:root {
  color-scheme: light dark;
  --bg: #f4f5f7;
  --card: #ffffff;
  --text: #1c1f24;
  --muted: #646b75;
  --border: #d5d9df;
  --accent: #1f6feb;
  --accent-text: #ffffff;
  --error: #c62828;
  --error-bg: #fdecea;
  --info-bg: #e8f0fe;
  --success-bg: #e6f4ea;
  --danger: #c62828;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115;
    --card: #181b21;
    --text: #e6e8eb;
    --muted: #9aa1ab;
    --border: #2e333b;
    --accent: #4c8dff;
    --error: #ff8a80;
    --error-bg: #3a1d1d;
    --info-bg: #1b2a44;
    --success-bg: #1b3326;
    --danger: #d9443a;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: 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;
  padding: 32px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
}

.topbar { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 4px 12px; margin-bottom: 16px; }
.brand { font-weight: 700; color: var(--accent); }
.languages { display: flex; gap: 10px; }
.languages button { width: auto; padding: 0; font-size: 13px; font-weight: 500; color: var(--muted); background: none; }
.languages button[aria-current] { color: var(--text); font-weight: 600; }
.languages button:hover { text-decoration: underline; }
h1 { font-size: 24px; margin: 0 0 8px; }
h2 { font-size: 18px; margin: 24px 0 4px; }
.muted { color: var(--muted); margin: 0 0 16px; }

form > div { margin-bottom: 16px; }
label { display: block; font-weight: 500; margin-bottom: 4px; }

input[type="text"],
input[type="password"],
input[type="email"],
input[type="date"] {
  width: 100%;
  padding: 10px 12px;
  font: inherit;
  color: inherit;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 8px;
}
input:focus { outline: 2px solid var(--accent); outline-offset: 1px; }

.helptext { display: block; font-size: 13px; color: var(--muted); margin-top: 4px; }
.helptext ul { margin: 4px 0 0; padding-left: 18px; }

.errorlist { list-style: none; margin: 0 0 6px; padding: 0; color: var(--error); font-size: 14px; }
.errorlist.nonfield { background: var(--error-bg); padding: 8px 12px; border-radius: 8px; margin-bottom: 16px; }

button {
  width: 100%;
  padding: 11px 16px;
  font: inherit;
  font-weight: 600;
  color: var(--accent-text);
  background: var(--accent);
  border: 0;
  border-radius: 8px;
  cursor: pointer;
}
button.secondary { color: var(--text); background: transparent; border: 1px solid var(--border); }
button.danger { color: #ffffff; background: var(--danger); }
button.link-button { width: auto; padding: 0; margin-top: 12px; color: var(--accent); background: none; font-weight: 500; }

a { color: var(--accent); text-decoration: none; }
a:hover, button.link-button:hover { text-decoration: underline; }
a.danger-link { color: var(--error); }
.links { display: flex; justify-content: space-between; gap: 12px; margin: 16px 0 0; }

.messages { list-style: none; margin: 0 0 16px; padding: 0; }
.message { padding: 8px 12px; border-radius: 8px; margin-bottom: 8px; background: var(--info-bg); }
.message-error { background: var(--error-bg); color: var(--error); }
.message-success { background: var(--success-bg); }

.details { display: grid; grid-template-columns: auto 1fr; gap: 8px 16px; margin: 16px 0 24px; }
.details dt { color: var(--muted); }
.details dd { margin: 0; overflow-wrap: anywhere; }

.separated { margin-top: 24px; padding-top: 24px; border-top: 1px solid var(--border); }

.warnings { margin: 0 0 20px; padding-left: 20px; }
.warnings li { margin-bottom: 8px; }