:root{--color-bg-primary: #0a0a0f;--color-bg-secondary: #12121a;--color-bg-tertiary: #1a1a25;--color-bg-chat: #0e0e15;--color-text-primary: #f0f0f5;--color-text-secondary: #a0a0b0;--color-text-muted: #606070;--color-accent: #5865f2;--color-accent-hover: #4752c4;--color-user-bubble: #5865f2;--color-ai-bubble: #1e1e2a;--color-border: #252535;--color-success: #3ba55c;--color-error: #ed4245;--color-error-bg: rgba(237, 66, 69, .1);--font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--chat-width: 520px;--chat-height: 680px}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body{width:100%;height:100%;overflow:hidden}html{font-size:16px;-webkit-text-size-adjust:100%;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-family);background:var(--color-bg-primary);color:var(--color-text-primary);line-height:1.5}#app{width:100%;height:100%;display:flex;justify-content:center;align-items:center;padding:20px}.chat-container{width:var(--chat-width);height:var(--chat-height);background:var(--color-bg-secondary);border-radius:20px;border:1px solid var(--color-border);overflow:hidden;display:flex;flex-direction:column;box-shadow:0 8px 32px #00000080,0 4px 16px #0006}::-webkit-scrollbar{width:5px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--color-border);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--color-text-muted)}:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px}button:focus-visible,textarea:focus-visible{outline:2px solid var(--color-accent);outline-offset:0}@media (max-width: 560px){#app{padding:0}.chat-container{width:100%;height:100%;border-radius:0;border:none}}@media (min-width: 1200px){:root{--chat-width: 560px;--chat-height: 720px}}