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var(--ease);background:transparent;color:var(--primary);text-decoration:none;white-space:nowrap}.btn:active{transform:scale(.98)}.btn[disabled]{opacity:.45;cursor:not-allowed}.btn-filled{background:var(--primary);color:var(--on-primary)}.btn-filled:hover:not([disabled]){box-shadow:var(--shadow-1);background:#0a4fba}.btn-tonal{background:var(--secondary-container);color:var(--on-secondary-container)}.btn-tonal:hover:not([disabled]){box-shadow:var(--shadow-1)}.btn-outline{border-color:var(--outline);color:var(--primary)}.btn-outline:hover:not([disabled]),.btn-text:hover:not([disabled]){background:color-mix(in srgb,var(--primary) 8%,transparent)}.btn-danger{color:var(--error);border-color:var(--error)}.btn-lg{min-height:60px;font-size:1.1rem;padding:0 32px}.btn-icon{width:48px;padding:0}.card{background:var(--surface);border:1px solid var(--outline-variant);border-radius:var(--radius-md);padding:20px}.card-tonal{background:var(--surface-container);border-color:transparent}.card-hero{border-radius:var(--radius-lg);padding:28px;box-shadow:var(--shadow-1);border-color:transparent}.chip{display:inline-flex;align-items:center;gap:6px;min-height:36px;padding:0 14px;border:1px solid var(--outline);border-radius:10px;background:transparent;font:500 .85rem/1 var(--font);color:var(--on-surface-variant);cursor:default}button.chip{cursor:pointer}button.chip[aria-pressed=true],.chip.selected{background:var(--secondary-container);color:var(--on-secondary-container);border-color:transparent}.badge{display:inline-block;padding:2px 10px;border-radius:999px;font-size:.75rem;font-weight:500;background:var(--tertiary-container);color:var(--on-tertiary-container)}.badge.warn{background:var(--warn-container);color:var(--on-warn-container)}.badge.blue{background:var(--primary-container);color:var(--on-primary-container)}.tile{display:flex;flex-direction:column;gap:10px;align-items:flex-start;text-align:left;padding:20px;min-height:140px;border:0;border-radius:var(--radius-lg);font:inherit;color:var(--on-surface);cursor:pointer;transition:transform .2s var(--ease),box-shadow .2s var(--ease)}.tile:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}.tile .emoji{font-size:2.2rem;line-height:1}.tile .label{font-size:1.15rem;font-weight:500}.tone-blue{background:var(--primary-container)}.tone-green{background:#c4eed0}.tone-yellow{background:#ffefb8}.tone-red{background:#fad2cf}.tone-purple{background:#e9ddff}.tone-teal{background:#c8f0ee}.field{display:flex;flex-direction:column;gap:6px}.field label,.label{font-size:.85rem;font-weight:500;color:var(--on-surface-variant)}.input,select.input,textarea.input{width:100%;min-height:52px;padding:12px 16px;font:inherit;color:inherit;background:var(--surface);border:1px solid var(--outline);border-radius:var(--radius-sm)}.input:hover{border-color:var(--on-surface)}.input:focus{outline:2px solid var(--primary);outline-offset:-1px;border-color:var(--primary)}textarea.input{resize:vertical;min-height:96px}.switch-row{display:flex;align-items:center;gap:12px;padding:10px 0}.switch-row .text{flex:1}.switch{position:relative;width:52px;height:32px;flex:none}.switch input{position:absolute;inset:0;opacity:0;margin:0;cursor:pointer;z-index:1}.switch .track{position:absolute;inset:0;border-radius:999px;border:2px solid var(--outline);background:var(--surface-high);transition:all .2s var(--ease)}.switch .thumb{position:absolute;top:8px;left:8px;width:16px;height:16px;border-radius:50%;background:var(--outline);transition:all .2s var(--ease)}.switch input:checked~.track{background:var(--primary);border-color:var(--primary)}.switch input:checked~.thumb{left:24px;top:4px;width:24px;height:24px;background:#fff}.switch input:focus-visible~.track{outline:3px solid var(--primary);outline-offset:2px}input[type=range]{width:100%;accent-color:var(--primary)}.notice{display:flex;gap:12px;padding:14px 16px;border-radius:var(--radius-sm);background:var(--primary-container);color:var(--on-primary-container);font-size:.9rem}.notice.warn{background:var(--warn-container);color:var(--on-warn-container)}.notice.error{background:var(--error-container);color:var(--on-error-container)}.notice.ok{background:var(--tertiary-container);color:var(--on-tertiary-container)}.progress{height:10px;border-radius:999px;background:var(--surface-high);overflow:hidden}.progress>div{height:100%;border-radius:999px;background:var(--primary);transition:width .4s var(--ease)}.steps{display:flex;gap:6px}.steps span{flex:1;height:8px;border-radius:999px;background:var(--surface-high)}.steps span.done{background:var(--g-green)}.steps span.now{background:var(--primary)}.schedule{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:12px}.schedule .arrow{font-size:1.6rem;color:var(--on-surface-variant)}.sched-card{padding:16px;border-radius:var(--radius-md);background:var(--surface);border:2px solid var(--outline-variant);display:flex;flex-direction:column;gap:4px}.sched-card.first{border-color:var(--primary)}.sched-card .tag{font-size:.75rem;letter-spacing:.06em;text-transform:uppercase;font-weight:500;color:var(--on-surface-variant)}.lesson-top{display:flex;align-items:center;gap:12px;margin-bottom:16px;flex-wrap:wrap}.lesson-top .progress-wrap{flex:1;min-width:140px}.tutor-card{display:flex;gap:16px;align-items:flex-start}.avatar{flex:none;width:56px;height:56px;border-radius:18px;background:var(--primary-container);display:grid;place-items:center}.avatar svg{width:30px;height:30px;fill:var(--primary)}.avatar.cheer{animation:pop .5s var(--ease);background:var(--tertiary-container)}.tutor-text{flex:1;min-width:0;font-size:1.15rem;max-width:62ch;overflow-wrap:anywhere}.tutor-text p:last-child{margin-bottom:0}.tutor-text ul,.tutor-text ol{padding-left:1.3em;margin:0 0 .75em}.tutor-text li{margin-bottom:.35em}.tutor-text table{border-collapse:collapse;margin:0 0 .75em}.tutor-text th,.tutor-text td{border:1px solid var(--outline-variant);padding:6px 12px}.tutor-text code{background:var(--surface-container);border-radius:6px;padding:1px 6px}.question-prompt{font-size:1.25rem;font-weight:500;margin:20px 0 14px}.options{display:grid;gap:12px}.option{min-height:60px;text-align:left;padding:14px 20px;border-radius:var(--radius-md);border:2px solid var(--outline-variant);background:var(--surface);font:inherit;font-size:1.1rem;cursor:pointer;color:var(--on-surface);transition:all .15s var(--ease)}.option{display:flex;align-items:center}.option p,.question-prompt p{margin:0}.option:hover:not([disabled]){border-color:var(--primary);background:color-mix(in srgb,var(--primary) 6%,var(--surface))}.option.picked{border-color:var(--primary);background:var(--primary-container)}.answer-row{display:flex;gap:12px;align-items:stretch}.answer-row .input{font-size:1.15rem}.feedback{display:flex;gap:12px;align-items:center;padding:14px 18px;border-radius:var(--radius-md);margin-bottom:16px;font-weight:500}.feedback.correct{background:var(--tertiary-container);color:var(--on-tertiary-container);animation:pop .4s var(--ease)}.feedback.partial{background:var(--warn-container);color:var(--on-warn-container)}.feedback.incorrect{background:var(--primary-container);color:var(--on-primary-container)}.help-row{display:flex;gap:8px;flex-wrap:wrap;margin-top:20px}.dots{display:inline-flex;gap:6px;padding:8px 0}.dots span{width:10px;height:10px;border-radius:50%;background:var(--outline);animation:bounce 1.2s infinite var(--ease)}.dots span:nth-child(2){animation-delay:.15s}.dots span:nth-child(3){animation-delay:.3s}.stars-pill{display:inline-flex;align-items:center;gap:6px;min-height:36px;padding:0 14px;border-radius:999px;background:var(--warn-container);color:var(--on-warn-container);font-weight:500}.timer-pill{display:inline-flex;align-items:center;gap:6px;min-height:36px;padding:0 14px;border-radius:999px;background:var(--surface-container);font-variant-numeric:tabular-nums}.toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%);z-index:30;background:#303030;color:#fff;padding:14px 20px;border-radius:12px;box-shadow:var(--shadow-2);max-width:min(92vw,520px)}.breath{width:160px;height:160px;border-radius:50%;background:var(--primary-container);margin:12px auto;display:grid;place-items:center;animation:breathe 8s infinite ease-in-out;color:var(--on-primary-container);font-weight:500}.center{text-align:center}.stat{display:flex;flex-direction:column;gap:2px;padding:16px;border-radius:var(--radius-md);background:var(--surface-container)}.stat .num{font-size:2rem;font-weight:500;line-height:1.1}.bar-chart{display:flex;align-items:flex-end;gap:8px;height:120px}.bar-chart .bar{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;gap:4px;height:100%;font-size:.7rem;color:var(--on-surface-variant)}.bar-chart .bar div{width:100%;max-width:40px;background:var(--primary);border-radius:8px 8px 2px 2px;min-height:2px}table.plain{width:100%;border-collapse:collapse}table.plain th{text-align:left;font-size:.8rem;color:var(--on-surface-variant);font-weight:500}table.plain th,table.plain td{padding:10px 8px;border-bottom:1px solid var(--outline-variant)}details.transcript{border:1px solid var(--outline-variant);border-radius:var(--radius-sm);padding:10px 14px}details.transcript summary{cursor:pointer;font-weight:500}.line{padding:6px 0}.line b{color:var(--primary);font-weight:500}@keyframes pop{0%{transform:scale(.94)}60%{transform:scale(1.04)}to{transform:scale(1)}}@keyframes bounce{0%,80%,to{transform:translateY(0);opacity:.5}40%{transform:translateY(-5px);opacity:1}}@keyframes breathe{0%,to{transform:scale(.8)}50%{transform:scale(1.15)}}@keyframes fade{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}.fade-in{animation:fade .3s var(--ease)}@media(max-width:600px){h1{font-size:1.6rem}.lesson-top .progress-wrap{order:3;flex:1 1 100%}.lesson-top .timer-pill{margin-left:auto}.schedule{grid-template-columns:1fr}.schedule .arrow{transform:rotate(90deg);justify-self:center}.tutor-card{flex-direction:column}.card-hero{padding:20px}.answer-row{flex-direction:column}}