:root {
  color-scheme: dark;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #080b10;
  color: #f8fafc;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top left, rgba(6, 182, 212, 0.16), transparent 32rem),
    linear-gradient(135deg, #080b10 0%, #111827 58%, #0b1017 100%);
}

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

.login-panel {
  width: min(100%, 28rem);
  border: 1px solid rgba(148, 163, 184, 0.22);
  border-radius: 0.75rem;
  background: rgba(15, 23, 42, 0.84);
  box-shadow: 0 1.5rem 5rem rgba(0, 0, 0, 0.42);
  padding: 1.5rem;
}

.brand-mark {
  display: grid;
  width: 2.5rem;
  height: 2.5rem;
  place-items: center;
  border-radius: 0.5rem;
  background: #06b6d4;
  color: #021014;
  font-weight: 800;
}

.eyebrow,
.footnote {
  color: #94a3b8;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1 {
  margin: 0.75rem 0 0;
  font-size: 1.65rem;
  line-height: 1.15;
}

.subtitle {
  margin: 0.65rem 0 1.25rem;
  color: #cbd5e1;
  line-height: 1.5;
}

.error {
  border: 1px solid rgba(239, 68, 68, 0.45);
  border-radius: 0.5rem;
  background: rgba(127, 29, 29, 0.22);
  color: #fecaca;
  padding: 0.75rem;
}

form {
  display: grid;
  gap: 0.9rem;
}

label {
  display: grid;
  gap: 0.45rem;
  color: #bfdbfe;
  font-size: 0.9rem;
}

input {
  width: 100%;
  border: 1px solid rgba(148, 163, 184, 0.35);
  border-radius: 0.5rem;
  background: #05070b;
  color: #f8fafc;
  font: inherit;
  padding: 0.75rem 0.85rem;
}

input:focus {
  border-color: #06b6d4;
  outline: 2px solid rgba(6, 182, 212, 0.24);
}

button {
  border: 0;
  border-radius: 0.5rem;
  background: #06b6d4;
  color: #021014;
  cursor: pointer;
  font: inherit;
  font-weight: 800;
  padding: 0.8rem 1rem;
}

button:hover {
  background: #22d3ee;
}