/* CNA Institute - Clean Design System */

:root {
  /* Brand Colors */
  --color-primary: #0078CD;
  --color-primary-hover: #0065b3;
  --color-primary-light: #eff9ff;

  /* Neutral Colors */
  --color-gray-50: #fafafa;
  --color-gray-100: #f5f5f5;
  --color-gray-200: #e5e5e5;
  --color-gray-300: #d4d4d4;
  --color-gray-400: #a3a3a3;
  --color-gray-500: #737373;
  --color-gray-600: #525252;
  --color-gray-700: #404040;
  --color-gray-800: #262626;
  --color-gray-900: #171717;

  /* Status Colors */
  --color-success: #16a34a;
  --color-warning: #f59e0b;
  --color-danger: #dc2626;
  --color-info: #0ea5e9;

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;

  /* Borders */
  --border-radius: 0.5rem;
  --border-color: #e5e5e5;
}

/* Global Styles */
* {
  box-sizing: border-box;
}

body {
  font-family: var(--font-sans);
  color: var(--color-gray-900);
  background-color: var(--color-gray-50);
  font-size: 0.875rem;
  line-height: 1.25rem;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Clean Scrollbar */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: var(--color-gray-100);
}

::-webkit-scrollbar-thumb {
  background: var(--color-gray-300);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-gray-400);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  color: var(--color-gray-900);
}

h1 { font-size: 1.875rem; line-height: 2.25rem; }
h2 { font-size: 1.5rem; line-height: 2rem; }
h3 { font-size: 1.25rem; line-height: 1.75rem; }
h4 { font-size: 1.125rem; line-height: 1.75rem; }
h5 { font-size: 1rem; line-height: 1.5rem; }
h6 { font-size: 0.875rem; line-height: 1.25rem; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--border-radius);
  transition: all 150ms ease;
  cursor: pointer;
  border: 1px solid transparent;
  outline: none;
  text-decoration: none;
}

.btn:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.btn-primary {
  background-color: var(--color-primary);
  color: white;
}

.btn-primary:hover {
  background-color: var(--color-primary-hover);
}

.btn-secondary {
  background-color: white;
  color: var(--color-gray-700);
  border-color: var(--border-color);
}

.btn-secondary:hover {
  background-color: var(--color-gray-50);
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-gray-600);
}

.btn-ghost:hover {
  background-color: var(--color-gray-100);
  color: var(--color-gray-900);
}

/* Cards */
.card {
  background-color: white;
  border-radius: var(--border-radius);
  border: 1px solid var(--border-color);
  overflow: hidden;
}

.card-header {
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
  background-color: white;
}

.card-body {
  padding: 1.5rem;
}

.card-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border-color);
  background-color: var(--color-gray-50);
}

/* Forms */
.form-group {
  margin-bottom: 1rem;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-gray-700);
  margin-bottom: 0.5rem;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  background-color: white;
  transition: all 150ms ease;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0, 120, 205, 0.1);
}

/* Tables */
.table {
  width: 100%;
  border-collapse: collapse;
}

.table thead {
  background-color: var(--color-gray-50);
  border-bottom: 1px solid var(--border-color);
}

.table th {
  padding: 0.75rem 1rem;
  text-align: left;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-gray-600);
}

.table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border-color);
  font-size: 0.875rem;
  color: var(--color-gray-900);
}

.table tbody tr:hover {
  background-color: var(--color-gray-50);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.5rem;
  font-size: 0.75rem;
  font-weight: 500;
  border-radius: 0.25rem;
}

.badge-primary {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
}

.badge-success {
  background-color: #dcfce7;
  color: var(--color-success);
}

.badge-warning {
  background-color: #fef3c7;
  color: var(--color-warning);
}

.badge-danger {
  background-color: #fee2e2;
  color: var(--color-danger);
}

/* Alerts */
.alert {
  padding: 1rem;
  border-radius: var(--border-radius);
  border-left: 4px solid;
  margin-bottom: 1rem;
}

.alert-info {
  background-color: #f0f9ff;
  border-left-color: var(--color-info);
  color: #0c4a6e;
}

.alert-success {
  background-color: #dcfce7;
  border-left-color: var(--color-success);
  color: #14532d;
}

.alert-warning {
  background-color: #fef3c7;
  border-left-color: var(--color-warning);
  color: #713f12;
}

.alert-danger {
  background-color: #fee2e2;
  border-left-color: var(--color-danger);
  color: #7f1d1d;
}

/* Navigation */
.nav-item {
  display: flex;
  align-items: center;
  padding: 0.625rem 0.75rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-gray-600);
  text-decoration: none;
  border-radius: var(--border-radius);
  transition: all 150ms ease;
}

.nav-item:hover {
  background-color: var(--color-gray-50);
  color: var(--color-gray-900);
}

.nav-item.active {
  background-color: var(--color-gray-100);
  color: var(--color-gray-900);
}

.nav-icon {
  width: 1.25rem;
  height: 1.25rem;
  margin-right: 0.75rem;
  color: var(--color-gray-400);
}

.nav-item:hover .nav-icon,
.nav-item.active .nav-icon {
  color: var(--color-gray-500);
}

/* Utility Classes */
.text-primary { color: var(--color-primary); }
.text-secondary { color: var(--color-gray-600); }
.text-success { color: var(--color-success); }
.text-danger { color: var(--color-danger); }
.text-warning { color: var(--color-warning); }
.text-muted { color: var(--color-gray-500); }

.bg-primary { background-color: var(--color-primary); }
.bg-gray-50 { background-color: var(--color-gray-50); }
.bg-gray-100 { background-color: var(--color-gray-100); }
.bg-white { background-color: white; }

.border { border: 1px solid var(--border-color); }
.border-top { border-top: 1px solid var(--border-color); }
.border-bottom { border-bottom: 1px solid var(--border-color); }
.border-left { border-left: 1px solid var(--border-color); }
.border-right { border-right: 1px solid var(--border-color); }

.rounded { border-radius: var(--border-radius); }
.rounded-lg { border-radius: 0.75rem; }
.rounded-full { border-radius: 9999px; }

.shadow-sm { box-shadow: 0 1px 2px 0 rgb(0 0 0 / 0.05); }
.shadow { box-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1); }
.shadow-md { box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1); }
.shadow-lg { box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1); }