@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700&display=swap");*,:after,:before{box-sizing:border-box}:root{--primary:#04c;--primary-hover:#039;--secondary:#06f;--accent:#00d1ff;--bg:#f8fafc;--text:#0f172a;--success:#10b981;--card-bg:#fff;--border:#e2e8f0;--shadow:0 4px 12px rgba(0,68,204,.1)}body,html{margin:0;padding:0;width:100%;overflow-x:hidden;font-family:Inter,sans-serif;background-color:var(--bg);color:var(--text);line-height:1.5}.container{max-width:1000px;margin:0 auto;padding:40px 20px}@media (max-width:768px){.container{padding:20px 15px}}.header{display:flex;justify-content:space-between;align-items:center;margin-bottom:40px;border-bottom:1px solid #e2e8f0;padding-bottom:20px}@media (max-width:640px){.header{flex-direction:column;align-items:flex-start;gap:16px}}h1,h2,h3{letter-spacing:-.025em;font-weight:700}.card{background:var(--card-bg);padding:24px;border-radius:16px;border:1px solid var(--border);margin-bottom:24px;transition:transform .2s,box-shadow .2s;box-shadow:var(--shadow)}.card:hover{transform:translateY(-4px);box-shadow:0 8px 24px rgba(0,102,255,.15)}@media (max-width:640px){.card{padding:16px}}.shadow-lg{box-shadow:0 10px 25px -3px rgba(0,102,255,.1)}.btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 24px;background:var(--primary);color:#fff;border:none;border-radius:12px;cursor:pointer;text-decoration:none;font-weight:700;font-size:.95rem;transition:all .2s;box-shadow:0 4px 6px rgba(0,102,255,.2)}.btn:hover{background:var(--primary-hover);transform:translateY(-2px);box-shadow:0 6px 12px rgba(0,102,255,.3)}.btn-secondary{background:#fff;color:var(--primary);border:2px solid var(--primary)}.btn-secondary:hover{background:#f3e5f5;color:var(--primary-hover)}.input{width:100%;padding:14px 18px;border:2px solid var(--border);border-radius:12px;margin-top:8px;margin-bottom:20px;box-sizing:border-box;font-family:inherit;font-size:1rem;transition:border-color .2s}.input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 4px rgba(0,102,255,.1)}.btn-teacher-access,.nav-item-auth{text-decoration:none!important;color:#fff!important;background:var(--primary)!important;font-weight:800!important;font-size:.9rem!important;padding:10px 24px!important;border-radius:14px!important;transition:all .3s!important;box-shadow:0 4px 12px rgba(0,102,255,.3)!important;display:inline-flex!important;align-items:center!important;justify-content:center!important;cursor:pointer!important;border:none!important}.btn-teacher-access{padding:16px 36px!important;border-radius:20px!important;text-transform:uppercase!important;letter-spacing:1px!important}.btn-teacher-access:hover,.nav-item-auth:hover{background:var(--primary-hover)!important;transform:scale(1.05)!important;box-shadow:0 8px 20px rgba(0,102,255,.4)!important}.option-btn{width:100%;padding:16px;margin-bottom:12px;background:#fff;border:1px solid #e2e8f0;border-radius:8px;text-align:left;font-size:1rem;font-weight:500;cursor:pointer;display:flex;align-items:center;transition:all .2s}.option-btn:hover{border-color:var(--accent);background:#f0f9ff}.option-btn.selected{background:#e0f2fe;border-color:var(--accent);color:#0369a1}.option-btn:before{content:"";width:8px;height:8px;border-radius:50%;background:#cbd5e1;margin-right:12px}.option-btn.selected:before{background:var(--accent)}