:root {
  color-scheme: light;
  font-family: Inter, "Microsoft YaHei", Arial, sans-serif;
  background: #eef3f7;
  color: #17212b;
}

* { box-sizing: border-box; }

body { margin: 0; }

.login-shell {
  display: grid;
  min-height: 100vh;
  place-items: center;
  padding: 24px;
  background:
    radial-gradient(circle at 15% 15%, rgb(22 119 210 / 14%), transparent 34%),
    radial-gradient(circle at 86% 84%, rgb(25 167 168 / 14%), transparent 32%),
    #eef3f7;
}

.login-card {
  width: min(420px, 100%);
  border: 1px solid #dce5ec;
  border-radius: 16px;
  padding: 34px;
  background: #fff;
  box-shadow: 0 20px 60px rgb(31 62 88 / 14%);
}

.eyebrow {
  margin: 0;
  color: #1677d2;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 1.5px;
}

h1 {
  margin: 7px 0 6px;
  font-size: 27px;
  letter-spacing: -.5px;
}

.intro {
  margin: 0 0 25px;
  color: #6b7a8a;
}

form, label {
  display: grid;
  gap: 8px;
}

form { gap: 17px; }

label {
  color: #455c70;
  font-size: 13px;
  font-weight: 700;
}

input {
  width: 100%;
  height: 44px;
  border: 1px solid #cbd8e2;
  border-radius: 8px;
  padding: 0 12px;
  outline: none;
  font: inherit;
}

input:focus {
  border-color: #1677d2;
  box-shadow: 0 0 0 3px rgb(22 119 210 / 12%);
}

button {
  height: 44px;
  border: 0;
  border-radius: 8px;
  background: linear-gradient(135deg, #1677d2, #159d9f);
  color: #fff;
  cursor: pointer;
  font-size: 14px;
  font-weight: 800;
}

button:disabled { cursor: wait; opacity: .7; }

.error {
  min-height: 20px;
  margin: -7px 0 -8px;
  color: #cf3652;
  font-size: 12px;
}

small {
  display: block;
  margin-top: 21px;
  color: #8a9aaa;
  text-align: center;
}