/* ==========================================================================
   PORTAIL OFFICIEL DE LA DEMEURE HISTORIQUE - FEUILLE DE STYLE PRINCIPALE
   Conformité stricte : Accessibilité WCAG AA, Fluid Grid, Pure CSS, Mobile-First
   Palette officielle : #0A4260, #E64A19, #0082AD, #C2185B, #2E7D32, #D32F2F
   ========================================================================== */

:root {
  --color-top-bar: #E64A19;
  --color-header-navy: #0A4260;
  --color-header-hover: #073046;
  --color-action-blue: #0082AD;
  --color-action-blue-hover: #00688B;
  --color-action-pink: #C2185B;
  --color-action-pink-hover: #9C1045;
  --color-lawn-green: #2E7D32;
  --color-lawn-green-hover: #1B5E20;
  --color-alert-red: #D32F2F;
  --color-alert-red-hover: #B71C1C;
  --color-heading: #0F172A;
  --color-body: #475569;
  --color-bg-white: #FFFFFF;
  --color-bg-tint: #F0FDF4;
  --color-bg-light: #F8FAFC;
  --color-border: #E2E8F0;
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --leaf-radius: 20px 80px 20px 80px;
  --leaf-radius-reverse: 80px 20px 80px 20px;
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.08);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 10px 25px rgba(15, 23, 42, 0.12);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  color: var(--color-body);
  background-color: var(--color-bg-light);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--color-heading);
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.01em;
}

h1 { font-size: 2.5rem; margin-bottom: 1.25rem; }
h2 { font-size: 2rem; margin-bottom: 1rem; }
h3 { font-size: 1.5rem; margin-bottom: 0.75rem; }
h4 { font-size: 1.25rem; margin-bottom: 0.5rem; }

p {
  margin-bottom: 1.2rem;
  max-width: 75ch;
}

a {
  color: var(--color-action-blue);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--color-action-blue-hover);
}

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

/* Container */
.container {
  width: 100%;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

/* Utilities */
.text-center { text-align: center; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.mb-5 { margin-bottom: 3rem; }

/* Top Utility Bar */
.top-bar {
  background-color: var(--color-top-bar);
  color: #FFFFFF;
  font-size: 0.85rem;
  padding: 8px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}

.top-bar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.top-bar-notice {
  font-weight: 600;
  letter-spacing: 0.02em;
  display: flex;
  align-items: center;
  gap: 8px;
}

.top-bar-links {
  display: flex;
  align-items: center;
  gap: 16px;
  list-style: none;
}

.top-bar-links a {
  color: #FFFFFF;
  opacity: 0.92;
  font-weight: 500;
}

.top-bar-links a:hover {
  opacity: 1;
  text-decoration: underline;
}

/* Main Header */
.main-header {
  background-color: var(--color-header-navy);
  color: #FFFFFF;
  position: relative;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

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

.brand-logo {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  color: #FFFFFF;
}

.brand-emblem {
  width: 48px;
  height: 48px;
  background: #FFFFFF;
  color: var(--color-header-navy);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.4rem;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.brand-titles {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: 0.03em;
  color: #FFFFFF;
  line-height: 1.1;
}

.brand-sub {
  font-size: 0.72rem;
  color: rgba(255, 255, 255, 0.75);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Navigation Menu */
.main-nav {
  display: flex;
  align-items: center;
}

.nav-menu {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 8px;
}

.nav-item {
  position: relative;
}

.nav-link {
  color: #FFFFFF;
  padding: 10px 14px;
  font-size: 0.92rem;
  font-weight: 600;
  border-radius: 6px;
  display: flex;
  align-items: center;
  gap: 6px;
  min-height: 44px;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.nav-link:hover, .nav-link:focus, .nav-item.active .nav-link {
  background-color: var(--color-header-hover);
  color: #FFFFFF;
}

/* Dropdown styling */
.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  background: #FFFFFF;
  min-width: 250px;
  border-radius: 8px;
  box-shadow: var(--shadow-lg);
  padding: 8px 0;
  list-style: none;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all 0.2s ease;
  z-index: 200;
  border: 1px solid var(--color-border);
}

.nav-item:hover .dropdown-menu,
.nav-item:focus-within .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-link {
  display: block;
  padding: 10px 18px;
  color: var(--color-heading);
  font-size: 0.88rem;
  font-weight: 500;
  transition: background-color 0.15s ease, color 0.15s ease;
}

.dropdown-link:hover {
  background-color: var(--color-bg-light);
  color: var(--color-action-blue);
}

/* Mobile Nav Toggle */
.mobile-toggle {
  display: none;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: #FFFFFF;
  padding: 8px 12px;
  border-radius: 6px;
  cursor: pointer;
  min-width: 44px;
  min-height: 44px;
  font-size: 1.25rem;
}

/* Sticky Action Strip */
.action-strip {
  background: #FFFFFF;
  border-bottom: 2px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 90;
  box-shadow: var(--shadow-sm);
  padding: 10px 0;
}

.action-strip-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.strip-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  font-size: 0.92rem;
  font-weight: 700;
  border-radius: 30px;
  color: #FFFFFF;
  min-height: 44px;
  white-space: nowrap;
  transition: transform 0.15s ease, background-color 0.2s ease, box-shadow 0.2s ease;
}

.strip-btn:hover {
  transform: translateY(-2px);
  color: #FFFFFF;
}

.btn-actions {
  background-color: var(--color-action-blue);
}
.btn-actions:hover {
  background-color: var(--color-action-blue-hover);
  box-shadow: 0 4px 14px rgba(0, 130, 173, 0.35);
}

.btn-benevolat {
  background-color: var(--color-action-pink);
}
.btn-benevolat:hover {
  background-color: var(--color-action-pink-hover);
  box-shadow: 0 4px 14px rgba(194, 24, 91, 0.35);
}

.btn-mission {
  background-color: var(--color-lawn-green);
}
.btn-mission:hover {
  background-color: var(--color-lawn-green-hover);
  box-shadow: 0 4px 14px rgba(46, 125, 50, 0.35);
}

.btn-alert-red {
  background-color: var(--color-alert-red);
}
.btn-alert-red:hover {
  background-color: var(--color-alert-red-hover);
  box-shadow: 0 4px 14px rgba(211, 47, 47, 0.35);
}

/* Hero Section */
.hero-section {
  position: relative;
  background: linear-gradient(180deg, #0A4260 0%, #062333 100%);
  color: #FFFFFF;
  padding: 60px 0 80px 0;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 40px;
  align-items: center;
}

.hero-content h1 {
  color: #FFFFFF;
  font-size: 2.8rem;
  line-height: 1.15;
  margin-bottom: 16px;
}

.hero-summary-2sent {
  font-size: 1.18rem;
  line-height: 1.6;
  color: #E2E8F0;
  margin-bottom: 24px;
  font-weight: 400;
  border-left: 3px solid var(--color-top-bar);
  padding-left: 16px;
}

.hero-cta-group {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 24px;
}

.hero-media-wrapper {
  position: relative;
}

.leaf-card-img {
  border-radius: var(--leaf-radius);
  box-shadow: var(--shadow-lg);
  border: 4px solid rgba(255, 255, 255, 0.2);
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
}

.leaf-card-img-rev {
  border-radius: var(--leaf-radius-reverse);
  box-shadow: var(--shadow-lg);
  border: 4px solid rgba(255, 255, 255, 0.2);
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
}

/* Notre Mission Card (Mandatory 120-150 words block) */
.notre-mission-card {
  background: #FFFFFF;
  border-radius: 16px;
  border: 2px solid var(--color-lawn-green);
  padding: 36px 32px;
  margin: 40px 0;
  box-shadow: var(--shadow-md);
  position: relative;
}

.notre-mission-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: #E8F5E9;
  color: var(--color-lawn-green);
  font-weight: 700;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 6px 14px;
  border-radius: 20px;
  margin-bottom: 16px;
}

.notre-mission-text {
  font-size: 1.12rem;
  line-height: 1.75;
  color: var(--color-heading);
  font-weight: 500;
}

/* Feature & Impact Blocks */
.feature-section {
  padding: 70px 0;
  background-color: var(--color-bg-light);
}

.feature-section.alt-bg {
  background-color: var(--color-bg-white);
}

.section-intro {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 50px auto;
}

.section-tag {
  color: var(--color-top-bar);
  font-weight: 700;
  font-size: 0.88rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 8px;
  display: block;
}

.cards-grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
}

.cards-grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 32px;
}

.feature-card {
  background: #FFFFFF;
  border-radius: 16px;
  border: 1px solid var(--color-border);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.feature-card-content {
  padding: 26px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.feature-card-title {
  font-size: 1.35rem;
  margin-bottom: 12px;
  color: var(--color-heading);
}

.feature-card-desc {
  font-size: 0.96rem;
  color: var(--color-body);
  line-height: 1.6;
  margin-bottom: 20px;
  flex-grow: 1;
}

.feature-card-meta {
  border-top: 1px solid var(--color-border);
  padding-top: 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.86rem;
  color: #64748B;
}

/* Metric Counters */
.metrics-strip {
  background: var(--color-header-navy);
  color: #FFFFFF;
  padding: 50px 0;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 30px;
  text-align: center;
}

.metric-item {
  padding: 16px;
}

.metric-number {
  font-family: var(--font-heading);
  font-size: 2.75rem;
  font-weight: 800;
  color: #38BDF8;
  margin-bottom: 6px;
}

.metric-label {
  font-size: 0.95rem;
  color: #CBD5E1;
  font-weight: 500;
}

/* Forms */
.form-container {
  background: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 36px;
  box-shadow: var(--shadow-md);
  max-width: 700px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-weight: 600;
  color: var(--color-heading);
  margin-bottom: 8px;
  font-size: 0.92rem;
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-family: var(--font-body);
  font-size: 0.96rem;
  color: var(--color-heading);
  background: #FFFFFF;
  min-height: 46px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-control:focus {
  outline: none;
  border-color: var(--color-action-blue);
  box-shadow: 0 0 0 3px rgba(0, 130, 173, 0.2);
}

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

/* Modal for AJAX feedback */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
}

.modal-overlay.active {
  display: flex;
}

.modal-box {
  background: #FFFFFF;
  border-radius: 16px;
  padding: 36px;
  max-width: 500px;
  width: 100%;
  text-align: center;
  box-shadow: var(--shadow-lg);
  position: relative;
  animation: modalFadeIn 0.25s ease;
}

@keyframes modalFadeIn {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

.modal-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: #E8F5E9;
  color: var(--color-lawn-green);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin: 0 auto 18px auto;
}

.modal-title {
  font-size: 1.5rem;
  margin-bottom: 12px;
  color: var(--color-heading);
}

.modal-text {
  font-size: 0.98rem;
  color: var(--color-body);
  margin-bottom: 24px;
}

.modal-close-btn {
  background: var(--color-header-navy);
  color: #FFFFFF;
  border: none;
  border-radius: 30px;
  padding: 10px 24px;
  font-weight: 600;
  cursor: pointer;
  font-size: 0.95rem;
  min-height: 44px;
}

/* Footer */
.site-footer {
  background-color: #061F2D;
  color: #94A3B8;
  font-size: 0.92rem;
  padding: 60px 0 30px 0;
  border-top: 4px solid var(--color-lawn-green);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 50px;
}

.footer-heading {
  color: #FFFFFF;
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 18px;
  letter-spacing: 0.02em;
}

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

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

.footer-links a {
  color: #94A3B8;
  font-size: 0.9rem;
  transition: color 0.15s ease;
}

.footer-links a:hover {
  color: #FFFFFF;
}

.mandatory-legal-box {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  padding: 20px;
  margin: 30px 0;
  font-size: 0.86rem;
  line-height: 1.6;
  color: #CBD5E1;
}

.copyright-bar {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 24px;
  text-align: center;
  font-size: 0.84rem;
  color: #64748B;
}

/* Accordion FAQ */
.faq-list {
  max-width: 850px;
  margin: 0 auto;
}

.faq-item {
  background: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  margin-bottom: 14px;
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: 18px 24px;
  background: none;
  border: none;
  text-align: left;
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-heading);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 48px;
}

.faq-answer {
  padding: 0 24px 20px 24px;
  font-size: 0.96rem;
  color: var(--color-body);
  display: none;
}

.faq-item.open .faq-answer {
  display: block;
}

/* Timeline */
.timeline {
  position: relative;
  max-width: 860px;
  margin: 40px auto;
  padding-left: 30px;
  border-left: 3px solid var(--color-action-blue);
}

.timeline-item {
  position: relative;
  margin-bottom: 40px;
}

.timeline-dot {
  position: absolute;
  left: -39px;
  top: 4px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--color-action-blue);
  border: 3px solid #FFFFFF;
  box-shadow: var(--shadow-sm);
}

.timeline-date {
  font-weight: 800;
  color: var(--color-top-bar);
  font-size: 1.1rem;
  margin-bottom: 4px;
}

.timeline-card {
  background: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 22px;
  box-shadow: var(--shadow-sm);
}

/* Responsive Media Queries */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.65rem; }
  .top-bar .container {
    justify-content: center;
    text-align: center;
  }
  .top-bar-links {
    display: none;
  }
  .mobile-toggle {
    display: block;
  }
  .main-nav {
    display: none;
    width: 100%;
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--color-header-navy);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: var(--shadow-lg);
  }
  .main-nav.active {
    display: block;
  }
  .nav-menu {
    flex-direction: column;
    align-items: stretch;
    padding: 10px 0;
    gap: 0;
  }
  .nav-link {
    padding: 12px 20px;
  }
  .dropdown-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    background: rgba(0, 0, 0, 0.2);
    box-shadow: none;
    border: none;
    border-radius: 0;
    padding-left: 20px;
  }
  .dropdown-link {
    color: #E2E8F0;
  }
  .dropdown-link:hover {
    background: transparent;
    color: #FFFFFF;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .action-strip-inner {
    flex-direction: column;
    width: 100%;
  }
  .strip-btn {
    width: 100%;
  }
}