:root{font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;line-height:1.5;font-weight:400}body{margin:0;min-width:320px;min-height:100vh}*{box-sizing:border-box}:root{--primary-blue: #3b82f6;--light-blue: #dbeafe;--dark-blue: #1e40af;--indigo: #6366f1;--white: #ffffff;--light-gray: #f8fafc;--dark-gray: #1f2937;--shadow: rgba(0, 0, 0, .1);--shadow-lg: rgba(0, 0, 0, .15)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,Segoe UI,Tahoma,Geneva,Verdana,sans-serif;background:linear-gradient(135deg,#dbeafe,#e0e7ff);color:var(--dark-gray);line-height:1.6}.app-container{display:flex;min-height:100vh}.sidebar{width:320px;background:linear-gradient(180deg,var(--white) 0%,var(--light-gray) 100%);padding:0;box-shadow:4px 0 20px var(--shadow-lg);border-right:1px solid #e5e7eb;display:flex;flex-direction:column}.sidebar-header{padding:32px 24px 24px;border-bottom:1px solid #e5e7eb}.sidebar-title{font-size:20px;font-weight:700;color:var(--dark-gray);margin-bottom:4px}.sidebar-subtitle{font-size:14px;color:#6b7280;margin:0}.nav-menu{display:flex;flex-direction:column;gap:8px;padding:24px 16px;flex:1}.nav-item{padding:16px 20px;cursor:pointer;transition:all .3s cubic-bezier(.4,0,.2,1);border-radius:12px;color:var(--dark-gray);display:flex;align-items:center;gap:16px;position:relative;overflow:hidden}.nav-item:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(59,130,246,.1),transparent);transition:left .5s}.nav-item:hover:before{left:100%}.nav-item:hover{background-color:var(--light-blue);color:var(--primary-blue);transform:translate(4px)}.nav-item.active{background:linear-gradient(135deg,var(--primary-blue) 0%,var(--indigo) 100%);color:var(--white);font-weight:600;box-shadow:0 4px 12px #3b82f64d;transform:translate(4px)}.nav-item.active .nav-description{color:#fffc}.nav-icon{font-size:20px;flex-shrink:0}.nav-content{display:flex;flex-direction:column;gap:2px}.nav-label{font-weight:600;font-size:14px}.nav-description{font-size:12px;color:#6b7280;opacity:.8}.main-content{flex:1;background-color:transparent;overflow-y:auto}.header{display:flex;justify-content:space-between;align-items:center;padding:24px 32px;background:#ffffffe6;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid rgba(229,231,235,.5);margin-bottom:0}.logo h1{background:linear-gradient(135deg,var(--primary-blue) 0%,var(--indigo) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;font-size:28px;font-weight:700}.powered-by{font-size:14px;color:var(--dark-gray);opacity:.7;display:flex;align-items:center;gap:8px}.connection-status{display:flex;align-items:center;gap:8px;font-size:12px;padding:4px 8px;border-radius:20px}.connection-status.connected{background-color:#dcfce7;color:#166534}.connection-status.error{background-color:#fef2f2;color:#dc2626}.connection-status.checking{background-color:#fef3c7;color:#d97706}.prompt-container{background:#fffffff2;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:20px;padding:32px;box-shadow:0 8px 32px #0000001a;border:1px solid rgba(255,255,255,.2);margin:24px}.prompt-container h2{background:linear-gradient(135deg,var(--primary-blue) 0%,var(--indigo) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;font-size:24px;font-weight:700;margin-bottom:12px}.description{margin-bottom:24px;color:#6b7280;font-size:16px;line-height:1.6}.input-group{margin-bottom:20px}.input-group label{display:block;margin-bottom:8px;font-weight:600;color:var(--dark-gray);font-size:14px}.prompt-input{width:100%;padding:16px 20px;border:2px solid #e5e7eb;border-radius:12px;font-size:16px;background-color:var(--white);resize:vertical;transition:all .3s ease;font-family:inherit}.prompt-input:focus{outline:none;border-color:var(--primary-blue);box-shadow:0 0 0 3px #3b82f61a}.submit-btn{background:linear-gradient(135deg,var(--primary-blue) 0%,var(--indigo) 100%);color:var(--white);border:none;padding:16px 32px;border-radius:12px;cursor:pointer;font-weight:600;font-size:16px;transition:all .3s cubic-bezier(.4,0,.2,1);box-shadow:0 4px 12px #3b82f64d}.submit-btn:hover{transform:translateY(-2px);box-shadow:0 8px 20px #3b82f666}.submit-btn:active{transform:translateY(0)}.submit-btn:disabled{background:#9ca3af;cursor:not-allowed;opacity:.7;transform:none;box-shadow:none}.response-container{margin-top:24px;padding:24px;background:#ffffffe6;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:16px;border-left:4px solid var(--primary-blue);box-shadow:0 4px 16px #0000001a}.response-container h3{color:var(--primary-blue);margin-bottom:16px;font-weight:600;font-size:18px}.response-content{white-space:pre-wrap;line-height:1.7;color:var(--dark-gray);font-size:15px}.error-message{margin-top:16px;padding:16px;background-color:#fef2f2;border:1px solid #fecaca;border-radius:12px;color:#dc2626;text-align:center;font-weight:500}.spinner{display:inline-block;width:16px;height:16px;border:2px solid rgba(255,255,255,.3);border-top:2px solid white;border-radius:50%;animation:spin 1s linear infinite;margin-right:8px}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.flashcards-container{margin-top:20px;display:flex;flex-direction:column;align-items:center}.flashcard{width:100%;max-width:500px;height:300px;perspective:1000px;cursor:pointer;margin-bottom:20px}.flashcard-inner{position:relative;width:100%;height:100%;text-align:center;transition:transform .6s;transform-style:preserve-3d;box-shadow:0 4px 8px #0000001a;border-radius:10px}.flashcard.flipped .flashcard-inner{transform:rotateY(180deg)}.flashcard-front,.flashcard-back{position:absolute;width:100%;height:100%;-webkit-backface-visibility:hidden;backface-visibility:hidden;display:flex;flex-direction:column;justify-content:center;align-items:center;padding:20px;border-radius:10px}.flashcard-front{background-color:#fff;color:#333;border:2px solid var(--primary-yellow)}.flashcard-back{background-color:var(--primary-yellow);color:#fff;transform:rotateY(180deg)}.flashcard-hint{position:absolute;bottom:10px;font-size:12px;opacity:.7}.flashcard-navigation{display:flex;justify-content:space-between;align-items:center;width:100%;max-width:500px}.card-counter{font-size:14px;color:#666}.nav-btn{background-color:var(--primary-yellow);color:#fff;border:none;padding:8px 16px;border-radius:4px;cursor:pointer;font-size:14px}.nav-btn:disabled{background-color:#ccc;cursor:not-allowed}@media(max-width:768px){.app-container{flex-direction:column}.sidebar{width:100%;height:auto;padding:16px 0}.nav-menu{flex-direction:row;overflow-x:auto;padding:0 16px;gap:12px}.nav-item{min-width:200px;flex-shrink:0}.nav-content{display:none}.nav-item .nav-icon{font-size:24px}.prompt-container{margin:16px;padding:24px}.header{padding:16px 24px}.logo h1{font-size:20px}}@media(max-width:480px){.prompt-container{margin:12px;padding:20px}.submit-btn{width:100%;padding:14px}.header{flex-direction:column;gap:12px;text-align:center}}.nav-item:focus,.submit-btn:focus,.prompt-input:focus{outline:2px solid var(--primary-blue);outline-offset:2px}html{scroll-behavior:smooth}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.response-container,.error-message{animation:fadeIn .3s ease-out}
