/* ==========================================================================
   Pranaweb - Design System: "The Luminous Sanctuary"
   ========================================================================== */

   @import url('https://fonts.googleapis.com/css2?family=Newsreader:opsz,wght@6..72,300;6..72,400;6..72,500;6..72,600&family=Plus+Jakarta+Sans:wght@300;400;500;600&display=swap');

   :root {
  /* Background / Surfaces (Plus doux, plus lumineux) */
  --color-surface: #FAF9F6; /* Blanc cassé - Fond principal */
  --color-surface-container-lowest: #ffffff;
  --color-surface-container-low: #F5F0E8; /* Beige clair - Sections secondaires */
  --color-surface-container: #eae2d6;
  --color-surface-container-high: #ebdcd3;
  --color-surface-container-highest: #dcd2c6;

  /* Primary Accent (Identité principale - Vert doux) */
  --color-primary: #64B65A; 
  --color-primary-container: #8FCA86; /* Vert clair accent */
  --color-on-primary: #ffffff;
  
  /* Formes et Boutons (Accent bouton) */
  --color-brand-cta: #4A9442; /* Boutons CTA */
  --color-brand-text: #1E3320; /* Titres ou éléments de structure */
  
  /* Secondary & Brands */
  --color-secondary: #8FCA86;
  --color-secondary-container: #e6eedf;
  
  /* Text & Elements */
  --color-on-surface: #1E3320; /* Texte principal ajusté pour plus de douceur */
  --color-on-surface-variant: #4a5c4a;
  --color-outline: #8FCA86;
  --color-outline-variant: rgba(143, 178, 143, 0.2); /* Ghost Border doux */

  /* Typography */
  --font-editorial: 'Newsreader', serif;
  --font-functional: 'Plus Jakarta Sans', sans-serif;
  
  --text-display: clamp(2.5rem, 5vw, 4rem);
  --text-h1: clamp(2rem, 4vw, 3rem);
  --text-h2: clamp(1.5rem, 3vw, 2.25rem);
  --text-h3: clamp(1.25rem, 2vw, 1.5rem);
  --text-body-lg: 1.125rem;
  --text-body: 1rem;
  --text-small: 0.875rem;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 4rem;

  /* Elevation & Radius */
  --shadow-ambient: 0 40px 60px rgba(47, 63, 47, 0.05); /* Ombre adoucie, teintée vert/gris */
  --shadow-glass: 0 8px 32px rgba(47, 63, 47, 0.03);
  --radius-sm: 0.5rem;
  --radius-lg: 1.5rem;
  --radius-xl: 3rem; /* Formes organiques nature */
  --radius-pill: 9999px;
}
   
   /* ==========================================================================
      RESET & BASE
      ========================================================================== */
   
   * { box-sizing: border-box; margin: 0; padding: 0; }
   
   body {
     font-family: var(--font-functional);
     color: var(--color-on-surface);
     background-color: var(--color-surface);
     line-height: 1.6;
     -webkit-font-smoothing: antialiased;
   }
   
   h1, h2, h3, h4 {
     font-family: var(--font-editorial);
     color: var(--color-brand-text);
     font-weight: 500;
     line-height: 1.2;
   }
   
   h1 { font-size: var(--text-display); letter-spacing: -0.02em; margin-bottom: var(--spacing-sm); }
   h2 { font-size: var(--text-h1); margin-bottom: var(--spacing-md); }
   h3 { font-size: var(--text-h2); margin-bottom: var(--spacing-sm); }
   p  { font-size: var(--text-body-lg); color: var(--color-on-surface-variant); margin-bottom: var(--spacing-sm); }
   a  { text-decoration: none; color: inherit; transition: color 0.3s ease; }
   img { max-width: 100%; height: auto; display: block; }
   
   /* ==========================================================================
      LAYOUT & SECTIONS
      ========================================================================== */
   
   .container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 var(--spacing-md); }
   
   section { padding: var(--spacing-xl) 0; }
   
   /* Tonal Surfaces (No lines) */
   .surface-base { background-color: var(--color-surface); }
   .surface-low { background-color: var(--color-surface-container-low); }
   .surface-lowest { background-color: var(--color-surface-container-lowest); }
   .surface-high { background-color: var(--color-surface-container-high); }
   
   /* Glass Header */
   .header-glass {
     position: fixed;
     top: 0; left: 0; right: 0;
     z-index: 100;
     background: rgba(254, 249, 241, 0.75);
     backdrop-filter: blur(20px);
     -webkit-backdrop-filter: blur(20px);
     border-bottom: 1px solid rgba(194, 201, 189, 0.15); /* Ghost border */
     padding: var(--spacing-sm) 0;
   }
   
   .nav-container {
     display: flex;
     justify-content: space-between;
     align-items: center;
   }
   
   .logo {
     font-family: var(--font-editorial);
     font-size: var(--text-h3);
     color: var(--color-primary);
     font-weight: 600;
   }
   
   .nav-links {
     display: flex;
     gap: var(--spacing-md);
     align-items: center;
   }

   .nav-links a {
     font-size: var(--text-small);
     font-weight: 500;
     text-transform: uppercase;
     letter-spacing: 0.05em;
     color: var(--color-on-surface-variant);
   }

   .nav-links a:hover, .nav-links a.active {
     color: var(--color-primary);
   }
   
   /* Hero Section Asymmetrical Grid */
   .hero {
     min-height: 60vh;
     display: grid;
     grid-template-columns: 1fr 1fr;
     align-items: center;
     gap: var(--spacing-lg);
     padding-top: 20px;
   }

   .hero-content {
     max-width: 500px;
   }

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

   .hero-image {
     border-radius: var(--radius-lg);
     box-shadow: var(--shadow-ambient);
     width: 100%;
     height: auto;
     object-fit: contain;
     display: block;
   }

   /* ==========================================================================
      RESPONSIVE — Mobile First corrections
      ========================================================================== */

   /* Navigation hamburger */
   .nav-toggle {
     display: none;
     flex-direction: column;
     gap: 5px;
     background: none;
     border: none;
     cursor: pointer;
     padding: 0.25rem;
     z-index: 200;
   }
   .nav-toggle span {
     display: block;
     width: 24px;
     height: 2px;
     background: var(--color-on-surface);
     border-radius: 2px;
     transition: all 0.3s ease;
   }

   /* Hero */
   @media (max-width: 900px) {
     .hero {
       grid-template-columns: 1fr;
       padding-top: 120px;
       text-align: center;
       height: auto;
     }
     .hero-content { margin: 0 auto; }
     .hero-image { height: auto; border-radius: var(--radius-lg); }
     .hero-content div[style*="display:flex"] {
       flex-wrap: wrap;
       justify-content: center;
     }
   }

   /* About grid */
   @media (max-width: 900px) {
     .about-grid { grid-template-columns: 1fr; }
     .about-images-stack { height: 400px; margin-top: var(--spacing-md); }
   }

   /* Mobile global */
   @media (max-width: 768px) {

     /* Espacements réduits */
     :root {
       --spacing-xl: 2.5rem;
       --spacing-lg: 2rem;
       --spacing-md: 1.25rem;
     }

     /* Typo */
     p { font-size: var(--text-body); }
     h2 { font-size: clamp(1.3rem, 5vw, 1.8rem); }
     h3 { font-size: clamp(1.1rem, 4vw, 1.3rem); }

     /* Navigation hamburger */
     .nav-toggle { display: flex; }

     .nav-links {
       display: none;
       position: fixed;
       top: 0; left: 0; right: 0; bottom: 0;
       background: rgba(250,249,246,0.97);
       backdrop-filter: blur(12px);
       flex-direction: column;
       align-items: center;
       justify-content: center;
       gap: 2rem;
       z-index: 150;
     }

     .nav-links.open { display: flex; }

     .nav-links a {
       font-size: 1.1rem;
       letter-spacing: 0.04em;
     }

     /* Grille 3 colonnes → 1 colonne sur mobile */
     .grid-cards {
       grid-template-columns: 1fr !important;
     }

     /* Packs côte à côte → empilés */
     .about-grid {
       grid-template-columns: 1fr;
     }

     /* Boutons héro pleine largeur */
     .hero-content .btn {
       width: 100%;
       text-align: center;
     }

     /* Container padding réduit */
     .container { padding: 0 1rem; }

     /* Images stacked about */
     .about-images-stack { height: 280px; }
   }

   /* Très petits écrans */
   @media (max-width: 400px) {
     .btn { padding: 0.75rem 1.25rem; font-size: 0.8rem; }
   }

   /* Portrait + texte : empilé sur mobile */
   @media (max-width: 600px) {
     div[style*="display: flex"][style*="align-items: flex-start"] {
       flex-direction: column;
       align-items: center;
       text-align: center;
     }
     div[style*="display: flex"][style*="align-items: flex-start"] > div:last-child {
       text-align: left;
     }
   }


   
   /* Buttons */
   .btn {
     display: inline-flex;
     align-items: center;
     justify-content: center;
     padding: 0.8rem 1.75rem;
     border-radius: var(--radius-pill);
     font-size: var(--text-small);
     font-weight: 600;
     text-transform: uppercase;
     letter-spacing: 0.05em;
     cursor: pointer;
     transition: all 0.3s ease;
     border: none;
     margin-top: var(--spacing-sm);
   }
   
   .btn-primary {
     background: linear-gradient(135deg, var(--color-primary), var(--color-primary-container));
     color: var(--color-on-primary);
     box-shadow: var(--shadow-ambient);
   }
   
   .btn-primary:hover {
     filter: brightness(1.1);
     transform: translateY(-2px);
     box-shadow: 0 50px 70px rgba(29, 28, 23, 0.1);
   }
   
   .btn-secondary {
     background: transparent;
     color: var(--color-primary);
     border: 1px solid rgba(194, 201, 189, 0.4); /* Ghost Border variant for button */
   }
   
   .btn-secondary:hover {
     background: var(--color-surface-container-high);
   }
   
   /* Cards */
   .grid-cards {
     display: grid;
     grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
     gap: var(--spacing-md);
     margin-top: var(--spacing-md);
   }
   
   .card {
     background: var(--color-surface-container-lowest);
     padding: var(--spacing-md);
     border-radius: var(--radius-lg);
     transition: transform 0.3s ease, box-shadow 0.3s ease;
   }
   
   .card:hover {
     transform: translateY(-5px);
     box-shadow: var(--shadow-ambient);
   }
   
   .card-ghost {
     background: transparent;
     border: 1px solid rgba(194, 201, 189, 0.2);
   }
   
   /* Tags / Chips */
   .chip {
     display: inline-block;
     padding: 0.25rem 0.75rem;
     border-radius: var(--radius-pill);
     background: var(--color-secondary-container);
     color: var(--color-primary);
     font-size: var(--text-small);
     font-weight: 600;
     margin-bottom: var(--spacing-xs);
   }

   /* Inputs */
   .form-group {
     margin-bottom: var(--spacing-md);
   }

   .form-input {
     width: 100%;
     padding: 1rem 1.5rem;
     background: var(--color-surface-container-low);
     border: none;
     border-bottom: 2px solid transparent;
     border-radius: var(--radius-lg);
     font-family: var(--font-functional);
     font-size: var(--text-body);
     color: var(--color-on-surface);
     transition: all 0.3s ease;
   }

   .form-input:focus {
     outline: none;
     background: var(--color-surface-container-lowest);
     border-bottom: 2px solid var(--color-primary);
     box-shadow: var(--shadow-glass);
   }

   textarea.form-input {
     min-height: 150px;
     resize: vertical;
   }
   
   /* Utilities */
   .text-center { text-align: center; }
   .mt-md { margin-top: var(--spacing-md); }
   .mt-lg { margin-top: var(--spacing-lg); }
   .organic-mask { border-radius: 40% 60% 70% 30% / 40% 50% 60% 50%; }
   
   /* Overlap Image for About Section */
   .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: var(--spacing-md);
      align-items: center;
   }
   .about-images-stack { position: relative; height: 500px; }
   .about-pic-main { width: 70%; position: absolute; z-index: 2; top: 0; left: 0; border-radius: var(--radius-xl); box-shadow: var(--shadow-ambient);}
   .about-pic-sub { width: 60%; position: absolute; z-index: 1; bottom: 0; right: 0; border-radius: var(--radius-lg); opacity: 0.8;}
   @media (max-width: 900px) { .about-grid { grid-template-columns: 1fr; } .about-images-stack { height: 400px; margin-top: var(--spacing-md);} }
   
   /* Footer */
   .footer {
      background-color: var(--color-surface-container-high);
      padding: var(--spacing-lg) 0;
      text-align: center;
   }