:root{--primary: #2A3447;--primary-dark: #1A2332;--primary-light: #3D4A5C;--secondary: #667eea;--secondary-dark: #764ba2;--success: #4CAF50;--error: #FF3B30;--warning: #FF9800;--info: #2196F3;--background: #f0f2f5;--surface: #FFFFFF;--text-primary: #1A1A1A;--text-secondary: #6B7280;--text-light: #9CA3AF;--border: #E8E9EA;--border-light: #F0F0F0;--white: #FFFFFF;--black: #000000;--incoming-msg: #FFFFFF;--outgoing-msg: #d9fdd3;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -2px rgba(0, 0, 0, .05);--font-family: "Segoe UI", "Helvetica Neue", Helvetica, Arial, sans-serif}@media(prefers-color-scheme:dark){:root{--primary: #202c33;--primary-dark: #111b21;--primary-light: #2a3942;--background: #111b21;--surface: #202c33;--text-primary: #e9edef;--text-secondary: #8696a0;--text-light: #667781;--border: #2a3942;--border-light: #222e35;--incoming-msg: #202c33;--outgoing-msg: #005c4b;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .3);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .4)}}*{box-sizing:border-box}body{margin:0;font-family:var(--font-family);background-color:var(--background);color:var(--text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;height:100vh;overflow:hidden}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#0003;border-radius:3px}::-webkit-scrollbar-thumb:hover{background:#0000004d}@media(prefers-color-scheme:dark){::-webkit-scrollbar-thumb{background:#ffffff1a}::-webkit-scrollbar-thumb:hover{background:#ffffff26}}.app-container{display:flex;height:100vh;width:100vw;overflow:hidden;position:relative}@media(min-width:1600px){.app-container{max-width:1600px;margin:19px auto 0;box-shadow:0 0 20px #0000001a;height:calc(100vh - 38px);border-radius:4px;overflow:hidden}}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.animate-fade-in{animation:fadeIn .3s ease-out forwards}.truncate{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.flex-center{display:flex;align-items:center;justify-content:center}@keyframes highlight-blink{0%{background-color:transparent}50%{background-color:#06cf9c4d}to{background-color:transparent}}.highlight-message{animation:highlight-blink 1s ease-in-out}