:root{--font-heading:"Outfit", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-body:"Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--bg-primary:#0c1322;--bg-secondary:#121b31;--glass-bg:#1e293b73;--glass-border:#ffffff14;--glass-border-hover:#6366f140;--glass-glow:#6366f126;--color-primary:#5f54fc;--color-primary-hover:#7c72fd;--color-text-main:#f1f5f9;--color-text-muted:#9fafc6;--color-success:#1daf52;--color-success-bg:#10b9811f;--color-success-border:#10b9814d;--color-danger:#ed2c59;--color-danger-bg:#f43f5e1f;--color-danger-border:#f43f5e4d;--color-warning:#e7b008;--color-warning-bg:#f59e0b1a;--color-warning-border:#f59e0b4d;--radius-sm:8px;--radius-md:14px;--radius-lg:24px;--transition-fast:.15s ease;--transition-normal:.25s cubic-bezier(.4, 0, .2, 1);--transition-slow:.4s cubic-bezier(.4, 0, .2, 1)}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-primary);color:var(--color-text-main);font-family:var(--font-body);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-image:radial-gradient(at 10% 20%,#6366f11a 0,#0000 50%),radial-gradient(at 90% 80%,#8b5cf614 0,#0000 50%);min-height:100vh;line-height:1.6;overflow-x:hidden}h1,h2,h3,h4,h5{font-family:var(--font-heading);letter-spacing:-.02em;font-weight:700}.app-container{flex-direction:column;gap:2rem;max-width:900px;min-height:100vh;margin:0 auto;padding:2rem 1.5rem 5rem;display:flex}.navbar{background:var(--glass-bg);-webkit-backdrop-filter:blur(12px);border:1px solid var(--glass-border);border-radius:var(--radius-md);justify-content:space-between;align-items:center;padding:.8rem 1.5rem;display:flex;box-shadow:0 4px 30px #0003}.nav-brand{font-family:var(--font-heading);color:#fff;align-items:center;gap:.75rem;font-size:1.3rem;font-weight:800;display:flex}.nav-brand span{background:linear-gradient(135deg,#5f54fc,#e054fc);-webkit-text-fill-color:transparent;-webkit-background-clip:text}.nav-logo{width:32px;height:32px;color:var(--color-primary);filter:drop-shadow(0 0 6px #6366f199)}.nav-tabs{gap:.5rem;display:flex}.nav-tab{color:var(--color-text-muted);font-family:var(--font-heading);border-radius:var(--radius-sm);cursor:pointer;transition:all var(--transition-fast);background:0 0;border:none;padding:.5rem 1rem;font-size:.95rem;font-weight:500}.nav-tab:hover{color:#fff;background:#ffffff0d}.nav-tab.active{color:#fff;background:var(--color-primary);box-shadow:0 0 15px #6366f166}.quiz-card{background:var(--glass-bg);-webkit-backdrop-filter:blur(12px);border:1px solid var(--glass-border);border-radius:var(--radius-lg);transition:border var(--transition-normal);flex-direction:column;gap:1.5rem;padding:2.5rem;display:flex;position:relative;box-shadow:0 8px 32px #0000004d}.quiz-card.success-border{border-color:var(--color-success);box-shadow:0 8px 32px #10b98114}.quiz-card.danger-border{border-color:var(--color-danger);box-shadow:0 8px 32px #f43f5e14}.card-header{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:1rem;display:flex}.category-badge{color:#938bfd;font-family:var(--font-heading);letter-spacing:.03em;text-transform:uppercase;background:#6366f126;border:1px solid #6366f140;border-radius:30px;padding:.35rem .85rem;font-size:.8rem;font-weight:600}.question-text{color:#fff;margin-bottom:.5rem;font-size:1.35rem;font-weight:600;line-height:1.45}.options-list{grid-template-columns:1fr;gap:1rem;margin-bottom:.5rem;display:grid}.option-button{border:1px solid var(--glass-border);color:var(--color-text-main);border-radius:var(--radius-md);text-align:left;cursor:pointer;font-family:var(--font-body);transition:all var(--transition-normal);background:#ffffff05;align-items:flex-start;gap:1rem;padding:1.2rem 1.5rem;font-size:1.05rem;font-weight:400;display:flex;position:relative}.option-letter{border:1px solid var(--glass-border);width:28px;min-width:28px;height:28px;font-family:var(--font-heading);color:var(--color-text-muted);transition:all var(--transition-normal);background:#ffffff0f;border-radius:8px;justify-content:center;align-items:center;font-size:.9rem;font-weight:700;display:flex}.option-button:hover:not(:disabled){border-color:var(--glass-border-hover);background:#ffffff0d;transform:translate(4px)}.option-button:hover:not(:disabled) .option-letter{color:#fff;border-color:var(--color-primary);background:#6366f133}.option-button.selected{border-color:var(--color-primary);background:#6366f114}.option-button.correct{background:var(--color-success-bg);border-color:var(--color-success);color:#fff}.option-button.correct .option-letter{background:var(--color-success);color:#fff;border-color:var(--color-success)}.option-button.incorrect{background:var(--color-danger-bg);border-color:var(--color-danger)}.option-button.incorrect .option-letter{background:var(--color-danger);color:#fff;border-color:var(--color-danger)}.option-button:disabled{cursor:not-allowed;opacity:.6}.option-button.correct:disabled,.option-button.incorrect:disabled{opacity:1}@keyframes slideDown{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.explanation-panel{border:1px solid var(--glass-border);border-radius:var(--radius-md);animation:slideDown var(--transition-normal) forwards;background:#0003;flex-direction:column;gap:1.25rem;padding:1.5rem;display:flex}.explanation-title{color:#fff;align-items:center;gap:.5rem;font-size:1.1rem;font-weight:600;display:flex}.explanation-title svg{width:20px;height:20px}.explanation-title.success-text{color:#20c55d}.explanation-title.danger-text{color:#ef436b}.general-explanation{color:var(--color-text-main);font-size:.98rem;line-height:1.6}.option-breakdowns{border-top:1px solid var(--glass-border);flex-direction:column;gap:.75rem;padding-top:1rem;display:flex}.option-breakdown-item{color:var(--color-text-muted);font-size:.92rem;line-height:1.5}.option-breakdown-item strong{color:var(--color-text-main)}.card-actions{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:1rem;margin-top:.5rem;display:flex}.btn{font-family:var(--font-heading);border-radius:var(--radius-sm);cursor:pointer;transition:all var(--transition-fast);border:none;align-items:center;gap:.5rem;padding:.75rem 1.5rem;font-size:.95rem;font-weight:600;display:flex}.btn-secondary{color:var(--color-text-main);border:1px solid var(--glass-border);background:#ffffff0d}.btn-secondary:hover{border-color:var(--glass-border-hover);background:#ffffff1a}.btn-primary{background:var(--color-primary);color:#fff;box-shadow:0 4px 15px #6366f14d}.btn-primary:hover{background:var(--color-primary-hover);transform:translateY(-1px)}.btn-primary:active{transform:translateY(0)}.btn:disabled{opacity:.5;cursor:not-allowed;transform:none!important}.modal-overlay{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:1000;background:#0f172abf;justify-content:center;align-items:center;padding:1.5rem;animation:.2s ease-out slideDown;display:flex;position:fixed;inset:0}.modal-content{background:var(--bg-secondary);border:1px solid var(--glass-border);border-radius:var(--radius-lg);flex-direction:column;gap:1.25rem;width:100%;max-width:500px;padding:2rem;display:flex;box-shadow:0 20px 25px -5px #00000080}.modal-header{justify-content:space-between;align-items:center;display:flex}.modal-title{color:#fff;font-size:1.25rem}.modal-close{color:var(--color-text-muted);cursor:pointer;background:0 0;border:none;justify-content:center;align-items:center;display:flex}.modal-close:hover{color:#fff}.form-group{flex-direction:column;gap:.5rem;display:flex}.form-label{color:var(--color-text-muted);font-size:.9rem;font-weight:500}.form-textarea{border:1px solid var(--glass-border);border-radius:var(--radius-sm);color:#fff;font-family:var(--font-body);resize:vertical;min-height:100px;transition:border-color var(--transition-fast);background:#0003;outline:none;padding:.75rem 1rem;font-size:.95rem}.form-textarea:focus{border-color:var(--color-primary)}.modal-footer{justify-content:flex-end;gap:.75rem;display:flex}.admin-panel{flex-direction:column;gap:1.5rem;display:flex}.admin-header{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:1rem;display:flex}.admin-title{color:#fff;font-size:1.5rem}.reports-list{flex-direction:column;gap:1rem;display:flex}.report-card{background:var(--glass-bg);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border:1px solid var(--glass-border);border-radius:var(--radius-md);transition:all var(--transition-fast);flex-direction:column;gap:1rem;padding:1.5rem;display:flex;position:relative}.report-card:hover{border-color:var(--glass-border-hover)}.report-meta{color:var(--color-text-muted);justify-content:space-between;align-items:center;font-size:.8rem;display:flex}.report-q-text{color:var(--color-text-muted);border-left:3px solid var(--color-primary);padding-left:.75rem;font-size:.95rem;font-style:italic}.report-comment{color:#fff;border-radius:var(--radius-sm);background:#00000026;border:1px dashed #ffffff0d;padding:.75rem 1rem;font-size:1rem}.report-actions{justify-content:flex-end;display:flex}.btn-danger-text{color:var(--color-danger);border:1px solid var(--color-danger-border);border-radius:var(--radius-sm);font-family:var(--font-heading);cursor:pointer;transition:all var(--transition-fast);background:0 0;padding:.4rem .8rem;font-size:.85rem;font-weight:600}.btn-danger-text:hover{background:var(--color-danger-bg);color:#fff}.empty-state{text-align:center;background:var(--glass-bg);border:1px dashed var(--glass-border);border-radius:var(--radius-lg);color:var(--color-text-muted);flex-direction:column;align-items:center;gap:1rem;padding:4rem 2rem;display:flex}.empty-state svg{width:48px;height:48px;color:var(--color-text-muted);opacity:.5}.spinner{border:3px solid #ffffff1a;border-top:3px solid var(--color-primary);border-radius:50%;width:24px;height:24px;animation:1s linear infinite spin}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.loading-container{justify-content:center;align-items:center;min-height:200px;display:flex}