:root{--primary-color:#f93;--primary-glow:#ff993380;--bg-gradient-start:#0f172a;--bg-gradient-end:#020617;--surface-color:#1e293bb3;--surface-border:#ffffff1a;--text-primary:#f8fafc;--text-secondary:#94a3b8;--radius-lg:16px;--radius-full:9999px;--transition-smooth:all .3s cubic-bezier(.4, 0, .2, 1)}*{box-sizing:border-box;margin:0;padding:0}body{background:linear-gradient(135deg, var(--bg-gradient-start), var(--bg-gradient-end));color:var(--text-primary);justify-content:center;align-items:center;min-height:100vh;margin:0;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;display:flex}#root{flex-direction:column;width:100%;max-width:600px;height:100vh;display:flex;position:relative;overflow:hidden}.app-container{-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);background:var(--surface-color);border-left:1px solid var(--surface-border);border-right:1px solid var(--surface-border);flex-direction:column;width:100%;height:100%;display:flex;box-shadow:0 25px 50px -12px #00000080}.app-header{text-align:center;border-bottom:1px solid var(--surface-border);z-index:10;justify-content:space-between;align-items:center;padding:1.5rem;display:flex}.app-title{background:linear-gradient(90deg,#f93,#fcd34d);-webkit-text-fill-color:transparent;-webkit-background-clip:text;align-items:center;gap:.5rem;font-size:1.5rem;font-weight:700;display:flex}.history-btn{color:var(--text-secondary);cursor:pointer;border-radius:var(--radius-full);transition:var(--transition-smooth);background:0 0;border:none;justify-content:center;align-items:center;padding:.5rem;display:flex}.history-btn:hover{color:var(--text-primary);background:#ffffff1a}.main-content{flex-direction:column;flex:1;gap:1.5rem;padding:1.5rem;display:flex;overflow-y:auto}.main-content::-webkit-scrollbar{width:6px}.main-content::-webkit-scrollbar-track{background:0 0}.main-content::-webkit-scrollbar-thumb{background:var(--surface-border);border-radius:var(--radius-full)}.welcome-card{text-align:center;border:1px solid var(--surface-border);border-radius:var(--radius-lg);background:#ffffff08;margin-bottom:1rem;padding:2rem}.welcome-icon{color:var(--primary-color);margin-bottom:1rem;font-size:3rem}.welcome-text{color:var(--text-secondary);line-height:1.6}.message-bubble{border-radius:var(--radius-lg);word-wrap:break-word;max-width:85%;padding:1rem 1.25rem;line-height:1.5;animation:.3s ease-out fadeIn}.message-user{background:var(--primary-color);color:#fff;border-bottom-right-radius:4px;align-self:flex-end}.message-guru{border:1px solid var(--surface-border);background:#ffffff1a;border-bottom-left-radius:4px;align-self:flex-start}.message-guru p{margin-bottom:.75rem}.message-guru p:last-child{margin-bottom:0}.input-area{border-top:1px solid var(--surface-border);background:#0003;align-items:center;gap:1rem;padding:1rem 1.5rem;display:flex}.text-input{border:1px solid var(--surface-border);border-radius:var(--radius-full);color:var(--text-primary);transition:var(--transition-smooth);background:#ffffff0d;flex:1;padding:.75rem 1.25rem;font-size:1rem}.text-input:focus{border-color:var(--primary-color);box-shadow:0 0 0 2px var(--primary-glow);outline:none}.send-btn,.mic-btn{background:var(--primary-color);color:#fff;border-radius:var(--radius-full);cursor:pointer;width:3rem;height:3rem;transition:var(--transition-smooth);border:none;flex-shrink:0;justify-content:center;align-items:center;display:flex}.send-btn:hover{background:#f97316;transform:scale(1.05)}.send-btn:disabled{opacity:.5;cursor:not-allowed;transform:none}.mic-btn.recording{background:#ef4444;animation:1.5s infinite pulseMic}.history-item{border:1px solid var(--surface-border);border-radius:var(--radius-lg);transition:var(--transition-smooth);background:#ffffff08;margin-bottom:1rem;padding:1.25rem}.history-item:hover{background:#ffffff0f}.history-date{color:var(--text-secondary);align-items:center;gap:.5rem;margin-bottom:.5rem;font-size:.8rem;display:flex}.history-q{color:var(--text-primary);margin-bottom:.5rem;font-weight:600}.history-a{color:var(--text-secondary);-webkit-line-clamp:3;-webkit-box-orient:vertical;font-size:.95rem;line-height:1.5;display:-webkit-box;overflow:hidden}.history-empty{text-align:center;color:var(--text-secondary);padding:3rem}.typing-indicator{border-radius:var(--radius-full);background:#ffffff0d;align-self:flex-start;gap:.4rem;width:fit-content;padding:.5rem 1rem;display:flex}.typing-dot{background:var(--text-secondary);border-radius:50%;width:8px;height:8px;animation:1.4s ease-in-out infinite both typingBounce}.typing-dot:first-child{animation-delay:-.32s}.typing-dot:nth-child(2){animation-delay:-.16s}@keyframes typingBounce{0%,80%,to{transform:scale(0)}40%{transform:scale(1)}}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes pulseMic{0%{box-shadow:0 0 #ef4444b3}70%{box-shadow:0 0 0 15px #ef444400}to{box-shadow:0 0 #ef444400}}.message-controls{justify-content:flex-end;margin-top:.5rem;display:flex}.tts-btn{color:var(--text-secondary);cursor:pointer;transition:var(--transition-smooth);background:0 0;border:none;align-items:center;gap:.25rem;font-size:.8rem;display:flex}.tts-btn:hover{color:var(--primary-color)}