:root{--indigo:#4f46e5;--indigo-strong:#4338ca;--violet:#8b5cf6;--bg:#fff;--bg-soft:#f4f5fb;--surface:#fff;--surface-raised:#fff;--border:#e5e7f0;--text:#15172b;--text-soft:#6b6f85;--accent:var(--indigo);--accent-contrast:#fff;--bubble-mine:linear-gradient(135deg, #4f46e5, #6d5ef0);--bubble-theirs:#eef0f8;--shadow:0 2px 16px #15172b14;--radius:18px;--radius-sm:12px;--nav-h:64px;font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;font-family:Inter,system-ui,-apple-system,sans-serif}@media (prefers-color-scheme:dark){:root{--bg:#0b0c14;--bg-soft:#11131f;--surface:#161828;--surface-raised:#1c1f33;--border:#262a42;--text:#eef0fa;--text-soft:#9298b0;--accent:#6d5ef0;--accent-contrast:#fff;--bubble-mine:linear-gradient(135deg, #4f46e5, #7c5ef0);--bubble-theirs:#1c1f33;--shadow:0 2px 16px #0006}}*{box-sizing:border-box;margin:0;padding:0}html,body{height:100%}#root{height:var(--app-h,100%)}body{background:var(--bg);color:var(--text);overscroll-behavior:none;-webkit-tap-highlight-color:transparent;-webkit-user-select:none;user-select:none}h1,h2,h3,.brand{letter-spacing:-.02em;font-family:Space Grotesk,Inter,system-ui,sans-serif}input,textarea{-webkit-user-select:text;user-select:text;font:inherit;color:inherit}button{font:inherit;color:inherit;cursor:pointer;touch-action:manipulation;background:0 0;border:none}.safe-top{padding-top:env(safe-area-inset-top)}.safe-bottom{padding-bottom:env(safe-area-inset-bottom)}.btn-primary{border-radius:var(--radius);background:var(--accent);width:100%;min-height:52px;color:var(--accent-contrast);box-shadow:var(--shadow);justify-content:center;align-items:center;gap:10px;font-size:16px;font-weight:600;transition:transform .12s,filter .12s;display:flex}.btn-primary:active{filter:brightness(1.1);transform:scale(.97)}.btn-ghost{border-radius:var(--radius);border:1.5px solid var(--border);background:var(--surface);justify-content:center;align-items:center;gap:10px;width:100%;min-height:52px;font-size:16px;font-weight:600;transition:transform .12s;display:flex}.btn-ghost:active{transform:scale(.97)}.skeleton{background:linear-gradient(90deg, var(--bg-soft) 25%, var(--border) 50%, var(--bg-soft) 75%);border-radius:var(--radius-sm);background-size:200% 100%;animation:1.4s infinite shimmer}@keyframes shimmer{to{background-position:-200% 0}}