:root {
  /* Professional Light Theme Palette (Indigo & Slate) */
  --bg-primary: #f1f5f9;
  /* Slate 100 - Main Background */
  --bg-secondary: #ffffff;
  /* White - Component Background */

  --text-primary: #0f172a;
  /* Slate 900 - Headings & Body */
  --text-secondary: #64748b;
  /* Slate 500 - Muted Text */

  --accent-color: #4f46e5;
  /* Indigo 600 - Primary Brand */
  --accent-hover: #4338ca;
  /* Indigo 700 */
  --accent-light: #e0e7ff;
  /* Indigo 100 - Hover Backgrounds */

  --danger-color: #ef4444;
  /* Red 500 */
  --success-color: #10b981;
  /* Emerald 500 */
  --warning-color: #f59e0b;
  /* Amber 500 */

  --glass-border: #e2e8f0;
  /* Slate 200 - Borders */

  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  margin: 0;
  padding: 0;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  color: var(--text-primary);
  font-weight: 700;
  margin-top: 0;
  letter-spacing: -0.025em;
}

h1 {
  font-size: 2rem;
}

h2 {
  font-size: 1.5rem;
}

h3 {
  font-size: 1.25rem;
}

p {
  margin-bottom: 1rem;
  color: var(--text-secondary);
}

/* Links */
a {
  color: var(--accent-color);
  text-decoration: none;
  transition: color 0.2s;
}

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

/* Layout & Containers */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 2rem;
}

.card {
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 2rem;
  margin-bottom: 1.5rem;
}

/* Card Header Accent (Optional) */
.card-header {
  border-bottom: 1px solid var(--glass-border);
  padding-bottom: 1rem;
  margin-bottom: 1.5rem;
}

/* Navigation */
nav {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--glass-border);
  padding: 0.75rem 0;
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 50;
}

.nav-link {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.95rem;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-md);
  transition: all 0.2s;
}

.nav-link:hover {
  background-color: var(--bg-primary);
  color: var(--text-primary);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.6rem 1.2rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  transition: all 0.2s;
  border: 1px solid transparent;
  cursor: pointer;
  line-height: 1.25;
}

.btn-primary {
  background-color: var(--accent-color);
  color: white;
  box-shadow: var(--shadow-sm);
}

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

.btn-danger {
  background-color: var(--bg-secondary);
  color: var(--danger-color);
  border-color: var(--glass-border);
}

.btn-danger:hover {
  background-color: #fef2f2;
  /* Red 50 */
  border-color: #fecaca;
  /* Red 200 */
}

/* Forms */
.form-group {
  margin-bottom: 1.25rem;
}

label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.4rem;
  color: var(--text-primary);
  font-size: 0.9rem;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="date"],
select,
textarea {
  width: 100%;
  padding: 0.6rem 0.8rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--glass-border);
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.95rem;
  transition: border-color 0.15s, box-shadow 0.15s;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px var(--accent-light);
}

/* Tables */
.table-container {
  overflow-x: auto;
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  background: var(--bg-secondary);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

th {
  background-color: var(--bg-primary);
  color: var(--text-secondary);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--glass-border);
}

td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--glass-border);
  color: var(--text-primary);
}

tr:last-child td {
  border-bottom: none;
}

tr:hover {
  background-color: #f8fafc;
  /* Slate 50 */
}

/* Select2 Customization */
.select2-container .select2-selection--single {
  height: 42px !important;
  border: 1px solid var(--glass-border) !important;
  border-radius: var(--radius-md) !important;
  background-color: var(--bg-secondary) !important;
  display: flex !important;
  align-items: center !important;
}

.select2-container--default .select2-selection--single .select2-selection__rendered {
  line-height: normal !important;
  color: var(--text-primary) !important;
  padding-left: 12px !important;
}

.select2-container--default .select2-selection--single .select2-selection__arrow {
  height: 40px !important;
}

.select2-dropdown {
  border-color: var(--glass-border) !important;
  border-radius: var(--radius-md) !important;
  box-shadow: var(--shadow-lg) !important;
  background-color: var(--bg-secondary) !important;
}

.select2-search__field {
  border: 1px solid var(--glass-border) !important;
  border-radius: var(--radius-sm) !important;
}

.select2-results__option {
  padding: 8px 12px !important;
  color: var(--text-primary) !important;
  font-size: 0.95rem !important;
}

.select2-container--default .select2-results__option--highlighted.select2-results__option--selectable {
  background-color: var(--accent-color) !important;
  color: white !important;
}

/* Dropdown Menu */
.dropdown {
  position: relative;
  display: inline-block;
}

.dropdown-btn {
  color: var(--text-secondary);
  font-weight: 500;
  padding: 0.5rem 0.8rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  border-radius: var(--radius-md);
  transition: background-color 0.2s;
}

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

.dropdown-content {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 200px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  z-index: 1000;
  padding: 0.5rem;
  margin-top: 0.5rem;
}

.dropdown-content::before {
  content: "";
  position: absolute;
  top: -10px;
  left: 0;
  width: 100%;
  height: 10px;
}

.dropdown:hover .dropdown-content {
  display: block;
  animation: fadeIn 0.2s ease-out;
}

.dropdown-content a {
  display: block;
  padding: 0.6rem 1rem;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  margin-bottom: 2px;
}

.dropdown-content a:hover {
  background-color: var(--bg-primary);
  color: var(--accent-color);
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Helper Utilities */
.text-muted {
  color: var(--text-secondary) !important;
}

.text-danger {
  color: var(--danger-color) !important;
}

.bg-light {
  background-color: var(--bg-primary) !important;
}