:root {
  color-scheme: dark;
  --bg0: #0c0b0f;
  --bg1: #16131c;
  --ink: #f4efe6;
  --muted: #a89f92;
  --line: rgba(244, 239, 230, 0.14);
  --accent: #c4a574;
  --danger: #e07a7a;
  --font-display: "Segoe UI", "Helvetica Neue", sans-serif;
  --font-body: "Segoe UI", "Helvetica Neue", sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: var(--font-body);
  color: var(--ink);
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(196, 165, 116, 0.18), transparent 60%),
    radial-gradient(900px 500px at 10% 110%, rgba(90, 70, 120, 0.2), transparent 55%),
    linear-gradient(160deg, var(--bg0), var(--bg1));
  display: grid;
  place-items: center;
  padding: 1.5rem;
}

.shell {
  width: min(100%, 26rem);
}

.brand {
  margin: 0 0 1.25rem;
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 8vw, 3.2rem);
  font-weight: 600;
  letter-spacing: 0.04em;
  line-height: 1;
}

h1 {
  margin: 0 0 0.5rem;
  font-size: 1.25rem;
  font-weight: 600;
}

.lede {
  margin: 0 0 1.5rem;
  color: var(--muted);
  line-height: 1.5;
  font-size: 0.95rem;
}

form {
  display: grid;
  gap: 0.65rem;
}

label {
  font-size: 0.85rem;
  color: var(--muted);
}

input {
  width: 100%;
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.35);
  color: var(--ink);
  border-radius: 0.5rem;
  padding: 0.85rem 0.95rem;
  font-size: 1rem;
}

input:focus {
  outline: 2px solid rgba(196, 165, 116, 0.55);
  outline-offset: 1px;
}

button {
  margin-top: 0.35rem;
  border: 0;
  border-radius: 0.5rem;
  padding: 0.9rem 1rem;
  background: var(--accent);
  color: #1a140c;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
}

button:hover {
  filter: brightness(1.05);
}

.error {
  margin: 0.25rem 0 0;
  color: var(--danger);
  font-size: 0.9rem;
}

.note {
  margin-top: 1.75rem;
  color: rgba(168, 159, 146, 0.75);
  font-size: 0.75rem;
  letter-spacing: 0.02em;
}