:root {
  --navy: #0b2a3a;
  --green: #10ad86;
  --text: #082033;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, Segoe UI, Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(16,173,134,.16), transparent 32rem),
    linear-gradient(135deg, #f6fbf9 0%, #eaf3ef 100%);
}

.login-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 20px;
}

.login-card {
  width: min(330px, 100%);
  padding: 26px;
  border-radius: 22px;
  background: rgba(255,255,255,.96);
  border: 1px solid rgba(8,32,51,.10);
  box-shadow: 0 20px 54px rgba(8,32,51,.13);
}

.brand {
  text-align: center;
  margin-bottom: 22px;
}

.brand strong {
  display: block;
  font-size: 31px;
  letter-spacing: .015em;
  color: var(--navy);
}

form {
  display: grid;
  gap: 13px;
}

label {
  display: grid;
  gap: 7px;
  font-weight: 800;
  font-size: 13px;
}

input {
  width: 100%;
  height: 44px;
  border: 1px solid #d7e4df;
  border-radius: 12px;
  padding: 0 14px;
  font: inherit;
  outline: none;
  background: #fbfefd;
}

input:focus {
  border-color: var(--green);
  box-shadow: 0 0 0 4px rgba(16,173,134,.14);
}

button {
  height: 45px;
  border: 0;
  border-radius: 12px;
  color: #fff;
  background: linear-gradient(135deg, var(--green), #087d67);
  font: inherit;
  font-weight: 900;
  cursor: pointer;
}

button:hover { filter: brightness(.98); }

.message {
  min-height: 20px;
  margin: 0;
  color: #b42318;
  font-size: 13px;
  font-weight: 800;
  text-align: center;
}