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#e8ddc5}.feedback.correct{background:#eaf3e6;border-color:#cee0c5}.feedback.unclear{background:#eef2f4;border-color:#d4e1e3}.feedback strong{display:block;margin-bottom:5px}.feedback p{margin:6px 0}.hint{border-left:2px solid #b99b58;padding:9px 12px;color:#6d623e;background:#f8f5eb;font-size:12px;margin:15px 0}.empty-chat{padding:12px 4px;color:var(--muted);font-size:13px}.empty-chat h3{font-size:17px;color:var(--ink);font-weight:500;margin-top:0}.chat-message{margin:0 0 19px}.chat-message .who{font-size:9px;color:var(--muted);margin-bottom:5px}.chat-message p{white-space:pre-wrap;overflow-wrap:anywhere;font-size:13px;line-height:1.9;margin:0;border-radius:11px;padding:12px 14px;background:#f1f5ed}.chat-message.user p{background:#e9f0f3}.chat-message button{font-size:10px;min-height:30px;color:var(--green)}.chat-error{color:#8c552f;background:#fbf1e5;border-radius:8px;padding:12px;font-size:12px;margin-bottom:12px}.composer{border-top:1px solid var(--line);padding:15px 18px 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17px;background:#edf4e8;color:var(--green)}#thinking[hidden]{display:none}#thinking button{min-height:26px;margin-left:auto;font-size:10px}.spinner{border:2px solid #cadcc5;border-top-color:var(--green);width:12px;height:12px;border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.modal{border:1px solid var(--line);border-radius:20px;color:var(--ink);background:var(--paper);padding:25px;width:min(560px,calc(100vw - 28px));max-height:86dvh;overflow:auto;box-shadow:0 25px 90px #142a3433}.modal::backdrop{background:#1b333d65;backdrop-filter:blur(3px)}.modal.wide{width:min(780px,calc(100vw - 28px))}.modal-head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:20px}.modal h2{font-size:23px;line-height:1.4;margin:0}.modal p{font-size:13px;line-height:1.85}.modal label{font-size:12px}.modal select{width:100%;margin:6px 0 15px;font-size:12px}.modal-actions{display:flex;gap:10px;margin-top:18px;flex-wrap:wrap}.status-card{background:#eff4e9;border:1px solid #d8e3d1;border-radius:12px;padding:16px;margin-bottom:20px}.status-card strong{font-size:14px}.status-card p{font-size:12px;margin:5px 0 0;color:#617569}.fineprint{font-size:11px!important;color:var(--muted)}.auth-button{display:flex;width:100%;justify-content:center;align-items:center;background:#171c1a;color:white;border:1px solid #171c1a;border-radius:9px;padding:12px;margin:12px 0;gap:10px;font-size:14px;min-height:48px}.auth-button svg{width:22px;height:22px}.settings-status{font-size:12px;color:#9b5b37;margin-top:12px;white-space:pre-wrap}.settings-row{border-top:1px solid var(--line);padding-top:18px;margin-top:20px}.settings-row h3{font-size:14px;margin:0 0 8px}.pair-code{font:23px/2 ui-monospace,monospace;letter-spacing:4px;background:#eaf1e5;padding:8px 12px;display:block;border-radius:9px}.metric-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:22px}.metric{padding:15px;background:#edf3e7;border-radius:11px}.metric strong{display:block;font-size:24px;font-weight:550}.metric span{font-size:10px;color:var(--muted)}.record-list{display:flex;flex-direction:column;gap:12px}.record-item{border:1px solid var(--line);border-radius:12px;padding:14px}.record-item h3{font-size:13px;margin:0 0 5px}.record-item p{font-size:11px;color:var(--muted);margin:4px 0}.record-item button{font-size:11px;color:var(--green);min-height:32px}.record-outcome{font-size:10px;color:var(--green)}.legacy-note{font-size:11px;color:var(--muted);margin-top:15px}#pair-form{display:flex;flex-direction:column;gap:12px}#pair-code{font:22px ui-monospace,monospace;letter-spacing:3px;border:1px solid #c8d8c8;border-radius:9px;padding:12px}#toast{position:fixed;z-index:40;bottom:22px;left:50%;transform:translateX(-50%);background:#24493f;color:white;padding:12px 22px;border-radius:11px;box-shadow:0 5px 20px #17291d22;font-size:12px;max-width:90vw}#storage-warning{position:fixed;z-index:25;left:24px;bottom:22px;max-width:420px;background:#fff0d5;border:1px solid #ddc39a;border-radius:11px;padding:12px 18px;font-size:12px}.modal .inline-link{font-size:12px}body[aria-busy=true] .send{opacity:.65}.talk-badge{font-size:9px;color:var(--green)}
@media(max-width:1430px){.rail{display:none}.workspace{grid-template-columns:minmax(0,1fr) 365px;gap:20px;padding:20px}.topbar{padding:0 24px;gap:23px}.board-heading h1{font-size:22px}.model-label{font-size:8px}.board-foot span:last-child{display:none}}
@media(max-width:1000px) and (orientation:portrait){.topbar{height:72px;gap:14px;padding:0 19px}.brand{font-size:18px;gap:8px}.brandmark{width:33px;height:34px;font-size:23px;border-radius:10px 10px 10px 2px}.brand small{font-size:8px}.topic-select{margin-left:0}.topic-select select{font-size:12px}.top-actions{gap:8px}.connection{font-size:10px;padding:0 11px}.workspace{height:calc(100dvh - 72px);grid-template-columns:1fr;grid-template-rows:minmax(280px,43%) minmax(340px,1fr);gap:14px;padding:14px 18px}.board-heading{padding:15px 21px 4px}.board-heading h1{font-size:21px}.board-heading .eyebrow{font-size:9px;margin:0}.board-context{padding:0 21px 3px}.board-context p{font-size:10px}.scene{padding:0 18px}.formula-strip{padding:8px 20px;font-size:18px;gap:12px}.scene-control{padding:0 21px;gap:13px}.scene-control input{height:32px}.board-foot{display:none}.coach-heading{padding:12px 19px 8px}.coach-heading strong{font-size:14px}.coach-heading p{font-size:10px}.teacher-symbol{width:32px;height:32px}.coach-tabs{margin:0 20px}.coach-tabs button{min-height:36px;font-size:12px}.coach-scroll{padding:17px 23px}.lesson-text p{font-size:14px}.lesson-text h2{font-size:19px;margin:10px 0}.lesson-actions{margin-top:14px}.lesson-nav{margin-top:15px;padding-top:8px}.composer{padding:10px 20px}.composer textarea{min-height:55px;height:55px;margin-top:5px;font-size:13px}.composer>label{font-size:12px}.composer-tools{padding-top:5px}.voice-note{margin-top:4px}.chat-message p{font-size:14px}.model-label{display:none}}
@media(max-width:700px){.brand small{display:none}.topbar{height:64px;padding:0 13px;gap:9px}.brand{font-size:16px;letter-spacing:0}.brandmark{display:none}.topic-select select{max-width:160px;font-size:11px;padding:8px}.top-actions{gap:2px}.quiet{font-size:10px;padding:0 5px}.connection{font-size:0;padding:0 10px;min-height:34px}.connection i{width:8px;height:8px}.workspace{height:calc(100dvh - 64px);padding:8px;gap:8px;grid-template-columns:1fr;grid-template-rows:minmax(235px,38%) minmax(330px,1fr)}.board-card,.coach{border-radius:13px}.board-heading{padding:10px 15px 0}.board-heading h1{font-size:16px}.board-heading .eyebrow{font-size:8px}.board-heading .icon-button{width:32px;height:32px;min-height:32px}.board-context{padding:0 15px;font-size:9px}.board-context p{font-size:9px}.scene{padding:0 7px}.model-label{display:none}.formula-strip{font-size:16px;padding:6px 12px}.formula-strip small{font-size:8px}.scene-control{padding:0 13px;font-size:10px;gap:8px}.scene-control input{height:30px}.scene-control output{font-size:12px}.board-foot{display:none}.coach-heading{padding:10px 13px 5px}.coach-heading strong{font-size:12px}.coach-heading p{font-size:8px}.teacher-symbol{width:30px;height:30px}.coach-tabs{margin:0 13px}.coach-tabs button{min-height:32px;font-size:11px}.coach-scroll{padding:13px}.lesson-text p{font-size:13px}.composer{padding:8px 12px}.composer textarea{min-height:48px;height:48px;margin-top:4px;font-size:12px}.composer>label{font-size:10px}.composer-tools{padding-top:4px}.voice-note{font-size:8px}.modal{padding:20px}.metric-grid{gap:7px}.metric{padding:11px}.metric span{font-size:9px}.formula-strip small{max-width:100px}.kind-buttons button{font-size:10px}}
@media(max-height:690px) and (min-width:1001px){.topbar{height:66px}.workspace{height:calc(100dvh - 66px);padding:12px;gap:14px}.board-heading{padding:14px 20px 8px}.board-heading h1{font-size:19px}.board-context{padding:0 20px 6px}.board-foot{padding:0 20px 9px}.formula-strip{padding:9px 18px}.coach-heading{padding:12px 17px 8px}.composer{padding:10px 16px}.composer textarea{min-height:50px;height:50px}.coach-scroll{padding:16px}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;scroll-behavior:auto!important}}

.scene{position:relative;overflow:hidden}.scene svg{position:absolute;inset:0;width:100%;height:100%;max-height:none;overflow:visible}

.voice-rate{display:grid;grid-template-columns:35px 1fr 60px;align-items:center;gap:16px;margin:18px 0}.voice-rate output{text-align:right;font-size:12px;font-variant-numeric:tabular-nums}.voice-sample{background:#f1f5ed;border-left:3px solid #8fac9d;padding:8px 17px;border-radius:8px;margin-top:20px}.voice-sample p{margin:4px 0 10px}.sound-settings{color:var(--green);text-decoration:underline;text-underline-offset:4px;min-width:36px}.composer-tools{gap:6px}

.voice-auto{display:flex;align-items:center;gap:8px;margin:18px 0}.voice-auto input{flex-shrink:0}#natural-voice-controls[hidden],#system-voice-controls[hidden]{display:none}