/* Twenty-inspired admin login — dark, calm, centered */
:root {
  --bg: #141414;
  --fg: #ededed;
  --muted: #8b8b8b;
  --line: #2c2c2c;
  --card: #1a1a1a;
  --btn: #ffffff;
  --btn-fg: #141414;
  --danger: #f87171;
  --font: "Inter", system-ui, sans-serif;
  --serif: "Instrument Serif", Georgia, serif;
}
* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body.admin-login {
  font-family: var(--font);
  background: var(--bg);
  color: var(--fg);
  display: grid;
  place-items: center;
  min-height: 100%;
  padding: 1.5rem;
}
.login-shell {
  width: min(380px, 100%);
  text-align: center;
}
.login-mark {
  width: 40px;
  height: 40px;
  margin: 0 auto 1.75rem;
  border-radius: 10px;
  background: #000;
  border: 1px solid #333;
  display: grid;
  place-items: center;
  font-family: var(--serif);
  font-size: 1.35rem;
  color: #fff;
}
h1 {
  font-family: var(--font);
  font-weight: 500;
  font-size: 1.35rem;
  margin: 0 0 0.5rem;
  letter-spacing: -0.02em;
}
.login-sub {
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.45;
  margin: 0 0 1.75rem;
}
.login-form { display: grid; gap: 0.85rem; text-align: left; }
.field { display: grid; gap: 0.4rem; font-size: 0.8rem; font-weight: 500; color: var(--muted); }
.field input {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.75rem 0.9rem;
  color: var(--fg);
  font: inherit;
  outline: none;
}
.field input:focus { border-color: #555; }
.btn-primary {
  margin-top: 0.35rem;
  width: 100%;
  border: none;
  border-radius: 10px;
  padding: 0.8rem 1rem;
  background: var(--btn);
  color: var(--btn-fg);
  font: inherit;
  font-weight: 500;
  cursor: pointer;
}
.btn-primary:hover { opacity: 0.92; }
.err { color: var(--danger); font-size: 0.85rem; margin: 0; }
.login-back {
  display: inline-block;
  margin-top: 1.5rem;
  color: var(--muted);
  font-size: 0.85rem;
  text-decoration: none;
}
.login-back:hover { color: var(--fg); }
.login-legal {
  margin-top: 2.5rem;
  font-size: 0.72rem;
  color: #555;
  line-height: 1.4;
}