@import"https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap";*{margin:0;padding:0;box-sizing:border-box}:root{--bg-primary: #f8f9fa;--bg-secondary: #ffffff;--text-primary: #212529;--text-secondary: #6c757d;--border: #dee2e6;--accent: #0d6efd;--user-bg: #e3f2fd;--user-text: #1976d2;--assist-bg: #f8f9fa;--assist-text: #495057;--input-bg: #ffffff;--shadow-light: rgba(0, 0, 0, .05);--shadow-medium: rgba(0, 0, 0, .1)}.dark{--bg-primary: #121212;--bg-secondary: #1e1e1e;--text-primary: #e0e0e0;--text-secondary: #b0b0b0;--border: #333333;--accent: #0d6efd;--user-bg: #1e3a8a;--user-text: #bfdbfe;--assist-bg: #2d2d2d;--assist-text: #e0e0e0;--input-bg: #1e1e1e;--shadow-light: rgba(0, 0, 0, .3);--shadow-medium: rgba(0, 0, 0, .5)}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg-primary);color:var(--text-primary);line-height:1.5;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:hidden;position:relative}.app{display:flex;flex-direction:column;height:100vh;max-width:100%;overflow:hidden;transition:all .3s ease}.header{height:60px;background:var(--bg-secondary);border-bottom:1px solid var(--border);display:flex;align-items:center;padding:0 20px;position:sticky;top:0;z-index:10;transition:all .3s ease;box-shadow:0 2px 4px var(--shadow-light)}.header-content{display:flex;align-items:center;gap:12px;margin:0 auto;max-width:1200px;width:100%;flex-wrap:wrap}.header-avatar{width:36px;height:36px;border-radius:50%;background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:600;font-size:14px;flex-shrink:0}.header-text{flex:1;min-width:0;overflow:hidden}.header-title{font-size:18px;font-weight:600;color:var(--text-primary);margin:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.current-persona-name{font-size:12px;font-weight:500;color:var(--text-secondary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.persona-switch-wrapper{display:flex;flex-direction:column;align-items:flex-end;gap:2px;flex-shrink:0;min-width:140px}.switch-label{font-size:11px;font-weight:500;color:var(--text-secondary);white-space:nowrap}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.persona-select{background:var(--input-bg);border:1px solid var(--border);border-radius:8px;padding:6px 10px;font-size:13px;font-family:inherit;color:var(--text-primary);cursor:pointer;min-width:120px;transition:all .2s ease;flex-shrink:0}.persona-select:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 2px #0d6efd1a}.persona-select:hover{border-color:var(--accent)}.dark-toggle{background:var(--input-bg);border:1px solid var(--border);border-radius:50%;width:36px;height:36px;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .2s ease;color:var(--text-primary);font-size:16px;flex-shrink:0}.dark-toggle:hover{border-color:var(--accent);background:var(--bg-primary)}.main{flex:1;overflow:hidden;display:flex;justify-content:center;background:var(--bg-primary);transition:all .3s ease;position:relative}.chat-messages{flex:1;width:100%;max-width:800px;overflow-y:auto;padding:20px;display:flex;flex-direction:column;gap:16px;scroll-behavior:smooth;-webkit-overflow-scrolling:touch}.chat-messages::-webkit-scrollbar{width:4px}.chat-messages::-webkit-scrollbar-track{background:transparent}.chat-messages::-webkit-scrollbar-thumb{background:var(--border);border-radius:2px}.chat-messages::-webkit-scrollbar-thumb:hover{background:var(--text-secondary)}.message-wrapper{display:flex;animation:slideInMessage .3s ease-out forwards;opacity:0;transform:translateY(10px)}.message-wrapper.user{justify-content:flex-end}.message-wrapper.assistant{justify-content:flex-start}.message{display:flex;align-items:flex-end;gap:8px;max-width:70%;width:fit-content}.avatar{width:32px;height:32px;border-radius:50%;font-size:12px;font-weight:600;display:flex;align-items:center;justify-content:center;flex-shrink:0;background:var(--accent);color:#fff}.avatar.user{background:var(--user-text)}.message-content{padding:12px 16px;border-radius:18px;word-wrap:break-word;max-width:100%;font-size:15px;line-height:1.4;position:relative;color:var(--text-primary);box-shadow:0 1px 2px var(--shadow-light);transition:all .2s ease}.message.user .message-content{background:var(--user-bg);color:var(--user-text);border-bottom-right-radius:4px}.message.assistant .message-content{background:var(--assist-bg);color:var(--assist-text);border-bottom-left-radius:4px}.welcome-text{font-size:16px;font-weight:500;color:var(--text-primary);opacity:.95}.memory-icon{position:absolute;top:6px;right:6px;font-size:12px;opacity:.6}.message-time{font-size:11px;opacity:.7;margin-left:4px;white-space:nowrap}.uploaded-image,.preview-image{max-width:100%;max-height:250px;border-radius:12px;margin-bottom:8px;display:block;box-shadow:0 2px 8px var(--shadow-medium)}.typing-indicator{padding:12px 16px;display:flex;align-items:center;gap:8px}.typing-dots{display:flex;gap:4px}.typing-dots span{width:6px;height:6px;border-radius:50%;background:var(--text-secondary);animation:typing 1.4s infinite ease-in-out}.typing-dots span:nth-child(2){animation-delay:.2s}.typing-dots span:nth-child(3){animation-delay:.4s}@keyframes typing{0%,60%,to{transform:translateY(0);opacity:.4}30%{transform:translateY(-6px);opacity:1}}.input-area{background:var(--bg-secondary);border-top:1px solid var(--border);padding:16px 20px;position:relative;z-index:5;transition:all .3s ease;box-shadow:0 -2px 4px var(--shadow-light)}.input-wrapper{display:flex;align-items:flex-end;gap:10px;max-width:800px;margin:0 auto;background:var(--input-bg);padding:10px 14px;border-radius:24px;border:1px solid var(--border);transition:all .2s ease}.input-wrapper:focus-within{border-color:var(--accent);box-shadow:0 0 0 2px #0d6efd1a}.file-input{position:relative;display:flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:50%;background:var(--bg-primary);cursor:pointer;transition:all .2s ease;flex-shrink:0;border:1px solid var(--border)}.file-input:hover{background:var(--border)}.file-input input{position:absolute;opacity:0;width:100%;height:100%;cursor:pointer}.file-icon{font-size:16px;color:var(--text-secondary)}.input-field{flex:1;min-height:40px;max-height:120px;padding:10px 12px;border:none;border-radius:20px;font-size:15px;font-family:inherit;resize:none;outline:none;background:transparent;color:var(--text-primary);transition:all .3s ease;min-width:200px}.input-field::placeholder{color:var(--text-secondary)}.input-field:disabled{opacity:.5;cursor:not-allowed}.send-btn{width:40px;height:40px;border:none;border-radius:50%;background:var(--accent);color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:16px;transition:all .2s ease;flex-shrink:0}.send-btn:hover:not(:disabled){background:#0b5ed7;transform:scale(1.05)}.send-btn:disabled{background:var(--border);color:var(--text-secondary);cursor:not-allowed}.send-icon{transition:transform .2s ease}.send-btn:hover:not(:disabled) .send-icon{transform:translate(2px)}.agreement-popup{position:fixed;top:0;left:0;width:100vw;height:100vh;background:#00000080;display:flex;justify-content:center;align-items:center;z-index:9999;padding:20px;text-align:center;color:var(--text-primary);font-family:Inter,sans-serif}.popup-overlay{background:var(--bg-secondary);border-radius:12px;padding:32px;max-width:500px;max-height:80vh;overflow-y:auto;box-shadow:0 10px 30px var(--shadow-medium);border:1px solid var(--border)}.popup-title{font-size:1.5rem;font-weight:600;margin-bottom:20px;color:var(--accent)}.popup-text{font-size:.95rem;line-height:1.5;margin-bottom:16px;color:var(--text-primary)}.popup-list{text-align:left;margin:16px 0}.popup-list ul{list-style:none;padding:0}.popup-list li{margin:8px 0;padding-left:20px;position:relative;color:var(--text-secondary)}.popup-list li:before{content:"•";position:absolute;left:0;color:var(--accent);font-weight:700}.popup-agree-btn{background:var(--accent);color:#fff;border:none;padding:12px 24px;border-radius:8px;font-size:1rem;font-weight:500;cursor:pointer;transition:all .2s ease;margin-top:20px;width:100%}.popup-agree-btn:hover{background:#0b5ed7;transform:translateY(-1px)}@keyframes slideInMessage{to{opacity:1;transform:translateY(0)}}@media(max-width:768px){.header{height:56px;padding:0 16px}.header-content{gap:10px;flex-wrap:nowrap;justify-content:space-between}.header-avatar,.dark-toggle{width:32px;height:32px;font-size:12px}.header-title{font-size:16px}.current-persona-name{display:none}.persona-switch-wrapper{min-width:110px;gap:1px}.switch-label{font-size:10px}.persona-select{min-width:100px;padding:4px 8px;font-size:12px}.chat-messages{padding:16px;gap:12px}.message{max-width:85%;gap:6px}.avatar{width:28px;height:28px;font-size:11px}.message-content{padding:10px 14px;font-size:14px}.input-area{position:fixed;bottom:0;left:0;right:0;padding:12px 16px}.main{padding-bottom:80px}.input-wrapper{gap:8px;padding:8px 12px}.file-input,.send-btn{width:36px;height:36px}.input-field{min-height:36px;font-size:14px;min-width:150px}@supports (height: 100dvh){.app{height:100dvh}}}@media(max-width:480px){.header-content{gap:6px}.header-title{font-size:15px}.persona-switch-wrapper{min-width:90px}.switch-label{display:none}.persona-select{min-width:90px;padding:3px 6px;font-size:11px}.chat-messages{padding:12px}.message{max-width:90%}.input-field{min-width:120px}.input-area{padding:10px 12px}.input-wrapper{padding:6px 10px}}@media(max-width:360px){.header{padding:0 8px}.header-content{gap:4px}.header-avatar,.dark-toggle{width:28px;height:28px;font-size:11px}.header-title{font-size:14px}.persona-switch-wrapper{min-width:80px}.persona-select{min-width:80px;padding:2px 4px;font-size:10px}.chat-messages{padding:8px;gap:10px}.input-area{padding:8px}.input-wrapper{padding:4px 8px;gap:6px}.input-field{min-width:100px;font-size:13px}.file-input,.send-btn{width:32px;height:32px}.file-icon{font-size:14px}}@media(min-width:1200px){.chat-messages{padding:24px;gap:20px}.input-area{padding:20px 24px}}.floating-feedback{position:fixed;bottom:90px;right:18px;width:44px;height:44px;border-radius:50%;background:var(--accent);color:#fff;font-size:20px;display:flex;align-items:center;justify-content:center;box-shadow:0 6px 16px #00000040;cursor:pointer;z-index:999;text-decoration:none;transition:transform .2s ease,opacity .2s ease}.floating-feedback:hover{transform:scale(1.08);opacity:.95}.cold-start{text-align:center;font-size:13px;color:var(--text-secondary);background:var(--bg-secondary);border:1px dashed var(--border);padding:8px 12px;border-radius:10px;margin:6px auto 10px;max-width:420px;box-shadow:0 2px 6px var(--shadow-light);animation:fadeIn .3s ease-in}@keyframes fadeIn{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}.persona-banner{background:var(--bg-secondary);border:1px solid var(--border);border-radius:12px;padding:10px 14px;margin-bottom:12px;box-shadow:0 2px 6px var(--shadow-light)}.persona-name{font-size:13px;font-weight:600;color:var(--text-primary);margin-bottom:4px}.persona-hint{font-size:12px;color:var(--text-secondary);line-height:1.4}