:root {
  color-scheme: light;
  font-family: Inter, "Segoe UI", Arial, sans-serif;
  color: #1d2522;
  background: #edf2ef;
  letter-spacing: 0;
  --green: #176b4d;
  --green-dark: #0e5139;
  --line: #d8dedb;
  --muted: #66716c;
  --red: #9c2f2f;
}

* { box-sizing: border-box; }
body { margin: 0; min-width: 320px; }
.login-shell { min-height: 100svh; display: grid; place-items: center; padding: 24px; }
.login-panel { width: min(100%, 400px); background: #fff; border: 1px solid var(--line); border-radius: 8px; padding: 32px; box-shadow: 0 18px 48px rgba(19, 46, 34, .1); }
.brand-mark { width: 46px; height: 46px; display: block; object-fit: contain; border-radius: 6px; }
.brand-name { margin: 12px 0 28px; color: var(--green-dark); font-weight: 750; }
h1 { margin: 0; font-size: 24px; line-height: 1.25; }
.subtitle { margin: 8px 0 24px; color: var(--muted); font-size: 14px; line-height: 1.5; }
form, label { display: grid; gap: 7px; }
form { gap: 17px; }
label span { color: #3d4843; font-size: 13px; font-weight: 650; }
input, button { width: 100%; height: 44px; border-radius: 5px; font: inherit; letter-spacing: 0; }
input { border: 1px solid #bdc7c2; padding: 10px 11px; outline: 0; }
input:focus { border-color: var(--green); box-shadow: 0 0 0 3px rgba(23, 107, 77, .12); }
button { margin-top: 4px; border: 1px solid var(--green); background: var(--green); color: #fff; font-weight: 750; cursor: pointer; }
button:hover { background: var(--green-dark); }
.error { margin: 0 0 18px; border-left: 3px solid var(--red); background: #fff1f1; color: var(--red); padding: 10px 12px; font-size: 13px; line-height: 1.4; }

@media (max-width: 480px) {
  .login-shell { place-items: start center; padding: 18px 12px; }
  .login-panel { padding: 24px 20px; }
}