:root{--primary:#005BF6;--success:#B0DC35;--error:#FF3535;--background:#fff;--border:#e0e0e0;--text:#333;--selected:#f0f8ff}.reactivo{margin-bottom:2rem}.quiz-options{display:flex;flex-direction:column;gap:1rem}.quiz-option{padding:1rem 1.5rem;border:1px solid var(--border);border-radius:8px}.quiz-option.selected{background:rgb(255 53 53 / .1);border-color:var(--selected);color:#9f1f1f}.quiz-option.correct{background:rgb(176 220 53 / .1);border-color:var(--success);color:#4a5d16}.quiz-counter{position:fixed;bottom:0;left:0;width:100%;background:var(--background);padding:1rem;box-shadow:0 -2px 8px rgb(0 0 0 / .1);z-index:1000;transition:transform 0.3s ease;display:flex;justify-content:center}.quiz-progress-container{margin:0 auto;display:flex;flex-direction:column;align-items:center;gap:.5rem;max-width:600px;padding:0 1rem;width:100%}.quiz-progress{flex-grow:1;height:6px;background:#f0f0f0;border-radius:3px;overflow:hidden;width:100%;min-width:200px}.quiz-progress-bar{height:100%;background:var(--primary);width:0%;transition:width 0.3s ease;display:block}.quiz-progress-text{font-size:.9rem;color:var(--text);text-align:center;margin-top:.25rem}.quiz-results{margin:2rem auto;padding:2rem;background:var(--background);border-radius:12px;box-shadow:0 2px 8px rgb(0 0 0 / .1);display:none}.quiz-results.visible{display:block}.quiz-results-title{font-size:1.5rem;color:var(--text);margin-bottom:1.5rem;text-align:center}.quiz-results-summary{display:grid;grid-template-columns:repeat(4,1fr);gap:1.5rem;margin-bottom:2rem}.quiz-results-stat{text-align:center;padding:1.5rem;background:#f8f9fa;border-radius:8px}.quiz-results-value{font-size:2rem;font-weight:700;color:var(--primary)}.quiz-results-label{margin-top:.5rem;color:var(--text)}.quiz-mode-button{display:block;width:100%;padding:1rem;background:var(--primary);color:#fff;border:none;border-radius:8px;font-size:1rem;cursor:pointer;transition:background-color 0.3s ease}.quiz-mode-button:hover{background-color:#0046c3}@media (max-width:768px){.reactivo{margin-bottom:1.5rem}.quiz-option{padding:.875rem 1.25rem}.quiz-results-summary{grid-template-columns:1fr 1fr}.quiz-results-stat{padding:1rem}}@media (max-width:480px){.quiz-results-summary{grid-template-columns:1fr}}.quiz-time-warning{text-align:center;color:var(--error);margin-bottom:1.5rem;font-size:1rem}