/* ==========================================================================
   LE CHENE VERT - PORTAIL INSTITUTIONNEL (LOI 1901)
   Architecture CSS Responsive & Haute Performance
   Palette : Royal Blue (#002366), Deep Gold (#FFD700), Sombre (#1A202C)
   ========================================================================== */

:root {
  --color-primary: #002366;
  --color-primary-dark: #001845;
  --color-primary-light: #0d3b8e;
  --color-accent: #FFD700;
  --color-accent-hover: #e6c200;
  --color-text-dark: #1E293B;
  --color-text-muted: #475569;
  --color-text-light: #64748B;
  --color-bg-light: #F8FAFC;
  --color-bg-alt: #F1F5F9;
  --color-bg-card: #FFFFFF;
  --color-footer-bg: #1A202C;
  --color-border: #E2E8F0;
  --color-border-dark: #334155;
  --font-heading: "Playfair Display", Georgia, "Times New Roman", serif;
  --font-body: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
  --shadow-sm: 0 1px 3px rgba(0, 35, 102, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 35, 102, 0.1);
  --shadow-lg: 0 10px 25px rgba(0, 35, 102, 0.12);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --max-width: 1240px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--color-text-dark);
  background-color: var(--color-bg-light);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--color-primary);
  line-height: 1.25;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

h1 { font-size: 2.35rem; }
h2 { font-size: 1.85rem; }
h3 { font-size: 1.35rem; }
h4 { font-size: 1.15rem; }

p {
  margin-bottom: 1.15rem;
  color: var(--color-text-muted);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

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

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

.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

/* ==========================================================================
   HEADER SYSTEM (Row 1 Utility Strip + Row 2 Main Nav + Mega Menu)
   ========================================================================== */

/* Top Utility Strip */
.top-utility-strip {
  background-color: #F4F6F9;
  color: #333333;
  height: 42px;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.84rem;
  display: flex;
  align-items: center;
}

.top-utility-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.utility-rna-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  color: #1E293B;
}

.utility-rna-badge span.pill {
  background-color: #E2E8F0;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.76rem;
  color: var(--color-primary);
  font-family: monospace;
}

.utility-tools {
  display: flex;
  align-items: center;
  gap: 16px;
}

.utility-search-box {
  display: flex;
  align-items: center;
  background: #FFFFFF;
  border: 1px solid #CBD5E1;
  border-radius: 4px;
  padding: 3px 8px;
  font-size: 0.8rem;
}

.utility-search-box input {
  border: none;
  outline: none;
  font-size: 0.8rem;
  width: 140px;
  background: transparent;
}

.utility-search-box button {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  padding: 2px;
}

.utility-lang-selector {
  display: flex;
  gap: 6px;
  align-items: center;
  font-weight: 600;
  font-size: 0.78rem;
}

.utility-lang-selector span.active {
  color: var(--color-primary);
  text-decoration: underline;
}

/* Main Navigation Bar */
.main-header {
  background-color: #FFFFFF;
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 2px solid var(--color-primary);
}

.main-nav-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 0;
}

.brand-identity {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
}

.brand-emblem {
  width: 44px;
  height: 44px;
  background-color: var(--color-primary);
  color: var(--color-accent);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.25rem;
  border: 2px solid var(--color-accent);
  box-shadow: var(--shadow-sm);
  flex-shrink: 0;
}

.brand-text h1 {
  font-size: 1.35rem;
  margin: 0;
  color: var(--color-primary);
  letter-spacing: 0.5px;
  line-height: 1.1;
}

.brand-text p {
  font-size: 0.76rem;
  margin: 0;
  color: var(--color-text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Desktop Navigation & Mega Menu */
.nav-menu {
  display: flex;
  list-style: none;
  align-items: center;
  gap: 4px;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  color: var(--color-text-dark);
  font-weight: 600;
  font-size: 0.92rem;
  border-radius: var(--radius-sm);
  min-height: 44px;
  transition: all 0.2s ease;
}

.nav-link:hover, .nav-item:hover > .nav-link {
  color: var(--color-primary);
  background-color: var(--color-bg-alt);
}

.nav-link.active {
  color: var(--color-primary);
  border-bottom: 3px solid var(--color-accent);
}

/* Mega Menu Dropdown */
.mega-dropdown {
  position: absolute;
  top: 100%;
  left: -20px;
  width: 290px;
  background-color: #FFFFFF;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
  border-top: 3px solid var(--color-primary);
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  padding: 12px 8px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 1100;
}

.nav-item:hover .mega-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.mega-dropdown a {
  display: block;
  padding: 10px 14px;
  color: var(--color-text-dark);
  font-size: 0.88rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: all 0.15s ease;
  min-height: 44px;
  display: flex;
  align-items: center;
}

.mega-dropdown a:hover {
  background-color: var(--color-bg-alt);
  color: var(--color-primary);
  padding-left: 18px;
  border-left: 3px solid var(--color-accent);
}

/* Header Contact CTA Button */
.header-cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-primary);
  color: #FFFFFF !important;
  font-weight: 700;
  font-size: 0.88rem;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  border: 2px solid var(--color-accent);
  box-shadow: var(--shadow-sm);
  min-height: 44px;
  white-space: nowrap;
  transition: all 0.2s ease;
}

.header-cta-btn:hover {
  background-color: var(--color-primary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

/* Mobile Hamburger Toggle */
.mobile-toggle-btn {
  display: none;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  width: 44px;
  height: 44px;
  padding: 8px;
  cursor: pointer;
  flex-direction: column;
  justify-content: space-around;
  align-items: center;
}

.mobile-toggle-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-primary);
  transition: all 0.3s ease;
}

/* Mobile Nav Container */
#mobile-nav-checkbox {
  display: none;
}

/* ==========================================================================
   PAGE HERO & NONPROFIT TRANSPARENCY BANNERS
   ========================================================================== */

.hero-banner-section {
  position: relative;
  background: linear-gradient(135deg, rgba(0, 35, 102, 0.94), rgba(0, 24, 69, 0.88)), #002366;
  color: #FFFFFF;
  padding: 56px 0 48px;
  border-bottom: 4px solid var(--color-accent);
}

.hero-content {
  max-width: 860px;
}

.hero-badge-tag {
  display: inline-block;
  background-color: rgba(255, 215, 0, 0.2);
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
  padding: 4px 12px;
  border-radius: 4px;
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 14px;
}

.hero-title {
  color: #FFFFFF;
  font-size: 2.5rem;
  line-height: 1.2;
  margin-bottom: 16px;
}

.hero-summary-statement {
  font-size: 1.15rem;
  line-height: 1.6;
  color: #E2E8F0;
  margin-bottom: 20px;
  font-weight: 400;
  border-left: 3px solid var(--color-accent);
  padding-left: 16px;
}

.hero-transparency-box {
  background-color: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin-top: 24px;
  font-size: 0.92rem;
  color: #F1F5F9;
  backdrop-filter: blur(4px);
}

.hero-transparency-box strong {
  color: var(--color-accent);
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-top: 24px;
  flex-wrap: wrap;
}

/* Internal Page Header */
.page-header-simple {
  background: linear-gradient(135deg, #002366 0%, #001845 100%);
  color: #FFFFFF;
  padding: 42px 0;
  border-bottom: 3px solid var(--color-accent);
  margin-bottom: 36px;
}

.page-header-simple h1 {
  color: #FFFFFF;
  margin-bottom: 8px;
}

.breadcrumb-trail {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: #CBD5E1;
  margin-top: 8px;
}

.breadcrumb-trail a {
  color: var(--color-accent);
}

.breadcrumb-trail a:hover {
  text-decoration: underline;
}

/* ==========================================================================
   INSTITUTIONAL TWO-COLUMN LAYOUT BLUEPRINT
   ========================================================================== */

.institutional-grid-layout {
  display: grid;
  grid-template-columns: 3fr 1fr;
  gap: 36px;
  margin: 40px 0 60px;
  align-items: start;
}

.main-content-column {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px 40px;
  box-shadow: var(--shadow-sm);
}

.side-rail-column {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* Side Rail Institutional Cards */
.side-card {
  background-color: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 22px;
  box-shadow: var(--shadow-sm);
}

.side-card.featured {
  border-top: 4px solid var(--color-primary);
}

.side-card.highlight {
  border-top: 4px solid var(--color-accent);
  background: #FFFDF0;
}

.side-card h3 {
  font-size: 1.15rem;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 8px;
  color: var(--color-primary);
}

.chiffres-cles-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.chiffre-item {
  text-align: center;
  padding: 12px;
  background-color: var(--color-bg-light);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}

.chiffre-num {
  display: block;
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--color-primary);
  font-family: var(--font-heading);
}

.chiffre-label {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.quick-facts-list {
  list-style: none;
  font-size: 0.88rem;
}

.quick-facts-list li {
  padding: 8px 0;
  border-bottom: 1px dashed var(--color-border);
  display: flex;
  justify-content: space-between;
  gap: 8px;
}

.quick-facts-list li:last-child {
  border-bottom: none;
}

.quick-facts-list strong {
  color: var(--color-primary);
}

/* ==========================================================================
   BUTTONS & NON-COMMERCIAL CTAs
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  font-weight: 700;
  font-size: 0.95rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  min-height: 44px;
  text-align: center;
  transition: all 0.2s ease;
  border: 2px solid transparent;
}

.btn-primary {
  background-color: var(--color-primary);
  color: #FFFFFF !important;
  border-color: var(--color-accent);
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.btn-accent {
  background-color: var(--color-accent);
  color: #001845 !important;
  border-color: #001845;
}

.btn-accent:hover {
  background-color: var(--color-accent-hover);
  transform: translateY(-1px);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-primary) !important;
  border-color: var(--color-primary);
}

.btn-outline:hover {
  background-color: var(--color-primary);
  color: #FFFFFF !important;
}

.btn-block {
  width: 100%;
}

/* ==========================================================================
   OPERATIONAL CATALOG & CONTENT MODULES
   ========================================================================== */

.catalog-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin: 28px 0;
}

.catalog-card {
  background: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.catalog-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: #CBD5E1;
}

.catalog-image-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background-color: #E2E8F0;
  overflow: hidden;
}

.catalog-image-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.catalog-card:hover .catalog-image-wrap img {
  transform: scale(1.03);
}

.catalog-card-body {
  padding: 22px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.live-status-tag {
  display: inline-block;
  align-self: flex-start;
  background-color: #EFF6FF;
  color: var(--color-primary);
  border: 1px solid #BFDBFE;
  padding: 3px 10px;
  border-radius: 4px;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  margin-bottom: 12px;
}

.live-status-tag.active {
  background-color: #FEF3C7;
  color: #92400E;
  border-color: #FDE68A;
}

.catalog-card-title {
  font-size: 1.25rem;
  margin-bottom: 10px;
}

.catalog-card-text {
  font-size: 0.92rem;
  margin-bottom: 18px;
  flex-grow: 1;
}

/* Institutional Tables */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  margin: 24px 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.table-institutional {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9rem;
}

.table-institutional th {
  background-color: var(--color-primary);
  color: #FFFFFF;
  padding: 14px 16px;
  font-weight: 600;
  letter-spacing: 0.3px;
}

.table-institutional td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-dark);
}

.table-institutional tr:nth-child(even) td {
  background-color: var(--color-bg-light);
}

.table-institutional tr:hover td {
  background-color: #F1F5F9;
}

.table-institutional tfoot td {
  background-color: #E2E8F0;
  font-weight: 700;
  color: var(--color-primary);
}

/* Callout & Transparency Boxes */
.callout-institutional {
  background-color: #F8FAFC;
  border-left: 4px solid var(--color-primary);
  padding: 20px 24px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: 24px 0;
}

.callout-institutional.warning {
  border-left-color: var(--color-accent);
  background-color: #FFFDF0;
}

.callout-institutional h4 {
  margin-bottom: 8px;
}

/* Forms */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group.full-width {
  grid-column: 1 / -1;
}

.form-group label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-text-dark);
}

.form-control {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-family: var(--font-body);
  color: var(--color-text-dark);
  background-color: #FFFFFF;
  min-height: 44px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0, 35, 102, 0.15);
}

textarea.form-control {
  min-height: 120px;
  resize: vertical;
}

.form-disclaimer {
  font-size: 0.82rem;
  color: var(--color-text-light);
  margin-top: 8px;
}

/* FAQ Accordions */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin: 24px 0;
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: #FFFFFF;
  overflow: hidden;
}

.faq-item summary {
  padding: 16px 20px;
  font-weight: 700;
  color: var(--color-primary);
  cursor: pointer;
  background-color: var(--color-bg-light);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 44px;
}

.faq-item summary::after {
  content: "+";
  font-size: 1.4rem;
  font-weight: 400;
  color: var(--color-primary);
  transition: transform 0.2s ease;
}

.faq-item[open] summary::after {
  content: "−";
}

.faq-item-content {
  padding: 18px 20px;
  font-size: 0.92rem;
  color: var(--color-text-muted);
  border-top: 1px solid var(--color-border);
}

/* ==========================================================================
   EXPANDED COMPLIANCE FOOTER ARCHITECTURE
   ========================================================================== */

.main-footer {
  background-color: var(--color-footer-bg);
  color: #CBD5E1;
  padding: 60px 0 30px;
  margin-top: auto;
  border-top: 4px solid var(--color-accent);
}

.footer-columns-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 36px;
  margin-bottom: 40px;
}

.footer-col h4 {
  color: #FFFFFF;
  font-size: 1.1rem;
  margin-bottom: 18px;
  position: relative;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-primary-light);
}

.footer-col h4::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 36px;
  height: 2px;
  background-color: var(--color-accent);
}

.footer-col p {
  color: #94A3B8;
  font-size: 0.88rem;
  line-height: 1.6;
}

.footer-links-list {
  list-style: none;
}

.footer-links-list li {
  margin-bottom: 10px;
}

.footer-links-list a {
  color: #CBD5E1;
  font-size: 0.88rem;
  display: inline-block;
  min-height: 36px;
  line-height: 36px;
}

.footer-links-list a:hover {
  color: var(--color-accent);
  padding-left: 4px;
}

.footer-contact-details {
  list-style: none;
  font-size: 0.88rem;
}

.footer-contact-details li {
  margin-bottom: 12px;
  display: flex;
  flex-direction: column;
}

.footer-contact-details strong {
  color: #FFFFFF;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.footer-contact-details a {
  color: var(--color-accent);
}

.footer-legal-bar {
  border-top: 1px solid var(--color-border-dark);
  padding-top: 24px;
  font-size: 0.78rem;
  line-height: 1.65;
  color: #94A3B8;
  text-align: justify;
}

.footer-legal-bar strong {
  color: #E2E8F0;
}

/* ==========================================================================
   RESPONSIVE BREAKPOINTS (Mobile & Tablet Compliance)
   ========================================================================== */

@media (max-width: 992px) {
  .institutional-grid-layout {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  
  .footer-columns-grid {
    grid-template-columns: 1fr 1fr;
    gap: 30px;
  }

  .catalog-grid {
    grid-template-columns: 1fr;
  }

  .nav-menu {
    gap: 0;
  }

  .nav-link {
    padding: 8px 10px;
    font-size: 0.86rem;
  }
}

@media (max-width: 768px) {
  /* Navigation mobile toggle */
  .mobile-toggle-btn {
    display: flex;
  }

  .nav-menu-wrapper {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: #FFFFFF;
    box-shadow: var(--shadow-lg);
    border-top: 1px solid var(--color-border);
    padding: 16px 20px;
  }

  #mobile-nav-checkbox:checked ~ .nav-menu-wrapper {
    display: block;
  }

  .nav-menu {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    gap: 8px;
  }

  .nav-link {
    width: 100%;
    padding: 12px 14px;
    font-size: 0.95rem;
  }

  .mega-dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: none;
    border-left: 2px solid var(--color-accent);
    padding: 6px 0 6px 16px;
    width: 100%;
  }

  .top-utility-strip {
    height: auto;
    padding: 8px 0;
  }

  .top-utility-inner {
    flex-direction: column;
    gap: 6px;
    align-items: flex-start;
  }

  .utility-tools {
    width: 100%;
    justify-content: space-between;
  }

  .hero-title {
    font-size: 1.85rem;
  }

  .main-content-column {
    padding: 22px 18px;
  }

  .footer-columns-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }
}