/* ==========================================================================
   STYLE.CSS - PATRIMOINE REALLONNAIS (ASSOCIATION LOI 1901)
   Architecture CSS modulaire, légère, sans framework externe
   Charte graphique : Bleu Royal (#002366), Or (#FFD700), Gris Clair (#F4F6F9)
   ========================================================================== */

:root {
  --color-primary: #002366;
  --color-primary-dark: #001744;
  --color-primary-light: #0d388e;
  --color-accent: #FFD700;
  --color-accent-hover: #E6C200;
  --color-bg-light: #F4F6F9;
  --color-bg-white: #FFFFFF;
  --color-text-main: #222933;
  --color-text-muted: #576574;
  --color-border: #E2E8F0;
  --color-border-dark: #CBD5E1;
  --color-success: #1B8755;
  --font-serif: "Merriweather", "Georgia", serif;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --max-width: 1240px;
  --transition-speed: 0.25s;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-sans);
  color: var(--color-text-main);
  background-color: var(--color-bg-white);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: 8px;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-speed) ease;
}

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

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

h1 { font-size: 2.25rem; }
h2 { font-size: 1.75rem; }
h3 { font-size: 1.35rem; }
h4 { font-size: 1.15rem; }

p {
  margin-bottom: 1.2rem;
  color: var(--color-text-main);
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ==========================================================================
   DOUBLE-DECKER HEADER SYSTEM
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--color-bg-white);
  box-shadow: 0 2px 10px rgba(0, 35, 102, 0.08);
}

/* Row 1: Top Utility Strip */
.top-utility-strip {
  background: #F4F6F9;
  color: #333333;
  height: 42px;
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  border-bottom: 1px solid var(--color-border);
}

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

.rna-badge {
  font-weight: 600;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.utility-status {
  color: var(--color-text-muted);
  border-left: 1px solid var(--color-border-dark);
  padding-left: 14px;
}

.utility-right {
  display: flex;
  align-items: center;
  gap: 18px;
}

.search-simulation {
  display: flex;
  align-items: center;
  background: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 2px 8px;
}

.search-simulation input {
  border: none;
  background: transparent;
  font-size: 12px;
  padding: 4px;
  outline: none;
  width: 160px;
}

.search-simulation button {
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--color-primary);
  font-size: 12px;
}

.lang-selector {
  font-weight: 600;
  color: var(--color-primary);
  font-size: 12px;
}

/* Row 2: Main Navigation Bar */
.main-nav-bar {
  background: var(--color-bg-white);
  padding: 12px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 3px solid var(--color-accent);
}

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

.brand-title {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: 0.5px;
  font-family: var(--font-serif);
  line-height: 1.2;
}

.brand-sub {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.nav-menu-wrapper {
  display: flex;
  align-items: center;
  gap: 20px;
}

.main-menu {
  display: flex;
  list-style: none;
  align-items: center;
  gap: 6px;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 10px 14px;
  color: var(--color-primary);
  font-weight: 600;
  font-size: 0.92rem;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  border-radius: 4px;
  transition: all var(--transition-speed) ease;
  min-height: 44px;
}

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

/* Dropdown Sub-menu */
.dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--color-bg-white);
  min-width: 280px;
  box-shadow: 0 8px 24px rgba(0, 35, 102, 0.15);
  border: 1px solid var(--color-border);
  border-top: 3px solid var(--color-primary);
  border-radius: 0 0 6px 6px;
  list-style: none;
  padding: 8px 0;
  z-index: 9999;
}

.nav-item:hover .dropdown-menu {
  display: block;
}

.dropdown-item a {
  display: block;
  padding: 10px 20px;
  color: var(--color-text-main);
  font-size: 0.9rem;
  font-weight: 500;
  border-bottom: 1px solid #F1F5F9;
  min-height: 44px;
  line-height: 1.4;
}

.dropdown-item:last-child a {
  border-bottom: none;
}

.dropdown-item a:hover {
  background: var(--color-bg-light);
  color: var(--color-primary);
  padding-left: 24px;
}

.mobile-menu-toggle {
  display: none;
  background: var(--color-bg-light);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 10px 14px;
  cursor: pointer;
  font-size: 1.1rem;
  color: var(--color-primary);
  min-height: 44px;
  min-width: 44px;
}

/* Header Action Button */
.btn-header-contact {
  background: var(--color-primary);
  color: #FFFFFF !important;
  font-weight: 700;
  font-size: 0.88rem;
  padding: 10px 22px;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border: 1px solid var(--color-primary);
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-speed) ease;
}

.btn-header-contact:hover {
  background: var(--color-primary-dark);
  color: #FFFFFF;
}

/* ==========================================================================
   BUTTONS & ACTION COMPONENTS
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 26px;
  font-weight: 700;
  font-size: 0.95rem;
  border-radius: 4px;
  cursor: pointer;
  transition: all var(--transition-speed) ease;
  min-height: 44px;
  text-align: center;
}

.btn-primary {
  background: var(--color-primary);
  color: #FFFFFF;
  border: 2px solid var(--color-primary);
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  color: #FFFFFF;
  border-color: var(--color-primary-dark);
}

.btn-accent {
  background: var(--color-accent);
  color: var(--color-primary);
  border: 2px solid var(--color-accent);
}

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

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

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

/* ==========================================================================
   LAYOUT STRUCTURES & GRIDS
   ========================================================================== */
main {
  flex: 1;
}

.page-hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #FFFFFF;
  padding: 56px 0;
  position: relative;
  overflow: hidden;
}

.page-hero h1 {
  color: #FFFFFF;
  margin-bottom: 1rem;
}

.page-hero .lead {
  font-size: 1.2rem;
  line-height: 1.6;
  max-width: 820px;
  color: #E2E8F0;
  margin-bottom: 0;
}

.page-hero-badge {
  display: inline-block;
  background: rgba(255, 215, 0, 0.18);
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
  padding: 4px 12px;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  border-radius: 4px;
  margin-bottom: 14px;
}

/* Two-column layout (3fr main / 1fr side-rail) */
.layout-two-column {
  display: grid;
  grid-template-columns: 3fr 1fr;
  gap: 36px;
  padding: 48px 0;
}

.main-column {
  min-width: 0;
}

.sidebar-column {
  min-width: 0;
}

.sidebar-box {
  background: var(--color-bg-light);
  border: 1px solid var(--color-border);
  border-top: 4px solid var(--color-primary);
  border-radius: 6px;
  padding: 24px;
  margin-bottom: 28px;
}

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

.key-stats-list {
  list-style: none;
}

.key-stats-item {
  padding: 12px 0;
  border-bottom: 1px dashed var(--color-border-dark);
}

.key-stats-item:last-child {
  border-bottom: none;
}

.stat-number {
  font-size: 1.7rem;
  font-weight: 800;
  color: var(--color-primary);
  font-family: var(--font-serif);
  display: block;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.3;
}

/* Card Grids */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
  margin: 32px 0;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin: 32px 0;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin: 32px 0;
}

.content-card {
  background: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  overflow: hidden;
  transition: transform var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
  display: flex;
  flex-direction: column;
}

.content-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 25px rgba(0, 35, 102, 0.08);
}

.content-card-img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  border-radius: 8px 8px 0 0;
}

.content-card-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.content-card-body h3 {
  margin-bottom: 0.75rem;
}

.content-card-body p {
  flex: 1;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* Tag & Badges */
.badge {
  display: inline-block;
  padding: 3px 9px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-radius: 4px;
  margin-bottom: 10px;
}

.badge-primary {
  background: rgba(0, 35, 102, 0.1);
  color: var(--color-primary);
}

.badge-accent {
  background: rgba(255, 215, 0, 0.25);
  color: #8C7300;
}

.badge-success {
  background: rgba(27, 135, 85, 0.12);
  color: var(--color-success);
}

/* Institutional Notice & Funding Box */
.notice-box {
  background: #EEF2F9;
  border-left: 4px solid var(--color-primary);
  border-radius: 0 6px 6px 0;
  padding: 20px 24px;
  margin: 28px 0;
  font-size: 0.95rem;
}

.notice-box strong {
  color: var(--color-primary);
}

.funding-declaration-box {
  background: #FFFDF0;
  border: 1px solid #FFE58F;
  border-left: 4px solid var(--color-accent);
  padding: 22px;
  border-radius: 6px;
  margin: 32px 0;
}

.funding-declaration-box h4 {
  color: #735100;
  margin-bottom: 8px;
}

/* Tables (Financial & Commitments) */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  margin: 28px 0;
  border: 1px solid var(--color-border);
  border-radius: 6px;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
  text-align: left;
}

.data-table th {
  background: var(--color-primary);
  color: #FFFFFF;
  padding: 14px 18px;
  font-weight: 600;
  letter-spacing: 0.3px;
}

.data-table td {
  padding: 12px 18px;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-main);
}

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

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

.data-table tfoot td {
  font-weight: 700;
  background: #E6ECF5;
  color: var(--color-primary);
}

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

.form-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text-main);
  margin-bottom: 6px;
}

.form-control {
  width: 100%;
  padding: 12px 14px;
  font-size: 0.95rem;
  border: 1px solid var(--color-border-dark);
  border-radius: 4px;
  background: var(--color-bg-white);
  color: var(--color-text-main);
  outline: none;
  transition: border-color var(--transition-speed) ease;
}

.form-control:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0, 35, 102, 0.12);
}

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

/* Roadmap (3-step transparency) */
.roadmap-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin: 36px 0;
}

.roadmap-card {
  background: var(--color-bg-light);
  border: 1px solid var(--color-border);
  border-top: 4px solid var(--color-accent);
  padding: 24px;
  border-radius: 6px;
  position: relative;
}

.roadmap-step-num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-primary);
  font-family: var(--font-serif);
  line-height: 1;
  margin-bottom: 12px;
}

/* FAQ Component */
.faq-item {
  border: 1px solid var(--color-border);
  border-radius: 6px;
  margin-bottom: 16px;
  overflow: hidden;
}

.faq-question {
  background: var(--color-bg-light);
  padding: 16px 20px;
  font-weight: 700;
  color: var(--color-primary);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-answer {
  padding: 20px;
  background: var(--color-bg-white);
  border-top: 1px solid var(--color-border);
  color: var(--color-text-muted);
}

/* ==========================================================================
   FOOTER SYSTEM & MANDATORY DISCLOSURES
   ========================================================================== */
.site-footer {
  background: var(--color-primary-dark);
  color: #D1D5DB;
  font-size: 0.9rem;
  padding-top: 56px;
  border-top: 4px solid var(--color-accent);
}

.footer-top-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 36px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-col h4 {
  color: #FFFFFF;
  font-size: 1.1rem;
  margin-bottom: 1.2rem;
  position: relative;
  padding-bottom: 8px;
}

.footer-col h4::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 32px;
  height: 2px;
  background: var(--color-accent);
}

.footer-col p {
  color: #9CA3AF;
  font-size: 0.88rem;
  line-height: 1.6;
}

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

.footer-links li {
  margin-bottom: 8px;
}

.footer-links a {
  color: #D1D5DB;
  font-size: 0.88rem;
  display: inline-block;
  padding: 2px 0;
}

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

.footer-contact-item {
  display: flex;
  gap: 10px;
  margin-bottom: 10px;
  font-size: 0.88rem;
  color: #D1D5DB;
}

.footer-notice-box {
  background: rgba(0, 0, 0, 0.25);
  padding: 24px;
  border-radius: 6px;
  margin: 32px 0;
  font-size: 0.85rem;
  color: #9CA3AF;
  line-height: 1.6;
  border-left: 3px solid var(--color-accent);
}

.footer-bottom-bar {
  padding: 20px 0;
  background: #000F2E;
  font-size: 0.8rem;
  color: #9CA3AF;
  text-align: center;
}

.footer-bottom-links {
  margin-top: 8px;
  display: flex;
  justify-content: center;
  gap: 20px;
}

.footer-bottom-links a {
  color: #9CA3AF;
}

.footer-bottom-links a:hover {
  color: var(--color-accent);
}

/* ==========================================================================
   RESPONSIVE MEDIA QUERIES (BREAKPOINTS 992px & 768px)
   ========================================================================== */
@media (max-width: 992px) {
  .layout-two-column {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .footer-top-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .roadmap-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
}

@media (max-width: 768px) {
  .top-utility-strip {
    height: auto;
    padding: 8px 16px;
    flex-direction: column;
    gap: 8px;
    align-items: flex-start;
  }

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

  .search-simulation input {
    width: 120px;
  }

  .main-nav-bar {
    padding: 12px 16px;
    flex-wrap: wrap;
  }

  .mobile-menu-toggle {
    display: block;
  }

  .nav-menu-wrapper {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    margin-top: 14px;
    padding-top: 14px;
    border-top: 1px solid var(--color-border);
  }

  .nav-menu-wrapper.active {
    display: flex;
  }

  .main-menu {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }

  .dropdown-menu {
    position: static;
    display: none;
    box-shadow: none;
    border: none;
    border-left: 2px solid var(--color-accent);
    margin-left: 14px;
    background: var(--color-bg-light);
  }

  .nav-item.dropdown-open .dropdown-menu {
    display: block;
  }

  .btn-header-contact {
    margin-top: 10px;
    width: 100%;
  }

  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }

  .footer-top-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  h1 { font-size: 1.8rem; }
  h2 { font-size: 1.45rem; }
  h3 { font-size: 1.2rem; }
}