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var(--dark-deep);pointer-events:none;background-size:200% 100%,100% 100%;animation:1.6s infinite deck-shimmer;position:absolute;inset:0}.lesson-deck-wrap{width:100%;position:relative}.lesson-deck-toolbar{justify-content:flex-end;margin-bottom:8px;display:flex}.lesson-deck-expand{min-height:44px;padding:8px 14px;font-size:13px}.lesson-deck-wrap--expanded{z-index:100;padding:max(12px, env(safe-area-inset-top)) max(12px, env(safe-area-inset-right)) max(12px, env(safe-area-inset-bottom)) max(12px, env(safe-area-inset-left));background:var(--dark-deep);flex-direction:column;gap:8px;display:flex;position:fixed;inset:0}.lesson-deck-wrap--expanded .lesson-deck-toolbar{flex-shrink:0;margin-bottom:0}.lesson-deck-wrap--expanded .lesson-deck-frame{min-height:0;aspect-ratio:unset;flex:1}@keyframes deck-shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.lesson-tasks{flex-direction:column;gap:2px;display:flex}.lesson-tasks .panel-title{margin-bottom:8px}.prepare-content{background:var(--dark-raised);border:1px solid var(--dark-edge);border-radius:var(--r-md);margin-bottom:20px;padding:20px 24px}.prepare-body{font:400 14px/1.7 var(--font-body);color:var(--cream-muted);word-break:break-word}.retrieval-anchor-box{border-left:3px solid var(--terra-glow);font:400 16px/1.6 var(--font-body);color:var(--cream);background:color-mix(in srgb, var(--terra-glow) 6%, transparent);border-radius:0 var(--r-sm) var(--r-sm) 0;padding:12px 16px}.retrieval-trigger{background:var(--dark-raised);border:1px solid var(--dark-edge);border-radius:var(--r-md);flex-direction:column;gap:12px;margin-top:20px;padding:20px 24px;display:flex}.retrieval-question{font:400 15px/1.6 var(--font-body);color:var(--cream)}.retrieval-done{text-align:center;padding:16px}.retrieval-ai-response{font:400 14px/1.6 var(--font-body);color:var(--cream-muted);background:var(--dark-raised);border-left:3px solid var(--terra-glow);border-radius:6px;padding:12px 16px}.retrieval-confirmed{font:500 13px/1 var(--font-mono);color:var(--terra-glow);margin-top:8px}.char-count{font:400 12px/1 var(--font-mono);color:var(--cream-dim)}.reflection-form{flex-direction:column;gap:20px;display:flex}.reflection-question{flex-direction:column;gap:8px;display:flex}.reflection-q-text{font:400 15px/1.6 var(--font-body);color:var(--cream)}.reflection-done{text-align:center;font:500 13px/1 var(--font-mono);color:var(--terra-glow);padding:16px}.lesson-solution{display:flex}.solution-trigger{font:500 13px/1 var(--font-body);color:var(--cream-dim);background:var(--dark-raised);border:1px dashed color-mix(in srgb, var(--terra-deep) 70%, transparent);border-radius:var(--r-pill);cursor:pointer;-webkit-user-select:none;user-select:none;padding:10px 18px}.solution-trigger:hover{color:var(--cream);border-color:var(--terra-glow)}.solution-text{font:400 13px/1.6 var(--font-mono);color:var(--cream);background:var(--dark-deep);border:1px solid color-mix(in srgb, var(--olive) 35%, transparent);border-radius:var(--r-md);white-space:pre-wrap;width:100%;padding:16px 18px}.inline-code{font:500 .88em var(--font-mono);color:var(--terra-glow);background:color-mix(in srgb, var(--olive) 16%, transparent);border:1px solid color-mix(in srgb, var(--olive) 32%, transparent);white-space:nowrap;border-radius:5px;padding:.08em .42em}.btn-confirm{background:var(--terra);color:var(--dark-deep);font:600 14px/1 var(--font-body);border-radius:var(--r-pill);cursor:pointer;border:none;align-self:flex-start;padding:12px 24px;transition:background .14s}.btn-confirm:hover{background:var(--terra-glow)}.auth-shell{place-items:center;min-height:100vh;padding:32px;display:grid}.auth-card{background:var(--dark);border:1px solid color-mix(in srgb, var(--terra-deep) 50%, transparent);border-radius:20px;flex-direction:column;gap:18px;width:100%;max-width:420px;padding:40px;display:flex}.auth-title{font:700 clamp(26px, 7vw, 34px)/1 var(--font-display);letter-spacing:-.02em;color:var(--cream)}.auth-title .accent{color:var(--terra-glow)}.auth-sub{font:400 15px/1.5 var(--font-body);color:var(--cream-muted)}.btn-google{background:var(--cream);color:var(--dark-deep);font:600 14px/1 var(--font-body);border-radius:var(--r-pill);cursor:pointer;border:none;padding:13px 20px;transition:opacity .14s}.btn-google:hover{opacity:.9}.auth-divider{color:var(--cream-dim);font:400 12px/1 var(--font-mono);align-items:center;gap:12px;display:flex}.auth-divider:before,.auth-divider:after{content:"";background:var(--dark-edge);flex:1;height:1px}.auth-form{flex-direction:column;gap:12px;display:flex}.auth-input{background:var(--dark-raised);border:1px solid var(--dark-edge);color:var(--cream);font:400 15px/1.2 var(--font-body);border-radius:12px;padding:12px 16px}.auth-input:focus{border-color:var(--terra-glow);outline:none}.auth-form .btn-confirm{text-align:center;align-self:stretch}.auth-hint{font:400 12px/1.4 var(--font-mono);color:var(--cream-dim)}.auth-error{font:400 13px/1.4 var(--font-body);color:var(--terra-glow)}.task-card{background:var(--dark-raised);border:1px solid var(--dark-edge);border-radius:14px;flex-direction:column;gap:16px;margin-bottom:12px;padding:24px;display:flex}.task-card[data-done=true]{border-color:color-mix(in srgb, var(--terra) 40%, transparent)}.task-input{background:var(--dark);border:1px solid var(--dark-edge);width:100%;color:var(--cream);font:400 14px/1.5 var(--font-mono);resize:vertical;border-radius:10px;padding:12px 14px}.task-input:focus{border-color:var(--terra-glow);outline:none}.task-feedback{background:var(--dark);border-left:3px solid var(--terra);font:400 14px/1.5 var(--font-body);color:var(--cream-muted);border-radius:6px;padding:10px 12px}.task-actions{flex-wrap:wrap;align-items:center;gap:12px;display:flex}.task-done-badge{font:500 13px/1 var(--font-mono);color:var(--terra-glow)}.criteria-results{flex-direction:column;gap:6px;display:flex}.criterion-row{font:400 13px/1.4 var(--font-body);border-radius:6px;align-items:flex-start;gap:8px;padding:8px 10px;animation:.4s cubic-bezier(.2,.75,.25,1) both lwReveal;display:flex}.criterion-met{background:color-mix(in srgb, var(--olive) 10%, transparent)}.criterion-unmet{background:color-mix(in srgb, var(--terra) 15%, transparent)}.criterion-icon{flex-shrink:0;margin-top:1px;font-size:14px}.criterion-met .criterion-icon{color:var(--olive)}.criterion-unmet .criterion-icon{color:var(--terra)}.criterion-copy{flex-direction:column;gap:2px;display:flex}.criterion-label{color:var(--cream);font-weight:600}.criterion-comment{color:var(--cream-muted)}.feedback-ack{border-color:var(--terra);width:100%;color:var(--terra-glow)}.feedback-ack:hover{border-color:var(--terra-glow);color:var(--cream)}.verdict-card{border:1px solid var(--dark-edge);background:var(--dark-raised);border-radius:12px;flex-direction:column;gap:12px;margin-top:14px;padding:14px 16px;animation:.35s cubic-bezier(.2,.75,.25,1) both lwScaleIn;display:flex}.verdict-card--pass{border-color:color-mix(in srgb, var(--olive) 35%, transparent)}.verdict-card--fail,.verdict-card--error{border-color:color-mix(in srgb, var(--terra-glow) 30%, transparent)}.verdict-header{justify-content:space-between;align-items:center;gap:12px;display:flex}.verdict-badge{font:600 13px/1 var(--font-mono);color:var(--terra-glow)}.verdict-card--pass .verdict-badge{color:var(--olive)}.verdict-score{font:700 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var(--font-body);cursor:pointer;background:0 0;padding:8px 16px}.nav-signout:hover{border-color:var(--terra-glow);color:var(--cream)}.nav-menu-btn{background:var(--dark-raised);border:1px solid var(--dark-edge);border-radius:var(--r-md);min-width:44px;min-height:44px;color:var(--cream);font:600 13px/1 var(--font-body);cursor:pointer;justify-content:center;align-items:center;padding:8px 14px;display:none}.nav-menu-btn:hover{border-color:var(--terra-glow);color:var(--terra-glow)}.nav-overlay{z-index:85;background:#00000073;position:fixed;inset:0}.nav-drawer{z-index:90;background:var(--dark-raised);border-left:1px solid var(--dark-edge);width:min(320px,92vw);height:100dvh;padding:20px;padding-bottom:max(20px, env(safe-area-inset-bottom));flex-direction:column;gap:8px;animation:.28s cubic-bezier(.2,.75,.25,1) both navDrawerIn;display:flex;position:fixed;top:0;right:0;box-shadow:-12px 0 40px #00000080}@keyframes 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var(--dark-edge);padding:16px 20px}.fb-input{resize:vertical;background:var(--dark);border:1px solid var(--dark-edge);width:100%;color:var(--cream);font:400 14px/1.5 var(--font-body);border-radius:10px;padding:10px 12px}.fb-input:focus{border-color:var(--terra-glow);outline:none}.fb-compose-row{justify-content:flex-end;align-items:center;gap:12px;margin-top:10px;display:flex}.fb-send{background:var(--terra);color:var(--dark-deep);border-radius:var(--r-pill,999px);font:600 13px/1 var(--font-body);cursor:pointer;border:none;padding:8px 18px}.fb-send:disabled{opacity:.5;cursor:not-allowed}.fb-error{color:var(--terra-glow);font:400 12px/1.3 var(--font-body);margin-right:auto}.fb-list{flex:1;padding:12px 20px 24px;overflow-y:auto}.fb-empty{color:var(--cream-dim);font:400 14px/1.5 var(--font-body);padding:8px 0}.fb-item{border-bottom:1px solid var(--dark-edge);padding:12px 0}.fb-text{color:var(--cream);font:400 14px/1.5 var(--font-body);white-space:pre-wrap;margin:0 0 8px}.fb-actions{gap:14px;display:flex}.fb-link{color:var(--cream-muted);font:500 12px/1 var(--font-body);cursor:pointer;background:0 0;border:none;padding:0}.fb-link:hover{color:var(--cream)}.fb-link:disabled{opacity:.5;cursor:not-allowed}.fb-danger:hover{color:var(--terra-glow)}.fb-fab--active{background:var(--dark-edge);color:var(--cream-dim)}.fb-fab--active:hover{background:var(--dark-edge)}body.fb-pick-mode,body.fb-pick-mode *{cursor:crosshair!important}.fb-pick-hover{outline:2px solid var(--terra-glow)!important;outline-offset:3px!important;background:color-mix(in srgb, var(--terra) 8%, transparent)!important;border-radius:4px!important}.fb-pick-banner{z-index:90;background:var(--dark-raised);border:1px solid var(--terra-glow);border-radius:var(--r-pill,999px);align-items:center;gap:12px;padding:12px 18px;animation:.25s both lwReveal;display:flex;position:fixed;bottom:24px;left:50%;transform:translate(-50%);box-shadow:0 8px 32px #00000080}.fb-pick-hint{font:500 13px/1 var(--font-body);color:var(--cream);white-space:nowrap}.fb-pick-skip{border:1px solid var(--dark-edge);border-radius:var(--r-pill,999px);color:var(--cream-muted);font:500 12px/1 var(--font-body);cursor:pointer;background:0 0;padding:6px 14px}.fb-pick-skip:hover{border-color:var(--terra-glow);color:var(--cream)}.fb-pick-cancel{color:var(--cream-dim);cursor:pointer;background:0 0;border:none;padding:0;font-size:14px;line-height:1}.fb-pick-cancel:hover{color:var(--cream)}.fb-element-chip{background:color-mix(in srgb, var(--terra) 12%, transparent);border:1px solid color-mix(in srgb, var(--terra-glow) 40%, transparent);border-radius:8px;align-items:center;gap:6px;margin-bottom:10px;padding:7px 10px;display:flex}.fb-element-icon{color:var(--terra-glow);flex-shrink:0;font-size:13px}.fb-element-label{font:500 12px/1.3 var(--font-mono);color:var(--cream-muted);word-break:break-word;flex:1}.fb-element-clear{color:var(--cream-dim);cursor:pointer;background:0 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