/**
 * Q Cargo - QX Admin Theme (Erp2X Design Spec)
 * Version: 1.0.0
 * Works on top of Bootstrap 5.3.3
 * Note: Colors are strictly defined as CSS variables. No hex values outside variable blocks.
 */

/* ==========================================================================
   1. Theme Variables
   ========================================================================== */

:root {
  /* Brand palette */
  --brand-primary: #6B0F24;
  --brand-primary-hover: #4F0A1A;
  --brand-soft: rgba(107, 15, 36, 0.10);
  --brand-secondary: #505967;
  --brand-secondary-hover: #444C58;
  --brand-secondary-soft: rgba(80, 89, 103, 0.10);

  /* Surface & neutral palette - Light */
  --page-background: #F6F7F9;
  --surface: #FFFFFF;
  --surface-muted: #F0F2F5;
  --border-color: #E2E5EA;
  --text-main: #20242B;
  --text-muted: #6D7480;

  /* Glassmorphism */
  --glass-surface: rgba(255, 255, 255, 0.68);
  --glass-border: rgba(255, 255, 255, 0.78);
  --glass-shadow: 0 18px 45px rgba(46, 39, 45, 0.10);

  /* Accents & standard tokens */
  --shadow-primary-cta: 0 8px 18px rgba(107, 15, 36, 0.20);
  --color-white: #FFFFFF;
  --color-black: #000000;
  --color-notification: #DC3545;
  --backdrop-bg: rgba(23, 25, 29, 0.50);

  /* Status badge tokens - Light */
  --badge-success-bg: rgba(25, 135, 84, 0.12);
  --badge-success-text: #0F5132;
  --badge-danger-bg: rgba(220, 53, 69, 0.12);
  --badge-danger-text: #842029;
  --badge-warning-bg: rgba(255, 193, 7, 0.18);
  --badge-warning-text: #664D03;
  --badge-info-bg: rgba(13, 202, 240, 0.15);
  --badge-info-text: #055160;
  --badge-muted-bg: rgba(108, 117, 125, 0.12);
  --badge-muted-text: #41464B;

  /* Focus ring token */
  --focus-ring-box-shadow: 0 0 0 2px var(--brand-soft);
}

[data-qx-theme="dark"] {
  /* Surface & neutral palette - Dark */
  --page-background: #17191D;
  --surface: #22252B;
  --surface-muted: #2B2F36;
  --border-color: #383D46;
  --text-main: #F3F4F6;
  --text-muted: #AEB5C0;

  /* Glassmorphism - Dark */
  --glass-surface: rgba(34, 37, 43, 0.76);
  --glass-border: rgba(255, 255, 255, 0.12);
  --glass-shadow: 0 18px 45px rgba(0, 0, 0, 0.24);

  /* Accents & standard tokens - Dark */
  --backdrop-bg: rgba(0, 0, 0, 0.70);

  /* Status badge tokens - Dark */
  --badge-success-bg: rgba(40, 167, 69, 0.22);
  --badge-success-text: #75B798;
  --badge-danger-bg: rgba(220, 53, 69, 0.22);
  --badge-danger-text: #EA868F;
  --badge-warning-bg: rgba(255, 193, 7, 0.22);
  --badge-warning-text: #FFDA6A;
  --badge-info-bg: rgba(13, 202, 240, 0.22);
  --badge-info-text: #6EDFF6;
  --badge-muted-bg: rgba(174, 181, 192, 0.20);
  --badge-muted-text: #CED4DA;
}

/* ==========================================================================
   2. Base & Typography
   ========================================================================== */

html {
  font-size: 90%;
  box-sizing: border-box;
}

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

body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", "Noto Sans", "Liberation Sans", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
  background-color: var(--page-background);
  color: var(--text-main);
  min-height: 100vh;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--brand-primary);
  text-decoration: none;
  transition: color 0.15s ease-in-out;
}

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

/* ==========================================================================
   3. Bootstrap Overrides & Mappings
   ========================================================================== */

/* Buttons */
.btn-primary {
  --bs-btn-bg: var(--brand-primary);
  --bs-btn-border-color: var(--brand-primary);
  --bs-btn-hover-bg: var(--brand-primary-hover);
  --bs-btn-hover-border-color: var(--brand-primary-hover);
  --bs-btn-active-bg: var(--brand-primary-hover);
  --bs-btn-active-border-color: var(--brand-primary-hover);
  --bs-btn-disabled-bg: var(--brand-primary);
  --bs-btn-disabled-border-color: var(--brand-primary);
  --bs-btn-color: var(--color-white);
  --bs-btn-hover-color: var(--color-white);
  --bs-btn-active-color: var(--color-white);
  --bs-btn-disabled-color: var(--color-white);
  box-shadow: var(--shadow-primary-cta);
  border-radius: 0.5rem;
  font-weight: 500;
}

.btn-secondary {
  --bs-btn-bg: var(--brand-secondary);
  --bs-btn-border-color: var(--brand-secondary);
  --bs-btn-hover-bg: var(--brand-secondary-hover);
  --bs-btn-hover-border-color: var(--brand-secondary-hover);
  --bs-btn-active-bg: var(--brand-secondary-hover);
  --bs-btn-active-border-color: var(--brand-secondary-hover);
  --bs-btn-disabled-bg: var(--brand-secondary);
  --bs-btn-disabled-border-color: var(--brand-secondary);
  --bs-btn-color: var(--color-white);
  --bs-btn-hover-color: var(--color-white);
  --bs-btn-active-color: var(--color-white);
  --bs-btn-disabled-color: var(--color-white);
  border-radius: 0.5rem;
  font-weight: 500;
}

.btn-outline-secondary {
  --bs-btn-color: var(--brand-secondary);
  --bs-btn-border-color: var(--brand-secondary);
  --bs-btn-hover-bg: var(--brand-secondary);
  --bs-btn-hover-border-color: var(--brand-secondary);
  --bs-btn-hover-color: var(--color-white);
  --bs-btn-active-bg: var(--brand-secondary-hover);
  --bs-btn-active-border-color: var(--brand-secondary-hover);
  --bs-btn-active-color: var(--color-white);
  --bs-btn-disabled-color: var(--brand-secondary);
  --bs-btn-disabled-border-color: var(--brand-secondary);
  border-radius: 0.5rem;
  font-weight: 500;
}

.btn-outline-primary {
  --bs-btn-color: var(--brand-primary);
  --bs-btn-border-color: var(--brand-primary);
  --bs-btn-hover-bg: var(--brand-primary);
  --bs-btn-hover-border-color: var(--brand-primary);
  --bs-btn-hover-color: var(--color-white);
  --bs-btn-active-bg: var(--brand-primary-hover);
  --bs-btn-active-border-color: var(--brand-primary-hover);
  --bs-btn-active-color: var(--color-white);
  --bs-btn-disabled-color: var(--brand-primary);
  --bs-btn-disabled-border-color: var(--brand-primary);
  border-radius: 0.5rem;
  font-weight: 500;
}

.btn:focus-visible {
  outline: 0;
  box-shadow: var(--focus-ring-box-shadow);
}

/* Form Controls */
.form-control,
.form-select {
  background-color: var(--surface);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  border-radius: 0.5rem;
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

.form-control:focus,
.form-select:focus {
  background-color: var(--surface);
  border-color: var(--brand-primary);
  color: var(--text-main);
  box-shadow: var(--focus-ring-box-shadow);
  outline: 0;
}

.form-control::placeholder {
  color: var(--text-muted);
  opacity: 0.8;
}

.form-control:disabled,
.form-select:disabled {
  background-color: var(--surface-muted);
  border-color: var(--border-color);
  color: var(--text-muted);
  opacity: 0.85;
}

.form-check-input {
  background-color: var(--surface);
  border: 1px solid var(--border-color);
}

.form-check-input:checked {
  background-color: var(--brand-primary);
  border-color: var(--brand-primary);
}

.form-check-input:focus {
  border-color: var(--brand-primary);
  box-shadow: var(--focus-ring-box-shadow);
  outline: 0;
}

.form-floating > .form-control:focus ~ label,
.form-floating > .form-control:not(:placeholder-shown) ~ label,
.form-floating > .form-select ~ label {
  color: var(--text-muted);
}

.form-floating > label {
  color: var(--text-muted);
}

/* Cards */
.card {
  background-color: var(--surface);
  border: 1px solid var(--border-color);
  border-radius: 0.65rem;
  color: var(--text-main);
  box-shadow: none;
}

.card-header {
  background-color: transparent;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-main);
  font-weight: 600;
  padding: 0.85rem 1.25rem;
}

.card-body {
  padding: 1.25rem;
}

.card-footer {
  background-color: transparent;
  border-top: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 0.75rem 1.25rem;
}

/* Tables */
.table {
  --bs-table-bg: transparent;
  --bs-table-color: var(--text-main);
  --bs-table-border-color: var(--border-color);
  color: var(--text-main);
  border-color: var(--border-color);
  vertical-align: middle;
  margin-bottom: 0;
}

.table thead th {
  background-color: var(--surface-muted);
  color: var(--text-muted);
  font-size: 0.725rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
  border-bottom: 1px solid var(--border-color);
  padding: 0.7rem 0.85rem;
  white-space: nowrap;
}

.table tbody td {
  border-bottom: 1px solid var(--border-color);
  padding: 0.75rem 0.85rem;
  color: var(--text-main);
  font-size: 0.85rem;
}

.table tbody tr:hover td {
  background-color: var(--surface-muted);
}

.table .num,
.table td.num,
.table th.num {
  text-align: right;
  font-variant-numeric: tabular-nums;
}

/* Status Badges */
.qx-badge-success,
.qx-badge-danger,
.qx-badge-warning,
.qx-badge-info,
.qx-badge-muted {
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.25em 0.75em;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  line-height: 1.2;
}

.qx-badge-success {
  background-color: var(--badge-success-bg);
  color: var(--badge-success-text);
}

.qx-badge-danger {
  background-color: var(--badge-danger-bg);
  color: var(--badge-danger-text);
}

.qx-badge-warning {
  background-color: var(--badge-warning-bg);
  color: var(--badge-warning-text);
}

.qx-badge-info {
  background-color: var(--badge-info-bg);
  color: var(--badge-info-text);
}

.qx-badge-muted {
  background-color: var(--badge-muted-bg);
  color: var(--badge-muted-text);
}

/* Filter Chips */
.qx-chips-bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  overflow-x: auto;
  padding: 0.25rem 0;
  white-space: nowrap;
  -ms-overflow-style: none;
  scrollbar-width: none;
}

.qx-chips-bar::-webkit-scrollbar {
  display: none;
}

.qx-chip {
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.9rem;
  border-radius: 999px;
  font-size: 0.825rem;
  font-weight: 500;
  border: 1px solid var(--border-color);
  background-color: var(--surface);
  color: var(--text-main);
  cursor: pointer;
  user-select: none;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
  text-decoration: none;
}

.qx-chip:hover {
  background-color: var(--surface-muted);
  color: var(--text-main);
}

.qx-chip.active {
  background-color: var(--brand-primary);
  border-color: var(--brand-primary);
  color: var(--color-white);
}

/* Modals */
.modal-content {
  background-color: var(--surface);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  border-radius: 0.65rem;
  box-shadow: var(--glass-shadow);
}

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

.modal-title {
  color: var(--text-main);
  font-weight: 600;
  font-size: 1.1rem;
}

.modal-body {
  padding: 1.25rem;
  color: var(--text-main);
}

.modal-footer {
  border-top: 1px solid var(--border-color);
  padding: 0.85rem 1.25rem;
}

.modal-backdrop.show {
  opacity: 1;
  background-color: var(--backdrop-bg);
}

/* Toasts */
.toast-container {
  position: fixed;
  top: 1rem;
  right: 1rem;
  z-index: 1080;
}

.toast {
  background-color: var(--surface);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  box-shadow: var(--glass-shadow);
}

.toast-header {
  background-color: var(--surface);
  color: var(--text-main);
  border-bottom: 1px solid var(--border-color);
  font-weight: 600;
}

.toast-body {
  padding: 0.75rem 1rem;
  font-size: 0.875rem;
}

/* Dropdown Menus */
.dropdown-menu {
  background-color: var(--surface);
  border: 1px solid var(--border-color);
  border-radius: 0.65rem;
  box-shadow: var(--glass-shadow);
  padding: 0.5rem;
}

.dropdown-item {
  color: var(--text-main);
  border-radius: 0.35rem;
  padding: 0.45rem 0.85rem;
  font-size: 0.85rem;
}

.dropdown-item:hover,
.dropdown-item:focus {
  background-color: var(--surface-muted);
  color: var(--text-main);
}

.dropdown-item.active,
.dropdown-item:active {
  background-color: var(--brand-soft);
  color: var(--brand-primary);
  font-weight: 600;
}

.dropdown-divider {
  border-top: 1px solid var(--border-color);
  margin: 0.4rem 0;
}

/* ==========================================================================
   4. Right-side Drawer (.qx-drawer)
   ========================================================================== */

.qx-drawer-backdrop {
  position: fixed;
  inset: 0;
  background-color: var(--backdrop-bg);
  z-index: 1040;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}

.qx-drawer-backdrop.show {
  opacity: 1;
  visibility: visible;
}

.qx-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 60%;
  max-width: 100%;
  background-color: var(--surface);
  color: var(--text-main);
  border-left: 1px solid var(--border-color);
  box-shadow: var(--glass-shadow);
  z-index: 1050;
  transform: translateX(100%);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.qx-drawer.open,
.qx-drawer.show {
  transform: translateX(0);
}

.qx-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.15rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
  background-color: var(--surface);
  flex-shrink: 0;
}

.qx-drawer-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 0;
  color: var(--text-main);
}

.qx-drawer-body {
  padding: 1.5rem;
  overflow-y: auto;
  flex: 1 1 auto;
}

.qx-drawer-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.75rem;
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border-color);
  background-color: var(--surface);
  flex-shrink: 0;
}

body.qx-drawer-open {
  overflow: hidden;
}

/* ==========================================================================
   5. Admin Layout Classes (Desktop)
   ========================================================================== */

.qx-app {
  display: grid;
  grid-template-columns: 78px 250px 1fr;
  grid-template-rows: 1fr;
  gap: 8px;
  height: 100vh;
  padding: 8px;
  box-sizing: border-box;
  overflow: hidden;
  background-color: var(--page-background);
  transition: grid-template-columns 0.25s ease;
}

/* Collapsed Panel state */
.qx-app.panel-collapsed {
  grid-template-columns: 78px 0px 1fr;
}

/* Left Icon Rail */
.qx-rail {
  width: 78px;
  height: 100%;
  background-color: var(--surface);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  box-shadow: var(--glass-shadow);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 12px 6px;
  overflow: hidden;
  position: relative;
  flex-shrink: 0;
}

.qx-rail-logo {
  width: 50px;
  height: 50px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 12px;
  flex-shrink: 0;
  background-color: var(--surface-muted);
  color: var(--brand-primary);
  font-weight: 700;
  font-size: 1.15rem;
  text-decoration: none;
}

.qx-rail-logo img {
  max-width: 36px;
  max-height: 36px;
  object-fit: contain;
}

.qx-rail-nav {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  width: 100%;
  flex: 1 1 auto;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 4px 0;
  scrollbar-width: none;
}

.qx-rail-nav::-webkit-scrollbar {
  display: none;
}

.qx-rail-bottom {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  width: 100%;
  padding-top: 8px;
  border-top: 1px solid var(--border-color);
  flex-shrink: 0;
}

.qx-rail-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 64px;
  min-height: 56px;
  border-radius: 12px;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.68rem;
  font-weight: 500;
  text-align: center;
  padding: 6px 2px;
  cursor: pointer;
  background: transparent;
  border: none;
  transition: background-color 0.15s ease, color 0.15s ease;
}

.qx-rail-item i {
  font-size: 1.25rem;
  line-height: 1;
  margin-bottom: 3px;
  display: block;
}

.qx-rail-item .qx-rail-label {
  font-size: 0.65rem;
  line-height: 1.1;
  max-width: 60px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  display: block;
}

.qx-rail-item:hover {
  background-color: var(--surface-muted);
  color: var(--text-main);
}

.qx-rail-item.active {
  background-color: var(--brand-primary);
  color: var(--color-white);
}

.qx-rail-item.active i,
.qx-rail-item.active .qx-rail-label {
  color: var(--color-white);
}

/* Secondary Menu Panel */
.qx-panel {
  width: 250px;
  height: 100%;
  background-color: var(--surface);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  box-shadow: var(--glass-shadow);
  display: flex;
  flex-direction: column;
  overflow: visible;
  position: relative;
  flex-shrink: 0;
  transition: width 0.25s ease, opacity 0.2s ease, border-width 0.2s ease;
}

.qx-app.panel-collapsed .qx-panel {
  width: 0;
  min-width: 0;
  max-width: 0;
  padding: 0;
  border-width: 0;
}

.qx-app.panel-collapsed .qx-panel > :not(.qx-panel-toggle) {
  display: none !important;
}

.qx-panel-toggle {
  position: absolute;
  top: 24px;
  right: -13px;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background-color: var(--surface);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  box-shadow: var(--glass-shadow);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 30;
  padding: 0;
  transition: transform 0.2s ease, background-color 0.15s, color 0.15s;
}

.qx-panel-toggle:hover {
  background-color: var(--surface-muted);
  color: var(--brand-primary);
}

.qx-panel-toggle i {
  font-size: 0.75rem;
  transition: transform 0.25s ease;
}

.qx-app.panel-collapsed .qx-panel-toggle i {
  transform: rotate(180deg);
}

.qx-panel-header {
  padding: 12px 14px 8px;
  border-bottom: 1px solid var(--border-color);
  flex-shrink: 0;
}

.qx-panel-search {
  position: relative;
}

.qx-panel-search input {
  font-size: 0.825rem;
  padding: 0.4rem 0.65rem 0.4rem 2rem;
  background-color: var(--surface-muted);
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  width: 100%;
}

.qx-panel-search .qx-search-icon {
  position: absolute;
  left: 0.65rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 0.85rem;
  pointer-events: none;
}

.qx-panel-body {
  flex: 1 1 auto;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 8px;
}

.qx-menu {
  display: none;
  list-style: none;
  padding: 0;
  margin: 0;
}

.qx-menu.active {
  display: block;
}

.qx-menu-header {
  padding: 0.75rem 0.75rem 0.35rem;
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.qx-menu-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0.5rem 0.75rem;
  border-radius: 0.5rem;
  color: var(--text-main);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  transition: background-color 0.15s ease, color 0.15s ease;
  margin-bottom: 2px;
  cursor: pointer;
}

.qx-menu-item i {
  font-size: 1.1rem;
  color: var(--text-muted);
  line-height: 1;
  width: 18px;
  text-align: center;
}

.qx-menu-item:hover {
  background-color: var(--surface-muted);
  color: var(--text-main);
}

.qx-menu-item.active {
  background-color: var(--brand-soft);
  color: var(--brand-primary);
  font-weight: 600;
}

.qx-menu-item.active i {
  color: var(--brand-primary);
}

/* Menu Groups with rotate chevron */
.qx-menu-group {
  margin-bottom: 2px;
}

.qx-menu-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 0.75rem;
  border-radius: 0.5rem;
  background: transparent;
  border: none;
  color: var(--text-main);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  text-align: left;
  transition: background-color 0.15s;
}

.qx-menu-toggle-label {
  display: flex;
  align-items: center;
  gap: 10px;
}

.qx-menu-toggle-label i {
  font-size: 1.1rem;
  color: var(--text-muted);
  line-height: 1;
  width: 18px;
  text-align: center;
}

.qx-menu-toggle:hover {
  background-color: var(--surface-muted);
}

.qx-chevron {
  font-size: 0.75rem;
  color: var(--text-muted);
  transition: transform 0.2s ease;
}

.qx-menu-group.open > .qx-menu-toggle .qx-chevron {
  transform: rotate(90deg);
}

.qx-submenu {
  display: none;
  padding-left: 1.5rem;
  margin-top: 2px;
  margin-bottom: 4px;
}

.qx-menu-group.open > .qx-submenu {
  display: block;
}

.qx-panel-footer {
  padding: 0.75rem 1rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--surface);
  font-size: 0.8rem;
  border-bottom-left-radius: 16px;
  border-bottom-right-radius: 16px;
  flex-shrink: 0;
}

.qx-panel-footer .qx-version {
  color: var(--text-muted);
  font-size: 0.725rem;
}

/* Main Content Area */
.qx-main {
  display: flex;
  flex-direction: column;
  min-width: 0;
  height: 100%;
  overflow: hidden;
  gap: 8px;
}

/* Top Header Bar */
.qx-header {
  background-color: var(--surface);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 0.65rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 58px;
  box-shadow: var(--glass-shadow);
  flex-shrink: 0;
}

.qx-header-left,
.qx-header-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.qx-header-title {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-main);
  margin: 0;
}

.qx-icon-btn {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: transparent;
  border: 1px solid transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: background-color 0.15s, color 0.15s;
  text-decoration: none;
  padding: 0;
  position: relative;
}

.qx-icon-btn:hover {
  background-color: var(--surface-muted);
  color: var(--brand-primary);
}

.qx-icon-btn .qx-dot {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-notification);
  border: 2px solid var(--surface);
}

.qx-menu-btn {
  display: none;
}

/* Content Area */
.qx-content {
  flex: 1 1 auto;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 0.5rem 0.25rem;
}

/* Slim Footer */
.qx-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.4rem 1rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  flex-shrink: 0;
}

/* Off-canvas Backdrop for Mobile */
.qx-menu-backdrop {
  position: fixed;
  inset: 0;
  background-color: var(--backdrop-bg);
  z-index: 1040;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}

/* ==========================================================================
   6. Responsive Layout (< 992px Phone / Tablet)
   ========================================================================== */

@media (max-width: 991.98px) {
  .qx-app {
    display: flex;
    flex-direction: column;
    padding: 0;
    gap: 0;
    height: 100vh;
    overflow: hidden;
  }

  /* Rail and Panel become one off-canvas sheet */
  .qx-rail {
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    width: 72px;
    height: 100vh;
    border-radius: 0;
    z-index: 1045;
    transform: translateX(-360px);
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    border-right: 1px solid var(--border-color);
    border-top: none;
    border-bottom: none;
    border-left: none;
  }

  .qx-panel {
    position: fixed;
    top: 0;
    bottom: 0;
    left: 72px;
    width: 260px;
    max-width: calc(100vw - 72px);
    height: 100vh;
    border-radius: 0;
    z-index: 1045;
    transform: translateX(-360px);
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    border-right: 1px solid var(--border-color);
    border-top: none;
    border-bottom: none;
    border-left: none;
    box-shadow: var(--glass-shadow);
  }

  .qx-app.menu-open .qx-rail,
  .qx-app.menu-open .qx-panel {
    transform: translateX(0);
  }

  .qx-app.menu-open .qx-menu-backdrop {
    opacity: 1;
    visibility: visible;
  }

  .qx-panel-toggle {
    display: none !important;
  }

  .qx-menu-btn {
    display: inline-flex !important;
  }

  .qx-header {
    border-radius: 0;
    border-left: none;
    border-right: none;
    border-top: none;
    padding: 0.5rem 1rem;
    min-height: 52px;
  }

  .qx-main {
    height: 100vh;
    gap: 0;
  }

  .qx-content {
    padding: 0.75rem;
  }

  /* Full width drawer on phone */
  .qx-drawer {
    width: 100%;
  }
}