:root {
  --bg: #0e1116;
  --panel: #161b22;
  --border: #2a3038;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #4f8cff;
}

* { box-sizing: border-box; }

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

.center-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 2rem;
  width: 100%;
  max-width: 360px;
}

.panel h1 {
  margin-top: 0;
  font-size: 1.25rem;
}

label {
  display: block;
  margin: 1rem 0 0.25rem;
  font-size: 0.85rem;
  color: var(--muted);
}

input {
  width: 100%;
  padding: 0.5rem 0.6rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: #0d1117;
  color: var(--text);
}

button {
  margin-top: 1.5rem;
  width: 100%;
  padding: 0.6rem;
  border-radius: 6px;
  border: none;
  background: var(--accent);
  color: white;
  font-weight: 600;
  cursor: pointer;
}

button:hover { opacity: 0.9; }

.error { color: #f85149; font-size: 0.85rem; min-height: 1.2em; margin-top: 0.5rem; }

header.top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border);
}

nav#dashboard-nav a {
  color: var(--text);
  text-decoration: none;
  margin-right: 1rem;
  font-size: 0.9rem;
}

nav#dashboard-nav a:hover { color: var(--accent); }

main {
  padding: 2rem 1.5rem;
}

.muted { color: var(--muted); font-size: 0.85rem; }