/* ==========================================================================
   CENTRE SCIENTIFIQUE DES HAUTS CANTONS HERAULTAIS
   Feuille de style principale - Architecture Néo-Brutaliste Éditoriale (2026)
   Cadre Réglementaire Association Loi 1901 - Utilité Publique & Rayonnement Culturel
   ========================================================================== */

:root {
  --color-white: #FFFFFF;
  --color-cream: #F5F5F0;
  --color-slate: #1E293B;
  --color-slate-dark: #0F172A;
  --color-terracotta: #C2410C;
  --color-terracotta-light: #FFEDD5;
  --color-ochre: #4D7C0F;
  --color-ochre-light: #ECFDF5;
  --color-muted: #64748B;
  --border-width: 1px;
  --border-thick: 2px;
  --border-color: #1E293B;
  --shadow-block: 4px 4px 0px #1E293B;
  --shadow-block-sm: 2px 2px 0px #1E293B;
  --shadow-block-lg: 8px 8px 0px #1E293B;
  --font-serif: "Newsreader", "Georgia", "Times New Roman", serif;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", "Courier New", monospace;
  --header-height: 130px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--color-cream);
  color: var(--color-slate);
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-cream);
  color: var(--color-slate);
  line-height: 1.65;
  padding-top: var(--header-height);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ==========================================================================
   TYPOGRAPHIE FLUIDE & ÉLÉMENTS STRUCTURÉS
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  color: var(--color-slate);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2rem, 4.5vw, 3.5rem);
  margin-bottom: 1.25rem;
}

h2 {
  font-size: clamp(1.6rem, 3.2vw, 2.4rem);
  margin-bottom: 1rem;
}

h3 {
  font-size: clamp(1.25rem, 2.2vw, 1.75rem);
  margin-bottom: 0.75rem;
}

p {
  margin-bottom: 1.25rem;
  max-width: 75ch;
  font-size: 1.05rem;
}

a {
  color: var(--color-slate);
  text-decoration: none;
  transition: all 0.2s ease-in-out;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  border: var(--border-width) solid var(--border-color);
  background-color: var(--color-white);
}

.mono-tag {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.35rem 0.65rem;
  border: var(--border-width) solid var(--border-color);
  background: var(--color-white);
  display: inline-block;
  white-space: nowrap;
}

.mono-tag-ochre {
  background-color: var(--color-ochre-light);
  color: var(--color-ochre);
  font-weight: 700;
}

.mono-tag-terracotta {
  background-color: var(--color-terracotta-light);
  color: var(--color-terracotta);
  font-weight: 700;
}

/* ==========================================================================
   BOUTONS NÉO-BRUTALISTES & CTA (CONFORMITÉ LOI 1901)
   ========================================================================== */
.btn-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.7rem;
  min-height: 44px;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background-color: var(--color-slate);
  color: var(--color-white);
  border: var(--border-width) solid var(--border-color);
  box-shadow: var(--shadow-block);
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  white-space: nowrap;
}

.btn-cta:hover, .btn-cta:focus {
  transform: translate(-3px, -3px);
  box-shadow: 6px 6px 0px var(--border-color);
  background-color: var(--color-slate-dark);
  color: var(--color-white);
}

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

.btn-cta-secondary:hover {
  background-color: var(--color-cream);
  color: var(--color-slate);
}

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

.btn-cta-terracotta:hover {
  background-color: #9A3412;
  color: var(--color-white);
}

/* ==========================================================================
   HEADER FIXE & BANDES INSTITUTIONNELLES
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 10000;
  background-color: var(--color-white);
  border-bottom: var(--border-width) solid var(--border-color);
}

.top-utility-strip {
  background-color: var(--color-slate);
  color: #E2E8F0;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding: 0.45rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: var(--border-width) solid #334155;
}

.top-utility-left {
  display: flex;
  gap: 1.5rem;
  align-items: center;
  flex-wrap: wrap;
}

.top-utility-right a {
  color: #CBD5E1;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.top-utility-right a:hover {
  color: var(--color-white);
}

.main-navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1.5rem;
  max-width: 1400px;
  margin: 0 auto;
}

.site-logo {
  display: flex;
  flex-direction: column;
}

.logo-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--color-slate);
}

.logo-subtitle {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--color-terracotta);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 1.5rem;
  align-items: center;
}

.nav-link {
  font-family: var(--font-sans);
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--color-slate);
  padding: 0.5rem 0.65rem;
  border-bottom: 2px solid transparent;
}

.nav-link:hover, .nav-link.active {
  border-bottom: 2px solid var(--color-terracotta);
  color: var(--color-terracotta);
}

/* MEGA MENU "NOS ACTIONS" */
.has-mega-menu {
  position: relative;
}

.mega-menu-panel {
  display: none;
  position: absolute;
  top: 100%;
  left: -200px;
  width: 780px;
  background-color: var(--color-white);
  border: var(--border-width) solid var(--border-color);
  box-shadow: var(--shadow-block-lg);
  padding: 1.5rem;
  z-index: 10001;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 0.5rem;
}

.has-mega-menu:hover .mega-menu-panel,
.has-mega-menu:focus-within .mega-menu-panel {
  display: grid;
}

.mega-menu-col {
  border-right: 1px dashed #CBD5E1;
  padding-right: 1rem;
}

.mega-menu-col:last-child {
  border-right: none;
  padding-right: 0;
}

.mega-col-title {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--color-terracotta);
  margin-bottom: 0.85rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid #E2E8F0;
  letter-spacing: 0.05em;
}

.mega-menu-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.mega-item-link {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-slate);
  padding: 0.35rem 0.5rem;
  border-left: 2px solid transparent;
}

.mega-item-link:hover {
  border-left: 2px solid var(--color-terracotta);
  background-color: var(--color-cream);
  padding-left: 0.65rem;
}

.mega-item-desc {
  display: block;
  font-size: 0.75rem;
  color: var(--color-muted);
  font-weight: 400;
  margin-top: 0.15rem;
}

/* MENU MOBILE TOGGLE */
.mobile-menu-toggle {
  display: none;
  background: var(--color-white);
  border: var(--border-width) solid var(--border-color);
  padding: 0.5rem 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: var(--shadow-block-sm);
  min-height: 44px;
}

/* ==========================================================================
   CONTENEURS DE PAGE & SECTIONS
   ========================================================================== */
.main-wrapper {
  flex: 1;
  width: 100%;
}

.container-boxed {
  max-width: 1320px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem;
}

.section-hero {
  background-color: var(--color-white);
  border-bottom: var(--border-width) solid var(--border-color);
  padding: 3.5rem 1.5rem;
}

.page-header-banner {
  background-color: var(--color-slate);
  color: var(--color-white);
  padding: 3rem 1.5rem;
  border-bottom: var(--border-width) solid var(--border-color);
  position: relative;
  overflow: hidden;
}

.page-header-banner h1 {
  color: var(--color-white);
}

.page-header-banner p {
  color: #E2E8F0;
}

.editorial-card {
  background-color: var(--color-white);
  border: var(--border-width) solid var(--border-color);
  box-shadow: var(--shadow-block);
  padding: 2rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.editorial-card:hover {
  transform: translate(-4px, -4px);
  box-shadow: 6px 6px 0px var(--border-color);
}

.card-cream {
  background-color: var(--color-cream);
}

.card-slate {
  background-color: var(--color-slate);
  color: var(--color-white);
}

.card-slate h2, .card-slate h3, .card-slate p {
  color: var(--color-white);
}

/* GRILLES STRUCTURELLES */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

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

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.grid-asym-1-2 {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 2.5rem;
  align-items: center;
}

.grid-asym-2-1 {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 2.5rem;
  align-items: center;
}

/* ==========================================================================
   CLAUSE STATUTAIRE, ENCADRÉS LÉGAUX & LOI 1901
   ========================================================================== */
.reinvestment-clause-box {
  background-color: var(--color-cream);
  border: 2px solid var(--color-slate);
  padding: 1.5rem;
  margin: 2rem 0;
  box-shadow: var(--shadow-block);
}

.reinvestment-clause-box h4 {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--color-terracotta);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.reinvestment-clause-box p {
  font-style: italic;
  font-weight: 600;
  margin-bottom: 0;
  color: var(--color-slate);
}

.stats-matrix {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  margin: 3rem 0;
}

.stat-box {
  background-color: var(--color-white);
  border: var(--border-width) solid var(--border-color);
  padding: 1.5rem;
  box-shadow: var(--shadow-block);
  text-align: center;
}

.stat-number {
  font-family: var(--font-mono);
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-terracotta);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.stat-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-slate);
}

/* ==========================================================================
   FORMULAIRES D'ENGAGEMENT BÉNÉVOLE & CONTACT
   ========================================================================== */
.form-neobrutal {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-label {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--color-slate);
}

.form-input, .form-textarea, .form-select {
  width: 100%;
  padding: 0.85rem;
  font-family: var(--font-sans);
  font-size: 1rem;
  color: var(--color-slate);
  background-color: var(--color-white);
  border: var(--border-width) solid var(--border-color);
  box-shadow: var(--shadow-block-sm);
  outline: none;
}

.form-input:focus, .form-textarea:focus, .form-select:focus {
  background-color: #FEFCE8;
  border-color: var(--color-terracotta);
}

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

/* ==========================================================================
   FOOTER INSTITUTIONNEL (MEGA FOOTER)
   ========================================================================== */
.site-footer {
  background-color: var(--color-white);
  border-top: var(--border-thick) solid var(--border-color);
  margin-top: auto;
}

.footer-top {
  max-width: 1320px;
  margin: 0 auto;
  padding: 3.5rem 1.5rem;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 2.5rem;
}

.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-terracotta);
  margin-bottom: 1.25rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid #E2E8F0;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.footer-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-slate);
}

.footer-links a:hover {
  color: var(--color-terracotta);
  text-decoration: underline;
}

.footer-legal-baseline {
  background-color: var(--color-slate);
  color: #CBD5E1;
  font-size: 0.82rem;
  padding: 2rem 1.5rem;
  border-top: var(--border-width) solid #334155;
}

.baseline-inner {
  max-width: 1320px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.baseline-text {
  line-height: 1.6;
  max-width: 100%;
}

.baseline-links {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  align-items: center;
  border-top: 1px solid #334155;
  padding-top: 1rem;
}

.baseline-links a {
  color: #F8FAFC;
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.baseline-links a:hover {
  color: var(--color-terracotta-light);
}

/* ==========================================================================
   RESPONSIVE DESIGN & MOBILE RESET PROTOCOL
   ========================================================================== */
@media (max-width: 992px) {
  :root {
    --header-height: 140px;
  }
  
  .grid-4, .stats-matrix {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .grid-asym-1-2, .grid-asym-2-1 {
    grid-template-columns: 1fr;
  }
  
  .footer-top {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .mega-menu-panel {
    width: 600px;
    left: -100px;
  }
}

@media (max-width: 768px) {
  body {
    padding-top: 110px;
  }
  
  /* Mobile Reset Protocol Mandate */
  .editorial-card, .btn-cta, .stat-box, .reinvestment-clause-box {
    transform: none !important;
    box-shadow: 2px 2px 0px var(--border-color) !important;
  }
  
  .top-utility-strip {
    font-size: 0.7rem;
    padding: 0.35rem 1rem;
  }
  
  .top-utility-left {
    gap: 0.5rem;
  }
  
  .mobile-menu-toggle {
    display: inline-block;
  }
  
  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: var(--color-white);
    flex-direction: column;
    padding: 1rem 1.5rem;
    border-bottom: var(--border-width) solid var(--border-color);
    box-shadow: var(--shadow-block);
    gap: 0.75rem;
    align-items: flex-start;
  }
  
  .nav-menu.mobile-open {
    display: flex;
  }
  
  .mega-menu-panel {
    display: none !important;
    position: static;
    width: 100%;
    box-shadow: none;
    border: none;
    padding: 0.5rem 0;
    grid-template-columns: 1fr;
  }
  
  .has-mega-menu:hover .mega-menu-panel,
  .has-mega-menu.open .mega-menu-panel {
    display: flex !important;
    flex-direction: column;
  }
  
  .grid-2, .grid-3, .grid-4, .stats-matrix, .footer-top {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .container-boxed, .section-hero {
    padding: 1.5rem 1rem;
  }
}