:root { color-scheme: dark; font-family: Inter, system-ui, sans-serif;
  --bg:#0f1211; --panel:#151918; --borda:#28302c; --input-bg:#121615; --input-border:#2b332f;
  --txt:#f2f5f3; --txt-2:#a3ada7; --acc:#10a35f; --acc-2:#35c07d;
  --erro-bg:rgba(217,92,92,.12); --erro-txt:#e88c8c; --erro-borda:rgba(217,92,92,.32); }
[data-theme=light] { color-scheme: light;
  --bg:#f4f6f5; --panel:#ffffff; --borda:#dce2de; --input-bg:#ffffff; --input-border:#d3dad5;
  --txt:#1b211e; --txt-2:#5a6560; --acc:#0e8c53; --acc-2:#0c7847;
  --erro-bg:rgba(192,72,72,.10); --erro-txt:#b13c3c; --erro-borda:rgba(192,72,72,.30); }
* { box-sizing: border-box; }
body { min-height: 100vh; margin: 0; display: grid; place-items: center; background: var(--bg); color: var(--txt); }
.login-card { width: min(390px, calc(100% - 32px)); padding: 38px; border: 1px solid var(--borda); border-radius: 16px; background: var(--panel); box-shadow: 0 16px 48px rgba(0,0,0,.18); }
.logo { display: block; width: 56px; height: 56px; margin: 0 auto 14px; border-radius: 14px; }
h1, p { text-align: center; } h1 { margin: 0; font-size: 28px; } p { margin: 8px 0 28px; color: var(--txt-2); }
label { display: block; margin-bottom: 8px; font-size: 14px; color: var(--txt-2); } input, button { width: 100%; border-radius: 9px; font: inherit; }
input { padding: 12px; border: 1px solid var(--input-border); background: var(--input-bg); color: inherit; outline: none; }
input:focus { border-color: var(--acc); }
button { margin-top: 18px; padding: 12px; border: 0; background: var(--acc); color: #fff; font-weight: 700; cursor: pointer; }
button:hover { background: var(--acc-2); }
.error { margin-bottom: 18px; padding: 10px; border-radius: 8px; background: var(--erro-bg); border: 1px solid var(--erro-borda); color: var(--erro-txt); font-size: 14px; }