:root {
  --primary-color: #3b82f6;
  --primary-hover: #2563eb;
  --bg-dark: #0f172a;
  --card-dark: #1e293b;
  --border-dark: #334155;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --sidebar-width: 260px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background-color: #0b0f19;
  color: var(--text-main);
  min-height: 100vh;
  margin: 0;
}

/* Sidebar styling */
.sidebar {
  width: var(--sidebar-width);
  height: 100vh;
  position: fixed;
  top: 0;
  left: 0;
  background-color: var(--card-dark);
  border-right: 1px solid var(--border-dark);
  display: flex;
  flex-direction: column;
  z-index: 1000;
}

.sidebar .brand {
  padding: 1.5rem 1.25rem;
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
  border-bottom: 1px solid var(--border-dark);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.sidebar .brand i {
  color: var(--primary-color);
}

.sidebar-nav {
  list-style: none;
  padding: 1rem 0.75rem;
  margin: 0;
  flex-grow: 1;
}

.sidebar-nav .nav-link {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.75rem 1rem;
  color: var(--text-muted);
  border-radius: 0.5rem;
  text-decoration: none;
  font-weight: 500;
  transition: all 0.2s ease;
  margin-bottom: 0.35rem;
}

.sidebar-nav .nav-link:hover {
  color: #fff;
  background-color: rgba(59, 130, 246, 0.12);
}

.sidebar-nav .nav-link.active {
  color: #fff;
  background-color: var(--primary-color);
}

/* Main Content Area */
.main-wrapper {
  margin-left: var(--sidebar-width);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.topbar {
  height: 64px;
  background-color: var(--card-dark);
  border-bottom: 1px solid var(--border-dark);
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.content-body {
  padding: 1.75rem;
  flex-grow: 1;
}

/* Dashboard Cards */
.card-metric {
  background: var(--card-dark);
  border: 1px solid var(--border-dark);
  border-radius: 0.75rem;
  padding: 1.25rem;
  position: relative;
  overflow: hidden;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.card-metric:hover {
  transform: translateY(-2px);
  border-color: var(--primary-color);
}

.card-metric .metric-icon {
  width: 48px;
  height: 48px;
  border-radius: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
}

.card-metric .metric-value {
  font-size: 1.85rem;
  font-weight: 700;
  color: #fff;
  margin-top: 0.5rem;
}

.card-metric .metric-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Tables */
.table-custom {
  color: var(--text-main);
  background-color: var(--card-dark);
  border-color: var(--border-dark);
}

.table-custom th {
  background-color: #172033;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  border-bottom-color: var(--border-dark);
  padding: 0.85rem 1rem;
}

.table-custom td {
  border-bottom-color: var(--border-dark);
  padding: 0.85rem 1rem;
  vertical-align: middle;
}

/* Badges */
.badge-active {
  background-color: rgba(16, 185, 129, 0.2);
  color: #10b981;
  border: 1px solid rgba(16, 185, 129, 0.4);
}

.badge-restricted {
  background-color: rgba(245, 158, 11, 0.2);
  color: #f59e0b;
  border: 1px solid rgba(245, 158, 11, 0.4);
}

.badge-error {
  background-color: rgba(239, 68, 68, 0.2);
  color: #ef4444;
  border: 1px solid rgba(239, 68, 68, 0.4);
}

.badge-logistics {
  background-color: rgba(59, 130, 246, 0.2);
  color: #60a5fa;
  border: 1px solid rgba(59, 130, 246, 0.4);
}

/* Terminal Log Console */
.log-terminal {
  background-color: #090d16;
  border: 1px solid var(--border-dark);
  border-radius: 0.5rem;
  padding: 1rem;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;
  font-size: 0.85rem;
  max-height: 320px;
  overflow-y: auto;
  color: #34d399;
}

.log-entry {
  margin-bottom: 0.35rem;
  line-height: 1.4;
}

.log-time {
  color: var(--text-muted);
}

/* Modals */
.modal-content {
  background-color: var(--card-dark);
  border: 1px solid var(--border-dark);
  color: var(--text-main);
}

.modal-header, .modal-footer {
  border-color: var(--border-dark);
}

.form-control, .form-select {
  background-color: #0b0f19;
  border: 1px solid var(--border-dark);
  color: #fff;
}

.form-control:focus, .form-select:focus {
  background-color: #0b0f19;
  border-color: var(--primary-color);
  color: #fff;
  box-shadow: 0 0 0 0.25rem rgba(59, 130, 246, 0.25);
}

/* Professional Polish & Glow Utilities */
.tracking-wider {
  letter-spacing: 0.06em;
}

.card-hover-glow {
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.card-hover-glow:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px -4px rgba(0, 0, 0, 0.45);
}

/* Custom Scrollbars */
.log-terminal::-webkit-scrollbar,
#groupChecklistContainer::-webkit-scrollbar {
  width: 6px;
}

.log-terminal::-webkit-scrollbar-track,
#groupChecklistContainer::-webkit-scrollbar-track {
  background: #090d16;
}

.log-terminal::-webkit-scrollbar-thumb,
#groupChecklistContainer::-webkit-scrollbar-thumb {
  background: #334155;
  border-radius: 3px;
}

.log-terminal::-webkit-scrollbar-thumb:hover,
#groupChecklistContainer::-webkit-scrollbar-thumb:hover {
  background: #475569;
}

/* ==========================================================================
   Mobile Responsive Optimizations
   ========================================================================== */

/* Mobile backdrop */
.sidebar-backdrop {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(3px);
  z-index: 999;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.sidebar-backdrop.open {
  display: block;
  opacity: 1;
}

/* Small screens (tablets & phones < 768px) */
@media (max-width: 767.98px) {
  :root {
    --sidebar-width: 280px;
  }

  .sidebar {
    transform: translateX(-100%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 4px 0 24px rgba(0, 0, 0, 0.5);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .main-wrapper {
    margin-left: 0 !important;
  }

  .topbar {
    padding: 0 1rem;
    height: 58px;
  }

  .content-body {
    padding: 1rem 0.75rem;
  }

  /* Compact metrics on mobile */
  .card-metric {
    padding: 1rem;
  }

  .card-metric .metric-value {
    font-size: 1.5rem;
  }

  .card-metric .metric-icon {
    width: 40px;
    height: 40px;
    font-size: 1.15rem;
  }

  /* Form & table adjustments */
  .table-responsive {
    border-radius: 0.5rem;
  }

  .btn {
    padding: 0.45rem 0.75rem;
  }

  /* Spintax preview on mobile */
  #spintax-samples-container {
    max-height: 140px;
  }

  /* Live dispatch terminal height on mobile */
  .log-terminal {
    max-height: 220px;
    font-size: 0.78rem;
    padding: 0.75rem;
  }
}