*{box-sizing:border-box}body{margin:0;font-family:Arial,sans-serif;background:#eef8ff;color:#12345b}.app{display:flex;min-height:100vh}aside{width:220px;background:linear-gradient(180deg,#087ee8,#0755bd);color:white;padding:24px 14px}aside h2{margin:0 0 25px}nav a{display:block;color:white;text-decoration:none;padding:13px 12px;border-radius:9px;margin:5px 0}nav a:hover,nav a.active{background:rgba(255,255,255,.16)}main{flex:1;padding:30px;max-width:1400px;margin:auto}header{text-align:center;margin-bottom:28px}header h1{margin-bottom:8px;font-size:32px}header p{color:#1475dc;font-weight:bold}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}.stats div,.card,.quiz{background:white;border:1px solid #d7e8f8;border-radius:14px;padding:22px;box-shadow:0 5px 18px rgba(20,100,170,.08)}.stats b{display:block;font-size:27px;color:#087ee8}.stats span{color:#6b7f95}.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.card{text-align:center}.op{font-size:45px;color:#087ee8}.card a,.button,button{display:inline-block;border:0;background:#087ee8;color:white;text-decoration:none;padding:12px 25px;border-radius:8px;font-weight:bold;cursor:pointer}.quiz-wrap{min-height:100vh;display:grid;place-items:center;padding:30px;background:#eef8ff}.quiz{width:min(700px,100%)}.quiz h2{text-align:center;font-size:44px;margin:45px 0}.badge{display:inline-block;padding:7px 12px;border:1px solid #9bc9f5;border-radius:20px;color:#087ee8}.options{display:grid;grid-template-columns:1fr 1fr;gap:15px}.options label{cursor:pointer}.options input{display:none}.options span{display:block;padding:18px;border:2px solid #d9e8f5;border-radius:10px}.options input:checked+span{border-color:#087ee8;background:#eef8ff}.quiz button{margin-top:25px;width:100%;font-size:16px}.secondary{background:#6c7f92;margin-left:8px}@media(max-width:900px){aside{display:none}.stats,.cards{grid-template-columns:1fr 1fr}}@media(max-width:600px){main{padding:15px}.stats,.cards,.options{grid-template-columns:1fr}header h1{font-size:25px}.quiz h2{font-size:34px}}

.user{padding:8px 10px;margin-bottom:15px;background:rgba(255,255,255,.12);border-radius:8px}.welcome{text-align:center}.logo{font-size:65px}.welcome form{max-width:430px;margin:30px auto 0;text-align:left}.welcome label{display:block;font-weight:bold;margin-bottom:8px}.name-input{width:100%;padding:15px;border:1px solid #c8def1;border-radius:9px;font-size:17px;margin-bottom:12px}.error{color:#c62828;margin:10px 0}
.dashboard-header{display:flex;align-items:center;justify-content:space-between;gap:20px}
.dashboard-header h1{margin-bottom:8px}
.logout-top{display:inline-block;background:#d32f2f;color:#fff;text-decoration:none;padding:12px 22px;border-radius:9px;font-weight:bold;white-space:nowrap}
.logout-top:hover{background:#b71c1c}
@media(max-width:600px){.dashboard-header{align-items:flex-start;flex-direction:column}.logout-top{width:100%;text-align:center}}