* { box-sizing: border-box; }
html, body { min-height: 100%; }
body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: #102a1d;
  background: linear-gradient(135deg, #f6f8f4 0%, #e7eee7 100%);
}
.login-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}
.login-card {
  width: min(430px, 100%);
  padding: 36px;
  border: 1px solid #d8e0d7;
  border-radius: 18px;
  background: #fff;
  box-shadow: 0 24px 70px rgba(16, 42, 29, 0.13);
  text-align: center;
}
.login-seal { width: 92px; height: 92px; object-fit: contain; }
.login-eyebrow {
  margin: 18px 0 6px;
  color: #4d6657;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}
h1 { margin: 0; font-size: clamp(1.7rem, 5vw, 2.25rem); }
.login-copy { margin: 10px 0 26px; color: #66756d; }
.login-form { display: grid; gap: 16px; text-align: left; }
.login-form label { display: grid; gap: 7px; font-weight: 700; }
.login-form input {
  width: 100%;
  padding: 13px 14px;
  border: 1px solid #bfcac1;
  border-radius: 9px;
  font: inherit;
}
.login-form input:focus { outline: 3px solid rgba(31, 111, 72, 0.18); border-color: #1f6f48; }
.login-form button {
  margin-top: 4px;
  padding: 13px 16px;
  border: 0;
  border-radius: 9px;
  background: #185f3d;
  color: #fff;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}
.login-form button:disabled { opacity: 0.65; cursor: wait; }
.login-message { min-height: 1.25em; margin: 0; color: #b42318; font-size: 0.92rem; text-align: center; }