/* ============================================================
   PROJET.CSS — Styles partagés par toutes les pages /projetdetail/*

   Chaque page doit définir SON image de hero via une variable CSS :
   <style>:root { --hero-bg: url('/photoprojet/NOM-DU-PROJET/3D/hero.webp'); }</style>
   ============================================================ */

:root {
  --main-color: #111;
  --bg-color: #fdfdfd;
  --accent-color: #eee;
  --hero-bg: none;
}

/* RESET */
* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'Outfit', sans-serif;
  background: var(--bg-color);
  color: var(--main-color);
  overflow-x: hidden;
}

/* ===== HERO IMAGE ===== */
.hero-image {
  position: relative;
  height: 100vh;
  overflow: hidden;
}
.parallax-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 130%;
  background: var(--hero-bg) center center / cover no-repeat;
  will-change: transform;
  z-index: 0;
}
.hero-text {
  position: relative;
  z-index: 1;
  color: #fff;
  text-align: center;
  top: 43%;
  transform: translateY(-50%);
  text-shadow: 0 0 10px rgba(0,0,0,0.4);
}
.hero-text h1 { font-size: 1.6rem; }
.hero-text p  { font-size: 1rem; }
@media (min-width: 1024px) {
  .hero-text h1 { font-size: 2rem; }
  .hero-text p  { font-size: 1.3rem; }
}

/* ===== MAIN LAYOUT ===== */
main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 4rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 3rem;
}

/* ===== KEY POINTS (Année, Type, Lieu…) ===== */
.key-points {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1.5rem;
  text-align: center;
}
.key-points div { background: #fff; padding: 1rem; border-radius: 8px; }
.key-points strong { display: block; margin-bottom: 0.3rem; }

/* ===== TEXTE DU PROJET ===== */
.project-text {
  max-width: 900px;
  margin: 0 auto;
  font-size: 1rem;
  line-height: 1.7;
}
.project-text h2 {
  text-align: center;
  margin-bottom: 1rem;
}
/* Variante "réduite" : <section class="project-text tight"> */
.project-text.tight h2 { margin-bottom: -1.5rem; }

/* ===== GALERIE / PLANS GRID ===== */
.plans-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.2rem;
  padding: 0 2rem;
}
.plans-grid img {
  width: 100%;
  border-radius: 10px;
  object-fit: cover;
  cursor: pointer;
  transition: transform 0.3s ease;
}
.plans-grid img:hover { transform: scale(1.03); }
@media (max-width: 600px) {
  .plans-grid { padding: 0 0.5rem; gap: 0.6rem; }
}

/* ===== BOUTON RETOUR ===== */
.voir-projets-btn {
  align-self: center;
  background: var(--accent-color);
  color: var(--main-color);
  padding: 0.8rem 1.6rem;
  text-decoration: none;
  border-radius: 30px;
  font-weight: 600;
  border: 1px solid #ccc;
  transition: all 0.3s ease;
}
.voir-projets-btn:hover { background: #ddd; }

/* ===== LIGHTBOX (visionneuse images) ===== */
.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.85);
  z-index: 2000;
  justify-content: center;
  align-items: center;
  backdrop-filter: blur(5px);
  overflow: hidden;
}
.lightbox img {
  max-width: 90%;
  max-height: 90%;
  border-radius: 8px;
  box-shadow: 0 0 30px rgba(0,0,0,0.6);
}
.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  z-index: 2001;
}
.lightbox-nav svg {
  width: 25px;
  height: 25px;
  stroke: white !important;
  color: white !important;
  stroke-width: 2;
  fill: none;
}
.lightbox-nav.prev { left: 2rem; }
.lightbox-nav.next { right: 2rem; }
.close-lightbox {
  position: absolute;
  top: 30px;
  right: 30px;
  cursor: pointer;
  z-index: 2001;
}
.close-lightbox svg {
  width: 32px;
  height: 32px;
  stroke: white !important;
  color: white !important;
}
@media (max-width: 600px) {
  #lightbox1 .lightbox-nav svg,
  .lightbox-nav svg {
    stroke: black !important;
    color: black !important;
  }
  #lightbox1 .close-lightbox svg,
  .close-lightbox svg {
    stroke: white !important;
    color: white !important;
  }
}