:root {
  --bg-color: #f4f4f4;
  --panel-bg: #e5e5e5;
  --text-color: #1a1a1a;
  --text-muted: #666666;
  --accent-color: #ff5a00;
  --accent-hover: #e04f00;
  --border-color: #1a1a1a;
  --font-title: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
  
  --border-width: 3px;
  --shadow-offset: 6px;
  --transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --radius: 0px; /* Brutalist sharp edges */
}

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

body {
  background-color: var(--bg-color);
  color: var(--text-color);
  font-family: var(--font-body);
  line-height: 1.6;
  padding-top: 80px; /* Nav bar spacing */
  overflow-x: hidden;
}

/* Base Headings */
h1, h2, h3, h4 {
  font-family: var(--font-title);
  text-transform: uppercase;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
}

h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  line-height: 0.95;
}

h2 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  border-bottom: var(--border-width) solid var(--border-color);
  padding-bottom: 0.5rem;
  margin-bottom: 2rem;
}

p {
  font-size: 1.05rem;
  max-width: 70ch;
  margin-bottom: 1.5rem;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}

/* Header & Navigation */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 80px;
  background-color: var(--bg-color);
  border-bottom: var(--border-width) solid var(--border-color);
  z-index: 1000;
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  height: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 2rem;
}

.logo {
  font-family: var(--font-title);
  font-size: 1.8rem;
  font-weight: 900;
  text-transform: uppercase;
  color: var(--text-color);
  border: var(--border-width) solid var(--border-color);
  padding: 0.2rem 0.8rem;
  background-color: var(--accent-color);
  box-shadow: 4px 4px 0 var(--border-color);
  transition: var(--transition);
}

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

.logo span {
  color: #ffffff;
}

.nav-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
}

.nav-links a {
  font-family: var(--font-title);
  font-weight: 700;
  text-transform: uppercase;
  font-size: 1.1rem;
  padding: 0.4rem 0.8rem;
  border: var(--border-width) solid transparent;
}

.nav-links a:hover,
.nav-links a.active {
  border-color: var(--border-color);
  background-color: var(--panel-bg);
  box-shadow: 3px 3px 0 var(--border-color);
  transform: translate(-3px, -3px);
}

/* Hero Section */
.hero {
  padding: 4rem 2rem 6rem;
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

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

.hero-subtitle {
  font-family: var(--font-title);
  font-size: 1.4rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--accent-color);
  margin-bottom: 1rem;
}

.hero-image-container {
  border: var(--border-width) solid var(--border-color);
  box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--border-color);
  background-color: var(--panel-bg);
  margin: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* Le visuel est fourni en 4:3 : le conteneur adopte le meme ratio, donc aucun recadrage
   ni ecrasement, du grand ecran au mobile. object-fit couvre les arrondis de sous-pixel. */
.hero-image-container img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  object-position: center;
}

.hero-image-caption {
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--text-muted);
  border-top: var(--border-width) solid var(--border-color);
  padding: 0.9rem 1.2rem;
}

/* Brutalist Buttons */
.btn {
  display: inline-block;
  font-family: var(--font-title);
  font-weight: 800;
  font-size: 1.2rem;
  text-transform: uppercase;
  padding: 0.8rem 2rem;
  border: var(--border-width) solid var(--border-color);
  background-color: var(--accent-color);
  color: #ffffff;
  box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--border-color);
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
}

.btn:hover {
  box-shadow: 0 0 0 var(--border-color);
  transform: translate(var(--shadow-offset), var(--shadow-offset));
}

.btn-secondary {
  background-color: var(--panel-bg);
  color: var(--text-color);
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin-top: 2rem;
}

/* Sections */
section.main-section {
  padding: 5rem 2rem;
  border-top: var(--border-width) solid var(--border-color);
}

.container {
  max-width: 1400px;
  margin: 0 auto;
}

/* Grids & Cards */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(350px, 100%), 1fr));
  gap: 3rem;
}

.brut-card {
  border: var(--border-width) solid var(--border-color);
  background-color: var(--bg-color);
  padding: 2rem;
  box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--border-color);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.brut-card:hover {
  box-shadow: 0 0 0 var(--border-color);
  transform: translate(var(--shadow-offset), var(--shadow-offset));
}

.card-num {
  font-family: var(--font-title);
  font-size: 3rem;
  font-weight: 900;
  color: var(--accent-color);
  line-height: 1;
  margin-bottom: 1.5rem;
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 0.5rem;
}

/* Portfolio Filter / Gallery */
.gallery-filters {
  display: flex;
  gap: 1rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

.filter-btn {
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 1rem;
  text-transform: uppercase;
  padding: 0.5rem 1.2rem;
  border: var(--border-width) solid var(--border-color);
  background-color: var(--panel-bg);
  cursor: pointer;
  box-shadow: 3px 3px 0 var(--border-color);
  transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
  background-color: var(--accent-color);
  color: #ffffff;
  box-shadow: 0 0 0 var(--border-color);
  transform: translate(3px, 3px);
}

/* Project Items */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(400px, 100%), 1fr));
  gap: 3rem;
}

.project-item {
  border: var(--border-width) solid var(--border-color);
  background-color: var(--panel-bg);
  box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--border-color);
  padding: 1.5rem;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.project-item:hover {
  box-shadow: 0 0 0 var(--border-color);
  transform: translate(var(--shadow-offset), var(--shadow-offset));
}

.project-tag {
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 0.9rem;
  text-transform: uppercase;
  color: var(--accent-color);
  margin-bottom: 0.5rem;
}

/* Forms */
.form-container {
  max-width: 700px;
  margin: 0 auto;
  border: var(--border-width) solid var(--border-color);
  padding: 3rem;
  background-color: var(--panel-bg);
  box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--border-color);
}

.form-group {
  margin-bottom: 2rem;
  display: flex;
  flex-direction: column;
}

.form-label {
  font-family: var(--font-title);
  font-weight: 700;
  text-transform: uppercase;
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.form-input {
  width: 100%;
  padding: 0.8rem 1rem;
  font-size: 1.05rem;
  border: var(--border-width) solid var(--border-color);
  background-color: var(--bg-color);
  color: var(--text-color);
  font-family: var(--font-body);
  transition: var(--transition);
}

.form-input:focus {
  outline: none;
  background-color: #ffffff;
  border-color: var(--accent-color);
  box-shadow: 4px 4px 0 var(--border-color);
}

.form-state {
  margin-top: 1.5rem;
  padding: 1rem;
  font-weight: 700;
  border: var(--border-width) solid var(--border-color);
  display: none;
  text-transform: uppercase;
  font-family: var(--font-title);
}

.form-state.success {
  background-color: #10b981;
  color: white;
  display: block;
}

.form-state.error {
  background-color: #ef4444;
  color: white;
  display: block;
}

.form-state.loading {
  background-color: var(--panel-bg);
  color: var(--text-color);
  display: block;
}

/* Footer */
footer {
  border-top: var(--border-width) solid var(--border-color);
  background-color: var(--text-color);
  color: var(--panel-bg);
  padding: 4rem 2rem 2rem;
}

.footer-container {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 4rem;
  margin-bottom: 4rem;
}

.footer-brand h3 {
  color: var(--accent-color);
  font-size: 2rem;
  margin-bottom: 1.5rem;
}

.footer-links h4,
.footer-contact h4 {
  text-transform: uppercase;
  font-family: var(--font-title);
  color: #ffffff;
  font-size: 1.2rem;
  margin-bottom: 1.5rem;
  border-left: var(--border-width) solid var(--accent-color);
  padding-left: 0.8rem;
}

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

.footer-links li {
  margin-bottom: 0.8rem;
}

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

.footer-bottom {
  max-width: 1400px;
  margin: 0 auto;
  border-top: 1px solid #333333;
  padding-top: 2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  align-items: center;
  font-size: 0.9rem;
  color: #888888;
}

.footer-bottom-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.footer-bottom-links a {
  color: #888888;
}

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

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  border: var(--border-width) solid var(--border-color);
  background: var(--panel-bg);
  padding: 0.6rem;
  cursor: pointer;
  box-shadow: 3px 3px 0 var(--border-color);
}

.menu-toggle span {
  display: block;
  width: 25px;
  height: 3px;
  background-color: var(--text-color);
}

/* Responsive */
@media (max-width: 1024px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 80px;
    left: 0;
    width: 100%;
    background-color: var(--bg-color);
    border-bottom: var(--border-width) solid var(--border-color);
    flex-direction: column;
    padding: 2rem;
    gap: 1.5rem;
    box-shadow: 0 10px 10px rgba(0,0,0,0.1);
  }
  
  .nav-links.active {
    display: flex;
  }
  
  .menu-toggle {
    display: flex;
  }
  
  .footer-container {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
}

/* ===== Visuels des fiches projet =====
   Illustrations d'ambiance fournies en 16:9. Le conteneur reprend exactement ce ratio :
   object-fit: cover garantit l'absence de deformation si un futur visuel arrive en ratio different. */
.project-visual {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  object-position: center;
  margin-bottom: 1.2rem;
  border: 2px solid var(--border-color);
  background-color: var(--bg-color);
}

.project-status {
  font-family: var(--font-title);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--text-muted);
  border-top: 2px solid var(--border-color);
  padding-top: 0.8rem;
}

/* Pages légales : les titres de section sont bien des h2 (hiérarchie Hn correcte),
   mais conservent l'échelle visuelle d'origine pour ne pas alourdir ces pages. */
.legal-section h2 {
  font-size: 1.4rem;
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 0.4rem;
  margin-bottom: 1rem;
}