/* Layout: phone-first single column, one focused card per step, bottom tab bar */
:root{
  --bg:#EEF2EF; --surface:#FFFFFF; --ink:#1C2826; --muted:#5B6B67; --line:#D3DCD8;
  --accent:#1F6F66; --accent-ink:#FFFFFF; --soft:#DCEBE7; --gold:#9A7414; --good:#2E7D4F; --bad:#B3412F;
  --f-display:"Literata", Georgia, serif; --f-body:"Karla", system-ui, sans-serif; --f-heb:"Noto Serif Hebrew","Times New Roman",serif;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#111816; --surface:#1A2421; --ink:#E4ECE9; --muted:#9AAEA8; --line:#2C3A36;
  --accent:#4FB3A6; --accent-ink:#0D1513; --soft:#203631; --gold:#D4AE4E; --good:#5CC48A; --bad:#E57A66; color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#111816; --surface:#1A2421; --ink:#E4ECE9; --muted:#9AAEA8; --line:#2C3A36;
  --accent:#4FB3A6; --accent-ink:#0D1513; --soft:#203631; --gold:#D4AE4E; --good:#5CC48A; --bad:#E57A66; color-scheme:dark}
*{box-sizing:border-box}
html,body{height:100%}
body{background:var(--bg);color:var(--ink);font-family:var(--f-body);font-size:16px;line-height:1.5;margin:0}
.app{max-width:520px;margin:0 auto;min-height:100%;display:flex;flex-direction:column;
  padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px));padding-block:16px 104px}
header{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:16px}
h1{font-family:var(--f-display);font-size:1.6rem;margin:0}
h1 a{color:inherit;text-decoration:none}
h1 .heb{font-family:var(--f-heb);color:var(--accent);margin-left:6px;font-weight:600}
.stat{font-size:.85rem;color:var(--muted);font-variant-numeric:tabular-nums}
.stat b{color:var(--gold)}
h2{font-family:var(--f-display);font-size:1.15rem;margin:0 0 4px;text-wrap:balance}
.sub{color:var(--muted);margin:0 0 16px;font-size:.95rem}
.heb-inline{font-family:var(--f-heb);font-size:1.1em;unicode-bidi:isolate}
.card{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:20px;display:flex;flex-direction:column;align-items:center;gap:12px}
.pic{font-size:5.5rem;line-height:1.1;min-height:6rem;display:flex;align-items:center;justify-content:center}
.pic.big{font-size:7rem}.pic.small{font-size:2.6rem}.pic.multi{font-size:3.8rem}
.word{font-family:var(--f-heb);font-size:2.6rem;direction:rtl;line-height:1.3;text-align:center}
.translit{color:var(--muted);font-style:italic}
.tip{background:var(--soft);border-radius:12px;padding:10px 14px;font-size:.92rem;width:100%}
.row{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;width:100%}
button{font:inherit;cursor:pointer;border-radius:12px;border:1px solid var(--line);background:var(--surface);color:var(--ink);padding:10px 16px;min-height:44px}
button:disabled{opacity:.45;cursor:default}
button:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.primary{background:var(--accent);color:var(--accent-ink);border-color:var(--accent);font-weight:700}
.ghost{background:transparent}
.dots{display:flex;gap:6px;flex-wrap:wrap;justify-content:center}
.dots i{width:8px;height:8px;border-radius:50%;background:var(--line)}
.dots i.on{background:var(--accent)}
.grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;width:100%}
.opt{padding:12px;min-height:96px;display:flex;align-items:center;justify-content:center;text-align:center}
.opt .pic{font-size:3rem;min-height:3.4rem}
.opt .pic.big{font-size:3.8rem}.opt .pic.small{font-size:1.6rem}.opt .pic.multi{font-size:1.9rem}
.opt.heb{font-family:var(--f-heb);font-size:1.7rem;direction:rtl}
.opt.text{font-size:1.05rem;flex-direction:column}
.opt.right{border-color:var(--good);box-shadow:inset 0 0 0 2px var(--good)}
.opt.wrong{border-color:var(--bad);box-shadow:inset 0 0 0 2px var(--bad)}
.feedback{min-height:1.5em;font-weight:600;text-align:center}
.feedback.good{color:var(--good)} .feedback.bad{color:var(--bad)}
.progress{width:100%;height:6px;background:var(--line);border-radius:3px;overflow:hidden}
.progress b{display:block;height:100%;background:var(--accent);transition:width .2s}
/* Home */
.home{display:flex;flex-direction:column;gap:16px}
.review-banner{display:flex;align-items:center;justify-content:space-between;gap:12px;background:var(--soft);border-radius:14px;padding:14px 16px}
.review-banner p{margin:0}
.lessons{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.lesson{display:flex;align-items:center;gap:14px;width:100%;text-align:left;padding:12px 14px;border-radius:14px}
.lesson .num{font-variant-numeric:tabular-nums;width:2rem;height:2rem;border-radius:50%;display:flex;align-items:center;justify-content:center;background:var(--soft);color:var(--accent);font-weight:700;flex:none}
.lesson.done .num{background:var(--accent);color:var(--accent-ink)}
.lesson .meta{flex:1;min-width:0}
.lesson .meta b{display:block}
.lesson .meta span{font-family:var(--f-heb);color:var(--muted)}
.lesson .state{font-size:.8rem;color:var(--muted)}
.section-label{font-size:.75rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin:8px 0 0}
/* Reader */
.ref{font-size:.8rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.verse{font-family:var(--f-heb);font-size:1.9rem;direction:rtl;line-height:2.1;text-align:center}
.verse span{cursor:pointer;border-radius:6px;padding:0 3px}
.verse span:hover,.verse span.sel{background:var(--soft)}
.gloss{width:100%;background:var(--soft);border-radius:12px;padding:12px 14px;min-height:72px}
.gloss .g-heb{font-family:var(--f-heb);font-size:1.4rem;direction:rtl}
.gloss .g-en{font-weight:600}
.gloss .g-note{color:var(--muted);font-size:.9rem}
.prompt{font-family:var(--f-heb);font-size:4rem;line-height:1.2}
.big-num{font-family:var(--f-display);font-size:3rem;color:var(--accent);margin:0;font-variant-numeric:tabular-nums}
.note{font-size:.82rem;color:var(--muted);text-align:center;margin-top:20px}
/* Letters: segmented switch and drawing pad */
.seg{display:flex;gap:4px;background:var(--soft);border-radius:12px;padding:4px;margin:4px 0 12px}
.seg a{flex:1;text-align:center;padding:8px 6px;border-radius:9px;color:var(--ink);text-decoration:none;font-weight:600;font-size:.92rem}
.seg a[aria-current="page"]{background:var(--surface);color:var(--accent)}
.seg a:focus-visible{outline:3px solid var(--accent)}
.letter-head{display:flex;align-items:center;gap:12px;width:100%;flex-wrap:wrap}
.letter-head .ltr{font-family:var(--f-heb);font-size:2.2rem;line-height:1}
.letter-head .count{margin-left:auto;color:var(--muted);font-size:.85rem;font-variant-numeric:tabular-nums}
.pad{position:relative;width:100%;max-width:300px;aspect-ratio:1;border:1.5px dashed var(--line);border-radius:14px;background:var(--surface)}
.pad canvas{position:absolute;inset:0;width:100%;height:100%;touch-action:none;border-radius:14px}
.pad .guide{pointer-events:none}
/* Alphabet guide */
.agrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(64px,1fr));gap:8px;margin-bottom:12px}
.atile{display:flex;flex-direction:column;align-items:center;gap:2px;padding:8px 4px;min-height:74px}
.atile .ach{font-family:var(--f-heb);font-size:1.9rem;line-height:1.15}
.atile .aname{font-size:.72rem;color:var(--muted)}
.atile.sel{border-color:var(--accent);box-shadow:inset 0 0 0 2px var(--accent)}
#adetail{margin-bottom:12px}
.linfo{width:100%;display:flex;flex-direction:column;gap:10px;text-align:left}
.linfo p{margin:0;line-height:1.55}
.linfo-head{display:flex;align-items:center;gap:14px}
.linfo-head>div{flex:1;min-width:0}
.ltr-big{font-family:var(--f-heb);font-size:3.2rem;line-height:1;color:var(--accent);min-width:3rem;text-align:center}
.muted{color:var(--muted);font-size:.9rem}
.say-name{min-width:44px}
.ex{display:flex;align-items:center;gap:12px;width:100%;text-align:left;flex-wrap:wrap}
.ex-word{font-family:var(--f-heb);font-size:1.7rem}
.ex-word mark{background:var(--soft);color:var(--accent);border-radius:4px;padding:0 1px}
.pic.sm{font-size:2.2rem;min-height:0}
.vlist{list-style:none;margin:0 0 8px;padding:0;display:flex;flex-direction:column;gap:8px}
.vrow{display:flex;align-items:center;gap:14px;width:100%;text-align:left}
.vmark{font-family:var(--f-heb);font-size:2.4rem;width:3rem;text-align:center;line-height:1.3;flex:none}
.vmeta{flex:1;min-width:0;display:flex;flex-direction:column;gap:2px}
.vmeta span{font-size:.92rem}.vmeta small{color:var(--muted);font-size:.82rem;line-height:1.45}
.vex{font-family:var(--f-heb);font-size:1.4rem;color:var(--accent);flex:none}
/* Illustrations */
.pic.img{font-size:0}
.pic.img img{width:220px;height:220px;max-width:100%;object-fit:cover;border-radius:18px;display:block}
.opt .pic.img img{width:100%;height:auto;aspect-ratio:1;border-radius:12px}
.opt:has(.pic.img){padding:6px}
.pic.sm.img img{width:64px;height:64px;border-radius:10px}
/* Speaking coach */
.say{display:flex;flex-direction:column;align-items:center;gap:8px;width:100%}
.mic{min-width:180px;font-weight:700}
.mic.on{background:var(--bad);border-color:var(--bad);color:var(--surface)}
.heard{min-height:1.5em;text-align:center;font-weight:600}
.heard.good{color:var(--good)}.heard.bad{color:var(--bad)}
.heb-line{font-family:var(--f-heb);font-size:1.5rem;font-weight:400;margin-bottom:4px}
.w-ok{color:var(--good)}.w-miss{color:var(--bad);text-decoration:underline}
/* Tutor */
.chat{display:flex;flex-direction:column;gap:10px;margin-bottom:12px}
.msg{max-width:88%;padding:10px 14px;border-radius:16px;line-height:1.5;overflow-wrap:anywhere}
.msg p{margin:0 0 8px}.msg p:last-of-type{margin-bottom:0}
.msg ul{margin:4px 0 8px;padding-left:20px}.msg li{margin:2px 0}
.msg.me{align-self:flex-end;background:var(--accent);color:var(--accent-ink);border-bottom-right-radius:4px}
.msg.bot{align-self:flex-start;background:var(--surface);border:1px solid var(--line);border-bottom-left-radius:4px}
.msg .heb-inline{font-size:1.15em}
.msg-say{margin-top:8px;min-height:36px;padding:4px 12px;font-size:.85rem}
.typing{display:flex;gap:5px;padding:14px 16px}
.typing span{width:8px;height:8px;border-radius:50%;background:var(--muted);opacity:.4}
@media (prefers-reduced-motion:no-preference){.typing span{animation:blink 1.2s infinite}.typing span:nth-child(2){animation-delay:.2s}.typing span:nth-child(3){animation-delay:.4s}@keyframes blink{50%{opacity:1}}}
.starters{display:flex;flex-wrap:wrap;gap:8px}
.starter{font-size:.92rem;text-align:left}
.composer{position:sticky;bottom:calc(76px + env(safe-area-inset-bottom,0px));display:flex;gap:8px;align-items:flex-end;background:var(--bg);padding-block:8px}
.composer textarea{flex:1;min-width:0;font:inherit;font-size:16px;line-height:1.4;padding:10px 12px;border:1px solid var(--line);border-radius:12px;background:var(--surface);color:var(--ink);resize:none;max-height:160px}
.composer textarea:focus-visible{outline:3px solid var(--accent);outline-offset:1px}
.tmic{min-width:48px;font-size:1.1rem}
.tmic.on{background:var(--bad);border-color:var(--bad);color:var(--surface)}
.chat-tools{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;font-size:.92rem}
.toggle{display:flex;align-items:center;gap:8px;min-height:44px}
.toggle input{width:20px;height:20px;accent-color:var(--accent)}
.ask-link{background:transparent;border:none;color:var(--accent);font-weight:600;font-size:.92rem;min-height:40px;padding:6px 8px}
.ask-link:hover{text-decoration:underline}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
/* Nav */
nav{position:fixed;left:0;right:0;bottom:0;background:var(--surface);border-top:1px solid var(--line);
  padding:8px max(16px,env(safe-area-inset-right,0px)) calc(8px + env(safe-area-inset-bottom,0px)) max(16px,env(safe-area-inset-left,0px))}
nav .tabs{max-width:520px;margin:0 auto;display:grid;grid-template-columns:repeat(6,1fr);gap:6px}
nav a{font-size:.8rem;color:var(--muted);display:flex;flex-direction:column;align-items:center;gap:2px;padding:6px;text-decoration:none;border-radius:10px}
nav a .ic{font-family:var(--f-heb);font-size:1.3rem;line-height:1}
nav a[aria-current="page"]{color:var(--accent);font-weight:700}
nav a:focus-visible{outline:3px solid var(--accent)}
@media (prefers-reduced-motion:no-preference){.card{animation:in .22s ease}@keyframes in{from{transform:translateY(6px);opacity:.6}to{transform:none;opacity:1}}}