:root {
  color-scheme: light;
  font-family: "Trebuchet MS", "Segoe UI", Arial, sans-serif;
  background: #2c2a2a;
  color: #302f2f;
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  background:
    linear-gradient(rgba(30, 29, 29, 0.74), rgba(30, 29, 29, 0.9)),
    radial-gradient(circle at 20% 10%, #486f80 0, transparent 34%),
    radial-gradient(circle at 85% 85%, #3a2a1a 0, transparent 32%),
    #2c2a2a;
}

.page-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 2rem 1rem;
}

.login-card {
  width: min(100%, 31rem);
  padding: clamp(1.75rem, 5vw, 3rem);
  border-radius: 0.75rem;
  background: rgba(255, 255, 255, 0.97);
  box-shadow: 0 1.5rem 4rem rgba(0, 0, 0, 0.34);
  border-top: 0.3rem solid #2d7ab8;
}

.brand-logo {
  display: block;
  width: min(100%, 18rem);
  height: auto;
  margin: 0 auto 2.2rem;
  padding: 1rem 1.25rem;
  border-radius: 0.55rem;
  background: #2c2a2a;
  box-shadow: 0 0.35rem 1rem rgba(0, 0, 0, 0.18);
}

.eyebrow {
  margin: 0 0 0.45rem;
  color: #2d7ab8;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1 {
  margin: 0 0 0.8rem;
  color: #272626;
  font-size: clamp(2rem, 7vw, 2.8rem);
  font-weight: 700;
  line-height: 1.05;
}

.intro,
.hint {
  line-height: 1.6;
}

.intro {
  margin: 0 0 1.7rem;
  color: #5b5959;
}

.hint {
  margin: 1.25rem 0 0;
  color: #777474;
  font-size: 0.86rem;
}

form {
  display: grid;
  gap: 0.7rem;
}

label {
  color: #3b3939;
  font-size: 0.92rem;
  font-weight: 700;
}

input {
  width: 100%;
  min-height: 3.15rem;
  padding: 0.75rem 0.9rem;
  border: 1px solid #bbb7b4;
  border-radius: 0.38rem;
  background: #fff;
  color: #272626;
  font: inherit;
}

input:focus {
  border-color: #2d7ab8;
  outline: 0.2rem solid rgba(45, 122, 184, 0.2);
}

button {
  min-height: 3.15rem;
  margin-top: 0.45rem;
  padding: 0.75rem 1rem;
  border: 0;
  border-radius: 0.38rem;
  background: linear-gradient(135deg, #1a5490, #2d7ab8);
  color: #fff;
  cursor: pointer;
  font: inherit;
  font-weight: 700;
  letter-spacing: 0.01em;
  transition: filter 160ms ease, transform 160ms ease;
}

button:hover {
  filter: brightness(1.08);
  transform: translateY(-1px);
}

button:focus-visible,
.secondary-link:focus-visible {
  outline: 0.2rem solid rgba(45, 122, 184, 0.35);
  outline-offset: 0.18rem;
}

.message {
  margin: 0 0 1.2rem;
  padding: 0.8rem 0.9rem;
  border-radius: 0.38rem;
  line-height: 1.45;
}

.error {
  border-left: 0.25rem solid #a6372d;
  background: #f8e8e6;
  color: #7d2821;
}

.secondary-link {
  display: inline-block;
  margin-top: 1.4rem;
  color: #1a5490;
  font-weight: 700;
  text-decoration: none;
}

.secondary-link:hover {
  text-decoration: underline;
}

@media (max-width: 30rem) {
  .page-shell {
    padding: 0;
  }

  .login-card {
    min-height: 100vh;
    border-radius: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  button {
    transition: none;
  }
}