/* =========================================================
   Pulsation Communication — style.css
   Charte : noir #080808 / jaune #F5C400 / rose #FF3D7F
   Typo : Montserrat uniquement
   ========================================================= */

:root {
  --black: #080808;
  --black-2: #111111;
  --black-3: #1A1A1A;
  --y: #F5C400;
  --y-2: #FFD740;
  --p: #FF3D7F;
  --p-2: #FF6BA8;
  --white: #FFFFFF;
  --grey: #888888;
  --grey-2: #444444;
  --line: rgba(255, 255, 255, 0.10);
  --sans: 'Montserrat', system-ui, sans-serif;
  --container: 1240px;
  --gutter: clamp(20px, 5vw, 72px);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: auto; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--black);
  color: var(--white);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; padding: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
p { margin: 0 0 1em; }
h1, h2, h3 { margin: 0; }
::selection { background: var(--y); color: var(--black); }
:focus-visible { outline: 2px solid var(--y); outline-offset: 4px; }

/* ---------- Grain ---------- */
.grain {
  position: fixed; inset: 0;
  pointer-events: none; z-index: 9000;
  opacity: 0.07;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- Typo ---------- */
.y { color: var(--y); }
.p { color: var(--p); }

.h1 {
  font-weight: 900;
  font-size: clamp(2.6rem, 7.2vw, 6rem);
  line-height: 0.98;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  max-width: 14ch;
}
.h2 {
  font-weight: 900;
  font-size: clamp(2rem, 4.6vw, 3.2rem);
  line-height: 1.02;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  margin-bottom: clamp(20px, 3vw, 32px);
  max-width: 20ch;
}
.h3 {
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  line-height: 1.2;
  margin-bottom: 12px;
}
.eyebrow {
  font-weight: 700;
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--grey);
  margin-bottom: 20px;
}
.lead {
  font-weight: 300;
  font-size: clamp(1.05rem, 1.6vw, 1.3rem);
  line-height: 1.55;
  max-width: 56ch;
  color: rgba(255, 255, 255, 0.82);
  margin-bottom: clamp(36px, 5vw, 64px);
}

/* Split reveal (titres) */
.split .word { display: inline-block; overflow: hidden; vertical-align: top; }
.split .word > span { display: inline-block; }
html.js .split .word > span { transform: translateY(110%); }

/* Reveal état initial (JS only) */
html.js [data-reveal],
html.js [data-reveal-stagger] > * { opacity: 0; transform: translateY(40px); }

/* ---------- Layout ---------- */
.container {
  width: min(var(--container), 100% - 2 * var(--gutter));
  margin-inline: auto;
}
.section {
  position: relative;
  padding-block: clamp(96px, 14vw, 180px);
}
.section-alt { background: var(--black-2); }
.section-mid { background: var(--black-3); }

/* Séparateur ECG */
.ecg-sep {
  display: block;
  width: 100%;
  height: 40px;
  margin-block: -20px;
  position: relative; z-index: 2;
}
.ecg-sep polyline {
  fill: none;
  stroke: url(#ecgSepGrad);
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  vector-effect: non-scaling-stroke;
}

/* ---------- Boutons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 12px;
  padding: 16px 28px;
  font-weight: 700; font-size: 0.78rem;
  letter-spacing: 0.14em; text-transform: uppercase;
  border: 1.5px solid var(--white);
  border-radius: 999px;
  color: var(--white);
  position: relative; overflow: hidden;
  transition: color 0.35s var(--ease), border-color 0.35s var(--ease), transform 0.35s var(--ease);
  will-change: transform;
}
.btn::before {
  content: ""; position: absolute; inset: 0;
  background: var(--white);
  transform: scaleX(0); transform-origin: left;
  transition: transform 0.45s var(--ease);
  z-index: -1;
}
.btn:hover::before, .btn:focus-visible::before { transform: scaleX(1); }
.btn:hover, .btn:focus-visible { color: var(--black); }

.btn-primary { border-color: var(--p); color: var(--white); }
.btn-primary::before { background: var(--p); transform-origin: left; }
.btn-primary:hover, .btn-primary:focus-visible { color: var(--black); }

.btn-ghost { border-color: rgba(255, 255, 255, 0.35); }
.btn-ghost::before { background: var(--y); }
.btn-ghost:hover { border-color: var(--y); }

.btn-small { padding: 11px 20px; font-size: 0.7rem; }
.btn-large { padding: 22px 40px; font-size: 0.86rem; }

.link {
  position: relative;
  padding-bottom: 2px;
  background-image: linear-gradient(var(--y), var(--y));
  background-size: 0% 1.5px;
  background-repeat: no-repeat;
  background-position: left bottom;
  transition: background-size 0.4s var(--ease);
}
.link:hover, .link:focus-visible { background-size: 100% 1.5px; }

.link-btn {
  font-weight: 700; font-size: 0.72rem;
  letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--grey);
  transition: color 0.3s;
}
.link-btn:hover, .link-btn:focus-visible { color: var(--y); }

/* ---------- Nav ---------- */
.nav {
  position: fixed; inset: 0 0 auto 0;
  z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 22px var(--gutter);
  transition: background 0.4s, backdrop-filter 0.4s, border-color 0.4s;
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled {
  background: rgba(8, 8, 8, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom-color: var(--line);
}
.wordmark { display: flex; flex-direction: column; line-height: 1; }
.wordmark-main {
  font-weight: 900; font-size: 1.15rem;
  letter-spacing: 0.1em; text-transform: uppercase;
}
.wordmark-sub {
  font-weight: 400; font-size: 0.52rem;
  letter-spacing: 0.35em; text-transform: uppercase;
  color: rgba(255, 255, 255, 0.45);
  margin-top: 5px;
}
.nav-links { display: flex; align-items: center; gap: clamp(20px, 3vw, 40px); }
.nav-links > a:not(.btn) {
  font-weight: 700; font-size: 0.72rem;
  letter-spacing: 0.16em; text-transform: uppercase;
  padding-bottom: 4px;
  background-image: linear-gradient(var(--y), var(--y));
  background-size: 0% 1.5px; background-repeat: no-repeat;
  background-position: left bottom;
  transition: background-size 0.4s var(--ease), color 0.3s;
}
.nav-links > a:not(.btn):hover,
.nav-links > a:not(.btn).is-active { background-size: 100% 1.5px; }

.burger {
  display: none;
  width: 44px; height: 44px;
  flex-direction: column; justify-content: center; align-items: center; gap: 7px;
}
.burger span {
  width: 24px; height: 1.5px; background: var(--white);
  transition: transform 0.35s var(--ease), opacity 0.3s;
}
.burger.is-open span:first-child { transform: translateY(4.25px) rotate(45deg); }
.burger.is-open span:last-child { transform: translateY(-4.25px) rotate(-45deg); }

.mobile-menu {
  position: fixed; inset: 0; z-index: 90;
  background: rgba(8, 8, 8, 0.97);
  display: flex; flex-direction: column; justify-content: center; align-items: center; gap: 28px;
  padding: var(--gutter);
}
.mobile-menu[hidden] { display: none; }
.mobile-menu > a:not(.btn) {
  font-weight: 900; font-size: 2rem;
  letter-spacing: -0.01em; text-transform: uppercase;
}
.mobile-menu > .btn { margin-top: 16px; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex; align-items: center;
  padding: 140px var(--gutter) 120px;
  overflow: hidden;
}
.hero-canvas {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  z-index: 0;
}
.hero-ring {
  position: absolute;
  left: 50%; top: 50%;
  width: min(70vw, 720px); aspect-ratio: 1;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  border: 1px solid rgba(255, 61, 127, 0.18);
  box-shadow: 0 0 0 40px rgba(245, 196, 0, 0.03);
  animation: ring 3s ease-in-out infinite;
  pointer-events: none;
  z-index: 0;
}
@keyframes ring {
  0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.4; }
  50% { transform: translate(-50%, -50%) scale(1.02); opacity: 0.9; }
}
.hero-inner {
  position: relative; z-index: 1;
  width: min(var(--container), 100%);
  margin-inline: auto;
}
.hero .h1 { margin-bottom: clamp(24px, 3vw, 40px); }
.hero-sub {
  font-weight: 300;
  font-size: clamp(1.05rem, 1.7vw, 1.35rem);
  letter-spacing: 0.01em;
  max-width: 48ch;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: clamp(32px, 4vw, 48px);
}
.hero-cta { display: flex; flex-wrap: wrap; gap: 16px; }

.scroll-hint {
  position: absolute; left: 50%; bottom: 32px;
  transform: translateX(-50%);
  width: 1px; height: 56px;
  background: var(--line);
  overflow: hidden; z-index: 1;
}
.scroll-hint span {
  display: block; width: 100%; height: 40%;
  background: linear-gradient(var(--y), var(--p));
  animation: hint 2s var(--ease) infinite;
}
@keyframes hint {
  0% { transform: translateY(-100%); }
  100% { transform: translateY(260%); }
}

/* ---------- Méthode ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.step {
  background: var(--black-2);
  padding: clamp(28px, 3vw, 44px) clamp(22px, 2.4vw, 32px);
  position: relative;
  transition: background 0.4s;
}
.step:hover { background: var(--black-3); }
.step-num {
  display: block;
  font-weight: 900;
  font-size: clamp(2.6rem, 4vw, 3.6rem);
  line-height: 1;
  letter-spacing: -0.03em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(255, 255, 255, 0.28);
  margin-bottom: 28px;
  transition: color 0.4s, -webkit-text-stroke-color 0.4s;
}
.step:hover .step-num { color: var(--y); -webkit-text-stroke-color: var(--y); }
.step:nth-child(4):hover .step-num { color: var(--p); -webkit-text-stroke-color: var(--p); }
.step p { font-size: 0.95rem; color: rgba(255, 255, 255, 0.78); margin: 0; }

/* ---------- Résultats ---------- */
.cases {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(16px, 2vw, 28px);
}
.case {
  display: block; text-align: left;
  border: 1px solid var(--line);
  background: var(--black-2);
  transition: border-color 0.4s var(--ease), transform 0.5s var(--ease);
}
.case:hover, .case:focus-visible { border-color: var(--y); transform: translateY(-4px); }
.case-media {
  display: block; overflow: hidden;
  aspect-ratio: 16 / 10;
  background: var(--black-3);
}
.case-media img {
  width: 100%; height: 120%;
  object-fit: cover;
  transition: scale 0.7s var(--ease);
  will-change: transform;
}
.case:hover .case-media img { scale: 1.04; }
.case-body {
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-areas: "meta meta" "name arrow" "angle arrow";
  gap: 4px 16px;
  padding: 22px 24px 26px;
}
.case-meta {
  grid-area: meta;
  font-weight: 700; font-size: 0.7rem;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--grey);
  margin-bottom: 6px;
}
.case-name {
  grid-area: name;
  font-weight: 900; font-size: 1.25rem;
  letter-spacing: -0.01em; text-transform: uppercase;
  line-height: 1.1;
}
.case-angle {
  grid-area: angle;
  font-size: 0.88rem; line-height: 1.5;
  color: rgba(255, 255, 255, 0.72);
}
.case-arrow {
  grid-area: arrow; align-self: end;
  font-size: 1.4rem; color: var(--p);
  transition: transform 0.4s var(--ease);
}
.case:hover .case-arrow { transform: translateX(6px); }

/* ---------- À propos ---------- */
.about {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: clamp(40px, 6vw, 96px);
  align-items: center;
}
.about-media {
  overflow: hidden;
  aspect-ratio: 4 / 5;
  border: 1px solid var(--line);
  background: var(--black-2);
}
.about-media img { width: 100%; height: 120%; object-fit: cover; object-position: 62% 30%; will-change: transform; }
.about-text p { color: rgba(255, 255, 255, 0.82); }
.about-facts {
  margin-top: 36px;
  border-top: 1px solid var(--line);
}
.about-facts li {
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.72);
  display: block;
}
.about-facts strong {
  font-weight: 800; color: var(--white);
  text-transform: uppercase; letter-spacing: 0.04em; font-size: 0.9rem;
}
.about-facts li::before {
  content: "";
  display: inline-block;
  margin-right: 10px;
  vertical-align: middle;
  width: 18px; height: 1.5px;
  background: linear-gradient(90deg, var(--y), var(--p));
}

/* ---------- Offre ---------- */
.offer {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(16px, 2vw, 28px);
  margin-bottom: clamp(48px, 6vw, 80px);
}
.offer-block {
  padding: clamp(28px, 3vw, 40px);
  border: 1px solid var(--line);
  position: relative;
  transition: border-color 0.4s;
}
.offer-block::before {
  content: "";
  position: absolute; top: -1px; left: 0;
  width: 100%; height: 2px;
  transform: scaleX(0.12); transform-origin: left;
  background: linear-gradient(90deg, var(--y), var(--p));
  transition: transform 0.6s var(--ease);
}
.offer-block:hover { border-color: rgba(255, 255, 255, 0.28); }
.offer-block:hover::before { transform: scaleX(1); }
.offer-block p { font-size: 0.95rem; color: rgba(255, 255, 255, 0.78); margin: 0; }
.offer-close {
  font-weight: 300;
  font-size: clamp(1.1rem, 1.8vw, 1.5rem);
  line-height: 1.45;
  max-width: 34ch;
  margin-bottom: 32px;
}

/* ---------- Contact ---------- */
.contact-inner { text-align: center; display: flex; flex-direction: column; align-items: center; }
.contact .h2 { max-width: none; font-size: clamp(2.4rem, 7vw, 5.4rem); }
.contact .lead { text-align: center; margin-bottom: 40px; }
.contact-alt { margin-top: 40px; font-size: 0.92rem; color: var(--grey); }
.sep { margin: 0 12px; color: var(--grey-2); }

/* ---------- Footer ---------- */
.footer {
  border-top: 1px solid var(--line);
  padding-top: clamp(56px, 8vw, 96px);
}
.footer-inner {
  display: flex; flex-direction: column; align-items: center;
  text-align: center;
  padding-bottom: clamp(40px, 6vw, 64px);
}
.footer-logo {
  width: min(360px, 80vw); height: auto;
  margin-bottom: 28px;
}
.footer-legal { font-size: 0.78rem; color: var(--grey); margin: 0; }

.mentions {
  border-top: 1px solid var(--line);
  padding-block: 40px;
  font-size: 0.82rem; color: var(--grey);
}
.mentions p { margin-bottom: 8px; }

/* ---------- Modal ---------- */
.modal { position: fixed; inset: 0; z-index: 200; }
.modal[hidden] { display: none; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(13, 13, 13, 0.96); }
.modal-panel {
  position: absolute; inset: 0;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding: clamp(80px, 10vw, 120px) var(--gutter) 80px;
}
.modal-close {
  position: fixed; top: 20px; right: var(--gutter);
  width: 52px; height: 52px;
  border: 1px solid var(--line);
  border-radius: 50%;
  font-size: 1.6rem; line-height: 1;
  font-weight: 300;
  transition: border-color 0.3s, transform 0.4s var(--ease);
  z-index: 2;
}
.modal-close:hover { border-color: var(--y); transform: rotate(90deg); }
.modal-content { width: min(980px, 100%); margin-inline: auto; }
.modal-content .h2 { max-width: none; }
.modal-angle {
  font-weight: 300;
  font-size: clamp(1.05rem, 1.6vw, 1.3rem);
  color: rgba(255, 255, 255, 0.82);
  margin-bottom: 40px;
}
.modal-media {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 48px;
}
.modal-media img,
.modal-media video { width: 100%; aspect-ratio: 1 / 1; object-fit: cover; border: 1px solid var(--line); display: block; background: var(--black-3); }
.modal-video { position: relative; width: 100%; max-width: 640px; margin-inline: auto; aspect-ratio: 16 / 9; border: 1px solid var(--line); background: var(--black-3); }
.modal-video iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
/* Vidéo YouTube seule : pleine largeur ; avec une image à côté : les deux en 16/9 */
.modal-media:has(.modal-video) { grid-template-columns: 1fr; }
.modal-video.is-vertical { aspect-ratio: 9 / 16; max-width: 270px; }
.modal-media:has(.modal-video) > img,
.modal-media:has(.modal-video) > video { aspect-ratio: 16 / 9; }

/* Carrousel */
.carousel { position: relative; width: 100%; max-width: 640px; margin-inline: auto; }
.carousel-track {
  display: flex; overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  border: 1px solid var(--line);
  background: var(--black-3);
}
.carousel-track::-webkit-scrollbar { display: none; }
.carousel-slide { flex: 0 0 100%; scroll-snap-align: start; }
.carousel-slide img { width: 100%; aspect-ratio: 1 / 1; object-fit: cover; display: block; }
.carousel-btn {
  position: absolute; top: 50%; transform: translateY(-50%);
  width: 44px; height: 44px; border-radius: 50%;
  background: rgba(8, 8, 8, 0.7); border: 1px solid var(--line);
  color: var(--white); font-size: 1.1rem;
  transition: border-color 0.3s, background 0.3s;
}
.carousel-btn:hover { border-color: var(--y); background: rgba(8, 8, 8, 0.9); }
.carousel-prev { left: 12px; }
.carousel-next { right: 12px; }
.carousel-dots { display: flex; justify-content: center; gap: 8px; margin-top: 12px; }
.carousel-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--grey-2); transition: background 0.3s, transform 0.3s;
}
.carousel-dot.is-active { background: var(--y); transform: scale(1.3); }
.modal-blocks {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.modal-block { background: var(--black); padding: 28px 24px; }
.modal-block p { font-size: 0.95rem; color: rgba(255, 255, 255, 0.8); margin: 0; }
.modal-note {
  margin-top: 24px;
  font-size: 0.8rem;
  color: var(--grey);
}
.modal-nav {
  display: flex; justify-content: space-between;
  margin-top: 48px; padding-top: 24px;
  border-top: 1px solid var(--line);
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .cases { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 900px) {
  .nav-links { display: none; }
  .burger { display: flex; }
  .about { grid-template-columns: 1fr; }
  .about-media { max-width: 420px; }
  .offer { grid-template-columns: 1fr; }
  .modal-blocks { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .cases { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .modal-media { grid-template-columns: 1fr; }
  .hero { padding-top: 120px; }
  .h1 { font-size: clamp(1.9rem, 9vw, 3rem); }
  .h2 { font-size: clamp(1.7rem, 8vw, 2.4rem); }
  .btn-large { padding: 18px 28px; }
  .sep { display: block; margin: 8px 0; opacity: 0; height: 0; }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html.js [data-reveal],
  html.js [data-reveal-stagger] > *,
  html.js .split .word > span { opacity: 1; transform: none; }
  .grain, .hero-ring, .logo-ring, .scroll-hint span { animation: none; }
  .hero-canvas { display: none; }
  * { transition-duration: 0.01ms !important; }
}