/* ==========================================================================
   KATRYA — Feuille de style principale
   Site statique reconstruit à partir de la version Framer publiée
   ========================================================================== */

/* ---------- Polices auto-hébergées (Inter, licence OFL) ---------- */
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url("/assets/fonts/inter-variable-normal.woff2") format("woff2-variations");
}
@font-face {
  font-family: "Inter";
  font-style: italic;
  font-weight: 100 900;
  font-display: swap;
  src: url("/assets/fonts/inter-variable-italic.woff2") format("woff2-variations");
}

/* ---------- Variables ---------- */
:root {
  --color-bg: #0a0a0b;
  --color-bg-soft: #121214;
  --color-surface: #17181a;
  --color-border: rgba(245, 244, 240, 0.14);
  --color-text: #f5f4f0;
  --color-text-dim: rgba(245, 244, 240, 0.62);
  --color-text-faint: rgba(245, 244, 240, 0.38);
  --color-accent: #f5f4f0;
  --font-main: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --container-w: 1240px;
  --gutter: clamp(20px, 5vw, 64px);
  --radius: 18px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

/* ---------- Reset ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-main);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img, video { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input, select, textarea { font-family: inherit; font-size: 16px; }
h1, h2, h3, h4 { font-weight: 900; letter-spacing: -0.02em; line-height: 1.05; }
.visually-hidden {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap;
}

/* ---------- Grain overlay (texture subtile pleine page) ---------- */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background: url("/assets/img/grain-overlay.png") repeat;
  opacity: 0.05;
  mix-blend-mode: overlay;
  pointer-events: none;
  z-index: 999;
}

/* ---------- Layout ---------- */
.container {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
section { position: relative; }

/* ---------- Header ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 20px var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: linear-gradient(to bottom, rgba(10,10,11,0.85), transparent);
  backdrop-filter: blur(6px);
}
.logo img { height: 22px; width: auto; }
.main-nav { display: flex; align-items: center; gap: 28px; }
.main-nav ul { display: flex; gap: 28px; }
.main-nav a {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
  display: inline-flex;
  align-items: baseline;
  gap: 4px;
  color: var(--color-text-dim);
  transition: color 0.25s var(--ease);
}
.main-nav a sup { font-size: 9px; opacity: 0.6; }
.main-nav a:hover, .main-nav a.active { color: var(--color-text); }

.ceo-widget {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 14px 6px 6px;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: rgba(255,255,255,0.03);
  transition: border-color 0.25s var(--ease), background 0.25s var(--ease);
}
.ceo-widget:hover { border-color: rgba(245,244,240,0.35); background: rgba(255,255,255,0.06); }
.ceo-widget img { width: 32px; height: 32px; border-radius: 50%; object-fit: cover; }
.ceo-widget .ceo-text { display: flex; flex-direction: column; line-height: 1.15; }
.ceo-widget .ceo-label { font-size: 10px; color: var(--color-text-faint); text-transform: uppercase; letter-spacing: 0.06em; }
.ceo-widget .ceo-name { font-size: 12px; font-weight: 700; }

.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  align-items: center;
  justify-content: center;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after {
  content: ""; display: block; width: 16px; height: 1px; background: var(--color-text);
  position: relative; transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}
.nav-toggle span::before { position: absolute; top: -5px; }
.nav-toggle span::after { position: absolute; top: 5px; }
.nav-toggle.is-open span { background: transparent; }
.nav-toggle.is-open span::before { transform: translateY(5px) rotate(45deg); }
.nav-toggle.is-open span::after { transform: translateY(-5px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  padding: 140px var(--gutter) 80px;
  background: #050506;
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-bg img, .hero-bg video {
  width: 100%; height: 100%; object-fit: cover;
  opacity: 0.9;
}
.hero-bg::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(5,5,6,0.15) 0%, rgba(5,5,6,0.55) 55%, rgba(5,5,6,0.92) 100%);
}
.hero-gradient-anim {
  position: absolute; inset: -20%;
  background: conic-gradient(from 180deg at 50% 50%, #05070c, #1a2230, #05070c 35%, #241a12, #05070c 70%);
  filter: blur(60px) saturate(1.2);
  animation: heroDrift 18s linear infinite;
  opacity: 0.85;
}
@keyframes heroDrift {
  0% { transform: rotate(0deg) scale(1.1); }
  50% { transform: rotate(180deg) scale(1.3); }
  100% { transform: rotate(360deg) scale(1.1); }
}
.hero-content { position: relative; z-index: 2; width: 100%; }
.hero-mark {
  position: absolute;
  bottom: 100%;
  left: 0;
  font-size: clamp(70px, 16vw, 220px);
  font-weight: 900;
  letter-spacing: -0.03em;
  color: rgba(245,244,240,0.9);
  line-height: 0.8;
  margin-bottom: -0.05em;
}
.hero-meta {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--color-text-faint);
  margin-bottom: 24px;
  letter-spacing: 0.04em;
}
.hero-title {
  font-size: clamp(34px, 6vw, 68px);
  max-width: 780px;
  margin-bottom: 28px;
}
.hero-tagline {
  font-size: clamp(15px, 1.6vw, 20px);
  color: var(--color-text-dim);
  max-width: 420px;
  margin-bottom: 32px;
}
.hero-label {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-faint);
  margin-bottom: 18px;
}

/* ---------- Boutons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 26px;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: background 0.25s var(--ease), color 0.25s var(--ease), border-color 0.25s var(--ease);
}
.btn:hover { background: var(--color-text); color: var(--color-bg); border-color: var(--color-text); }
.btn-primary { background: var(--color-text); color: var(--color-bg); }
.btn-primary:hover { background: transparent; color: var(--color-text); }

/* ---------- Sections génériques ---------- */
.section { padding: 120px 0; border-top: 1px solid var(--color-border); }
.section-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 56px;
  font-size: 13px;
  color: var(--color-text-faint);
  letter-spacing: 0.05em;
}
.section-head .section-title {
  font-size: clamp(24px, 3vw, 34px);
  color: var(--color-text);
  font-weight: 700;
  letter-spacing: -0.01em;
}
.section-index { font-variant-numeric: tabular-nums; }

/* ---------- Grid pilliers (Authentifier / Tracer / Valoriser) ---------- */
.pillars-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}
.pillars-media img { border-radius: var(--radius); width: 100%; }
.pillars-intro { font-size: clamp(18px, 2.2vw, 24px); color: var(--color-text-dim); margin-bottom: 40px; max-width: 480px; }
.pillar-list { display: flex; flex-direction: column; gap: 28px; }
.pillar-item { border-top: 1px solid var(--color-border); padding-top: 24px; }
.pillar-item h3 { font-size: 19px; margin-bottom: 8px; font-weight: 700; }
.pillar-item p { color: var(--color-text-dim); font-size: 15px; max-width: 440px; }

/* ---------- Cartes Solution ---------- */
.solution-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.solution-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 3/4;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 22px;
  isolation: isolate;
}
.solution-card img {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover;
  z-index: -2;
  transition: transform 0.6s var(--ease);
}
.solution-card::after {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(180deg, rgba(5,5,6,0.05), rgba(5,5,6,0.9));
}
.solution-card:hover img { transform: scale(1.06); }
.solution-card .card-index { font-size: 12px; color: var(--color-text-faint); margin-bottom: 10px; }
.solution-card .card-cat { font-size: 11px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--color-text-faint); margin-bottom: 6px; }
.solution-card .card-title { font-size: 18px; font-weight: 700; line-height: 1.2; }
.related-grid { grid-template-columns: repeat(2, 1fr); max-width: 760px; }
.detail-badge {
  display: inline-flex; align-items: center; gap: 8px; margin-top: 24px;
  font-size: 12px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--color-text-faint);
  border: 1px solid var(--color-border); border-radius: 999px; padding: 8px 16px; width: fit-content;
}
.detail-badge::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: #4ade80; }

/* ---------- Positionnement (3 blocs marché) ---------- */
.market-list { display: flex; flex-direction: column; }
.market-item {
  display: grid;
  grid-template-columns: 0.9fr 1.4fr;
  gap: 48px;
  padding: 48px 0;
  border-top: 1px solid var(--color-border);
  align-items: center;
}
.market-item .market-num { font-size: 44px; font-weight: 900; color: var(--color-text-faint); }
.market-item .market-cat { font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--color-text-faint); margin: 6px 0 10px; }
.market-item h3 { font-size: 22px; font-weight: 700; margin-bottom: 12px; }
.market-item p { color: var(--color-text-dim); font-size: 15px; max-width: 520px; }
.market-item .market-img { border-radius: var(--radius); overflow: hidden; aspect-ratio: 4/5; }
.market-item .market-img img { width: 100%; height: 100%; object-fit: cover; }

/* ---------- FAQ ---------- */
.faq-layout { display: grid; grid-template-columns: 0.9fr 1.4fr; gap: 60px; align-items: start; }
.faq-media { border-radius: var(--radius); overflow: hidden; }
.faq-media video, .faq-media img { width: 100%; height: 100%; object-fit: cover; }
.faq-list { display: flex; flex-direction: column; }
.faq-item { border-bottom: 1px solid var(--color-border); }
.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 22px 0;
  font-size: 16px;
  font-weight: 600;
  text-align: left;
  gap: 20px;
}
.faq-question .faq-icon {
  flex-shrink: 0;
  width: 22px; height: 22px;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  position: relative;
}
.faq-question .faq-icon::before, .faq-question .faq-icon::after {
  content: ""; position: absolute; background: var(--color-text);
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}
.faq-question .faq-icon::before { width: 9px; height: 1px; }
.faq-question .faq-icon::after { width: 1px; height: 9px; }
.faq-item.is-open .faq-icon::after { transform: rotate(90deg); opacity: 0; }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s var(--ease);
}
.faq-answer p { color: var(--color-text-dim); font-size: 15px; padding-bottom: 22px; max-width: 560px; }
.faq-item.is-open .faq-answer { max-height: 240px; }

/* ---------- CTA pré-footer ---------- */
.cta-band {
  padding: 100px 0;
  border-top: 1px solid var(--color-border);
  text-align: center;
}
.cta-band h2 { font-size: clamp(28px, 4vw, 46px); margin-bottom: 10px; }
.cta-band .cta-email { color: var(--color-text-dim); font-size: clamp(18px, 2vw, 24px); margin-bottom: 34px; display: inline-block; }
.cta-band .cta-email:hover { color: var(--color-text); }

/* ---------- Footer ---------- */
.site-footer { padding: 60px 0 30px; border-top: 1px solid var(--color-border); }
.footer-top { display: flex; justify-content: space-between; gap: 40px; flex-wrap: wrap; margin-bottom: 60px; }
.footer-brand .logo img { height: 26px; margin-bottom: 14px; }
.footer-brand p { color: var(--color-text-faint); font-size: 13px; max-width: 280px; }
.footer-nav ul { display: flex; flex-direction: column; gap: 12px; align-items: flex-end; }
.footer-nav a { font-size: 14px; color: var(--color-text-dim); display: inline-flex; gap: 6px; }
.footer-nav a sup { font-size: 9px; color: var(--color-text-faint); }
.footer-nav a:hover { color: var(--color-text); }
.footer-bottom {
  display: flex; justify-content: space-between; align-items: center;
  font-size: 12px; color: var(--color-text-faint); flex-wrap: wrap; gap: 12px;
}
.footer-bottom a { text-decoration: underline; text-decoration-color: var(--color-border); }
.footer-bottom a:hover { color: var(--color-text); }

/* ---------- Reveal au scroll ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* ---------- Sous-pages Solution (détail) ---------- */
.solution-detail-hero { min-height: 72vh; }
.letterspace-heading {
  font-size: clamp(20px, 2.6vw, 32px);
  font-weight: 400;
  letter-spacing: 0.12em;
  line-height: 1.6;
  color: var(--color-text-dim);
  max-width: 900px;
}
.letterspace-heading strong { color: var(--color-text); font-weight: 700; }
.detail-blocks { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; margin-top: 56px; }
.detail-block h3 { font-size: 19px; margin-bottom: 12px; }
.detail-block p { color: var(--color-text-dim); font-size: 15px; }
.detail-facts { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; margin-top: 64px; padding-top: 40px; border-top: 1px solid var(--color-border); }
.detail-facts .fact-label { font-size: 12px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--color-text-faint); margin-bottom: 8px; }
.detail-facts .fact-value { font-size: 17px; font-weight: 600; }
.detail-gallery { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 60px; }
.detail-gallery img { border-radius: var(--radius); aspect-ratio: 3/4; object-fit: cover; width: 100%; height: 100%; }
.detail-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 40px; }
.detail-nav a {
  border: 1px solid var(--color-border); border-radius: var(--radius);
  padding: 26px; display: flex; flex-direction: column; gap: 6px;
  transition: border-color 0.25s var(--ease), background 0.25s var(--ease);
}
.detail-nav a:hover { border-color: rgba(245,244,240,0.4); background: rgba(255,255,255,0.03); }
.detail-nav span.small { font-size: 12px; color: var(--color-text-faint); }
.detail-nav span.big { font-size: 17px; font-weight: 700; }

/* ---------- À propos ---------- */
.timeline { display: flex; flex-direction: column; }
.timeline-item {
  display: grid; grid-template-columns: 120px 1fr 1fr; gap: 32px;
  padding: 40px 0; border-top: 1px solid var(--color-border); align-items: center;
}
.timeline-item .timeline-year { font-size: 34px; font-weight: 900; color: var(--color-text-faint); }
.timeline-item p { color: var(--color-text-dim); font-size: 15px; max-width: 420px; }
.timeline-item .timeline-img { border-radius: var(--radius); overflow: hidden; aspect-ratio: 16/9; }
.timeline-item .timeline-img img { width: 100%; height: 100%; object-fit: cover; }
.timeline-item.no-img { grid-template-columns: 120px 1fr; }

.key-points { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.key-point { border: 1px solid var(--color-border); border-radius: var(--radius); padding: 32px; }
.key-point .kp-num { font-size: 13px; color: var(--color-text-faint); margin-bottom: 18px; }
.key-point h3 { font-size: 20px; margin-bottom: 14px; }
.key-point p { color: var(--color-text-dim); font-size: 14px; margin-bottom: 20px; }
.key-point ul { display: flex; flex-direction: column; gap: 8px; }
.key-point li { font-size: 13px; color: var(--color-text-dim); padding-left: 16px; position: relative; }
.key-point li::before { content: "—"; position: absolute; left: 0; color: var(--color-text-faint); }

/* ---------- Marquee équipe ---------- */
.team-marquee { overflow: hidden; border-top: 1px solid var(--color-border); border-bottom: 1px solid var(--color-border); padding: 40px 0; }
.team-track { display: flex; gap: 60px; width: max-content; animation: teamScroll 16s linear infinite; }
.team-member { display: flex; align-items: center; gap: 14px; font-size: 20px; font-weight: 700; white-space: nowrap; }
.team-member .team-role { font-size: 13px; font-weight: 500; color: var(--color-text-faint); text-transform: uppercase; letter-spacing: 0.06em; }
@keyframes teamScroll { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* ---------- Blog ---------- */
.blog-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.blog-card { border: 1px solid var(--color-border); border-radius: var(--radius); overflow: hidden; display: flex; flex-direction: column; }
.blog-card .blog-img { aspect-ratio: 16/10; overflow: hidden; }
.blog-card .blog-img img { width: 100%; height: 100%; object-fit: cover; }
.blog-card .blog-body { padding: 28px; }
.blog-card .blog-num { font-size: 12px; color: var(--color-text-faint); margin-bottom: 14px; }
.blog-card h3 { font-size: 20px; margin-bottom: 12px; }
.blog-card p { font-size: 14px; color: var(--color-text-dim); margin-bottom: 10px; }

/* ---------- Contact ---------- */
.contact-layout { display: grid; grid-template-columns: 1fr 1fr; min-height: 100vh; }
.contact-visual {
  position: relative;
  background: #050506;
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
}
.contact-visual img.bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0.55; }
.contact-visual .k-mark {
  position: relative; z-index: 1;
  width: 120px; height: 120px; background: #f5f4f0;
  border-radius: 20px; display: flex; align-items: center; justify-content: center;
}
.contact-visual .k-mark img { width: 46px; }
.contact-form-wrap {
  padding: 140px var(--gutter) 80px;
  background: linear-gradient(160deg, #0d1420, #05070c 70%);
  display: flex; flex-direction: column; justify-content: center;
}
.contact-form-wrap h1 { font-size: clamp(30px, 4vw, 46px); margin-bottom: 10px; }
.contact-form-wrap .contact-sub { color: var(--color-text-dim); margin-bottom: 44px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
.form-field { display: flex; flex-direction: column; gap: 8px; margin-bottom: 16px; }
.form-field label { font-size: 12px; color: var(--color-text-faint); text-transform: uppercase; letter-spacing: 0.05em; }
.form-field input, .form-field select, .form-field textarea {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 14px 16px;
  color: var(--color-text);
  transition: border-color 0.25s var(--ease), background 0.25s var(--ease);
}
.form-field input:focus, .form-field select:focus, .form-field textarea:focus {
  outline: none; border-color: rgba(245,244,240,0.5); background: rgba(255,255,255,0.07);
}
.form-field textarea { resize: vertical; min-height: 120px; }
.form-submit { margin-top: 8px; }
.form-status { margin-top: 16px; font-size: 14px; color: var(--color-text-dim); }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .pillars-layout, .faq-layout, .detail-blocks, .contact-layout, .market-item, .timeline-item { grid-template-columns: 1fr; }
  .timeline-item { gap: 16px; }
  .timeline-item .timeline-year { font-size: 26px; }
  .solution-grid { grid-template-columns: repeat(2, 1fr); }
  .key-points { grid-template-columns: 1fr; }
  .detail-gallery { grid-template-columns: repeat(2, 1fr); }
  .blog-grid { grid-template-columns: 1fr; }
  .footer-nav ul { align-items: flex-start; }
  .footer-top { flex-direction: column; }
  .contact-visual { min-height: 320px; }
}
@media (max-width: 720px) {
  .main-nav ul { display: none; }
  .nav-toggle { display: flex; }
  .ceo-widget .ceo-text { display: none; }
  .hero { padding-top: 120px; align-items: flex-end; min-height: 92vh; }
  .hero-mark { font-size: clamp(48px, 20vw, 90px); }
  .section { padding: 80px 0; }
  .solution-grid { grid-template-columns: 1fr; }
  .detail-nav { grid-template-columns: 1fr; }
  .detail-gallery { grid-template-columns: repeat(2, 1fr); }
  .form-row { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}

/* ---------- Menu mobile plein écran ---------- */
.mobile-nav {
  position: fixed; inset: 0; z-index: 90;
  background: var(--color-bg);
  display: flex; flex-direction: column; justify-content: center;
  padding: 0 var(--gutter);
  transform: translateY(-100%);
  transition: transform 0.4s var(--ease);
}
.mobile-nav.is-open { transform: translateY(0); }
.mobile-nav ul { display: flex; flex-direction: column; gap: 22px; }
.mobile-nav a { font-size: 28px; font-weight: 700; }