmPulse 2.4s ease-out infinite}
@keyframes lmPulse{0%{transform:scale(1);opacity:.6}100%{transform:scale(1.9);opacity:0}}
.lm-n text{fill:var(--muted);font:600 13px var(--mono,monospace);text-anchor:middle}
.lm-n.done text{fill:var(--good)}.lm-n.cur text{fill:var(--accent-t,var(--accent))}
.lm-lbl{fill:var(--dim);font-size:13px;text-anchor:middle}
.land-card{position:relative;width:100%;max-width:440px;display:flex;flex-direction:column;align-items:center;text-align:center;gap:12px;padding:38px 34px 28px;border-radius:28px;
  background:linear-gradient(180deg,color-mix(in srgb,var(--card) 92%,transparent),color-mix(in srgb,var(--bg2) 92%,transparent));
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border:1px solid var(--line);
  box-shadow:0 50px 100px -30px rgba(0,0,0,.85),inset 0 1px 0 rgba(255,255,255,.06)}
.land-logo{width:96px;height:96px;filter:drop-shadow(0 14px 28px rgba(255,176,32,.35))}
.land-shine{animation:landShine 5s 1s ease-in-out infinite;transform:translateX(0) skewX(-20deg)}
@keyframes landShine{0%{transform:translateX(0) skewX(-20deg)}30%,100%{transform:translateX(130px) skewX(-20deg)}}
.land-title{margin:4px 0 0;font-size:40px;font-weight:800;letter-spacing:.5px;outline:none;line-height:1.15}
.land-tag{margin:0;color:var(--muted);font-size:16.5px;line-height:1.6;max-width:34ch}
.land-feats{list-style:none;margin:10px 0 6px;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:10px;width:100%}
.land-feats li{display:flex;flex-direction:column;align-items:center;gap:2px;padding:12px 6px 10px;border-radius:14px;background:var(--card2);border:1px solid var(--line)}
.land-feats svg{width:26px;height:26px;margin-bottom:4px}
.land-feats b{font-size:14px}.land-feats span{font-size:12px;color:var(--muted)}
.land-acts{display:flex;flex-direction:column;align-items:stretch;gap:10px;width:100%;margin-top:8px}
/* the area around Google's own rendered button: a light pill plate so the white button sits in the glass card */
.land-gsi{min-height:52px;display:flex;align-items:center;justify-content:center;padding:4px;border-radius:999px;background:rgba(255,255,255,.04);border:1px solid var(--line);box-shadow:0 8px 24px -12px rgba(0,0,0,.6)}
.land-gsi .gsi-slot{display:flex;justify-content:center;width:100%;min-height:44px;align-items:center}
.land-gsi .gsi-slot iframe{border-radius:999px}
.land-or{display:flex;align-items:center;gap:10px;color:var(--muted-t);font-size:13px}
.land-or::before,.land-or::after{content:"";flex:1;height:1px;background:var(--line)}
html .landing .land-guest.btn{min-height:48px;width:100%;border-radius:999px;background:transparent;border:1px solid var(--line2);color:var(--text);font-size:15px}
html .landing .land-guest.btn:hover{border-color:var(--accent);color:var(--accent-t,var(--accent))}
.land-note{margin:8px 0 0;color:var(--muted-t);font-size:12.5px;line-height:1.55;max-width:38ch}
@media (max-width:600px){ .landing{padding:28px 14px} .land-card{padding:28px 18px 22px;border-radius:22px} .land-title{font-size:32px} .land-logo{width:76px;height:76px} .land-map{opacity:.5} .land-feats{gap:8px} }
@media (prefers-reduced-motion:reduce){ .lm-p,.land-shine{animation:none} .lm-p{opacity:0} }
.sync-status p{margin:0 0 6px}
.sync-status .sync-warn{color:var(--warn-t,var(--warn))}
/* touch-only devices: no keyboard, so no key hints (Esc, R, Space, Enter, 1–9) – less clutter above the answers */
@media (hover:none) and (pointer:coarse){ kbd,.wo-foot>.muted:has(kbd){display:none!important} }
/* exercise pickers (new topic, assignment editor) on phones: an even two-column grid instead of ragged pills */
@media (max-width:640px){ .cl-mods{display:grid;grid-template-columns:repeat(2,minmax(0,1fr))} .cl-mods .ws-mod{justify-content:center;text-align:center} }
/* ---------- teacher-paced content ("תכנים פתוחים"): locked stays visible, marked with the teacher's note ---------- */
.unlock-note{margin:0;padding:10px 14px;border-radius:12px;border:1px dashed var(--line2);color:var(--muted-t);font-size:14px;line-height:1.5}
#wsItems .unlock-note{flex-basis:100%;margin-top:4px}
.unlock-mod{margin:-2px 0 0;color:var(--muted-t)}
.lv.held{border-style:dashed}
.ws-it.held,.ws-mod.held{opacity:.55;border-style:dashed;cursor:not-allowed}
.ws-lk{position:absolute;top:3px;inset-inline-end:5px;line-height:0;color:var(--muted-t)} .ws-lk svg{width:13px;height:13px}
.ct-lead{margin:6px 0 0;max-width:72ch}
.ct-nm{display:flex;align-items:center;gap:8px;min-width:0} .ct-nm .mm-ic{width:34px;height:34px;border-radius:11px} .ct-nm .mm-ic svg{width:20px;height:20px}
.gb-hero b.ct-word{font-size:34px}
.ct-card.closed .gb-hero b{color:var(--muted)}
.ct-items{display:flex;flex-wrap:wrap;gap:8px}
.ct-items .ws-it{min-width:64px;min-height:56px;cursor:pointer}
.ct-items .ws-it[data-fixed]{cursor:default}
#ctItemsSec.off .ct-items,#ctItemsSec.off .row{opacity:.45}
.ct-seg>*{min-width:96px}
body.teacher-mode .nav .tnav{min-width:0}
@media (max-width:640px){ .gb-hero b.ct-word{font-size:28px} .ct-items .ws-it{flex:1 1 calc(33% - 8px)} }

/* תרגיל הגל: the scale degree sits above the note name. .on is the note sounding now. */
.answers.wave{display:flex;flex-direction:column;gap:12px;min-width:0}
.wave-ctl{display:flex;flex-wrap:wrap;gap:10px}
.wave-ctl .fld{flex:1 1 150px;min-width:0;display:flex;flex-direction:column;gap:4px}
.wave-ctl .fld>span{font-size:13px;color:var(--muted-t);font-weight:600}
.wave-ctl .tin{width:100%}
.wave-bpm{flex:1 1 180px}
.wave-toggles,.wave-acts{display:flex;flex-wrap:wrap;gap:8px}
.wave-toggles .btn,.wave-acts .btn{flex:1 1 140px;min-width:0;white-space:normal;text-align:center}
.wave-toggles .btn.on{border-color:var(--accent);color:var(--accent-t);background:var(--accent-soft)}
.wave-head{display:flex;align-items:baseline;justify-content:space-between;gap:10px;flex-wrap:wrap}
.wave-head b{font-size:20px}
.wave-line{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;min-width:0}
.wave-n{flex:1 1 76px;max-width:148px;min-width:0;min-height:72px;border-radius:16px;border:1px solid var(--line2);background:var(--card2);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;padding:8px 6px;text-align:center}
.wave-n b{font-size:17px;font-weight:700;line-height:1.25;overflow-wrap:anywhere}
.wave-n small{font-size:14px;font-weight:700;color:var(--muted-t);font-variant-numeric:tabular-nums}
.wave-n.on{border-color:var(--accent);background:var(--accent-soft);box-shadow:inset 0 0 0 1px var(--accent)}
.wave-n.on b,.wave-n.on small{color:var(--accent-t)}