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button{width:100%}}.dashboard-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:2rem}.topics-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem;margin-bottom:2rem}.topic-card{border:2px solid var(--charcoal);padding:2rem 1.5rem;text-align:center;cursor:pointer;background:#fff;transition:all .2s ease}.topic-card:hover{background-color:var(--light-gray);transform:translateY(-2px)}.topic-card h3{font-size:1.125rem;font-weight:600;margin-bottom:.5rem}.topic-card p{color:#666;font-size:.9rem}.live-activity{border:2px solid var(--charcoal);padding:1.5rem;background:var(--light-gray)}.live-activity h3{font-weight:600;margin-bottom:1rem}.live-activity ul{list-style:none;padding:0}.live-activity li{margin-bottom:.5rem}@media(max-width:992px){.topics-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:640px){.topics-grid{grid-template-columns:1fr}}.study-header{display:grid;grid-template-columns:1fr 2fr 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.logout-btn{justify-self:center}}.problems-header{display:grid;grid-template-columns:1fr 3fr 1fr;align-items:center;margin-bottom:1rem}.problems-header h1{text-align:center;font-size:1.125rem;font-weight:600}.progress-section{border:2px solid var(--charcoal);padding:1rem 1.5rem;margin-bottom:1.5rem;background:var(--light-gray)}.progress-section p{font-weight:600}.problem-card{border:2px solid var(--charcoal);padding:1.5rem;margin-bottom:1rem;background:#fff}.problem-card h3{font-weight:600;margin-bottom:.75rem}.problem-card details{margin:1rem 0}.problem-card summary{cursor:pointer;font-weight:500;color:var(--charcoal)}.problem-card summary:hover{text-decoration:underline}.problem-card label{display:flex;align-items:center;gap:.5rem;cursor:pointer}.problem-card input[type=checkbox]{width:1rem;height:1rem;cursor:pointer}.back-link{text-decoration:none;color:var(--brick-orange);font-weight:500}.back-link:hover{text-decoration:underline}.problems-header .logout-btn{justify-self:end}.logout-btn{padding:.5rem 1.5rem;background-color:var(--brick-orange);color:#fff;font-weight:600;border:2px solid var(--charcoal)}@media(max-width:992px){.problems-header{grid-template-columns:1fr;gap:1rem;text-align:center}.problems-header .logout-btn{justify-self:center}}@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;--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 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components;@layer utilities{.static{position:static}.container{width:100%}@media(min-width:40rem){.container{max-width:40rem}}@media(min-width:48rem){.container{max-width:48rem}}@media(min-width:64rem){.container{max-width:64rem}}@media(min-width:80rem){.container{max-width:80rem}}@media(min-width:96rem){.container{max-width:96rem}}.block{display:block}.grid{display:grid}.inline{display:inline}.italic{font-style:italic}}:root{--charcoal:#2c2c2c;--cream:#fff9f0;--brick-orange:#f47843;--sunshine-yellow:#ffcd60;--pacific-green:#3a6a55;--light-gray:#e5e5e5}*{box-sizing:border-box;margin:0;padding:0}.body{background-color:var(--cream);color:var(--charcoal);flex-direction:column;height:100vh;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;display:flex}header{background-color:var(--light-gray);border-bottom:1px solid #ccc;justify-content:space-between;align-items:center;padding:1.25rem 2rem;display:flex}.username-display{color:#666;font-size:.9rem}footer{background-color:var(--charcoal);color:var(--cream);text-align:center;margin-top:auto;padding:1rem}footer a{color:var(--sunshine-yellow);text-decoration:none}footer a:hover{text-decoration:underline}main{flex:1;width:100%;max-width:1200px;margin:0 auto;padding:2rem}.text-pacific-green{color:var(--pacific-green)}.text-sunshine-yellow{color:var(--sunshine-yellow)}.bg-pacific-green{background-color:var(--pacific-green)}.bg-sunshine-yellow{background-color:var(--sunshine-yellow)}.bg-brick-orange{background-color:var(--brick-orange)}.border-pacific-green{border-color:var(--pacific-green)}button{cursor:pointer;border:none;font-family:Inter,sans-serif;transition:all .2s}button:hover{opacity:.9;transform:translateY(-1px)}button:active{transform:translateY(0)}input{font-family:Inter,sans-serif;transition:border-color .2s}input:focus{outline:none;border-color:var(--charcoal)!important}#app-title{color:var(--charcoal);font-size:1.25rem;font-weight:600}#app-slogan{color:var(--charcoal);font-size:.75px;font-weight:300}@media(max-width:640px){main{padding:1rem}header{flex-direction:column;gap:.5rem;padding:1rem}}