:root {
  --primary-color: #2563eb;
  --primary-hover: #1d4ed8;
  --bg-color: #f3f4f6;
  --card-bg: #ffffff;
  --text-main: #1f2937;
  --text-muted: #4b5563;
  --border-color: #e5e7eb;
  --radius: 12px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
}

body {
  background-color: var(--bg-color);
  color: var(--text-main);
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  padding: 1.5rem;
}

main {
  width: 100%;
  max-width: 440px;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
  padding: 2.5rem;
  text-align: center;
}

h1 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text-main);
}

#status {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
  padding: 0.75rem;
  background-color: #f9fafb;
  border-radius: 8px;
  border: 1px dashed var(--border-color);
}

main > p {
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
}

main > p a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.2s;
}

main > p a:hover {
  color: var(--primary-hover);
  text-decoration: underline;
}

form {
  margin-top: 1rem;
}

button[type="submit"] {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: #ffffff;
  background-color: #ef4444;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background-color 0.2s;
}

button[type="submit"]:hover {
  background-color: #dc2626;
}