*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg-primary: #0d1117;--bg-secondary: #151b23;--bg-tertiary: #1c2333;--bg-hover: #1f2937;--border: #2d333b;--border-light: #3d444d;--text-primary: #e6edf3;--text-secondary: #8b949e;--text-muted: #656d76;--accent: #58a6ff;--accent-dim: #1f3a5f;--accent-hover: #79c0ff;--error: #f85149;--success: #3fb950;--user-bg: #1c2333;--assistant-bg: transparent;--sidebar-width: 280px;--input-height: 52px;--font-body: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;--font-mono: "JetBrains Mono", "Fira Code", monospace}html,body{height:100%;overflow:hidden;background:var(--bg-primary);color:var(--text-primary);font-family:var(--font-body);font-size:14px;line-height:1.6;-webkit-font-smoothing:antialiased}#root{height:100%}.kestris-loading{height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;background:var(--bg-primary);gap:16px}.loading-icon{width:48px;height:48px;border-radius:12px;background:var(--accent-dim);color:var(--accent);font-family:var(--font-mono);font-size:24px;font-weight:600;display:flex;align-items:center;justify-content:center;animation:pulse 2s ease-in-out infinite}.loading-text{color:var(--text-secondary);font-size:13px}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.kestris-login{height:100%;display:flex;align-items:center;justify-content:center;background:var(--bg-primary)}.login-card{display:flex;flex-direction:column;align-items:center;gap:16px;padding:48px}.login-logo{width:72px;height:72px;border-radius:16px;background:var(--accent-dim);color:var(--accent);font-family:var(--font-mono);font-size:36px;font-weight:700;display:flex;align-items:center;justify-content:center;margin-bottom:8px}.login-title{font-size:28px;font-weight:600;color:var(--text-primary);letter-spacing:-.02em}.login-subtitle{color:var(--text-secondary);font-size:14px;margin-bottom:16px}.login-button-wrapper{display:flex;justify-content:center}.kestris{height:100%;display:flex;background:var(--bg-primary)}.sidebar{width:var(--sidebar-width);min-width:var(--sidebar-width);height:100%;display:flex;flex-direction:column;background:var(--bg-secondary);border-right:1px solid var(--border)}.sidebar-collapsed{width:48px;min-width:48px;align-items:center;padding-top:12px;gap:8px}.sidebar-header{display:flex;align-items:center;justify-content:space-between;padding:16px;border-bottom:1px solid var(--border)}.sidebar-brand{display:flex;align-items:center;gap:10px}.sidebar-logo{width:28px;height:28px;border-radius:8px;background:var(--accent-dim);color:var(--accent);font-family:var(--font-mono);font-size:15px;font-weight:600;display:flex;align-items:center;justify-content:center}.sidebar-title{font-size:15px;font-weight:600;letter-spacing:-.01em}.sidebar-toggle{background:none;border:none;color:var(--text-secondary);cursor:pointer;padding:4px;border-radius:6px;display:flex;align-items:center;justify-content:center}.sidebar-toggle:hover{color:var(--text-primary);background:var(--bg-hover)}.sidebar-new-chat{display:flex;align-items:center;gap:8px;margin:12px 12px 0;padding:8px 12px;background:var(--bg-tertiary);border:1px solid var(--border);border-radius:8px;color:var(--text-primary);font-size:13px;font-family:var(--font-body);cursor:pointer;transition:background .15s,border-color .15s}.sidebar-new-chat:hover{background:var(--bg-hover);border-color:var(--border-light)}.sidebar-new-collapsed{background:none;border:none;color:var(--text-secondary);cursor:pointer;padding:8px;border-radius:8px;display:flex;align-items:center;justify-content:center}.sidebar-new-collapsed:hover{color:var(--text-primary);background:var(--bg-hover)}.sidebar-conversations{flex:1;overflow-y:auto;padding:8px}.sidebar-conv{padding:10px 12px;border-radius:8px;cursor:pointer;transition:background .15s}.sidebar-conv:hover{background:var(--bg-hover)}.sidebar-conv.active{background:var(--bg-tertiary)}.conv-title{font-size:13px;color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;line-height:1.4}.conv-meta{display:flex;align-items:center;justify-content:space-between;margin-top:2px}.conv-date{font-size:11px;color:var(--text-muted)}.conv-delete{background:none;border:none;color:var(--text-muted);cursor:pointer;padding:2px;border-radius:4px;display:flex;align-items:center}.conv-delete:hover{color:var(--error)}.sidebar-empty{padding:24px 12px;text-align:center;color:var(--text-muted);font-size:13px}.sidebar-footer{padding:12px;border-top:1px solid var(--border);display:flex;flex-direction:column;gap:12px}.model-selector{display:flex;flex-direction:column;gap:4px}.model-label{font-size:11px;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em}.model-select{background:var(--bg-tertiary);border:1px solid var(--border);border-radius:6px;color:var(--text-primary);font-family:var(--font-body);font-size:13px;padding:6px 8px;cursor:pointer}.model-select:focus{outline:none;border-color:var(--accent)}.sidebar-user{display:flex;align-items:center;gap:8px}.user-avatar{width:24px;height:24px;border-radius:50%}.user-name{flex:1;font-size:12px;color:var(--text-secondary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.user-signout{background:none;border:none;color:var(--text-muted);cursor:pointer;padding:4px;border-radius:4px;display:flex;align-items:center}.user-signout:hover{color:var(--text-primary)}.chat{flex:1;display:flex;flex-direction:column;min-width:0;height:100%}.chat-empty{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;padding-bottom:80px}.chat-empty-icon{width:64px;height:64px;border-radius:16px;background:var(--accent-dim);color:var(--accent);font-family:var(--font-mono);font-size:32px;font-weight:700;display:flex;align-items:center;justify-content:center}.chat-empty-title{font-size:24px;font-weight:600;color:var(--text-primary)}.chat-empty-subtitle{color:var(--text-secondary);font-size:14px}.chat-messages{flex:1;overflow-y:auto;padding:24px 0;scroll-behavior:smooth}.message{display:flex;gap:12px;padding:8px 24px;max-width:900px;margin:0 auto;width:100%}.message-user{justify-content:flex-end}.message-avatar{width:28px;height:28px;min-width:28px;border-radius:8px;background:var(--accent-dim);color:var(--accent);font-family:var(--font-mono);font-size:13px;font-weight:600;display:flex;align-items:center;justify-content:center;margin-top:2px}.message-content{max-width:85%}.user-content{background:var(--user-bg);border:1px solid var(--border);border-radius:12px 12px 4px;padding:10px 14px}.assistant-content{padding:4px 0}.message-text{font-size:14px;line-height:1.65;word-wrap:break-word;overflow-wrap:break-word}.streaming-cursor{display:inline-block;width:8px;height:18px;background:var(--accent);border-radius:2px;animation:blink 1s step-end infinite;vertical-align:text-bottom}@keyframes blink{0%,to{opacity:1}50%{opacity:0}}.chat-error{display:flex;align-items:center;gap:8px;max-width:900px;margin:8px auto;padding:10px 24px;color:var(--error);font-size:13px}.error-icon{width:20px;height:20px;border-radius:50%;background:var(--error);color:var(--bg-primary);font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0}.chat-input-wrapper{padding:0 24px 24px;max-width:900px;margin:0 auto;width:100%}.chat-input{display:flex;align-items:flex-end;gap:8px;background:var(--bg-secondary);border:1px solid var(--border);border-radius:12px;padding:8px 12px;transition:border-color .15s}.chat-input:focus-within{border-color:var(--accent)}.chat-textarea{flex:1;background:none;border:none;color:var(--text-primary);font-family:var(--font-body);font-size:14px;line-height:1.5;resize:none;min-height:24px;max-height:200px;padding:4px 0}.chat-textarea::placeholder{color:var(--text-muted)}.chat-textarea:focus{outline:none}.chat-textarea:disabled{opacity:.5}.chat-send-btn,.chat-stop-btn{width:32px;height:32px;border-radius:8px;border:none;display:flex;align-items:center;justify-content:center;cursor:pointer;flex-shrink:0;transition:background .15s,opacity .15s}.chat-send-btn{background:var(--accent);color:var(--bg-primary)}.chat-send-btn:hover:not(:disabled){background:var(--accent-hover)}.chat-send-btn:disabled{opacity:.3;cursor:default}.chat-stop-btn{background:var(--error);color:#fff}.chat-stop-btn:hover{opacity:.9}.markdown-body h1,.markdown-body h2,.markdown-body h3,.markdown-body h4{margin-top:20px;margin-bottom:8px;font-weight:600;line-height:1.3}.markdown-body h1{font-size:20px}.markdown-body h2{font-size:17px}.markdown-body h3{font-size:15px}.markdown-body h4{font-size:14px}.markdown-body p{margin-bottom:12px}.markdown-body p:last-child{margin-bottom:0}.markdown-body ul,.markdown-body ol{padding-left:24px;margin-bottom:12px}.markdown-body li{margin-bottom:4px}.markdown-body strong{font-weight:600;color:var(--text-primary)}.markdown-body em{font-style:italic}.markdown-body a{color:var(--accent);text-decoration:none}.markdown-body a:hover{text-decoration:underline}.markdown-body code{background:var(--bg-tertiary);border:1px solid var(--border);border-radius:4px;padding:1px 5px;font-family:var(--font-mono);font-size:13px}.markdown-body pre{background:var(--bg-tertiary);border:1px solid var(--border);border-radius:8px;padding:14px 16px;margin-bottom:12px;overflow-x:auto}.markdown-body pre code{background:none;border:none;padding:0;font-size:13px;line-height:1.5}.markdown-body blockquote{border-left:3px solid var(--accent-dim);padding-left:14px;color:var(--text-secondary);margin-bottom:12px}.markdown-body table{width:100%;border-collapse:collapse;margin-bottom:12px}.markdown-body th,.markdown-body td{border:1px solid var(--border);padding:8px 12px;text-align:left;font-size:13px}.markdown-body th{background:var(--bg-tertiary);font-weight:600}.markdown-body hr{border:none;border-top:1px solid var(--border);margin:16px 0}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--border-light)}@media(max-width:768px){.sidebar{position:fixed;left:0;top:0;bottom:0;z-index:100;transform:translate(-100%);transition:transform .2s ease}.sidebar:not(.sidebar-collapsed){transform:translate(0);box-shadow:4px 0 24px #00000080}.sidebar-collapsed{transform:translate(0)}.message{padding:8px 16px}.chat-input-wrapper{padding:0 16px 16px}}