:root{--surface: #f6f5fb;--card: #ffffff;--text: #111827;--muted: #6b7280;--border: #e5e7eb;--primary: #4f46e5;--primary-hover: #4338ca;--danger: #dc2626;--radius: 12px}*{box-sizing:border-box}html,body{margin:0;padding:0;min-height:100%;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;color:var(--text);background:var(--surface);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}.muted{color:var(--muted)}.auth-card{width:100%;max-width:420px;background:var(--card);border-radius:var(--radius);padding:2rem;box-shadow:0 10px 30px #0f172a14}.auth-card h1{margin:0 0 .25rem;font-size:1.5rem}.auth-card .muted{margin:0 0 1.5rem;font-size:.9375rem}.auth-card form{display:grid;gap:1rem}.field{display:flex;flex-direction:column;gap:.375rem;font-size:.875rem}.field{min-width:0}.field input{width:100%;padding:.625rem .75rem;border:1px solid var(--border);border-radius:8px;font-size:.9375rem;background:#fff;transition:border-color .12s ease,box-shadow .12s ease}.row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}.field input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #4f46e52e}button[type=submit]{margin-top:.5rem;padding:.7rem 1rem;border:0;border-radius:8px;background:var(--primary);color:#fff;font-weight:600;font-size:.9375rem;cursor:pointer;transition:background .12s ease}button[type=submit]:hover:not(:disabled){background:var(--primary-hover)}button[type=submit]:disabled{opacity:.6;cursor:not-allowed}button.ghost{border:1px solid var(--border);background:#fff;border-radius:8px;padding:.5rem .875rem;font-size:.875rem;cursor:pointer;color:var(--text)}button.ghost:hover{background:var(--surface)}.error{margin:0;padding:.625rem .75rem;background:#fee2e2;color:var(--danger);border-radius:8px;font-size:.875rem}.alt{margin-top:1.5rem;text-align:center;font-size:.875rem;color:var(--muted)}