:root{--bg: #f4f5f7;--card: #ffffff;--text: #1d2330;--muted: #6b7280;--border: #e5e7eb;--accent: #2563eb;--accent-text: #ffffff;--bot: #f1f3f6;--chip: #eef2ff;--chip-text: #1e40af;--shadow: 0 10px 30px rgba(15, 23, 42, .08);--hover-shadow: 0 4px 14px rgba(15, 23, 42, .1);--focus-ring: rgba(37, 99, 235, .18)}@media(prefers-color-scheme:dark){:root{--bg: #0f1115;--card: #171a21;--text: #e6e8ee;--muted: #9aa3b2;--border: #262b36;--accent: #3b82f6;--bot: #1f2430;--chip: #1e2640;--chip-text: #bcd0ff;--shadow: none;--hover-shadow: 0 4px 14px rgba(0, 0, 0, .35);--focus-ring: rgba(59, 130, 246, .3)}}*{box-sizing:border-box}html,body{height:100%;margin:0}body{background:var(--bg);color:var(--text);font:15px/1.5 system-ui,-apple-system,Segoe UI,Roboto,sans-serif}@keyframes message-in{0%{opacity:0;transform:translateY(8px) scale(.98)}to{opacity:1;transform:none}}@keyframes bounce{0%,60%,to{transform:translateY(0);opacity:.4}30%{transform:translateY(-6px);opacity:1}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important}}