:root{--green: #5d6b37;--green-dark: #4a5629;--green-light: #c8cb7a;--bg: #fafaf8;--card: #ffffff;--ink: #1f2416;--muted: #5b6150;--line: #e3e5d6;--error: #8a2d1a;color-scheme:light}@media (prefers-color-scheme: dark){:root:not([data-theme=light]){--bg: #1b1f14;--card: #252b1c;--ink: #f1f2e8;--muted: #b8bda6;--line: #3a4129}}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,sans-serif;color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased}h1{font-size:22px;margin:8px 0}.muted{color:var(--muted)}.small{font-size:13px}.error{color:var(--error);font-size:14px}.signin{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:16px}.signin-card{width:100%;max-width:380px;background:var(--card);border:1px solid var(--line);border-radius:16px;padding:24px;text-align:center}.brand-mark{width:56px;height:56px;margin:0 auto;border-radius:14px;background:var(--green);color:var(--bg);display:flex;align-items:center;justify-content:center;font-weight:800;font-size:20px}form{display:flex;flex-direction:column;gap:14px;margin-top:16px;text-align:left}label{display:flex;flex-direction:column;gap:6px;font-size:14px;font-weight:700}input{font:inherit;font-weight:400;min-height:48px;padding:10px 12px;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--ink)}button.primary{min-height:48px;border:0;border-radius:8px;background:var(--green);color:var(--bg);font:inherit;font-weight:700;font-size:16px;cursor:pointer}button.primary:hover{background:var(--green-dark)}.shell{min-height:100vh}.topbar{display:flex;justify-content:space-between;align-items:center;padding:16px;background:var(--green);color:var(--bg)}.brand{font-weight:800;letter-spacing:.5px}.who{font-size:14px;color:var(--green-light)}.card{margin:16px;padding:16px;background:var(--card);border:1px solid var(--line);border-radius:12px}button.link{background:none;border:0;color:var(--green);font:inherit;font-size:14px;margin-top:12px;cursor:pointer}button:disabled{opacity:.6;cursor:default}