.hamburger{display:none;flex-direction:column;gap:4px;background:none;border:none;cursor:pointer;padding:4px;z-index:101}.hamburger span{display:block;width:22px;height:2px;background:var(--text);border-radius:2px;transition:.2s}.hamburger.light span{background:#fff}.mobile-menu{display:none;background:#fff;border-top:1px solid var(--border);padding:.5rem 0}.mobile-link{display:block;padding:.75rem 1.5rem;color:var(--text);font-weight:500;text-decoration:none;border-bottom:1px solid var(--border)}.mobile-link:last-child{border-bottom:none}.mobile-link:hover{background:var(--bg)}@media (max-width: 768px){.desktop-nav{display:none!important}.hamburger{display:flex}.mobile-menu{display:block}.nav-container{flex-wrap:wrap;height:auto!important;padding:8px 10px!important}}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#0006;z-index:200;display:flex;align-items:center;justify-content:center}.modal-card{background:#fff;border-radius:16px;padding:2rem;width:90%;box-shadow:0 20px 60px #0003}:root{--primary: #4A90D9;--primary-dark: #357ABD;--secondary: #FF6B6B;--accent: #4ECDC4;--accent2: #45B7D1;--bg: #F7F9FC;--bg-card: #FFFFFF;--text: #2C3E50;--text-light: #7F8C8D;--border: #E1E8ED;--success: #27AE60;--warning: #F39C12;--danger: #E74C3C;--shadow: 0 2px 8px rgba(0, 0, 0, .08);--shadow-lg: 0 4px 20px rgba(0, 0, 0, .12);--radius: 12px;--radius-sm: 8px;--transition: .2s ease}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Segoe UI,system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--text);line-height:1.6}a{color:var(--primary);text-decoration:none}a:hover{color:var(--primary-dark)}.main-nav,.admin-nav{background:#fff;box-shadow:var(--shadow);position:sticky;top:0;z-index:100}.admin-nav{background:var(--text)}.admin-nav .logo-text,.admin-nav .nav-link{color:#fff}.nav-container{max-width:1200px;margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;height:60px}.logo{display:flex;align-items:center;gap:8px;font-size:1.25rem;font-weight:700;color:var(--text);text-decoration:none}.logo-icon{font-size:1.5rem}.nav-links{display:flex;align-items:center;gap:8px}.nav-link{padding:8px 16px;border-radius:var(--radius-sm);color:var(--text);font-weight:500;transition:var(--transition)}.nav-link:hover{background:var(--bg);color:var(--primary)}.nav-link.router-link-active{background:var(--primary);color:#fff}.admin-link{border:1px solid var(--border)}.nav-user{padding:8px 12px;color:var(--text-light);font-size:.9rem}.btn-logout{padding:8px 16px;border:none;border-radius:var(--radius-sm);background:var(--danger);color:#fff;font-weight:600;cursor:pointer;transition:var(--transition)}.btn-logout:hover{opacity:.9}.nav-dropdown{position:relative}.dropdown-trigger{cursor:pointer}.nav-dropdown-menu{position:absolute;top:100%;left:0;background:#fff;border-radius:var(--radius-sm);box-shadow:var(--shadow-lg);min-width:160px;z-index:110;padding:8px 0}.nav-dropdown-item{display:block;padding:8px 16px;color:var(--text);font-size:.9rem;transition:var(--transition)}.nav-dropdown-item:hover{background:var(--bg);color:var(--primary)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:10px 20px;border-radius:var(--radius-sm);font-weight:600;font-size:.95rem;border:none;cursor:pointer;transition:var(--transition);font-family:inherit}.btn:hover{opacity:.9;transform:translateY(-1px)}.btn:active{transform:translateY(0)}.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-dark)}.btn-secondary{background:var(--secondary);color:#fff}.btn-success{background:var(--success);color:#fff}.btn-danger{background:var(--danger);color:#fff}.btn-outline{background:transparent;color:var(--primary);border:2px solid var(--primary)}.btn-outline:hover{background:var(--primary);color:#fff}.btn-sm{padding:6px 14px;font-size:.85rem}.btn-lg{padding:14px 28px;font-size:1.1rem;border-radius:var(--radius)}.form-group{margin-bottom:1rem}.form-group label{display:block;font-weight:600;margin-bottom:.35rem;font-size:.9rem}input,select,textarea{font-family:inherit;font-size:.95rem;padding:10px 14px;border:2px solid var(--border);border-radius:var(--radius-sm);outline:none;width:100%;transition:border-color var(--transition);background:#fff}input:focus,select:focus,textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px #4a90d91a}.card{background:var(--bg-card);border-radius:var(--radius);box-shadow:var(--shadow);padding:1.5rem;transition:var(--transition)}.grid{display:grid;gap:1rem}.grid-2{grid-template-columns:repeat(auto-fill,minmax(280px,1fr))}.grid-3{grid-template-columns:repeat(auto-fill,minmax(200px,1fr))}.grid-4{grid-template-columns:repeat(auto-fill,minmax(160px,1fr))}.container{max-width:800px;margin:0 auto;padding:1.5rem}.container-wide{max-width:1100px;margin:0 auto;padding:1.5rem}.page-title{font-size:1.75rem;font-weight:800;margin-bottom:1.25rem}.text-center{text-align:center}.mt-1{margin-top:1rem}.mt-2{margin-top:2rem}.mb-1{margin-bottom:1rem}.mb-2{margin-bottom:2rem}.flex{display:flex}.flex-center{display:flex;align-items:center;justify-content:center}.flex-between{display:flex;align-items:center;justify-content:space-between}.gap-1{gap:.5rem}.gap-2{gap:1rem}.flex-wrap{flex-wrap:wrap}.badge{display:inline-block;padding:2px 10px;border-radius:100px;font-size:.75rem;font-weight:600}.badge-primary{background:var(--primary);color:#fff}.badge-success{background:var(--success);color:#fff}.badge-warning{background:var(--warning);color:#fff}.progress-bar{height:8px;background:var(--border);border-radius:4px;overflow:hidden;margin:.75rem 0}.progress-bar-fill{height:100%;background:var(--primary);border-radius:4px;transition:width .4s ease}table{width:100%;border-collapse:collapse}th,td{padding:.6rem .75rem}th{font-weight:600;font-size:.8rem;color:var(--text-light);text-transform:uppercase;text-align:left;background:#f8fafc}tr{border-bottom:1px solid var(--border)}tr:hover{background:#f8fafc}.word-btn{display:inline-flex;align-items:center;justify-content:center;padding:.75rem 1.5rem;font-size:1.5rem;font-weight:700;background:#fff;border:2px solid var(--border);border-radius:var(--radius);cursor:pointer;letter-spacing:.1em;transition:var(--transition);color:var(--text);min-width:100px}.word-btn:hover{border-color:var(--primary);background:#f0f0ff;transform:scale(1.05)}.word-btn.correct{border-color:var(--success);background:#dcfce7;color:#166534}.assessment-input{font-size:1.5rem;text-align:center;letter-spacing:.1em;font-weight:600;padding:.75rem}.result-card{text-align:center;padding:2.5rem 2rem}.result-score{font-size:4rem;font-weight:800;color:var(--primary)}.result-text{font-size:1.1rem;color:var(--text-light);margin:.5rem 0 1.5rem}.audio-btn{width:48px;height:48px;border-radius:50%;background:var(--primary);color:#fff;border:none;display:inline-flex;align-items:center;justify-content:center;font-size:1.2rem;cursor:pointer;transition:var(--transition)}.audio-btn:hover{background:var(--primary-dark);transform:scale(1.1)}.level-card{cursor:pointer;transition:all .2s ease;padding:1.25rem 1rem;display:flex;flex-direction:column;align-items:flex-start;gap:.25rem}.level-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}.level-icon{font-size:1.75rem;margin-bottom:.1rem}@media (max-width: 768px){.container{padding:.75rem;max-width:100%}.page-title{font-size:1.3rem}.nav-container{padding:0 10px;height:48px}.nav-link{padding:5px 8px;font-size:.8rem}.nav-user{display:none}.grid-2,.grid-3,.grid-4{grid-template-columns:1fr;gap:.5rem}.card{padding:.85rem}.word-btn{padding:.5rem .75rem;font-size:1.1rem;min-width:60px}.result-score{font-size:2.5rem}.result-card{padding:1.5rem 1rem}table{font-size:.75rem}th,td{padding:.35rem .4rem}.flex-between{flex-direction:column;align-items:flex-start;gap:.4rem}.btn-lg{font-size:.95rem;padding:.65rem 1.25rem}.btn-sm{font-size:.75rem;padding:.3rem .6rem}.audio-btn{width:40px;height:40px;font-size:1rem}.assessment-input{font-size:1.2rem;max-width:100%}.modal-card{padding:1.25rem;max-width:95%;max-height:85vh}.drop-slot,.letter-tile{width:38px;height:38px;font-size:1.1rem}}@media (max-width: 400px){.page-title{font-size:1.15rem}.word-btn{padding:.4rem .6rem;font-size:1rem;min-width:50px}.drop-slot,.letter-tile{width:32px;height:32px;font-size:1rem}.btn{font-size:.85rem;padding:.5rem .75rem}}