:root{--text-primary: #ffffff;--text-secondary: rgba(255, 255, 255, .7);--accent-blue: #4cc9f0;--accent-indigo: #4361ee;--glass-bg: rgba(255, 255, 255, .05);--glass-border: rgba(255, 255, 255, .1)}.app-container{min-height:100vh;background:radial-gradient(circle at top right,#1a1a2e,#16213e,#0f3460);color:var(--text-primary);display:flex;flex-direction:column;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}.glass-header{display:flex;justify-content:space-between;align-items:center;padding:1rem 2rem;background:var(--glass-bg);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--glass-border);position:sticky;top:0;z-index:100}.header-left{display:flex;align-items:center;gap:1rem}.mobile-menu-btn{display:none;background:transparent;border:none;color:#fff;cursor:pointer;padding:.5rem;display:flex;align-items:center;justify-content:center}.logo-section{display:flex;align-items:center;gap:.75rem}.logo-icon{color:var(--accent-blue)}.logo-section h1{font-size:1.5rem;font-weight:700;margin:0;background:linear-gradient(to right,var(--accent-blue),var(--accent-indigo));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.main-nav{display:flex;gap:1.5rem;position:absolute;left:50%;transform:translate(-50%)}.nav-item{display:flex;align-items:center;gap:.5rem;padding:.6rem 1.2rem;border-radius:12px;border:none;background:transparent;color:var(--text-secondary);cursor:pointer;transition:all .3s ease;font-size:1.1rem;font-weight:600}.nav-item:hover{background:#ffffff1a;color:#fff}.nav-item.active{background:#4cc9f026;color:var(--accent-blue);box-shadow:0 0 20px #4cc9f033}.content-area{flex:1;padding:2rem;max-width:1200px;margin:0 auto;width:100%;box-sizing:border-box}.feature-card{background:#ffffff08;border:1px solid var(--glass-border);border-radius:24px;padding:2rem;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.card-inner{background:#0003;border-radius:16px;padding:1.5rem;margin-bottom:1.5rem}.search-box{display:flex;gap:.75rem;margin-bottom:2rem;max-width:800px;margin-left:auto;margin-right:auto;width:100%;box-sizing:border-box}.search-box input{flex:1;background:#ffffff0d;border:1px solid var(--glass-border);border-radius:16px;padding:1rem 1.5rem;color:#fff;font-size:1rem;outline:none;transition:all .2s}.search-box input:focus{border-color:var(--accent-blue);background:#ffffff14}.search-box button{background:linear-gradient(135deg,var(--accent-blue),var(--accent-indigo));border:none;border-radius:16px;width:64px;height:64px;display:flex;align-items:center;justify-content:center;color:#fff;cursor:pointer;transition:transform .2s;flex-shrink:0}.search-box button svg{width:36px!important;height:36px!important}.search-box button:hover{transform:scale(1.05)}.table-container{margin-top:2rem;overflow-x:auto;border-radius:16px;border:1px solid var(--glass-border)}table{width:100%;border-collapse:collapse;background:#0003}th{background:#ffffff0d;padding:1rem;text-align:left;font-weight:600;color:var(--accent-blue);border-bottom:1px solid var(--glass-border)}td{padding:1.2rem 1rem;border-bottom:1px solid rgba(255,255,255,.05);color:var(--text-secondary)}tr:hover{background:#ffffff05}.selected-row{background:#4cc9f01a!important}.selected-row td{color:#fff}.primary-btn,.secondary-btn,.save-btn{display:flex;align-items:center;justify-content:center;gap:.5rem;padding:.8rem 1.5rem;border-radius:12px;font-weight:600;cursor:pointer;transition:all .2s;border:none}.primary-btn{background:linear-gradient(135deg,var(--accent-blue),var(--accent-indigo));color:#fff}.secondary-btn{background:#ffffff1a;color:#fff;border:1px solid var(--glass-border)}.primary-btn:hover,.secondary-btn:hover{transform:translateY(-2px);box-shadow:0 5px 15px #0000004d}.primary-btn:disabled,.secondary-btn:disabled{opacity:.5;cursor:not-allowed;transform:none}.actions{display:flex;gap:1rem;margin-top:1.5rem}.settings-container{max-width:800px;margin:0 auto}.sync-section{display:flex;justify-content:space-between;align-items:center;margin-bottom:2rem}.sync-info{display:flex;align-items:center;gap:1.5rem}.sync-info h3{margin:0 0 .5rem}.sync-info p{margin:0;color:var(--text-secondary);font-size:.9rem}.sync-btns{display:flex;align-items:center;gap:1rem}.sync-btn{display:flex;align-items:center;gap:.5rem;padding:.6rem 1rem;background:#ffffff0d;border:1px solid var(--glass-border);border-radius:8px;color:#fff;cursor:pointer;transition:all .2s}.sync-btn:hover{background:#ffffff1a}.input-group{margin-bottom:1.5rem}.input-group label{display:flex;align-items:center;gap:.5rem;margin-bottom:.5rem;color:var(--accent-blue);font-weight:600}.input-group input{width:100%;background:#0003;border:1px solid var(--glass-border);border-radius:12px;padding:1rem;color:#fff;font-size:1rem;box-sizing:border-box}.input-group.disabled input{opacity:.7;cursor:not-allowed;background:#0000001a}.settings-actions{display:flex;justify-content:flex-end;margin-top:2rem}.logout-btn-text{background:transparent;border:none;color:#ff4d4d;cursor:pointer;font-size:.9rem;padding:.5rem}.user-profile-relative{position:relative}.user-avatar-wrapper{cursor:pointer;transition:transform .2s}.circular-avatar{width:36px;height:36px;border-radius:50%;border:2px solid var(--accent-blue);object-fit:cover}.user-dropdown-menu{position:absolute;top:calc(100% + 12px);right:0;min-width:240px;background:#1a1a2e;border:1px solid var(--glass-border);border-radius:16px;box-shadow:0 10px 40px #0009;z-index:1000;overflow:hidden}.menu-header{padding:1.2rem;border-bottom:1px solid var(--glass-border);background:#ffffff05}.user-name{font-weight:700;margin:0;color:#fff}.user-email{font-size:.85rem;color:var(--text-secondary);margin:4px 0 0}.menu-item{width:100%;padding:1rem 1.2rem;display:flex;align-items:center;gap:12px;background:transparent;border:none;color:var(--text-secondary);cursor:pointer;transition:all .2s;text-align:left}.menu-item:hover{background:#ffffff0d;color:#fff}.menu-item.logout{color:#ff4d4d;border-top:1px solid var(--glass-border)}.quiz-start{display:flex;justify-content:center;margin:2rem 0}.quiz-header{text-align:center;margin-bottom:2.5rem;display:flex;flex-direction:column;align-items:center;width:100%}.quiz-header h2{margin-bottom:.5rem}.quiz-header p{color:var(--text-secondary);max-width:80%}.start-quiz-btn{padding:1rem 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rgba(255,255,255,.05)}.drawer-nav{padding:1rem;flex:1;display:flex;flex-direction:column;gap:.5rem}.drawer-item{display:flex;align-items:center;gap:1.25rem;padding:1.1rem;border-radius:12px;border:none;background:transparent;color:var(--text-secondary);cursor:pointer;transition:all .2s;font-size:1.25rem;font-weight:600}.drawer-item.active{background:#4cc9f026;color:var(--accent-blue)}.drawer-footer{padding:1.5rem;border-top:1px solid rgba(255,255,255,.05);background:#0003}.drawer-user-info{display:flex;align-items:center;gap:10px;margin-bottom:1rem}.circular-avatar-small{width:32px;height:32px;border-radius:50%;border:1px solid var(--accent-blue)}.user-name-small{font-size:.85rem;font-weight:600;margin:0}.user-email-small{font-size:.75rem;color:#ffffff80;margin:0}.drawer-logout-btn{width:100%;display:flex;align-items:center;justify-content:center;gap:8px;padding:.75rem;border-radius:10px;background:#ff4d4d1a;border:1px solid rgba(255,77,77,.3);color:#ff4d4d;cursor:pointer}.menu-overlay{position:fixed;top:0;left:0;width:100vw;height:100vh;background:#0009;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:1000;opacity:0;visibility:hidden;transition:.3s}.menu-overlay.open{opacity:1;visibility:visible}.markdown-body{line-height:1.6}.markdown-body p{margin-bottom:1rem}.markdown-body strong{color:var(--accent-blue)}.markdown-body code{background:#ffffff1a;padding:.2rem .4rem;border-radius:4px}.spin{animation:spin 1s linear infinite}.animate-fade-in{animation:fadeIn .3s ease-out}@media (max-width: 768px){.glass-header{padding:.75rem 1rem}.mobile-menu-btn{display:flex}.desktop-only{display:none!important}.content-area{padding:1rem}.feature-card{padding:1.5rem}.table-container{margin:0 -1rem;width:calc(100% + 2rem)}table{min-width:600px}.actions{flex-direction:column}.actions button{width:100%}.sync-section{flex-direction:column;align-items:flex-start;gap:1rem}.search-box{gap:.5rem;padding:0 .5rem}.search-box input{padding:.8rem 1rem;font-size:.9rem;min-width:0}.search-box button{width:60px;height:60px;flex-shrink:0;display:flex;align-items:center;justify-content:center}.search-box button svg{width:32px!important;height:32px!important}.main-nav{position:static;transform:none}}.footer-info{padding:1.5rem;text-align:center;color:#fff6;font-size:.875rem}:root{font-family:Inter,system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{margin:0;min-width:320px;min-height:100vh;overflow-x:hidden}.feature-card{background:#ffffff0d;backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid rgba(255,255,255,.1);border-radius:24px;padding:2rem;box-shadow:0 10px 40px #0000004d}.error-message{display:flex;align-items:center;gap:.75rem;background:#ff46461a;border:1px solid rgba(255,70,70,.3);color:#ff4d4d;padding:1rem;border-radius:12px;margin-bottom:2rem}.search-box{display:flex;background:#ffffff14;border-radius:16px;padding:.5rem;margin-bottom:2rem;border:1px solid rgba(255,255,255,.1);transition:all .3s}.search-box:focus-within{border-color:#4cc9f0;box-shadow:0 0 15px #4cc9f04d}.search-box input{flex:1;background:transparent;border:none;padding:.8rem 1rem;color:#fff;font-size:1.1rem;outline:none}.search-box button{background:#4cc9f0;color:#1a1a2e;border:none;border-radius:12px;padding:0 1.5rem;cursor:pointer;transition:all .2s}.search-box button:hover{background:#48bfe3;transform:translateY(-2px)}.search-box button:disabled{background:#4cc9f080;cursor:not-allowed;transform:none}.table-container{margin-top:1.5rem;overflow-x:auto}table{width:100%;border-collapse:collapse;background:#ffffff08;border-radius:12px;overflow:hidden}th{background:#ffffff1a;padding:1rem;text-align:left;font-weight:600;color:#4cc9f0}td{padding:1rem;border-bottom:1px solid rgba(255,255,255,.05);color:#fffc}td.center{text-align:center}tr:last-child td{border-bottom:none}.actions{display:flex;justify-content:flex-end;margin-top:1.5rem}.export-btn{display:flex;align-items:center;gap:.5rem;background:#4361ee;color:#fff;border:none;border-radius:10px;padding:.8rem 1.2rem;cursor:pointer;font-weight:500;transition:all .2s}.export-btn:hover{background:#3a56d4;box-shadow:0 5px 15px #4361ee66}.settings-header{display:flex;align-items:center;gap:1rem;margin-bottom:2rem}.save-badge{display:flex;align-items:center;gap:.5rem;background:#0f83;color:#0f8;padding:.4rem .8rem;border-radius:20px;font-size:.85rem;font-weight:600;border:1px solid rgba(0,255,136,.3)}.input-group.disabled{opacity:.6;pointer-events:none}.input-group.disabled input{background:#ffffff0d;border-color:transparent;color:#ffffff80}.settings-actions{margin-top:2rem;display:flex;justify-content:flex-end}.settings-form{display:flex;flex-direction:column;gap:1.5rem;max-width:600px;margin:0 auto}.input-group{display:flex;flex-direction:column;gap:.5rem}.input-group label{display:flex;align-items:center;gap:.5rem;font-size:.9rem;color:#fff9}.input-group input{background:#ffffff0d;border:1px solid rgba(255,255,255,.1);border-radius:12px;padding:1rem;color:#fff;outline:none;transition:all .2s}.input-group input:focus{border-color:#4cc9f0}.save-btn{align-self:flex-end;display:flex;align-items:center;gap:.5rem;background:#4cc9f0;color:#1a1a2e;border:none;border-radius:12px;padding:1rem 2rem;font-weight:600;cursor:pointer;transition:all .2s}.save-btn:hover{transform:translateY(-2px);box-shadow:0 5px 20px #4cc9f066}.hint{font-size:.8rem;color:#fff6;margin-top:.25rem}.primary-btn{display:flex;align-items:center;gap:.5rem;background:#4cc9f0;color:#1a1a2e;border:none;border-radius:12px;padding:.8rem 1.5rem;font-weight:600;cursor:pointer;transition:all .2s}.primary-btn:hover{transform:translateY(-2px);box-shadow:0 5px 20px #4cc9f066}.secondary-btn{display:flex;align-items:center;gap:.5rem;background:#ffffff1a;color:#fff;border:1px solid rgba(255,255,255,.1);border-radius:12px;padding:.8rem 1.5rem;font-weight:500;cursor:pointer;transition:all .2s}.secondary-btn:hover{background:#fff3}.card-inner{background:#0003;padding:1.5rem;border-radius:16px;margin-bottom:1.5rem}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.animate-fade-in{animation:fadeIn .5s ease-out forwards}.question-text{font-size:1.4rem;margin:2rem 0;text-align:center;color:#fff}.options-grid{display:grid;grid-template-columns:1fr;gap:1rem}.option-btn{background:#ffffff0d;border:1px solid rgba(255,255,255,.1);padding:1.2rem;border-radius:12px;color:#fff;text-align:left;cursor:pointer;transition:all .2s;font-size:1rem}.option-btn:hover:not(:disabled){background:#4cc9f01a;border-color:#4cc9f0}.feedback-area{margin-top:2rem;padding:1.5rem;border-radius:16px;background:#ffffff0d}.feedback-area.correct{border-left:4px solid #00ff88}.feedback-area.incorrect{border-left:4px solid #ff4d4d}.feedback-status{display:flex;align-items:center;gap:.5rem;font-weight:700;letter-spacing:1px;margin-bottom:.5rem}.next-btn{margin-top:1rem;background:#4361ee;color:#fff;border:none;padding:.8rem 1.5rem;border-radius:8px;cursor:pointer}.spin{animation:spin 2s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}