/* ==========================================================================
   L'ATELIER MB EVENTS — DESIGN SYSTEM
   Esprit « maison de luxe » inspiré du langage Dior, reconstruit proprement.
   Principes : beaucoup de blanc, serif élégant, labels capitales espacées,
   photos plein cadre, palette noir / ivoire + accent champagne.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. DESIGN TOKENS (variables)
   -------------------------------------------------------------------------- */
:root {
  /* — Couleurs — */
  --c-noir:        #0a0a0a;   /* noir profond (texte, fonds sombres)        */
  --c-noir-doux:   #1c1a17;   /* noir chaud                                  */
  --c-blanc:       #ffffff;
  --c-ivoire:      #f7f2ec;   /* fond chaud principal                        */
  --c-sable:       #ebe3d7;   /* séparateurs, fonds alternés                 */
  --c-taupe:       #8a7e70;   /* texte secondaire                            */
  --c-champagne:   #b29462;   /* accent or doux (filets, hover, détails)     */
  --c-champagne-cl:#c8ad84;
  --c-rose:        #d8b9ac;   /* touche féminine, à doser avec parcimonie    */

  /* sémantique */
  --bg:            var(--c-ivoire);
  --bg-alt:        var(--c-blanc);
  --text:          var(--c-noir);
  --text-soft:     var(--c-taupe);
  --accent:        var(--c-champagne);
  --line:          rgba(10, 10, 10, 0.12);

  /* — Typographie — */
  --font-serif: "Cormorant Garamond", "Times New Roman", serif;
  --font-sans:  "Jost", system-ui, -apple-system, "Segoe UI", sans-serif;

  --fs-hero:  clamp(3rem, 8vw, 6.5rem);
  --fs-h1:    clamp(2.2rem, 5.2vw, 4rem);
  --fs-h2:    clamp(1.8rem, 3.6vw, 2.8rem);
  --fs-h3:    clamp(1.25rem, 2vw, 1.6rem);
  --fs-body:  clamp(1rem, 1.05vw, 1.08rem);
  --fs-small: 0.85rem;
  --fs-label: 0.72rem;

  --ls-label: 0.24em;   /* espacement des labels capitales */
  --ls-wide:  0.14em;

  /* — Rythme & layout — */
  --space-section: clamp(5rem, 11vw, 9.5rem);
  --space-lg: clamp(2.5rem, 5vw, 4.5rem);
  --space-md: 1.75rem;
  --space-sm: 1rem;
  --maxw: 1320px;
  --maxw-text: 62ch;

  /* — Transitions — */
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --t-fast: 0.25s var(--ease);
  --t-slow: 0.6s var(--ease);
}

/* --------------------------------------------------------------------------
   2. RESET & BASE
   -------------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  font-weight: 300;
  font-size: var(--fs-body);
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

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

a { color: inherit; text-decoration: none; }

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 500;
  line-height: 1.08;
  letter-spacing: -0.01em;
}

::selection { background: var(--c-champagne); color: var(--c-blanc); }

/* --------------------------------------------------------------------------
   3. UTILITAIRES TYPO
   -------------------------------------------------------------------------- */
.label {
  font-family: var(--font-sans);
  font-size: var(--fs-label);
  font-weight: 400;
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
  color: var(--text-soft);
}
.label--accent { color: var(--accent); }

.display { font-size: var(--fs-hero); font-weight: 400; }
.h1 { font-size: var(--fs-h1); }
.h2 { font-size: var(--fs-h2); }
.h3 { font-size: var(--fs-h3); }

.lead {
  font-size: clamp(1.1rem, 1.6vw, 1.35rem);
  font-weight: 300;
  color: var(--text-soft);
  max-width: var(--maxw-text);
}

.text-italic { font-style: italic; }
.text-serif  { font-family: var(--font-serif); }

/* --------------------------------------------------------------------------
   4. LAYOUT
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 5vw, 4rem);
}

.section { padding-block: var(--space-section); }
.section--tight { padding-block: var(--space-lg); }
.section--dark { background: var(--c-noir); color: var(--c-blanc); }
.section--dark .label,
.section--dark .lead { color: rgba(255,255,255,0.7); }
.section--alt { background: var(--bg-alt); }

.center { text-align: center; }
.mx-auto { margin-inline: auto; }

.divider {
  width: 56px; height: 1px; background: var(--accent);
  border: 0; margin: var(--space-md) 0;
}
.center .divider { margin-inline: auto; }

/* --------------------------------------------------------------------------
   5. BOUTONS
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.75em;
  font-family: var(--font-sans);
  font-size: var(--fs-label);
  font-weight: 400;
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
  padding: 1.15em 2.4em;
  border: 1px solid var(--c-noir);
  background: transparent;
  color: var(--c-noir);
  cursor: pointer;
  transition: background var(--t-fast), color var(--t-fast), border-color var(--t-fast);
}
.btn:hover { background: var(--c-noir); color: var(--c-blanc); }

.btn--solid { background: var(--c-noir); color: var(--c-blanc); }
.btn--solid:hover { background: var(--accent); border-color: var(--accent); color: var(--c-noir); }

.btn--light { border-color: var(--c-blanc); color: var(--c-blanc); }
.btn--light:hover { background: var(--c-blanc); color: var(--c-noir); }

/* lien souligné animé */
.link-underline {
  position: relative;
  font-family: var(--font-sans);
  font-size: var(--fs-label);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  padding-bottom: 2px;
}
.link-underline::after {
  content: ""; position: absolute; left: 0; bottom: 0;
  width: 100%; height: 1px; background: currentColor;
  transform: scaleX(0); transform-origin: right;
  transition: transform var(--t-fast);
}
.link-underline:hover::after { transform: scaleX(1); transform-origin: left; }

/* --------------------------------------------------------------------------
   6. HEADER / NAVIGATION (minimal, transparent sur le hero)
   -------------------------------------------------------------------------- */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.4rem clamp(1.25rem, 5vw, 4rem);
  transition: background var(--t-slow), padding var(--t-slow), box-shadow var(--t-slow), color var(--t-slow);
  color: var(--c-blanc);
}
.site-header.is-scrolled {
  background: var(--c-blanc);
  color: var(--c-noir);
  padding-block: 0.9rem;
  box-shadow: 0 1px 0 var(--line);
}
.site-header__brand {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  letter-spacing: 0.04em;
  line-height: 1;
}
.site-header__brand small {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.55rem;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  margin-top: 0.35rem;
  opacity: 0.8;
}
.site-nav { display: flex; align-items: center; gap: clamp(1.5rem, 3vw, 2.75rem); }
.site-nav a {
  font-family: var(--font-sans);
  font-size: var(--fs-label);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  position: relative; padding-bottom: 3px;
}
.site-nav a::after {
  content:""; position:absolute; left:0; bottom:0; height:1px; width:100%;
  background: currentColor; transform: scaleX(0); transform-origin:right;
  transition: transform var(--t-fast);
}
.site-nav a:hover::after, .site-nav a[aria-current="page"]::after { transform: scaleX(1); transform-origin:left; }

.nav-toggle { display: none; background: none; border: 0; color: inherit; cursor: pointer; padding: 0.5rem; z-index: 101; }
.nav-toggle span { display:block; width:26px; height:1px; background: currentColor; margin: 6px 0; transition: var(--t-fast); }

/* --------------------------------------------------------------------------
   7. HERO
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  place-items: center;
  text-align: center;
  color: var(--c-blanc);
  overflow: hidden;
}
.hero__media { position: absolute; inset: 0; z-index: -2; }
.hero__media img, .hero__media video { width: 100%; height: 100%; object-fit: cover; }
.hero::after { /* voile léger : assez pour lire le texte, sans masquer les parfums */
  content:""; position:absolute; inset:0; z-index:-1;
  background:
    radial-gradient(120% 75% at 50% 38%, rgba(0,0,0,0.42) 0%, rgba(0,0,0,0.12) 55%, transparent 75%),
    linear-gradient(180deg, rgba(0,0,0,0.28), rgba(0,0,0,0.05) 45%, rgba(0,0,0,0.35));
}
.hero__inner { max-width: 60rem; padding-inline: 1.5rem; }
.hero__title { font-size: var(--fs-hero); font-weight: 400; text-shadow: 0 2px 30px rgba(0,0,0,0.45); }
.hero .label, .hero__sub { text-shadow: 0 1px 16px rgba(0,0,0,0.5); }
.hero .label { color: rgba(255,255,255,0.85); }
.hero__sub { margin-top: 1.5rem; color: rgba(255,255,255,0.9); font-weight: 300; }
.hero__cta { margin-top: var(--space-md); display:flex; gap:1rem; justify-content:center; flex-wrap:wrap; }

.scroll-hint {
  position: absolute; bottom: 2rem; left: 50%; transform: translateX(-50%);
  font-size: var(--fs-label); letter-spacing: var(--ls-label); text-transform: uppercase;
  color: rgba(255,255,255,0.8);
}
.scroll-hint::after {
  content:""; display:block; width:1px; height:48px; margin: 0.75rem auto 0;
  background: linear-gradient(rgba(255,255,255,0.8), transparent);
  animation: scrollPulse 2.4s var(--ease) infinite;
}
@keyframes scrollPulse { 0%{transform:scaleY(0);transform-origin:top} 40%{transform:scaleY(1);transform-origin:top} 60%{transform:scaleY(1);transform-origin:bottom} 100%{transform:scaleY(0);transform-origin:bottom} }

/* --------------------------------------------------------------------------
   8. SECTION INTRO / EDITO
   -------------------------------------------------------------------------- */
.intro { display: grid; gap: var(--space-lg); }
.intro__title { font-size: var(--fs-h1); max-width: 24ch; }
.intro__text  { max-width: var(--maxw-text); color: var(--text-soft); }
@media (min-width: 860px) {
  .intro { grid-template-columns: 1fr 1fr; align-items: end; }
}

/* --------------------------------------------------------------------------
   9. GRILLE DE SERVICES (cartes plein cadre)
   -------------------------------------------------------------------------- */
.services-grid {
  display: grid; gap: clamp(0.5rem, 1.5vw, 1rem);
  grid-template-columns: 1fr;
}
@media (min-width: 720px)  { .services-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1080px) { .services-grid { grid-template-columns: repeat(3, 1fr); } }

.service-card {
  position: relative; aspect-ratio: 3 / 4; overflow: hidden;
  display: flex; align-items: flex-end;
  color: var(--c-blanc);
  isolation: isolate;
}
.service-card__img { position:absolute; inset:0; z-index:-2; }
.service-card__img img { width:100%; height:100%; object-fit: cover; transition: transform 1.2s var(--ease); }
.service-card::after {
  content:""; position:absolute; inset:0; z-index:-1;
  background: linear-gradient(180deg, transparent 35%, rgba(0,0,0,0.7));
  transition: background var(--t-slow);
}
.service-card:hover .service-card__img img { transform: scale(1.06); }
.service-card:hover::after { background: linear-gradient(180deg, rgba(0,0,0,0.15), rgba(0,0,0,0.78)); }
.service-card__body { padding: clamp(1.5rem, 3vw, 2.5rem); width: 100%; }
.service-card__title { font-size: var(--fs-h3); font-weight: 500; }
.service-card__desc { font-size: var(--fs-small); color: rgba(255,255,255,0.85); margin-top: 0.4rem; max-width: 34ch; }
.service-card__more { margin-top: 1rem; display:inline-block; opacity: 0; transform: translateY(8px); transition: var(--t-fast); }
.service-card:hover .service-card__more { opacity: 1; transform: none; }

/* --------------------------------------------------------------------------
   10. SECTION IMAGE + TEXTE (alternance)
   -------------------------------------------------------------------------- */
.feature { display: grid; gap: var(--space-lg); align-items: center; }
.feature__media { aspect-ratio: 4/5; overflow:hidden; }
.feature__media img { width:100%; height:100%; object-fit: cover; }
@media (min-width: 860px) {
  .feature { grid-template-columns: 1fr 1fr; gap: clamp(3rem, 6vw, 6rem); }
  .feature--reverse .feature__media { order: 2; }
}
.feature__title { font-size: var(--fs-h2); margin-bottom: var(--space-sm); }

/* — étapes numérotées (le concept / l'expérience) — */
.steps { display: grid; gap: var(--space-lg); }
@media (min-width: 760px) { .steps { grid-template-columns: repeat(3, 1fr); } }
.step { border-top: 1px solid var(--line); padding-top: var(--space-md); }
.step__num {
  font-family: var(--font-serif); font-size: 2.5rem; color: var(--accent);
  line-height: 1; display:block; margin-bottom: 1rem;
}
.step__title { font-size: var(--fs-h3); margin-bottom: 0.5rem; }
.step__text { color: var(--text-soft); font-size: var(--fs-small); }

/* --------------------------------------------------------------------------
   11. CITATION / BANNIÈRE
   -------------------------------------------------------------------------- */
.quote { text-align:center; max-width: 40ch; margin-inline:auto; }
.quote p { font-family: var(--font-serif); font-style: italic; font-size: clamp(1.6rem, 3.5vw, 2.6rem); line-height: 1.25; }
.quote cite { display:block; margin-top: var(--space-md); font-style: normal; }

/* --------------------------------------------------------------------------
   12. FAQ (accordéon)
   -------------------------------------------------------------------------- */
.faq { max-width: 56rem; margin-inline: auto; }
.faq__item { border-bottom: 1px solid var(--line); }
.faq__item summary {
  list-style: none; cursor: pointer; padding: var(--space-md) 0;
  display:flex; justify-content: space-between; align-items:center; gap: 1rem;
  font-family: var(--font-serif); font-size: var(--fs-h3); font-weight: 500;
}
.faq__item summary::-webkit-details-marker { display:none; }
.faq__item summary::after { content:"+"; font-family: var(--font-sans); font-weight: 300; font-size: 1.5rem; transition: transform var(--t-fast); }
.faq__item[open] summary::after { transform: rotate(45deg); }
.faq__answer { padding-bottom: var(--space-md); color: var(--text-soft); max-width: var(--maxw-text); }

/* --------------------------------------------------------------------------
   13. FORMULAIRE DE CONTACT
   -------------------------------------------------------------------------- */
.form { display: grid; gap: var(--space-md); max-width: 46rem; }
.form__row { display:grid; gap: var(--space-md); }
@media (min-width: 640px) { .form__row--2 { grid-template-columns: 1fr 1fr; } }
.field { display: grid; gap: 0.5rem; }
.field label { font-size: var(--fs-label); letter-spacing: var(--ls-wide); text-transform: uppercase; color: var(--text-soft); }
.field input, .field select, .field textarea {
  font-family: var(--font-sans); font-size: var(--fs-body); font-weight: 300;
  padding: 0.95em 1em; border: 1px solid var(--line); background: var(--c-blanc); color: var(--text);
  border-radius: 0; transition: border-color var(--t-fast);
}
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--accent); }
.field textarea { resize: vertical; min-height: 9rem; }
.form .help { font-size: var(--fs-small); color: var(--text-soft); }
.form-error { color: #a13a2c; font-size: var(--fs-small); }
.alert { padding: 1.1rem 1.4rem; border: 1px solid var(--line); background: var(--c-blanc); font-size: var(--fs-small); }
.alert--success { border-color: var(--accent); }

/* bandeau coordonnées rapides */
.contact-strip { display:grid; gap: var(--space-lg); }
@media (min-width: 760px) { .contact-strip { grid-template-columns: repeat(3,1fr); } }
.contact-strip a:hover { color: var(--accent); }

/* --------------------------------------------------------------------------
   14. FOOTER
   -------------------------------------------------------------------------- */
.site-footer { background: var(--c-noir); color: rgba(255,255,255,0.78); }
.site-footer a:hover { color: var(--c-blanc); }
.footer-grid { display:grid; gap: var(--space-lg); padding-block: var(--space-lg); }
@media (min-width: 760px) { .footer-grid { grid-template-columns: 2fr 1fr 1fr; } }
.footer-brand { font-family: var(--font-serif); font-size: 1.8rem; color: var(--c-blanc); }
.footer-col h4 { font-family: var(--font-sans); font-size: var(--fs-label); letter-spacing: var(--ls-label); text-transform: uppercase; color: rgba(255,255,255,0.55); margin-bottom: 1.25rem; font-weight: 400; }
.footer-col ul { list-style:none; padding:0; display:grid; gap:0.7rem; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.12); padding-block: 1.75rem; display:flex; flex-wrap:wrap; gap:1rem; justify-content:space-between; font-size: var(--fs-small); color: rgba(255,255,255,0.5); }

/* Signature Snoussi IA Dev Consulting */
.site-signature { display:inline-flex; align-items:center; gap:0.4em; }
.site-signature a { color: var(--c-champagne-cl); font-weight: 500; }
.site-signature a:hover { color: #fff; }
.sig-ico { width: 14px; height: 14px; display: inline-block; }
.sig-heart { color: #e0556b; animation: heartbeat 1.5s ease-in-out infinite; transform-origin: center; }
.sig-flame { color: #f0a830; }
@keyframes heartbeat { 0%,100%{transform:scale(1)} 25%{transform:scale(1.2)} 40%{transform:scale(.92)} 60%{transform:scale(1.12)} }

/* --------------------------------------------------------------------------
   15. CLIC-TO-CALL FLOTTANT (mobile)
   -------------------------------------------------------------------------- */
.fab-call {
  position: fixed; right: 1.25rem; bottom: 1.25rem; z-index: 90;
  width: 56px; height: 56px; border-radius: 50%;
  background: var(--c-noir); color: var(--c-blanc);
  display: grid; place-items: center;
  box-shadow: 0 8px 24px rgba(0,0,0,0.25);
  transition: background var(--t-fast), transform var(--t-fast);
}
.fab-call:hover { background: var(--accent); color: var(--c-noir); transform: translateY(-2px); }
@media (min-width: 900px) { .fab-call { display: none; } }

/* --------------------------------------------------------------------------
   16. ANIMATIONS AU SCROLL (reveal)
   -------------------------------------------------------------------------- */
[data-reveal] { opacity: 0; transform: translateY(28px); transition: opacity 0.9s var(--ease), transform 0.9s var(--ease); }
[data-reveal].is-visible { opacity: 1; transform: none; }

/* --------------------------------------------------------------------------
   17. RESPONSIVE — NAV MOBILE
   -------------------------------------------------------------------------- */
@media (max-width: 860px) {
  .nav-toggle { display: block; }
  .site-nav {
    position: fixed; inset: 0; flex-direction: column; justify-content: center;
    gap: 2rem; background: var(--c-noir); color: var(--c-blanc);
    transform: translateX(100%); transition: transform var(--t-slow); z-index: 99;
  }
  .site-nav.is-open { transform: none; }
  .site-nav a { font-size: 1.1rem; }
}

/* --------------------------------------------------------------------------
   19. GALERIE (masonry)
   -------------------------------------------------------------------------- */
.gallery { columns: 1; column-gap: clamp(0.5rem, 1.5vw, 1rem); }
@media (min-width: 600px)  { .gallery { columns: 2; } }
@media (min-width: 1000px) { .gallery { columns: 3; } }
.gallery__item {
  position: relative; display: block; break-inside: avoid;
  margin-bottom: clamp(0.5rem, 1.5vw, 1rem); overflow: hidden;
  background: var(--c-sable);
}
.gallery__item img { width: 100%; height: auto; display: block; transition: transform 1s var(--ease), filter var(--t-slow); }
.gallery__item:hover img { transform: scale(1.05); }
.gallery__item::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(0,0,0,0.65));
  opacity: 0; transition: opacity var(--t-slow);
}
.gallery__item:hover::after { opacity: 1; }
.gallery__cap {
  position: absolute; left: 0; bottom: 0; z-index: 2;
  padding: 1.25rem; color: #fff; font-size: var(--fs-small);
  opacity: 0; transform: translateY(8px); transition: var(--t-fast);
}
.gallery__item:hover .gallery__cap { opacity: 1; transform: none; }
.gallery__play {
  position: absolute; top: 1rem; right: 1rem; z-index: 2;
  width: 38px; height: 38px; border-radius: 50%;
  background: rgba(0,0,0,0.45); backdrop-filter: blur(4px);
  display: grid; place-items: center; color: #fff;
}

/* --------------------------------------------------------------------------
   20. RÉFÉRENCES (« ils nous ont fait confiance »)
   -------------------------------------------------------------------------- */
.refs-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
@media (min-width: 700px)  { .refs-grid { grid-template-columns: repeat(3, 1fr); } }
.ref-card {
  background: var(--bg); padding: clamp(2rem, 4vw, 3rem) 1.5rem; text-align: center;
  display: grid; gap: 0.4rem; place-content: center; min-height: 180px;
  transition: background var(--t-fast);
}
.ref-card:hover { background: var(--c-blanc); }
.ref-card__name { font-family: var(--font-serif); font-size: var(--fs-h3); }
.ref-card__type { font-size: var(--fs-label); letter-spacing: var(--ls-wide); text-transform: uppercase; color: var(--text-soft); }

/* --------------------------------------------------------------------------
   18. ACCESSIBILITÉ
   -------------------------------------------------------------------------- */
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.skip-link { position:absolute; left:-9999px; top:0; background:var(--c-noir); color:#fff; padding:1rem; z-index:200; }
.skip-link:focus { left: 0; }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
  [data-reveal] { opacity: 1; transform: none; }
}