:root {
  --bg: #f5f6f8;
  --card: #ffffff;
  --text: #1d2333;
  --muted: #6b7280;
  --border: #e2e5ec;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --error: #c0392b;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.45;
}

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

.card {
  width: 100%;
  max-width: 420px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
  padding: 32px;
}

.card h1 {
  margin: 0 0 24px 0;
  font-size: 22px;
}

form { display: flex; flex-direction: column; gap: 14px; }

label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 14px;
  color: var(--muted);
}

input[type="text"], input[type="password"] {
  font-size: 16px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  color: var(--text);
}

input:focus { outline: 2px solid var(--accent); outline-offset: 1px; }

button {
  margin-top: 4px;
  padding: 12px;
  font-size: 16px;
  font-weight: 500;
  color: #fff;
  background: var(--accent);
  border: none;
  border-radius: 8px;
  cursor: pointer;
}

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

.error {
  margin: 0 0 16px 0;
  padding: 10px 12px;
  background: #fdecea;
  color: var(--error);
  border-radius: 8px;
  font-size: 14px;
}

.tenant-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.tenant-link {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  text-decoration: none;
  color: var(--text);
}

.tenant-link:hover { border-color: var(--accent); background: #f8faff; }
.tenant-link.current { border-color: var(--accent); background: #eef3ff; }

.tenant-name { font-weight: 500; }
.tenant-slug { color: var(--muted); font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 13px; }

.empty { color: var(--muted); text-align: center; padding: 16px 0; }

.footer { text-align: center; margin: 20px 0 0 0; font-size: 14px; }
.footer a { color: var(--muted); }