:root {
  color-scheme: dark;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #080b10;
  color: #f7f5ef;
}

* { box-sizing: border-box; }

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

body {
  min-height: 100dvh;
  background:
    radial-gradient(circle at 72% 18%, rgba(74, 197, 214, 0.12), transparent 32rem),
    #080b10;
}

.login-shell {
  min-height: 100dvh;
  display: grid;
  padding: 1.5rem;
  place-items: center;
}

.login-panel {
  width: min(100%, 28rem);
  padding: clamp(1.5rem, 5vw, 2.5rem);
  border: 1px solid #2a3542;
  border-radius: 0.5rem;
  background: rgba(12, 16, 23, 0.96);
  box-shadow: 0 2rem 6rem rgba(0, 5, 10, 0.42);
}

form { display: grid; gap: 0.75rem; }

input {
  width: 100%;
  min-height: 3.15rem;
  padding: 0.8rem 0.9rem;
  border: 1px solid #435566;
  border-radius: 0.4rem;
  outline: none;
  background: #0b1017;
  color: #f7f5ef;
  font: inherit;
}

input:hover { border-color: #688398; }
input:focus { border-color: #7fd8dc; box-shadow: 0 0 0 2px rgba(127, 216, 220, 0.18); }

.login-error {
  margin: 0;
  color: #ffb4a8;
  font-size: 0.8rem;
  line-height: 1.45;
}

.login-error[hidden] { display: none; }

button {
  min-height: 3.15rem;
  margin-top: 0.45rem;
  padding: 0.85rem 1rem;
  border: 0;
  border-radius: 0.4rem;
  background: #7fd8dc;
  color: #10100e;
  font: inherit;
  font-size: 0.76rem;
  font-weight: 850;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
}

button:hover { background: #a1e6e8; }
button:focus-visible { outline: 2px solid #f7f5ef; outline-offset: 3px; }
button:active { transform: translateY(1px); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: 0.01ms !important; }
}