:root {
  color-scheme: dark;
  --accent: #ffbf2e;
  --cyan: #32c7ff;
  --red: #ff3d36;
}

* {
  box-sizing: border-box;
}

body {
  display: grid;
  place-items: center;
  min-height: 100vh;
  margin: 0;
  padding: 20px;
  background:
    linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px) 0 0 / 44px 44px,
    linear-gradient(180deg, rgba(255, 191, 46, .07), transparent 300px),
    radial-gradient(circle at 18% 0, rgba(50, 199, 255, .12), transparent 34%),
    #0d0f13;
  color: #f5f7fb;
  font-family: Arial, sans-serif;
}

.login-shell {
  width: min(430px, 100%);
  border-top: 3px solid var(--accent);
  background: #171b22;
  box-shadow: 0 24px 70px rgba(0,0,0,.48);
}

.login-brand {
  padding: 24px 26px 18px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}

.login-brand span {
  color: var(--accent);
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

.login-brand h1 {
  margin: 3px 0 0;
  font-size: 42px;
}

.login-brand p {
  margin: 5px 0 0;
  color: #9ca7b6;
  font-size: 14px;
}

.login-form {
  display: grid;
  gap: 14px;
  padding: 24px 26px 28px;
}

.login-form label {
  display: grid;
  gap: 6px;
  color: #b8c1ce;
  font-size: 11px;
  font-weight: 900;
  text-transform: uppercase;
}

.login-form input {
  width: 100%;
  min-height: 48px;
  padding: 10px 12px;
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 0;
  outline: none;
  background: #0b0f15;
  color: #fff;
  font: inherit;
}

.login-form input:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 0 2px rgba(50, 199, 255, .12);
}

.login-form button {
  min-height: 50px;
  margin-top: 4px;
  border: 0;
  border-radius: 0;
  background: var(--accent);
  color: #171000;
  cursor: pointer;
  font-size: 15px;
  font-weight: 900;
  text-transform: uppercase;
}

.login-error {
  margin: 0;
  padding: 9px 10px;
  border-left: 3px solid var(--red);
  background: rgba(255, 61, 54, .1);
  color: #ffb0ac;
  font-size: 13px;
}