/**
 * Enterprise PBX Design System CSS
 * Modern Enterprise PBX & Call Center Dashboard
 * Compatible with CodeIgniter 3 and AJAX loadform()
 */

:root {
  /* Colors */
  --pbx-primary-900: #161826;
  --pbx-primary-800: #232532;
  --pbx-primary-700: #2b2e3d;
  --pbx-primary-600: #3f424d;
  --pbx-primary-500: #595d6c;
  
  --pbx-brand: #9184d9;
  --pbx-brand-hover: #796cbf;
  --pbx-brand-light: #f5f4ff;
  --pbx-brand-accent: #a7a1db;
  
  --pbx-success: #10b981;
  --pbx-success-light: #ecfdf5;
  --pbx-success-border: #a7f3d0;
  
  --pbx-danger: #ef4444;
  --pbx-danger-light: #fef2f2;
  --pbx-danger-border: #fecaca;
  
  --pbx-warning: #f59e0b;
  --pbx-warning-light: #fffbeb;
  --pbx-warning-border: #fde68a;
  
  --pbx-info: #06b6d4;
  --pbx-info-light: #ecfeff;
  --pbx-info-border: #a5f3fc;
  
  --pbx-bg-main: #f1f5f9;
  --pbx-bg-card: #ffffff;
  --pbx-border: #e2e8f0;
  --pbx-border-light: #f1f5f9;
  
  --pbx-text-main: #0f172a;
  --pbx-text-muted: #64748b;
  --pbx-text-light: #94a3b8;
  
  /* Layout Dimensions */
  --pbx-sidebar-width: 265px;
  --pbx-sidebar-collapsed: 72px;
  --pbx-topbar-height: 64px;
  
  /* Typography */
  --pbx-font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
  
  /* Shadows & Radius */
  --pbx-radius-sm: 6px;
  --pbx-radius-md: 10px;
  --pbx-radius-lg: 16px;
  --pbx-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --pbx-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --pbx-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
  --pbx-transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Box Sizing */
*, *::before, *::after {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  font-family: var(--pbx-font-family);
  font-size: 14px;
  line-height: 1.5;
  color: var(--pbx-text-main);
  background-color: var(--pbx-bg-main);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
}

/* ==========================================================================
   App Shell Layout (Sidebar + Topbar + Main)
   ========================================================================== */
#pbx-app {
  display: flex;
  min-height: 100vh;
  background-color: var(--pbx-bg-main);
  position: relative;
}

/* Sidebar */
#pbx-sidebar {
  width: var(--pbx-sidebar-width);
  background: linear-gradient(180deg, var(--pbx-primary-900) 0%, var(--pbx-primary-800) 100%);
  color: #f8fafc;
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 100;
  transition: var(--pbx-transition);
  box-shadow: 2px 0 16px rgba(0, 0, 0, 0.25);
  border-right: 1px solid rgba(255, 255, 255, 0.07);
  overflow-y: auto;
  overflow-x: hidden;
}

#pbx-sidebar::-webkit-scrollbar {
  width: 5px;
}
#pbx-sidebar::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.15);
  border-radius: 4px;
}

.pbx-brand {
  padding: 18px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(0, 0, 0, 0.18);
}

.pbx-brand-logo {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, #9184d9, #796cbf);
  border-radius: var(--pbx-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 18px;
  box-shadow: 0 2px 8px rgba(145, 132, 217, 0.4);
  flex-shrink: 0;
}

.pbx-brand-text {
  display: flex;
  flex-direction: column;
}

.pbx-brand-title {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.3px;
  color: #fff;
  line-height: 1.2;
}

.pbx-brand-subtitle {
  font-size: 11px;
  color: var(--pbx-text-light);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Tenant Impersonation Alert in Sidebar */
.pbx-impersonation-box {
  margin: 12px 14px 6px;
  padding: 10px 12px;
  background: rgba(245, 158, 11, 0.12);
  border: 1px solid rgba(245, 158, 11, 0.3);
  border-radius: var(--pbx-radius-sm);
  font-size: 12px;
  color: #fde68a;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.pbx-impersonation-box a {
  color: #d2cefd;
  text-decoration: underline;
  font-weight: 600;
}

/* Navigation Menu Groups */
.pbx-nav {
  padding: 14px 10px 30px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.pbx-nav-group-title {
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  font-weight: 700;
  color: var(--pbx-text-light);
  padding: 14px 12px 6px;
}

.pbx-nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 9px 14px;
  border-radius: var(--pbx-radius-sm);
  color: #cbd5e1;
  text-decoration: none;
  font-weight: 500;
  font-size: 13.5px;
  transition: var(--pbx-transition);
  position: relative;
  cursor: pointer;
}

.pbx-nav-item:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  transform: translateX(2px);
}

.pbx-nav-item.active {
  background: var(--pbx-brand);
  color: #fff;
  font-weight: 600;
  box-shadow: 0 4px 10px rgba(145, 132, 217, 0.35);
}

.pbx-nav-icon {
  width: 18px;
  height: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  opacity: 0.9;
}

.pbx-nav-badge {
  margin-left: auto;
  font-size: 10px;
  padding: 2px 7px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
  font-weight: 600;
}

/* Collapsible Accordion Parent Item & Chevron */
.pbx-nav-parent {
  user-select: none;
}

.pbx-nav-text,
.pbx-nav-parent-text {
  flex: 1;
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.pbx-nav-parent .pbx-nav-tip {
  margin-left: auto;
  margin-right: 6px;
}

.pbx-nav-chevron {
  margin-left: auto;
  width: 16px;
  height: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  opacity: 0.6;
}

.pbx-nav-parent .pbx-nav-chevron {
  margin-left: 0;
}

.pbx-nav-parent:hover .pbx-nav-chevron {
  opacity: 1;
}

.pbx-nav-parent.open .pbx-nav-chevron {
  transform: rotate(90deg);
}

/* Submenu Accordion Drawer */
.pbx-nav-submenu {
  display: none;
  flex-direction: column;
  gap: 2px;
  margin-left: 20px;
  padding-left: 10px;
  margin-top: 2px;
  margin-bottom: 6px;
  border-left: 1.5px solid rgba(145, 132, 217, 0.25);
}

.pbx-nav-submenu.open {
  display: flex;
}

.pbx-nav-subitem {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 10px 7px 12px;
  border-radius: var(--pbx-radius-sm);
  color: #94a3b8;
  text-decoration: none;
  font-size: 12.5px;
  font-weight: 500;
  line-height: 1.38;
  transition: var(--pbx-transition);
  position: relative;
}

.pbx-nav-subitem:hover {
  background: rgba(145, 132, 217, 0.09);
  color: #f8fafc;
  transform: translateX(2px);
}

.pbx-nav-subitem:hover .pbx-nav-subdot {
  opacity: 1;
  background: #d2cefd;
  box-shadow: 0 0 5px rgba(145, 132, 217, 0.45);
  transform: scale(1.2);
}

.pbx-nav-subitem.active {
  background: rgba(145, 132, 217, 0.22);
  color: #d2cefd;
  font-weight: 600;
}

.pbx-nav-subdot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #64748b;
  opacity: 0.7;
  flex-shrink: 0;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.pbx-nav-subitem.active .pbx-nav-subdot {
  opacity: 1;
  background: #9184d9;
  box-shadow: 0 0 7px rgba(145, 132, 217, 0.75);
  transform: scale(1.3);
}

.pbx-nav-subtext {
  flex: 1;
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.pbx-nav-tip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 15px;
  height: 15px;
  min-width: 15px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: #94a3b8;
  font-size: 10px;
  font-weight: 700;
  line-height: 1;
  cursor: help;
  margin-left: auto;
  flex-shrink: 0;
  transition: all 0.18s ease;
  user-select: none;
}

.pbx-nav-subitem:hover .pbx-nav-tip {
  background: rgba(255, 255, 255, 0.16);
  color: #f1f5f9;
  border-color: rgba(255, 255, 255, 0.25);
}

.pbx-nav-tip:hover {
  background: #9184d9 !important;
  color: #ffffff !important;
  border-color: #b8adfc !important;
  box-shadow: 0 0 8px rgba(145, 132, 217, 0.55);
  transform: scale(1.18);
}

.pbx-nav-subitem.active .pbx-nav-tip {
  background: rgba(145, 132, 217, 0.2);
  color: #d2cefd;
  border-color: rgba(145, 132, 217, 0.35);
}

/* Floating Tooltip Container for Sidebar Navigation */
.pbx-nav-floating-tip {
  position: fixed;
  z-index: 999999;
  background: #0f172a;
  border: 1px solid rgba(59, 130, 246, 0.45);
  box-shadow: 0 14px 30px -4px rgba(0, 0, 0, 0.75), 0 4px 14px rgba(0, 0, 0, 0.5);
  border-radius: 8px;
  padding: 10px 14px;
  max-width: 290px;
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
  transform: translateX(-6px) scale(0.96);
  transition: opacity 0.16s cubic-bezier(0.16, 1, 0.3, 1), transform 0.16s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.16s;
  font-family: var(--pbx-font-family, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif);
}

.pbx-nav-floating-tip.visible {
  opacity: 1;
  visibility: visible;
  transform: translateX(0) scale(1);
}

.pbx-nav-floating-tip::after {
  content: "";
  position: absolute;
  right: 100%;
  top: 50%;
  transform: translateY(-50%);
  border-width: 6px;
  border-style: solid;
  border-color: transparent #0f172a transparent transparent;
}

.pbx-nav-floating-tip.tip-on-left::after {
  right: auto;
  left: 100%;
  border-color: transparent transparent transparent #0f172a;
}

.pbx-tip-card-title {
  font-size: 12.5px;
  font-weight: 700;
  color: #38bdf8;
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 6px;
  line-height: 1.35;
}

.pbx-tip-card-desc {
  font-size: 11.5px;
  color: #cbd5e1;
  line-height: 1.45;
}

/* ==========================================================================
   Sidebar Collapse Mode (Desktop)
   ========================================================================== */
#pbx-sidebar.collapsed {
  width: 70px;
}

#pbx-sidebar.collapsed .pbx-brand-text,
#pbx-sidebar.collapsed .pbx-brand-subtitle,
#pbx-sidebar.collapsed .pbx-nav-group-title,
#pbx-sidebar.collapsed .pbx-nav-item > span:not(.pbx-nav-icon),
#pbx-sidebar.collapsed .pbx-nav-chevron,
#pbx-sidebar.collapsed .pbx-nav-badge,
#pbx-sidebar.collapsed .pbx-nav-submenu,
#pbx-sidebar.collapsed .pbx-impersonation-box {
  display: none !important;
}

#pbx-sidebar.collapsed .pbx-brand {
  padding: 16px 12px;
  justify-content: center;
}

#pbx-sidebar.collapsed .pbx-nav-item {
  justify-content: center;
  padding: 10px 0;
}

#pbx-sidebar.collapsed + #pbx-main-container,
body.sidebar-collapsed #pbx-main-container {
  margin-left: 70px;
  width: calc(100% - 70px);
}

/* Main Content Area */
#pbx-main-container {
  flex: 1;
  margin-left: var(--pbx-sidebar-width);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: var(--pbx-transition);
  background-color: var(--pbx-bg-main);
  width: calc(100% - var(--pbx-sidebar-width));
}

/* Topbar */
#pbx-topbar {
  height: var(--pbx-topbar-height);
  background: #ffffff;
  border-bottom: 1px solid var(--pbx-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 90;
  box-shadow: var(--pbx-shadow-sm);
}

.pbx-topbar-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.pbx-sidebar-toggle {
  background: transparent;
  border: 1px solid var(--pbx-border);
  border-radius: var(--pbx-radius-sm);
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--pbx-text-muted);
  cursor: pointer;
  transition: var(--pbx-transition);
  padding: 0;
}

.pbx-sidebar-toggle:hover {
  background: var(--pbx-bg-main);
  color: var(--pbx-text-main);
}

.pbx-topbar-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13.5px;
  color: var(--pbx-text-muted);
}

.pbx-topbar-breadcrumb span.current {
  color: var(--pbx-text-main);
  font-weight: 600;
}

.pbx-topbar-right {
  display: flex;
  align-items: center;
  gap: 14px;
}

/* Language Switcher */
.pbx-lang-switch {
  display: flex;
  background: var(--pbx-bg-main);
  padding: 3px;
  border-radius: var(--pbx-radius-sm);
  border: 1px solid var(--pbx-border);
}

.pbx-lang-btn {
  border: none;
  background: transparent;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 4px;
  cursor: pointer;
  color: var(--pbx-text-muted);
  transition: var(--pbx-transition);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.pbx-lang-btn.active {
  background: #ffffff;
  color: var(--pbx-brand);
  box-shadow: var(--pbx-shadow-sm);
}

/* User Profile & Actions */
.pbx-user-pill {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 5px 12px 5px 6px;
  background: var(--pbx-bg-main);
  border: 1px solid var(--pbx-border);
  border-radius: 20px;
  text-decoration: none;
  color: var(--pbx-text-main);
  transition: var(--pbx-transition);
}

.pbx-user-pill:hover {
  background: #e2e8f0;
}

.pbx-user-avatar {
  width: 28px;
  height: 28px;
  background: var(--pbx-brand);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 12px;
}

.pbx-user-name {
  font-weight: 600;
  font-size: 13px;
}

.pbx-user-role-badge {
  font-size: 10px;
  padding: 1px 6px;
  border-radius: 8px;
  background: #e2e8f0;
  color: var(--pbx-text-muted);
  text-transform: uppercase;
  font-weight: 700;
}

.pbx-logout-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: var(--pbx-radius-sm);
  background: #fee2e2;
  color: #b91c1c;
  text-decoration: none;
  font-size: 13px;
  font-weight: 600;
  border: 1px solid #fecaca;
  transition: var(--pbx-transition);
}

.pbx-logout-btn:hover {
  background: #fecaca;
  color: #991b1b;
}

/* Sub Navigation Breadcrumbs / Module Tabs */
.pbx-module-nav {
  background: #ffffff;
  border-bottom: 1px solid var(--pbx-border);
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  white-space: nowrap;
}

.pbx-module-nav::-webkit-scrollbar {
  height: 3px;
}

.pbx-module-nav-item {
  display: inline-flex;
  align-items: center;
  padding: 12px 16px;
  color: var(--pbx-text-muted);
  font-size: 13px;
  font-weight: 500;
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: var(--pbx-transition);
}

.pbx-module-nav-item:hover {
  color: var(--pbx-brand);
}

.pbx-module-nav-item.active {
  color: var(--pbx-brand);
  border-bottom-color: var(--pbx-brand);
  font-weight: 600;
}

/* Legacy Horizontal Breadcrumbs / Subnav Tabs - Hidden because all submenus are consolidated into the Left Sidebar */
.breadcrumbs,
.breadcrumbs ul,
div.breadcrumbs {
  display: none !important;
  visibility: hidden !important;
  margin: 0 !important;
  padding: 0 !important;
  height: 0 !important;
  min-height: 0 !important;
  overflow: hidden !important;
}

/* Main Body Content */
#pbx-content {
  padding: 24px;
  flex: 1;
}

/* ==========================================================================
   Modern Cards, KPI Boxes & Layout Components
   ========================================================================== */
.section {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 24px;
}

.box {
  background: var(--pbx-bg-card);
  border-radius: var(--pbx-radius-md);
  border: 1px solid var(--pbx-border);
  box-shadow: var(--pbx-shadow-sm);
  overflow: hidden;
  transition: var(--pbx-transition);
}

.box:hover {
  box-shadow: var(--pbx-shadow);
}

.box .title {
  padding: 16px 20px;
  border-bottom: 1px solid var(--pbx-border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #ffffff;
}

.box .title h2 {
  margin: 0;
  font-size: 15.5px;
  font-weight: 600;
  color: var(--pbx-text-main);
  display: flex;
  align-items: center;
  gap: 8px;
}

.box .content {
  padding: 20px;
}

/* Grid System */
.pbx-grid {
  display: grid;
  gap: 20px;
}

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

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

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

/* KPI Metric Cards */
.pbx-stat-card {
  background: #ffffff;
  border-radius: var(--pbx-radius-md);
  border: 1px solid var(--pbx-border);
  padding: 20px;
  box-shadow: var(--pbx-shadow-sm);
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: var(--pbx-transition);
  position: relative;
  overflow: hidden;
}

.pbx-stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--pbx-shadow);
}

.pbx-stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 4px;
  background: var(--pbx-brand);
}

.pbx-stat-card.success::before { background: var(--pbx-success); }
.pbx-stat-card.danger::before { background: var(--pbx-danger); }
.pbx-stat-card.warning::before { background: var(--pbx-warning); }
.pbx-stat-card.info::before { background: var(--pbx-info); }

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

.pbx-stat-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--pbx-text-muted);
  margin-bottom: 6px;
}

.pbx-stat-value {
  font-size: 26px;
  font-weight: 700;
  color: var(--pbx-text-main);
  letter-spacing: -0.5px;
  line-height: 1.1;
}

.pbx-stat-sub {
  font-size: 12px;
  color: var(--pbx-text-light);
  margin-top: 4px;
}

.pbx-stat-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--pbx-radius-md);
  background: var(--pbx-brand-light);
  color: var(--pbx-brand);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}

.pbx-stat-card.success .pbx-stat-icon { background: var(--pbx-success-light); color: var(--pbx-success); }
.pbx-stat-card.danger .pbx-stat-icon { background: var(--pbx-danger-light); color: var(--pbx-danger); }
.pbx-stat-card.warning .pbx-stat-icon { background: var(--pbx-warning-light); color: var(--pbx-warning); }
.pbx-stat-card.info .pbx-stat-icon { background: var(--pbx-info-light); color: var(--pbx-info); }

/* Dashboard Specific Table & Layout */
.tbl_statics {
  width: 100%;
}

.tbl_statics td {
  border: none !important;
  padding: 14px 10px !important;
  text-align: center;
}

.title_dashboard {
  font-size: 32px;
  font-weight: 700;
  color: var(--pbx-text-main);
  margin-bottom: 6px;
  letter-spacing: -0.5px;
}

/* ==========================================================================
   Modern Tables & Data Presentation
   ========================================================================== */
table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin-bottom: 16px;
  border: 1px solid var(--pbx-border);
  border-radius: var(--pbx-radius-sm);
  background: #ffffff;
  overflow: hidden;
}

table thead th {
  background: #f8fafc;
  color: var(--pbx-primary-600);
  font-size: 12.5px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--pbx-border);
  text-align: left;
}

table thead th[align="center"] {
  text-align: center;
}

table tbody td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--pbx-border-light);
  color: var(--pbx-text-main);
  font-size: 13.5px;
  vertical-align: middle;
}

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

table tbody tr:hover {
  background-color: #f8fafc;
}

table tr.event {
  background-color: #ffffff;
}

table tr.odd {
  background-color: #fcfdfe;
}

/* Action Icons in Tables */
.pbx-btn-icon,
button.pbx-btn-icon,
a.pbx-btn-icon {
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  width: 28px !important;
  min-width: 28px !important;
  max-width: 28px !important;
  height: 28px !important;
  min-height: 28px !important;
  max-height: 28px !important;
  padding: 0 !important;
  margin: 0 2px !important;
  border-radius: 6px !important;
  background: #f8fafc;
  border: 1px solid var(--pbx-border, #e2e8f0) !important;
  color: var(--pbx-text-main, #475569) !important;
  cursor: pointer !important;
  transition: all 0.18s cubic-bezier(0.4, 0, 0.2, 1) !important;
  text-decoration: none !important;
  vertical-align: middle !important;
  line-height: 1 !important;
  box-sizing: border-box !important;
  outline: none !important;
  appearance: none !important;
  -webkit-appearance: none !important;
  font-size: 0 !important;
}

.pbx-btn-icon:hover,
button.pbx-btn-icon:hover,
a.pbx-btn-icon:hover {
  background: #f5f4ff !important;
  border-color: #d2cefd !important;
  color: #9184d9 !important;
  transform: translateY(-1px);
  box-shadow: 0 2px 5px rgba(145, 132, 217, 0.15) !important;
}

.pbx-btn-icon.pbx-btn-icon-primary,
button.pbx-btn-icon.pbx-btn-icon-primary,
a.pbx-btn-icon.pbx-btn-icon-primary {
  color: #9184d9 !important;
  background: rgba(145, 132, 217, 0.1) !important;
  border-color: rgba(145, 132, 217, 0.28) !important;
}

.pbx-btn-icon.pbx-btn-icon-primary:hover,
button.pbx-btn-icon.pbx-btn-icon-primary:hover,
a.pbx-btn-icon.pbx-btn-icon-primary:hover {
  background: #f5f4ff !important;
  border-color: #9184d9 !important;
  color: #796cbf !important;
  box-shadow: 0 2px 5px rgba(145, 132, 217, 0.2) !important;
}

.pbx-btn-icon.pbx-btn-icon-danger,
button.pbx-btn-icon.pbx-btn-icon-danger,
a.pbx-btn-icon.pbx-btn-icon-danger {
  color: #ef4444 !important;
  background: rgba(239, 68, 68, 0.08) !important;
  border-color: rgba(239, 68, 68, 0.25) !important;
}

.pbx-btn-icon.pbx-btn-icon-danger:hover,
button.pbx-btn-icon.pbx-btn-icon-danger:hover,
a.pbx-btn-icon.pbx-btn-icon-danger:hover {
  background: #fef2f2 !important;
  border-color: #fca5a5 !important;
  color: #dc2626 !important;
  box-shadow: 0 2px 5px rgba(239, 68, 68, 0.2) !important;
}

.pbx-btn-icon.pbx-btn-icon-success,
button.pbx-btn-icon.pbx-btn-icon-success,
a.pbx-btn-icon.pbx-btn-icon-success {
  color: #10b981 !important;
  background: rgba(16, 185, 129, 0.08) !important;
  border-color: rgba(16, 185, 129, 0.25) !important;
}

.pbx-btn-icon.pbx-btn-icon-success:hover,
button.pbx-btn-icon.pbx-btn-icon-success:hover,
a.pbx-btn-icon.pbx-btn-icon-success:hover {
  background: #ecfdf5 !important;
  border-color: #6ee7b7 !important;
  color: #059669 !important;
  box-shadow: 0 2px 5px rgba(16, 185, 129, 0.2) !important;
}

.pbx-btn-icon.pbx-btn-icon-warning,
button.pbx-btn-icon.pbx-btn-icon-warning,
a.pbx-btn-icon.pbx-btn-icon-warning {
  color: #f59e0b !important;
  background: rgba(245, 158, 11, 0.08) !important;
  border-color: rgba(245, 158, 11, 0.25) !important;
}

.pbx-btn-icon.pbx-btn-icon-warning:hover,
button.pbx-btn-icon.pbx-btn-icon-warning:hover,
a.pbx-btn-icon.pbx-btn-icon-warning:hover {
  background: #fffbeb !important;
  border-color: #fcd34d !important;
  color: #d97706 !important;
  box-shadow: 0 2px 5px rgba(245, 158, 11, 0.2) !important;
}

.pbx-btn-icon.pbx-btn-icon-info,
button.pbx-btn-icon.pbx-btn-icon-info,
a.pbx-btn-icon.pbx-btn-icon-info {
  color: #0284c7 !important;
  background: rgba(2, 132, 199, 0.08) !important;
  border-color: rgba(2, 132, 199, 0.25) !important;
}

.pbx-btn-icon.pbx-btn-icon-info:hover,
button.pbx-btn-icon.pbx-btn-icon-info:hover,
a.pbx-btn-icon.pbx-btn-icon-info:hover {
  background: #f0f9ff !important;
  border-color: #7dd3fc !important;
  color: #0369a1 !important;
  box-shadow: 0 2px 5px rgba(2, 132, 199, 0.2) !important;
}

.pbx-btn-icon.pbx-btn-icon-download:hover,
button.pbx-btn-icon.pbx-btn-icon-download:hover,
a.pbx-btn-icon.pbx-btn-icon-download:hover {
  background: #ecfdf5 !important;
  border-color: #a7f3d0 !important;
  color: #059669 !important;
}

.pbx-btn-icon.pbx-btn-icon-play:hover,
button.pbx-btn-icon.pbx-btn-icon-play:hover,
a.pbx-btn-icon.pbx-btn-icon-play:hover {
  background: var(--pbx-brand-light, #f5f4ff) !important;
  border-color: #d2cefd !important;
  color: var(--pbx-brand, #9184d9) !important;
}

.pbx-btn-icon svg,
button.pbx-btn-icon svg,
a.pbx-btn-icon svg {
  display: block !important;
  width: 14px !important;
  min-width: 14px !important;
  max-width: 14px !important;
  height: 14px !important;
  min-height: 14px !important;
  max-height: 14px !important;
  pointer-events: none !important;
  stroke: currentColor !important;
  fill: none !important;
  stroke-width: 2.2 !important;
  stroke-linecap: round !important;
  stroke-linejoin: round !important;
  flex-shrink: 0 !important;
  margin: auto !important;
  vertical-align: middle !important;
}

table td a img,
table td img {
  vertical-align: middle;
  transition: transform 0.15s ease;
  max-width: 20px;
  max-height: 20px;
}

table td a:hover img {
  transform: scale(1.18);
}

/* Overview Summary Table */
table thead tr th[colspan="2"] {
  background: #f1f5f9;
  color: var(--pbx-text-main);
  font-weight: 700;
}

/* ==========================================================================
   Modern Form Controls & Search Filters
   ========================================================================== */
form {
  margin: 0;
}

.line {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 14px;
}

.line label {
  min-width: 140px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--pbx-text-main);
}

input[type="text"],
input[type="password"],
input[type="email"],
input[type="number"],
select,
textarea {
  font-family: var(--pbx-font-family);
  font-size: 13.5px;
  padding: 9px 13px;
  border: 1px solid var(--pbx-border);
  border-radius: var(--pbx-radius-sm);
  background-color: #ffffff;
  color: var(--pbx-text-main);
  outline: none;
  transition: var(--pbx-transition);
  max-width: 100%;
}

input[type="text"]:focus,
input[type="password"]:focus,
input[type="email"]:focus,
input[type="number"]:focus,
select:focus,
textarea:focus {
  border-color: var(--pbx-brand);
  box-shadow: 0 0 0 3px rgba(145, 132, 217, 0.2);
}

input.small, select.small {
  width: 220px;
}

input.medium, select.medium {
  width: 320px;
}

input.large, select.large {
  width: 100%;
}

/* Modern Buttons */
button,
input[type="submit"],
input[type="button"],
.pbx-btn {
  font-family: var(--pbx-font-family);
  font-size: 13.5px;
  font-weight: 600;
  padding: 9px 18px;
  border-radius: var(--pbx-radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: var(--pbx-transition);
  text-decoration: none;
}

button:hover,
input[type="submit"]:hover,
.pbx-btn:hover {
  opacity: 0.92;
  transform: translateY(-1px);
}

button.green,
button.green.medium,
.pbx-btn-primary {
  background: var(--pbx-brand) !important;
  color: #ffffff !important;
  box-shadow: 0 2px 4px rgba(145, 132, 217, 0.25);
}

button.red,
.pbx-btn-danger {
  background: var(--pbx-danger) !important;
  color: #ffffff !important;
  box-shadow: 0 2px 4px rgba(239, 68, 68, 0.25);
}

button.blue,
.pbx-btn-info {
  background: var(--pbx-info) !important;
  color: #ffffff !important;
}

/* ==========================================================================
   Alerts & Feedback Messages
   ========================================================================== */
.messages {
  padding: 12px 16px;
  border-radius: var(--pbx-radius-sm);
  font-size: 13.5px;
  font-weight: 500;
  margin: 14px 0;
  display: flex;
  align-items: center;
  gap: 10px;
}

.messages.green {
  background: var(--pbx-success-light);
  color: #065f46;
  border: 1px solid var(--pbx-success-border);
}

.messages.red {
  background: var(--pbx-danger-light);
  color: #991b1b;
  border: 1px solid var(--pbx-danger-border);
}

.messages.orange,
.messages.yellow {
  background: var(--pbx-warning-light);
  color: #92400e;
  border: 1px solid var(--pbx-warning-border);
}

/* ==========================================================================
   Modern Enterprise Pagination Component
   ========================================================================== */
.pbx-pagination {
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  flex-wrap: wrap !important;
  gap: 12px !important;
  padding: 14px 20px !important;
  background: #ffffff !important;
  border-top: 1px solid var(--pbx-border) !important;
  border-bottom-left-radius: var(--pbx-radius-md) !important;
  border-bottom-right-radius: var(--pbx-radius-md) !important;
  margin-top: 16px !important;
}

.pbx-pagination-info {
  font-size: 13px !important;
  color: var(--pbx-text-muted) !important;
}

.pbx-pagination-info strong {
  color: var(--pbx-text-main) !important;
  font-weight: 600 !important;
}

.pbx-pagination-controls {
  display: inline-flex !important;
  align-items: center !important;
  gap: 6px !important;
}

.pbx-page-btn {
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  min-width: 34px !important;
  height: 34px !important;
  padding: 0 10px !important;
  border: 1px solid var(--pbx-border) !important;
  background: #ffffff !important;
  color: var(--pbx-text-main) !important;
  border-radius: var(--pbx-radius-sm) !important;
  font-size: 13.5px !important;
  font-weight: 500 !important;
  cursor: pointer !important;
  transition: var(--pbx-transition) !important;
  user-select: none !important;
  text-decoration: none !important;
}

.pbx-page-btn:hover:not(:disabled) {
  background: var(--pbx-bg-main) !important;
  border-color: var(--pbx-border-focus) !important;
  color: var(--pbx-brand) !important;
  transform: translateY(-1px) !important;
}

.pbx-page-btn:disabled {
  opacity: 0.45 !important;
  cursor: not-allowed !important;
  background: #f8fafc !important;
}

.pbx-page-current {
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  min-width: 34px !important;
  height: 34px !important;
  padding: 0 12px !important;
  background: var(--pbx-brand) !important;
  color: #ffffff !important;
  border: 1px solid var(--pbx-brand) !important;
  border-radius: var(--pbx-radius-sm) !important;
  font-size: 13px !important;
  font-weight: 600 !important;
  box-shadow: 0 2px 6px rgba(145, 132, 217, 0.3) !important;
}

/* Transform legacy .pager, #pager, #pager_search into modern pagination bar automatically */
.pager, #pager, #pager_search, #pager_list {
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  flex-wrap: wrap !important;
  gap: 12px !important;
  padding: 14px 20px !important;
  background: #ffffff !important;
  border-top: 1px solid var(--pbx-border) !important;
  border-left: none !important;
  border-right: none !important;
  border-bottom: none !important;
  border-radius: 0 0 var(--pbx-radius-md) var(--pbx-radius-md) !important;
  margin-top: 16px !important;
}

.pager > div {
  display: inline-flex !important;
  align-items: center !important;
  gap: 6px !important;
}

.pager img {
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  width: 34px !important;
  height: 34px !important;
  padding: 7px !important;
  background: #ffffff !important;
  border: 1px solid var(--pbx-border) !important;
  border-radius: var(--pbx-radius-sm) !important;
  cursor: pointer !important;
  transition: var(--pbx-transition) !important;
}

.pager img:hover {
  background: var(--pbx-bg-main) !important;
  border-color: var(--pbx-brand) !important;
  transform: translateY(-1px) !important;
}

.pager input.pagedisplay {
  min-width: 50px !important;
  height: 34px !important;
  text-align: center !important;
  font-weight: 700 !important;
  color: var(--pbx-brand) !important;
  background: var(--pbx-brand-light) !important;
  border: 1px solid var(--pbx-border) !important;
  border-radius: var(--pbx-radius-sm) !important;
  padding: 0 8px !important;
}

.pager select.pagesize {
  height: 34px !important;
  padding: 4px 12px !important;
  border: 1px solid var(--pbx-border) !important;
  border-radius: var(--pbx-radius-sm) !important;
  font-weight: 600 !important;
  color: var(--pbx-text-main) !important;
  background: #ffffff !important;
}

/* ==========================================================================
   Badges, Statuses & Monitoring Elements
   ========================================================================== */
.pbx-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 8px;
  border-radius: 6px;
  font-size: 11.5px;
  font-weight: 600;
}

.pbx-badge-registered,
.pbx-badge-answered,
.pbx-badge-success {
  background: var(--pbx-success-light);
  color: #065f46;
  border: 1px solid var(--pbx-success-border);
}

.pbx-badge-unregistered,
.pbx-badge-failed,
.pbx-badge-missed,
.pbx-badge-danger {
  background: var(--pbx-danger-light);
  color: #991b1b;
  border: 1px solid var(--pbx-danger-border);
}

.pbx-badge-ringing,
.pbx-badge-warning {
  background: var(--pbx-warning-light);
  color: #92400e;
  border: 1px solid var(--pbx-warning-border);
}

.pbx-badge-calling {
  background: #fee2e2;
  color: #b91c1c;
  animation: pbx-pulse 1.5s infinite;
}

@keyframes pbx-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

/* Wallboard Extension Boxes */
.div_ext {
  min-width: 75px;
  padding: 6px 10px;
  border-radius: var(--pbx-radius-sm);
  font-size: 15px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 4px;
}

#blue.div_ext,
.div_ext.blue {
  background: #d1fae5;
  color: #065f46;
  border: 1px solid #6ee7b7;
}

#red.div_ext,
.div_ext.red {
  background: #fee2e2;
  color: #991b1b;
  border: 1px solid #fca5a5;
}

#yellow.div_ext,
.div_ext.yellow {
  background: #fef3c7;
  color: #92400e;
  border: 1px solid #fcd34d;
}

#Calling.div_ext,
.div_ext.calling {
  background: #ef4444 !important;
  color: #ffffff !important;
  box-shadow: 0 0 8px rgba(239, 68, 68, 0.6);
  animation: pbx-pulse 1.2s infinite;
}

/* Modern Audio Player */
audio#audio_player {
  width: 100%;
  max-width: 400px;
  height: 40px;
  border-radius: 20px;
  outline: none;
}

/* ==========================================================================
   Footer
   ========================================================================== */
#pbx-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--pbx-border);
  background: #ffffff;
  color: var(--pbx-text-muted);
  font-size: 12.5px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
}

/* ==========================================================================
   Responsive Adaptations (Tablet & Mobile)
   ========================================================================== */
@media (max-width: 1024px) {
  :root {
    --pbx-sidebar-width: 0px;
  }
  
  #pbx-sidebar {
    transform: translateX(-100%);
    width: 260px;
  }
  
  #pbx-sidebar.open {
    transform: translateX(0);
  }
  
  #pbx-main-container {
    margin-left: 0;
    width: 100%;
  }
  
  .pbx-grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .pbx-grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  #pbx-topbar {
    padding: 0 16px;
  }
  
  #pbx-content {
    padding: 16px;
  }
  
  .pbx-grid-4,
  .pbx-grid-3,
  .pbx-grid-2 {
    grid-template-columns: 1fr;
  }
  
  table {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
  }
  
  .line {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }
  
  .line label {
    min-width: 100%;
  }
  
}

/* ==========================================================================
   Global Enterprise Help Tooltip Component (.pbx-help-tip)
   ========================================================================== */
.pbx-help-tip {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  min-width: 16px;
  border-radius: 50%;
  background: #e2e8f0;
  color: #64748b;
  font-size: 11px;
  font-weight: 700;
  line-height: 1;
  cursor: help;
  margin-left: 6px;
  vertical-align: middle;
  user-select: none;
  transition: all 0.2s ease;
  font-family: var(--pbx-font-family, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif);
}

.pbx-help-tip:hover,
.pbx-help-tip:focus,
.pbx-help-tip.active {
  background: var(--pbx-brand, #2563eb);
  color: #ffffff;
  outline: none;
}

.pbx-help-tip .pbx-tooltip-box {
  position: absolute;
  bottom: calc(100% + 7px);
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  background: #0f172a;
  color: #f8fafc;
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 400;
  line-height: 1.45;
  white-space: normal;
  width: max-content;
  min-width: 160px;
  max-width: 270px;
  text-align: left;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.4), 0 8px 10px -6px rgba(0, 0, 0, 0.3);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
  z-index: 9999;
}

.pbx-help-tip .pbx-tooltip-box::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border-width: 5px;
  border-style: solid;
  border-color: #0f172a transparent transparent transparent;
}

.pbx-help-tip:hover .pbx-tooltip-box,
.pbx-help-tip:focus .pbx-tooltip-box,
.pbx-help-tip.active .pbx-tooltip-box {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

/* Left & Right alignment helpers when tooltips are near viewport edges */
.pbx-help-tip.tip-align-right .pbx-tooltip-box {
  left: auto;
  right: -10px;
  transform: translateY(4px);
}
.pbx-help-tip.tip-align-right .pbx-tooltip-box::after {
  left: auto;
  right: 14px;
  transform: none;
}
.pbx-help-tip.tip-align-right:hover .pbx-tooltip-box,
.pbx-help-tip.tip-align-right:focus .pbx-tooltip-box,
.pbx-help-tip.tip-align-right.active .pbx-tooltip-box {
  transform: translateY(0);
}

.pbx-help-tip.tip-align-left .pbx-tooltip-box {
  left: -10px;
  transform: translateY(4px);
}
.pbx-help-tip.tip-align-left .pbx-tooltip-box::after {
  left: 14px;
  transform: none;
}
.pbx-help-tip.tip-align-left:hover .pbx-tooltip-box,
.pbx-help-tip.tip-align-left:focus .pbx-tooltip-box,
.pbx-help-tip.tip-align-left.active .pbx-tooltip-box {
  transform: translateY(0);
}

/* ==========================================================================
   Party Number Badges & Classification Pills (Ext, Queue, VM, DID, Mobile, PSTN)
   ========================================================================== */
.pbx-party-pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 2px 7px 2px 3px;
  border-radius: 6px;
  font-size: 12.5px;
  line-height: 1.4;
  border: 1px solid transparent;
  transition: all 0.15s ease;
  vertical-align: middle;
  cursor: default;
  max-width: 100%;
}

.pbx-party-pill:hover {
  filter: brightness(0.96);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

.pbx-party-badge {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 1px 5px;
  border-radius: 4px;
  font-size: 10.5px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  line-height: 1.2;
}

.pbx-party-badge svg {
  flex-shrink: 0;
}

.pbx-party-number {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-weight: 600;
  letter-spacing: 0.2px;
}

/* 1. Extension: Blue */
.pbx-party-pill-ext {
  background: #eff6ff;
  border-color: #bfdbfe;
  color: #1e40af;
}
.pbx-party-pill-ext .pbx-party-badge {
  background: #dbeafe;
  color: #1d4ed8;
}

/* 2. Queue: Purple */
.pbx-party-pill-queue {
  background: #fbf5ff;
  border-color: #e9d5ff;
  color: #6b21a8;
}
.pbx-party-pill-queue .pbx-party-badge {
  background: #f3e8ff;
  color: #7e22ce;
}

/* 3. Voicemail: Amber */
.pbx-party-pill-vm {
  background: #fffbeb;
  border-color: #fde68a;
  color: #92400e;
}
.pbx-party-pill-vm .pbx-party-badge {
  background: #fef3c7;
  color: #b45309;
}

/* 4. DID: Sky / Cyan */
.pbx-party-pill-did {
  background: #f0f9ff;
  border-color: #bae6fd;
  color: #0369a1;
}
.pbx-party-pill-did .pbx-party-badge {
  background: #e0f2fe;
  color: #0284c7;
}

/* 5. Mobile: Emerald */
.pbx-party-pill-mobile {
  background: #ecfdf5;
  border-color: #a7f3d0;
  color: #065f46;
}
.pbx-party-pill-mobile .pbx-party-badge {
  background: #d1fae5;
  color: #047857;
}

/* 6. Landline: Green */
.pbx-party-pill-landline {
  background: #f0fdf4;
  border-color: #bbf7d0;
  color: #166534;
}
.pbx-party-pill-landline .pbx-party-badge {
  background: #dcfce7;
  color: #15803d;
}

/* 7. IVR: Indigo */
.pbx-party-pill-ivr {
  background: #eef2ff;
  border-color: #c7d2fe;
  color: #3730a3;
}
.pbx-party-pill-ivr .pbx-party-badge {
  background: #e0e7ff;
  color: #4338ca;
}

/* 8. Conference: Rose / Pink */
.pbx-party-pill-conf {
  background: #fff1f2;
  border-color: #fecdd3;
  color: #9f1239;
}
.pbx-party-pill-conf .pbx-party-badge {
  background: #ffe4e6;
  color: #be123c;
}

/* 9. External general / Unknown */
.pbx-party-pill-external,
.pbx-party-pill-unknown {
  background: #f8fafc;
  border-color: #e2e8f0;
  color: #334155;
}
.pbx-party-pill-external .pbx-party-badge,
.pbx-party-pill-unknown .pbx-party-badge {
  background: #f1f5f9;
  color: #475569;
}

/* ==========================================================================
   Shortkey & Feature Codes Keypad Badges
   ========================================================================== */
.pbx-kbd-key {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 42px;
  padding: 4px 10px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 13.5px;
  font-weight: 800;
  line-height: 1.2;
  color: #1e293b;
  background: linear-gradient(180deg, #ffffff 0%, #f1f5f9 100%);
  border: 1px solid #cbd5e1;
  border-bottom: 2.5px solid #94a3b8;
  border-radius: 6px;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.08);
  letter-spacing: 0.5px;
  user-select: none;
}

.pbx-kbd-key.pbx-kbd-feature {
  color: #1d4ed8;
  border-color: #93c5fd;
  border-bottom-color: #2563eb;
  background: linear-gradient(180deg, #eff6ff 0%, #dbeafe 100%);
}

.pbx-feature-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 14px;
}

.pbx-feature-ref-card {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  padding: 14px 16px;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  transition: all 0.15s ease;
}

.pbx-feature-ref-card:hover {
  border-color: #cbd5e1;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
}

.pbx-feature-ref-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 16px;
}