:root {
  /* Dark Mode Color Palette */
  --bg-primary: #0f0f0f;
  --bg-secondary: #1a1a1a;
  --bg-tertiary: #252525;
  --bg-card: #1e1e1e;
  --bg-hover: #2a2a2a;

  /* Text Colors */
  --text-primary: #e8e8e8;
  --text-secondary: #b0b0b0;
  --text-muted: #707070;

  /* Accent Colors */
  --accent-primary: #3b82f6;
  --accent-primary-hover: #2563eb;
  --accent-success: #10b981;
  --accent-warning: #f59e0b;
  --accent-danger: #ef4444;
  --accent-info: #06b6d4;

  /* Border Colors */
  --border-primary: #333333;
  --border-secondary: #404040;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.5);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.6);

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;

  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;

  /* Typography */
  --font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  margin-bottom: var(--spacing-md);
  font-weight: 600;
  line-height: 1.2;
}

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

p {
  margin-bottom: var(--spacing-md);
}

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

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

/* Container */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

/* Header/Navigation */
header {
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-primary);
  padding: var(--spacing-md) 0;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
  background-color: rgba(26, 26, 26, 0.95);
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-lg);
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-primary);
  white-space: nowrap;
}

nav ul {
  list-style: none;
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
  margin: 0;
  padding: 0;
}

nav a {
  color: var(--text-secondary);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  white-space: nowrap;
}

nav a .icon {
  display: inline-block;
  width: 1.2em;
  text-align: center;
  margin-right: 0.5rem;
  font-size: 1em;
}

nav a:hover,
nav a.active {
  color: var(--text-primary);
  background-color: var(--bg-tertiary);
}

/* User Menu */
.user-menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.user-info {
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: var(--bg-tertiary);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-secondary);
}

/* Main Content */
main {
  padding: var(--spacing-xl) 0;
  min-height: calc(100vh - 200px);
}

/* Cards */
.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
  box-shadow: var(--shadow-md);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--border-secondary);
}

.card-title {
  font-size: 1.25rem;
  margin: 0;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm) var(--spacing-lg);
  border: none;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
  text-align: center;
  white-space: nowrap;
}

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

.btn-primary:hover {
  background-color: var(--accent-primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border-secondary);
}

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

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

.btn-success:hover {
  background-color: #059669;
}

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

.btn-danger:hover {
  background-color: #dc2626;
}

.btn-sm {
  padding: 0.25rem 0.75rem;
  font-size: 0.75rem;
}

.btn-lg {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: 1rem;
}

/* Forms */
.form-group {
  margin-bottom: var(--spacing-lg);
}

label {
  display: block;
  margin-bottom: var(--spacing-sm);
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.875rem;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="date"],
select,
textarea {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-secondary);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.875rem;
  transition: all 0.2s;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

textarea {
  resize: vertical;
  min-height: 100px;
}

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

table {
  width: 100%;
  border-collapse: collapse;
}

thead {
  background-color: var(--bg-tertiary);
}

th {
  padding: var(--spacing-md);
  text-align: left;
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--border-secondary);
}

td {
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--border-primary);
}

tbody tr {
  transition: background-color 0.2s;
}

tbody tr:hover {
  background-color: var(--bg-hover);
}

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

/* Badges */
.badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 500;
}

.badge-primary {
  background-color: rgba(59, 130, 246, 0.2);
  color: var(--accent-primary);
}

.badge-success {
  background-color: rgba(16, 185, 129, 0.2);
  color: var(--accent-success);
}

.badge-warning {
  background-color: rgba(245, 158, 11, 0.2);
  color: var(--accent-warning);
}

.badge-danger {
  background-color: rgba(239, 68, 68, 0.2);
  color: var(--accent-danger);
}

.badge-info {
  background-color: rgba(6, 182, 212, 0.2);
  color: var(--accent-info);
}

/* Grid System */
.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}
.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}
.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

/* Stats Cards */
.stat-card {
  background: linear-gradient(
    135deg,
    var(--bg-tertiary) 0%,
    var(--bg-card) 100%
  );
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  text-align: center;
}

.stat-value {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  background: linear-gradient(
    135deg,
    var(--accent-primary),
    var(--accent-info)
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  color: var(--text-secondary);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Search & Filters */
.search-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.search-bar input {
  flex: 1;
  min-width: 200px;
}

.search-bar select {
  min-width: 180px;
}

/* Pagination */
.pagination {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  justify-content: center;
  margin-top: var(--spacing-xl);
}

.pagination a,
.pagination span {
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-secondary);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  transition: all 0.2s;
  min-width: 40px;
  text-align: center;
}

.pagination a:hover {
  background-color: var(--bg-hover);
  color: var(--text-primary);
}

.pagination .active {
  background-color: var(--accent-primary);
  color: white;
  border-color: var(--accent-primary);
}

/* Alerts */
.alert {
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-lg);
}

.alert-success {
  background-color: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: var(--accent-success);
}

.alert-error {
  background-color: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: var(--accent-danger);
}

.alert-info {
  background-color: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.3);
  color: var(--accent-primary);
}

.alert-warning {
  background-color: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.3);
  color: var(--accent-warning);
}

/* Utilities */
.text-center {
  text-align: center;
}
.text-right {
  text-align: right;
}
.text-muted {
  color: var(--text-muted);
}
.text-small {
  font-size: 0.875rem;
}

.mt-1 {
  margin-top: var(--spacing-sm);
}
.mt-2 {
  margin-top: var(--spacing-md);
}
.mt-3 {
  margin-top: var(--spacing-lg);
}
.mb-1 {
  margin-bottom: var(--spacing-sm);
}
.mb-2 {
  margin-bottom: var(--spacing-md);
}
.mb-3 {
  margin-bottom: var(--spacing-lg);
}

.flex {
  display: flex;
}
.flex-between {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.flex-center {
  display: flex;
  align-items: center;
}
.gap-1 {
  gap: var(--spacing-sm);
}
.gap-2 {
  gap: var(--spacing-md);
}
.gap-3 {
  gap: var(--spacing-lg);
}

/* Hamburger Menu Button - Hidden by default on desktop */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.75rem;
  cursor: pointer;
  padding: var(--spacing-sm);
  transition: color 0.2s;
  line-height: 1;
}

.menu-toggle:hover {
  color: var(--accent-primary);
}

.menu-icon {
  display: block;
  width: 30px;
  height: 30px;
  text-align: center;
  line-height: 30px;
}

/* Responsive */
@media (max-width: 968px) {
  .header-content {
    flex-wrap: wrap;
  }

  /* Show hamburger menu button on mobile */
  .menu-toggle {
    display: block;
    order: 2;
  }

  .logo {
    order: 1;
    flex: 1;
  }

  .user-menu {
    order: 3;
    width: 100%;
    justify-content: flex-end;
    margin-top: var(--spacing-sm);
  }

  nav {
    order: 4;
    width: 100%;
    display: none; /* Hidden by default on mobile */
  }

  nav.active {
    display: block;
    animation: slideDown 0.3s ease-out;
  }

  @keyframes slideDown {
    from {
      opacity: 0;
      transform: translateY(-10px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  nav ul {
    flex-direction: column;
    gap: 0;
    margin-top: var(--spacing-md);
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
  }

  nav li {
    width: 100%;
  }

  nav a {
    display: flex;
    width: 100%;
    padding: var(--spacing-md);
    border-radius: 0;
    border-bottom: 1px solid var(--border-primary);
  }

  nav a .icon {
    width: 1.5em;
    margin-right: 0.75rem;
  }

  nav li:last-child a {
    border-bottom: none;
  }

  nav a:hover,
  nav a.active {
    background-color: var(--bg-hover);
  }
}

@media (max-width: 768px) {
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .search-bar {
    flex-direction: column;
  }

  .search-bar input,
  .search-bar select {
    width: 100%;
  }

  .card-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-md);
  }

  .flex-between {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-md);
  }

  h1 {
    font-size: 1.5rem;
  }

  .container {
    padding: 0 var(--spacing-md);
  }

  .stat-value {
    font-size: 2rem;
  }

  /* Better table responsiveness */
  .table-container {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  table {
    font-size: 0.85rem;
  }

  th,
  td {
    padding: var(--spacing-sm) var(--spacing-sm);
    white-space: nowrap;
  }

  /* Stack action buttons vertically on very small screens */
  td .flex {
    flex-wrap: wrap;
  }

  /* Better button sizing for mobile */
  .btn {
    font-size: 0.8rem;
    padding: var(--spacing-sm) var(--spacing-md);
  }

  .btn-sm {
    padding: 0.2rem 0.5rem;
    font-size: 0.7rem;
  }

  /* Modal improvements for mobile */
  .modal {
    width: 95%;
    max-height: 85vh;
  }

  .modal-header,
  .modal-body,
  .modal-footer {
    padding: var(--spacing-md);
  }
}

@media (max-width: 480px) {
  /* Ultra-compact design for phones */
  :root {
    --spacing-xs: 0.15rem;
    --spacing-sm: 0.35rem;
    --spacing-md: 0.65rem;
    --spacing-lg: 1rem;
    --spacing-xl: 1.25rem;
  }
  
  h1 {
    font-size: 1.15rem;
    margin-bottom: 0.5rem;
  }
  
  h3 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
  }
  
  .card {
    padding: 0.75rem;
    margin-bottom: 0.75rem;
  }
  
  .stat-value {
    font-size: 1.5rem;
  }
  
  .stat-label {
    font-size: 0.7rem;
  }
  
  /* Compact cards grid - 3x3 layout */
  .table-container {
    border: none;
    overflow: visible;
  }
  
  table {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
    font-size: 0.75rem;
  }
  
  thead {
    display: none;
  }
  
  tbody {
    display: contents;
  }
  
  tr {
    display: flex;
    flex-direction: column;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
    border-radius: 8px;
    padding: 0.5rem;
    min-height: 120px;
    justify-content: space-between;
  }
  
  td {
    display: block;
    text-align: center;
    padding: 0.2rem 0;
    border: none;
    font-size: 0.7rem;
  }
  
  /* Show only most important data in cards */
  td:nth-child(1) { /* ID */
    display: none;
  }
  
  td:nth-child(2) { /* Main info */
    font-weight: 600;
    font-size: 0.8rem;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
  }
  
  td:nth-child(3) { /* Secondary info */
    color: var(--text-secondary);
    font-size: 0.65rem;
  }
  
  td:nth-child(4) { /* Badge/Status */
    margin: 0.25rem 0;
  }
  
  /* Hide extra columns */
  td:nth-child(n+5):not(:last-child) {
    display: none;
  }
  
  /* Actions always visible */
  td:last-child {
    display: flex;
    gap: 0.25rem;
    margin-top: 0.25rem;
  }
  
  td:last-child .btn,
  td:last-child a {
    flex: 1;
    padding: 0.3rem 0.25rem;
    font-size: 0.65rem;
    min-height: 32px;
  }
  
  /* Compact badges */
  .badge {
    padding: 0.15rem 0.4rem;
    font-size: 0.65rem;
  }
  
  /* Compact buttons */
  .btn {
    padding: 0.4rem 0.65rem;
    font-size: 0.75rem;
    min-height: 36px;
  }
  
  .btn-sm {
    padding: 0.25rem 0.4rem;
    font-size: 0.65rem;
    min-height: 28px;
  }
  
  /* Compact forms */
  input, select, textarea {
    padding: 0.4rem 0.6rem;
    font-size: 0.85rem;
    min-height: 38px;
  }
  
  label {
    font-size: 0.75rem;
    margin-bottom: 0.25rem;
  }
  
  .form-group {
    margin-bottom: 0.75rem;
  }
  
  /* Compact grid */
  .grid {
    gap: 0.5rem;
  }
  
  /* Simple pagination for mobile */
  .pagination {
    gap: 0.25rem;
    margin-top: 0.75rem;
  }
  
  .pagination a,
  .pagination span {
    padding: 0.35rem 0.5rem;
    font-size: 0.75rem;
    min-width: 32px;
  }
  
  /* Reduce card header size */
  .card-header {
    padding-bottom: 0.5rem;
    margin-bottom: 0.5rem;
  }
  
  .card-title {
    font-size: 1rem;
  }
  
  /* Compact stat cards */
  .stat-card {
    padding: 0.65rem;
  }
  
  /* Compact alerts */
  .alert {
    padding: 0.5rem;
    font-size: 0.8rem;
    margin-bottom: 0.75rem;
  }
}


/* Loading Spinner */
.spinner {
  border: 3px solid var(--bg-tertiary);
  border-top: 3px solid var(--accent-primary);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  animation: spin 1s linear infinite;
  margin: 0 auto;
}

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

/* Modal */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.7);
  z-index: 1000;
  backdrop-filter: blur(4px);
}

.modal-overlay.active {
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal {
  background-color: var(--bg-card);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  max-width: 600px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
}

.modal-header {
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--border-secondary);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-body {
  padding: var(--spacing-lg);
}

.modal-footer {
  padding: var(--spacing-lg);
  border-top: 1px solid var(--border-secondary);
  display: flex;
  justify-content: flex-end;
  gap: var(--spacing-md);
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 0;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: all 0.2s;
}

.modal-close:hover {
  background-color: var(--bg-hover);
  color: var(--text-primary);
}

/* Autocomplete */
.autocomplete-results {
  position: absolute;
  z-index: 1000;
  background-color: var(--bg-card);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
  max-height: 300px;
  overflow-y: auto;
  margin-top: 2px;
  box-shadow: var(--shadow-lg);
  display: none;
  width: 100%;
}

.autocomplete-item {
  padding: var(--spacing-md);
  cursor: pointer;
  border-bottom: 1px solid var(--border-primary);
  transition: background-color 0.2s;
}

.autocomplete-item:last-child {
  border-bottom: none;
}

.autocomplete-item:hover {
  background-color: var(--bg-hover);
}

.autocomplete-item strong {
  color: var(--text-primary);
}

.autocomplete-item small {
  color: var(--text-muted);
  margin-left: 0.5rem;
}