:root {
  --bg: #f6f7f9; --surface: #fff; --text: #1d2130; --muted: #6b7183; --border: #e3e5ec;
  --accent: #5B4BFF; --accent-text: #fff; --bad: #c62839;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #11131a; --surface: #1a1d27; --text: #eef0f6; --muted: #9aa0b4; --border: #2c3040; --accent: #7a6dff; --bad: #ff6b7a; }
}
* { box-sizing: border-box; }
body {
  margin: 0; min-height: 100vh; display: grid; place-items: center; padding: 16px;
  background: var(--bg); color: var(--text);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
.card {
  width: 100%; max-width: 400px; background: var(--surface); border: 1px solid var(--border);
  border-radius: 20px; padding: 32px 28px; box-shadow: 0 8px 30px rgb(0 0 0 / .06);
}
.logo { display: block; margin: 0 auto 12px; }
h1 { margin: 0 0 4px; font-size: 1.5rem; text-align: center; }
.muted { color: var(--muted); }
.small { font-size: .875rem; }
p.muted { text-align: center; margin: 0 0 20px; }
form { display: flex; flex-direction: column; gap: 14px; }
label { display: flex; flex-direction: column; gap: 6px; font-weight: 600; font-size: .9rem; }
input {
  font: inherit; padding: 11px 14px; border-radius: 12px; border: 1.5px solid var(--border);
  background: var(--bg); color: var(--text);
}
input:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: transparent; }
button {
  font: inherit; font-weight: 700; padding: 12px; border: 0; border-radius: 12px; cursor: pointer;
  background: var(--accent); color: var(--accent-text); margin-top: 4px;
}
button:hover { filter: brightness(1.08); }
button.link { background: none; color: var(--muted); padding: 0; margin: 0; font-weight: 600; text-decoration: underline; }
.notice { margin: 0 0 16px; padding: 10px 14px; border-radius: 12px; text-align: center; font-weight: 600; font-size: .9rem; background: color-mix(in srgb, var(--accent) 12%, var(--surface)); }
.error { color: var(--bad); font-weight: 600; margin: 0; font-size: .9rem; }
.row { display: flex; justify-content: space-between; align-items: center; margin-top: 16px; }
.row a { color: var(--accent); font-weight: 600; }
.card > .small { text-align: center; margin: 20px 0 0; }