:root{color-scheme:light;--cream: #FAF9F5;--cream-dim: #F4F2EC;--sand: #ECE8DF;--line: #E3DECF;--line-strong: #D6CFBC;--border-ui: #85806F;--ink: #21201C;--ink-soft: #5C574B;--ink-faint: #68624F;--white: #FFFFFF;--accent: #B0502F;--on-accent: #FFFFFF;--accent-strong: #8F3F23;--accent-text: #8F3F23;--focus: #8F3F23;--danger: #B03A1E;--on-danger: #FFFFFF;--rust: var(--accent);--rust-deep: var(--accent-strong);--success-bg: #E7F0EA;--success-text: #245038;--success-border: #A9CDB8;--success-ui: #2F7A55;--error-bg: #F7E9E2;--error-text: #7A2E16;--error-border: #E0B3A1;--error-ui: #B03A1E;--warning-bg: #FAEEDA;--warning-text: #6B4C12;--warning-border: #E2C58B;--warning-ui: #9A6A10;--font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;--font-serif: Georgia, "Iowan Old Style", "Palatino Linotype", "Times New Roman", serif;--font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;--fs-xs: .75rem;--fs-sm: .875rem;--fs-md: 1rem;--fs-lg: 1.25rem;--fs-xl: 1.75rem;--lh-tight: 1.25;--lh-body: 1.6;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 24px;--space-6: 32px;--space-7: 48px;--space-8: 64px;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-pill: 999px;--shadow-sm: 0 1px 2px rgba(33, 32, 28, .06), 0 2px 8px rgba(33, 32, 28, .05);--shadow-lg: 0 24px 48px -24px rgba(33, 32, 28, .4), 0 8px 24px -16px rgba(33, 32, 28, .25);--tap: 44px;--header-h: 56px;--bottomnav-h: 60px;--color-background-primary: var(--cream);--color-background-secondary: var(--cream-dim);--color-background-tertiary: var(--sand);--color-text-primary: var(--ink);--color-text-secondary: var(--ink-soft);--color-border-secondary: var(--line-strong);--color-border-tertiary: var(--line)}:root[data-theme=dark]{color-scheme:dark;--cream: #1E1C18;--cream-dim: #262320;--sand: #332E27;--line: #3D372E;--line-strong: #4A4338;--border-ui: #8A8272;--ink: #F2EFE9;--ink-soft: #B8B0A0;--ink-faint: #A39B8B;--accent: #E0875A;--on-accent: #1E1C18;--accent-strong: #CF7449;--accent-text: #E0875A;--focus: #F2B08A;--danger: #E8806A;--on-danger: #1E1C18;--success-bg: #1E3328;--success-text: #8FCBA8;--success-border: #3D7A5C;--success-ui: #5FB88A;--error-bg: #3A2118;--error-text: #F0B49C;--error-border: #8C4A33;--error-ui: #E8806A;--warning-bg: #332A14;--warning-text: #E8C77F;--warning-border: #7A5A1E;--warning-ui: #D9A441;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .4), 0 2px 8px rgba(0, 0, 0, .3);--shadow-lg: 0 24px 48px -24px rgba(0, 0, 0, .7), 0 8px 24px -16px rgba(0, 0, 0, .5)}@media (min-width: 768px){:root{--header-h: 60px}}*,*:before,*:after{box-sizing:border-box}*{margin:0;padding:0}html{-webkit-text-size-adjust:100%;text-size-adjust:100%}html,body,#root{min-height:100%}body{font-family:var(--font-sans);font-size:var(--fs-md);line-height:var(--lh-body);background:var(--cream);color:var(--ink);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;padding-left:env(safe-area-inset-left);padding-right:env(safe-area-inset-right)}#root{min-height:100vh;min-height:100dvh;display:flex;flex-direction:column}img,svg,video{max-width:100%}button,input,select,textarea{font:inherit;color:inherit}button{cursor:pointer;background:none;border:none}button:disabled{cursor:default}a{color:var(--accent-text)}h1,h2,h3,h4{line-height:var(--lh-tight)}ul,ol{padding-left:var(--space-5)}::selection{background:var(--accent);color:var(--on-accent)}:focus-visible{outline:3px solid var(--focus);outline-offset:2px;border-radius:4px}:focus:not(:focus-visible){outline:none}::-webkit-scrollbar{width:9px;height:9px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--line-strong);border-radius:20px}@keyframes eduia-blink{0%,to{opacity:1}50%{opacity:0}}@keyframes eduia-bounce{0%,to{transform:translateY(0)}50%{transform:translateY(-4px)}}@keyframes eduia-fade-up{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}@keyframes eduia-spin{to{transform:rotate(360deg)}}@keyframes eduia-shimmer{0%{background-position:100% 0}to{background-position:-100% 0}}@keyframes eduia-pulse{0%,to{box-shadow:0 0 color-mix(in srgb,var(--danger) 50%,transparent)}50%{box-shadow:0 0 0 6px transparent}}.eduia-fade-up{animation:eduia-fade-up .25s ease both}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}}@media (prefers-reduced-motion: no-preference){html{scroll-behavior:smooth}}@media print{body *{visibility:hidden}.eduia-print-area,.eduia-print-area *{visibility:visible}.eduia-print-area{position:absolute;top:0;left:0;width:100%;padding:20px}.eduia-no-print{display:none!important}}[hidden]{display:none!important}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.skip-link{position:absolute;left:8px;top:-60px;z-index:1000;background:var(--accent);color:var(--on-accent);padding:10px 16px;border-radius:var(--radius-sm);text-decoration:none;font-weight:600}.skip-link:focus{top:8px}.ui-btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);min-height:var(--tap);padding:0 var(--space-4);border-radius:var(--radius-pill);border:1px solid transparent;font-weight:600;font-size:var(--fs-sm);line-height:1.2;transition:filter .15s ease,background-color .15s ease;text-align:center}.ui-btn--sm{min-height:36px;padding:0 var(--space-3);font-size:var(--fs-sm)}.ui-btn--lg{min-height:52px;padding:0 var(--space-5);font-size:var(--fs-md)}.ui-btn--full{width:100%}.ui-btn--primary{background:var(--accent);color:var(--on-accent)}.ui-btn--primary:hover:not(:disabled){filter:brightness(1.08)}.ui-btn--secondary{background:var(--cream-dim);color:var(--ink);border-color:var(--border-ui)}.ui-btn--secondary:hover:not(:disabled){background:var(--sand)}.ui-btn--ghost{background:transparent;color:var(--ink-soft)}.ui-btn--ghost:hover:not(:disabled){background:var(--cream-dim);color:var(--ink)}.ui-btn--danger{background:var(--danger);color:var(--on-danger)}.ui-btn:disabled{opacity:.55}.ui-iconbtn{display:inline-flex;align-items:center;justify-content:center;width:var(--tap);height:var(--tap);border-radius:50%;border:1px solid var(--border-ui);background:transparent;color:var(--ink-soft);flex-shrink:0;font-size:1.1rem}.ui-iconbtn:hover:not(:disabled){background:var(--cream-dim)}.ui-iconbtn.is-active{background:var(--accent);color:var(--on-accent);border-color:var(--accent)}.ui-iconbtn.is-recording{background:var(--danger);color:var(--on-danger);border-color:var(--danger);animation:eduia-pulse 1.4s infinite}.ui-iconbtn--sm{width:32px;height:32px;font-size:.9rem}.seg{display:inline-flex;background:var(--cream-dim);border:1px solid var(--line-strong);border-radius:var(--radius-pill);padding:2px}.seg--wide{display:flex;margin:var(--space-4) 0}.seg--wide .seg__btn{flex:1}.seg__btn{min-height:40px;min-width:44px;padding:0 var(--space-3);border-radius:var(--radius-pill);font-size:var(--fs-sm);font-weight:600;color:var(--ink-soft)}.seg__btn.is-active{background:var(--accent);color:var(--on-accent)}.ui-card{background:var(--cream-dim);border:1px solid var(--line);border-radius:var(--radius-md);padding:var(--space-4);margin-bottom:var(--space-4);display:flex;flex-direction:column;gap:var(--space-3)}.ui-card__title{font-size:var(--fs-md);font-weight:600}.ui-field{display:flex;flex-direction:column;gap:var(--space-1);min-width:0}.ui-field__label{font-size:var(--fs-sm);color:var(--ink-soft);font-weight:500}.ui-field__hint{font-size:var(--fs-xs);color:var(--ink-soft)}.ui-field__error{font-size:var(--fs-sm);color:var(--error-text);font-weight:500}.ui-input{width:100%;min-height:var(--tap);padding:10px 14px;border-radius:var(--radius-sm);border:1px solid var(--border-ui);background:var(--cream);color:var(--ink);font-size:1rem}.ui-input[aria-invalid=true]{border-color:var(--error-ui);border-width:2px}.ui-textarea{resize:vertical;min-height:96px}.ui-choice{border:none;display:flex;flex-direction:column;gap:var(--space-1);min-width:0;margin-bottom:var(--space-4)}.ui-choice__legend{font-size:var(--fs-xs);text-transform:uppercase;letter-spacing:.07em;color:var(--ink-soft);font-weight:700;margin-bottom:var(--space-2)}.ui-choice__item{position:relative;display:flex;align-items:center;gap:var(--space-2);min-height:var(--tap);padding:6px 12px;border-radius:var(--radius-sm);border:1px solid var(--line-strong);cursor:pointer;font-size:var(--fs-sm);background:transparent}.ui-choice__item.is-selected{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 10%,transparent);font-weight:600}.ui-choice__input{position:absolute;opacity:0;inset:0;width:100%;height:100%;cursor:pointer;margin:0}.ui-choice__item:has(:focus-visible){outline:3px solid var(--focus);outline-offset:2px}.ui-choice__dot{width:16px;height:16px;border-radius:50%;border:2px solid var(--border-ui);flex-shrink:0}.ui-choice__label{flex:1}.ui-choice__sub{font-size:var(--fs-xs);color:var(--ink-soft)}.ui-alert{display:flex;gap:var(--space-2);align-items:flex-start;padding:var(--space-3);border-radius:var(--radius-sm);font-size:var(--fs-sm);border:1px solid}.ui-alert__body{flex:1;min-width:0}.ui-alert__body p{margin-top:4px}.ui-alert__retry{font-weight:700;text-decoration:underline;color:inherit;min-height:32px;padding:0 8px}.ui-alert--error{background:var(--error-bg);color:var(--error-text);border-color:var(--error-border)}.ui-alert--success{background:var(--success-bg);color:var(--success-text);border-color:var(--success-border)}.ui-alert--warning,.ui-alert--info{background:var(--warning-bg);color:var(--warning-text);border-color:var(--warning-border)}.ui-spinner{width:20px;height:20px;border-radius:50%;border:3px solid var(--line-strong);border-top-color:var(--accent);animation:eduia-spin .8s linear infinite;display:inline-block}.ui-spinner--inline{width:16px;height:16px;border-width:2px;border-color:currentColor;border-top-color:transparent;opacity:.8}.ui-loading,.loading-block{display:flex;align-items:center;justify-content:center;gap:var(--space-3);padding:var(--space-6);color:var(--ink-soft);font-size:var(--fs-sm)}.ui-skeleton{display:flex;flex-direction:column;gap:var(--space-3);padding:var(--space-3) 0}.ui-skeleton__line{display:block;height:14px;border-radius:7px;background:linear-gradient(90deg,var(--sand) 25%,var(--cream-dim) 50%,var(--sand) 75%);background-size:200% 100%;animation:eduia-shimmer 1.4s linear infinite}.ui-empty{text-align:center;padding:var(--space-6) var(--space-4);display:flex;flex-direction:column;align-items:center;gap:var(--space-2)}.ui-empty__icon{font-size:2.2rem}.ui-empty__title{font-size:var(--fs-md);font-weight:600}.ui-empty__text{color:var(--ink-soft);font-size:var(--fs-sm);max-width:420px}.ui-progress{height:8px;background:var(--sand);border-radius:4px;overflow:hidden}.ui-progress__bar{height:100%;background:var(--accent);border-radius:4px;transition:width .4s ease}.ui-chip{display:inline-flex;align-items:center;gap:4px;font-size:var(--fs-xs);padding:2px 10px;border-radius:var(--radius-pill);background:var(--sand);color:var(--ink-soft);border:1px solid var(--line-strong)}.tone-good{background:var(--success-bg);color:var(--success-text);border-color:var(--success-border)}.tone-ok{background:var(--warning-bg);color:var(--warning-text);border-color:var(--warning-border)}.tone-low{background:var(--error-bg);color:var(--error-text);border-color:var(--error-border)}.ui-pageheader{display:flex;flex-wrap:wrap;align-items:flex-start;justify-content:space-between;gap:var(--space-3);margin-bottom:var(--space-4)}.ui-pageheader__title{font-family:var(--font-serif);font-size:var(--fs-lg);font-weight:600}.ui-pageheader__sub{font-size:var(--fs-sm);color:var(--ink-soft);margin-top:2px}.ui-pageheader__actions{display:flex;gap:var(--space-2);flex-wrap:wrap}.ui-drawer-root{position:fixed;inset:0;z-index:300}.ui-drawer-backdrop{position:absolute;inset:0;background:#00000080}.ui-drawer{position:absolute;background:var(--cream);display:flex;flex-direction:column;box-shadow:var(--shadow-lg);outline:none}.ui-drawer--left{top:0;bottom:0;left:0;width:min(88vw,340px);padding-top:env(safe-area-inset-top)}.ui-drawer--bottom{left:0;right:0;bottom:0;max-height:88dvh;border-radius:var(--radius-lg) var(--radius-lg) 0 0;padding-bottom:env(safe-area-inset-bottom)}.ui-drawer__head{display:flex;align-items:center;justify-content:space-between;padding:var(--space-3) var(--space-4);border-bottom:1px solid var(--line)}.ui-drawer__title{font-size:var(--fs-md);font-weight:600}.ui-drawer__body{overflow-y:auto;padding:var(--space-4);display:flex;flex-direction:column;gap:var(--space-3)}.app{min-height:100dvh;display:flex;flex-direction:column}.app-header{position:sticky;top:0;z-index:100;min-height:var(--header-h);display:flex;align-items:center;gap:var(--space-3);padding:0 var(--space-3);padding-top:env(safe-area-inset-top);background:var(--cream);border-bottom:1px solid var(--line)}.app-brand{display:flex;align-items:center;gap:var(--space-2);min-height:var(--tap)}.app-brand__name{font-weight:700;font-size:var(--fs-md)}.brand-mark{display:inline-flex;align-items:center;justify-content:center;border-radius:22%;background:var(--accent);flex-shrink:0}.app-nav{display:none}.app-header__actions{margin-left:auto;display:flex;align-items:center;gap:var(--space-2)}.app-settings,.app-logout{display:none}.app-main{flex:1;min-width:0;padding-bottom:calc(var(--bottomnav-h) + env(safe-area-inset-bottom));outline:none}.bottom-nav{position:fixed;left:0;right:0;bottom:0;z-index:100;display:flex;background:var(--cream);border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom)}.bottom-nav__item{flex:1;min-height:var(--bottomnav-h);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;color:var(--ink-soft);font-size:var(--fs-xs);font-weight:500}.bottom-nav__item.is-active{color:var(--accent-text);font-weight:700;box-shadow:inset 0 3px 0 var(--accent)}.bottom-nav__icon{font-size:1.25rem;line-height:1}.more-list{list-style:none;padding:0;display:flex;flex-direction:column;gap:var(--space-1)}.more-list__item{width:100%;text-align:left;min-height:var(--tap);padding:0 var(--space-3);border-radius:var(--radius-sm);font-size:var(--fs-md);display:flex;align-items:center;gap:var(--space-3)}.more-list__item.is-active{background:var(--accent);color:var(--on-accent)}.more-tools{display:flex;align-items:center;justify-content:space-between}@media (min-width: 1024px){.app-header{padding:0 var(--space-5)}.app-nav{display:flex;gap:2px;margin-left:var(--space-4);overflow-x:auto}.app-nav__link{min-height:40px;padding:0 var(--space-3);border-radius:var(--radius-pill);font-size:var(--fs-sm);color:var(--ink-soft);white-space:nowrap;font-weight:500}.app-nav__link:hover{background:var(--cream-dim);color:var(--ink)}.app-nav__link.is-active{background:var(--accent);color:var(--on-accent);font-weight:600}.app-settings,.app-logout{display:inline-flex}.bottom-nav{display:none}.app-main{padding-bottom:0}}.page{max-width:960px;margin:0 auto;padding:var(--space-4) var(--space-4) var(--space-6)}.page--narrow{max-width:760px}@media (min-width: 768px){.page{padding:var(--space-5) var(--space-5) var(--space-7)}.ui-card{padding:var(--space-5)}}.stack{list-style:none;padding:0;display:flex;flex-direction:column;gap:var(--space-3)}ol.stack{list-style:decimal;padding-left:var(--space-5)}.muted{color:var(--ink-soft);font-size:var(--fs-sm)}.chips{display:flex;flex-wrap:wrap;gap:var(--space-2);margin:0}.chips-group{display:flex;flex-wrap:wrap;gap:var(--space-2);border:none;margin-bottom:var(--space-3)}.chips-group .ui-choice__legend{width:100%}.chip-btn{min-height:var(--tap);padding:0 var(--space-3);border-radius:var(--radius-pill);border:1px solid var(--border-ui);background:var(--cream);font-size:var(--fs-sm);text-align:left}.chip-btn.is-on{background:color-mix(in srgb,var(--accent) 14%,var(--cream));border-color:var(--accent);font-weight:600}.actions{display:flex;flex-wrap:wrap;gap:var(--space-2);margin-top:var(--space-2)}.picker{display:grid;gap:var(--space-3);grid-template-columns:1fr}@media (min-width: 640px){.picker{grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}}.inline-form{display:flex;gap:var(--space-2);align-items:flex-end;flex-wrap:wrap}.inline-form .ui-field{flex:1 1 160px}.check{display:flex;gap:var(--space-3);align-items:flex-start;font-size:var(--fs-sm);min-height:var(--tap)}.check input{width:22px;height:22px;margin-top:2px;accent-color:var(--accent)}.dl{display:flex;flex-direction:column;gap:var(--space-2)}.dl>div{display:flex;justify-content:space-between;gap:var(--space-3);font-size:var(--fs-sm);flex-wrap:wrap}.dl dt{color:var(--ink-soft)}.dl dd{font-weight:500;word-break:break-all}.danger-zone{border-color:var(--error-border)}.sub{font-size:var(--fs-sm);font-weight:700;color:var(--ink-soft);margin:var(--space-2) 0}.sub--good{color:var(--success-text)}.sub--bad{color:var(--error-text)}.rubric__row{display:flex;justify-content:space-between;gap:var(--space-3);align-items:center;flex-wrap:wrap}.rubric summary{cursor:pointer;font-weight:600;min-height:var(--tap);display:flex;align-items:center}.grid-2{display:grid;gap:var(--space-4);grid-template-columns:1fr}@media (min-width: 768px){.grid-2{grid-template-columns:1fr 1fr}.grid-2>.ui-card{margin-bottom:0}}.cards-grid{list-style:none;padding:0;display:grid;gap:var(--space-3);grid-template-columns:repeat(auto-fill,minmax(220px,1fr))}.class-card{width:100%;height:100%;text-align:left;display:flex;flex-direction:column;gap:var(--space-1);padding:var(--space-4);border-radius:var(--radius-md);background:var(--cream-dim);border:1px solid var(--line)}.class-card:hover{border-color:var(--border-ui)}.class-card__icon{font-size:1.6rem}.class-card__foot{display:flex;justify-content:space-between;align-items:center;margin-top:var(--space-2);font-size:var(--fs-sm)}.class-card code,.invite-code{font-family:var(--font-mono);background:var(--sand);padding:2px 8px;border-radius:6px}.invite-code{display:inline-block;font-size:var(--fs-lg);font-weight:800;letter-spacing:.2em;padding:8px 20px}.fullscreen-msg{min-height:100dvh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--space-4);padding:var(--space-5);text-align:center}.tiles{display:grid;gap:var(--space-3);grid-template-columns:repeat(3,1fr);margin-bottom:var(--space-4)}.tiles--4{grid-template-columns:repeat(2,1fr)}@media (min-width: 768px){.tiles--4{grid-template-columns:repeat(4,1fr)}}@media (max-width: 479px){.tiles:not(.tiles--4){grid-template-columns:repeat(2,1fr)}}.tile{background:var(--cream-dim);border:1px solid var(--line);border-radius:var(--radius-md);padding:var(--space-4) var(--space-2);text-align:center;display:flex;flex-direction:column;gap:4px;align-items:center}.tile strong{font-size:var(--fs-xl);line-height:1.1;color:var(--accent-text)}.tile>span:last-child{font-size:var(--fs-xs);color:var(--ink-soft)}.tile--sm strong{font-size:var(--fs-md)}.bars{list-style:none;padding:0}.bar{display:flex;align-items:center;gap:var(--space-2);margin-bottom:var(--space-2);font-size:var(--fs-sm)}.bar__label{width:120px;flex-shrink:0;color:var(--ink-soft)}.bar__track{flex:1;height:16px;background:var(--sand);border-radius:5px;overflow:hidden}.bar__fill{display:block;height:100%;border-radius:5px}.bar__value{width:36px;text-align:right}.spark{display:flex;align-items:flex-end;gap:2px;height:90px}.spark__bar{flex:1;background:var(--accent);border-radius:2px 2px 0 0}.heatmap{display:grid;grid-template-columns:repeat(7,1fr);gap:4px;margin-bottom:var(--space-2)}.heatmap__cell{aspect-ratio:1;border-radius:3px;display:inline-block}.heatmap__legend{display:flex;align-items:center;gap:4px}.heatmap__legend .heatmap__cell{width:12px;height:12px;aspect-ratio:auto}.heat-0{background:var(--sand);border:1px solid var(--line-strong)}.heat-1{background:color-mix(in srgb,var(--accent) 35%,var(--cream))}.heat-2{background:color-mix(in srgb,var(--accent) 70%,var(--cream))}.heat-3{background:var(--accent-strong)}.badges{list-style:none;padding:0;display:flex;flex-direction:column;gap:var(--space-3)}.badges--grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(96px,1fr));gap:var(--space-2)}.badge{display:flex;gap:var(--space-3);align-items:center}.badge__icon{font-size:1.6rem}.badge--tile{flex-direction:column;text-align:center;padding:var(--space-3) var(--space-1);border:1px dashed var(--line-strong);border-radius:var(--radius-sm);font-size:var(--fs-xs);gap:2px;opacity:.75}.badge--tile.is-earned{border-style:solid;border-color:var(--accent);background:var(--cream);opacity:1}.rec{display:flex;justify-content:space-between;gap:var(--space-3);align-items:center}.rec--btn{width:100%;text-align:left;padding:var(--space-3);border:1px solid 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