:root {
  --bg: #15130f;
  --surface: #221f19;
  --accent: #e3a008;
  --accent-active: #c78a00;
  --text: #f2efea;
  --danger: #e2574c;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}
form {
  background: var(--surface);
  padding: 2.5rem 2rem;
  border-radius: 14px;
  width: 90%;
  max-width: 320px;
  text-align: center;
}
h1 {
  color: var(--text);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin: 0 0 1.75rem;
}
input {
  width: 100%;
  padding: 0.9rem 1rem;
  font-size: 1.1rem;
  border-radius: 8px;
  border: 1px solid #3a352b;
  background: var(--bg);
  color: var(--text);
  margin-bottom: 1rem;
}
input:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}
button {
  width: 100%;
  padding: 0.9rem;
  font-size: 1.05rem;
  font-weight: 600;
  border-radius: 8px;
  border: none;
  background: var(--accent);
  color: #15130f;
  cursor: pointer;
}
button:active { background: var(--accent-active); }
.error { color: var(--danger); margin: 1rem 0 0; font-size: 0.9rem; }