:root{--bg: #0b100d;--bg-deep: #080c09;--surface: #121a15;--surface-2: #16211b;--surface-3: #1b2820;--ink: #edf3ec;--ink-soft: #a3b3a6;--ink-faint: #6d7f71;--line: #22312a;--line-soft: #1b2721;--brand: #c8f04f;--brand-deep: #a8d42e;--brand-dim: rgba(200, 240, 79, .14);--brand-line: rgba(200, 240, 79, .32);--on-brand: #10150a;--danger: #ff6b5e;--danger-dim: rgba(255, 107, 94, .14);--warn: #ffc861;--warn-dim: rgba(255, 200, 97, .12);--shadow-sm: 0 1px 2px rgba(0, 0, 0, .4);--shadow-md: 0 12px 32px rgba(0, 0, 0, .45);--glow-brand: 0 8px 28px rgba(200, 240, 79, .22);--radius: 18px;--radius-sm: 12px;--font-body: "IBM Plex Sans Thai", "Noto Sans Thai", "Thonburi", -apple-system, "Segoe UI", sans-serif;--font-mono: "JetBrains Mono", "SFMono-Regular", ui-monospace, monospace;color-scheme:dark}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;color:var(--ink);background:radial-gradient(120% 90% at 50% -20%,#14201800 0%,transparent 60%),radial-gradient(90% 60% at 85% 110%,rgba(200,240,79,.05) 0%,transparent 55%),var(--bg);background-attachment:fixed;font-family:var(--font-body);line-height:1.55;min-height:100dvh}body:after{content:"";position:fixed;top:0;right:0;bottom:0;left:0;z-index:60;pointer-events:none;opacity:.5;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0.06 0 0 0 0 0.09 0 0 0 0 0.07 0 0 0 0.05 0'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)'/%3E%3C/svg%3E")}button,input,textarea,select{font:inherit}h1,h2,h3,p{margin:0}button{cursor:pointer}svg{flex-shrink:0}.muted{color:var(--ink-soft);font-size:.92rem}.muted.small{font-size:.82rem}.brand-mark{width:44px;height:44px;border-radius:14px;display:grid;place-items:center;background:var(--brand);color:var(--on-brand);font-family:var(--font-mono);font-weight:700;font-size:1.3rem;box-shadow:var(--glow-brand);flex-shrink:0}.brand-mark.boot{margin:0 auto 18px;animation:breathe 2.2s ease-in-out infinite}@keyframes breathe{0%,to{transform:scale(1);opacity:1}50%{transform:scale(.92);opacity:.8}}input,textarea,select{width:100%;background:var(--bg-deep);border:1px solid var(--line);border-radius:var(--radius-sm);padding:12px 14px;color:var(--ink);transition:border-color .15s,box-shadow .15s}textarea{min-height:96px;resize:vertical}input::placeholder,textarea::placeholder{color:var(--ink-faint)}input:focus,textarea:focus,select:focus{outline:none;border-color:var(--brand-line);box-shadow:0 0 0 3px var(--brand-dim)}label{display:grid;gap:8px;font-size:.86rem;font-weight:600;color:var(--ink-soft);margin:14px 0;min-width:0}button{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:var(--radius-sm);background:var(--surface-3);color:var(--ink);padding:12px 16px;font-weight:600;font-size:.95rem;transition:transform .08s,background .15s,border-color .15s,opacity .15s}button:active{transform:scale(.97)}button:focus-visible{outline:2px solid var(--brand);outline-offset:2px}button:disabled{opacity:.45;cursor:not-allowed;transform:none}button.primary{background:var(--brand);color:var(--on-brand);font-weight:700;box-shadow:var(--glow-brand)}button.primary:active{box-shadow:0 4px 16px #c8f04f29}button.quiet{background:transparent;border-color:var(--line);color:var(--ink-soft)}button.quiet:hover{color:var(--ink);border-color:var(--ink-faint)}button.danger{background:var(--danger-dim);color:var(--danger);border-color:#ff6b5e4d}button.wide{width:100%}button.icon-btn{padding:10px}.btn-ghost{background:transparent;border-color:var(--line)}.btn-ghost.recording{background:var(--danger-dim);border-color:#ff6b5e66;color:var(--danger)}.actions{display:flex;gap:10px;align-items:stretch}.actions>button{flex:1}.spinner{width:16px;height:16px;border-radius:50%;border:2px solid currentColor;border-top-color:transparent;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.auth-page{min-height:100vh;min-height:100dvh;display:grid;place-content:center;justify-items:center;padding:24px 16px;text-align:left}.auth-card{width:min(400px,100%);background:linear-gradient(180deg,var(--surface-2),var(--surface));border:1px solid var(--line);border-radius:24px;padding:30px 26px;box-shadow:var(--shadow-md);position:relative;overflow:hidden}.auth-card:before{content:"";position:absolute;inset:-40% -20% auto;height:70%;background:radial-gradient(50% 60% at 50% 0%,rgba(200,240,79,.1),transparent 70%);pointer-events:none}.auth-card .brand-mark{margin-bottom:20px;position:relative}.auth-card h1{font-size:1.65rem;line-height:1.35;margin-bottom:8px;letter-spacing:-.01em;position:relative}.auth-card .muted{margin-bottom:14px;position:relative}.auth-card button{margin-top:4px;position:relative}.auth-status{margin-top:14px;text-align:center;font-size:.88rem;color:var(--danger)}.app-root{max-width:620px;margin:0 auto;padding:0 16px calc(96px + env(safe-area-inset-bottom))}.app-header{position:sticky;top:0;z-index:10;display:flex;align-items:center;justify-content:space-between;margin:0 -16px;padding:14px 16px 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8px;border-radius:999px;white-space:nowrap}.app-nav{position:fixed;left:0;right:0;bottom:0;z-index:20;display:flex;background:#0a0e0be6;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-top:1px solid var(--line-soft);padding:8px 12px calc(8px + env(safe-area-inset-bottom))}.app-nav button{flex:1;display:flex;flex-direction:column;align-items:center;gap:4px;background:none;color:var(--ink-faint);padding:6px 4px;font-size:.72rem;font-weight:600;border-radius:var(--radius-sm)}.app-nav button.active{color:var(--brand);background:var(--brand-dim)}.card{background:linear-gradient(180deg,var(--surface-2),var(--surface));border:1px solid var(--line-soft);border-radius:var(--radius);padding:20px 18px;margin-bottom:14px;box-shadow:var(--shadow-sm)}.stage-card{border-top:1px solid var(--brand-line)}.card-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:14px}.card-head h1{font-size:1.3rem;letter-spacing:-.01em}.card-head h2{font-size:1.12rem}.goal-badge{display:inline-flex;align-items:center;gap:6px;font-family:var(--font-mono);background:var(--brand-dim);color:var(--brand);border:1px solid var(--brand-line);border-radius:999px;padding:5px 11px;font-size:.76rem;font-weight:700;white-space:nowrap}.status-banner{background:var(--surface-2);border:1px solid var(--line);border-radius:var(--radius-sm);border-left:3px solid var(--brand);padding:11px 14px;margin-bottom:14px;font-size:.92rem;color:var(--ink-soft);animation:slide-in .25s ease}@keyframes slide-in{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}.notice{display:flex;align-items:center;gap:10px;background:var(--warn-dim);color:var(--warn);border:1px solid rgba(255,200,97,.25);border-radius:var(--radius-sm);padding:10px 14px;font-size:.88rem;font-weight:600;margin-bottom:14px}.workspace-bar{display:grid;grid-template-columns:minmax(0,1fr) 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auto;width:68px;height:68px;border-radius:50%;background:var(--brand);color:var(--on-brand);box-shadow:var(--glow-brand)}.mic.recording{background:var(--danger);color:#1c0d0a;animation:pulse 1.4s infinite}@keyframes pulse{0%{box-shadow:0 0 #ff6b5e73}70%{box-shadow:0 0 0 16px #ff6b5e00}to{box-shadow:0 0 #ff6b5e00}}.secondary-actions{display:flex;flex:1;gap:8px}.secondary-actions button{flex:1;padding:12px 6px;font-size:.88rem}.recording-hint{text-align:center;margin-top:14px;color:var(--danger);font-size:.85rem;font-weight:600}.history-item{display:grid;gap:3px;width:100%;text-align:left;background:transparent;color:var(--ink);border:1px solid var(--line-soft);border-radius:var(--radius-sm);padding:13px 15px;margin-bottom:8px}.history-item:hover{border-color:var(--brand-line);background:var(--brand-dim)}.history-item b{font-size:.98rem}.history-item span{font-size:.84rem;color:var(--ink-soft)}.sentinel{height:1px}.empty{display:grid;justify-items:center;gap:6px;text-align:center;padding:34px 20px;color:var(--ink-faint)}.empty p{font-weight:700;color:var(--ink-soft)}.empty span{font-size:.85rem}.settings-stack .card{margin-bottom:14px}.field-row{display:grid;grid-template-columns:1fr 1fr;gap:10px}.field-row label,.field-row .toggle{margin:10px 0}.toggle{width:100%;display:flex;align-items:center;justify-content:space-between;gap:10px;background:var(--bg-deep);border:1px solid var(--line);border-radius:var(--radius-sm);padding:12px 14px;font-size:.86rem;font-weight:600;color:var(--ink-soft);text-align:left}.toggle.on{color:var(--ink);border-color:var(--brand-line)}.knob-track{flex:0 0 auto;width:40px;height:22px;border-radius:999px;background:var(--surface-3);border:1px solid var(--line);position:relative;transition:background .15s,border-color .15s}.toggle.on .knob-track{background:var(--brand);border-color:var(--brand)}.knob{position:absolute;top:2px;left:2px;width:16px;height:16px;border-radius:50%;background:var(--ink-soft);transition:transform .18s cubic-bezier(.2,.8,.3,1),background .15s}.toggle.on .knob{transform:translate(18px);background:var(--on-brand)}@media(min-width:720px){.app-root{padding-bottom:40px}.app-nav{position:static;display:flex;gap:6px;background:var(--surface-2);border:1px solid var(--line-soft);border-radius:999px;padding:5px;margin-bottom:18px}.app-nav button{flex-direction:row;gap:8px;padding:9px 18px;font-size:.88rem;border-radius:999px}.app-nav button.active{background:var(--brand-dim)}.workspace-bar{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}.challenge-actions{justify-content:center}.secondary-actions{flex:0 1 420px}}@media(prefers-reduced-motion:reduce){.mic.recording,.timer.urgent,.brand-mark.boot{animation:none}button,.knob{transition:none}}.scramble-bar{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:12px}.scramble-label{display:inline-flex;align-items:center;gap:7px;font-family:var(--font-mono);font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-faint)}.toggle.mini{width:auto;padding:7px 12px;font-size:.78rem;gap:10px;border-radius:999px}.toggle.mini .knob-track{width:34px;height:18px}.toggle.mini .knob{width:12px;height:12px;top:2px;left:2px}.toggle.mini.on .knob{transform:translate(16px)}.sentence-builder{min-height:60px;display:flex;flex-wrap:wrap;align-items:center;gap:8px;background:var(--bg-deep);border:1px dashed var(--brand-line);border-radius:var(--radius-sm);padding:12px;margin-bottom:12px}.sentence-builder.correct{border-style:solid;border-color:var(--brand);background:var(--brand-dim)}.builder-placeholder{color:var(--ink-faint);font-size:.9rem}.word-token{background:var(--surface-3);color:var(--ink);border:1px solid var(--line);border-radius:8px;padding:6px 11px;font-size:.95rem;font-weight:600}.word-token:hover{border-color:var(--danger);color:var(--danger)}.word-pool{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:8px}.word-chip{background:var(--surface-2);color:var(--ink);border:1px solid var(--line);border-radius:999px;padding:8px 14px;font-size:.95rem;font-weight:600;transition:background .15s,color .15s,border-color .15s,transform .1s}.word-chip:hover:not(:disabled){background:var(--brand-dim);color:var(--brand);border-color:var(--brand-line);transform:translateY(-1px)}.word-chip:disabled{opacity:.35;cursor:default}.scramble-feedback{text-align:center;margin:4px 0 0;color:var(--warn);font-size:.85rem;font-weight:600}.history-tools{display:flex;align-items:center;gap:8px}.history-tools .ws-select.compact{margin:0}.history-tools .ws-select.compact select{margin-top:0;padding:8px 10px;font-size:.84rem}.history-tools .quiet{flex:0 0 auto;padding:9px 12px}