/* ==========================================================================
   PILOTAGE COMMERCIAL - CSS Principal
   ========================================================================== */

/* Google Font - Quicksand pour le logo */
@import url('https://fonts.googleapis.com/css2?family=Quicksand:wght@600;700&display=swap');

/* --------------------------------------------------------------------------
   Variables CSS
   -------------------------------------------------------------------------- */
:root {
  /* Couleurs principales (style Apple-like) - Mode clair */
  --color-text: #1d1d1f;
  --color-text-secondary: #86868b;
  --color-background: #ffffff;
  --color-surface: #f5f5f7;
  --color-border: #d2d2d7;
  --color-accent: #0071e3;
  --color-accent-hover: #0077ed;
  --color-success: #34c759;
  --color-warning: #ff9500;
  --color-danger: #ff3b30;

  /* Couleurs GA4 (pour la simulation) */
  --ga-blue: #1a73e8;
  --ga-blue-light: #e8f0fe;
  --ga-green: #34a853;
  --ga-yellow: #fbbc04;
  --ga-red: #ea4335;
  --ga-sidebar-bg: #ffffff;
  --ga-sidebar-hover: #f1f3f4;
  --ga-sidebar-active: #e8f0fe;
  --ga-content-bg: #f8f9fa;
  --ga-card-bg: #ffffff;
  --ga-border: #dadce0;
  --ga-text-primary: #202124;
  --ga-text-secondary: #5f6368;
  --ga-chart-blue: #4285f4;
  --ga-chart-green: #34a853;
  --ga-chart-orange: #fa7b17;
  --ga-chart-purple: #a142f4;
}

/* Mode sombre */
[data-theme="dark"] {
  --color-text: #f5f5f7;
  --color-text-secondary: #a1a1a6;
  --color-background: #1d1d1f;
  --color-surface: #2d2d2f;
  --color-border: #424245;
  --color-accent: #2997ff;
  --color-accent-hover: #0077ed;

  --ga-blue: #8ab4f8;
  --ga-blue-light: #1e3a5f;
  --ga-sidebar-bg: #1d1d1f;
  --ga-sidebar-hover: #2d2d2f;
  --ga-sidebar-active: #1e3a5f;
  --ga-content-bg: #121212;
  --ga-card-bg: #1d1d1f;
  --ga-border: #3c3c3e;
  --ga-text-primary: #e8eaed;
  --ga-text-secondary: #9aa0a6;
}

:root {
  /* Typographie */
  --font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  --font-family-ga: 'Google Sans', Roboto, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;

  /* Espacements */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;

  /* Bordures */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* Ombres */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;

  /* Layout */
  --header-height: 64px;
  --sidebar-width: 260px;
  --sidebar-collapsed-width: 64px;
  --max-content-width: 1200px;
}

/* --------------------------------------------------------------------------
   Reset & Base
   -------------------------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-background);
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-accent-hover);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

button {
  font-family: inherit;
  font-size: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

ul, ol {
  list-style: none;
}

/* --------------------------------------------------------------------------
   Bouton de thème (Mode sombre)
   -------------------------------------------------------------------------- */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--color-surface);
  border-radius: var(--radius-full);
  color: var(--color-text);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.theme-toggle:hover {
  background: var(--color-border);
}

.theme-toggle svg {
  width: 20px;
  height: 20px;
}

.theme-toggle .icon-sun {
  display: none;
}

.theme-toggle .icon-moon {
  display: block;
}

[data-theme="dark"] .theme-toggle .icon-sun {
  display: block;
}

[data-theme="dark"] .theme-toggle .icon-moon {
  display: none;
}

/* --------------------------------------------------------------------------
   Typographie
   -------------------------------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  color: var(--color-text);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

p {
  margin-bottom: var(--spacing-md);
}

.text-secondary {
  color: var(--color-text-secondary);
}

.text-small {
  font-size: var(--font-size-sm);
}

/* --------------------------------------------------------------------------
   Layout - Site principal
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  height: var(--header-height);
}

[data-theme="dark"] .site-header {
  background: rgba(29, 29, 31, 0.85);
  border-bottom-color: var(--color-border);
}

.site-header-inner {
  max-width: var(--max-content-width);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-logo {
  font-family: 'Quicksand', sans-serif;
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--color-accent) 0%, #6366f1 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.site-nav {
  display: flex;
  gap: var(--spacing-lg);
}

.site-nav a {
  color: var(--color-text);
  font-size: var(--font-size-sm);
  font-weight: 500;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast);
}

.site-nav a:hover {
  background-color: var(--color-surface);
  color: var(--color-text);
}

.site-nav a.active {
  background-color: var(--color-accent);
  color: white;
}

/* Bouton menu mobile - caché par défaut */
.btn-mobile-menu {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  color: var(--color-text);
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast);
}

.btn-mobile-menu:hover {
  background-color: var(--color-surface);
}

.main-content {
  min-height: calc(100vh - var(--header-height));
}

.container {
  max-width: var(--max-content-width);
  margin: 0 auto;
  padding: var(--spacing-xl) var(--spacing-lg);
}

.site-footer {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-2xl) var(--spacing-lg);
  text-align: center;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

/* --------------------------------------------------------------------------
   Composants - Cartes
   -------------------------------------------------------------------------- */
.card {
  background: var(--color-background);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  padding: var(--spacing-lg);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

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

.card-link {
  display: block;
  color: inherit;
}

.card-link:hover {
  color: inherit;
}

.card-icon {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-md);
}

.card-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.card-description {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
}

/* --------------------------------------------------------------------------
   Composants - Boutons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-size-sm);
  font-weight: 500;
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

.btn-primary {
  background-color: var(--color-accent);
  color: white;
}

.btn-primary:hover {
  background-color: var(--color-accent-hover);
  color: white;
}

.btn-secondary {
  background-color: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

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

.btn-lg {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-base);
}

/* --------------------------------------------------------------------------
   Hero Section
   -------------------------------------------------------------------------- */
.hero {
  text-align: center;
  padding: var(--spacing-3xl) var(--spacing-lg);
  background: linear-gradient(180deg, var(--color-surface) 0%, var(--color-background) 100%);
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: var(--font-size-xl);
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto var(--spacing-xl);
}

/* --------------------------------------------------------------------------
   GA4 Simulation - Layout
   -------------------------------------------------------------------------- */
.ga4-app {
  display: flex;
  min-height: 100vh;
  font-family: var(--font-family-ga);
  background-color: var(--ga-content-bg);
}

.ga4-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 56px;
  background: var(--ga-sidebar-bg);
  border-bottom: 1px solid var(--ga-border);
  display: flex;
  align-items: center;
  padding: 0 var(--spacing-md);
  z-index: 100;
}

.ga4-header-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-lg);
  font-weight: 500;
  color: var(--ga-text-secondary);
}

.ga4-header-logo img {
  height: 24px;
}

.ga4-header-property {
  margin-left: var(--spacing-lg);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--ga-text-primary);
}

.ga4-header-date {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--ga-sidebar-hover);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  color: var(--ga-text-primary);
  cursor: pointer;
}

.ga4-sidebar {
  position: fixed;
  top: 56px;
  left: 0;
  bottom: 0;
  width: var(--sidebar-width);
  background: var(--ga-sidebar-bg);
  border-right: 1px solid var(--ga-border);
  overflow-y: auto;
  padding: var(--spacing-md) 0;
  z-index: 90;
}

.ga4-main {
  margin-left: var(--sidebar-width);
  margin-top: 56px;
  flex: 1;
  padding: var(--spacing-lg);
  min-height: calc(100vh - 56px);
}

/* --------------------------------------------------------------------------
   GA4 Simulation - Navigation
   -------------------------------------------------------------------------- */
.ga4-nav-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  color: var(--ga-text-secondary);
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.ga4-nav-item:hover {
  background-color: var(--ga-sidebar-hover);
}

.ga4-nav-item.active {
  background-color: var(--ga-sidebar-active);
  color: var(--ga-blue);
}

.ga4-nav-item.disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.ga4-nav-item-icon {
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ga4-nav-submenu {
  padding-left: var(--spacing-xl);
}

.ga4-nav-submenu .ga4-nav-item {
  padding-left: var(--spacing-2xl);
  font-size: var(--font-size-xs);
}

.ga4-nav-section {
  margin-top: var(--spacing-md);
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-size-xs);
  font-weight: 500;
  color: var(--ga-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* --------------------------------------------------------------------------
   GA4 Simulation - Cartes KPI
   -------------------------------------------------------------------------- */
.ga4-kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.ga4-kpi-card {
  background: var(--ga-card-bg);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  border: 1px solid var(--ga-border);
}

.ga4-kpi-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-sm);
}

.ga4-kpi-label {
  font-size: var(--font-size-xs);
  color: var(--ga-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.ga4-kpi-value {
  font-size: var(--font-size-2xl);
  font-weight: 500;
  color: var(--ga-text-primary);
}

.ga4-kpi-trend {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-xs);
  font-size: var(--font-size-xs);
  font-weight: 500;
}

.ga4-kpi-trend.positive {
  color: var(--ga-green);
}

.ga4-kpi-trend.negative {
  color: var(--ga-red);
}

/* --------------------------------------------------------------------------
   GA4 Simulation - Tableaux
   -------------------------------------------------------------------------- */
.ga4-table-container {
  background: var(--ga-card-bg);
  border-radius: var(--radius-md);
  border: 1px solid var(--ga-border);
  overflow: hidden;
}

.ga4-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
}

.ga4-table th {
  background: var(--ga-sidebar-hover);
  padding: var(--spacing-sm) var(--spacing-md);
  text-align: left;
  font-weight: 500;
  color: var(--ga-text-secondary);
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--ga-border);
}

.ga4-table td {
  padding: var(--spacing-sm) var(--spacing-md);
  border-bottom: 1px solid var(--ga-border);
  color: var(--ga-text-primary);
}

.ga4-table tr:last-child td {
  border-bottom: none;
}

.ga4-table tr:hover td {
  background-color: var(--ga-sidebar-hover);
}

.ga4-table .number {
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.ga4-table .optional-data {
  opacity: 0.4;
}

.simplified-view .ga4-table .optional-data {
  display: none;
}

/* --------------------------------------------------------------------------
   GA4 Simulation - Infobulles pédagogiques
   -------------------------------------------------------------------------- */
.tooltip-trigger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  font-size: 10px;
  color: var(--ga-text-secondary);
  background: var(--ga-sidebar-hover);
  border-radius: var(--radius-full);
  cursor: help;
  transition: background-color var(--transition-fast);
}

.tooltip-trigger:hover {
  background: var(--ga-blue-light);
  color: var(--ga-blue);
}

.edu-tooltip {
  position: fixed;
  background: white;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl);
  padding: var(--spacing-md);
  max-width: 320px;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all var(--transition-base);
}

.edu-tooltip.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.edu-tooltip-close {
  position: absolute;
  top: var(--spacing-sm);
  right: var(--spacing-sm);
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ga-text-secondary);
  border-radius: var(--radius-full);
}

.edu-tooltip-close:hover {
  background: var(--ga-sidebar-hover);
}

.edu-tooltip-title {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--ga-blue);
  margin-bottom: var(--spacing-sm);
  padding-right: var(--spacing-lg);
}

.edu-tooltip-definition {
  font-size: var(--font-size-sm);
  color: var(--ga-text-primary);
  margin-bottom: var(--spacing-md);
  line-height: 1.5;
}

.edu-tooltip-example {
  background: var(--ga-blue-light);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  margin-bottom: var(--spacing-sm);
  line-height: 1.5;
}

.edu-tooltip-utility {
  font-size: var(--font-size-xs);
  color: var(--ga-text-secondary);
  line-height: 1.5;
}

/* Mode sombre pour les tooltips */
[data-theme="dark"] .edu-tooltip {
  background: var(--ga-card-bg);
  border: 1px solid var(--ga-border);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
}

[data-theme="dark"] .edu-tooltip-title {
  color: var(--ga-blue);
}

[data-theme="dark"] .edu-tooltip-definition {
  color: var(--ga-text-primary);
}

[data-theme="dark"] .edu-tooltip-example {
  background: var(--ga-blue-light);
  color: var(--ga-text-primary);
}

[data-theme="dark"] .edu-tooltip-utility {
  color: var(--ga-text-secondary);
}

[data-theme="dark"] .edu-tooltip-close {
  color: var(--ga-text-secondary);
}

[data-theme="dark"] .edu-tooltip-close:hover {
  background: var(--ga-sidebar-hover);
  color: var(--ga-text-primary);
}

/* --------------------------------------------------------------------------
   GA4 Simulation - Toggle vue simplifiée
   -------------------------------------------------------------------------- */
.view-toggle {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
  font-size: var(--font-size-sm);
  color: var(--ga-text-secondary);
}

.switch {
  position: relative;
  width: 40px;
  height: 20px;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.switch .slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--ga-border);
  border-radius: var(--radius-full);
  transition: background-color var(--transition-fast);
}

.switch .slider::before {
  position: absolute;
  content: "";
  height: 16px;
  width: 16px;
  left: 2px;
  bottom: 2px;
  background-color: white;
  border-radius: var(--radius-full);
  transition: transform var(--transition-fast);
}

.switch input:checked + .slider {
  background-color: var(--ga-blue);
}

.switch input:checked + .slider::before {
  transform: translateX(20px);
}

/* --------------------------------------------------------------------------
   GA4 Simulation - Graphiques
   -------------------------------------------------------------------------- */
.ga4-chart-container {
  background: var(--ga-card-bg);
  border-radius: var(--radius-md);
  border: 1px solid var(--ga-border);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.ga4-chart-title {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--ga-text-primary);
  margin-bottom: var(--spacing-md);
}

/* --------------------------------------------------------------------------
   GA4 Simulation - Entonnoir
   -------------------------------------------------------------------------- */
.ga4-funnel {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  padding: var(--spacing-md);
}

.ga4-funnel-step {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.ga4-funnel-bar {
  height: 40px;
  background: var(--ga-blue);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  padding: 0 var(--spacing-md);
  color: white;
  font-size: var(--font-size-sm);
  font-weight: 500;
  min-width: 100px;
  transition: width var(--transition-slow);
}

.ga4-funnel-info {
  flex: 1;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.ga4-funnel-label {
  font-size: var(--font-size-sm);
  color: var(--ga-text-primary);
}

.ga4-funnel-value {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--ga-text-primary);
}

.ga4-funnel-rate {
  font-size: var(--font-size-xs);
  color: var(--ga-text-secondary);
}

.ga4-funnel-arrow {
  text-align: center;
  color: var(--ga-text-secondary);
  font-size: var(--font-size-xs);
  padding: var(--spacing-xs) 0;
}

/* --------------------------------------------------------------------------
   GA4 Simulation - Section titre
   -------------------------------------------------------------------------- */
.ga4-section-header {
  margin-bottom: var(--spacing-lg);
}

.ga4-section-title {
  font-size: var(--font-size-xl);
  font-weight: 500;
  color: var(--ga-text-primary);
  margin-bottom: var(--spacing-xs);
}

.ga4-section-subtitle {
  font-size: var(--font-size-sm);
  color: var(--ga-text-secondary);
}

/* --------------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .ga4-sidebar {
    width: var(--sidebar-collapsed-width);
  }

  .ga4-sidebar .ga4-nav-item span:not(.ga4-nav-item-icon) {
    display: none;
  }

  .ga4-main {
    margin-left: var(--sidebar-collapsed-width);
  }
}

@media (max-width: 768px) {
  /* Afficher le bouton hamburger */
  .btn-mobile-menu {
    display: flex;
  }

  /* Navigation mobile */
  .site-nav {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-background);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-md);
    flex-direction: column;
    gap: var(--spacing-xs);
    box-shadow: var(--shadow-lg);
  }

  .site-nav.open {
    display: flex;
  }

  .site-nav a {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
  }

  .hero {
    padding: var(--spacing-2xl) var(--spacing-md);
  }

  .hero-title {
    font-size: 2rem;
  }

  .container {
    padding: var(--spacing-lg) var(--spacing-md);
  }

  .ga4-sidebar {
    transform: translateX(-100%);
    width: var(--sidebar-width);
    transition: transform var(--transition-base);
  }

  .ga4-sidebar.open {
    transform: translateX(0);
  }

  .ga4-main {
    margin-left: 0;
  }

  .ga4-kpi-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .ga4-table {
    font-size: var(--font-size-xs);
  }

  .ga4-table th,
  .ga4-table td {
    padding: var(--spacing-xs) var(--spacing-sm);
  }
}

@media (max-width: 480px) {
  .ga4-kpi-grid {
    grid-template-columns: 1fr;
  }
}

/* --------------------------------------------------------------------------
   Utilitaires
   -------------------------------------------------------------------------- */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.text-center { text-align: center; }
.text-right { text-align: right; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }