@import url("https://fonts.googleapis.com/css2?family=Instrument+Serif:ital@0;1&family=Geist+Mono:wght@300;400;500&display=swap");:root{--bg:#eef1f5;--bg-surface:#fff;--bg-elevated:#f8f9fb;--border:#dde1e8;--border-subtle:#e8ecf0;--text-primary:#2c3345;--text-secondary:#5c6578;--text-muted:#8b95a5;--text-faint:#a8b0bc;--accent:#3d9e5f;--accent-soft:rgba(61,158,95,.1);--accent-glow:rgba(61,158,95,.2);--info:#2b6cb0;--danger:#d64545;--warn:#c98a1a;--success:#3d9e5f;--user-bg:#e8edf3;--sophia-bg:#f4f6f9;--sophia-accent:#6b5ce7;--card-shadow:0 1px 3px rgba(0,0,0,.06),0 1px 2px rgba(0,0,0,.04);--header-bg:hsla(0,0%,100%,.95);--radius:12px;--radius-sm:8px}*{margin:0;padding:0;box-sizing:border-box}body,html{height:100%;background:var(--bg);color:var(--text-primary);font-family:Geist Mono,monospace;font-size:15px;line-height:1.6;-webkit-font-smoothing:antialiased}::-webkit-scrollbar{width:4px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border);border-radius:2px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}::selection{background:var(--accent-soft);color:var(--text-primary)}