:root{--bg:#fff;--surface:#fff;--surface-2:#f5f7f4;--border:#e3e8e1;--text:#2b3a2f;--muted:#6f7d72;--primary:#1f9d55;--primary-edge:#167a41;--primary-soft:#dcf5e6;--gold:#f2a900;--gold-soft:#fff4d4;--danger:#e5484d;--danger-edge:#b8343a;--danger-soft:#ffe5e5;--select:#1c8fe0;--select-soft:#ddf0fd;--light:#1c8fe0;--heavy:#d9534f;--mixed:#9a6bd6;--locked:#e5e8e4;--locked-text:#a7b0a9;--unit-0:#1f9d55;--unit-1:#1c8fe0;--unit-2:#d98a00;--unit-3:#9a6bd6;--radius:16px;--font:"Nunito",system-ui,-apple-system,"Segoe UI",sans-serif;--font-arabic:"Amiri Quran","Amiri","Scheherazade New","Noto Naskh Arabic",serif;--buncss-light:initial;--buncss-dark: ;color-scheme:light}:root[data-theme=dark]{--bg:#131f18;--surface:#1a2a20;--surface-2:#213328;--border:#2f4436;--text:#e8f0ea;--muted:#9bb0a2;--primary:#34c16f;--primary-edge:#23904f;--primary-soft:#1f3f2c;--gold:#ffc83d;--gold-soft:#3a3320;--danger:#ff6369;--danger-edge:#c9454b;--danger-soft:#402325;--select:#4fb3f6;--select-soft:#1d3444;--light:#4fb3f6;--heavy:#ff7b77;--mixed:#b995ee;--locked:#26362c;--locked-text:#5d7064;--buncss-light: ;--buncss-dark:initial;color-scheme:dark}*{box-sizing:border-box}html,body{background:var(--bg);color:var(--text);font-family:var(--font);-webkit-tap-highlight-color:transparent;margin:0;font-size:17px;line-height:1.5}button{font:inherit;color:inherit;cursor:pointer}button:disabled{cursor:default}:focus-visible{outline:3px solid var(--select);outline-offset:2px}h1,h2,h3{margin:0 0 .5em;line-height:1.25}.visually-hidden{position:absolute;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;width:1px;height:1px}.muted{color:var(--muted)}.arabic{font-family:var(--font-arabic);unicode-bidi:isolate;font-weight:400;line-height:2}.arabic-s{font-size:1.35rem}.arabic-m{font-size:1.6rem}.arabic-l{font-size:2.2rem;line-height:1.9}.arabic-xl{font-size:clamp(4rem,18vw,6.5rem);line-height:1.7}.latin{letter-spacing:.02em;font-weight:800}.app{display:flex;flex-direction:column;min-height:100dvh}.content{flex:1;width:100%;max-width:640px;margin:0 auto;padding:16px}.site-footer{text-align:center;color:var(--muted);padding:24px 16px 32px;font-size:.85rem}.topbar{position:sticky;z-index:10;background:var(--bg);border-bottom:2px solid var(--border);top:0}.topbar-row{display:flex;justify-content:space-between;align-items: center;gap:8px;max-width:640px;margin:0 auto;padding:8px 16px 0}.logo{display:flex;background:0 0;border:0;align-items: center;gap:8px;padding:0}.logo-mark{font-family:var(--font-arabic);background:var(--primary);color:#fff;border-radius:12px;padding:0 10px;font-size:1.3rem;line-height:2}.logo-text{color:var(--primary);letter-spacing:-.01em;font-size:1.35rem;font-weight:800}.stats{display:flex;align-items: center;gap:12px}.stat{white-space:nowrap;font-weight:800}.stat-streak{color:#f07a00}.stat-xp{color:var(--gold)}.lang-switch select{font:inherit;color:var(--text);background:var(--surface-2);border:2px solid var(--border);border-radius:12px;padding:4px 8px;font-size:.9rem;font-weight:700}.tabs{display:flex;gap:4px;max-width:640px;margin:0 auto;padding:6px 16px 0}.tab{color:var(--muted);text-transform:uppercase;letter-spacing:.06em;background:0 0;border:0;border-bottom:3px solid #0000;flex:1;padding:8px 4px 10px;font-size:.85rem;font-weight:800}.tab-active{color:var(--primary);border-bottom-color:var(--primary)}.btn{border-radius:var(--radius);text-transform:uppercase;letter-spacing:.06em;border:0;padding:13px 28px;transition:transform 50ms,filter .15s;font-size:.95rem;font-weight:800}.btn:active:not(:disabled){box-shadow:none;transform:translateY(3px)}.btn-primary{background:var(--primary);color:#fff;box-shadow:0 4px 0 var(--primary-edge)}.btn-danger{background:var(--danger);color:#fff;box-shadow:0 4px 0 var(--danger-edge)}.btn:disabled{background:var(--locked);color:var(--locked-text);box-shadow:0 4px 0 var(--border)}.btn-secondary{background:var(--surface);color:var(--select);border:2px solid var(--border);box-shadow:0 4px 0 var(--border)}.btn-wide{width:100%;max-width:420px}.gear{display:grid;border:2px solid var(--border);background:var(--surface-2);color:var(--muted);border-radius:12px;place-items: center;width:38px;height:38px}.gear-active{color:var(--primary);border-color:var(--primary)}.settings .card h2{margin-bottom:10px}.settings-message{background:var(--primary-soft);color:var(--primary);border-radius:12px;margin:18px 0 0;padding:10px 14px;font-weight:700}.segmented{display:flex;background:var(--locked);border-radius:14px;gap:4px;padding:4px}.segment{color:var(--muted);background:0 0;border:0;border-radius:10px;flex:1;padding:9px 6px;font-weight:700}.segment-active{background:var(--surface);color:var(--text);box-shadow:0 2px 0 var(--border)}.toggle{display:flex;cursor:pointer;align-items: center;gap:12px;font-weight:700}.toggle input{accent-color:var(--primary);width:22px;height:22px}.settings-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:12px}.settings-actions .btn{flex:1;padding:11px 14px;font-size:.85rem}.settings-actions-stacked{flex-direction:column}.card-danger{border-color:color-mix(in srgb,var(--danger)35%,var(--border))}.link-button{display:block;color:var(--muted);text-decoration:underline;background:0 0;border:0;margin:32px auto 0;font-size:.9rem}.path{padding-bottom:24px}.unit{--unit:var(--unit-0);margin-bottom:28px}.unit-1{--unit:var(--unit-1)}.unit-2{--unit:var(--unit-2)}.unit-3{--unit:var(--unit-3)}.unit-banner{background:var(--unit);color:#fff;border-radius:var(--radius);padding:14px 18px;box-shadow:0 4px #0000002e}.unit-banner h2{margin:0;font-size:1.25rem}.unit-banner p{opacity:.92;margin:2px 0 0;font-size:.95rem}.unit-number{text-transform:uppercase;letter-spacing:.08em;opacity:.85;font-size:.8rem;font-weight:800}.nodes{list-style:none;display:flex;flex-direction:column;align-items: center;gap:18px;margin:0;padding:22px 0 4px}.node-row{position:relative;display:flex;flex-direction:column;align-items: center}.node{position:relative;background:var(--unit);color:#fff;display:flex;overflow:hidden;border:0;border-radius:36px;justify-content:center;align-items: center;min-width:84px;max-width:190px;height:72px;padding:0 18px;transition:transform 50ms;box-shadow:0 6px #00000038}.node .arabic{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.node:active:not(:disabled){transform:translateY(5px);box-shadow:0 1px #00000038}.node-done{background:var(--gold);box-shadow:0 6px #c68a00}.node-current{outline:6px solid color-mix(in srgb,var(--unit)30%,transparent);animation:1.8s ease-in-out infinite pulse}.node-locked{background:var(--locked);color:var(--locked-text);box-shadow:0 6px 0 var(--border)}.node-check{position:absolute;font-size:.9rem;font-weight:800;top:4px;right:12px}.node-start{text-transform:uppercase;letter-spacing:.08em;color:var(--unit);background:var(--surface);border:2px solid var(--border);animation:1.8s ease-in-out infinite bob;border-radius:10px;margin-bottom:8px;padding:2px 10px;font-size:.8rem;font-weight:800}@keyframes pulse{50%{outline-width:10px}}@keyframes bob{50%{transform:translateY(-4px)}}.lesson{display:flex;flex-direction:column;min-height:100dvh}.lesson-top{display:flex;align-items: center;gap:14px;width:100%;max-width:720px;margin:0 auto;padding:18px 16px 8px}.close{color:var(--muted);background:0 0;border:0;padding:4px 8px;font-size:1.4rem}.progress{background:var(--locked);overflow:hidden;border-radius:8px;flex:1;height:16px}.progress-fill{background:var(--primary);border-radius:8px;height:100%;transition:width .35s;box-shadow:inset 0 -4px #00000014}.lesson-body{flex:1;width:100%;max-width:640px;margin:0 auto;padding:12px 16px 24px}.exercise{animation:.25s enter}@keyframes enter{0%{opacity:0;transform:translateY(8px)}}.prompt{margin-bottom:16px;font-size:1.45rem;font-weight:800}.prompt-card{position:relative;display:flex;background:var(--surface-2);border:2px solid var(--border);border-radius:24px;flex-direction:column;justify-content:center;align-items: center;margin-bottom:20px;padding:8px 16px}.prompt-sub{color:var(--muted);margin-top:-12px}.source{color:var(--muted);margin:12px 0 4px;font-size:.8rem}.options{display:grid;gap:12px}.options-latin,.options-arabic{grid-template-columns:1fr 1fr}.option{position:relative;border-radius:var(--radius);border:2px solid var(--border);background:var(--surface);display:flex;border-bottom-width:5px;justify-content:center;align-items: center;gap:6px;min-height:72px;padding:10px 14px;transition:background .12s,border-color .12s;font-size:1.2rem}.option-stacked{flex-direction:column;gap:0;font-size:1rem;font-weight:700}.option-note{color:var(--muted);font-size:.95rem}.option-index{position:absolute;color:var(--muted);border:2px solid var(--border);text-align:center;border-radius:6px;min-width:20px;font-size:.72rem;font-weight:800;line-height:16px;top:6px;left:10px}.option-selected{border-color:var(--select);background:var(--select-soft);color:var(--select)}.option-right{border-color:var(--primary);background:var(--primary-soft);color:var(--primary)}.option-wrong{border-color:var(--danger);background:var(--danger-soft);color:var(--danger);animation:.3s shake}@keyframes shake{25%{transform:translate(-5px)}75%{transform:translate(5px)}}.match-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.match-column{display:flex;flex-direction:column;gap:10px}.match-card{border-radius:var(--radius);border:2px solid var(--border);background:var(--surface);display:flex;border-bottom-width:5px;justify-content:center;align-items: center;min-height:64px;font-size:1.15rem}.match-picked{border-color:var(--select);background:var(--select-soft);color:var(--select)}.match-wrong{border-color:var(--danger);background:var(--danger-soft);color:var(--danger);animation:.3s shake}.match-done{opacity:.35;border-color:var(--primary);color:var(--primary)}.answer-line{border-bottom:2px solid var(--border);display:flex;flex-wrap:wrap;gap:8px;min-height:64px;margin-bottom:20px;padding:8px 0}.tile-bank{display:flex;flex-wrap:wrap;justify-content:center;gap:10px}.tile{border:2px solid var(--border);background:var(--surface);border-bottom-width:4px;border-radius:12px;padding:8px 16px;font-size:1.15rem;font-weight:800}.tile:disabled:not(.tile-chosen){color:#0000;background:var(--locked);border-color:var(--locked)}.intro-card{background:var(--surface-2);border:2px solid var(--border);border-radius:24px;padding:16px 20px}.intro-glyph{position:relative;display:flex;justify-content:center}.facts{display:grid;grid-template-columns:auto 1fr;gap:6px 16px;margin:0 0 12px}.facts dt,.facts-label{color:var(--muted);font-size:.9rem;font-weight:700}.facts dd{margin:0}.fact-name{color:var(--primary);font-size:1.25rem;font-weight:800}.forms{display:flex;flex-wrap:wrap;justify-content:space-around;gap:8px}.form{display:flex;flex-direction:column;align-items: center;min-width:60px}.form-label{color:var(--muted);margin-top:-6px;font-size:.78rem;font-weight:700}.concept p{margin:0 0 10px}.examples{display:flex;flex-wrap:wrap;justify-content:center;gap:10px 22px;margin-top:10px}.example{display:flex;background:var(--surface);border:2px solid var(--border);border-radius:14px;flex-direction:column;align-items: center;padding:0 14px 8px}.example .latin{color:var(--primary)}.example .arabic{line-height:2.4}.feedback{position:sticky;border-top:2px solid var(--border);background:var(--bg);padding:16px;bottom:0}.feedback-inner{display:flex;justify-content:space-between;align-items: center;gap:16px;max-width:640px;margin:0 auto}.feedback-text{display:flex;flex-direction:column;min-height:1.5em}.feedback-text strong{font-size:1.25rem}.feedback-right{background:var(--primary-soft);color:var(--primary);border-top-color:#0000}.feedback-wrong{background:var(--danger-soft);color:var(--danger);border-top-color:#0000}.feedback .btn{min-width:150px}.trace-target{text-align:center;color:var(--primary);margin:-6px 0 10px;font-size:1.3rem}.trace-board{--guide:color-mix(in srgb,var(--text)16%,transparent);--ink:var(--select);position:relative;aspect-ratio:1;border:2px dashed var(--border);background:var(--surface-2);border-radius:24px;width:min(100%,340px);margin:0 auto}.trace-board canvas{position:absolute;width:100%;height:100%;inset:0}.trace-ink{touch-action:none;cursor:crosshair}.trace-clear{margin-top:12px}.complete{display:flex;text-align:center;flex-direction:column;justify-content:center;align-items: center;gap:18px;min-height:100dvh;padding:24px 16px}.complete h1{color:var(--gold);font-size:2rem}.complete-burst{display:flex;font-family:var(--font-arabic);direction:rtl;gap:10px;font-size:3rem;line-height:1.6}.complete-burst span{display:inline-grid;background:var(--primary);color:#fff;box-shadow:0 5px 0 var(--primary-edge);animation:.5s cubic-bezier(.3,1.6,.6,1) backwards pop;border-radius:18px;place-items: center;width:70px;height:80px}.complete-burst span:nth-child(2){animation-delay:80ms;background:var(--gold);box-shadow:0 5px #c68a00}.complete-burst span:nth-child(3){animation-delay:.16s;background:var(--select);box-shadow:0 5px #1470b0}.complete-burst span:nth-child(4){animation-delay:.24s;background:var(--mixed);box-shadow:0 5px #7550a8}@keyframes pop{0%{transform:scale(.2)rotate(-12deg);opacity:0}}.complete-perfect{color:var(--primary);margin:0;font-weight:800}.complete-stats{display:flex;gap:14px}.complete-stat{border-radius:var(--radius);overflow:hidden;display:flex;border:2px solid;flex-direction:column;min-width:140px}.complete-label{color:#fff;text-transform:uppercase;letter-spacing:.06em;padding:4px 8px;font-size:.78rem;font-weight:800}.complete-value{background:var(--surface);padding:8px;font-size:1.6rem;font-weight:800}.stat-gold{border-color:var(--gold);color:var(--gold)}.stat-gold .complete-label{background:var(--gold)}.stat-green{border-color:var(--primary);color:var(--primary)}.stat-green .complete-label{background:var(--primary)}.page h1{margin-top:8px;font-size:1.7rem}.letter-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(84px,1fr));gap:10px;margin-top:16px}.letter-tile{display:flex;border:2px solid var(--border);border-radius:var(--radius);background:var(--surface);border-bottom-width:5px;flex-direction:column;align-items: center;padding:0 4px 8px}.letter-tile .arabic{line-height:2.3}.letter-name{font-size:.9rem;font-weight:800}.letter-tile.weight-heavy{border-color:color-mix(in srgb,var(--heavy)45%,var(--border))}.letter-tile.weight-heavy .letter-name{color:var(--heavy)}.letter-tile.weight-mixed{border-color:color-mix(in srgb,var(--mixed)45%,var(--border))}.letter-tile.weight-mixed .letter-name{color:var(--mixed)}.practice-header{display:flex;flex-direction:column;gap:12px;margin-bottom:14px}.practice-modes{display:flex;flex-wrap:wrap;gap:10px}.practice-modes .btn{flex:1;padding:11px 12px}.practice-header h2,.practice-header p{margin:0}.practice-count{color:var(--gold);font-size:.9rem;font-weight:800}.mastery{direction:ltr;display:block;background:var(--locked);overflow:hidden;border-radius:3px;width:100%;height:6px;margin-top:4px}.mastery-fill{display:block;background:var(--primary);border-radius:3px;height:100%;transition:width .3s}.mastery-full .mastery-fill{background:var(--gold)}.letter-tile .mastery{width:70%}.harakat-table{border-collapse:separate;border-spacing:8px;table-layout:fixed;width:calc(100% + 16px);margin:0 -8px}.harakat-table th{color:var(--muted);font-size:.85rem;font-weight:700}.harakat-table th .arabic{display:block;line-height:1.8}.harakat-name{display:block}.harakat-cell{display:flex;background:var(--surface);border:2px solid var(--border);border-radius:14px;flex-direction:column;align-items: center;padding:0 10px 8px}.harakat-cell .arabic{line-height:2.2}.harakat-cell.weight-heavy .latin{color:var(--heavy)}.harakat-cell.weight-mixed .latin{color:var(--mixed)}.weight-badge{display:inline-block;border-radius:10px;padding:2px 10px;font-weight:800}.weight-badge.weight-light{background:var(--select-soft);color:var(--light)}.weight-badge.weight-heavy{background:var(--danger-soft);color:var(--heavy)}.weight-badge.weight-mixed{background:color-mix(in srgb,var(--mixed)18%,var(--bg));color:var(--mixed)}.letter-dialog{background:var(--bg);color:var(--text);border:0;border-radius:24px;width:min(520px,100vw - 32px);max-height:calc(100dvh - 32px);padding:0}.letter-dialog::backdrop{background:#00000073}.dialog-body{display:flex;flex-direction:column;padding:16px 20px 20px}.dialog-body h3{color:var(--muted);margin:16px 0 0;font-size:1rem}.dialog-body .btn{margin:20px auto 0}.dialog-close{color:var(--muted);background:0 0;border:0;align-self: flex-end;padding:2px 6px;font-size:1.3rem}.dialog-title{text-align:center;margin:0;font-size:1.5rem}.dialog-body>p{text-align:center;margin:6px 0}.dialog-body .weight-badge{align-self: center}.card{background:var(--surface-2);border:2px solid var(--border);border-radius:20px;margin:16px 0;padding:16px 20px}.card h2{font-size:1.2rem}.card p{margin:0 0 8px}.mark-list{list-style:none;display:grid;gap:6px;margin:0;padding:0}.mark-list li{display:flex;align-items: center;gap:16px}.mark-sample{white-space:nowrap;text-align:center;background:var(--surface);border-radius:12px;min-width:84px;padding:0 8px}.weight-table{display:grid;gap:8px}.weight-row{display:flex;background:var(--surface);border-left:6px solid;border-radius:12px;justify-content:space-between;align-items: center;gap:12px;padding:2px 14px}.weight-row.weight-light{border-color:var(--light)}.weight-row.weight-heavy{border-color:var(--heavy)}.weight-row.weight-mixed{border-color:var(--mixed)}.weight-head{display:flex;flex-direction:column}.latin-key{display:grid;gap:6px;margin:0}.latin-key div{display:grid;grid-template-columns:110px 1fr;gap:12px}.latin-key dt{color:var(--primary)}.latin-key dd{margin:0}@media (max-width:420px){.stat-xp{display:none}.options-latin .option{font-size:1.05rem}.feedback .btn{min-width:120px;padding:13px 18px}.latin-key div{grid-template-columns:80px 1fr}}@media (prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important}}