:root {
  color-scheme: light;
  --bg: #f4f6f9;
  --panel: #ffffff;
  --border: #d8dee9;
  --text: #1f2937;
  --muted: #6b7280;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --danger-bg: #fef2f2;
  --danger-border: #fecaca;
  --danger-text: #b91c1c;
  --success-bg: #ecfdf5;
  --success-border: #a7f3d0;
  --success-text: #047857;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 1.5rem;
  font-family: "Segoe UI", system-ui, sans-serif;
  background: linear-gradient(180deg, #0f172a 0%, #111827 40%, var(--bg) 40%);
  color: var(--text);
}

.auth-card {
  width: min(100%, 28rem);
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  padding: 2rem;
  box-shadow: 0 20px 40px rgba(15, 23, 42, 0.12);
}

.auth-card-wide {
  width: min(100%, 40rem);
}

.eyebrow {
  margin: 0 0 0.35rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #2563eb;
}

h1 {
  margin: 0 0 0.5rem;
  font-size: 1.5rem;
  letter-spacing: -0.02em;
}

.intro {
  margin: 0 0 1.5rem;
  color: var(--muted);
  font-size: 0.95rem;
}

label {
  display: block;
  margin-bottom: 0.35rem;
  font-size: 0.9rem;
  font-weight: 600;
}

input {
  width: 100%;
  margin-bottom: 1rem;
  padding: 0.7rem 0.8rem;
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  font: inherit;
}

input:focus {
  outline: 2px solid rgba(37, 99, 235, 0.25);
  border-color: var(--accent);
}

button,
.button-link {
  display: inline-block;
  width: 100%;
  padding: 0.75rem 1rem;
  border: none;
  border-radius: 0.5rem;
  background: var(--accent);
  color: #fff;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  text-align: center;
  text-decoration: none;
}

button:hover,
.button-link:hover {
  background: var(--accent-hover);
}

.secondary-link {
  display: inline-block;
  margin-top: 1rem;
  color: var(--muted);
  font-size: 0.9rem;
  text-decoration: none;
}

.secondary-link:hover {
  color: var(--accent);
}

.message {
  margin: 0 0 1rem;
  padding: 0.75rem 0.9rem;
  border-radius: 0.5rem;
  font-size: 0.9rem;
}

.message-error {
  border: 1px solid var(--danger-border);
  background: var(--danger-bg);
  color: var(--danger-text);
}

.message-success {
  border: 1px solid var(--success-border);
  background: var(--success-bg);
  color: var(--success-text);
}

.help {
  margin: 1rem 0 0;
  color: var(--muted);
  font-size: 0.85rem;
}

.user-list {
  margin: 1.5rem 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--border);
}

.user-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.92rem;
}

.user-list-main {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  min-width: 0;
}

.user-list-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

.remove-user-btn {
  width: auto;
  padding: 0.45rem 0.75rem;
  border: 1px solid var(--danger-border);
  border-radius: 0.45rem;
  background: #fff;
  color: var(--danger-text);
  font: inherit;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
}

.remove-user-btn:hover {
  background: var(--danger-bg);
}

.user-meta {
  color: var(--muted);
  font-size: 0.82rem;
}