/* ============================================================
   RUNA CAPITAL — Feuille de style
   Palette encre profonde · parchemin chaud · accent champagne
   ============================================================ */

:root {
  /* Surfaces */
  --ink:        #0E0F13;   /* fond de base */
  --ink-2:      #14161C;   /* surface surélevée */
  --ink-3:      #1B1E26;   /* cartes */
  --line:       #2A2822;   /* filets chauds */
  --line-lit:   #3A3830;

  /* Texte */
  --parchment:      #ECE7DC;  /* texte principal, blanc cassé chaud */
  --parchment-dim:  #B4AE9F;  /* texte secondaire */
  --faint:          #6C685E;  /* texte discret / captions */

  /* Accent */
  --champagne:      #C9A97A;
  --champagne-lo:   rgba(201, 169, 122, 0.14);
  --champagne-line: rgba(201, 169, 122, 0.35);

  /* Typo */
  --serif: "Hoefler Text", "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
  --sans:  -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  /* Mesures */
  --wrap: 1180px;
  --gutter: clamp(1.25rem, 5vw, 4rem);
  --nav-h: 74px;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- Reset léger ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  background: var(--ink);
  color: var(--parchment);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }

/* Grain / texture très subtile pour éviter le "plat" numérique */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(120% 90% at 50% -10%, rgba(201,169,122,0.05), transparent 60%),
    radial-gradient(80% 60% at 100% 100%, rgba(201,169,122,0.03), transparent 55%);
}

/* ---------- Utilitaires ---------- */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
  position: relative;
  z-index: 1;
}
.eyebrow {
  font-size: 0.72rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--champagne);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.7em;
}
.eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: var(--champagne-line);
}
.serif { font-family: var(--serif); }
.lead {
  font-size: clamp(1.08rem, 1.5vw, 1.28rem);
  color: var(--parchment-dim);
  line-height: 1.65;
  max-width: 46ch;
}

/* Titres */
h1, h2, h3 { font-family: var(--serif); font-weight: 500; line-height: 1.08; letter-spacing: -0.01em; }
.display {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(2.6rem, 6vw, 4.7rem);
  line-height: 1.02;
  letter-spacing: -0.015em;
}
.page-title {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(2.1rem, 4.6vw, 3.4rem);
  line-height: 1.05;
  letter-spacing: -0.015em;
}

/* Filet gravé décoratif */
.rule {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-lit) 20%, var(--line-lit) 80%, transparent);
  border: 0;
}

/* ============================================================
   NAVIGATION
   ============================================================ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  z-index: 100;
  display: flex;
  align-items: center;
  transition: background .4s var(--ease), border-color .4s var(--ease), backdrop-filter .4s var(--ease);
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(14, 15, 19, 0.82);
  backdrop-filter: saturate(140%) blur(14px);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  border-bottom-color: var(--line);
}
.nav .wrap { display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; }

.brand { display: inline-flex; align-items: center; gap: 0.7rem; }
.brand .mark { width: 34px; height: 34px; }
.brand .mark path { stroke: var(--champagne); }
.brand .name {
  font-family: var(--serif);
  font-size: 1.18rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--parchment);
}

.nav-links { display: flex; align-items: center; gap: 2.2rem; list-style: none; }
.nav-links a {
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--parchment-dim);
  position: relative;
  padding: 4px 0;
  transition: color .25s var(--ease);
}
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0; bottom: -2px;
  width: 100%;
  height: 1px;
  background: var(--champagne);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .35s var(--ease);
}
.nav-links a:hover { color: var(--parchment); }
.nav-links a:hover::after,
.nav-links a[aria-current="page"]::after { transform: scaleX(1); }
.nav-links a[aria-current="page"] { color: var(--parchment); }

.nav-right { display: flex; align-items: center; gap: 1.4rem; }

/* Sélecteur de langue */
.lang {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--faint);
}
.lang button {
  background: none; border: 0; color: var(--faint);
  padding: 2px 4px; letter-spacing: 0.08em;
  transition: color .2s var(--ease);
}
.lang button:hover { color: var(--parchment-dim); }
.lang button.active { color: var(--champagne); }
.lang .sep { opacity: .5; }

/* Burger mobile */
.burger {
  display: none;
  background: none; border: 0;
  width: 30px; height: 30px;
  position: relative;
}
.burger span {
  position: absolute; left: 3px; right: 3px; height: 1.5px;
  background: var(--parchment);
  transition: transform .35s var(--ease), opacity .25s var(--ease);
}
.burger span:nth-child(1) { top: 9px; }
.burger span:nth-child(2) { top: 15px; }
.burger span:nth-child(3) { top: 21px; }
.burger.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.burger.open span:nth-child(2) { opacity: 0; }
.burger.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  min-height: 100svh;
  display: flex;
  align-items: center;
  position: relative;
  padding-top: var(--nav-h);
  overflow: hidden;
}
.hero-mark {
  position: absolute;
  right: -2vw;
  top: 50%;
  transform: translateY(-50%);
  width: min(58vw, 680px);
  opacity: 0.10;
  pointer-events: none;
  z-index: 0;
}
.hero-mark path { stroke: var(--parchment); }
.hero .wrap { z-index: 1; }
.hero-inner { max-width: min(620px, 56%); }
.hero .display { margin: 1.6rem 0 1.7rem; }
.hero .lead { max-width: 50ch; }
.hero-motto {
  font-family: var(--serif);
  font-style: italic;
  color: var(--champagne);
  font-size: 1.15rem;
  margin-top: 2.6rem;
  letter-spacing: 0.01em;
}
.scroll-cue {
  position: absolute;
  bottom: 2.2rem; left: var(--gutter);
  display: flex; align-items: center; gap: 0.7rem;
  font-size: 0.7rem; letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--faint);
  z-index: 1;
}
.scroll-cue .bar {
  width: 44px; height: 1px; background: var(--line-lit);
  position: relative; overflow: hidden;
}
.scroll-cue .bar::after {
  content:""; position:absolute; inset:0; width: 40%;
  background: var(--champagne);
  animation: slide 2.6s var(--ease) infinite;
}
@keyframes slide { 0%{transform:translateX(-110%)} 60%,100%{transform:translateX(260%)} }

/* Boutons */
.btn {
  display: inline-flex; align-items: center; gap: 0.6rem;
  font-size: 0.8rem; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--parchment);
  padding: 0.95rem 1.6rem;
  border: 1px solid var(--champagne-line);
  transition: background .3s var(--ease), border-color .3s var(--ease), color .3s var(--ease);
}
.btn:hover { background: var(--champagne-lo); border-color: var(--champagne); }
.btn .arrow { transition: transform .3s var(--ease); }
.btn:hover .arrow { transform: translateX(4px); }
.btn-row { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 0.5rem; }

/* ============================================================
   SECTIONS génériques
   ============================================================ */
section { position: relative; }
.section {
  padding-block: clamp(4.5rem, 11vw, 9rem);
}
.section-head { max-width: 62ch; margin-bottom: clamp(2.5rem, 5vw, 4rem); }
.section-head h2 { font-size: clamp(1.9rem, 3.4vw, 2.75rem); margin: 1.1rem 0 1.2rem; }
.section-head p { color: var(--parchment-dim); max-width: 52ch; }

/* Split intro */
.split {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(2rem, 6vw, 5rem);
  align-items: start;
}
.split .coltext p + p { margin-top: 1.1rem; }
.split .coltext p { color: var(--parchment-dim); }

/* Piliers / domaines */
.pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
}
.pillar {
  padding: 2.4rem 2rem 2.6rem;
  border-bottom: 1px solid var(--line);
  border-right: 1px solid var(--line);
  position: relative;
  transition: background .35s var(--ease);
}
.pillar:nth-child(3n) { border-right: 0; }
.pillar:hover { background: var(--ink-2); }
.pillar .num {
  font-family: var(--serif);
  font-size: 0.85rem;
  color: var(--champagne);
  letter-spacing: 0.1em;
}
.pillar h3 { font-size: 1.5rem; margin: 1.1rem 0 0.8rem; }
.pillar p { color: var(--parchment-dim); font-size: 0.98rem; }

/* Chiffres / stats */
.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1.5rem, 4vw, 3rem);
}
.stat .fig {
  font-family: var(--serif);
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  line-height: 1;
  color: var(--parchment);
}
.stat .fig .unit { color: var(--champagne); }
.stat .lbl {
  margin-top: 0.7rem;
  font-size: 0.8rem; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--faint);
}

/* Liste "process" verticale */
.steps { border-top: 1px solid var(--line); margin-top: 1rem; }
.step {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: clamp(1rem, 3vw, 2.5rem);
  padding: 2.2rem 0;
  border-bottom: 1px solid var(--line);
}
.step .idx { font-family: var(--serif); color: var(--champagne); font-size: 1.1rem; letter-spacing: 0.08em; }
.step h3 { font-size: 1.4rem; margin-bottom: 0.6rem; }
.step p { color: var(--parchment-dim); max-width: 60ch; }

/* Value / bandeau citation */
.quote {
  padding-block: clamp(4rem, 9vw, 7rem);
  border-block: 1px solid var(--line);
  background: var(--ink-2);
}
.quote blockquote {
  font-family: var(--serif);
  font-size: clamp(1.6rem, 3.4vw, 2.6rem);
  line-height: 1.25;
  letter-spacing: -0.01em;
  max-width: 22ch;
}
.quote blockquote .accent { color: var(--champagne); }
.quote cite {
  display: block; margin-top: 1.6rem;
  font-family: var(--sans); font-style: normal;
  font-size: 0.8rem; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--faint);
}

/* ---------- Contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 6vw, 5rem);
  align-items: start;
}
.contact-item { padding: 1.6rem 0; border-bottom: 1px solid var(--line); }
.contact-item:first-child { border-top: 1px solid var(--line); }
.contact-item .k { font-size: 0.74rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--faint); }
.contact-item .v { font-family: var(--serif); font-size: 1.3rem; margin-top: 0.4rem; }
.contact-item .v a { transition: color .25s var(--ease); }
.contact-item .v a:hover { color: var(--champagne); }
.placeholder {
  color: var(--champagne);
  background: var(--champagne-lo);
  padding: 0.05em 0.4em;
  border-radius: 2px;
  font-style: italic;
  font-size: 0.92em;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  border-top: 1px solid var(--line);
  padding-block: 3.5rem 2.5rem;
  background: var(--ink);
}
.footer .top {
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 2rem;
  align-items: flex-start;
}
.footer .brand .mark { width: 27px; height: 27px; }
.footer .brand .name { font-size: 1.05rem; }
.footer nav { display: flex; flex-wrap: wrap; gap: 1.5rem 2rem; }
.footer nav a { font-size: 0.82rem; letter-spacing: 0.08em; color: var(--parchment-dim); transition: color .2s var(--ease); }
.footer nav a:hover { color: var(--champagne); }
.footer .bottom {
  margin-top: 2.6rem; padding-top: 1.6rem; border-top: 1px solid var(--line);
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem;
  font-size: 0.76rem; color: var(--faint); letter-spacing: 0.03em;
}

/* ============================================================
   ANIMATIONS (reveal + load)
   ============================================================ */
.js [data-reveal] { opacity: 0; transform: translateY(22px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
[data-reveal].in { opacity: 1; transform: none; }
[data-reveal][data-delay="1"] { transition-delay: .08s; }
[data-reveal][data-delay="2"] { transition-delay: .16s; }
[data-reveal][data-delay="3"] { transition-delay: .24s; }
[data-reveal][data-delay="4"] { transition-delay: .32s; }

/* Séquence de chargement hero — CSS pur, fonctionne sans JS */
.hero [data-load] {
  animation: rise .95s var(--ease) both;
}
.hero [data-load="1"] { animation-delay: .15s; }
.hero [data-load="2"] { animation-delay: .30s; }
.hero [data-load="3"] { animation-delay: .48s; }
.hero [data-load="4"] { animation-delay: .70s; }
@keyframes rise { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: none; } }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 860px) {
  .nav-links {
    position: fixed;
    inset: var(--nav-h) 0 auto 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: rgba(14,15,19,0.97);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--line);
    padding: 0.5rem var(--gutter) 1.5rem;
    transform: translateY(-120%);
    transition: transform .45s var(--ease);
  }
  .nav-links.open { transform: translateY(0); }
  .nav-links li { width: 100%; border-bottom: 1px solid var(--line); }
  .nav-links a { display: block; padding: 1.1rem 0; font-size: 0.95rem; }
  .nav-links a::after { display: none; }
  .burger { display: block; }

  .split { grid-template-columns: 1fr; }
  .hero-inner { max-width: 100%; }
  .pillars { grid-template-columns: 1fr; }
  .pillar { border-right: 0 !important; }
  .stats { grid-template-columns: 1fr; gap: 2rem; }
  .step { grid-template-columns: 1fr; gap: 0.5rem; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
  .js [data-reveal] { opacity: 1; transform: none; }
  .hero [data-load] { opacity: 1; transform: none; }
}

/* Focus visible accessibilité */
:focus-visible { outline: 2px solid var(--champagne); outline-offset: 3px; }