@import"https://fonts.googleapis.com/css2?family=Google+Sans+Flex:wght@300..700&display=swap";:root{color-scheme:light;font-family:Google Sans Flex,Google Sans,Arial,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:#fbfbfd;color:#1f1f1f;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh;background:#fbfbfd}button,input,select,textarea{font:inherit}button{border:0}a{color:inherit;text-decoration:none}h1,h2,h3,p{margin-top:0}h1{margin-bottom:0;font-size:2.45rem;font-weight:500;letter-spacing:0;line-height:1.08}h2{margin-bottom:10px;font-size:1rem;font-weight:520;letter-spacing:0}p{color:#5f6368;line-height:1.55}.fluento-shell,.lesson-shell{min-height:100vh;background:#fbfbfd}.minimal-header{position:relative;z-index:4;display:flex;width:min(1180px,calc(100% - 32px));min-height:76px;align-items:center;justify-content:space-between;gap:18px;margin:0 auto;padding:14px 0}.brand-mark{flex:0 0 auto;color:#1f1f1f;font-size:1.05rem;font-weight:520}.header-actions,.user-cluster,.auth-controls,.action-row,.submit-row,.dialog-head,.dialog-actions,.course-card-actions{display:flex;align-items:center;gap:10px}.header-actions{justify-content:flex-end}.user-cluster{min-width:0;color:#5f6368;font-size:.92rem}.user-cluster>span{max-width:220px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.auth-status{color:#5f6368;font-size:.92rem}.button{display:inline-flex;min-height:40px;align-items:center;justify-content:center;gap:8px;padding:0 16px;border-radius:999px;cursor:pointer;font-weight:520;letter-spacing:0;transition:transform .16s ease,background-color .16s ease,border-color .16s ease,color .16s ease,opacity .16s ease}.button:hover{transform:translateY(-1px)}.button:disabled{cursor:not-allowed;opacity:.58;transform:none}.button-primary{background:#1a73e8;color:#fff}.button-primary:hover{background:#155fc4}.button-secondary{border:1px solid #dadce0;background:#fff;color:#1f1f1f}.button-secondary:hover{border-color:#c7ccd4;background:#f8fafd}.button-ghost{background:transparent;color:#5f6368}.button-large{min-height:48px;padding:0 22px}.empty-course-state,.course-home{position:relative;display:grid;min-height:calc(100vh - 76px);place-items:center;overflow:hidden;padding:32px 16px 80px}.ambient-gradient{position:absolute;inset:10% 18%;border-radius:50%;background:radial-gradient(ellipse at 50% 50%,rgba(205,232,255,.88),rgba(205,232,255,.16) 48%,transparent 72%),linear-gradient(115deg,#eaf1ff94,#fae7ef6b,#e8f6df73);filter:blur(20px);opacity:.86;transform:translateZ(0);animation:ambient-float 10s ease-in-out infinite alternate}.ambient-gradient.compact{inset:8% 8% auto;height:520px;opacity:.7}@keyframes ambient-float{0%{transform:translate3d(-18px,8px,0) scale(1)}to{transform:translate3d(18px,-10px,0) scale(1.04)}}.empty-course-content{position:relative;z-index:1;display:grid;justify-items:center;gap:28px;text-align:center}.course-card,.course-dialog,.lesson-brief-panel,.handoff-panel,.lesson-focus-panel,.submit-panel{border:1px solid #dadce0;border-radius:8px;background:#ffffffeb;box-shadow:0 14px 42px #3c404314}.course-card{position:relative;z-index:1;display:grid;width:min(720px,100%);gap:28px;padding:28px}.course-card-main{display:grid;gap:10px}.course-card-main p{max-width:560px;margin-bottom:0}.muted-line{color:#5f6368;font-size:.9rem;line-height:1.35}.course-metrics{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;overflow:hidden;border:1px solid #eceff3;border-radius:8px;background:#eceff3}.metric-item{display:grid;min-height:72px;align-content:center;gap:5px;padding:12px;background:#fff}.metric-item span{color:#5f6368;font-size:.82rem}.metric-item strong{color:#1f1f1f;font-size:1.18rem;font-weight:560}.course-card-actions{justify-content:space-between}.modal-backdrop{position:fixed;z-index:10;inset:0;display:grid;place-items:center;overflow-y:auto;padding:24px 16px;background:#f8fafdb8;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.course-dialog{display:grid;width:min(760px,100%);gap:18px;padding:22px}.dialog-head,.dialog-actions{justify-content:space-between}.dialog-head h2{margin-bottom:0;font-size:1.35rem}.form-grid,.skill-grid{display:grid;gap:12px}.two-columns{grid-template-columns:repeat(2,minmax(0,1fr))}.skill-grid{grid-template-columns:repeat(5,minmax(96px,1fr))}.field-control{display:grid;gap:7px}.field-control span{color:#5f6368;font-size:.86rem}.field-control input,.field-control select,.field-control textarea{width:100%;min-height:44px;border:1px solid #dadce0;border-radius:8px;outline:none;background:#fff;color:#1f1f1f;padding:0 12px}.field-control textarea{min-height:92px;padding:12px;resize:vertical;line-height:1.45}.field-control input:focus,.field-control select:focus,.field-control textarea:focus{border-color:#1a73e8;box-shadow:0 0 0 3px #1a73e824}.compact-field select{min-height:40px}.lesson-shell{padding-bottom:56px}.lesson-top{align-items:center}.lesson-title-block{display:grid;min-width:0;flex:1;gap:4px}.lesson-title-block h1{overflow-wrap:anywhere}.score-badge{display:grid;width:54px;height:44px;flex:0 0 auto;place-items:center;border-radius:8px;background:#fbbc04;color:#1f1f1f;font-weight:620}.lesson-grid{display:grid;width:min(1180px,calc(100% - 32px));grid-template-columns:minmax(250px,330px) minmax(0,1fr);gap:16px;margin:0 auto}.lesson-brief-panel,.handoff-panel,.lesson-focus-panel,.submit-panel{padding:18px}.lesson-brief-panel{display:grid;align-content:start}.lesson-brief-panel p{margin-bottom:18px}.lesson-meta{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px}.lesson-meta span{border:1px solid #dadce0;border-radius:999px;padding:6px 10px;color:#5f6368;font-size:.84rem}.profile-summary,.chunk-list{display:flex;flex-wrap:wrap;gap:7px}.profile-summary{margin-bottom:18px}.profile-summary span,.chunk-list span{border:1px solid #e2e5ea;border-radius:999px;background:#fff;color:#3c4043;font-size:.84rem;line-height:1.25;padding:7px 10px}.lesson-workspace{display:grid;gap:16px}.handoff-panel{display:flex;align-items:center;justify-content:space-between;gap:14px}.handoff-panel h2,.lesson-focus-panel h2,.submit-panel h2{margin-bottom:4px}.lesson-focus-panel{display:grid;gap:20px}.sentence-list{display:grid;gap:8px;margin:0;padding-left:20px;color:#3c4043;line-height:1.5}.report-box{min-height:220px}.submit-row{justify-content:space-between;margin-top:12px}.status-message{min-height:24px;margin:0;color:#5f6368}.status-error{color:#b3261e}.status-saved{color:#137333}@media(max-width:900px){h1{font-size:2rem}.minimal-header,.header-actions,.course-card-actions,.handoff-panel,.submit-row{align-items:stretch;flex-direction:column}.minimal-header{gap:12px}.header-actions,.auth-controls,.action-row{width:100%}.user-cluster{justify-content:space-between}.button{width:100%}.course-metrics,.two-columns,.skill-grid,.lesson-grid{grid-template-columns:1fr}.empty-course-state,.course-home{min-height:auto;padding-top:80px}.ambient-gradient{inset:18% -12%}}
