*,*:before,*:after{box-sizing:border-box}*{margin:0;padding:0}:root{--brand: #7C3AED;--brand-light: #8B5CF6;--brand-dark: #5B21B6;--brand-glow: rgba(124, 58, 237, .3);--bg-primary: #0F0F14;--bg-secondary: #16161F;--bg-tertiary: #1E1E2E;--bg-card: #1A1A27;--border: rgba(255,255,255,.08);--border-strong: rgba(255,255,255,.15);--text-primary: #F0F0FF;--text-secondary: #A0A0C0;--text-muted: #606080;--bubble-mine: #4C1D95;--bubble-their: #1E1E2E;--success: #10B981;--danger: #EF4444;--ai-color: #A78BFA}body{font-family:Segoe UI,system-ui,-apple-system,sans-serif;background:var(--bg-primary);color:var(--text-primary);-webkit-font-smoothing:antialiased}::-webkit-scrollbar{width:4px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#7c3aed4d;border-radius:2px}::-webkit-scrollbar-thumb:hover{background:#7c3aed80}textarea{font-family:inherit}button:focus-visible{outline:2px solid var(--brand);outline-offset:2px}input:focus{border-color:var(--brand)!important;box-shadow:0 0 0 3px var(--brand-glow)!important}