.sidebar{width:240px;height:100vh;background:var(--color-surface);border-right:1px solid var(--color-border);display:flex;flex-direction:column;padding:24px 16px;position:fixed;left:0;top:0}.sidebar-logo{padding:0 8px 32px}.logo-text{font-size:22px;font-weight:700;color:var(--color-black);letter-spacing:-.5px}.logo-accent{color:var(--color-2)}.sidebar-nav{display:flex;flex-direction:column;gap:4px;flex:1}.nav-item{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:var(--radius-sm);color:var(--color-text);text-decoration:none;font-size:14px;font-weight:500;transition:all .15s ease}.nav-item:hover{background:var(--color-surface-2);color:var(--color-black)}.nav-item.active{background:#fcf4e9;color:var(--color-2);border-left:2px solid var(--color-2);font-weight:600}.sidebar-footer{padding:8px}.version{font-size:11px;color:var(--color-text-light)}.message-wrapper{display:flex;gap:12px;padding:16px 0;align-items:flex-start}.message-avatar{width:36px;height:36px;border-radius:50%;background:var(--color-surface-2);display:flex;align-items:center;justify-content:center;font-size:16px;flex-shrink:0}.message-bubble{max-width:70%;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);padding:12px 16px}.message-wrapper.user .message-bubble{background:var(--color-2);border-color:var(--color-2)}.message-wrapper.user .message-content{color:#fff}.message-role{font-size:11px;font-weight:600;color:var(--color-text-light);margin-bottom:6px;text-transform:uppercase;letter-spacing:.5px}.message-content{font-size:14px;color:var(--color-black);line-height:1.6}.message-content p{margin:0 0 8px}.message-content p:last-child{margin:0}.message-time{font-size:10px;color:var(--color-text);margin-top:8px}.chat-window{flex:1;overflow-y:auto;padding:24px;display:flex;flex-direction:column;gap:16px}.chat-empty{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:10px;padding:60px 24px}.chat-empty-icon{font-size:48px;margin-bottom:8px}.chat-empty h2{font-size:24px;font-weight:700;color:var(--color-black);letter-spacing:-.3px}.chat-empty p{font-size:14px;color:var(--color-text-light);max-width:360px;line-height:1.6}.message-wrapper{display:flex;gap:12px;align-items:flex-start}.message-wrapper.user{flex-direction:row-reverse}.message-avatar{width:32px;height:32px;border-radius:50%;background:var(--color-surface-2);display:flex;align-items:center;justify-content:center;font-size:16px;flex-shrink:0;border:1px solid var(--color-border)}.message-bubble{max-width:70%;padding:12px 16px;border-radius:var(--radius-md);font-size:14px;line-height:1.6;color:var(--color-black);background:var(--color-surface);border:1px solid var(--color-border)}.message-wrapper.user .message-bubble{background:var(--color-2);color:#fff;border-color:var(--color-2)}.typing-indicator{display:flex;gap:5px;align-items:center;padding:4px 0}.typing-indicator span{width:7px;height:7px;border-radius:50%;background:var(--color-2);opacity:.5;animation:bounce 1.2s infinite ease-in-out}.typing-indicator span:nth-child(2){animation-delay:.2s}.typing-indicator span:nth-child(3){animation-delay:.4s}@keyframes bounce{0%,80%,to{transform:translateY(0);opacity:.4}40%{transform:translateY(-6px);opacity:1}}.chat-input-wrapper{padding:16px 24px 24px;border-top:1px solid var(--color-border);background:var(--color-bg)}.chat-input-container{display:flex;align-items:flex-end;gap:8px;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:12px 16px;transition:border-color .15s ease}.chat-input-container:focus-within{border-color:var(--color-2)}.chat-input{flex:1;background:transparent;border:none;outline:none;color:var(--color-black);font-size:14px;line-height:1.5;resize:none;max-height:120px;font-family:var(--font-main)}.chat-input::placeholder{color:var(--color-text)}.send-btn{width:32px;height:32px;border-radius:50%;background:var(--color-2);color:var(--color-white);border:none;cursor:pointer;font-size:16px;display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:all .15s ease}.send-btn:hover:not(:disabled){background:var(--color-btn-hover);color:var(--color-btn-hover-text)}.send-btn:disabled{opacity:.4;cursor:not-allowed}.chat-hint{font-size:11px;color:var(--color-text);margin:8px 0 0 4px}.chat-page{display:flex;flex-direction:column;height:100vh;background:var(--color-bg)}.chat-header{display:flex;align-items:center;gap:12px;padding:20px 24px;border-bottom:1px solid var(--color-border);background:var(--color-surface)}.chat-header h1{font-size:18px;font-weight:600;color:var(--color-black);margin:0}.chat-badge{font-size:11px;padding:2px 8px;border-radius:99px;background:#fcf4e9;color:var(--color-2);border:1px solid var(--color-3);font-weight:600}:root{--color-1: #F3F3F2;--color-2: #8A4F34;--color-3: hsla(34, 75%, 80%, 1);--color-bg: #f8f8f7;--color-surface: #ffffff;--color-surface-2: #f0efed;--color-border: #e2e0dc;--color-text: #4a4744;--color-text-light: #7a7470;--color-white: #ffffff;--color-black: #1a1816;--color-btn: #8A4F34;--color-btn-text: #ffffff;--color-btn-hover: #6e3e29;--color-btn-hover-text: #ffffff;--color-error: hsla(359, 70%, 94%, 1);--color-success: hsla(76, 50%, 88%, 1);--color-info: hsla(205, 60%, 92%, 1);--color-notice: hsla(51, 80%, 88%, 1);--radius-sm: 6px;--radius-md: 12px;--radius-lg: 20px;--font-main: "Inter", sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--color-bg);font-family:var(--font-main);color:var(--color-text)}.app-layout{display:flex;height:100vh}.app-main{margin-left:240px;flex:1;overflow:hidden;display:flex;flex-direction:column}