:root {
  --bg: #121212;
  --panel: #1e1e1e;
  --accent: #90caf9;
  --accent-hover: #64b5f6;
  --text: #e0e0e0;
  --muted: #a8a8a8;
  --error: #ff8a80;
}

* { box-sizing: border-box; }

body {
  min-height: 100vh;
  margin: 0;
  display: grid;
  place-items: center;
  padding: 1rem;
  font-family: "Trebuchet MS", sans-serif;
  color: var(--text);
  background: var(--bg);
}

main {
  width: min(100%, 360px);
  padding: 2rem;
  border: 1px solid #333;
  border-radius: 8px;
  background: var(--panel);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35);
}

h1 { margin: 0 0 0.5rem; font-size: 1.6rem; }
p { margin: 0 0 1.5rem; color: var(--muted); }
label { display: block; margin: 1rem 0 0.4rem; }

input {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid #555;
  border-radius: 6px;
  color: var(--text);
  background: #161616;
  font: inherit;
}

input:focus { outline: 2px solid var(--accent); outline-offset: 1px; }

button {
  width: 100%;
  margin-top: 1.5rem;
  padding: 0.75rem;
  border: 0;
  border-radius: 6px;
  color: #000;
  background: var(--accent);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

button:hover { background: var(--accent-hover); }
.message { display: none; margin: 0 0 1rem; color: var(--error); }