:root{--primary: #6495ED;--primary-hover: #5080dd;--bg-dark: #141423;--bg-light: #fafafa;--glass-bg: rgba(20, 20, 35, .6);--glass-bg-light: rgba(255, 255, 255, .8);--glass-border: rgba(255, 255, 255, .1);--glass-border-light: rgba(0, 0, 0, .1);--text-primary: #e0e0e0;--text-secondary: #a0a0a0;--text-primary-light: #333333;--text-secondary-light: #666666;--user-msg-bg: var(--primary);--bot-msg-bg: rgba(255, 255, 255, .08);--bot-msg-bg-light: rgba(0, 0, 0, .05);--shadow: 0 10px 30px rgba(0, 0, 0, .3);--shadow-light: 0 10px 30px rgba(0, 0, 0, .1)}[data-theme=light]{--bg-dark: #fafafa;--glass-bg: rgba(255, 255, 255, .8);--glass-border: rgba(0, 0, 0, .1);--text-primary: #333333;--text-secondary: #666666;--bot-msg-bg: rgba(0, 0, 0, .05);--shadow: 0 10px 30px rgba(0, 0, 0, .1)}*{margin:0;padding:0;box-sizing:border-box}html,body{height:100%;overflow:hidden}body{font-family:Outfit,sans-serif;background:var(--bg-dark);color:var(--text-primary);line-height:1.6}.app-container{display:flex;flex-direction:column;height:100vh;height:100dvh;max-width:900px;margin:0 auto;padding:0 1rem;transition:padding .3s ease}@media (max-width: 480px){.app-container{padding:0 .75rem}}.header{display:flex;justify-content:space-between;align-items:center;padding:1rem 0;border-bottom:1px solid var(--glass-border)}.header-title{display:flex;align-items:center;gap:.75rem}.header-title .logo{font-size:2rem}.header-title h1{font-size:clamp(1.2rem,5vw,1.5rem);font-weight:600;background:linear-gradient(135deg,var(--primary),#a78bfa);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.header-actions{display:flex;align-items:center;gap:.5rem}.auth-badge{padding:.45rem .8rem;border-radius:999px;background:#6495ed24;border:1px solid rgba(100,149,237,.35);color:var(--text-primary);font-size:.82rem;letter-spacing:.04em;text-transform:uppercase}.upgrade-btn{border:1px solid rgba(100,149,237,.35);border-radius:999px;background:transparent;color:var(--text-primary);font-family:inherit;font-size:.9rem;padding:.65rem 1rem;cursor:pointer;transition:all .2s ease}.upgrade-btn:hover{background:#6495ed1f;border-color:var(--primary)}.sign-out-btn{border:1px solid rgba(252,165,165,.35);border-radius:999px;background:transparent;color:var(--text-primary);font-family:inherit;font-size:.9rem;padding:.65rem 1rem;cursor:pointer;transition:all .2s ease}.sign-out-btn:hover{background:#fca5a51f;border-color:#fca5a5}.sign-out-btn:disabled{opacity:.7;cursor:wait}.icon-btn{width:44px;height:44px;border:none;border-radius:50%;background:var(--glass-bg);color:var(--text-primary);font-size:1.2rem;cursor:pointer;transition:all .3s ease;display:flex;align-items:center;justify-content:center;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid var(--glass-border)}.icon-btn:hover{background:#ffffff26;transform:scale(1.1)}.icon-btn:active{transform:scale(.95)}.main-content{flex:1;overflow:hidden;display:flex;flex-direction:column}.empty-state{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:2rem;animation:fadeIn .5s ease}@keyframes fadeIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.empty-logo{font-size:5rem;margin-bottom:1rem;animation:float 3s ease-in-out infinite}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}.empty-title{font-size:clamp(1.5rem,8vw,2.5rem);font-weight:600;margin-bottom:.5rem;background:linear-gradient(135deg,var(--primary),#a78bfa);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.empty-subtitle{color:var(--text-secondary);font-size:clamp(.95rem,4vw,1.1rem);margin-bottom:2rem}.prompt-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1rem;max-width:500px;width:100%}.prompt-card{display:flex;align-items:center;gap:.75rem;padding:1rem 1.25rem;background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:16px;cursor:pointer;transition:all .3s ease;text-align:left;font-family:inherit;color:var(--text-primary);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.prompt-card:hover{background:#ffffff1f;border-color:var(--primary);transform:translateY(-3px)}.prompt-icon{font-size:1.5rem}.prompt-text{font-size:.95rem;line-height:1.4}.prompt-text small{color:var(--text-secondary);font-size:.85rem}.chat-view{flex:1;display:flex;flex-direction:column;overflow:hidden}.messages-container{flex:1;overflow-y:auto;padding:1rem 0;display:flex;flex-direction:column;gap:1rem}.messages-container::-webkit-scrollbar{width:6px}.messages-container::-webkit-scrollbar-track{background:transparent}.messages-container::-webkit-scrollbar-thumb{background:#fff3;border-radius:3px}.messages-container::-webkit-scrollbar-thumb:hover{background:#ffffff4d}.message{display:flex;gap:.75rem;max-width:85%;animation:slideIn .3s ease}@media (max-width: 600px){.message{max-width:92%;gap:.5rem}}@keyframes slideIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.message.user{align-self:flex-end;flex-direction:row-reverse}.message.bot{align-self:flex-start}.message-avatar{width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.2rem;flex-shrink:0}.message.user .message-avatar{background:var(--primary)}.message.bot .message-avatar{background:var(--glass-bg);border:1px solid var(--glass-border)}.message-content{padding:.875rem 1.25rem;border-radius:20px;line-height:1.5}.message.user .message-content{background:var(--primary);color:#fff;border-bottom-right-radius:6px}.message.bot .message-content{background:var(--bot-msg-bg);border:1px solid var(--glass-border);border-bottom-left-radius:6px;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}@media (max-width: 480px){.message-content{padding:.75rem 1rem;font-size:.95rem}}.audio-message{display:flex;align-items:center;gap:12px;padding:12px 16px;background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:20px;min-width:min(280px,100%);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.audio-play-btn{width:40px;height:40px;border-radius:50%;background:var(--primary);border:none;color:#fff;font-size:1.2rem;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s ease;flex-shrink:0}.audio-play-btn:hover{background:var(--primary-hover);transform:scale(1.05)}.audio-progress{flex:1;display:flex;flex-direction:column;gap:4px}.audio-slider{width:100%;height:6px;border-radius:3px;background:#fff3;-webkit-appearance:none;-moz-appearance:none;appearance:none;cursor:pointer}.audio-slider::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:14px;height:14px;border-radius:50%;background:var(--primary);cursor:pointer;transition:transform .2s ease}.audio-slider::-webkit-slider-thumb:hover{transform:scale(1.2)}.audio-time{font-size:.75rem;color:var(--text-secondary)}.audio-volume{width:24px;height:24px;background:none;border:none;color:var(--text-secondary);cursor:pointer;font-size:1rem}.image-message{max-width:300px;border-radius:16px;overflow:hidden;cursor:pointer;transition:transform .3s ease}.image-message:hover{transform:scale(1.02)}.image-message img{width:100%;height:auto;display:block}.input-area{padding:1rem 0 1.5rem;border-top:1px solid var(--glass-border)}@media (max-width: 480px){.input-area{padding:.75rem 0 1rem}}.input-container{display:flex;align-items:center;gap:.75rem;padding:.75rem 1rem;background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:30px;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.input-container.is-recording{border-color:#f87171a6;box-shadow:0 0 0 3px #f871711f}@media (max-width: 480px){.input-container{gap:.5rem;padding:.5rem .75rem}}.file-upload-btn{width:40px;height:40px;border-radius:50%;background:transparent;display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:1.3rem;transition:all .2s ease;flex-shrink:0}.file-upload-btn:hover{background:#ffffff1a}.voice-record-btn{width:40px;height:40px;border-radius:50%;background:transparent;border:none;color:var(--text-primary);cursor:pointer;font-size:1.25rem;transition:all .2s ease;display:flex;align-items:center;justify-content:center;flex-shrink:0;touch-action:none;position:relative}.voice-record-btn:hover{background:#ffffff1a}.voice-record-btn.is-recording{background:#ef4444;color:#fff;transform:scale(1.08)}.voice-record-btn.is-recording:after{content:"";position:absolute;top:-6px;right:-6px;bottom:-6px;left:-6px;border-radius:50%;border:2px solid rgba(248,113,113,.55);animation:recordingRing 1s ease-out infinite}.recording-indicator{display:flex;align-items:center;justify-content:center;gap:.5rem;min-height:1.75rem;color:#fca5a5;font-size:.88rem;margin-top:.5rem}.recording-pulse{width:10px;height:10px;border-radius:50%;background:#ef4444;box-shadow:0 0 #ef44448c;animation:recordingPulse 1s infinite}.recording-time{min-width:2.4rem;color:var(--text-primary);font-variant-numeric:tabular-nums}.recording-hint{color:var(--text-secondary)}@keyframes recordingPulse{0%{box-shadow:0 0 #ef44448c}70%{box-shadow:0 0 0 8px #ef444400}to{box-shadow:0 0 #ef444400}}@keyframes recordingRing{0%{opacity:.9;transform:scale(.9)}to{opacity:0;transform:scale(1.35)}}.message-input{flex:1;background:transparent;border:none;color:var(--text-primary);font-size:1rem;font-family:inherit;outline:none}.message-input::placeholder{color:var(--text-secondary)}.send-btn{width:44px;height:44px;border-radius:50%;background:var(--primary);border:none;color:#fff;font-size:1.2rem;cursor:pointer;transition:all .2s ease;display:flex;align-items:center;justify-content:center;flex-shrink:0}.send-btn:hover{background:var(--primary-hover);transform:scale(1.05)}.send-btn:active{transform:scale(.95)}.file-preview{display:flex;gap:.5rem;padding:.75rem;flex-wrap:wrap}.file-preview-item{position:relative;width:60px;height:60px;border-radius:10px;overflow:hidden;background:var(--glass-bg);border:1px solid var(--glass-border)}.file-preview-item img{width:100%;height:100%;object-fit:cover}.file-preview-item .file-icon{width:100%;height:100%;display:flex;align-items:center;justify-content:center;font-size:1.5rem}.file-preview-item.audio-preview-item{width:min(260px,100%);height:60px;display:flex;align-items:center;gap:.7rem;padding:.6rem 2rem .6rem .75rem}.file-preview-item.audio-preview-item .file-icon{width:38px;height:38px;border-radius:50%;background:#6495ed29;flex-shrink:0}.file-preview-label{min-width:0;color:var(--text-primary);font-size:.86rem;line-height:1.2;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.file-preview-remove{position:absolute;top:-5px;right:-5px;width:20px;height:20px;border-radius:50%;background:#f44;border:none;color:#fff;font-size:.8rem;cursor:pointer;display:flex;align-items:center;justify-content:center}.footer-text{text-align:center;font-size:.8rem;color:var(--text-secondary);margin-top:.75rem}.modal{position:fixed;top:0;left:0;width:100%;height:100%;z-index:1000;display:flex;align-items:center;justify-content:center}.modal-overlay{position:absolute;top:0;left:0;width:100%;height:100%;background:#000000e6;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.modal-content{position:relative;max-width:90vw;max-height:90vh;display:flex;flex-direction:column;align-items:center;gap:1rem}.modal-content-card{width:min(460px,calc(100vw - 2rem))}.modal-close{position:absolute;top:-40px;right:0;width:36px;height:36px;border-radius:50%;background:var(--glass-bg);border:1px solid var(--glass-border);color:#fff;font-size:1.2rem;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s ease}.modal-close:hover{background:#fff3}.modal-image{max-width:100%;max-height:80vh;border-radius:10px;object-fit:contain;transition:transform .3s ease}.modal-actions{display:flex;gap:.75rem}.modal-btn{padding:.5rem 1rem;background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:20px;color:#fff;font-family:inherit;cursor:pointer;transition:all .2s ease}.modal-btn:hover{background:#fff3}.auth-card{width:100%;padding:1.5rem;border-radius:24px;background:var(--glass-bg);border:1px solid var(--glass-border);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);box-shadow:var(--shadow)}.auth-eyebrow{color:var(--primary);font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;margin-bottom:.5rem}.auth-title{font-size:1.6rem;line-height:1.1;margin-bottom:.65rem}.auth-copy{color:var(--text-secondary);margin-bottom:1.1rem}.upgrade-form{display:grid;gap:.9rem}.auth-provider-btn{width:100%;border:1px solid var(--glass-border);border-radius:14px;background:#ffffffeb;color:#111827;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:.65rem;font-family:inherit;font-size:.98rem;font-weight:600;padding:.9rem 1rem;transition:all .2s ease}.auth-provider-btn:hover{background:#fff;transform:translateY(-1px)}.auth-provider-btn:disabled{opacity:.7;cursor:wait}.auth-provider-mark{width:1.35rem;height:1.35rem;border-radius:50%;background:#fff;color:#4285f4;display:inline-flex;align-items:center;justify-content:center;font-weight:700;box-shadow:inset 0 0 0 1px #11182724}.auth-divider{display:flex;align-items:center;gap:.75rem;color:var(--text-secondary);font-size:.84rem;margin:.95rem 0}.auth-divider:before,.auth-divider:after{content:"";flex:1;height:1px;background:var(--glass-border)}.auth-field{display:grid;gap:.35rem;color:var(--text-secondary);font-size:.92rem}.auth-field input{width:100%;border:1px solid var(--glass-border);border-radius:14px;background:#ffffff0d;color:var(--text-primary);font-family:inherit;font-size:1rem;padding:.9rem 1rem;outline:none}.auth-field input:focus{border-color:var(--primary);box-shadow:0 0 0 3px #6495ed26}.auth-submit{border:none;border-radius:14px;background:var(--primary);color:#fff;cursor:pointer;font-family:inherit;font-size:.98rem;font-weight:600;padding:.9rem 1rem;transition:all .2s ease}.auth-submit:hover{background:var(--primary-hover)}.auth-submit:disabled{opacity:.7;cursor:wait}.auth-feedback{min-height:1.25rem;color:var(--text-secondary);font-size:.88rem}.auth-feedback.success{color:#7dd3fc}.auth-feedback.error{color:#fca5a5}@media (max-width: 600px){.modal-content{max-width:95vw;gap:.5rem}.modal-image{max-height:70vh}.modal-actions{flex-wrap:wrap;justify-content:center}.modal-btn{padding:.4rem .8rem;font-size:.85rem}.modal-close{top:-45px;right:5px}}.hidden{display:none!important}@media (max-width: 600px){.prompt-grid{grid-template-columns:1fr;gap:.75rem}.empty-logo{font-size:3.5rem}.audio-message{min-width:unset;width:100%}.header-actions{gap:.25rem;flex-wrap:wrap;justify-content:flex-end}.icon-btn{width:40px;height:40px;font-size:1.1rem}.auth-badge,.upgrade-btn,.sign-out-btn{font-size:.78rem}}@media (max-width: 400px){.header-actions{gap:0}.message-avatar{width:32px;height:32px;font-size:1rem}}.typing-indicator{display:flex;gap:4px;padding:.5rem}.typing-dot{width:8px;height:8px;border-radius:50%;background:var(--text-secondary);animation:typing 1.4s infinite}.typing-dot:nth-child(2){animation-delay:.2s}.typing-dot:nth-child(3){animation-delay:.4s}@keyframes typing{0%,60%,to{transform:translateY(0)}30%{transform:translateY(-6px)}}