/**
 * OTP Design System - Custom Overrides
 * Reserved for admin customizations and theme-specific tweaks
 * Part of Phase 3: CSS Consolidation
 *
 * This file is intentionally minimal. All base styles are in:
 * - public/base.css (CSS variables, resets, typography)
 * - public/components.css (component styles)
 * - public/utilities.css (responsive helpers)
 *
 * Use this file to override styles for specific admin needs,
 * or to add custom theme variations without modifying core files.
 */

/* ============================================================================
   THEME 4: DENSE (ThingsBoard-inspired)
   High information density, enterprise-focused, deep blue sidebar
   Best for: Data-heavy dashboards, operations centers
   ============================================================================ */

:root.theme-dense {
  /* =========================================================================
     DENSE THEME - COLOR SYSTEM
     ========================================================================= */

  /* Sidebar colors - Deep blue professional */
  --sidebar-bg: #16425b;
  --sidebar-text: #ffffff;
  --sidebar-hover-bg: #1a5a8a;
  --sidebar-active-bg: #2196f3;
  --sidebar-border: #0d2e3f;

  /* Main content area */
  --main-bg: #f5f5f5;
  --content-bg: #ffffff;

  /* Borders */
  --border-subtle: #e0e0e0;

  /* Primary colors (keeping professional blue) */
  --color-primary: #2196f3;
  --color-primary-hover: #1976d2;
  --color-primary-active: #1565c0;
  --color-primary-light: #e3f2fd;

  /* Override backgrounds */
  --color-bg: #ffffff;
  --color-bg-secondary: #f5f5f5;
  --color-bg-tertiary: #eeeeee;
  --pico-background-color: #ffffff;

  /* =========================================================================
     DENSE THEME - SPACING SYSTEM (Ultra-compact)
     ========================================================================= */
  --spacing-xs: 0.125rem;     /* 2px - minimal gaps */
  --spacing-sm: 0.25rem;      /* 4px - tight gaps */
  --spacing-md: 0.5rem;       /* 8px - default spacing */
  --spacing-lg: 0.75rem;      /* 12px - larger gaps */
  --spacing-xl: 1rem;         /* 16px - extra large */

  --spacing-block-vertical: 0.5rem;
  --spacing-block-horizontal: 0.5rem;

  /* =========================================================================
     DENSE THEME - TYPOGRAPHY (Smaller, tighter)
     ========================================================================= */
  --font-size-base: 13px;     /* Smaller base font */
  --line-height-base: 1.3;    /* Tighter line height */

  --font-size-xs: 0.6875rem;  /* 11px */
  --font-size-sm: 0.8125rem;  /* 13px */
  --font-size-md: 0.875rem;   /* 14px */
  --font-size-lg: 1rem;       /* 16px */

  /* Override Pico typography */
  --pico-font-size: 13px;
  --pico-line-height: 1.3;
  --pico-font-size-h1: 1.375rem;  /* 22px */
  --pico-font-size-h2: 1.25rem;   /* 20px */
  --pico-font-size-h3: 1.125rem;  /* 18px */
  --pico-font-size-h4: 1rem;      /* 16px */
  --pico-font-size-h5: 0.875rem;  /* 14px */
  --pico-font-size-h6: 0.8125rem; /* 13px */
  --pico-typography-spacing-vertical: 0.5rem;

  /* =========================================================================
     DENSE THEME - COMPONENT TOKENS
     ========================================================================= */

  /* Buttons - Ultra compact */
  --button-padding-vertical: 0.25rem;      /* 4px */
  --button-padding-horizontal: 0.5rem;     /* 8px */
  --button-font-size: 0.8125rem;           /* 13px */

  /* Form elements - Tight */
  --form-element-padding-vertical: 0.25rem;    /* 4px */
  --form-element-padding-horizontal: 0.5rem;   /* 8px */
  --form-element-font-size: 0.8125rem;         /* 13px */

  /* Cards - Minimal padding */
  --card-padding: 0.5rem;                  /* 8px */

  /* Tables - Compact */
  --table-padding: 0.25rem 0.5rem;         /* 4px 8px */
  --table-font-size: 0.8125rem;            /* 13px */
  --table-header-font-size: 0.75rem;       /* 12px */

  /* Navigation - Tight */
  --nav-element-padding-vertical: 0.25rem;     /* 4px */
  --nav-element-padding-horizontal: 0.5rem;    /* 8px */
  --nav-link-padding-vertical: 0.25rem;
  --nav-link-padding-horizontal: 0.5rem;

  /* Layout - Compact dimensions */
  --sidebar-width: 220px;                  /* Narrower sidebar */
  --sidebar-width-collapsed: 52px;         /* Tighter collapsed */
  --header-height: 48px;                   /* Shorter header */

  /* Override Pico spacing */
  --pico-spacing: 0.5rem;
  --pico-block-spacing-vertical: 0.5rem;
  --pico-block-spacing-horizontal: 0.5rem;
  --pico-form-element-spacing-vertical: 0.25rem;
  --pico-form-element-spacing-horizontal: 0.5rem;
  --pico-nav-element-spacing-vertical: 0.25rem;
  --pico-nav-element-spacing-horizontal: 0.5rem;
  --pico-nav-link-spacing-vertical: 0.25rem;
  --pico-nav-link-spacing-horizontal: 0.5rem;
}

/* ============================================================================
   DENSE THEME - GLOBAL ELEMENT OVERRIDES
   ============================================================================ */

html.theme-dense body {
  font-size: 13px;
  line-height: 1.3;
}

/* Tighter headings */
html.theme-dense h1 { font-size: 1.375rem; margin-bottom: 0.5rem; }
html.theme-dense h2 { font-size: 1.25rem; margin-bottom: 0.375rem; }
html.theme-dense h3 { font-size: 1.125rem; margin-bottom: 0.375rem; }
html.theme-dense h4 { font-size: 1rem; margin-bottom: 0.25rem; }
html.theme-dense h5 { font-size: 0.875rem; margin-bottom: 0.25rem; }
html.theme-dense h6 { font-size: 0.8125rem; margin-bottom: 0.25rem; }

html.theme-dense p,
html.theme-dense ul,
html.theme-dense ol {
  margin-bottom: 0.5rem;
}

/* Compact containers */
html.theme-dense .container,
html.theme-dense .container-fluid {
  padding: 0.5rem;
}

/* Tighter articles */
html.theme-dense article {
  padding: 0.5rem 0.75rem;
  margin-bottom: 0.5rem;
}

/* Compact buttons */
html.theme-dense button,
html.theme-dense [type="button"],
html.theme-dense [type="submit"],
html.theme-dense [type="reset"],
html.theme-dense [role="button"],
html.theme-dense a[role="button"] {
  padding: 0.25rem 0.5rem;
  font-size: 0.8125rem;
}

html.theme-dense button.small {
  padding: 0.125rem 0.375rem;
  font-size: 0.75rem;
}

/* Compact form elements */
html.theme-dense input,
html.theme-dense select,
html.theme-dense textarea {
  padding: 0.25rem 0.5rem;
  font-size: 0.8125rem;
}

/* Fix radio and checkbox sizing - maintain proper aspect ratio */
html.theme-dense input[type="radio"],
html.theme-dense input[type="checkbox"] {
  width: 1rem;
  height: 1rem;
  padding: 0;
  margin: 0;
  flex-shrink: 0;
}

/* Ensure radio buttons are circular */
html.theme-dense input[type="radio"] {
  border-radius: 50%;
  aspect-ratio: 1 / 1;
}

/* Ensure checkboxes are square */
html.theme-dense input[type="checkbox"] {
  border-radius: 0.125rem;
  aspect-ratio: 1 / 1;
}

html.theme-dense label {
  margin-bottom: 0.25rem;
  font-size: 0.8125rem;
}

/* Compact tables */
html.theme-dense table {
  font-size: 0.8125rem;
}

html.theme-dense th,
html.theme-dense td {
  padding: 0.25rem 0.5rem;
}

html.theme-dense th {
  font-size: 0.75rem;
}

/* Compact nav spacing */
html.theme-dense nav ul li {
  padding: 0.25rem 0.5rem;
}

/* Smaller footer */
html.theme-dense footer {
  padding: 0.5rem;
  font-size: 0.75rem;
}

/* ============================================================================
   DENSE THEME - HEADER OVERRIDES (ThingsBoard style)
   ============================================================================ */

/* Header background - Deep blue matching sidebar */
html.theme-dense header.container-fluid {
  background: var(--sidebar-bg);
  border-bottom: 1px solid var(--sidebar-border);
  padding: 0.25rem 0.75rem;
  min-height: var(--header-height);
}

/* Header navigation text - White */
html.theme-dense header nav {
  color: var(--sidebar-text);
}

html.theme-dense header nav ul li {
  margin: 0 0.125rem;
}

/* Brand link - White text */
html.theme-dense header nav ul li a[href="/"] {
  color: rgba(255, 255, 255, 0.95);
  text-decoration: none;
}

html.theme-dense header nav ul li strong a {
  color: #ffffff;
  font-weight: 600;
}

/* Compact header buttons - White outline style */
html.theme-dense header button.secondary.outline {
  padding: 0.25rem 0.5rem;
  font-size: 0.8125rem;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: rgba(255, 255, 255, 0.9);
}

html.theme-dense header button.secondary.outline:hover {
  background: var(--sidebar-hover-bg);
  border-color: rgba(255, 255, 255, 0.5);
  color: #ffffff;
}

html.theme-dense header button svg {
  width: 14px;
  height: 14px;
}

/* Smaller user avatar - White background variant */
html.theme-dense .user-avatar {
  width: 32px;
  height: 32px;
  font-size: 0.8125rem;
  padding: 0.25rem;
  background: rgba(255, 255, 255, 0.2);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.3);
}

html.theme-dense .user-avatar:hover {
  background: var(--sidebar-hover-bg);
  border-color: rgba(255, 255, 255, 0.5);
}

/* Notification bell - White style */
html.theme-dense header .notification-bell {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: rgba(255, 255, 255, 0.9);
  padding: 0.25rem 0.5rem;
}

html.theme-dense header .notification-bell:hover {
  background: var(--sidebar-hover-bg);
  border-color: rgba(255, 255, 255, 0.5);
  color: #ffffff;
}

/* Search button - Match other header buttons */
html.theme-dense header button[onclick*="openSearchModal"] {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: rgba(255, 255, 255, 0.9);
}

html.theme-dense header button[onclick*="openSearchModal"]:hover {
  background: var(--sidebar-hover-bg);
  border-color: rgba(255, 255, 255, 0.5);
  color: #ffffff;
}

/* Desktop-only items */
html.theme-dense .desktop-only button {
  padding: 0.25rem 0.5rem;
}

/* Mobile menu */
html.theme-dense .mobile-only details.dropdown > summary {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: rgba(255, 255, 255, 0.9);
  padding: 0.25rem 0.5rem;
  font-size: 1.25rem;
}

html.theme-dense .mobile-only details.dropdown > summary:hover {
  background: var(--sidebar-hover-bg);
  border-color: rgba(255, 255, 255, 0.5);
  color: #ffffff;
}

/* ============================================================================
   DENSE THEME - SIDEBAR OVERRIDES (ThingsBoard style)
   ============================================================================ */

/* Sidebar background - Deep blue */
html.theme-dense .app-sidebar {
  background: var(--sidebar-bg);
  border-right: 1px solid var(--sidebar-border);
  padding: 0.5rem 0;
}

/* Sidebar navigation */
html.theme-dense .sidebar-nav {
  padding: 0 0.25rem;
}

/* Navigation groups - Tighter */
html.theme-dense .sidebar-group {
  margin-bottom: 0.25rem;
}

html.theme-dense .sidebar-group:not(:first-child) {
  padding-top: 0.25rem;
  border-top: 1px solid var(--sidebar-border);
}

/* Group headers - Compact with white text */
html.theme-dense .sidebar-group-header {
  padding: 0.25rem 0.5rem;
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.85);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.025em;
  gap: 0.375rem;
}

html.theme-dense .sidebar-group-header:hover {
  background: var(--sidebar-hover-bg);
  color: #ffffff;
}

html.theme-dense .sidebar-group-header .group-icon {
  font-size: 0.875rem;
  width: 1rem;
}

html.theme-dense .sidebar-group-header .chevron {
  font-size: 0.625rem;
}

/* Sidebar links - Ultra compact with white text */
html.theme-dense .sidebar-link {
  padding: 0.25rem 0.5rem;
  font-size: 0.8125rem;
  min-height: 32px;
  color: rgba(255, 255, 255, 0.85);
  gap: 0.375rem;
}

html.theme-dense .sidebar-link:hover {
  background: var(--sidebar-hover-bg);
  color: #ffffff;
}

html.theme-dense .sidebar-link:active,
html.theme-dense .sidebar-link[aria-current="page"] {
  background: var(--sidebar-active-bg);
  color: #ffffff;
  font-weight: 600;
  border-left: 3px solid #ffffff;
  padding-left: calc(0.5rem - 3px);
}

/* Link icons - Smaller */
html.theme-dense .sidebar-link .link-icon {
  font-size: 0.875rem;
  width: 16px;
}

html.theme-dense .sidebar-link .link-icon svg {
  width: 14px;
  height: 14px;
}

html.theme-dense .sidebar-link .link-label {
  font-size: 0.8125rem;
}

/* Collapsed sidebar - Extra compact */
html.theme-dense .app-sidebar.collapsed .sidebar-link {
  padding: 0.25rem;
  min-height: 28px;
}

html.theme-dense .app-sidebar.collapsed .sidebar-link .link-icon {
  font-size: 0.875rem;
}

/* Domain group highlighting - White border for dense theme */
html.theme-dense .sidebar-group[data-group^="domain:"][open] .sidebar-group-header {
  border-left: 2px solid rgba(255, 255, 255, 0.5);
}

/* Custom and Activities groups - Ensure white text on blue background */
html.theme-dense .sidebar-group[data-group="custom"] .sidebar-group-header,
html.theme-dense .sidebar-group[data-group="activities"] .sidebar-group-header {
  color: rgba(255, 255, 255, 0.85);
}

html.theme-dense .sidebar-group[data-group="custom"] .sidebar-group-header:hover,
html.theme-dense .sidebar-group[data-group="activities"] .sidebar-group-header:hover {
  color: #ffffff;
}

html.theme-dense .sidebar-group[data-group="custom"] .sidebar-link,
html.theme-dense .sidebar-group[data-group="activities"] .sidebar-link {
  color: rgba(255, 255, 255, 0.85);
}

html.theme-dense .sidebar-group[data-group="custom"] .sidebar-link:hover,
html.theme-dense .sidebar-group[data-group="activities"] .sidebar-link:hover {
  color: #ffffff;
}

html.theme-dense .sidebar-group[data-group="custom"] .sidebar-link[aria-current="page"],
html.theme-dense .sidebar-group[data-group="activities"] .sidebar-link[aria-current="page"] {
  color: #ffffff;
}

/* Active link hover - ensure white text for all groups */
html.theme-dense .sidebar-link[aria-current="page"]:hover {
  color: #ffffff;
}

/* ============================================================================
   DENSE THEME - MAIN CONTENT AREA
   ============================================================================ */

html.theme-dense .app-main {
  padding: 0.5rem 0.75rem;
  background: var(--main-bg);
}

html.theme-dense .app-main.container-fluid {
  padding-left: 0.75rem;
  padding-right: 0.75rem;
}

/* ============================================================================
   DENSE THEME - MODALS & DROPDOWNS
   ============================================================================ */

/* Search modal - Compact */
html.theme-dense #search-modal article {
  max-width: 600px;
  padding: 0.75rem;
}

html.theme-dense #search-modal header {
  padding: 0.5rem 0.75rem;
  margin-bottom: 0.5rem;
}

html.theme-dense #search-modal input {
  font-size: 0.8125rem;
  padding: 0.25rem 0.5rem;
}

/* Notification dropdown - Compact */
html.theme-dense .notification-dropdown ul {
  max-width: 320px;
  padding: 0.375rem;
}

html.theme-dense .notification-dropdown li {
  padding: 0.25rem 0.5rem;
  font-size: 0.8125rem;
}

html.theme-dense .notification-dropdown-header {
  padding: 0.25rem 0.5rem;
  font-size: 0.8125rem;
}

html.theme-dense .notification-badge {
  font-size: 0.625rem;
  min-width: 14px;
  height: 14px;
  padding: 0 0.25rem;
}

/* User dropdown - Compact */
html.theme-dense .dropdown ul {
  padding: 0.25rem 0;
  min-width: 180px;
}

html.theme-dense .dropdown li a {
  padding: 0.25rem 0.5rem;
  font-size: 0.8125rem;
}

html.theme-dense .dropdown li small {
  font-size: 0.75rem;
  padding: 0.125rem 0.5rem;
}

/* ============================================================================
   DENSE THEME - FORM LAYOUTS
   ============================================================================ */

html.theme-dense .form-container {
  margin: 1rem auto;
}

html.theme-dense .form-header {
  margin-bottom: 1rem;
}

html.theme-dense .form-header h1,
html.theme-dense .form-header h2 {
  font-size: 1.25rem;
}

html.theme-dense .form-header p {
  font-size: 0.8125rem;
  margin-top: 0.25rem;
}

html.theme-dense .form-section {
  margin-bottom: 1rem;
}

html.theme-dense .form-section-title {
  font-size: 0.875rem;
  margin-bottom: 0.5rem;
  padding-bottom: 0.25rem;
}

html.theme-dense .field-group {
  margin-bottom: 0.75rem;
}

html.theme-dense .field-row {
  gap: 0.5rem;
}

html.theme-dense .help-text,
html.theme-dense .field-error {
  font-size: 0.6875rem;
  margin-top: 0.125rem;
}

html.theme-dense .form-actions {
  margin-top: 1rem;
  padding-top: 0.75rem;
  gap: 0.375rem;
}

html.theme-dense .form-actions button {
  min-width: 100px;
}

/* ============================================================================
   DENSE THEME - LIST & TABLE VIEWS
   ============================================================================ */

html.theme-dense .list-container,
html.theme-dense .detail-container {
  margin: 0;
}

html.theme-dense .list-header,
html.theme-dense .detail-header {
  margin-bottom: 0.75rem;
  gap: 0.5rem;
}

html.theme-dense .list-header h1,
html.theme-dense .detail-header h1 {
  font-size: 1.25rem;
}

html.theme-dense .list-actions,
html.theme-dense .detail-actions {
  gap: 0.25rem;
}

html.theme-dense .list-filters {
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

html.theme-dense .search-box {
  max-width: 300px;
}

/* Badge styles - Compact */
html.theme-dense .badge,
html.theme-dense [data-badge] {
  padding: 0.125rem 0.375rem;
  font-size: 0.6875rem;
  border-radius: 0.125rem;
}

/* Status dots - Smaller */
html.theme-dense .status-dot {
  width: 6px;
  height: 6px;
}

/* ============================================================================
   DENSE THEME - RESPONSIVE ADJUSTMENTS
   Maintain usability on mobile while keeping density on desktop
   ============================================================================ */

@media (max-width: 768px) {
  /* Slightly relax density on mobile for touch targets */
  html.theme-dense body {
    font-size: 14px;
  }

  html.theme-dense button,
  html.theme-dense [role="button"] {
    padding: 0.375rem 0.625rem;
    font-size: 0.875rem;
    min-height: 44px; /* Touch target size */
  }

  html.theme-dense input,
  html.theme-dense select,
  html.theme-dense textarea {
    padding: 0.375rem 0.625rem;
    font-size: 0.875rem;
    min-height: 44px; /* Touch target size for accessibility */
  }

  html.theme-dense .sidebar-link {
    min-height: 44px; /* Touch target size */
    padding: 0.375rem 0.625rem;
  }
}

/* ============================================================================
   DENSE THEME - ACCESSIBILITY OVERRIDES
   Ensure minimum contrast and readability
   ============================================================================ */

/* Ensure white text on blue sidebar meets WCAG AA */
html.theme-dense .sidebar-link {
  /* White text (rgba(255,255,255,0.85)) on #16425b = 8.5:1 contrast ratio (AAA) */
}

html.theme-dense .sidebar-link:hover,
html.theme-dense .sidebar-link[aria-current="page"] {
  /* White text on #1a5a8a or #2196f3 = 4.5:1+ contrast ratio (AA) */
}

/* Maintain focus indicators */
html.theme-dense *:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Spreadsheet preview styles are in components.css */

/* ============================================================================
   ASSET TRACKING UI - Courier-style tracking interface
   ============================================================================ */

.tracking-container {
  background: var(--pico-card-background-color, #fff);
  border-radius: var(--pico-border-radius, 0.25rem);
  padding: 1.5rem;
  margin-top: 1.5rem;
  border: 1px solid var(--pico-card-border-color, #dee2e6);
}

.tracking-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.tracking-title {
  margin: 0;
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--pico-color, #212529);
}

/* Progress Stepper */
.tracking-stepper {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1.5rem;
  padding: 1rem 0;
  position: relative;
}

.tracking-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex: 1;
  position: relative;
  z-index: 1;
}

.step-connector {
  position: absolute;
  top: 18px;
  right: 50%;
  width: 100%;
  height: 3px;
  background: var(--pico-muted-border-color, #dee2e6);
  z-index: 0;
}

.step-connector.completed {
  background: var(--pico-primary-background, #0d6efd);
}

.step-connector.hidden {
  display: none;
}

.step-indicator {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--pico-muted-border-color, #dee2e6);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--pico-muted-color, #6c757d);
  margin-bottom: 0.5rem;
  position: relative;
  z-index: 2;
  transition: all 0.2s ease;
}

.tracking-step.completed .step-indicator {
  background: var(--pico-primary-background, #0d6efd);
  color: white;
}

.tracking-step.current .step-indicator {
  background: var(--pico-primary-background, #0d6efd);
  color: white;
  box-shadow: 0 0 0 4px rgba(13, 110, 253, 0.25);
}

.step-icon {
  width: 18px;
  height: 18px;
}

.step-label {
  font-size: 0.75rem;
  color: var(--pico-muted-color, #6c757d);
  text-align: center;
  font-weight: 500;
}

.tracking-step.completed .step-label,
.tracking-step.current .step-label {
  color: var(--pico-color, #212529);
}

/* Status Summary */
.tracking-status-summary {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  padding: 1rem;
  background: var(--pico-card-sectioning-background-color, #f8f9fa);
  border-radius: var(--pico-border-radius, 0.25rem);
  margin-bottom: 1.5rem;
}

.status-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.status-label {
  font-size: 0.75rem;
  color: var(--pico-muted-color, #6c757d);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.status-value {
  font-weight: 500;
  color: var(--pico-color, #212529);
}

/* Tracking Events */
.tracking-events {
  margin-top: 1rem;
}

.tracking-events-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--pico-color, #212529);
}

.tracking-empty {
  text-align: center;
  padding: 2rem;
  color: var(--pico-muted-color, #6c757d);
}

.tracking-empty p {
  margin-bottom: 0.5rem;
}

.tracking-table-container {
  overflow-x: auto;
}

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

.tracking-table thead {
  background: var(--pico-card-sectioning-background-color, #f8f9fa);
}

.tracking-table th {
  text-align: left;
  padding: 0.75rem;
  font-weight: 600;
  color: var(--pico-color, #212529);
  border-bottom: 2px solid var(--pico-muted-border-color, #dee2e6);
  white-space: nowrap;
}

.tracking-table td {
  padding: 0.75rem;
  border-bottom: 1px solid var(--pico-muted-border-color, #dee2e6);
  vertical-align: top;
}

.tracking-row:hover {
  background: var(--pico-card-sectioning-background-color, #f8f9fa);
}

/* Column widths */
.col-date {
  width: 140px;
}

.col-activity {
  min-width: 250px;
}

.col-from,
.col-to {
  min-width: 150px;
}

/* Date column styling */
.event-date {
  display: block;
  font-weight: 500;
  color: var(--pico-color, #212529);
}

.event-time {
  display: block;
  font-size: 0.75rem;
  color: var(--pico-muted-color, #6c757d);
}

/* Activity column styling */
.activity-wrapper {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
}

.activity-icon {
  width: 32px;
  height: 32px;
  min-width: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--pico-primary-background, #0d6efd);
  color: white;
}

.activity-icon svg {
  width: 16px;
  height: 16px;
}

/* Activity type specific colors */
.activity-icon.registered {
  background: #198754; /* green */
}

.activity-icon.transfer_initiated,
.activity-icon.in_transit {
  background: #fd7e14; /* orange */
}

.activity-icon.received {
  background: #0d6efd; /* blue */
}

.activity-icon.scanned {
  background: #6f42c1; /* purple */
}

.activity-icon.maintenance_started,
.activity-icon.maintenance_completed {
  background: #6c757d; /* gray */
}

.activity-icon.calibration_started,
.activity-icon.calibration_completed {
  background: #20c997; /* teal */
}

.activity-icon.condition_updated {
  background: #ffc107; /* yellow */
  color: #212529;
}

.activity-icon.decommissioned {
  background: #dc3545; /* red */
}

.activity-details {
  display: flex;
  flex-direction: column;
  gap: 0.125rem;
}

.activity-name {
  font-weight: 500;
  color: var(--pico-color, #212529);
}

.activity-notes {
  font-size: 0.75rem;
  color: var(--pico-muted-color, #6c757d);
  font-style: italic;
}

.activity-by {
  font-size: 0.75rem;
  color: var(--pico-muted-color, #6c757d);
}

/* Location column styling */
.location-name {
  display: block;
  font-weight: 500;
  color: var(--pico-color, #212529);
}

.custodian-name {
  display: block;
  font-size: 0.75rem;
  color: var(--pico-muted-color, #6c757d);
}

.location-empty {
  color: var(--pico-muted-color, #6c757d);
}

/* Loading state */
.tracking-loading {
  text-align: center;
  padding: 2rem;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .tracking-stepper {
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  .tracking-step {
    flex: 0 0 auto;
    min-width: 60px;
  }

  .step-connector {
    display: none;
  }

  .tracking-status-summary {
    flex-direction: column;
    gap: 0.75rem;
  }

  .tracking-table th,
  .tracking-table td {
    padding: 0.5rem;
  }

  .col-from,
  .col-to {
    display: none;
  }

  .activity-wrapper {
    flex-direction: column;
    gap: 0.5rem;
  }
}