:root{--bg: #f6f7f9;--panel: #ffffff;--line: #e5e7eb;--text: #111827;--muted: #6b7280;--accent: #2563eb;--accent-ink: #ffffff;--err-bg: #fef2f2;--err-line: #fecaca;--ok-bg: #f0fdf4;--ok-line: #bbf7d0}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text)}button{font:inherit;cursor:pointer}a{color:inherit;text-decoration:none}.muted{color:var(--muted)}.small{font-size:12px}.pad{padding:24px}.spacer{flex:1}.center{min-height:100vh;display:grid;place-items:center}.app{height:100vh;display:flex;flex-direction:column}.btn-primary{background:var(--accent);color:var(--accent-ink);border:0;padding:9px 16px;border-radius:8px;font-weight:600}.btn-primary:disabled{opacity:.5;cursor:default}.btn-ghost{background:transparent;border:1px solid var(--line);padding:8px 12px;border-radius:8px;color:var(--text)}.btn-ghost:hover{background:#f3f4f6}.login-card{background:var(--panel);border:1px 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