/* ==========================================================================
   ATOUT LIVRE — Official Non-Profit Responsive Stylesheet
   Association Loi 1901 | RNA: W263002546 | SIREN: 850034265
   Saint-Rambert-d'Albon, France
   ========================================================================== */

:root {
  --color-canvas: #FAFAF9;
  --color-white: #FFFFFF;
  --color-sage-bg: #F0FDF4;
  --color-sage-border: #BBF7D0;
  --color-sage-dark: #15803D;
  --color-gunmetal: #0F172A;
  --color-gunmetal-light: #1E293B;
  --color-gunmetal-surface: #334155;
  --color-green-primary: #16A34A;
  --color-green-hover: #15803D;
  --color-trust-blue: #1E40AF;
  --color-trust-blue-hover: #1D4ED8;
  --color-text-main: #1E293B;
  --color-text-muted: #64748B;
  --color-border-light: #E2E8F0;
  --color-border-subtle: #F1F5F9;
  --radius-card: 12px;
  --radius-btn: 8px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
  --shadow-card: 0 4px 20px rgba(15, 23, 42, 0.06);
  --shadow-hover: 0 12px 28px rgba(15, 23, 42, 0.12);
  --transition-smooth: cubic-bezier(0.16, 1, 0.3, 1);
  --font-family-display: 'Merriweather', Georgia, serif;
  --font-family-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --container-max-width: 1200px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--color-canvas);
  color: var(--color-text-main);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family-body);
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1 0 auto;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.15s ease;
}

/* Layout Container */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

.section-spacing {
  padding-top: 64px;
  padding-bottom: 64px;
}

.section-spacing-lg {
  padding-top: 80px;
  padding-bottom: 80px;
}

/* Typography Hierarchy */
h1, h2, h3, h4 {
  font-family: var(--font-family-display);
  color: var(--color-gunmetal);
  font-weight: 700;
  line-height: 1.25;
  text-wrap: balance;
}

h1 {
  font-size: 2.5rem;
  margin-bottom: 1.25rem;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 2rem;
  margin-bottom: 1rem;
  letter-spacing: -0.015em;
}

h3 {
  font-size: 1.35rem;
  margin-bottom: 0.75rem;
}

h4 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

p {
  margin-bottom: 1.25rem;
  color: var(--color-text-main);
  font-size: 1.05rem;
  line-height: 1.75;
}

.lead-text {
  font-size: 1.2rem;
  line-height: 1.8;
  color: var(--color-gunmetal-light);
  font-weight: 500;
  margin-bottom: 1.75rem;
}

.section-kicker {
  display: inline-block;
  font-size: 0.825rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 700;
  color: var(--color-green-primary);
  margin-bottom: 0.75rem;
}

.tabular-nums {
  font-variant-numeric: tabular-nums;
}

/* ==========================================================================
   Header & Navigation (3-Zone Top Bar Contract)
   ========================================================================== */
.site-header {
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-border-light);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.03);
}

.top-bar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

/* Zone 1: Single Text Element Wordmark */
.brand-wordmark {
  font-family: var(--font-family-display);
  font-size: 1.45rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--color-gunmetal);
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-wordmark:hover {
  color: var(--color-green-primary);
}

.brand-tag {
  font-size: 0.75rem;
  font-family: var(--font-family-body);
  font-weight: 600;
  color: var(--color-text-muted);
  border-left: 1px solid var(--color-border-light);
  padding-left: 10px;
  line-height: 1.2;
}

/* Zone 2: 4–6 Navigation Links */
.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text-main);
  padding: 8px 0;
  position: relative;
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--color-green-primary);
}

.nav-link.active {
  color: var(--color-green-primary);
  font-weight: 600;
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--color-green-primary);
  border-radius: 2px;
}

/* Zone 3: Primary Action */
.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background-color: var(--color-green-primary);
  color: var(--color-white);
  padding: 10px 20px;
  border-radius: var(--radius-btn);
  font-size: 0.95rem;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s var(--transition-smooth);
  white-space: nowrap;
  min-height: 44px;
}

.btn-primary:hover {
  background-color: var(--color-green-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(22, 163, 74, 0.25);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background-color: var(--color-white);
  color: var(--color-gunmetal);
  padding: 10px 20px;
  border-radius: var(--radius-btn);
  font-size: 0.95rem;
  font-weight: 600;
  border: 1px solid var(--color-border-light);
  cursor: pointer;
  transition: all 0.2s var(--transition-smooth);
  white-space: nowrap;
  min-height: 44px;
}

.btn-secondary:hover {
  background-color: var(--color-border-subtle);
  border-color: #CBD5E1;
  color: var(--color-gunmetal-light);
  transform: translateY(-1px);
}

.btn-trust {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background-color: var(--color-trust-blue);
  color: var(--color-white);
  padding: 10px 20px;
  border-radius: var(--radius-btn);
  font-size: 0.95rem;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s var(--transition-smooth);
  white-space: nowrap;
  min-height: 44px;
}

.btn-trust:hover {
  background-color: var(--color-trust-blue-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(30, 64, 175, 0.25);
}

/* Mobile Navigation Toggle */
.mobile-nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-border-light);
  border-radius: 8px;
  padding: 10px;
  cursor: pointer;
  color: var(--color-gunmetal);
  min-width: 44px;
  min-height: 44px;
}

.mobile-nav-toggle:focus-visible {
  outline: 2px solid var(--color-green-primary);
}

/* Mobile Menu Overlay Container */
.mobile-menu {
  display: none;
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-border-light);
  padding: 20px 24px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
}

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

.mobile-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.mobile-nav-list .nav-link {
  font-size: 1.05rem;
  display: block;
  padding: 8px 0;
}

/* ==========================================================================
   Hero Banners & Visual Composition
   ========================================================================== */
.page-hero {
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-border-light);
  padding-top: 56px;
  padding-bottom: 56px;
}

.hero-grid-split {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
}

.hero-text-col {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

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

.hero-full-banner {
  margin-top: 32px;
  position: relative;
}

/* Donit Style Photography Framing & Figcaptions */
.doc-figure {
  margin: 20px 0 8px 0;
}

.doc-figure img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-card);
  border: 1px solid #E5E7EB;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
  object-fit: cover;
  transition: transform 0.3s var(--transition-smooth);
}

.doc-figure:hover img {
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

.doc-figure figcaption {
  font-size: 0.875rem;
  color: #64748B;
  margin-top: 8px;
  margin-bottom: 20px;
  font-style: italic;
  line-height: 1.5;
}

/* ==========================================================================
   Card Styling & Grids
   ========================================================================== */
.card-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.card-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.card-grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.card-clean {
  background-color: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-card);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s var(--transition-smooth), box-shadow 0.25s var(--transition-smooth);
  display: flex;
  flex-direction: column;
}

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

/* Mandatory Mission Card Container (#F0FDF4) */
.mission-container-card {
  background-color: var(--color-sage-bg);
  border: 1px solid var(--color-sage-border);
  border-radius: var(--radius-card);
  padding: 40px;
  margin-top: 36px;
  margin-bottom: 48px;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

.mission-container-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 6px;
  height: 100%;
  background-color: var(--color-green-primary);
}

.mission-header-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-sage-dark);
  margin-bottom: 16px;
}

.mission-paragraph-exact {
  font-size: 1.15rem;
  line-height: 1.85;
  color: #14532D;
  font-weight: 500;
  margin-bottom: 0;
}

/* Metrics Grid Component */
.metrics-strip {
  background-color: var(--color-gunmetal);
  color: var(--color-white);
  border-radius: var(--radius-card);
  padding: 40px;
  margin: 40px 0;
  box-shadow: var(--shadow-card);
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}

.metric-item {
  text-align: left;
  border-left: 2px solid var(--color-green-primary);
  padding-left: 18px;
}

.metric-value {
  font-family: var(--font-family-display);
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--color-white);
  line-height: 1.1;
  margin-bottom: 6px;
}

.metric-label {
  font-size: 0.9rem;
  color: #94A3B8;
  line-height: 1.4;
}

/* Project Cards with Verified Indicators */
.project-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-card);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: transform 0.25s var(--transition-smooth), box-shadow 0.25s var(--transition-smooth);
}

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

.project-meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.project-status-indicator {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  color: var(--color-green-primary);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-green-primary);
}

.project-progress-bar {
  width: 100%;
  height: 6px;
  background-color: #E2E8F0;
  border-radius: 3px;
  overflow: hidden;
  margin: 14px 0 18px 0;
}

.project-progress-fill {
  height: 100%;
  background-color: var(--color-green-primary);
  border-radius: 3px;
}

/* Leadership Transparency Profiles */
.profile-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-card);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s var(--transition-smooth);
}

.profile-card:hover {
  transform: translateY(-4px);
}

.profile-role {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-trust-blue);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 4px;
}

.profile-name {
  font-family: var(--font-family-display);
  font-size: 1.35rem;
  color: var(--color-gunmetal);
  margin-bottom: 12px;
}

.profile-bio {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.65;
}

/* Event List Card */
.event-item {
  background-color: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-card);
  padding: 28px;
  display: grid;
  grid-template-columns: 140px 1fr auto;
  gap: 24px;
  align-items: center;
  margin-bottom: 20px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s var(--transition-smooth);
}

.event-item:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-card);
}

.event-date-box {
  background-color: var(--color-sage-bg);
  border: 1px solid var(--color-sage-border);
  border-radius: 8px;
  padding: 14px;
  text-align: center;
}

.event-month {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--color-sage-dark);
}

.event-day {
  font-family: var(--font-family-display);
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-gunmetal);
  line-height: 1;
  margin: 4px 0;
}

.event-year {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* Form Styling & AJAX Modal */
.form-group {
  margin-bottom: 20px;
}

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

.form-input, .form-textarea, .form-select {
  width: 100%;
  padding: 12px 16px;
  font-size: 1rem;
  font-family: inherit;
  color: var(--color-text-main);
  background-color: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-btn);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-input:focus, .form-textarea:focus, .form-select:focus {
  outline: none;
  border-color: var(--color-green-primary);
  box-shadow: 0 0 0 3px rgba(22, 163, 74, 0.15);
}

.form-textarea {
  min-height: 140px;
  resize: vertical;
}

/* Modal Popup for AJAX Thank You */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(4px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

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

.modal-content {
  background-color: var(--color-white);
  border-radius: var(--radius-card);
  padding: 40px;
  max-width: 520px;
  width: 100%;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
  text-align: center;
  animation: modalPop 0.3s var(--transition-smooth);
}

@keyframes modalPop {
  from { opacity: 0; transform: scale(0.92); }
  to { opacity: 1; transform: scale(1); }
}

.modal-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background-color: var(--color-sage-bg);
  color: var(--color-green-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin-bottom: 20px;
  border: 2px solid var(--color-sage-border);
}

/* ==========================================================================
   Master Footer (#0F172A Dark Gunmetal Container)
   ========================================================================== */
.site-footer {
  background-color: var(--color-gunmetal);
  color: #94A3B8;
  padding-top: 64px;
  padding-bottom: 40px;
  border-top: 1px solid #1E293B;
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}

.footer-heading {
  font-family: var(--font-family-body);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-white);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 18px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

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

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

.footer-legal-address {
  font-size: 0.88rem;
  line-height: 1.65;
  color: #94A3B8;
  margin-bottom: 16px;
}

.footer-statutory-tag {
  font-size: 0.8rem;
  color: #CBD5E1;
  background-color: #1E293B;
  padding: 6px 12px;
  border-radius: 6px;
  display: inline-block;
  margin-bottom: 12px;
}

/* Main Mandatory Disclosure Text Block */
.footer-disclosure-card {
  background-color: #1E293B;
  border: 1px solid #334155;
  border-radius: 8px;
  padding: 24px;
  margin-bottom: 32px;
}

.footer-disclosure-text {
  font-size: 0.875rem;
  line-height: 1.7;
  color: #CBD5E1;
  margin-bottom: 0;
}

.footer-bottom-divider {
  border-top: 1px solid #1E293B;
  padding-top: 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-copyright {
  font-size: 0.825rem;
  color: #64748B;
  margin-bottom: 0;
}

/* ==========================================================================
   Responsive Breakpoints (@media)
   ========================================================================== */
@media (max-width: 992px) {
  .hero-grid-split {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  
  .card-grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .card-grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 768px) {
  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.6rem;
  }

  .main-nav {
    display: none;
  }

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

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

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

  .event-item {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .event-date-box {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 16px;
  }

  .event-day {
    font-size: 1.5rem;
    margin: 0;
  }

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

  .footer-bottom-divider {
    flex-direction: column;
    text-align: center;
  }
}