/* 
 * Lumina Console Design System Stylesheet
 * Engineered for high-performance administrative environments.
 */

*, *::before, *::after {
  box-sizing: border-box;
}

:root {
  /* Surface & Base Colors */
  --background: #f8f9ff;
  --surface: #ffffff;
  --surface-dim: #d1daec;
  --surface-bright: #f8f9ff;
  --surface-container-lowest: #ffffff;
  --surface-container-low: #eff4ff;
  --surface-container: #e6eeff;
  --surface-container-high: #e0e9fa;
  --surface-container-highest: #dae3f4;
  --on-background: #131c28;
  --on-surface: #131c28;
  --on-surface-variant: #434751;
  --outline: #737782;
  --outline-variant: #c3c6d2;

  /* Primary Brand Tones */
  --primary: #003472;
  --on-primary: #ffffff;
  --primary-container: #1e4b8f;
  --on-primary-container: #9dbdff;

  /* Accent & Action Colors */
  --action-blue: #4091D1;
  --action-blue-hover: #317db6;
  --secondary: #00639b;
  --on-secondary: #ffffff;

  /* Alerts & Status Tones */
  --terracotta: #D86941;
  --terracotta-hover: #c45731;
  --amber: #E39C42;
  --success: #166534;
  --success-bg: #e0f2fe;
  --success-text: #004a76;
  
  /* Layout Dimensions */
  --sidebar-width: 260px;
  --transition-speed: 0.2s;
}

/* Base Styles & Typography */
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, Arial, sans-serif;
  background-color: var(--background);
  color: var(--on-background);
  margin: 0;
  padding: 0;
  display: flex;
  min-height: 100vh;
  font-size: 16px;
  line-height: 1.5;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  color: var(--primary);
  margin-top: 0;
  letter-spacing: -0.01em;
}

h1 { font-size: 28px; line-height: 36px; margin-bottom: 1.5rem; }
h2 { font-size: 22px; line-height: 28px; margin-bottom: 1rem; }

/* Main Layout Architecture */
.app-container {
  display: flex;
  width: 100%;
  position: relative;
}

/* Sidebar Navigation */
.sidebar {
  width: var(--sidebar-width);
  background-color: var(--primary-container);
  color: #ffffff;
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 100;
  transition: transform var(--transition-speed) ease-in-out;
  border-right: 1px solid var(--outline-variant);
}

.sidebar-header {
  padding: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-header .logo-text {
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.05em;
  color: #ffffff;
}

.sidebar-header .logo-subtitle {
  font-size: 0.55rem;
  letter-spacing: 0;
  color: rgba(255, 255, 255, 0.5);
  margin-top: 0.1rem;
  white-space: nowrap;
}

.sidebar-nav {
  padding: 1rem 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  flex-grow: 1;
}

.sidebar-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  color: rgba(255, 255, 255, 0.75);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  border-radius: 4px;
  transition: all var(--transition-speed) ease;
  position: relative;
}

.sidebar-link:hover {
  background-color: rgba(255, 255, 255, 0.08);
  color: #ffffff;
}

.sidebar-link.active {
  background-color: rgba(255, 255, 255, 0.12);
  color: #ffffff;
  font-weight: 600;
}

.sidebar-link.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 15%;
  height: 70%;
  width: 4px;
  background-color: var(--action-blue);
  border-radius: 0 4px 4px 0;
}

/* Main Content Panel */
.main-content {
  margin-left: var(--sidebar-width);
  flex-grow: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  padding: 2rem;
}

/* Top Header Bar */
.top-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--outline-variant);
}

.page-title-area {
  display: flex;
  flex-direction: column;
}

.page-title-area p {
  margin: 0.25rem 0 0 0;
  font-size: 0.9rem;
  color: var(--on-surface-variant);
}

/* Cards & Containers */
.card {
  background-color: var(--surface);
  border: 1px solid var(--outline-variant);
  border-radius: 8px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  box-shadow: 0px 2px 4px rgba(0, 0, 0, 0.02);
  transition: box-shadow var(--transition-speed) ease, border-color var(--transition-speed) ease;
  overflow-x: auto; /* Enable horizontal scrolling on small screens */
}

.card:hover {
  box-shadow: 0px 4px 8px rgba(0, 0, 0, 0.04);
  border-color: var(--surface-dim);
}

/* Stat Cards Layout */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.stat-card {
  background-color: var(--surface);
  border: 1px solid var(--outline-variant);
  border-radius: 8px;
  padding: 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  box-shadow: 0px 2px 4px rgba(0, 0, 0, 0.01);
}

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: 8px;
  background-color: var(--surface-container-low);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.stat-icon.online {
  background-color: #dcfce7;
  color: var(--success);
}

.stat-icon.warning {
  background-color: #fef3c7;
  color: var(--amber);
}

.stat-icon.danger {
  background-color: #fee2e2;
  color: var(--terracotta);
}

.stat-info {
  display: flex;
  flex-direction: column;
}

.stat-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--on-surface-variant);
  letter-spacing: 0.05em;
}

.stat-val {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--on-surface);
  line-height: 1.2;
  margin-top: 0.25rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0 1rem;
  height: 36px;
  border-radius: 4px;
  border: 1px solid var(--outline-variant);
  background-color: var(--surface);
  color: var(--on-surface);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-speed) ease;
  line-height: 1;
}

.btn:hover {
  background-color: var(--surface-container-low);
  border-color: var(--outline);
}

.btn.primary {
  background-color: var(--action-blue);
  color: #ffffff;
  border-color: var(--action-blue);
}

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

.btn.danger {
  background-color: var(--terracotta);
  color: #ffffff;
  border-color: var(--terracotta);
}

.btn.danger:hover {
  background-color: var(--terracotta-hover);
  border-color: var(--terracotta-hover);
}

button.btn {
  font-family: inherit;
}

.inline-actions {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

form.inline {
  display: inline-flex;
}

/* Badges & Chips */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.5rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.badge.online, .badge.collecting {
  background-color: #dcfce7;
  color: #15803d;
}

.badge.offline, .badge.critical {
  background-color: #fee2e2;
  color: #b91c1c;
}

.badge.standard {
  background-color: var(--surface-container-highest);
  color: var(--on-surface-variant);
}

.badge.neutral {
  background-color: var(--surface-container-low);
  color: var(--on-surface-variant);
}

/* Tables & Lists */
table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
  table-layout: fixed; /* Prevents column shifting */
}

#routers-table {
  min-width: 1100px;
}

#sites-table {
  min-width: 1000px;
}

#customers-table {
  min-width: 950px;
}

.datatable-container {
  overflow-x: auto;
  width: 100%;
  -webkit-overflow-scrolling: touch;
}

th, td {
  text-align: left;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--outline-variant);
  font-size: 0.9rem;
}

th {
  background-color: var(--surface-container-low);
  color: var(--on-surface-variant);
  font-weight: 700;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

tr:hover td {
  background-color: var(--surface-container-lowest);
}

.result-ok {
  color: var(--success);
  font-weight: 600;
}

.result-fail {
  color: var(--terracotta);
  font-weight: 600;
}

/* Forms & Inputs */
.field {
  margin-bottom: 1.25rem;
}

label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--on-surface);
  margin-bottom: 0.35rem;
}

input, select, textarea {
  width: 100%;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--outline-variant);
  border-radius: 4px;
  background-color: var(--surface);
  color: var(--on-surface);
  font-family: inherit;
  font-size: 0.9rem;
  box-sizing: border-box;
  transition: all var(--transition-speed) ease;
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--action-blue);
  box-shadow: 0 0 0 2px rgba(64, 145, 209, 0.2);
}

.field small {
  display: block;
  margin-top: 0.35rem;
  color: var(--on-surface-variant);
  font-size: 0.8rem;
}

input[type="checkbox"] {
  width: auto;
  margin-right: 0.5rem;
  cursor: pointer;
}

/* Monospace & Diff Output */
.diff {
  background: var(--surface-container-low);
  border: 1px solid var(--outline-variant);
  border-radius: 6px;
  padding: 1rem;
  overflow-x: auto;
  font-size: 0.85rem;
  line-height: 1.45;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

.diff-line {
  display: block;
  white-space: pre;
}

.diff-add {
  background-color: #dcfce7;
  color: #14532d;
}

.diff-del {
  background-color: #fee2e2;
  color: #7f1d1d;
}

.diff-hunk {
  color: #4b5563;
  font-weight: bold;
}

.line-no {
  display: inline-block;
  width: 3.5rem;
  text-align: right;
  margin-right: 0.75rem;
  color: #9ca3af;
  user-select: none;
}

/* System Notifications / Alerts */
.info-notification {
  background-color: var(--surface-container-low);
  border-left: 4px solid var(--action-blue);
  padding: 1rem;
  border-radius: 4px;
  margin-bottom: 1.5rem;
  font-size: 0.9rem;
  color: var(--on-surface-variant);
}

.info-notification strong {
  color: var(--primary);
}

/* Mobile Toggle Bar */
.mobile-nav-bar {
  display: none;
  background-color: var(--primary-container);
  color: #ffffff;
  padding: 1rem;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 101;
}

.mobile-nav-toggle {
  background: none;
  border: none;
  color: #ffffff;
  cursor: pointer;
  display: flex;
  align-items: center;
}

/* DataTables Overrides to match Lumina Console style */
.datatable-wrapper .datatable-top {
  padding: 0.75rem 0;
  display: flex !important;
  justify-content: space-between !important;
  align-items: center !important;
  width: 100% !important;
}

/* Hide default simple-datatables sorting indicators */
.datatable-sorter::before,
.datatable-sorter::after {
  display: none !important;
  content: "" !important;
}

/* Active sorting header styling */
th.active-sort button {
  color: var(--action-blue) !important;
}

th.active-sort .sort-icon {
  opacity: 1 !important;
  color: var(--action-blue) !important;
  font-weight: bold;
}

.datatable-search {
  margin-left: auto !important;
  float: none !important;
}

.datatable-dropdown {
  float: none !important;
}

.datatable-wrapper .datatable-bottom {
  padding: 0.75rem 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.datatable-selector {
  width: auto;
  padding: 0.35rem 1.5rem 0.35rem 0.5rem;
  margin-right: 0.5rem;
}

.datatable-input {
  width: auto;
  padding: 0.35rem 0.5rem;
}

.datatable-pagination a {
  border: 1px solid var(--outline-variant);
  background-color: var(--surface);
  color: var(--on-surface);
  padding: 0.35rem 0.7rem;
  margin-left: 2px;
  text-decoration: none;
  border-radius: 4px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
}

.datatable-pagination a:hover {
  background-color: var(--surface-container-low);
}

.datatable-pagination .active a {
  background-color: var(--action-blue);
  border-color: var(--action-blue);
  color: #ffffff;
}

.datatable-table th {
  border-bottom: 2px solid var(--outline);
}

/* Responsive Grid and Sidebar Collapsing */
@media (max-width: 768px) {
  body {
    flex-direction: column;
  }

  .mobile-nav-bar {
    display: flex;
  }

  .sidebar {
    transform: translateX(-100%);
    top: 56px; /* offset for top mobile bar */
  }

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

  .main-content {
    margin-left: 0;
    padding: 1rem;
  }

  .top-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }

  .stats-grid {
    grid-template-columns: 1fr;
  }
}

/* Collapse text in table action buttons on medium/small viewports */
@media (max-width: 1200px) {
  .inline-actions .btn .btn-text {
    display: none !important;
  }
  .inline-actions .btn i {
    margin: 0 !important;
  }
  .inline-actions .btn {
    padding: 0.4rem 0.5rem !important;
    display: inline-flex !important;
    justify-content: center !important;
    align-items: center !important;
    min-width: 32px;
    height: 32px;
  }
}