/*! tailwindcss v4.3.1 | MIT License | https://tailwindcss.com */
@layer properties{@supports (((-webkit-hyphens:none)) and (not (margin-trim:inline))) or ((-moz-orient:inline) and (not (color:rgb(from red r g b)))){*,:before,:after,::backdrop{--tw-space-y-reverse:0;--tw-border-style:solid;--tw-font-weight:initial;--tw-tracking:initial;--tw-outline-style:solid}}}@layer theme{:root,:host{--font-sans:ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--spacing:.25rem;--container-xs:20rem;--container-md:28rem;--text-xs:.75rem;--text-xs--line-height:calc(1 / .75);--text-sm:.875rem;--text-sm--line-height:calc(1.25 / .875);--text-lg:1.125rem;--text-lg--line-height:calc(1.75 / 1.125);--text-xl:1.25rem;--text-xl--line-height:calc(1.75 / 1.25);--text-2xl:1.5rem;--text-2xl--line-height:calc(2 / 1.5);--text-3xl:1.875rem;--text-3xl--line-height:calc(2.25 / 1.875);--font-weight-medium:500;--font-weight-semibold:600;--tracking-tight:-.025em;--shadow-sm:0 1px 3px 0 #0000001a, 0 1px 2px -1px #0000001a;--shadow-md:0 4px 6px -1px #0000001a, 0 2px 4px -2px #0000001a;--shadow-lg:0 10px 15px -3px #0000001a, 0 4px 6px -4px #0000001a;--animate-spin:spin 1s linear infinite;--animate-pulse:pulse 2s cubic-bezier(.4, 0, .6, 1) infinite;--default-transition-duration:.15s;--default-transition-timing-function:cubic-bezier(.4, 0, .2, 1);--default-font-family:var(--font-sans);--default-mono-font-family:var(--font-mono)}}@layer base{*,:after,:before,::backdrop{box-sizing:border-box;border:0 solid;margin:0;padding:0}::file-selector-button{box-sizing:border-box;border:0 solid;margin:0;padding:0}html,:host{-webkit-text-size-adjust:100%;tab-size:4;line-height:1.5;font-family:var(--default-font-family,ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji");font-feature-settings:var(--default-font-feature-settings,normal);font-variation-settings:var(--default-font-variation-settings,normal);-webkit-tap-highlight-color:transparent}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,samp,pre{font-family:var(--default-mono-font-family,ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace);font-feature-settings:var(--default-mono-font-feature-settings,normal);font-variation-settings:var(--default-mono-font-variation-settings,normal);font-size:1em}small{font-size:80%}sub,sup{vertical-align:baseline;font-size:75%;line-height:0;position:relative}sub{bottom:-.25em}sup{top:-.5em}table{text-indent:0;border-color:inherit;border-collapse:collapse}:-moz-focusring{outline:auto}progress{vertical-align:baseline}summary{display:list-item}ol,ul,menu{list-style:none}img,svg,video,canvas,audio,iframe,embed,object{vertical-align:middle;display:block}img,video{max-width:100%;height:auto}button,input,select,optgroup,textarea{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}::file-selector-button{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}:where(select:is([multiple],[size])) optgroup{font-weight:bolder}:where(select:is([multiple],[size])) optgroup option{padding-inline-start:20px}::file-selector-button{margin-inline-end:4px}::placeholder{opacity:1}@supports (not ((-webkit-appearance:-apple-pay-button))) or (contain-intrinsic-size:1px){::placeholder{color:currentColor}@supports (color:color-mix(in lab, red, red)){::placeholder{color:color-mix(in oklab, currentcolor 50%, transparent)}}}textarea{resize:vertical}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-date-and-time-value{min-height:1lh;text-align:inherit}::-webkit-datetime-edit{display:inline-flex}::-webkit-datetime-edit-fields-wrapper{padding:0}::-webkit-datetime-edit{padding-block:0}::-webkit-datetime-edit-year-field{padding-block:0}::-webkit-datetime-edit-month-field{padding-block:0}::-webkit-datetime-edit-day-field{padding-block:0}::-webkit-datetime-edit-hour-field{padding-block:0}::-webkit-datetime-edit-minute-field{padding-block:0}::-webkit-datetime-edit-second-field{padding-block:0}::-webkit-datetime-edit-millisecond-field{padding-block:0}::-webkit-datetime-edit-meridiem-field{padding-block:0}::-webkit-calendar-picker-indicator{line-height:1}:-moz-ui-invalid{box-shadow:none}button,input:where([type=button],[type=reset],[type=submit]){appearance:button}::file-selector-button{appearance:button}::-webkit-inner-spin-button{height:auto}::-webkit-outer-spin-button{height:auto}[hidden]:where(:not([hidden=until-found])){display:none!important}}@layer components;@layer utilities{.visible{visibility:visible}.sr-only{clip-path:inset(50%);white-space:nowrap;border-width:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.absolute{position:absolute}.relative{position:relative}.static{position:static}.my-4{margin-block:calc(var(--spacing) * 4)}.my-5{margin-block:calc(var(--spacing) * 5)}.my-8{margin-block:calc(var(--spacing) * 8)}.mt-2{margin-top:calc(var(--spacing) * 2)}.mt-3{margin-top:calc(var(--spacing) * 3)}.mt-4{margin-top:calc(var(--spacing) * 4)}.mt-5{margin-top:calc(var(--spacing) * 5)}.mt-6{margin-top:calc(var(--spacing) * 6)}.mt-8{margin-top:calc(var(--spacing) * 8)}.mt-10{margin-top:calc(var(--spacing) * 10)}.mb-3{margin-bottom:calc(var(--spacing) * 3)}.mb-4{margin-bottom:calc(var(--spacing) * 4)}.mb-5{margin-bottom:calc(var(--spacing) * 5)}.mb-6{margin-bottom:calc(var(--spacing) * 6)}.line-clamp-1{-webkit-line-clamp:1;-webkit-box-orient:vertical;display:-webkit-box;overflow:hidden}.line-clamp-2{-webkit-line-clamp:2;-webkit-box-orient:vertical;display:-webkit-box;overflow:hidden}.block{display:block}.flex{display:flex}.grid{display:grid}.hidden{display:none}.inline{display:inline}.h-4{height:calc(var(--spacing) * 4)}.min-h-72{min-height:calc(var(--spacing) * 72)}.w-1\/2{width:50%}.w-3\/4{width:75%}.w-full{width:100%}.max-w-md{max-width:var(--container-md)}.max-w-xs{max-width:var(--container-xs)}.flex-1{flex:1}.shrink-0{flex-shrink:0}.animate-pulse{animation:var(--animate-pulse)}.animate-spin{animation:var(--animate-spin)}.grid-cols-1{grid-template-columns:repeat(1,minmax(0,1fr))}.grid-cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.flex-col{flex-direction:column}.flex-wrap{flex-wrap:wrap}.items-center{align-items:center}.items-start{align-items:flex-start}.justify-between{justify-content:space-between}.justify-center{justify-content:center}.justify-end{justify-content:flex-end}.gap-1{gap:var(--spacing)}.gap-2{gap:calc(var(--spacing) * 2)}.gap-3{gap:calc(var(--spacing) * 3)}.gap-4{gap:calc(var(--spacing) * 4)}.gap-6{gap:calc(var(--spacing) * 6)}:where(.space-y-3>:not(:last-child)){--tw-space-y-reverse:0;margin-block-start:calc(calc(var(--spacing) * 3) * var(--tw-space-y-reverse));margin-block-end:calc(calc(var(--spacing) * 3) * calc(1 - var(--tw-space-y-reverse)))}:where(.space-y-4>:not(:last-child)){--tw-space-y-reverse:0;margin-block-start:calc(calc(var(--spacing) * 4) * var(--tw-space-y-reverse));margin-block-end:calc(calc(var(--spacing) * 4) * calc(1 - var(--tw-space-y-reverse)))}:where(.space-y-5>:not(:last-child)){--tw-space-y-reverse:0;margin-block-start:calc(calc(var(--spacing) * 5) * var(--tw-space-y-reverse));margin-block-end:calc(calc(var(--spacing) * 5) * calc(1 - var(--tw-space-y-reverse)))}.rounded{border-radius:.25rem}.border{border-style:var(--tw-border-style);border-width:1px}.border-t{border-top-style:var(--tw-border-style);border-top-width:1px}.border-border{border-color:hsl(var(--border))}.bg-muted{background-color:hsl(var(--muted))}.p-4{padding:calc(var(--spacing) * 4)}.p-5{padding:calc(var(--spacing) * 5)}.p-6{padding:calc(var(--spacing) * 6)}.pt-4{padding-top:calc(var(--spacing) * 4)}.pt-6{padding-top:calc(var(--spacing) * 6)}.pr-8{padding-right:calc(var(--spacing) * 8)}.text-left{text-align:left}.text-2xl{font-size:var(--text-2xl);line-height:var(--tw-leading,var(--text-2xl--line-height))}.text-3xl{font-size:var(--text-3xl);line-height:var(--tw-leading,var(--text-3xl--line-height))}.text-lg{font-size:var(--text-lg);line-height:var(--tw-leading,var(--text-lg--line-height))}.text-sm{font-size:var(--text-sm);line-height:var(--tw-leading,var(--text-sm--line-height))}.text-xl{font-size:var(--text-xl);line-height:var(--tw-leading,var(--text-xl--line-height))}.text-xs{font-size:var(--text-xs);line-height:var(--tw-leading,var(--text-xs--line-height))}.font-medium{--tw-font-weight:var(--font-weight-medium);font-weight:var(--font-weight-medium)}.font-semibold{--tw-font-weight:var(--font-weight-semibold);font-weight:var(--font-weight-semibold)}.tracking-tight{--tw-tracking:var(--tracking-tight);letter-spacing:var(--tracking-tight)}.break-words{overflow-wrap:break-word}.break-all{word-break:break-all}.whitespace-pre-wrap{white-space:pre-wrap}.text-destructive{color:hsl(var(--destructive))}.text-muted-foreground{color:hsl(var(--muted-foreground))}.text-primary{color:hsl(var(--primary))}.text-success{color:hsl(var(--success))}.outline{outline-style:var(--tw-outline-style);outline-width:1px}.transition{transition-property:color,background-color,border-color,outline-color,text-decoration-color,fill,stroke,--tw-gradient-from,--tw-gradient-via,--tw-gradient-to,opacity,box-shadow,transform,translate,scale,rotate,filter,-webkit-backdrop-filter,backdrop-filter,display,content-visibility,overlay,pointer-events;transition-timing-function:var(--tw-ease,var(--default-transition-timing-function));transition-duration:var(--tw-duration,var(--default-transition-duration))}@media (width>=40rem){.sm\:inline{display:inline}.sm\:grid-cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}.sm\:flex-row{flex-direction:row}.sm\:p-8{padding:calc(var(--spacing) * 8)}.sm\:text-2xl{font-size:var(--text-2xl);line-height:var(--tw-leading,var(--text-2xl--line-height))}}@media (width>=48rem){.md\:grid-cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (width>=80rem){.xl\:grid-cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}}}:root{--background:240 25% 98%;--foreground:241 27% 15%;--card:0 0% 100%;--card-foreground:241 27% 15%;--popover:0 0% 100%;--popover-foreground:241 27% 15%;--primary:258 76% 54%;--primary-foreground:0 0% 100%;--secondary:247 35% 94%;--secondary-foreground:245 30% 24%;--muted:245 24% 94%;--muted-foreground:244 13% 43%;--accent:253 70% 95%;--accent-foreground:258 65% 42%;--destructive:0 70% 45%;--destructive-foreground:0 0% 100%;--success:159 64% 30%;--success-foreground:0 0% 100%;--warning:39 80% 36%;--warning-foreground:0 0% 100%;--info:217 76% 49%;--info-foreground:0 0% 100%;--border:246 25% 88%;--input:245 23% 82%;--ring:259 80% 63%;--sidebar:246 30% 96%;--sidebar-foreground:241 27% 15%;--gradient-start:269 90% 64%;--gradient-end:214 94% 65%;--radius:.875rem;--shadow-sm:0 2px 8px hsl(var(--foreground) / .025);--shadow-md:0 6px 24px hsl(var(--foreground) / .08);--shadow-lg:0 16px 64px hsl(var(--foreground) / .16);--shadow-elegant:0 4px 28px hsl(var(--primary) / .22);--transition-fast:.15s cubic-bezier(.4, 0, .2, 1);--transition:.2s cubic-bezier(.4, 0, .2, 1);--transition-smooth:.35s cubic-bezier(.4, 0, .2, 1)}.dark{--background:240 22% 7%;--foreground:240 20% 96%;--card:240 18% 10%;--card-foreground:240 20% 96%;--popover:240 18% 13%;--popover-foreground:240 20% 96%;--primary:258 89% 70%;--primary-foreground:249 40% 10%;--secondary:245 20% 15%;--secondary-foreground:240 18% 90%;--muted:241 19% 14%;--muted-foreground:243 12% 63%;--accent:255 37% 19%;--accent-foreground:259 95% 80%;--destructive:0 76% 68%;--destructive-foreground:0 30% 10%;--success:160 57% 61%;--success-foreground:159 45% 10%;--warning:40 80% 68%;--warning-foreground:39 40% 10%;--info:218 88% 73%;--info-foreground:218 50% 10%;--border:242 17% 18%;--input:242 17% 26%;--ring:258 89% 70%;--sidebar:240 20% 9%;--sidebar-foreground:240 20% 96%;--gradient-start:270 95% 76%;--gradient-end:217 95% 74%}*{box-sizing:border-box}html{scroll-behavior:smooth;min-width:320px}body{background:hsl(var(--background));color:hsl(var(--foreground));-webkit-font-smoothing:antialiased;margin:0;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}button,input,textarea,select{font:inherit}button,summary,select{cursor:pointer}button,a,input,textarea,select,summary{-webkit-tap-highlight-color:transparent}:focus-visible{outline:2px solid hsl(var(--ring));outline-offset:4px}button:disabled{cursor:not-allowed}.button{border-radius:calc(var(--radius) - 2px);min-height:40px;transition:transform var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast);border:1px solid #0000;justify-content:center;align-items:center;gap:8px;padding:10px 16px;font-size:14px;font-weight:500;display:inline-flex}.button:hover:not(:disabled){box-shadow:var(--shadow-md);transform:translateY(-2px)}.button:active:not(:disabled){transform:scale(.98)}.button:disabled{opacity:.45}.button-primary{background:hsl(var(--primary));color:hsl(var(--primary-foreground));box-shadow:var(--shadow-elegant)}.button-secondary{background:hsl(var(--secondary));color:hsl(var(--secondary-foreground));border-color:hsl(var(--border))}.button-ghost{color:hsl(var(--muted-foreground));background:0 0}.button-ghost:hover{background:hsl(var(--muted));color:hsl(var(--foreground))}.button-destructive{background:hsl(var(--destructive));color:hsl(var(--destructive-foreground))}.card{background:hsl(var(--card));color:hsl(var(--card-foreground));border:1px solid hsl(var(--border));border-radius:var(--radius);box-shadow:var(--shadow-sm);min-width:0}.app-shell{min-height:100vh}.sidebar{display:none}.main-shell{min-width:0}.topbar{border-bottom:1px solid hsl(var(--border));background:hsl(var(--background) / .9);justify-content:space-between;align-items:center;gap:12px;height:72px;padding:0 20px;display:flex}.mobile-brand{color:hsl(var(--primary))}.ai-badge{border:1px solid hsl(var(--success) / .2);color:hsl(var(--success));background:hsl(var(--success) / .07);border-radius:999px;align-items:center;gap:6px;padding:3px 8px;font-size:10px;display:none}.ai-badge>span{background:hsl(var(--success));border-radius:50%;width:4px;height:4px}.language-control{color:hsl(var(--muted-foreground));align-items:center;gap:7px;display:flex}.language-control select{appearance:none;color:hsl(var(--foreground));background:0 0;border:none;max-width:76px;font-size:12px}.language-control option{background:hsl(var(--popover));color:hsl(var(--popover-foreground))}.header-avatar{background:hsl(var(--accent));width:32px;height:32px;color:hsl(var(--accent-foreground));border:1px solid hsl(var(--primary) / .25);border-radius:50%;place-items:center;display:grid}.page-content{max-width:1152px;animation:enter var(--transition-smooth) both;margin:0 auto;padding:28px 20px 32px}.tutor-page{max-width:944px;margin:0 auto}.tutor-hero{text-align:center;padding:8px 0 28px;position:relative}.tutor-hero:before{content:"";background:radial-gradient(ellipse, hsl(var(--primary) / .09), transparent 70%);pointer-events:none;z-index:-1;width:100%;max-width:600px;height:360px;position:absolute;top:-32px;left:50%;transform:translate(-50%)}.cosmic-orb{place-items:center;width:100px;height:100px;margin:0 auto 20px;display:grid;position:relative}.orb-center{border:1px solid hsl(var(--primary) / .35);background:linear-gradient(140deg, hsl(var(--primary) / .17), hsl(var(--info) / .04));width:70px;height:70px;color:hsl(var(--primary));box-shadow:0 0 48px hsl(var(--primary) / .12);border-radius:24px;place-items:center;display:grid;transform:rotate(-8deg)}.orb-center svg{transform:rotate(8deg)}.orb-ring{border:1px solid hsl(var(--primary) / .12);border-radius:50%;width:96px;height:96px;position:absolute}.ring-one{transform:rotate(-30deg)scaleY(.7)}.ring-two{width:112px;height:112px;transform:rotate(45deg)scaleY(.8)}.orb-star{color:hsl(var(--primary));animation:5s ease-in-out infinite float;position:absolute}.star-one{font-size:18px;top:6px;right:-4px}.star-two{font-size:23px;animation-delay:-2s;bottom:0;left:-4px}.eyebrow{letter-spacing:2px;color:hsl(var(--primary));text-transform:uppercase;justify-content:center;align-items:center;gap:7px;margin-bottom:16px;font-size:10px;font-weight:500;display:flex}.eyebrow>span{background:hsl(var(--primary));border-radius:50%;width:5px;height:5px}.hero-title{letter-spacing:-1.8px;margin:0;font-size:36px;font-weight:600;line-height:1.16}.gradient-text{background:linear-gradient(100deg, hsl(var(--gradient-start)), hsl(var(--gradient-end)));color:#0000;-webkit-background-clip:text;background-clip:text}.hero-description{max-width:520px;color:hsl(var(--muted-foreground));margin:20px auto 0;font-size:14px;line-height:1.8}.composer-section{max-width:800px;margin:0 auto}.composer{background:hsl(var(--card));color:hsl(var(--card-foreground));border:1px solid hsl(var(--primary) / .3);border-radius:calc(var(--radius) + 4px);box-shadow:var(--shadow-sm), 0 0 48px hsl(var(--primary) / .035);transition:border-color var(--transition);padding:20px;position:relative}.composer:focus-within{border-color:hsl(var(--primary) / .65)}.composer-header{align-items:center;gap:8px;font-size:14px;font-weight:500;display:flex}.composer-header>svg{color:hsl(var(--primary))}.composer textarea{resize:none;width:100%;color:hsl(var(--foreground));background:0 0;border:none;outline:none;min-height:76px;padding:16px 0 8px;font-size:14px;line-height:1.6}.composer textarea::placeholder{color:hsl(var(--muted-foreground))}.composer-bottom{justify-content:space-between;align-items:center;gap:12px;display:flex}.send-button{border-radius:calc(var(--radius) - 2px);width:36px;min-height:36px;padding:8px}.suggestions{flex-wrap:wrap;justify-content:center;gap:4px 8px;margin-top:12px;display:flex}.suggestions .button{border:1px solid hsl(var(--border));border-radius:999px;gap:6px;min-height:32px;padding:8px 10px;font-size:12px}.suggestion-dot{background:hsl(var(--primary));border-radius:50%;width:5px;height:5px}.dot-1{background:hsl(var(--info))}.dot-2{background:hsl(var(--success))}.dot-3{background:hsl(var(--warning))}.explore-section{margin-top:40px}.section-heading{margin-bottom:20px}.section-heading h2{letter-spacing:-.4px;font-size:18px;font-weight:600}.section-heading p{color:hsl(var(--muted-foreground));margin-top:6px;font-size:12px;line-height:1.6}.feature-grid{grid-template-columns:1fr;gap:16px;display:grid}.feature-card{border:1px solid hsl(var(--border));border-radius:var(--radius);background:hsl(var(--card));color:hsl(var(--card-foreground));transition:transform var(--transition), box-shadow var(--transition), border-color var(--transition);flex-direction:column;padding:24px;display:flex}.feature-card:hover{box-shadow:var(--shadow-md);border-color:hsl(var(--primary) / .45);transform:translateY(-3px)}.feature-icon{border-radius:calc(var(--radius) - 2px);width:44px;height:44px;color:hsl(var(--primary));background:hsl(var(--primary) / .12);border:1px solid hsl(var(--primary) / .14);place-items:center;display:grid}.feature-notes .feature-icon{color:hsl(var(--info));background:hsl(var(--info) / .1);border-color:hsl(var(--info) / .14)}.feature-quiz .feature-icon{color:hsl(var(--success));background:hsl(var(--success) / .1);border-color:hsl(var(--success) / .14)}.feature-label{text-transform:uppercase;letter-spacing:1px;color:hsl(var(--primary));margin-top:20px;font-size:11px;font-weight:500}.feature-notes .feature-label{color:hsl(var(--info))}.feature-quiz .feature-label{color:hsl(var(--success))}.feature-card h3{letter-spacing:-.3px;margin-top:8px;font-size:16px;font-weight:500;line-height:1.55}.feature-card p{color:hsl(var(--muted-foreground));margin-top:8px;font-size:12px;line-height:1.8}.subjects-section{margin-top:32px}.subjects-section h2{color:hsl(var(--muted-foreground));font-size:13px;font-weight:500}.subject-list{flex-wrap:wrap;gap:8px;margin-top:12px;display:flex}.subject-list .button{border:1px solid hsl(var(--border));background:hsl(var(--card));gap:8px;min-height:36px;padding:8px 14px;font-size:12px}.subject-list svg{color:hsl(var(--muted-foreground))}.study-tip{border:1px solid hsl(var(--primary) / .13);border-radius:var(--radius);background:hsl(var(--primary) / .035);gap:16px;margin-top:28px;padding:20px;display:flex}.tip-icon{color:hsl(var(--primary));flex-shrink:0;padding-top:2px}.study-tip h3{font-size:13px;font-weight:500}.study-tip p{color:hsl(var(--muted-foreground));margin-top:4px;font-size:12px;line-height:1.7}.app-footer{padding:8px 20px calc(120px + env(safe-area-inset-bottom));color:hsl(var(--muted-foreground));flex-wrap:wrap;justify-content:center;align-items:center;gap:8px;font-size:10px;display:flex}.footer-dot{display:none}.mobile-nav{width:100%;padding:8px 4px calc(8px + env(safe-area-inset-bottom));background:hsl(var(--sidebar) / .96);color:hsl(var(--sidebar-foreground));border-top:1px solid hsl(var(--border));z-index:20;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);grid-template-columns:repeat(6,1fr);display:grid;position:fixed;bottom:0;left:0}.mobile-nav a{text-align:center;color:hsl(var(--muted-foreground));border-radius:calc(var(--radius) - 4px);flex-direction:column;justify-content:center;align-items:center;gap:6px;padding:7px 1px;font-size:12px;line-height:16px;display:flex}.mobile-nav a>span{justify-content:center;align-items:center;min-height:32px;display:flex}.mobile-nav .active{color:hsl(var(--accent-foreground));background:hsl(var(--accent))}.tool-page{max-width:944px;margin:0 auto}.page-intro{margin:12px 0 32px}.page-symbol{background:hsl(var(--primary) / .1);color:hsl(var(--primary));border:1px solid hsl(var(--primary) / .2);border-radius:var(--radius);place-items:center;width:52px;height:52px;margin-bottom:24px;display:grid}.notes-symbol{color:hsl(var(--info));background:hsl(var(--info) / .1);border-color:hsl(var(--info) / .2)}.quiz-symbol{color:hsl(var(--success));background:hsl(var(--success) / .1);border-color:hsl(var(--success) / .2)}.page-intro .eyebrow{justify-content:flex-start;margin-bottom:12px}.page-intro h1{letter-spacing:-1px;max-width:800px;font-size:30px;font-weight:600;line-height:1.25}.page-intro p{color:hsl(var(--muted-foreground));max-width:680px;margin-top:12px;font-size:14px;line-height:1.8}.field-label{margin-bottom:12px;font-size:14px;font-weight:500;display:block}.field{border:1px solid hsl(var(--input));border-radius:calc(var(--radius) - 2px);background:hsl(var(--background));color:hsl(var(--foreground));width:100%;min-width:0;padding:12px 16px;font-size:14px;line-height:1.7;display:block}.field::placeholder{color:hsl(var(--muted-foreground))}.field:disabled{opacity:.5}.field[aria-invalid=true]{border-color:hsl(var(--destructive))}textarea.field{resize:vertical}.upload-zone{border:1px dashed hsl(var(--primary) / .4);background:hsl(var(--primary) / .025);border-radius:var(--radius);text-align:center;flex-direction:column;align-items:center;gap:8px;padding:32px 12px;display:flex}.upload-icon{background:hsl(var(--primary) / .1);color:hsl(var(--primary));border-radius:24px;place-items:center;width:72px;height:72px;margin-bottom:16px;display:grid}.preview-wrap{width:100%;position:relative}.preview-wrap img{object-fit:contain;border-radius:calc(var(--radius) - 4px);background:hsl(var(--muted));width:100%;height:260px}.preview-remove{position:absolute;top:8px;right:8px}.solution-empty{text-align:center;place-items:center;gap:24px;padding:32px 16px;display:grid}.math-doodle{color:hsl(var(--primary) / .6);letter-spacing:2px;font-family:Georgia,serif;font-size:30px;font-style:italic}.public-archive{border:1px solid hsl(var(--border));border-radius:var(--radius);background:hsl(var(--card));margin-top:24px;padding:20px 24px}.public-archive summary{align-items:center;gap:8px;font-size:14px;display:flex}.public-archive genmb-image{width:100%}.conversation-heading{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:20px;margin:8px 0 32px;display:flex}.conversation-heading .eyebrow{justify-content:flex-start}.conversation-heading h1{overflow-wrap:anywhere}.chat-messages{max-width:800px;margin:0 auto 24px}.message{overflow-wrap:anywhere;margin-bottom:24px;font-size:14px;line-height:1.8}.message-user{background:hsl(var(--accent));color:hsl(var(--accent-foreground));border-radius:var(--radius) var(--radius) 4px var(--radius);border:1px solid hsl(var(--primary) / .15);margin-left:12%;padding:16px 20px}.message-assistant{border:1px solid hsl(var(--border));border-radius:var(--radius);background:hsl(var(--card));color:hsl(var(--card-foreground));padding:20px}.assistant-label{color:hsl(var(--primary));align-items:center;gap:8px;margin-bottom:16px;font-size:12px;font-weight:500;display:flex}.mini-ai{background:hsl(var(--primary) / .1);border-radius:8px;padding:6px}.has-messages .composer-section{bottom:calc(112px + env(safe-area-inset-bottom));z-index:10;position:sticky}.has-messages .composer{box-shadow:var(--shadow-md)}.markdown{overflow-wrap:anywhere;font-size:14px;line-height:1.85}.markdown>*+*{margin-top:16px}.markdown h1,.markdown h2,.markdown h3{letter-spacing:-.3px;margin-top:24px;font-size:18px;font-weight:600}.markdown h1:first-child,.markdown h2:first-child,.markdown h3:first-child{margin-top:0}.markdown ul{padding-left:24px;list-style:outside}.markdown ol{padding-left:24px;list-style:decimal}.markdown li{margin-top:8px;padding-left:4px}.markdown pre{white-space:pre-wrap;border-radius:calc(var(--radius) - 4px);background:hsl(var(--muted));color:hsl(var(--muted-foreground));padding:16px;overflow-x:auto}.markdown code{font-family:ui-monospace,monospace;font-size:13px}.markdown blockquote{border-left:3px solid hsl(var(--primary));background:hsl(var(--primary) / .04);padding:8px 16px}.markdown a{color:hsl(var(--primary));text-decoration:underline}.empty-state{text-align:center;flex-direction:column;align-items:center;gap:16px;padding:48px 20px;display:flex}.empty-icon{background:hsl(var(--muted));width:64px;height:64px;color:hsl(var(--primary));border-radius:50%;place-items:center;display:grid}.empty-state p{line-height:1.8}.dialog-overlay{background:hsl(var(--background) / .75);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);z-index:50;animation:enter var(--transition);position:fixed;inset:0}.dialog-content{background:hsl(var(--popover));width:calc(100% - 32px);max-width:440px;max-height:85vh;color:hsl(var(--popover-foreground));border-radius:calc(var(--radius) + 4px);border:1px solid hsl(var(--border));box-shadow:var(--shadow-lg);z-index:51;animation:dialog-enter var(--transition);padding:28px;position:fixed;top:50%;left:50%;overflow-y:auto;transform:translate(-50%,-50%)}.dialog-close{min-height:32px;padding:6px;position:absolute;top:16px;right:16px}.dialog-actions{flex-wrap:wrap;justify-content:flex-end;gap:12px;margin-top:24px;display:flex}.toast-root{bottom:calc(112px + env(safe-area-inset-bottom));z-index:60;pointer-events:none;justify-content:flex-end;display:flex;position:fixed;left:16px;right:16px}.toast{background:hsl(var(--popover));color:hsl(var(--popover-foreground));border:1px solid hsl(var(--border));border-radius:var(--radius);box-shadow:var(--shadow-lg);pointer-events:auto;max-width:480px;animation:enter var(--transition);align-items:center;gap:12px;padding:12px 16px;display:flex}.toast.text-destructive{color:hsl(var(--destructive))}.quiz-card{max-width:760px;margin:0 auto}.quiz-progress{background:hsl(var(--muted));border-radius:999px;height:4px;overflow:hidden}.quiz-progress>div{background:linear-gradient(90deg, hsl(var(--primary)), hsl(var(--info)));height:100%;transition:width var(--transition-smooth)}.xp-tag{color:hsl(var(--warning));align-items:center;gap:4px;font-size:12px;display:flex}.quiz-option{border:1px solid hsl(var(--input));border-radius:calc(var(--radius) - 2px);background:hsl(var(--background));width:100%;color:hsl(var(--foreground));transition:background var(--transition), border-color var(--transition);align-items:center;gap:16px;padding:16px;font-size:14px;display:flex}.quiz-option:hover:not(:disabled),.quiz-option.selected{background:hsl(var(--primary) / .08);border-color:hsl(var(--primary))}.option-letter{background:hsl(var(--muted));width:28px;height:28px;color:hsl(var(--muted-foreground));border-radius:8px;flex-shrink:0;place-items:center;font-size:12px;display:grid}.quiz-option.correct{border-color:hsl(var(--success));background:hsl(var(--success) / .07)}.quiz-option.incorrect{border-color:hsl(var(--destructive));background:hsl(var(--destructive) / .07)}.quiz-explanation{background:hsl(var(--muted));border-radius:var(--radius);border:1px solid hsl(var(--border));margin-top:24px;padding:20px}.answer-correct h3{color:hsl(var(--success))}.answer-incorrect h3{color:hsl(var(--destructive))}.quiz-results{text-align:center;flex-direction:column;align-items:center;gap:20px;display:flex}.trophy-icon{background:hsl(var(--warning) / .1);color:hsl(var(--warning));border-radius:50%;padding:20px}.result-stats{gap:56px;margin:12px 0;display:flex}.result-stats>div{flex-direction:column;gap:8px;display:flex}.result-stats strong{color:hsl(var(--primary));font-size:36px;font-weight:600}.result-stats span{color:hsl(var(--muted-foreground));font-size:12px}.review-row{border-top:1px solid hsl(var(--border));gap:12px;padding-top:16px;display:flex}.community-total{color:hsl(var(--muted-foreground));flex-wrap:wrap;justify-content:center;align-items:center;gap:8px;margin-top:24px;font-size:12px;display:flex}.search-field{border:1px solid hsl(var(--input));background:hsl(var(--card));border-radius:calc(var(--radius) - 2px);color:hsl(var(--muted-foreground));align-items:center;gap:12px;padding:8px 16px;display:flex}.search-field input{color:hsl(var(--foreground));background:0 0;border:none;width:100%;padding:4px 0;font-size:14px}.history-row{align-items:center;gap:12px;padding:16px;display:flex}.history-icon{color:hsl(var(--primary));background:hsl(var(--primary) / .1);border-radius:calc(var(--radius) - 2px);padding:12px;display:none}.history-main{text-align:left;flex:1;min-width:0;padding:4px}.history-row .button{padding:8px}.settings-card{align-items:flex-start;gap:16px;padding:24px;display:flex}.settings-icon{color:hsl(var(--primary));flex-shrink:0;padding-top:2px}.settings-card h2{letter-spacing:-.4px;font-size:18px;font-weight:600}.settings-card p{color:hsl(var(--muted-foreground));margin-top:8px;font-size:14px;line-height:1.9}.settings-card .flex-1{min-width:0}.notfound{text-align:center;flex-direction:column;align-items:center;gap:24px;padding:72px 16px;display:flex}.notfound>svg{color:hsl(var(--primary))}@keyframes enter{0%{opacity:0}to{opacity:1}}@keyframes dialog-enter{0%{opacity:0;transform:translate(-50%,-48%)scale(.97)}to{opacity:1;transform:translate(-50%,-50%)scale(1)}}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-6px)}}@media (width>=640px){.topbar{padding:0 32px}.page-content{padding:36px 32px 32px}.hero-title{letter-spacing:-2px;font-size:48px;line-height:1.16}.tutor-hero{padding-top:12px;padding-bottom:32px}.hero-description{font-size:14px}.feature-grid{grid-template-columns:repeat(3,1fr)}.feature-card{padding:20px}.feature-card h3{font-size:15px}.feature-card p{font-size:12px}.ai-badge{display:inline-flex}.page-intro h1{font-size:36px}.history-icon{display:block}.history-row{gap:20px;padding:20px}.footer-dot{display:block}.settings-card{gap:24px;padding:28px}}@media (width>=1024px){.sidebar{border-right:1px solid hsl(var(--border));background:hsl(var(--sidebar));width:248px;height:100dvh;color:hsl(var(--sidebar-foreground));z-index:30;flex-direction:column;padding:32px 20px 20px;display:flex;position:fixed;top:0;left:0;overflow-y:auto}.wordmark{letter-spacing:-.6px;white-space:nowrap;align-items:center;gap:10px;padding:0 4px;font-size:20px;font-weight:600;display:flex}.brand-icon{width:36px;height:36px;color:hsl(var(--primary));background:hsl(var(--primary) / .12);border:1px solid hsl(var(--primary) / .15);border-radius:12px;place-items:center;display:grid}.wordmark-ai{color:hsl(var(--primary));font-size:16px;font-weight:500}.wordmark small{letter-spacing:0;color:hsl(var(--muted-foreground));margin-top:4px;font-size:10px;font-weight:400;display:block}.new-chat{background:hsl(var(--primary) / .06);color:hsl(var(--primary));border-color:hsl(var(--primary) / .22);justify-content:flex-start;margin-top:36px;padding:12px 16px;font-size:13px}.nav-label{color:hsl(var(--muted-foreground));letter-spacing:1.6px;margin:32px 12px 12px;font-size:10px;font-weight:500}.desktop-nav{flex-direction:column;gap:4px;display:flex}.nav-item{color:hsl(var(--muted-foreground));border-radius:calc(var(--radius) - 2px);transition:background var(--transition);align-items:center;gap:12px;padding:13px 14px;font-size:13px;display:flex}.nav-item:hover{background:hsl(var(--muted))}.nav-item.active{color:hsl(var(--accent-foreground));background:hsl(var(--accent));box-shadow:inset 2px 0 hsl(var(--primary))}.nav-ai{background:hsl(var(--primary) / .18);color:hsl(var(--primary));border-radius:5px;margin-left:auto;padding:2px 6px;font-size:10px}.nav-divider{margin-top:24px}.sidebar-bottom{margin-top:auto;padding-top:32px}.journey-card{border:1px solid hsl(var(--primary) / .13);background:linear-gradient(135deg, hsl(var(--primary) / .07), hsl(var(--info) / .025));border-radius:var(--radius);padding:16px}.level-icon{width:28px;height:28px;color:hsl(var(--primary));background:hsl(var(--primary) / .1);border-radius:8px;place-items:center;display:grid}.progress-track{background:hsl(var(--muted));border-radius:999px;height:4px;margin:16px 0 10px;overflow:hidden}.progress-track>div{background:linear-gradient(90deg, hsl(var(--primary)), hsl(var(--info)));height:100%}.journey-card .text-xs{font-size:10px}.sidebar-user{border-top:1px solid hsl(var(--border));align-items:center;gap:12px;margin-top:24px;padding:20px 0 0;display:flex}.user-avatar{border:1px solid hsl(var(--border));background:hsl(var(--muted));width:36px;height:36px;color:hsl(var(--primary));border-radius:50%;place-items:center;display:grid}.sidebar-user .text-xs{margin-top:4px;font-size:10px}.main-shell{margin-left:248px}.topbar{height:76px;padding:0 36px}.mobile-brand{display:none}.page-content{padding:28px 36px 32px}.tutor-hero{padding-top:8px}.cosmic-orb{margin-bottom:16px}.hero-title{font-size:48px}.hero-description{max-width:520px}.feature-card{padding:24px}.feature-card h3{font-size:16px}.mobile-nav{display:none}.app-footer{padding-bottom:24px}.has-messages .composer-section{bottom:20px}.toast-root{bottom:24px;left:auto;right:24px}.page-intro{margin-top:20px}.tool-page{padding-bottom:24px}}@media (width>=1280px){.page-content{padding-left:48px;padding-right:48px}.tutor-hero{padding-top:12px}.hero-title{font-size:52px}.hero-description{font-size:14px}.feature-card{padding:24px}.explore-section{margin-top:40px}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto;transition-duration:.01ms;animation-duration:.01ms}}@property --tw-space-y-reverse{syntax:"*";inherits:false;initial-value:0}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-font-weight{syntax:"*";inherits:false}@property --tw-tracking{syntax:"*";inherits:false}@property --tw-outline-style{syntax:"*";inherits:false;initial-value:solid}@keyframes spin{to{transform:rotate(360deg)}}@keyframes pulse{50%{opacity:.5}}