:root {
  --azul: #16389c;
  --azul-hondo: #0d2168;
  --papel: #f2f0ea;
  --chapa: #fbfbf9;
  --tinta: #14161c;
  --tinta-suave: #5d6070;
  --deuda: #b3261e;
  --borde: #d3cec0;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(120% 90% at 50% -10%, #fbfaf6 0%, var(--papel) 55%), var(--papel);
  font-family: "Archivo", system-ui, sans-serif;
  color: var(--tinta);
  -webkit-font-smoothing: antialiased;
}

.acceso {
  width: 100%;
  max-width: 340px;
  padding: 32px 28px 28px;
  background: var(--chapa);
  border: 1px solid var(--borde);
  border-radius: 14px;
  box-shadow: 0 1px 2px rgba(20, 22, 28, 0.06), 0 18px 40px -22px rgba(20, 22, 28, 0.4);
  margin: 24px;
}

.marca {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  margin-bottom: 24px;
}

.marca__chapa {
  background: var(--azul);
  color: #fff;
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.12em;
  padding: 3px 7px;
  border-radius: 3px;
}

.acceso__titulo {
  margin: 0 0 20px;
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.acceso__form {
  display: grid;
  gap: 14px;
}

.campo {
  display: grid;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--tinta-suave);
}

.campo input {
  width: 100%;
  border: 1.5px solid var(--borde);
  border-radius: 9px;
  padding: 11px 12px;
  font-family: inherit;
  font-size: 16px;
  color: var(--tinta);
  background: #fff;
}

.campo input:focus {
  outline: none;
  border-color: var(--azul);
  box-shadow: 0 0 0 3px rgba(22, 56, 156, 0.14);
}

.error {
  margin: 0;
  font-size: 13px;
  color: var(--deuda);
  font-weight: 500;
}

.entrar {
  margin-top: 6px;
  border: 0;
  border-radius: 9px;
  background: var(--tinta);
  color: #fff;
  font-family: inherit;
  font-size: 15px;
  font-weight: 600;
  padding: 12px;
  cursor: pointer;
  transition: background 0.15s;
}

.entrar:hover:not(:disabled) {
  background: #000;
}

.entrar:disabled {
  background: #9a978e;
  cursor: default;
}