:root {
  color-scheme: light;
  font-family: Arial, Helvetica, sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
}

body {
  margin: 0;
  background: #fff;
  color: #111;
}

.login-shell {
  display: grid;
  min-height: 100svh;
  place-items: center;
  padding: 2rem 1.25rem;
}

.login-panel {
  width: min(100%, 20rem);
}

.login-logo {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  width: min(100%, 19rem);
  margin: 0 auto 1.4rem;
  overflow: visible;
  line-height: 0;
}

.login-logo img {
  display: block;
  width: 100%;
  height: auto;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.login-logo:hover img {
  opacity: 0.95;
  transform: translateY(-1px);
}

.login-logo::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    120deg,
    transparent 0%,
    rgba(255, 255, 255, 0.4) 35%,
    rgba(255, 255, 255, 0.6) 50%,
    rgba(255, 255, 255, 0.4) 65%,
    transparent 100%
  );
  opacity: 0.9;
  mix-blend-mode: screen;
  pointer-events: none;
  animation: loginLogoHalo 3s ease-in-out infinite;
}

.login-logo:hover::after {
  animation-duration: 1.6s;
}

@keyframes loginLogoHalo {
  0% { transform: translateX(-80%); }
  50%, 100% { transform: translateX(120%); }
}

h1 {
  margin: 0 0 1.75rem;
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-align: center;
}

.login-form {
  display: grid;
  width: min(100%, 15rem);
  margin-inline: auto;
  gap: 1.15rem;
}

.login-field {
  display: grid;
  gap: 0.45rem;
}

.login-field label {
  font-size: 0.78rem;
  letter-spacing: 0.04em;
}

.login-field input {
  width: 100%;
  min-height: 2.8rem;
  padding: 0.65rem 0.75rem;
  border: 0;
  border-radius: 0.75rem;
  background: #f4f4f4;
  color: #333;
  font: inherit;
  transition: background-color 0.16s ease;
}

.login-field input::placeholder {
  color: #6b6b6b;
  opacity: 1;
}

.login-field input:focus {
  background: #ededed;
  outline: 0;
}

.login-submit {
  position: relative;
  justify-self: center;
  width: 0.6rem;
  height: 0.6rem;
  margin-top: 0.35rem;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: #c8102e;
  cursor: pointer;
  transition: background-color 160ms ease, transform 160ms ease;
}

.login-submit::after {
  content: "";
  position: absolute;
  inset: -0.8rem;
  border-radius: 50%;
}

.login-submit:hover,
.login-submit:focus-visible {
  background: #a90e27;
  outline: 0;
  transform: scale(1.08);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (prefers-reduced-motion: reduce) {
  .login-logo::after {
    animation: none;
  }

  .login-submit {
    transition: none;
  }

  .login-submit:hover,
  .login-submit:focus-visible {
    transform: none;
  }
}

.login-error {
  margin-bottom: 1rem;
  padding: 0.75rem;
  border: 1px solid #9f1d1d;
  color: #791414;
  font-size: 0.82rem;
}