:root{font-family: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}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media (prefers-color-scheme: light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}*{margin:0;padding:0;box-sizing:border-box}html,body,#root{height:100%;width:100%;overflow:hidden;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}.app{width:100vw;height:100vh;height:100dvh;height:calc(var(--vh, 1vh) * 100);display:flex;overflow:hidden;position:relative}.app.desktop-layout{flex-direction:row}.app.mobile-layout{flex-direction:column}.mobile-hidden{display:none!important}.whiteboard-container{flex:1;min-width:0;height:100vh;height:100dvh;background-color:#fff;position:relative;display:flex;flex-direction:column;overflow:hidden;transition:all .3s ease;order:1}.chat-container{width:min(350px,30vw);min-width:280px;max-width:400px;height:100vh;height:100dvh;display:flex;flex-direction:column;background-color:#fff;border-left:1px solid #e5e7eb;box-sizing:border-box;overflow:hidden;position:relative;flex-shrink:0;transition:all .3s ease;order:2}.chat-container.chat-open{display:flex}.mobile-fullscreen{width:100vw!important;height:100vh!important;height:100dvh!important;max-width:none!important;min-width:none!important;border:none!important;position:relative;flex:none!important;overflow:hidden!important;touch-action:none!important}.mobile-mode-toggle{position:fixed!important;top:20px!important;right:20px!important;width:60px!important;height:60px!important;background:linear-gradient(135deg,#667eea,#764ba2)!important;border:none!important;border-radius:50%!important;color:#fff!important;box-shadow:0 8px 25px #667eea4d!important;cursor:pointer!important;z-index:9999!important;display:flex!important;align-items:center!important;justify-content:center!important;transition:all .3s ease!important;opacity:1!important;visibility:visible!important}.mobile-mode-toggle:hover{transform:translateY(-2px);box-shadow:0 12px 35px #667eea66}.mobile-mode-toggle:active{transform:translateY(0)}.whiteboard-header{background:linear-gradient(90deg,#3b82f6 60%,#06b6d4);color:#fff;padding:1.2rem 2rem 1.2rem 1.5rem;box-shadow:0 4px 18px #3b82f61a;display:flex;align-items:center;gap:.7rem;border-bottom:3px solid #6ee7b7;position:relative;z-index:2;flex-shrink:0}.whiteboard-header h1{margin:0;font-size:1.7rem;font-weight:800;letter-spacing:.03em;display:flex;align-items:center;gap:.5rem;text-shadow:0 2px 8px rgba(0,0,0,.08)}.canvas-container{position:relative;flex:1;background-color:#fff;overflow:hidden}.canvas-stage{cursor:crosshair}@keyframes fadeInSlideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes pulseHighlight{0%{background-color:#3b82f61a}50%{background-color:#3b82f633}to{background-color:#3b82f61a}}.ai-content-new{animation:fadeInSlideUp .5s ease-out}.ai-content-highlight{animation:pulseHighlight 1s ease-in-out}.toolbar{position:absolute;bottom:20px;left:50%;transform:translate(-50%);background-color:#fff;border-radius:16px;box-shadow:0 4px 20px #00000026;padding:16px;display:flex;align-items:center;gap:16px;z-index:1000;max-width:calc(100% - 40px)}.tool-group{display:flex;gap:8px}.tool-button{padding:12px;border-radius:8px;border:none;background-color:transparent;color:#374151;cursor:pointer;transition:all .2s ease;display:flex;align-items:center;justify-content:center}.tool-button:hover{background-color:#0000000d}.tool-button.active{background-color:#3b82f6;color:#fff}.tool-button:disabled{opacity:.5;cursor:not-allowed}.tool-button:disabled:hover{background-color:transparent}.exit-button{padding:8px 16px;background-color:#ef4444;color:#fff;border-radius:8px;border:none;cursor:pointer;font-size:14px;font-weight:500;transition:all .2s ease}.exit-button:hover{background-color:#dc2626}.toolbar-divider{width:1px;height:32px;background-color:#0000001a}.color-picker-section{position:relative}.color-picker-button{width:40px;height:40px;border-radius:8px;border:2px solid #e5e7eb;cursor:pointer;display:flex;align-items:center;justify-content:center;color:#fff;transition:all .2s ease}.color-picker-popup{position:absolute;bottom:60px;left:0;z-index:1001;background:#fff;border-radius:8px;padding:10px;box-shadow:0 4px 20px #00000026}.color-input{width:40px;height:40px;border-radius:8px;border:2px solid #e5e7eb;cursor:pointer}.shapes-panel{position:absolute;bottom:100px;left:50%;transform:translate(-50%);background:#fffffff2;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);padding:12px;border-radius:16px;box-shadow:0 8px 24px #00000026;border:1px solid rgba(255,255,255,.2);display:flex;flex-direction:row;gap:4px;z-index:999;transition:all .2s ease-out;max-width:calc(100% - 40px)}.shapes-panel:after{content:"";position:absolute;top:100%;left:50%;transform:translate(-50%);width:0;height:0;border-left:8px solid transparent;border-right:8px solid transparent;border-top:8px solid rgba(255,255,255,.95);filter:drop-shadow(0 2px 4px rgba(0,0,0,.1))}.shape-button{width:40px;height:40px;background:#f3f4f6;border:1px solid #e5e7eb;border-radius:8px;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:20px;transition:all .2s ease;color:#374151}.shape-button:hover{background:#e5e7eb;transform:translateY(-2px);box-shadow:0 4px 8px #0000001a}.shape-button:active{transform:translateY(0);box-shadow:0 2px 4px #0000001a}.chat-panel{width:100%;height:100%;background-color:#fff;display:flex;flex-direction:column;overflow:hidden}.chat-header{padding:20px;border-bottom:1px solid #e5e7eb;background-color:#f8fafc;flex-shrink:0;position:relative}.chat-close-button{position:absolute;top:15px;right:15px;width:30px;height:30px;background:#f3f4f6;border:none;border-radius:15px;cursor:pointer;display:flex;align-items:center;justify-content:center;color:#6b7280;transition:all .2s ease}.chat-close-button:hover{background:#e5e7eb;color:#374151}.tutor-info{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}.tutor-info h3{margin:0;color:#1f2937;font-size:18px;font-weight:600}.availability-indicator{display:flex;align-items:center;gap:6px;font-size:12px;color:#059669;font-weight:500}.status-dot{width:8px;height:8px;border-radius:50%;background-color:#10b981;animation:pulse 2s infinite}@keyframes pulse{0%{opacity:1}50%{opacity:.5}to{opacity:1}}.chat-header p{margin:0;color:#6b7280;font-size:14px}.system-welcome-message{background:#f8fafc;color:#374151;border-radius:12px;padding:12px 18px;margin:18px 20px 8px;font-size:15px;font-weight:400;box-shadow:0 1px 4px #00000008;border:1px solid #e5e7eb;text-align:left;flex-shrink:0}.chat-messages{flex:1;overflow-y:auto;padding:20px;display:flex;flex-direction:column;gap:16px;min-height:0;-webkit-overflow-scrolling:touch}.message{display:flex;margin-bottom:8px}.user-message{justify-content:flex-end}.ai-message{justify-content:flex-start}.message-content{max-width:80%;padding:12px 16px;border-radius:18px;position:relative}.user-message .message-content{background-color:#3b82f6;color:#fff;border-bottom-right-radius:4px}.ai-message .message-content{background-color:#f3f4f6;color:#1f2937;border-bottom-left-radius:4px}.message-content p{margin:0 0 4px;line-height:1.4;word-wrap:break-word}.message-time{font-size:11px;opacity:.7;display:block}.user-message .message-time{text-align:right}.typing-indicator{display:flex;gap:4px;padding:8px 0}.typing-indicator span{width:8px;height:8px;border-radius:50%;background-color:#9ca3af;animation:typing 1.4s infinite ease-in-out}.typing-indicator span:nth-child(1){animation-delay:-.32s}.typing-indicator span:nth-child(2){animation-delay:-.16s}@keyframes typing{0%,80%,to{transform:scale(.8);opacity:.5}40%{transform:scale(1);opacity:1}}.chat-input-container{padding:20px;border-top:1px solid #e5e7eb;background-color:#fff;display:flex;gap:12px;align-items:center;position:sticky;bottom:0;z-index:100;flex-shrink:0;padding-bottom:calc(20px + env(safe-area-inset-bottom));box-shadow:0 -2px 8px #0000000d}.chat-input{flex:1;padding:12px 16px;border:1px solid #d1d5db;border-radius:24px;font-size:14px;outline:none;transition:border-color .2s ease}.chat-input:focus{border-color:#3b82f6}.chat-input:disabled{background-color:#f9fafb;color:#9ca3af}.send-button{width:44px;height:44px;border-radius:22px;background:linear-gradient(135deg,#6ee7b7,#3b82f6);color:#fff;border:none;display:flex;flex-direction:column;align-items:center;justify-content:center;box-shadow:0 2px 8px #3b82f61a;transition:background .2s,box-shadow .2s;font-size:1.3rem;cursor:pointer;margin-left:6px;padding:0}.send-button svg{font-size:1.5rem;margin-bottom:2px}.send-button-label{font-size:.7rem;color:#e0f2fe;margin-top:0;line-height:1;font-weight:500;letter-spacing:.01em}.send-button:hover:not(:disabled){box-shadow:0 4px 16px #3b82f62e;transform:scale(1.08)}.send-button:disabled{background:#d1d5db;color:#9ca3af;cursor:not-allowed;box-shadow:none}.review-modal-overlay{position:fixed;inset:0;background:#1e293b8c;z-index:1002;display:flex;align-items:center;justify-content:center;opacity:0;animation:reviewOverlayFadeIn .7s forwards}@keyframes reviewOverlayFadeIn{0%{opacity:0}to{opacity:1}}.review-modal-box{background:#fff;border-radius:18px;box-shadow:0 8px 32px #2563eb2e;padding:32px 28px 24px;max-width:380px;width:92vw;text-align:center;display:flex;flex-direction:column;align-items:center;animation:reviewBoxJumpIn .55s cubic-bezier(.22,1,.36,1)}@keyframes reviewBoxJumpIn{0%{opacity:0;transform:scale(.9)}60%{opacity:1;transform:scale(1.05)}80%{transform:scale(.97)}to{opacity:1;transform:scale(1)}}.review-modal-box h2{font-size:1.35rem;font-weight:800;margin-bottom:8px;color:#2563eb}.review-modal-box p{color:#222;font-size:1.08rem;margin-bottom:16px}.review-stars-row{display:flex;gap:4px;margin-bottom:16px;justify-content:center}.review-textarea{width:100%;min-height:80px;border-radius:8px;border:1.5px solid #e5e7eb;padding:10px 12px;font-size:1.08rem;margin-bottom:18px;resize:vertical;font-family:inherit;outline:none;transition:border .2s}.review-textarea:focus{border:1.5px solid #2563eb}.review-modal-actions{display:flex;gap:16px;justify-content:center;width:100%}.review-submit-btn{padding:10px 22px;border-radius:999px;border:none;font-size:1.08rem;font-weight:700;cursor:pointer;transition:background .2s,color .2s;background:linear-gradient(90deg,#2563eb,#22c55e);color:#fff}.review-submit-btn:disabled{background:#e5e7eb;color:#888;cursor:not-allowed}.review-submit-btn:not(:disabled):hover{background:linear-gradient(90deg,#22c55e,#2563eb)}.review-email-input{width:100%;margin-top:10px;margin-bottom:10px;padding:10px 12px;border-radius:8px;border:1.5px solid #e5e7eb;font-size:1.08rem;font-family:inherit;outline:none;transition:border-color .2s ease}.review-email-input:focus{border-color:#3b82f6;box-shadow:0 0 0 3px #3b82f61a}.review-email-input:disabled{background-color:#f9fafb;cursor:not-allowed}.review-success{text-align:center}@media (min-width: 1440px){.chat-container{width:400px;min-width:400px}}@media (min-width: 1024px) and (max-width: 1439px){.chat-container{width:350px;min-width:350px}}@media (min-width: 769px) and (max-width: 1023px){.chat-container{width:min(320px,28vw);min-width:280px}.whiteboard-header h1{font-size:1.4rem}.toolbar{padding:12px;gap:12px}}@media (max-width: 768px){.app{flex-direction:column!important}.chat-toggle-button,.chat-close-button{display:none!important}.mobile-fullscreen .chat-header,.mobile-fullscreen .chat-messages{padding:15px}.mobile-fullscreen .chat-input-container{padding:15px;padding-bottom:calc(15px + env(safe-area-inset-bottom))}.mobile-fullscreen .system-welcome-message{margin:12px 15px 6px;padding:10px 14px;font-size:14px}.chat-input{font-size:16px!important;min-height:44px!important;touch-action:manipulation!important}.send-button{min-width:48px!important;min-height:48px!important;touch-action:manipulation!important}.whiteboard-header{padding:.75rem}.whiteboard-header h1{font-size:1.2rem}.toolbar{bottom:90px;left:10px;right:10px;transform:none;max-width:none;flex-wrap:wrap;justify-content:center;gap:8px;padding:12px}.tool-group{gap:4px}.tool-button{padding:8px}.shapes-panel{bottom:180px;padding:8px;gap:2px}.shape-button{width:36px;height:36px;font-size:18px}}@media (max-width: 480px){.mobile-fullscreen .chat-header{padding:12px}.mobile-fullscreen .chat-messages{padding:12px;gap:12px}.mobile-fullscreen .chat-input-container{padding:12px;padding-bottom:calc(12px + env(safe-area-inset-bottom))}.mobile-fullscreen .system-welcome-message{margin:8px 12px 4px;padding:8px 12px;font-size:13px}.mobile-fullscreen .tutor-info h3{font-size:16px}.mobile-fullscreen .message-content{max-width:85%;font-size:14px;padding:10px 14px}.whiteboard-header h1{font-size:1rem}.toolbar{bottom:80px;left:5px;right:5px;padding:8px;gap:6px}.tool-button{padding:6px}.color-input{width:32px;height:32px}.shapes-panel{bottom:160px;padding:6px}.shape-button{width:32px;height:32px;font-size:16px}@media (max-height: 500px) and (orientation: landscape){.mobile-fullscreen .chat-header,.mobile-fullscreen .chat-messages{padding:8px 12px}.mobile-fullscreen .chat-input-container{padding:8px 12px;padding-bottom:calc(8px + env(safe-area-inset-bottom))}.mobile-fullscreen .system-welcome-message{margin:6px 12px 3px;padding:6px 10px;font-size:12px}.mobile-fullscreen .tutor-info h3{font-size:14px}}.chat-input,.send-button,.mobile-mode-toggle,.chat-toggle-button,.chat-close-button{touch-action:manipulation}.send-button,.chat-header,.availability-indicator,.tool-button,.mobile-mode-toggle,.chat-toggle-button,.chat-close-button{-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none}@supports (height: 100dvh){.app,.chat-container,.chat-panel,.whiteboard-container{height:100dvh;max-height:100dvh}}body{overflow-x:hidden}}.chat-container,.chat-panel{overflow-x:hidden}.ai-indicator{position:absolute;right:20px;top:50%;transform:translateY(-50%);display:flex;align-items:center;gap:8px;background:#3b82f6;color:#fff;padding:8px 12px;border-radius:6px;font-size:14px;animation:aiPulse 2s infinite}.ai-clear-btn{background-color:#f59e0b!important;color:#fff!important}.ai-clear-btn:hover{background-color:#d97706!important}@keyframes aiPulse{0%,to{opacity:1}50%{opacity:.7}}.mobile-mode-toggle .notification-dot{position:absolute;top:8px;right:8px;width:16px;height:16px;background:#ef4444;border:2px solid white;border-radius:50%;animation:pulse-notification 2s infinite;z-index:1}@keyframes pulse-notification{0%{transform:scale(1);box-shadow:0 0 #ef4444b3}70%{transform:scale(1.1);box-shadow:0 0 0 10px #ef444400}to{transform:scale(1);box-shadow:0 0 #ef444400}}.message.whiteboard-message{position:relative}.message.whiteboard-message .message-content{background:linear-gradient(135deg,#f0f9ff,#e0f2fe)!important;border-left:3px solid #3b82f6;box-shadow:0 2px 8px #3b82f61a}.whiteboard-icon{position:absolute;top:-8px;right:-8px;background:#3b82f6;color:#fff;border-radius:50%;width:20px;height:20px;display:flex;align-items:center;justify-content:center;font-size:10px;box-shadow:0 2px 4px #0003}.whiteboard-activity-indicator{position:fixed;top:20px;right:20px;background:linear-gradient(135deg,#3b82f6,#1d4ed8);color:#fff;padding:12px 16px;border-radius:8px;display:flex;align-items:center;gap:8px;font-size:14px;font-weight:500;z-index:1000;box-shadow:0 4px 12px #3b82f64d;animation:slideInFromRight .3s ease-out}@keyframes slideInFromRight{0%{transform:translate(100%);opacity:0}to{transform:translate(0);opacity:1}}.desktop-layout .chat-container{border-left:3px solid #e5e7eb;transition:border-color .3s ease}.desktop-layout .chat-container.has-whiteboard-activity{border-left-color:#3b82f6;box-shadow:-5px 0 15px #3b82f61a}.mobile-layout .chat-header p,.desktop-layout .chat-header p{margin:8px 0 0;font-size:14px;color:#6b7280;font-style:italic}.mobile-fullscreen{transition:transform .3s cubic-bezier(.4,0,.2,1),opacity .3s ease}.mobile-hidden{transform:translate(-100%);opacity:0;pointer-events:none}.chat-input::placeholder{color:#9ca3af;font-style:italic}.chat-input:focus::placeholder{color:#d1d5db}.send-button{background:linear-gradient(135deg,#667eea,#764ba2);position:relative;overflow:hidden}.send-button:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.2),transparent);transition:left .5s ease}.send-button:hover:before{left:100%}@keyframes messageSlideIn{0%{opacity:0;transform:translateY(20px) scale(.95)}to{opacity:1;transform:translateY(0) scale(1)}}.message{animation:messageSlideIn .4s cubic-bezier(.4,0,.2,1)}.availability-indicator{display:flex;align-items:center;gap:6px;font-size:12px;color:#10b981;font-weight:500}.status-dot{width:8px;height:8px;background:#10b981;border-radius:50%;animation:pulse-status 2s infinite}@keyframes pulse-status{0%,to{opacity:1}50%{opacity:.5}}@media (max-width: 768px){.whiteboard-activity-indicator{top:10px;right:10px;left:10px;font-size:13px;padding:10px 14px}.mobile-mode-toggle{width:55px;height:55px;top:15px;right:15px}.notification-dot{width:14px;height:14px;top:6px;right:6px}}@media (max-width: 480px){.system-welcome-message{margin:0 12px 12px;padding:10px 12px;font-size:12px}.chat-header p{font-size:13px}}html,body,#root{height:100%;width:100%;overflow-y:auto;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}.scrollable-main-page{overflow-y:auto;min-height:100vh}.main-page-container{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(120deg,#e0f7fa,#f0fdfa)}.main-page-content{background:transparent;border-radius:0;box-shadow:none;padding:28px 32px 32px;max-width:1100px;width:96vw;margin:16px auto 0;display:flex;flex-direction:column;align-items:center}.main-page-content h1{font-size:2.2rem;font-weight:800;color:#2563eb;margin-bottom:.7em}.main-page-content p{font-size:1.1rem;color:#374151;margin-bottom:2em}.main-page-btn{background:linear-gradient(90deg,#3b82f6 60%,#06b6d4);color:#fff;font-size:1.2rem;font-weight:600;padding:.9em 2.2em;border:none;border-radius:999px;box-shadow:0 2px 12px #3b82f61a;cursor:pointer;transition:background .2s,transform .15s,box-shadow .2s}.main-page-btn:hover{background:linear-gradient(90deg,#06b6d4,#3b82f6);transform:translateY(-2px) scale(1.04);box-shadow:0 6px 24px #3b82f62e}.main-page-sub{font-size:1.1rem;color:#374151;margin-bottom:2em}.main-page-features{margin-top:0;margin-bottom:24px}.main-page-features h2{font-size:1.3rem;color:#2563eb;margin-bottom:1em;font-weight:700;letter-spacing:.01em}.features-list{display:flex;flex-wrap:wrap;gap:1.2em 1.5em;justify-content:center}.feature-item{display:flex;align-items:flex-start;gap:.8em;background:#f0fdfa;border-radius:14px;padding:1em 1.2em;min-width:220px;max-width:260px;box-shadow:0 2px 8px #3b82f60f;margin-bottom:.7em}.feature-icon{font-size:2rem;margin-top:.1em}.feature-title{font-weight:700;color:#2563eb;font-size:1.08rem;margin-bottom:.2em}.feature-desc{color:#374151;font-size:.98rem}.main-page-reviews{margin-top:2.5em}.main-page-reviews h2{font-size:1.2rem;color:#06b6d4;margin-bottom:1.1em;font-weight:700}.reviews-list{display:flex;flex-direction:column;gap:1.2em;align-items:center}.review-item{display:flex;align-items:flex-start;gap:1em;background:#f8fafc;border-radius:14px;padding:1em 1.2em;min-width:260px;max-width:340px;box-shadow:0 2px 8px #3b82f60f}.review-avatar{width:44px;height:44px;border-radius:50%;object-fit:cover;border:2px solid #3b82f6;margin-top:.2em}.review-text{display:flex;flex-direction:column}.review-name{font-weight:700;color:#2563eb;font-size:1.01rem;margin-bottom:.1em}.review-quote{color:#374151;font-size:.97rem;font-style:italic;line-height:1.4}.main-page-reviews-carousel{margin-top:3em;width:100%}.main-page-reviews-carousel h2{font-size:1.2rem;color:#06b6d4;margin-bottom:1.1em;font-weight:700}.review-carousel{display:flex;align-items:center;justify-content:center;gap:2.5em;width:100%;margin:0 auto}.carousel-arrow{background:none;border:none;font-size:2.2rem;color:#3b82f6;cursor:pointer;padding:0 .5em;transition:color .2s;-webkit-user-select:none;user-select:none}.carousel-arrow:hover{color:#06b6d4}.carousel-review-content{max-width:600px;min-width:220px;margin:0 1em;text-align:center}.carousel-quote{font-size:1.25rem;color:#374151;font-style:italic;margin-bottom:1.5em;line-height:1.6}.carousel-reviewer{font-size:1.08rem;color:#2563eb;font-weight:700;letter-spacing:.04em;margin-top:.5em;text-transform:uppercase}.main-page-info-sections{display:flex;justify-content:center;gap:2.5em;margin:2.5em 0;flex-wrap:wrap}.info-section{background:#f0fdfa;border-radius:16px;box-shadow:0 2px 8px #3b82f60f;padding:1.5em 2em;min-width:220px;max-width:320px;margin-bottom:1em;display:flex;flex-direction:column;align-items:flex-start}.info-title{font-size:1.15rem;font-weight:700;color:#2563eb;margin-bottom:.5em}.info-desc{color:#374151;font-size:1.01rem;margin-bottom:1.2em}.info-link{color:#06b6d4;font-weight:600;text-decoration:none;font-size:1rem;border-bottom:1.5px solid #06b6d4;transition:color .2s,border-color .2s}.info-link:hover{color:#3b82f6;border-color:#3b82f6}@media (max-width: 900px){.main-page-content{max-width:98vw;padding:2.2rem .7rem}.carousel-review-content{max-width:90vw}.main-page-info-sections{gap:1.2em}.info-section{min-width:180px;max-width:98vw;padding:1.1em 1em}}@media (max-width: 600px){.main-page-content{padding:1.2rem .2rem;border-radius:0;box-shadow:none}.main-page-features{margin:1.2em 0 1em}.features-list{flex-direction:column;gap:.7em}.feature-item{min-width:0;max-width:100vw;padding:.8em .7em}.main-page-reviews-carousel{margin-top:1.5em}.review-carousel{gap:.5em}.carousel-arrow{font-size:1.5rem;padding:0 .2em}.carousel-quote{font-size:1.05rem;margin-bottom:1em}.carousel-reviewer{font-size:.98rem}.main-page-info-sections{flex-direction:column;align-items:center;gap:.7em;margin:1.2em 0}.info-section{min-width:0;max-width:100vw;padding:.9em .7em;border-radius:10px}}body,.main-page-container{font-family:Inter,Segoe UI,Arial,sans-serif;background:linear-gradient(120deg,#f3f7fd 60%,#e7f6fa)!important;margin:0;padding:0;min-height:100vh}.main-page-container{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:40px 0;background:none}.hero-section{position:relative;width:100vw;max-width:100%;min-height:320px;display:flex;align-items:center;justify-content:center;margin-bottom:36px;background:inherit;overflow:visible}.hero-headline{font-size:2.8rem;font-weight:700;text-align:center;color:#222;z-index:2;margin:0 auto;padding:60px 0 40px;max-width:900px}.hero-float{position:absolute;z-index:1;pointer-events:none;opacity:.95}.hero-float-1{top:32px;left:8vw}.hero-float-2{bottom:38px;left:18vw}.hero-float-3{top:60px;right:16vw}.hero-float-4{bottom:48px;right:14vw}.hero-float-5{top:120px;left:50vw}.chat-bubble{background:#fff;border-radius:18px;box-shadow:0 2px 8px #00000012;padding:10px 22px;font-size:1.08rem;color:#222;border:1.5px solid #e7f0fd;display:inline-block;max-width:220px;font-weight:500}.main-page-content{background:#fff;border-radius:18px;box-shadow:0 8px 32px #3b82f61a;padding:48px 32px 32px;max-width:1100px;width:96vw;margin:40px auto 0;display:flex;flex-direction:column;align-items:center}h1{font-size:2.7rem;font-weight:800;text-align:center;margin-bottom:12px;letter-spacing:-1px}.main-page-sub{font-size:1.25rem;color:#555;text-align:center;margin-bottom:28px;font-weight:400}.main-page-btn{background:#ff7849;color:#fff;font-size:1.15rem;font-weight:600;border:none;border-radius:999px;padding:14px 36px;margin-bottom:36px;cursor:pointer;box-shadow:0 2px 8px #00000012;transition:background .2s}.main-page-btn:hover{background:#ff5a1f}.features-list,.main-page-info-sections{display:flex;flex-wrap:wrap;gap:24px;justify-content:center;width:100%}.feature-item,.info-section{min-width:220px;max-width:340px;flex:1 1 300px;background:#f6faff;border-radius:16px;box-shadow:0 2px 12px #3b82f60f;padding:24px 28px;display:flex;align-items:flex-start;gap:14px;margin-bottom:18px}.feature-title,.info-title{font-weight:700;font-size:1.1rem;margin-bottom:2px;color:#181f2a}.feature-desc,.info-desc{color:#2563eb;font-size:.98rem}.info-link{color:#22c55e;font-weight:600;text-decoration:none;font-size:.97rem;border-radius:999px;padding:2px 12px;background:#e7f0fd;transition:background .2s}.info-link:hover{background:#d0e3fc}.main-page-reviews-carousel{width:100%;margin-top:18px;text-align:center}.review-carousel{display:flex;align-items:center;justify-content:center;gap:18px;margin-top:10px}.carousel-arrow{background:#f6f8fa;border:none;border-radius:50%;width:38px;height:38px;font-size:1.5rem;cursor:pointer;box-shadow:0 2px 8px #0000000a;transition:background .2s;color:#2563eb}.carousel-arrow:hover{background:#e7f0fd}.carousel-review-content{background:#fff;border-radius:14px;box-shadow:0 2px 8px #0000000a;padding:18px 28px;min-width:260px;max-width:420px;display:flex;flex-direction:column;align-items:center}.carousel-quote{font-size:1.08rem;font-style:italic;color:#181f2a;margin-bottom:8px}.carousel-reviewer{font-size:.98rem;color:#2563eb;font-weight:600}.carousel-stars{display:flex;flex-direction:row;justify-content:center;align-items:center;margin-bottom:10px}.carousel-review-content{background:#fff;border-radius:14px;box-shadow:0 2px 8px #0000000a;padding:18px 28px;min-width:260px;max-width:340px;flex:1 1 260px;display:flex;flex-direction:column;align-items:center;margin-bottom:0}@media (max-width: 1000px){.reviews-row{flex-direction:column;gap:18px;align-items:center}.carousel-review-content{max-width:98vw;min-width:0}}.hero-section.soft-blue-bg{background:linear-gradient(120deg,#f3f7fd 60%,#e7f6fa);min-height:340px;width:100vw;max-width:100%;display:flex;align-items:center;justify-content:center;position:relative;margin-bottom:36px;overflow:visible}.hero-content{z-index:2;text-align:center;margin:0 auto}.hero-headline{font-size:2.7rem;font-weight:800;color:#181f2a;margin:0 0 10px;line-height:1.15}.hero-animated-text{color:#2563eb;font-weight:800;font-size:2.2rem;display:inline-block;min-width:220px;transition:opacity .4s}.hero-subheadline{font-size:1.25rem;color:#22c55e;font-weight:600;margin-top:8px;margin-bottom:0}.hero-svg{position:absolute;z-index:1;opacity:.93}.hero-svg-pencil{top:38px;left:12vw}.hero-svg-chat{bottom:38px;left:20vw}.hero-svg-check{top:60px;right:14vw}.hero-svg-bubble{bottom:48px;right:12vw}@keyframes blink{0%,to{opacity:1}50%{opacity:0}}@media (max-width: 1200px){.main-page-content{max-width:98vw;padding:32px 2vw 24px}}@media (max-width: 900px){.hero-section{min-height:220px}.hero-headline{font-size:2rem;padding:36px 0 24px}.hero-float-1,.hero-float-2,.hero-float-3,.hero-float-4,.hero-float-5{display:none}.hero-section.soft-blue-bg{min-height:180px;padding:0 0 12px}.hero-headline{font-size:1.5rem}.hero-animated-text{font-size:1.1rem;min-width:120px}.hero-svg{display:none}.bg-svg-book,.bg-svg-chat,.bg-svg-pencil,.bg-svg-cap,.bg-svg-bulb{width:48px!important;min-width:32px}}@media (max-width: 800px){.main-page-content{padding:24px 6vw;max-width:98vw}.features-list,.main-page-info-sections{flex-direction:column;gap:12px}.feature-item,.info-section{max-width:100%}}.typewriter-cursor{display:inline-block;width:1ch;color:#2563eb;margin-left:2px;animation:blink 1s steps(1) infinite}.content-icons-row{display:flex;justify-content:center;align-items:center;gap:28px;margin-bottom:32px;margin-top:0}.content-icon{width:36px;height:36px;transition:transform .2s,box-shadow .2s;cursor:default}.content-icon:hover{transform:scale(1.12) rotate(-6deg);box-shadow:0 2px 8px #2563eb1a}@media (max-width: 600px){.content-icons-row{gap:14px;margin-bottom:18px}.content-icon{width:26px;height:26px}}.carousel-outer{width:100%;max-width:1100px;overflow:hidden;margin:0 auto;position:relative}.carousel-inner{display:flex;flex-direction:row;transition:transform .4s cubic-bezier(.4,0,.2,1);will-change:transform}.carousel-review-content{min-width:320px;max-width:340px;margin:0 16px}@media (max-width: 1100px){.carousel-review-content{min-width:260px;max-width:98vw;margin:0 6px}}@media (max-width: 900px){.carousel-outer{max-width:98vw}.carousel-review-content{min-width:90vw;max-width:98vw;margin:0 2vw}}.school-subject-row{display:flex;flex-direction:row;align-items:center;justify-content:center;gap:18px;margin:32px 0 24px}.main-select,.cute-select{appearance:none;background:#f0fdfa;border:2px solid #bae6fd;border-radius:16px;padding:12px 24px;font-size:1.1rem;font-weight:500;color:#2563eb;outline:none;margin-right:0;box-shadow:0 2px 8px #3b82f60f;transition:border .2s,box-shadow .2s}.main-select:focus,.cute-select:focus{border:2px solid #2563eb;box-shadow:0 4px 16px #3b82f61a}.cute-go-btn{border-radius:16px;padding:12px 28px;font-size:1.1rem;background:linear-gradient(90deg,#2563eb 60%,#06b6d4);color:#fff;font-weight:700;box-shadow:0 2px 8px #3b82f61a;border:none;cursor:pointer;transition:background .2s,transform .15s,box-shadow .2s;margin-left:0}.cute-go-btn:disabled{opacity:.5;cursor:not-allowed}.cute-go-btn:hover:not(:disabled){background:linear-gradient(90deg,#06b6d4,#2563eb);transform:translateY(-2px) scale(1.04);box-shadow:0 6px 24px #3b82f62e}.main-select,.cute-select{background-image:none!important;padding-right:44px}.select-wrapper{position:relative;display:flex;align-items:center}.select-arrow{position:absolute;right:18px;top:50%;transform:translateY(-50%);pointer-events:none;display:flex;align-items:center;height:100%}.school-subject-row{display:flex;flex-direction:row;align-items:center;justify-content:center;gap:18px;margin:32px 0 24px;min-height:56px}.main-select,.cute-select,.cute-go-btn{height:56px;min-height:56px;font-size:1.15rem;vertical-align:top;box-sizing:border-box;display:inline-flex;align-items:center;padding-top:0;padding-bottom:0;margin:0;line-height:normal}.cute-go-btn{padding:0 36px;font-size:1.15rem;font-weight:700;display:inline-flex;align-items:center;justify-content:center;height:56px;min-height:56px}.select-wrapper{height:56px;display:inline-flex;align-items:center;margin:0}@media (max-width: 600px){.school-subject-row{flex-direction:column;gap:12px;margin:24px 0 16px}.main-select,.cute-select,.cute-go-btn{width:100%;font-size:1rem;padding:10px 16px}}.analytics-dashboard{padding:20px;max-width:1200px;margin:0 auto;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}.dashboard-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:30px}.dashboard-header h2{margin:0;color:#1f2937}.time-selector select{padding:8px 12px;border:1px solid #d1d5db;border-radius:6px;background:#fff;font-size:14px}.summary-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px;margin-bottom:30px}.summary-card{background:#fff;padding:20px;border-radius:8px;border:1px solid #e5e7eb;box-shadow:0 1px 3px #0000001a}.card-title{color:#6b7280;font-size:14px;margin-bottom:8px}.card-value{font-size:24px;font-weight:700;color:#1f2937}.user-stats-section{background:#f9fafb;padding:20px;border-radius:8px;margin-bottom:30px}.user-stats-section h3{margin:0 0 15px;color:#1f2937}.user-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:15px}.stat-item{display:flex;justify-content:space-between;padding:8px 0}.stat-label{color:#6b7280}.stat-value{font-weight:600;color:#1f2937}.daily-breakdown-section{margin-bottom:30px}.daily-breakdown-section h3{margin:0 0 15px;color:#1f2937}.daily-chart{display:flex;align-items:end;height:150px;gap:4px;padding:20px;background:#fff;border:1px solid #e5e7eb;border-radius:8px}.daily-bar{flex:1;display:flex;flex-direction:column;align-items:center;height:100%}.bar{background:#3b82f6;width:100%;min-height:2px;border-radius:2px 2px 0 0;transition:background-color .2s;cursor:pointer}.bar:hover{background:#2563eb}.bar-label{font-size:12px;color:#6b7280;margin-top:4px}.recent-chats-section{background:#fff;border:1px solid #e5e7eb;border-radius:8px;overflow:hidden}.recent-chats-section h3{margin:0;padding:20px;background:#f9fafb;border-bottom:1px solid #e5e7eb;color:#1f2937}.recent-chats-table{display:grid;grid-template-columns:100px 1fr 100px 80px}.table-header{display:contents}.header-cell{padding:12px;background:#f9fafb;border-bottom:1px solid #e5e7eb;font-weight:600;color:#374151;font-size:14px}.table-row{display:contents}.table-cell{padding:12px;border-bottom:1px solid #f3f4f6;font-size:14px;color:#1f2937}.chat-preview{color:#6b7280}.session-id{font-family:monospace;font-size:12px;color:#6b7280}.loading{display:flex;justify-content:center;align-items:center;height:200px}.loading-spinner{color:#6b7280;font-size:16px}@media (max-width: 768px){.analytics-dashboard{padding:15px}.dashboard-header{flex-direction:column;gap:15px;align-items:flex-start}.summary-cards{grid-template-columns:1fr}.recent-chats-table{grid-template-columns:80px 1fr 80px 60px}.daily-chart{padding:15px}}