:root{--primary: #306090;--primary-light: #4080b0;--primary-dark: #204060;--bg: #ffffff;--surface: #f5f7fa;--text: #1a1a2e;--text-secondary: #696969;--border: #e0e0e0;--error: #e74c3c;--success: #2ecc71;--bubble-out: #306090;--bubble-in: #e8ecf1;--bubble-out-text: #ffffff;--bubble-in-text: #1a1a2e;--input-bg: #f0f0f5;--placeholder: #a0a0b0;--badge: #e74c3c}@media (prefers-color-scheme: dark){:root{--bg: #1a1a2e;--surface: #16213e;--text: #ffffff;--text-secondary: #a0a0b0;--border: #2a2a4a;--bubble-in: #2a2a4a;--bubble-in-text: #ffffff;--input-bg: #2a2a4a;--placeholder: #606080}}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;overscroll-behavior:none}#root{height:100dvh;display:flex;flex-direction:column}.header{display:flex;align-items:center;justify-content:space-between;padding:12px 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