body {
  font-family: Arial, sans-serif;
  background-color: #f9fafb;
  margin: 0;
  padding: 0;
  color: #333;
}

header {
  background-color: #1e3a8a;
  color: white;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

header h1 {
  margin: 0;
  font-size: 1.5rem;
}

nav a {
  color: white;
  margin-left: 1rem;
  text-decoration: none;
  font-weight: bold;
}

nav a.button {
  background-color: #2563eb;
  padding: 0.5rem 1rem;
  border-radius: 4px;
}

main {
  max-width: 1750px;
  margin: 2rem auto;
  padding: 0 2rem;
}

footer {
  text-align: center;
}

section {
  background-color: white;
  padding: 2rem;
  border-radius: 8px;
  margin-bottom: 2rem;
  box-shadow: 0 2px 6px rgba(0,0,0,0.05);
}

h2 {
  margin-top: 0;
}

label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: bold;
}

input[type="text"],
input[type="password"],
input[type="number"] {
  padding: 0.5rem;
  border: 1px solid #ccc;
  border-radius: 4px;
}

button,
input[type="submit"] {
  background-color: #2563eb;
  color: white;
  border: none;
  padding: 0.5rem 1rem;
  margin-top: 1rem;
  border-radius: 4px;
  cursor: pointer;
}

.alert {
  margin-top: 2rem;
  background-color: #fef3c7;
  color: #92400e;
  border-left: 4px solid #f59e0b;
  padding: 1rem;
  border-radius: 4px;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
}

th, td {
  border-bottom: 1px solid #ddd;
  padding: 0.75rem;
  text-align: left;
}

#login td {
  border: 0px;
}

th {
  background-color: #f1f5f9;
}

td[colspan] {
  text-align: center;
  color: #888;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

#loader {
  text-align: center;
  margin-top: 20px;
  font-size: 1.2em;
}

.spinner {
  display: inline-block;
  margin-right: 10px;
  font-size: 1.5em;
  animation: spin 1s linear infinite;
}

.log-card {
  border: 1px solid #ccc;
  border-radius: 8px;
  background: #f9f9f9;
  box-shadow: 2px 2px 6px rgba(0, 0, 0, 0.05);
  margin-bottom: 20px;
  padding: 16px;
  width: 100%;
  max-width: 800px;
}

.log-card h3 {
  margin: 0;
  cursor: pointer;
  color: #1e3a8a;
}

.log-files {
  display: none;
  margin-top: 12px;
}

.log-entry {
  margin-bottom: 8px;
}

.log-entry a {
  color: #007BFF;
  text-decoration: none;
  cursor: pointer;
}

.log-content {
  margin-top: 6px;
  padding: 10px;
  background: #fff;
  border: 1px solid #eee;
  border-radius: 4px;
  max-height: 300px;
  overflow: auto;
  font-family: monospace;
  white-space: pre-wrap;
  display: none;
}

fieldset {
  border: 1px solid #ccc;
  padding: 1.5rem;
  border-radius: 8px;
  margin-bottom: 2rem;
}

legend {
  padding: 0 10px;
  font-weight: bold;
  color: #1e3a8a;
}