:root {
  color-scheme: light dark;
  --bg: #f5f5f4;
  --card-bg: #ffffff;
  --text: #1c1c1c;
  --muted: #6b6b6b;
  --border: #e0e0e0;
  --accent: #2f6f4f;
  --accent-text: #ffffff;
  --danger: #b3413a;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

.auth-shell {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px 16px;
}

.auth-card {
  width: 100%;
  max-width: 420px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px 24px;
}

.admin-card {
  max-width: 640px;
}

h1 {
  margin: 0 0 8px;
  font-size: 1.4rem;
}

h2 {
  font-size: 1rem;
  margin: 24px 0 8px;
  color: var(--muted);
}

.auth-note {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.4;
}

.auth-error {
  color: var(--danger);
  font-size: 0.9rem;
  background: color-mix(in srgb, var(--danger) 10%, transparent);
  border-radius: 8px;
  padding: 8px 12px;
}

form {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

label {
  font-size: 0.85rem;
  color: var(--muted);
  margin-top: 8px;
}

input {
  padding: 10px 12px;
  font-size: 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  width: 100%;
}

button {
  margin-top: 16px;
  padding: 10px 12px;
  font-size: 1rem;
  border: none;
  border-radius: 8px;
  background: var(--accent);
  color: var(--accent-text);
  cursor: pointer;
}

button:active { opacity: 0.85; }

.auth-footer {
  margin-top: 18px;
  font-size: 0.9rem;
  text-align: center;
}

a { color: var(--accent); }

.user-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.user-list li {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}

.user-email {
  word-break: break-all;
}

.user-actions {
  display: flex;
  gap: 8px;
}

.user-actions form { display: inline; margin: 0; }

.user-actions button {
  margin-top: 0;
  padding: 6px 12px;
  font-size: 0.85rem;
}

.btn-reject {
  background: var(--danger);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #17181a;
    --card-bg: #202225;
    --text: #eaeaea;
    --muted: #9a9a9a;
    --border: #33353a;
  }
}