:root{--kt-bg: #0f172a;--kt-surface: #1e293b;--kt-primary: #38bdf8;--kt-text: #f1f5f9;--kt-muted: #94a3b8;--kt-error: #f87171}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--kt-bg);color:var(--kt-text)}.app-shell{min-height:100vh;min-height:100dvh}.auth-screen{display:flex;flex-direction:column;justify-content:center;min-height:100dvh;padding:24px;max-width:420px;margin:0 auto}.auth-screen h1{font-size:1.5rem;margin-bottom:4px}.auth-screen p.subtitle{color:var(--kt-muted);margin-top:0;margin-bottom:24px}.field{display:flex;flex-direction:column;gap:6px;margin-bottom:16px}.field label{font-size:.85rem;color:var(--kt-muted)}.field input{background:var(--kt-surface);border:1px solid #334155;border-radius:10px;padding:14px;font-size:1rem;color:var(--kt-text)}.btn-primary{background:var(--kt-primary);color:#0f172a;font-weight:600;border:none;border-radius:10px;padding:14px;font-size:1rem;cursor:pointer}.btn-primary:disabled{opacity:.6}.error-text{color:var(--kt-error);font-size:.85rem;margin-bottom:12px}.link-row{margin-top:16px;text-align:center;color:var(--kt-muted);font-size:.9rem}.link-row a{color:var(--kt-primary);text-decoration:none}