/* Global styles */
:root {
  --primary-color: #007bff;
  --secondary-color: #6c757d;
  --success-color: #28a745;
  --danger-color: #dc3545;
  --warning-color: #ffc107;
  --info-color: #17a2b8;
  --light-color: #f8f9fa;
  --dark-color: #343a40;
  --text-color: #212529;
  --hover-bg: #e9ecef;
}

/* Typography */
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.5;
  color: var(--text-color);
}

/* Links */
a {
  color: var(--primary-color);
  text-decoration: none;
}

a:hover {
  color: #0056b3;
  text-decoration: underline;
}

/* Buttons */
.btn {
  display: inline-block;
  font-weight: 400;
  text-align: center;
  vertical-align: middle;
  user-select: none;
  border: 1px solid transparent;
  padding: 0.375rem 0.75rem;
  font-size: 1rem;
  line-height: 1.5;
  border-radius: 0.25rem;
  transition: color 0.15s ease-in-out, background-color 0.15s ease-in-out, border-color 0.15s ease-in-out;
}

/* Forms */
.form-control {
  display: block;
  width: 100%;
  padding: 0.375rem 0.75rem;
  font-size: 1rem;
  line-height: 1.5;
  color: var(--text-color);
  background-color: #fff;
  background-clip: padding-box;
  border: 1px solid #ced4da;
  border-radius: 0.25rem;
  transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

/* Tables */
.table {
  width: 100%;
  margin-bottom: 1rem;
  color: var(--text-color);
  border-collapse: collapse;
}

.table th,
.table td {
  padding: 0.75rem;
  vertical-align: top;
  border-top: 1px solid #dee2e6;
}

/* Cards */
.card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-width: 0;
  word-wrap: break-word;
  background-color: #fff;
  background-clip: border-box;
  border: 1px solid rgba(0, 0, 0, 0.125);
  border-radius: 0.25rem;
}

.card-body {
  flex: 1 1 auto;
  min-height: 1px;
  padding: 1.25rem;
}

/* Alerts */
.alert {
  position: relative;
  padding: 0.75rem 1.25rem;
  margin-bottom: 1rem;
  border: 1px solid transparent;
  border-radius: 0.25rem;
}

/* Utilities */
.text-center { text-align: center !important; }
.text-right { text-align: right !important; }
.text-left { text-align: left !important; }

.mt-3 { margin-top: 1rem !important; }
.mb-3 { margin-bottom: 1rem !important; }
.ml-3 { margin-left: 1rem !important; }
.mr-3 { margin-right: 1rem !important; }

.p-3 { padding: 1rem !important; }

/* Responsive utilities */
@media (max-width: 768px) {
  .d-md-none { display: none !important; }
}

@media (max-width: 576px) {
  .d-sm-none { display: none !important; }
}