/* Eolia Tech — feuille de style unique, sans framework */

:root {
  --paper: #f5f3ee;
  --paper-2: #ece9e1;
  --card: #fbfaf7;
  --ink: #121418;
  --ink-2: #1c1f25;
  --text: #22252b;
  --muted: #5b616c;
  --line: #d9d5cb;
  --accent: #d9462b;
  --accent-ink: #b8361e;
  --on-dark: #eceae4;
  --on-dark-muted: #9aa0aa;
  --line-dark: #2c3038;

  --sans: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;

  --wrap: 1160px;
  --gutter: clamp(16px, 4vw, 40px);
  --radius: 10px;
  --header-h: 68px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 12px); -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0; background: var(--paper); color: var(--text);
  font: 400 17px/1.6 var(--sans); -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; }
h1, h2, h3 { color: var(--ink); line-height: 1.12; letter-spacing: -0.02em; margin: 0; font-weight: 600; text-wrap: balance; }
p { margin: 0; text-wrap: pretty; }
ul, ol { margin: 0; padding: 0; list-style: none; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gutter); }
.sr, .hp { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--accent); color: #fff; padding: 8px 14px; z-index: 100; border-radius: 6px; }
.skip:focus { left: 8px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

.eyebrow {
  font: 500 12.5px/1.4 var(--mono); letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 14px;
}
.eyebrow a { text-decoration: none; }

/* ---------- Boutons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px; height: 48px; padding: 0 22px;
  border-radius: 8px; font: 600 15.5px/1 var(--sans); text-decoration: none; cursor: pointer;
  border: 1px solid transparent; transition: background .18s, border-color .18s, color .18s, transform .18s;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-ink); }
.btn-ghost { border-color: rgba(255,255,255,.28); color: var(--on-dark); }
.btn-ghost:hover { border-color: var(--on-dark); }

/* ---------- En-tête ---------- */
.site-header {
  position: fixed; inset: 0 0 auto; z-index: 50; height: var(--header-h);
  background: rgba(18, 20, 24, .82); backdrop-filter: saturate(140%) blur(10px); -webkit-backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid transparent; transition: border-color .2s;
}
.site-header.scrolled { border-bottom-color: var(--line-dark); }
.header-inner { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 24px; }

.brand { display: inline-flex; align-items: center; text-decoration: none; }
.brand img { height: 46px; width: auto; }
.site-footer .brand img { height: 52px; }

.nav { display: flex; align-items: center; gap: 4px; }
.nav a { color: var(--on-dark); text-decoration: none; font-size: 15px; padding: 8px 12px; border-radius: 6px; transition: background .15s; }
.nav a:hover { background: rgba(255,255,255,.07); }
.nav .nav-cta { background: var(--accent); color: #fff; margin-left: 8px; font-weight: 600; }
.nav .nav-cta:hover { background: var(--accent-ink); }
.nav .nav-lang { font: 500 13px/1 var(--mono); color: var(--on-dark-muted); border: 1px solid var(--line-dark); margin-left: 6px; }

.nav-toggle { display: none; width: 44px; height: 44px; border: 0; background: none; cursor: pointer; position: relative; }
.nav-toggle span:first-child, .nav-toggle span:first-child::before, .nav-toggle span:first-child::after {
  position: absolute; left: 11px; width: 22px; height: 2px; background: var(--on-dark); content: ""; transition: transform .2s, top .2s;
}
.nav-toggle span:first-child { top: 21px; }
.nav-toggle span:first-child::before { left: 0; top: -7px; }
.nav-toggle span:first-child::after { left: 0; top: 7px; }
.nav-toggle[aria-expanded="true"] span:first-child { background: transparent; }
.nav-toggle[aria-expanded="true"] span:first-child::before { top: 0; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:first-child::after { top: 0; transform: rotate(-45deg); }

@media (max-width: 860px) {
  .nav-toggle { display: block; }
  .nav {
    position: fixed; top: var(--header-h); left: 0; right: 0; flex-direction: column; align-items: stretch;
    background: var(--ink); padding: 12px var(--gutter) 24px; gap: 2px; border-bottom: 1px solid var(--line-dark);
    transform: translateY(-8px); opacity: 0; visibility: hidden; transition: opacity .2s, transform .2s, visibility .2s;
  }
  .nav.open { transform: none; opacity: 1; visibility: visible; }
  .nav a { padding: 14px 8px; font-size: 17px; }
  .nav .nav-cta, .nav .nav-lang { margin: 8px 0 0; text-align: center; }
}

/* ---------- Accroche ---------- */
.hero {
  position: relative; overflow: hidden; background: var(--ink); color: var(--on-dark);
  padding: calc(var(--header-h) + clamp(64px, 12vh, 140px)) 0 clamp(56px, 9vh, 96px);
}
.hero-flow { position: absolute; inset: 0; width: 100%; height: 100%; opacity: .9; }
.hero::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(90deg, var(--ink) 0%, rgba(18,20,24,.85) 38%, rgba(18,20,24,.15) 100%);
}
.hero-inner { position: relative; z-index: 1; }
.hero h1 {
  color: #fff; font-size: clamp(32px, 4.8vw, 56px); font-weight: 400; line-height: 1.14;
  letter-spacing: -0.022em; max-width: 21ch;
}
.hero h1 strong { font-weight: 600; }
.hero .lead { margin-top: 24px; max-width: 58ch; font-size: clamp(17px, 1.6vw, 19.5px); color: #c9ccd2; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 36px; }
.facts {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; margin: clamp(56px, 9vh, 88px) 0 0;
  border-top: 1px solid var(--line-dark); max-width: 900px;
}
.facts div { padding: 20px 24px 0 0; }
.facts div + div { padding-left: 24px; border-left: 1px solid var(--line-dark); }
.facts dt { font-weight: 650; color: #fff; font-size: 19px; letter-spacing: -0.01em; }
.facts dd { margin: 4px 0 0; color: var(--on-dark-muted); font-size: 14.5px; }
@media (max-width: 680px) {
  .facts { grid-template-columns: 1fr; }
  .facts div, .facts div + div { padding: 16px 0; border-left: 0; border-bottom: 1px solid var(--line-dark); }
}

/* ---------- Sections ---------- */
.section { padding: clamp(72px, 11vw, 128px) 0; }
.section-alt { background: var(--paper-2); }
.section-head { max-width: 720px; margin-bottom: clamp(36px, 5vw, 56px); }
.section-head h2 { font-size: clamp(30px, 3.8vw, 44px); }
.section-lead { margin-top: 16px; color: var(--muted); font-size: 18.5px; }

.tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 18px; }
.tags li { font: 500 12px/1 var(--mono); color: var(--muted); border: 1px solid var(--line); padding: 6px 8px; border-radius: 5px; background: var(--paper); }

/* Services */
.services { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.service { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 30px 28px 28px; display: flex; flex-direction: column; }
.service h3 { font-size: 21px; margin: 22px 0 10px; }
.service p { color: var(--muted); }
.service .tags { margin-top: auto; padding-top: 22px; }
.service-icon { width: 40px; height: 40px; fill: none; stroke: var(--accent); stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.note { margin-top: 28px; color: var(--muted); padding-left: 16px; border-left: 2px solid var(--accent); }
@media (max-width: 960px) { .services { grid-template-columns: 1fr; } }

/* Méthode */
.steps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; counter-reset: s; }
.steps li { padding: 26px 26px 0 0; border-top: 2px solid var(--ink); position: relative; }
.steps li + li { padding-left: 26px; }
.steps li::before { content: ""; position: absolute; top: -6px; left: 0; width: 10px; height: 10px; background: var(--accent); border-radius: 50%; }
.steps li + li::before { left: 26px; }
.step-n { font: 500 13px/1 var(--mono); color: var(--muted); }
.steps h3 { font-size: 20px; margin: 12px 0 10px; }
.steps p { color: var(--muted); font-size: 16px; }
@media (max-width: 960px) {
  .steps { grid-template-columns: 1fr 1fr; row-gap: 40px; }
  .steps li:nth-child(3) { padding-left: 0; }
  .steps li:nth-child(3)::before { left: 0; }
}
@media (max-width: 600px) {
  .steps { grid-template-columns: 1fr; row-gap: 32px; }
  .steps li, .steps li + li { padding-left: 0; }
  .steps li::before, .steps li + li::before { left: 0; }
}

/* Produits */
.feature {
  display: grid; grid-template-columns: 1.15fr 1fr; background: var(--ink); color: var(--on-dark);
  border-radius: var(--radius); overflow: hidden; margin-bottom: 20px;
}
.feature-visual { background: #000; min-height: 340px; position: relative; }
.feature-visual img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.feature-logo img { height: clamp(34px, 3.6vw, 46px); width: auto; }
.feature-body { padding: clamp(28px, 4vw, 48px); display: flex; flex-direction: column; align-items: flex-start; justify-content: center; }
.feature-body h3 { color: #fff; font-size: clamp(30px, 3.4vw, 40px); }
.feature-body p:not(.eyebrow) { margin-top: 14px; color: #c3c7ce; }
.feature-body .tags li { background: transparent; border-color: var(--line-dark); color: var(--on-dark-muted); }
.feature-body .btn { margin-top: 28px; }
@media (max-width: 860px) { .feature { grid-template-columns: 1fr; } .feature-visual { min-height: 0; aspect-ratio: 4 / 3; } }

.products { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.product {
  display: flex; flex-direction: column; text-decoration: none; background: var(--card);
  border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: border-color .2s, transform .2s;
}
.product:hover { border-color: var(--ink); transform: translateY(-2px); }
.product-visual { border-bottom: 1px solid var(--line); aspect-ratio: 16 / 8; display: grid; place-items: center; overflow: hidden; }
.product-visual.is-light { background: var(--paper-2); }
.product-visual.is-dark { background: var(--ink); }
.product-visual.is-light img, .product-visual.is-dark img { width: auto; height: auto; max-width: 64%; max-height: 46%; }
.product-visual.is-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.product:hover .product-visual.is-cover img { transform: scale(1.03); }
.product-body { padding: 24px 26px 26px; display: flex; flex-direction: column; flex: 1; }
.product h3 { font-size: 21px; display: flex; justify-content: space-between; gap: 12px; }
.product .arrow { color: var(--muted); transition: color .2s, transform .2s; }
.product:hover .arrow { color: var(--accent); transform: translate(2px, -2px); }
.product p { margin-top: 8px; color: var(--muted); }
.product .tags { margin-top: auto; padding-top: 18px; }
@media (max-width: 760px) { .products { grid-template-columns: 1fr; } }

/* Technologies */
.stack { border-block: 1px solid var(--line); background: var(--card); }
.stack-inner { display: flex; align-items: center; gap: 28px; padding-block: 22px; }
.stack-title { font: 500 12.5px/1 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--accent); flex: none; }
.stack ul { display: flex; flex-wrap: wrap; gap: 6px 28px; }
.stack li { font: 500 15px/1.6 var(--mono); color: var(--ink); }
@media (max-width: 680px) { .stack-inner { flex-direction: column; align-items: flex-start; gap: 14px; } .stack ul { gap: 4px 18px; } }

/* À propos */
.about { display: grid; grid-template-columns: 1fr 1.25fr; gap: clamp(28px, 6vw, 80px); align-items: start; }
.about .section-head { margin-bottom: 0; }
.about-text p { font-size: 18.5px; color: var(--text); }
.about-text p + p { margin-top: 18px; color: var(--muted); }
@media (max-width: 860px) { .about { grid-template-columns: 1fr; } }

/* Contact */
.section-dark { background: var(--ink); color: var(--on-dark); }
.section-dark h2 { color: #fff; font-size: clamp(30px, 3.8vw, 44px); }
.section-dark .section-lead { color: var(--on-dark-muted); }
.contact { display: grid; grid-template-columns: 1fr 1.25fr; gap: clamp(32px, 6vw, 80px); align-items: start; }
.contact-visuoz { margin-top: 32px; padding: 16px 18px; border: 1px solid var(--line-dark); border-radius: 8px; color: var(--on-dark-muted); font-size: 15.5px; }
.contact-visuoz a { color: #fff; }
@media (max-width: 860px) { .contact { grid-template-columns: 1fr; } }

.form { display: grid; gap: 18px; }
.form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form label { display: grid; gap: 7px; }
.form label > span { font-size: 14px; color: var(--on-dark-muted); }
.form label em { font-style: normal; opacity: .65; }
.form input, .form select, .form textarea {
  width: 100%; font: inherit; font-size: 16px; color: #fff; background: var(--ink-2);
  border: 1px solid var(--line-dark); border-radius: 8px; padding: 12px 14px; transition: border-color .15s;
}
.form select { appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--on-dark-muted) 50%), linear-gradient(135deg, var(--on-dark-muted) 50%, transparent 50%);
  background-position: calc(100% - 20px) 52%, calc(100% - 15px) 52%; background-size: 5px 5px; background-repeat: no-repeat; padding-right: 40px; }
.form textarea { resize: vertical; min-height: 150px; }
.form input:focus, .form select:focus, .form textarea:focus { outline: none; border-color: var(--accent); }
.form [aria-invalid="true"] { border-color: #e8765f; }
.form-foot { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; }
.form-privacy { font-size: 14px; color: var(--on-dark-muted); }
.form button[disabled] { opacity: .6; cursor: progress; }
.form-status { min-height: 1.6em; font-size: 15.5px; }
.form-status[data-state="ok"] { color: #8fd19e; }
.form-status[data-state="err"] { color: #f0a493; }
@media (max-width: 600px) { .form .row { grid-template-columns: 1fr; } }

/* Bouton retour en haut */
.to-top {
  position: fixed; right: clamp(16px, 3vw, 28px); bottom: clamp(16px, 3vw, 28px); z-index: 40;
  width: 46px; height: 46px; border-radius: 50%; display: grid; place-items: center;
  background: var(--ink); color: #fff; border: 1px solid var(--line-dark); box-shadow: 0 6px 20px rgba(0,0,0,.22);
  opacity: 0; visibility: hidden; transform: translateY(10px);
  transition: opacity .25s, transform .25s, visibility .25s, background .15s;
}
.to-top.show { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { background: var(--accent); border-color: var(--accent); }
.to-top svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; }

/* Pied de page */
.site-footer { background: var(--ink); color: var(--on-dark-muted); border-top: 1px solid var(--line-dark); padding: 56px 0 28px; font-size: 15px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 32px; }
.footer-tag { margin-top: 14px; }
.site-footer h3 { color: var(--on-dark); font-size: 14px; font-weight: 600; letter-spacing: 0; margin-bottom: 12px; }
.site-footer li + li { margin-top: 6px; }
.site-footer a { text-decoration: none; }
.site-footer a:hover { color: #fff; }
.footer-bottom { margin-top: 44px; padding-top: 20px; border-top: 1px solid var(--line-dark); font-size: 13.5px; }
@media (max-width: 680px) { .footer-grid { grid-template-columns: 1fr 1fr; } .footer-grid > div:first-child { grid-column: 1 / -1; } }

/* Mentions légales */
.legal { padding: calc(var(--header-h) + 64px) 0 96px; }
.legal .wrap { max-width: 780px; }
.legal h1 { font-size: clamp(32px, 4vw, 44px); margin-bottom: 36px; }
.legal h2 { font-size: 20px; margin: 36px 0 10px; }
.legal p { color: var(--muted); }