:root{color:#1f2933;font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:#f5f7f4;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-size:16px;line-height:1.5}*{box-sizing:border-box}body{min-width:320px;margin:0}button,input,textarea{font:inherit}button{color:#fff;cursor:pointer;background:#1d4f45;border:1px solid #1d4f45;border-radius:8px;justify-content:center;align-items:center;gap:7px;min-height:40px;padding:9px 14px;font-weight:700;display:inline-flex}button:hover{background:#153b34}button:disabled{cursor:not-allowed;opacity:.55}button.ghost,.mode-toggle button,.logout-button{color:#243b53;background:#fff}button.ghost:hover,.mode-toggle button:hover,.logout-button:hover{background:#eef3ef}button.danger{color:#b42318;background:#fff;border-color:#d64545}button.danger:hover{background:#fff1f1}input,textarea{color:#1f2933;background:#fff;border:1px solid #cbd5d1;border-radius:8px;outline:none;width:100%;padding:12px 14px}img{max-width:100%;display:block}textarea{resize:vertical}input:focus,textarea:focus{border-color:#2f7d6d;box-shadow:0 0 0 3px #2f7d6d24}.app-shell{max-width:1440px;min-height:100vh;margin:0 auto;padding:24px}.auth-shell{align-items:center;min-height:100vh;padding:20px;display:grid}.auth-card{background:#fff;border:1px solid #d9e2dc;border-radius:8px;width:100%;max-width:430px;margin:0 auto;padding:28px;box-shadow:0 24px 70px #102a431f}.auth-icon{color:#1d4f45;background:#e9f6ef;border-radius:8px;justify-content:center;align-items:center;width:54px;height:54px;margin-bottom:18px;display:flex}.auth-copy{color:#62756f;margin-top:10px}.auth-form{gap:12px;margin-top:20px;display:grid}.auth-form label{color:#52645f;gap:6px;font-weight:800;display:grid}.topbar{justify-content:space-between;align-items:center;gap:20px;margin-bottom:18px;display:flex}.top-actions{flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:10px;display:flex}.eyebrow{color:#b25f20;text-transform:uppercase;margin:0 0 4px;font-size:.82rem;font-weight:800}h1,h2,h3,p{margin:0}h1{color:#102a43;font-size:1.8rem;line-height:1.18}h2{color:#102a43;margin-bottom:12px;font-size:1.1rem}h3{color:#102a43;font-size:1rem;line-height:1.2}.mode-toggle{background:#fff;border:1px solid #d9e2dc;border-radius:10px;padding:4px;display:flex}.mode-toggle button{border-color:#0000;min-width:96px}.mode-toggle button.active{color:#fff;background:#1d4f45}.trainer-panel{background:#fff;border:1px solid #d9e2dc;border-radius:8px;margin-bottom:20px;padding:16px}.training-menu{grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;display:grid}.training-card{color:#1f2933;text-align:left;background:#fff;border:1px solid #d9e2dc;border-radius:8px;justify-content:stretch;align-items:flex-start;gap:12px;min-height:210px;padding:18px;display:grid}.training-card:hover{background:#f8fbf9;border-color:#94aaa2}.training-card.accent{border-color:#f5c542;box-shadow:0 12px 36px #7d5d0d1a}.training-card.muted-card{cursor:default;opacity:.78}.training-card strong{color:#102a43;font-size:1.1rem}.training-card span:last-child{color:#62756f;font-weight:500}.training-icon{color:#1d4f45;background:#e9f6ef;border-radius:8px;justify-content:center;align-items:center;width:54px;height:54px;display:flex}.picture-trainer{gap:16px;display:grid}.picture-layout{grid-template-columns:minmax(0,.95fr) minmax(380px,1.05fr);gap:16px;display:grid}.picture-stage,.picture-side section,.picture-chat,.guided-card{background:#fff;border:1px solid #d9e2dc;border-radius:8px;padding:16px}.picture-stage{gap:12px;display:grid}.picture-side{gap:16px;display:grid}.picture-toolbar,.section-heading{justify-content:space-between;align-items:flex-start;gap:12px;display:flex}.picture-toolbar p,.section-heading p{color:#62756f;margin-top:4px}.upload-button{color:#1d4f45;cursor:pointer;background:#fff;border:1px solid #1d4f45;border-radius:8px;align-items:center;gap:7px;min-height:40px;padding:9px 14px;font-weight:800;display:inline-flex}.upload-button input{display:none}.picture-search{grid-template-columns:minmax(0,1fr) auto auto auto;gap:10px;display:grid}.selected-picture{background:#eef3ef;border:1px dashed #b8c7c1;border-radius:8px;place-items:center;min-height:430px;display:grid;overflow:hidden}.selected-picture img{object-fit:contain;width:100%;max-height:580px}.picture-placeholder{color:#62756f;text-align:center;justify-items:center;gap:10px;padding:28px;display:grid}.picture-bank{grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin-top:14px;display:grid}.picture-thumb{color:#243b53;text-align:left;background:#fff;border:1px solid #d9e2dc;justify-content:stretch;gap:6px;min-height:0;padding:6px;display:grid}.picture-thumb.active{border-color:#f5c542;box-shadow:0 0 0 2px #f5c54252}.picture-thumb img{aspect-ratio:4/3;object-fit:cover;border-radius:6px;width:100%}.picture-thumb span{text-overflow:ellipsis;white-space:nowrap;font-size:.78rem;overflow:hidden}.keywords-card{gap:12px;display:grid}.scene-summary{color:#243b53;background:#f3f6f4;border-radius:8px;padding:10px}.keyword-list{gap:8px;display:grid}.keyword-list article{background:#f9fbf9;border:1px solid #e2e8e4;border-radius:8px;gap:2px;padding:9px;display:grid}.keyword-list strong{color:#102a43}.keyword-list span,.keyword-list small,.structure-list p,.empty-block{color:#62756f}.structure-list{gap:7px;display:grid}.structure-list p{background:#fff9df;border-radius:8px;padding:8px}.picture-chat{grid-template-rows:auto minmax(260px,1fr) auto;gap:14px;min-height:620px;display:grid}.chat-feed{gap:10px;max-height:430px;display:grid;overflow:auto}.chat-empty,.chat-message{border-radius:8px;padding:12px}.chat-empty{color:#62756f;background:#f3f6f4}.chat-message.user{background:#e9f6ef;margin-left:min(120px,18%)}.chat-message.assistant{background:#f9fbf9;border:1px solid #e2e8e4;margin-right:min(80px,12%)}.feedback-card{gap:8px;margin-top:10px;display:grid}.feedback-card h3{margin-top:6px;font-size:.9rem}.feedback-card ul{margin:0;padding-left:20px}.score-row{align-items:center;gap:10px;display:flex}.score-row strong{color:#1d4f45;font-size:1.2rem}.score-row span{color:#52645f;background:#eef3ef;border-radius:999px;padding:4px 8px;font-size:.8rem;font-weight:800}.improved-text{background:#fff;border-left:3px solid #1d4f45;padding:8px 10px}.picture-input{grid-template-columns:minmax(0,1fr);gap:10px;display:grid}.picture-input button{justify-self:end}.guided-card{gap:14px;display:grid}.guided-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;display:grid}.guided-question{background:#f9fbf9;border:1px solid #e2e8e4;border-radius:8px;gap:10px;padding:12px;display:grid}.question-head{align-items:flex-start;gap:10px;display:flex}.question-head>span{color:#fff;background:#1d4f45;border-radius:999px;flex:none;justify-content:center;align-items:center;width:28px;height:28px;font-size:.82rem;font-weight:900;display:inline-flex}.question-head strong{color:#102a43;display:block}.question-head small,.guided-question>p{color:#62756f}.guided-review{background:#fff;border-left:3px solid #f5c542;gap:8px;padding:10px;display:grid}.guided-review ul{margin:0;padding-left:20px}.guided-actions{justify-content:flex-end;display:flex}.guided-summary{background:#e9f6ef;border:1px solid #c7e8d4;border-radius:8px;gap:8px;padding:12px;display:grid}.mobile-arena,.mobile-safe-summary{display:none}.game-strip{grid-template-columns:minmax(170px,1.5fr) repeat(3,minmax(86px,.5fr)) auto auto;align-items:center;gap:10px;margin-bottom:14px;display:grid}.game-strip div{background:#f3f6f4;border:1px solid #d9e2dc;border-radius:8px;padding:8px 10px}.game-strip span{color:#62756f;text-transform:uppercase;font-size:.76rem;font-weight:700;display:block}.game-strip strong{color:#102a43;overflow-wrap:anywhere;display:block}.input-row{grid-template-columns:minmax(0,1fr) auto;gap:10px;display:grid}.message{border-radius:8px;margin-top:12px;padding:10px 12px}.message.success{color:#1d4f45;background:#e9f6ef}.message.error{color:#b42318;background:#fff1f1}.tense-board{grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;display:grid}.period-column{flex-direction:column;gap:12px;min-width:0;display:flex}.tense-card{background:#fff;border:1px solid #d9e2dc;border-radius:8px;min-height:220px;padding:14px;box-shadow:0 10px 30px #102a430d}.tense-card.target{border-color:#f5c542;box-shadow:0 0 0 3px #f5c54247,0 12px 36px #7d5d0d1f}.tense-card header{justify-content:space-between;align-items:flex-start;gap:12px;display:flex}.tense-card header p{color:#52645f;margin-top:4px;font-size:.86rem}.tense-card header .tense-ru{color:#7b8c86;font-size:.78rem;font-weight:700}.tense-card header span{color:#1d4f45;text-align:center;background:#eef3ef;border-radius:999px;min-width:28px;padding:3px 8px;font-size:.78rem;font-weight:800}.example{color:#8a4b1c;margin-top:12px;font-size:.9rem}.sentence-list{gap:10px;margin-top:12px;display:grid}.sentence-item{text-align:left;background:#f9fbf9;border:1px solid #e2e8e4;border-radius:8px;padding:10px}.sentence-item p{color:#102a43;overflow-wrap:anywhere}.sentence-item small{color:#667a74;margin-top:6px;display:block}.item-actions{flex-wrap:wrap;gap:8px;margin-top:10px;display:flex}.item-actions button{min-height:32px;padding:6px 10px;font-size:.82rem}.empty{color:#8a9b95;margin-top:18px;font-size:.9rem}.reset-button{color:#243b53;background:#fff;border-color:#b8c7c1;margin-top:18px}.modal-backdrop{z-index:10;background:#102a4370;justify-content:center;align-items:center;padding:20px;display:flex;position:fixed;inset:0}.modal{background:#fff;border-radius:8px;gap:14px;width:min(100%,640px);max-width:640px;padding:20px;display:grid;box-shadow:0 24px 72px #102a433d}.modal label{color:#52645f;gap:6px;font-weight:700;display:grid}.modal ul{margin:0;padding-left:20px}.modal-actions{justify-content:flex-end;gap:10px;display:flex}@media (width<=1120px){.training-menu,.picture-layout,.tense-board{grid-template-columns:1fr}.period-column{grid-template-columns:repeat(2,minmax(0,1fr));display:grid}.period-column h2{grid-column:1/-1}}@media (width<=760px){:root{background:#edf3ef}.app-shell{padding:12px 10px 108px}.topbar,.input-row{grid-template-columns:1fr;align-items:stretch}.topbar{gap:12px;margin-bottom:12px;display:grid}.eyebrow{font-size:.72rem}h1{font-size:1.22rem}.mode-toggle{width:100%}.mode-toggle button{flex:1;min-width:0}.top-actions,.training-menu,.picture-search,.picture-input,.picture-toolbar,.section-heading{grid-template-columns:1fr;display:grid}.training-card{min-height:0}.picture-stage,.picture-side section,.picture-chat,.guided-card{padding:12px}.selected-picture{min-height:230px}.picture-bank{grid-template-columns:repeat(2,minmax(0,1fr))}.chat-message.user,.chat-message.assistant{margin-left:0;margin-right:0}.guided-grid{grid-template-columns:1fr}.guided-actions{display:grid}.game-strip,.period-column{grid-template-columns:1fr}.trainer-panel{background:0 0;border:0;margin-bottom:12px;padding:0}.game-strip{display:none}.mobile-arena{color:#fff;z-index:3;background:#102a43;border:1px solid #173b5f;border-radius:8px;gap:12px;margin-bottom:10px;padding:14px;display:grid;position:sticky;top:8px;box-shadow:0 18px 42px #102a4333}.arena-target span,.arena-target small{color:#b7c6d8;display:block}.arena-target span{letter-spacing:0;text-transform:uppercase;font-size:.72rem;font-weight:800}.arena-target strong{margin:2px 0 4px;font-size:1.34rem;line-height:1.15;display:block}.arena-target small{font-weight:700}.arena-stats{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;display:grid}.arena-stats span{color:#dbe7f3;text-align:center;background:#ffffff1a;border:1px solid #ffffff29;border-radius:8px;padding:8px;font-size:.78rem}.arena-stats strong{color:#f5c542;font-size:1rem;display:block}.arena-actions{grid-template-columns:1fr 1fr;gap:8px;display:grid}.arena-actions button{color:#102a43;background:#f5c542;border-color:#f5c542}.input-row{padding:10px 10px calc(10px + env(safe-area-inset-bottom));z-index:5;background:#fffffff5;border:1px solid #d5e0d9;border-radius:10px 10px 0 0;gap:8px;display:grid;position:fixed;bottom:0;left:0;right:0;box-shadow:0 -16px 32px #102a431f}.input-row input{min-height:48px}.input-row button{width:100%}.message{margin:10px 0 0;font-size:.88rem}.tense-board{gap:12px}.period-column{gap:8px}.period-column h2{z-index:2;background:#edf3ef;margin:2px 0 0;padding:8px 2px 2px;position:sticky;top:0}.tense-card{box-shadow:none;min-height:0;padding:10px}.tense-card.target{background:#fff9df;border-color:#f5c542;box-shadow:0 0 0 2px #f5c54261}.tense-card header{align-items:center}.tense-card h3{font-size:.94rem}.tense-card header .tense-ru{display:none}.tense-card header p:not(.tense-ru){margin-top:2px;font-size:.76rem}.tense-card header span{min-width:26px}.example{display:none}.tense-card.target .example{margin-top:8px;font-size:.82rem;display:block}.sentence-list{max-height:180px;overflow:auto}.sentence-item{padding:8px}.sentence-item small{font-size:.76rem}.item-actions{grid-template-columns:repeat(3,minmax(0,1fr));display:grid}.item-actions button{gap:4px;min-width:0;padding-inline:6px}.empty{display:none}.reset-button{width:100%;margin-bottom:12px}.mobile-safe-summary{color:#62756f;justify-content:center;align-items:center;gap:12px;margin:10px 0 0;font-size:.82rem;display:flex}.modal{max-height:calc(100vh - 28px);padding:16px;overflow:auto}.modal-actions{grid-template-columns:1fr 1fr;display:grid}}