/* ============================================
   DESIGN SYSTEM - GESTION IMMOBILIÈRE PATTERONI
   ============================================ */

/* === VARIABLES CSS === */
:root {
  /* Couleurs principales */
  --color-primary: #4a90e2;
  --color-primary-dark: #357abd;
  --color-secondary: #6c757d;
  --color-success: #28a745;
  --color-danger: #dc3545;
  --color-warning: #ffc107;
  --color-info: #17a2b8;

  /* Couleurs neutres */
  --color-white: #ffffff;
  --color-black: #333333;
  --color-gray-dark: #6c757d;
  --color-gray: #adb5bd;
  --color-gray-light: #dee2e6;
  --color-background: #e8eaed;
  /* MODIFIÉ : plus sombre qu'avant */

  /* Espacements */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;

  /* Typographie */
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
  --font-size-small: 14px;
  --font-size-base: 16px;
  --font-size-h1: 32px;
  --font-size-h2: 24px;
  --font-size-h3: 20px;

  /* Bordures */
  --border-radius-sm: 4px;
  --border-radius-md: 8px;
  --border-radius-lg: 12px;

  /* Ombres */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
}

/* === RESET ET BASE === */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-black);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* === CONTAINER === */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

/* === HEADER UNIFIÉ === */
.page-header {
  background: var(--color-white);
  border-bottom: 1px solid var(--color-gray-light);
  padding: var(--spacing-lg) 0;
  margin-bottom: var(--spacing-xl);
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.page-title {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin: 0;
  color: var(--color-primary);
  font-size: var(--font-size-h2);
}

.page-title span:first-child {
  font-size: 36px;
  /* Icône agrandie */
}

.user-info {
  text-align: right;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

/* === NAVIGATION HEADER === */
.header-left {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.back-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--color-background);
  border: 1px solid var(--color-gray-light);
  border-radius: var(--border-radius-md);
  text-decoration: none;
  color: var(--color-black);
  transition: all 0.2s ease;
  cursor: pointer;
}

.back-btn:hover {
  background: var(--color-gray-light);
}

.page-title {
  cursor: pointer;
  transition: opacity 0.2s ease;
}

.page-title:hover {
  opacity: 0.8;
}

/* === BOUTONS === */
.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-size-base);
  font-weight: 600;
  text-align: center;
  text-decoration: none;
  border: none;
  border-radius: var(--border-radius-md);
  cursor: pointer;
  transition: all 0.2s ease;
}

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

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
  background-color: #5a6268;
  transform: translateY(-2px);
}

.btn-small {
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: var(--font-size-small);
}

/* === ACCORDÉONS === */
.accordion {
  margin-bottom: var(--spacing-md);
}

.accordion-header {
  background: var(--color-white);
  border: 1px solid var(--color-gray-light);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-md) var(--spacing-lg);
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.accordion-header:hover {
  background: var(--color-background);
  box-shadow: var(--shadow-sm);
}

.accordion-header.active {
  background: var(--color-white);
  border-bottom-left-radius: 0;
  border-bottom-right-radius: 0;
}

.accordion-content {
  display: none;
  border: 1px solid var(--color-gray-light);
  border-top: none;
  border-bottom-left-radius: var(--border-radius-lg);
  border-bottom-right-radius: var(--border-radius-lg);
  background: var(--color-white);
  padding: 0;
}

.accordion-content.active {
  display: block;
}

.accordion-icon {
  margin-left: var(--spacing-md);
  transition: transform 0.2s ease;
  font-size: 20px;
}

.accordion-header.active .accordion-icon {
  transform: rotate(180deg);
}

/* === UTILITAIRES === */
.text-bold {
  font-weight: 700;
}

.hidden {
  display: none !important;
}

.empty-state {
  text-align: center;
  padding: var(--spacing-xl);
  color: var(--color-gray-dark);
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
  .container {
    padding: 0 var(--spacing-md);
  }

  .header-content {
    flex-direction: column;
    align-items: flex-start;
  }

  .user-info {
    text-align: left;
    width: 100%;
  }

  .page-title span:first-child {
    font-size: 28px;
  }
}