:root {
  --font-serif: 'Playfair Display', serif;
  --font-sans: 'Inter', sans-serif;
  
  --bg-color: #fdfdfd;
  --bg-alt: #f8f8f8;
  --text-color: #1a1a1a;
  --text-light: #666;
  --accent-color: #000;
  
  --container-width: 1200px;
  --section-padding: 100px 0;
  
  --transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

ul {
  list-style: none;
}

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

.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 40px;
}

.section {
  padding: var(--section-padding);
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 1.2s ease, transform 1.2s cubic-bezier(0.165, 0.84, 0.44, 1);
}

.section.active {
  opacity: 1;
  transform: translateY(0);
}

.section-title {
  font-family: var(--font-serif);
  font-size: 42px;
  font-weight: 400;
  margin-bottom: 50px;
  text-align: center;
  position: relative;
}

.section-title::after {
  content: '';
  display: block;
  width: 40px;
  height: 1px;
  background-color: var(--accent-color);
  margin: 20px auto 0;
}

.bg-alt {
  background-color: var(--bg-alt);
}

/* Header */
.header {
  height: 100px;
  display: flex;
  align-items: center;
  position: fixed;
  top: 0;
  width: 100%;
  background-color: rgba(253, 253, 253, 0.9);
  backdrop-filter: blur(10px);
  z-index: 1000;
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.logo-link {
  font-family: var(--font-serif);
  font-size: 20px;
  letter-spacing: 2px;
  font-weight: 700;
}

.nav-links {
  display: flex;
  gap: 40px;
}

.nav-links li a {
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 500;
  opacity: 0.6;
}

.nav-links li a:hover {
  opacity: 1;
}

/* Hero */
.hero {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background-color: var(--bg-alt);
  padding-top: 100px;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: 64px;
  font-weight: 400;
  margin-bottom: 20px;
  line-height: 1.2;
}

.hero-subtitle {
  font-size: 18px;
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto 40px;
  font-weight: 300;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 16px 36px;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 2px;
  font-weight: 600;
  border-radius: 0;
  transition: var(--transition);
  cursor: pointer;
}

.btn-outline {
  border: 1px solid var(--accent-color);
  color: var(--accent-color);
}

.btn-outline:hover {
  background-color: var(--accent-color);
  color: var(--bg-color);
}

.btn-primary {
  background-color: var(--accent-color);
  color: var(--bg-color);
}

/* Gallery */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 30px;
}

.gallery-item {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background-color: #eee;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
  filter: grayscale(20%);
}

.gallery-item:hover img {
  transform: scale(1.05);
  filter: grayscale(0%);
}

/* Biography */
.bio-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.bio-text p {
  margin-bottom: 20px;
  font-size: 17px;
  color: var(--text-light);
  text-align: justify;
}

.img-fluid {
  width: 100%;
  height: auto;
}

.rounded {
  border-radius: 4px;
}

.shadow {
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
}

/* Collaborateur */
.collaborateur-intro {
  max-width: 800px;
  margin: 0 auto 40px;
  text-align: center;
}

.bio-intro {
  font-size: 20px;
  font-style: italic;
  color: var(--text-color);
  line-height: 1.4;
}

.bio-text-full {
  max-width: 800px;
  margin: 50px auto 0;
  text-align: center;
}

.bio-text-full p {
  font-size: 18px;
  color: var(--text-light);
  line-height: 1.6;
}

.bio-text-full strong {
  color: var(--accent-color);
  font-weight: 600;
}

/* Buy section */
.buy-links {
  margin-top: 30px;
}

/* Contact */
.contact-location {
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--text-light);
  margin-bottom: 30px;
}

/* Footer */
.footer {
  padding: 40px 0;
  text-align: center;
  border-top: 1px solid rgba(0, 0, 0, 0.05);
  font-size: 12px;
  color: var(--text-light);
  letter-spacing: 1px;
}

/* Responsive */
@media (max-width: 968px) {
  .hero-title {
    font-size: 48px;
  }
  
  .bio-container {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .section-padding {
    padding: 60px 0;
  }
}

@media (max-width: 600px) {
  .nav-links {
    display: none;
  }
  
  .hero-title {
    font-size: 36px;
  }
  
  .gallery-grid {
    grid-template-columns: 1fr;
  }
  
  .container {
    padding: 0 20px;
  }
}