:root{--bg-primary: #0a0a0f;--bg-secondary: #111118;--bg-card: #16161f;--bg-card-hover: #1c1c28;--border: #23233a;--border-light: #2a2a45;--text-primary: #e8e8f0;--text-secondary: #9898b0;--text-muted: #686885;--accent: #6366f1;--accent-light: #818cf8;--accent-glow: rgba(99, 102, 241, .15);--accent-glow-strong: rgba(99, 102, 241, .3);--success: #22c55e;--success-glow: rgba(34, 197, 94, .15);--danger: #ef4444;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-xl: 20px;--shadow-sm: 0 2px 8px rgba(0, 0, 0, .3);--shadow-md: 0 4px 20px rgba(0, 0, 0, .4);--shadow-lg: 0 8px 40px rgba(0, 0, 0, .5);--transition: .2s ease;--transition-slow: .4s cubic-bezier(.4, 0, .2, 1);font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;line-height:1.6;font-weight:400;color:var(--text-primary);background-color:var(--bg-primary);font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;-webkit-tap-highlight-color:transparent}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{margin:0;min-height:100dvh;min-height:100vh;overflow-x:hidden}#root{min-height:100dvh;min-height:100vh}button{font-family:inherit;cursor:pointer;border:none;outline:none;-webkit-tap-highlight-color:transparent}input,textarea{font-family:inherit;-webkit-tap-highlight-color:transparent}::-webkit-scrollbar{width:4px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border);border-radius:2px}.loading-screen{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100dvh;gap:16px;background:var(--bg-primary)}.loader{width:36px;height:36px;border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}.loading-text{color:var(--text-secondary);font-size:14px;font-weight:500;letter-spacing:.5px}@keyframes spin{to{transform:rotate(360deg)}}.submit-overlay{position:fixed;inset:0;z-index:9999;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;background:#0a0a0fe6;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);color:var(--text-primary);font-size:15px;font-weight:500}.fade-in{animation:fadeIn .5s ease forwards}@keyframes fadeIn{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}.app{min-height:100dvh;min-height:100vh;position:relative}.login-screen{position:relative;min-height:100dvh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:24px 20px;overflow:hidden;background:var(--bg-primary)}.grid-bg{position:absolute;inset:0;overflow:hidden;opacity:.06}.grid-line{position:absolute;background:var(--accent);animation:gridPulse 8s ease-in-out infinite}.grid-line:nth-child(odd){width:1px;height:100%;left:calc(var(--i, 0) * 5%)}.grid-line:nth-child(2n){height:1px;width:100%;top:calc(var(--i, 0) * 5%)}.grid-line:nth-child(1){left:5%}.grid-line:nth-child(2){top:8%}.grid-line:nth-child(3){left:15%}.grid-line:nth-child(4){top:16%}.grid-line:nth-child(5){left:25%}.grid-line:nth-child(6){top:24%}.grid-line:nth-child(7){left:35%}.grid-line:nth-child(8){top:32%}.grid-line:nth-child(9){left:45%}.grid-line:nth-child(10){top:40%}.grid-line:nth-child(11){left:55%}.grid-line:nth-child(12){top:48%}.grid-line:nth-child(13){left:65%}.grid-line:nth-child(14){top:56%}.grid-line:nth-child(15){left:75%}.grid-line:nth-child(16){top:64%}.grid-line:nth-child(17){left:85%}.grid-line:nth-child(18){top:72%}.grid-line:nth-child(19){left:95%}.grid-line:nth-child(20){top:80%}@keyframes gridPulse{0%,to{opacity:.3}50%{opacity:1}}.particles{position:absolute;inset:0;overflow:hidden;pointer-events:none}.particle{position:absolute;width:4px;height:4px;background:var(--accent);border-radius:50%;opacity:.3;animation:particleFloat linear infinite}@keyframes particleFloat{0%{transform:translateY(0) scale(1);opacity:0}10%{opacity:.4}90%{opacity:.4}to{transform:translateY(-100vh) scale(.5);opacity:0}}.login-container{position:relative;z-index:1;max-width:380px;width:100%;text-align:center;animation:fadeIn .8s ease forwards}.login-badge{display:inline-block;padding:6px 16px;background:var(--accent-glow);border:1px solid rgba(99,102,241,.25);border-radius:100px;font-size:11px;font-weight:600;letter-spacing:2px;color:var(--accent-light);margin-bottom:28px}.login-logo{color:var(--accent);margin-bottom:20px;animation:logoPulse 3s ease-in-out infinite}@keyframes logoPulse{0%,to{opacity:1;filter:drop-shadow(0 0 8px var(--accent-glow-strong))}50%{opacity:.8;filter:drop-shadow(0 0 20px var(--accent-glow-strong))}}.login-title{font-size:28px;font-weight:700;color:var(--text-primary);margin-bottom:12px;letter-spacing:-.5px}.login-subtitle{font-size:14px;line-height:1.7;color:var(--text-secondary);margin-bottom:32px;font-weight:400}.login-divider{display:flex;align-items:center;gap:12px;margin-bottom:20px}.login-divider:before,.login-divider:after{content:"";flex:1;height:1px;background:var(--border)}.login-divider span{font-size:12px;color:var(--text-muted);font-weight:500;letter-spacing:.5px;white-space:nowrap}.google-signin-btn{display:flex;align-items:center;justify-content:center;gap:12px;width:100%;padding:14px 24px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);color:var(--text-primary);font-size:15px;font-weight:500;transition:all var(--transition);box-shadow:var(--shadow-sm)}.google-signin-btn:hover{background:var(--bg-card-hover);border-color:var(--border-light);transform:translateY(-1px);box-shadow:var(--shadow-md)}.google-signin-btn:active{transform:translateY(0)}.login-note{margin-top:24px;font-size:12px;color:var(--text-muted);line-height:1.6}.login-footer{position:absolute;bottom:24px;left:0;right:0;text-align:center;z-index:1}.login-footer span{font-size:11px;color:var(--text-muted);letter-spacing:1.5px;font-weight:500;text-transform:uppercase;opacity:.5}.survey-screen{min-height:100dvh;display:flex;flex-direction:column;background:var(--bg-primary)}.survey-header{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;background:var(--bg-secondary);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100}.survey-header-left,.survey-header-right{flex:1}.survey-header-right{display:flex;justify-content:flex-end}.survey-header-center{text-align:center}.survey-user-info{display:flex;align-items:center;gap:8px}.survey-avatar{width:32px;height:32px;border-radius:50%;object-fit:cover;border:2px solid var(--border)}.survey-avatar-placeholder{width:32px;height:32px;border-radius:50%;background:var(--accent-glow);color:var(--accent);display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:600}.survey-user-name{font-size:13px;font-weight:500;color:var(--text-secondary)}.survey-qn-counter{font-size:13px;font-weight:600;color:var(--text-primary);background:var(--bg-card);padding:4px 12px;border-radius:100px;border:1px solid var(--border)}.btn-logout{font-size:12px;font-weight:500;color:var(--text-muted);background:none;padding:6px 12px;border-radius:var(--radius-sm);transition:all var(--transition)}.btn-logout:hover{color:var(--danger);background:#ef44441a}.progress-track{width:100%;height:3px;background:var(--bg-card)}.progress-fill{height:100%;background:linear-gradient(90deg,var(--accent),var(--accent-light));transition:width var(--transition-slow);border-radius:0 2px 2px 0;box-shadow:0 0 12px var(--accent-glow-strong)}.survey-main{flex:1;display:flex;flex-direction:column;align-items:center;padding:20px 16px 24px;max-width:560px;width:100%;margin:0 auto}.question-card{width:100%;animation:slideIn .3s ease forwards}.question-card.slide-out-next{animation:slideOutLeft .25s ease forwards}.question-card.slide-out-prev{animation:slideOutRight .25s ease forwards}.question-card.slide-in{animation:slideIn .3s ease forwards}@keyframes slideIn{0%{opacity:0;transform:translate(20px)}to{opacity:1;transform:translate(0)}}@keyframes slideOutLeft{0%{opacity:1;transform:translate(0)}to{opacity:0;transform:translate(-20px)}}@keyframes slideOutRight{0%{opacity:1;transform:translate(0)}to{opacity:0;transform:translate(20px)}}.question-number{font-size:11px;font-weight:600;letter-spacing:1.5px;color:var(--accent);text-transform:uppercase;margin-bottom:8px}.question-text{font-size:18px;font-weight:600;color:var(--text-primary);line-height:1.5;margin-bottom:24px;letter-spacing:-.2px}.options-list{display:flex;flex-direction:column;gap:10px;margin-bottom:20px}.option-btn{display:flex;align-items:center;gap:12px;width:100%;padding:14px 16px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);color:var(--text-primary);font-size:14px;font-weight:400;text-align:left;transition:all var(--transition);position:relative;overflow:hidden}.option-btn:before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,var(--accent-glow),transparent);opacity:0;transition:opacity var(--transition)}.option-btn:hover{border-color:var(--border-light);background:var(--bg-card-hover)}.option-btn:hover:before{opacity:.5}.option-btn.selected{border-color:var(--accent);background:var(--accent-glow);box-shadow:0 0 0 1px var(--accent),0 2px 12px var(--accent-glow)}.option-btn.selected:before{opacity:1}.option-letter{display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:8px;background:var(--bg-secondary);border:1px solid var(--border);font-size:12px;font-weight:600;color:var(--text-secondary);flex-shrink:0;transition:all var(--transition);position:relative;z-index:1}.option-btn.selected .option-letter{background:var(--accent);border-color:var(--accent);color:#fff}.option-text{flex:1;position:relative;z-index:1;line-height:1.4}.option-check{color:var(--accent);font-size:16px;font-weight:700;position:relative;z-index:1;animation:checkPop .3s ease}@keyframes checkPop{0%{transform:scale(0)}50%{transform:scale(1.3)}to{transform:scale(1)}}.opinion-section{margin-top:4px}.opinion-label{display:block;font-size:12px;font-weight:500;color:var(--text-muted);margin-bottom:6px;letter-spacing:.3px}.opinion-input{width:100%;padding:12px 14px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);color:var(--text-primary);font-size:14px;line-height:1.5;resize:vertical;transition:border-color var(--transition);min-height:56px}.opinion-input::placeholder{color:var(--text-muted)}.opinion-input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-glow)}.survey-nav{display:flex;gap:12px;margin-top:28px;width:100%}.nav-btn{flex:1;padding:14px 20px;border-radius:var(--radius-md);font-size:14px;font-weight:600;transition:all var(--transition)}.nav-prev{background:var(--bg-card);border:1px solid var(--border);color:var(--text-secondary)}.nav-prev:hover:not(:disabled){background:var(--bg-card-hover);color:var(--text-primary)}.nav-next{background:var(--accent);color:#fff;box-shadow:0 2px 12px var(--accent-glow-strong)}.nav-next:hover:not(:disabled){background:var(--accent-light);transform:translateY(-1px)}.nav-submit{background:var(--success);color:#fff;box-shadow:0 2px 12px var(--success-glow)}.nav-submit:hover:not(:disabled){background:#16a34a;transform:translateY(-1px)}.nav-btn:disabled{opacity:.35;cursor:not-allowed;transform:none}.question-dots{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;margin-top:24px;padding:0 8px}.dot{width:10px;height:10px;border-radius:50%;background:var(--border);border:none;padding:0;transition:all var(--transition)}.dot.answered{background:var(--accent);opacity:.5}.dot.active{background:var(--accent);opacity:1;transform:scale(1.3);box-shadow:0 0 8px 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rotate(0);opacity:1}}.thankyou-title{font-size:28px;font-weight:700;color:var(--text-primary);margin-bottom:12px}.thankyou-subtitle{font-size:14px;line-height:1.7;color:var(--text-secondary);margin-bottom:32px}.thankyou-actions{display:flex;flex-direction:column;gap:12px}.btn-feedback{padding:14px 24px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);color:var(--text-primary);font-size:14px;font-weight:500;transition:all var(--transition)}.btn-feedback:hover{background:var(--bg-card-hover);border-color:var(--accent)}.btn-redirect{padding:14px 24px;background:var(--accent);border-radius:var(--radius-md);color:#fff;font-size:14px;font-weight:600;transition:all var(--transition);box-shadow:0 2px 12px var(--accent-glow-strong)}.btn-redirect:hover{background:var(--accent-light);transform:translateY(-1px)}.feedback-section{text-align:left}.feedback-label{display:block;font-size:13px;font-weight:500;color:var(--text-secondary);margin-bottom:8px}.feedback-input{width:100%;padding:14px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);color:var(--text-primary);font-size:14px;line-height:1.5;resize:vertical;transition:border-color var(--transition);min-height:100px}.feedback-input::placeholder{color:var(--text-muted)}.feedback-input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-glow)}.feedback-actions{margin-top:16px;display:flex;justify-content:flex-end}.feedback-actions .btn-redirect{width:100%}@media(min-width:480px){.question-text{font-size:20px}.login-title{font-size:32px}.option-btn{padding:16px 18px}}