.app-header[data-v-980c1759]{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding:.75rem 1rem;position:sticky;top:0;z-index:100;box-shadow:0 2px 10px #0000001a}.header-content[data-v-980c1759]{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;align-items:center}.logo[data-v-980c1759]{display:flex;align-items:center;gap:.5rem;text-decoration:none;color:#fff;font-weight:700;font-size:1.25rem}.logo-icon[data-v-980c1759]{font-size:1.5rem}.nav-menu[data-v-980c1759]{display:flex;gap:1.5rem}.nav-link[data-v-980c1759]{color:#ffffffe6;text-decoration:none;padding:.5rem 1rem;border-radius:8px;transition:all .3s ease}.nav-link[data-v-980c1759]:hover,.nav-link.router-link-active[data-v-980c1759]{background:#fff3;color:#fff}.menu-toggle[data-v-980c1759]{display:none;flex-direction:column;gap:4px;background:none;border:none;cursor:pointer;padding:.5rem}.menu-toggle span[data-v-980c1759]{width:24px;height:2px;background:#fff;transition:all .3s ease}.main-content[data-v-980c1759]{min-height:calc(100vh - 60px);background:#f5f7fa}@media (max-width: 768px){.nav-menu[data-v-980c1759]{display:none;position:absolute;top:100%;left:0;right:0;background:linear-gradient(135deg,#667eea,#764ba2);flex-direction:column;padding:1rem;gap:.5rem}.nav-menu.active[data-v-980c1759],.menu-toggle[data-v-980c1759]{display:flex}}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;line-height:1.6;color:#333;background:#f5f7fa}.container{width:100%;max-width:1200px;margin:0 auto;padding:0 1rem}.card{background:#fff;border-radius:12px;box-shadow:0 2px 12px #00000014;padding:1.5rem;margin-bottom:1rem}.btn{display:inline-flex;align-items:center;justify-content:center;padding:.75rem 1.5rem;border-radius:8px;font-size:1rem;font-weight:500;cursor:pointer;transition:all .3s ease;border:none;text-decoration:none}.btn-primary{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 4px 12px #667eea66}.btn-secondary{background:#f0f2f5;color:#333}.btn-secondary:hover{background:#e4e6e9}.btn-success{background:linear-gradient(135deg,#11998e,#38ef7d);color:#fff}.btn-danger{background:linear-gradient(135deg,#eb3349,#f45c43);color:#fff}.form-group{margin-bottom:1rem}.form-label{display:block;margin-bottom:.5rem;font-weight:500;color:#555}.form-input,.form-select{width:100%;padding:.75rem 1rem;border:1px solid #e0e0e0;border-radius:8px;font-size:1rem;transition:border-color .3s ease}.form-input:focus,.form-select:focus{outline:none;border-color:#667eea;box-shadow:0 0 0 3px #667eea1a}@media (max-width: 768px){html{font-size:14px}.container{padding:0 .75rem}.card{padding:1rem;border-radius:8px}}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.fade-in{animation:fadeIn .3s ease}.option-item{padding:1rem;margin:.5rem 0;border:2px solid #e0e0e0;border-radius:8px;cursor:pointer;transition:all .2s ease}.option-item:hover{border-color:#667eea;background:#f8f9ff}.option-item.selected{border-color:#667eea;background:#f0f3ff}.option-item.correct{border-color:#38ef7d;background:#f0fff5}.option-item.wrong{border-color:#f45c43;background:#fff5f5}.question-type{display:inline-block;padding:.25rem .75rem;border-radius:20px;font-size:.75rem;font-weight:500}.type-single{background:#e3f2fd;color:#1565c0}.type-multiple{background:#fff3e0;color:#ef6c00}.type-short{background:#f3e5f5;color:#7b1fa2}.type-analysis{background:#e8f5e9;color:#2e7d32}.type-case{background:#fce4ec;color:#c2185b}.type-essay{background:#fff8e1;color:#f57f17}