:root {
  --bg: #f6f7f9;
  --fg: #1a1a1a;
  --muted: #666;
  --border: #ddd;
  --primary: #2667ff;
  --error: #c0392b;
  --card-bg: #ffffff;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--fg);
  padding: 2rem;
  line-height: 1.5;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
.error { color: var(--error); margin: 0; }
.hint { font-size: .85rem; color: var(--muted); margin: 0; }
.slm-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
}
.slm-header nav { display: flex; gap: 1rem; align-items: center; }
.slm-footer {
  padding: 1rem 0;
  margin-top: 2rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
}
.slm-login {
  display: grid;
  place-items: center;
  min-height: 70vh;
}
.slm-login-form {
  background: var(--card-bg);
  padding: 2rem;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0,0,0,.06);
  display: grid;
  gap: .75rem;
  min-width: 320px;
}
.slm-login-form label { display: grid; gap: .25rem; }
.slm-login-form input {
  padding: .55rem;
  border: 1px solid #ccc;
  border-radius: 4px;
  font: inherit;
}
.slm-login-form button {
  padding: .65rem;
  background: var(--primary);
  color: #fff;
  border: 0;
  border-radius: 4px;
  cursor: pointer;
  font: inherit;
}
.card {
  background: var(--card-bg);
  padding: 1rem 1.25rem;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,.05);
  margin-top: 1rem;
}
button {
  padding: .4rem .8rem;
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 4px;
  cursor: pointer;
  font: inherit;
}
button:hover { border-color: var(--primary); color: var(--primary); }