/* ==========================================================================
   Atelier Gaz&L Créa Bois — Styles
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Reset minimal
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

/* --------------------------------------------------------------------------
   Variables (Design System)
   -------------------------------------------------------------------------- */
:root {
  /* Couleurs */
  --color-cream: #FAF8F5;
  --color-wood: #8B4513;
  --color-wood-light: #A0522D;
  --color-charcoal: #1a1a1a;
  --color-charcoal-dark: #141414;
  --color-gold: #C9A962;
  --color-grey: #6B6B6B;

  /* Typographie */
  --font-heading: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Spacing (8px grid) */
  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 32px;
  --space-xl: 48px;
  --space-2xl: 64px;
  --space-3xl: 80px;
  --space-4xl: 128px;

  /* Transitions */
  --transition-fast: 200ms ease;
  --transition-base: 300ms ease;
  --transition-slow: 500ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Header height */
  --header-height: 80px;
  --header-height-scrolled: 64px;
}

/* --------------------------------------------------------------------------
   Base Typography
   -------------------------------------------------------------------------- */
body {
  font-family: var(--font-body);
  font-size: clamp(1rem, 1.5vw, 1.125rem);
  line-height: 1.7;
  color: var(--color-charcoal);
  background-color: var(--color-cream);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -0.01em;
  font-feature-settings: "liga" 1, "kern" 1;
}

h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
  font-size: clamp(1.25rem, 2vw, 1.5rem);
  line-height: 1.3;
}

p {
  margin-bottom: var(--space-md);
}

p:last-child {
  margin-bottom: 0;
}

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

a:hover {
  color: var(--color-wood-light);
}

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

address {
  font-style: normal;
}

/* --------------------------------------------------------------------------
   Accessibility
   -------------------------------------------------------------------------- */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-sm);
  background: var(--color-charcoal);
  color: var(--color-cream);
  padding: var(--space-sm) var(--space-md);
  z-index: 9999;
  border-radius: 4px;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--space-sm);
}

:focus-visible {
  outline: 2px solid var(--color-gold);
  outline-offset: 4px;
}

/* --------------------------------------------------------------------------
   Layout
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.section {
  padding: clamp(var(--space-3xl), 8vw, var(--space-4xl)) 0;
}

/* --------------------------------------------------------------------------
   Header
   -------------------------------------------------------------------------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-height);
  transition: all var(--transition-base);
}

.header.scrolled {
  height: var(--header-height-scrolled);
  background-color: rgba(250, 248, 245, 0.98);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.05);
}

@supports (backdrop-filter: blur(10px)) {
  .header.scrolled {
    background-color: rgba(250, 248, 245, 0.85);
    backdrop-filter: blur(10px);
  }
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.logo {
  font-family: var(--font-heading);
  font-size: clamp(1.25rem, 2vw, 1.5rem);
  font-weight: 500;
  color: var(--color-charcoal);
  letter-spacing: -0.01em;
}

.header:not(.scrolled) .logo {
  color: var(--color-cream);
}

/* Navigation */
.nav-menu {
  display: flex;
  gap: var(--space-lg);
  list-style: none;
}

.nav-menu a {
  position: relative;
  color: var(--color-charcoal);
  font-size: 0.9375rem;
  font-weight: 500;
  padding: var(--space-xs) 0;
}

.header:not(.scrolled) .nav-menu a {
  color: var(--color-cream);
}

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: currentColor;
  transition: width var(--transition-base);
}

.nav-menu a:hover::after {
  width: 100%;
}

/* Hamburger */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
  margin-right: calc(var(--space-sm) * -1);
}

.hamburger {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-charcoal);
  position: relative;
  transition: background var(--transition-fast);
}

.header:not(.scrolled) .hamburger {
  background: var(--color-cream);
}

.hamburger::before,
.hamburger::after {
  content: '';
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: inherit;
  transition: transform var(--transition-base);
}

.hamburger::before {
  top: -7px;
}

.hamburger::after {
  bottom: -7px;
}

/* Hamburger open state */
.nav-toggle[aria-expanded="true"] .hamburger {
  background: transparent;
}

.nav-toggle[aria-expanded="true"] .hamburger::before {
  transform: translateY(7px) rotate(45deg);
  background: var(--color-charcoal);
}

.nav-toggle[aria-expanded="true"] .hamburger::after {
  transform: translateY(-7px) rotate(-45deg);
  background: var(--color-charcoal);
}

/* --------------------------------------------------------------------------
   Hero
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--color-cream);
  overflow: hidden;
}

.hero-background {
  position: absolute;
  inset: 0;
  background-image: url('https://images.unsplash.com/photo-1558618666-fcd25c85cd64?w=1920&q=85');
  background-size: cover;
  background-position: center 40%;
  background-color: var(--color-charcoal);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.6));
}

.hero-content {
  position: relative;
  z-index: 1;
  padding: var(--space-md);
  max-width: 800px;
}

.hero-title {
  margin-bottom: var(--space-md);
  color: var(--color-cream);
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  opacity: 0.9;
  margin-bottom: var(--space-xl);
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  background: var(--color-wood);
  color: var(--color-cream);
  font-weight: 500;
  padding: var(--space-sm) var(--space-lg);
  border-radius: 4px;
  transition: all var(--transition-base);
}

.hero-cta:hover {
  background: var(--color-charcoal);
  color: var(--color-cream);
  padding-left: calc(var(--space-lg) + 4px);
  padding-right: calc(var(--space-lg) + 4px);
}

.cta-arrow {
  transition: transform var(--transition-base);
}

.hero-cta:hover .cta-arrow {
  transform: translateX(4px);
}

/* Scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: var(--space-lg);
  left: 50%;
  transform: translateX(-50%);
  background: none;
  border: none;
  color: var(--color-cream);
  cursor: pointer;
  opacity: 0.7;
  animation: bounce 2s infinite;
  z-index: 1;
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateX(-50%) translateY(0);
  }
  40% {
    transform: translateX(-50%) translateY(10px);
  }
  60% {
    transform: translateX(-50%) translateY(5px);
  }
}

/* --------------------------------------------------------------------------
   Section Services
   -------------------------------------------------------------------------- */
.section-services {
  background: var(--color-cream);
}

.section-title {
  text-align: center;
  margin-bottom: var(--space-md);
}

.section-intro {
  text-align: center;
  max-width: 600px;
  margin: 0 auto var(--space-2xl);
  color: var(--color-grey);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-xl);
}

/* Service cards */
.service-card {
  background: #fff;
  border-radius: 4px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  transition: all 400ms cubic-bezier(0.4, 0, 0.2, 1);
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(139, 69, 19, 0.15);
}

.card-image-wrapper {
  overflow: hidden;
  aspect-ratio: 4/3;
  background: var(--color-wood-light);
}

.card-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.9);
  transition: transform 400ms cubic-bezier(0.4, 0, 0.2, 1);
}

.service-card:hover .card-image {
  transform: scale(1.05);
}

.card-content {
  padding: var(--space-lg);
}

.card-title {
  margin-bottom: var(--space-sm);
  color: var(--color-charcoal);
}

.card-text {
  color: var(--color-grey);
  font-size: 0.9375rem;
  line-height: 1.6;
}

/* Stagger animation */
.service-card:nth-child(1) { transition-delay: 0ms; }
.service-card:nth-child(2) { transition-delay: 150ms; }
.service-card:nth-child(3) { transition-delay: 300ms; }

/* --------------------------------------------------------------------------
   Section Démarche
   -------------------------------------------------------------------------- */
.section-demarche {
  background: var(--color-cream);
}

.demarche-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: center;
  margin-bottom: var(--space-3xl);
}

.demarche-block:last-child {
  margin-bottom: 0;
}

.demarche-block--reverse {
  direction: rtl;
}

.demarche-block--reverse > * {
  direction: ltr;
}

.demarche-image-wrapper {
  overflow: hidden;
  border-radius: 4px;
  background: var(--color-wood-light);
}

.demarche-image {
  width: 100%;
  aspect-ratio: 16/10;
  object-fit: cover;
  filter: saturate(0.9);
}

.demarche-title {
  margin-bottom: var(--space-md);
  color: var(--color-charcoal);
}

.demarche-text {
  color: var(--color-grey);
}

/* --------------------------------------------------------------------------
   Section Contact
   -------------------------------------------------------------------------- */
.section-contact {
  background: var(--color-charcoal);
  color: var(--color-cream);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: start;
}

.contact-title {
  color: var(--color-cream);
  margin-bottom: var(--space-md);
}

.contact-text {
  opacity: 0.85;
}

.info-block {
  margin-bottom: var(--space-lg);
}

.info-label {
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  opacity: 0.6;
  margin-bottom: var(--space-sm);
  font-family: var(--font-body);
  font-weight: 500;
}

.info-address {
  font-size: 1.125rem;
  line-height: 1.6;
  margin-bottom: var(--space-md);
}

.map-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  color: var(--color-gold);
  font-weight: 500;
}

.map-link:hover {
  color: var(--color-cream);
}

.info-legal {
  opacity: 0.5;
  font-size: 0.875rem;
}

.info-legal p {
  margin-bottom: var(--space-xs);
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.footer {
  background: var(--color-charcoal-dark);
  color: var(--color-grey);
  padding: var(--space-xl) 0;
  text-align: center;
}

.footer-copyright {
  font-size: 0.875rem;
  margin-bottom: var(--space-xs);
}

.footer-legal {
  font-size: 0.8125rem;
  opacity: 0.7;
  margin-bottom: var(--space-sm);
}

.legal-link {
  color: var(--color-grey);
  font-size: 0.8125rem;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.legal-link:hover {
  color: var(--color-cream);
}

/* --------------------------------------------------------------------------
   Modal
   -------------------------------------------------------------------------- */
.modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
}

.modal[hidden] {
  display: none;
}

.modal.open {
  opacity: 1;
  visibility: visible;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
}

.modal-content {
  position: relative;
  background: var(--color-cream);
  color: var(--color-charcoal);
  padding: var(--space-xl);
  max-width: 600px;
  max-height: 80vh;
  overflow-y: auto;
  border-radius: 4px;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.25);
}

.modal-content h2 {
  margin-bottom: var(--space-lg);
  font-size: 1.75rem;
}

.modal-content h3 {
  margin-top: var(--space-lg);
  margin-bottom: var(--space-sm);
  font-size: 1.125rem;
  color: var(--color-wood);
}

.modal-content p {
  font-size: 0.9375rem;
  line-height: 1.6;
}

.modal-close {
  position: absolute;
  top: var(--space-sm);
  right: var(--space-sm);
  background: none;
  border: none;
  font-size: 2rem;
  line-height: 1;
  color: var(--color-grey);
  cursor: pointer;
  padding: var(--space-xs);
  transition: color var(--transition-fast);
}

.modal-close:hover {
  color: var(--color-charcoal);
}

/* --------------------------------------------------------------------------
   Reveal animations
   -------------------------------------------------------------------------- */
.reveal {
  opacity: 1;
  transform: translateY(0);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.js-enabled .reveal {
  opacity: 0;
  transform: translateY(30px);
}

.js-enabled .reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger for cards */
.js-enabled .service-card.reveal:nth-child(1) { transition-delay: 0ms; }
.js-enabled .service-card.reveal:nth-child(2) { transition-delay: 150ms; }
.js-enabled .service-card.reveal:nth-child(3) { transition-delay: 300ms; }

/* Démarche reveal lateral */
.js-enabled .demarche-block.reveal {
  transform: translateX(-30px);
}

.js-enabled .demarche-block--reverse.reveal {
  transform: translateX(30px);
}

.js-enabled .demarche-block.reveal.visible {
  transform: translateX(0);
}

/* --------------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .demarche-block {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .demarche-block--reverse {
    direction: ltr;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 64px;
    --header-height-scrolled: 56px;
  }

  .nav-toggle {
    display: block;
  }

  .nav-menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-xl);
    background: var(--color-cream);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base);
  }

  .nav-menu.open {
    opacity: 1;
    visibility: visible;
  }

  .nav-menu a {
    color: var(--color-charcoal);
    font-size: 1.5rem;
  }

  .header:not(.scrolled) .nav-menu a {
    color: var(--color-charcoal);
  }

  .hero-cta {
    width: 100%;
    justify-content: center;
    max-width: 300px;
  }

  .services-grid {
    grid-template-columns: 1fr;
  }

  .modal-content {
    padding: var(--space-lg);
    max-height: 90vh;
  }
}

@media (max-width: 480px) {
  .hero-content {
    padding: var(--space-sm);
  }

  .scroll-indicator {
    display: none;
  }
}

/* --------------------------------------------------------------------------
   Print
   -------------------------------------------------------------------------- */
@media print {
  .header,
  .scroll-indicator,
  .hero-cta,
  .modal {
    display: none;
  }

  .hero {
    min-height: auto;
    padding: var(--space-lg);
  }

  .hero-background,
  .hero-overlay {
    display: none;
  }

  .hero-title,
  .hero-subtitle {
    color: var(--color-charcoal);
  }

  .section-contact {
    background: var(--color-cream);
    color: var(--color-charcoal);
  }

  .contact-title {
    color: var(--color-charcoal);
  }
}