:root {
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #090b0e;
  color: #f4f7fb;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 80% 10%, rgba(255,255,255,.08), transparent 28rem),
    #090b0e;
}

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

.login-card {
  width: min(100%, 420px);
  padding: 30px;
  border: 1px solid #242a31;
  border-radius: 22px;
  background: rgba(18, 21, 26, .92);
  box-shadow: 0 30px 90px rgba(0,0,0,.35);
}

.eyebrow {
  margin: 0 0 8px;
  text-transform: uppercase;
  letter-spacing: .18em;
  font-size: 11px;
  opacity: .5;
}

h1 {
  margin: 0;
  font-size: 36px;
  letter-spacing: -.04em;
}

.subtitle {
  margin: 8px 0 26px;
  opacity: .58;
}

form {
  display: grid;
  gap: 16px;
}

label {
  display: grid;
  gap: 8px;
  font-size: 13px;
  font-weight: 650;
}

input, button { font: inherit; }

input {
  width: 100%;
  padding: 13px 14px;
  color: #f4f7fb;
  background: #0d1014;
  border: 1px solid #2c333c;
  border-radius: 12px;
  outline: none;
}

input:focus {
  border-color: #7b8797;
}

button {
  margin-top: 4px;
  padding: 13px 16px;
  border: 0;
  border-radius: 12px;
  background: #f4f7fb;
  color: #090b0e;
  font-weight: 750;
  cursor: pointer;
}

button:disabled {
  opacity: .55;
  cursor: wait;
}

.message {
  margin-top: 16px;
  padding: 12px;
  border: 1px solid #713838;
  border-radius: 11px;
  background: #170f10;
  font-size: 13px;
}

.hidden { display: none; }