:root {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-tertiary: #334155;
  --bg-card: #1e293b;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent-primary: #3b82f6;
  --accent-primary-hover: #2563eb;
  --accent-success: #22c55e;
  --accent-warning: #f59e0b;
  --accent-danger: #ef4444;
  --accent-purple: #8b5cf6;
  --border-color: #334155;
  --border-focus: #3b82f6;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --transition-fast: 150ms ease;
  --transition-normal: 200ms ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

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

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.container-sm {
  max-width: 600px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Typography */
h1, h2, h3, h4 {
  font-weight: 600;
  line-height: 1.3;
}

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

/* Card */
.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-md);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
  gap: 1rem;
  flex-wrap: wrap;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 600;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
  background-color: var(--accent-primary-hover);
}

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

.btn-secondary:hover:not(:disabled) {
  background-color: #475569;
}

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

.btn-success:hover:not(:disabled) {
  background-color: #16a34a;
}

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

.btn-warning:hover:not(:disabled) {
  background-color: #d97706;
}

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

.btn-danger:hover:not(:disabled) {
  background-color: #dc2626;
}

.btn-ghost {
  background-color: transparent;
  color: var(--text-secondary);
}

.btn-ghost:hover:not(:disabled) {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
}

.btn-sm {
  padding: 0.375rem 0.75rem;
  font-size: 0.8125rem;
}

.btn-lg {
  padding: 0.875rem 1.75rem;
  font-size: 1rem;
}

.btn-icon {
  width: 2.25rem;
  height: 2.25rem;
  padding: 0;
}

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

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

.form-label .required {
  color: var(--accent-danger);
  margin-left: 0.25rem;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: 0.9375rem;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--text-muted);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.form-select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%2394a3b8' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
  background-position: right 0.75rem center;
  background-repeat: no-repeat;
  background-size: 1.25rem 1.25rem;
  padding-right: 2.5rem;
}

.form-select option {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
}

.form-hint {
  margin-top: 0.375rem;
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.form-error {
  color: var(--accent-danger);
  font-size: 0.8125rem;
  margin-top: 0.375rem;
}

.form-actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.5rem;
  flex-wrap: wrap;
}

/* Checkbox */
.checkbox-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.checkbox-input {
  width: 1.125rem;
  height: 1.125rem;
  border-radius: 0.25rem;
  border: 1px solid var(--border-color);
  background-color: var(--bg-primary);
  cursor: pointer;
  accent-color: var(--accent-primary);
}

/* Header */
.header {
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo svg {
  width: 1.5rem;
  height: 1.5rem;
  color: var(--accent-primary);
}

.nav-links {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

.nav-link {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  font-weight: 500;
  transition: color var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-primary);
}

/* Hero Section */
.hero {
  padding: 4rem 0;
  text-align: center;
}

.hero-title {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, var(--text-primary), var(--accent-primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* Info Box */
.info-box {
  background-color: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.3);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.info-box svg {
  width: 1.25rem;
  height: 1.25rem;
  color: var(--accent-primary);
  flex-shrink: 0;
  margin-top: 0.125rem;
}

.info-box p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* Success Box */
.success-box {
  background-color: rgba(34, 197, 94, 0.1);
  border: 1px solid rgba(34, 197, 94, 0.3);
  border-radius: var(--radius-lg);
  padding: 2rem;
  text-align: center;
}

.success-icon {
  width: 4rem;
  height: 4rem;
  background-color: rgba(34, 197, 94, 0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
}

.success-icon svg {
  width: 2rem;
  height: 2rem;
  color: var(--accent-success);
}

.success-title {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.success-message {
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.reference-id {
  display: inline-block;
  font-family: monospace;
  font-size: 1.25rem;
  font-weight: 600;
  padding: 0.75rem 1.5rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--accent-primary);
}

/* Badge */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.625rem;
  font-size: 0.75rem;
  font-weight: 500;
  border-radius: 9999px;
  white-space: nowrap;
}

.badge-queued { background-color: rgba(148, 163, 184, 0.2); color: #94a3b8; }
.badge-approved { background-color: rgba(59, 130, 246, 0.2); color: #60a5fa; }
.badge-in-progress { background-color: rgba(139, 92, 246, 0.2); color: #a78bfa; }
.badge-deferred { background-color: rgba(245, 158, 11, 0.2); color: #fbbf24; }
.badge-completed { background-color: rgba(34, 197, 94, 0.2); color: #4ade80; }
.badge-rejected { background-color: rgba(239, 68, 68, 0.2); color: #f87171; }

.badge-low { background-color: rgba(148, 163, 184, 0.2); color: #94a3b8; }
.badge-normal { background-color: rgba(59, 130, 246, 0.2); color: #60a5fa; }
.badge-high { background-color: rgba(245, 158, 11, 0.2); color: #fbbf24; }
.badge-urgent { background-color: rgba(239, 68, 68, 0.2); color: #f87171; }

/* Table */
.table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.table th,
.table td {
  padding: 0.875rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.table th {
  font-weight: 600;
  color: var(--text-secondary);
  background-color: var(--bg-tertiary);
  white-space: nowrap;
}

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

.table tr:hover td {
  background-color: rgba(255, 255, 255, 0.02);
}

.table td {
  vertical-align: middle;
}

/* Filters */
.filters {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
  padding: 1rem;
  background-color: var(--bg-tertiary);
  border-radius: var(--radius-md);
}

.filter-group {
  flex: 1;
  min-width: 150px;
}

.filter-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 0.375rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.filter-select {
  width: 100%;
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  cursor: pointer;
}

/* Batch Actions */
.batch-actions {
  display: flex;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  background-color: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.3);
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
  align-items: center;
  flex-wrap: wrap;
}

.batch-count {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-right: auto;
}

/* Pagination */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.25rem;
  margin-top: 1.5rem;
}

.pagination-btn {
  min-width: 2.25rem;
  height: 2.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  background-color: transparent;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.pagination-btn:hover:not(:disabled) {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
}

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

.pagination-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Login */
.login-wrapper {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.login-card {
  width: 100%;
  max-width: 400px;
}

.login-header {
  text-align: center;
  margin-bottom: 2rem;
}

.login-logo {
  width: 3rem;
  height: 3rem;
  margin: 0 auto 1rem;
  background-color: var(--accent-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-logo svg {
  width: 1.5rem;
  height: 1.5rem;
  color: white;
}

/* Admin Layout */
.admin-layout {
  display: flex;
  min-height: 100vh;
}

.admin-sidebar {
  width: 260px;
  background-color: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  z-index: 50;
}

.sidebar-header {
  padding: 1.25rem;
  border-bottom: 1px solid var(--border-color);
}

.sidebar-nav {
  flex: 1;
  padding: 1rem 0.75rem;
  overflow-y: auto;
}

.sidebar-section {
  margin-bottom: 1.5rem;
}

.sidebar-section-title {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  padding: 0 0.75rem;
  margin-bottom: 0.5rem;
}

.sidebar-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.625rem 0.75rem;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  transition: all var(--transition-fast);
}

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

.sidebar-link.active {
  background-color: var(--accent-primary);
  color: white;
}

.sidebar-link svg {
  width: 1.125rem;
  height: 1.125rem;
}

.sidebar-footer {
  padding: 1rem 0.75rem;
  border-top: 1px solid var(--border-color);
}

.admin-main {
  flex: 1;
  margin-left: 260px;
  min-height: 100vh;
}

.admin-header {
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 40;
}

.admin-content {
  padding: 1.5rem;
}

/* Stats */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.stat-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
}

.stat-label {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.stat-value {
  font-size: 1.75rem;
  font-weight: 600;
}

.stat-value.primary { color: var(--accent-primary); }
.stat-value.success { color: var(--accent-success); }
.stat-value.warning { color: var(--accent-warning); }
.stat-value.danger { color: var(--accent-danger); }

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  z-index: 1000;
}

.modal {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 500px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
}

.modal-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: 1.125rem;
  font-weight: 600;
}

.modal-close {
  width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

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

.modal-body {
  padding: 1.5rem;
}

.modal-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
}

/* Empty State */
.empty-state {
  padding: 3rem 1rem;
  text-align: center;
}

.empty-icon {
  width: 4rem;
  height: 4rem;
  margin: 0 auto 1rem;
  color: var(--text-muted);
}

.empty-title {
  font-size: 1.125rem;
  margin-bottom: 0.5rem;
}

.empty-message {
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

/* Alert */
.alert {
  padding: 1rem;
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.alert svg {
  width: 1.25rem;
  height: 1.25rem;
  flex-shrink: 0;
  margin-top: 0.125rem;
}

.alert-error {
  background-color: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #f87171;
}

.alert-success {
  background-color: rgba(34, 197, 94, 0.1);
  border: 1px solid rgba(34, 197, 94, 0.3);
  color: #4ade80;
}

.alert-warning {
  background-color: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.3);
  color: #fbbf24;
}

/* Loading */
.htmx-indicator {
  display: none;
}

.htmx-request .htmx-indicator {
  display: inline-block;
}

.htmx-request.htmx-indicator {
  display: inline-block;
}

.spinner {
  width: 1rem;
  height: 1rem;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Footer */
.footer {
  text-align: center;
  padding: 2rem;
  color: var(--text-muted);
  font-size: 0.875rem;
  border-top: 1px solid var(--border-color);
  margin-top: 3rem;
}

/* Responsive */
@media (max-width: 768px) {
  .admin-sidebar {
    transform: translateX(-100%);
    transition: transform var(--transition-normal);
  }
  
  .admin-sidebar.open {
    transform: translateX(0);
  }
  
  .admin-main {
    margin-left: 0;
  }
  
  .hero-title {
    font-size: 1.75rem;
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .filters {
    flex-direction: column;
  }
  
  .filter-group {
    min-width: 100%;
  }
}

/* Utility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

.text-muted { color: var(--text-muted); }
.text-secondary { color: var(--text-secondary); }
.text-primary-color { color: var(--accent-primary); }
.text-success { color: var(--accent-success); }
.text-warning { color: var(--accent-warning); }
.text-danger { color: var(--accent-danger); }

.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-4 { margin-top: 1rem; }
.mt-6 { margin-top: 1.5rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }

.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 0.5rem; }
.gap-4 { gap: 1rem; }

.truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 200px;
}