:root {
  color-scheme: light;
  font-family: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;
  background: #eef3ed;
  color: #183126;
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(circle at 15% 20%, rgba(181, 207, 177, 0.55), transparent 32rem),
    radial-gradient(circle at 85% 80%, rgba(219, 195, 146, 0.35), transparent 28rem),
    #eef3ed;
}

.login-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.login-card {
  width: min(100%, 420px);
  padding: 42px 38px 32px;
  border: 1px solid rgba(42, 83, 62, 0.14);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 24px 70px rgba(38, 67, 51, 0.14);
}

.brand-mark {
  display: grid;
  width: 54px;
  height: 54px;
  margin-bottom: 22px;
  place-items: center;
  border-radius: 15px;
  background: #285b43;
  color: #fff;
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.eyebrow {
  margin: 0 0 7px;
  color: #6b7d70;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(25px, 7vw, 32px);
  line-height: 1.25;
}

.subtitle {
  margin: 10px 0 28px;
  color: #68766d;
}

.login-error {
  margin-bottom: 20px;
  padding: 12px 14px;
  border: 1px solid #e4b7b1;
  border-radius: 10px;
  background: #fff3f1;
  color: #97382c;
  font-size: 14px;
}

form {
  display: grid;
  gap: 10px;
}

label {
  margin-top: 7px;
  font-size: 14px;
  font-weight: 700;
}

input {
  width: 100%;
  min-height: 48px;
  padding: 10px 13px;
  border: 1px solid #c9d3cc;
  border-radius: 10px;
  background: #fff;
  color: #183126;
  font: inherit;
  outline: none;
}

input:focus {
  border-color: #397457;
  box-shadow: 0 0 0 3px rgba(57, 116, 87, 0.14);
}

button {
  min-height: 50px;
  margin-top: 14px;
  border: 0;
  border-radius: 11px;
  background: #285b43;
  color: #fff;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

button:hover {
  background: #1f4b36;
}

.security-note {
  margin: 22px 0 0;
  color: #849087;
  font-size: 12px;
  text-align: center;
}

@media (max-width: 480px) {
  .login-card {
    padding: 34px 24px 26px;
  }
}