:root {
  color: #18221c;
  background: #eef4ef;
  font-family:
    Inter, "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", system-ui,
    sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
}

.login-layout {
  display: grid;
  min-height: 100vh;
  place-items: center;
  padding: 32px 20px;
  background:
    radial-gradient(circle at 15% 10%, rgb(99 163 125 / 18%), transparent 35%),
    linear-gradient(145deg, #f7faf7, #e5efe7);
}

.login-card {
  width: min(100%, 420px);
  padding: 40px;
  border: 1px solid rgb(32 82 51 / 12%);
  border-radius: 22px;
  background: rgb(255 255 255 / 94%);
  box-shadow: 0 22px 60px rgb(26 67 42 / 14%);
}

.brand-mark {
  display: grid;
  width: 52px;
  height: 52px;
  place-items: center;
  border-radius: 15px;
  background: #1f7044;
  color: white;
  font-size: 24px;
  font-weight: 800;
}

.eyebrow {
  margin: 28px 0 8px;
  color: #42735a;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.14em;
}

h1 {
  margin: 0;
  font-size: clamp(26px, 6vw, 34px);
  letter-spacing: -0.035em;
}

.intro {
  margin: 10px 0 28px;
  color: #5f6e64;
}

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

label {
  margin-top: 8px;
  font-size: 14px;
  font-weight: 700;
}

input {
  width: 100%;
  min-height: 46px;
  padding: 10px 13px;
  border: 1px solid #bdc9c0;
  border-radius: 10px;
  background: white;
  color: inherit;
  font: inherit;
}

input:focus {
  border-color: #2a7950;
  outline: 3px solid rgb(42 121 80 / 16%);
}

button {
  min-height: 48px;
  margin-top: 16px;
  border: 0;
  border-radius: 11px;
  background: #1f7044;
  color: white;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

button:hover {
  background: #185c38;
}

button:disabled {
  cursor: wait;
  opacity: 0.62;
}

.error-message {
  margin: 8px 0 0;
  padding: 10px 12px;
  border-radius: 9px;
  background: #fff0f0;
  color: #a32323;
  font-size: 14px;
}

@media (max-width: 520px) {
  .login-card {
    padding: 30px 24px;
    border-radius: 18px;
  }
}