/* ArnTechCloud : couleurs relevées sur le logo (marine #000c18, cyan #00d2f6, argent du nuage). */
@font-face { font-family: "Sora"; src: url("/assets/fonts/sora.woff2") format("woff2"); font-weight: 100 800; font-display: swap; }
@font-face { font-family: "Hanken Grotesk"; src: url("/assets/fonts/hanken-grotesk.woff2") format("woff2"); font-weight: 100 900; font-display: swap; }
@font-face { font-family: "JetBrains Mono"; src: url("/assets/fonts/jetbrains-mono-500.woff2") format("woff2"); font-weight: 500; font-display: swap; }

:root {
  --ink: #000c18;
  --ink-2: #031526;
  --surface: #06203a;
  --line: rgba(150, 205, 240, 0.17);
  --line-strong: rgba(150, 205, 240, 0.34);
  --text: #eef5fa;
  --muted: #a9bccd;
  --cyan: #00d2f6;
  --cyan-soft: #6fe3fb;
  --blue: #0a7fc4;
  --silver: #c9d3db;
  --display: "Sora", system-ui, sans-serif;
  --body: "Hanken Grotesk", system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
  --gutter: clamp(16px, 4vw, 40px);
  --radius: 14px;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--ink); color: var(--text); font: 400 1.0625rem/1.65 var(--body); -webkit-font-smoothing: antialiased; }
h1, h2, h3, p, ul, ol, dl, dd { margin: 0; padding: 0; }
ul, ol { list-style: none; }
img { display: block; max-width: 100%; }
a { color: inherit; }
:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; border-radius: 4px; }

h1, h2, h3 { font-family: var(--display); text-wrap: balance; }
h1 { font-size: clamp(2.5rem, 6.4vw, 5.25rem); line-height: 1.04; letter-spacing: -0.035em; font-weight: 600; }
h2 { font-size: clamp(1.9rem, 3.8vw, 3.1rem); line-height: 1.1; letter-spacing: -0.028em; font-weight: 600; }
h3 { font-size: 1.15rem; line-height: 1.3; letter-spacing: -0.01em; font-weight: 600; }

.wrap { width: min(1200px, 100%); margin-inline: auto; padding-inline: var(--gutter); }
.skip { position: absolute; left: 12px; top: -60px; z-index: 100; padding: 10px 16px; background: var(--cyan); color: var(--ink); border-radius: 8px; font-weight: 600; }
.skip:focus { top: 12px; }
.label { font: 500 0.78rem/1.4 var(--mono); letter-spacing: 0.06em; color: var(--cyan); }
.intro { margin-top: 20px; max-width: 62ch; color: var(--muted); font-size: 1.125rem; }
.n { font: 500 0.8rem/1 var(--mono); color: var(--cyan); }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }

/* Boutons */
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 12px 22px; border-radius: 10px; background: var(--cyan); color: var(--ink); font-weight: 600; text-decoration: none; text-align: center; transition: background 0.2s, border-color 0.2s, transform 0.2s; }
.btn:hover { background: var(--cyan-soft); transform: translateY(-1px); }
.btn-ghost { background: rgba(0, 12, 24, 0.5); color: var(--text); box-shadow: inset 0 0 0 1px var(--line-strong); }
.btn-ghost:hover { background: rgba(0, 210, 246, 0.1); }
.btn-dark { background: var(--ink); color: var(--text); overflow-wrap: anywhere; }
.btn-dark:hover { background: var(--ink-2); }
.btn-sm { min-height: 40px; padding: 8px 16px; font-size: 0.94rem; }

/* En-tête */
.top { position: sticky; top: 0; z-index: 50; background: rgba(0, 12, 24, 0.82); backdrop-filter: blur(14px); border-bottom: 1px solid var(--line); }
.top-in { display: flex; align-items: center; justify-content: space-between; gap: 20px; min-height: 68px; }
.brand { display: flex; align-items: center; gap: 8px; text-decoration: none; font: 600 1.08rem var(--display); letter-spacing: -0.02em; flex: none; }
.brand img { width: 48px; height: auto; }
.brand b { font-weight: 600; color: var(--cyan); }
.links { display: flex; gap: 24px; font-size: 0.95rem; color: var(--muted); }
.links a { text-decoration: none; white-space: nowrap; transition: color 0.2s; }
.links a:hover { color: var(--text); }
.top-end { display: flex; align-items: center; gap: 14px; }
.top-cta { white-space: nowrap; }
.lang { display: flex; gap: 2px; font: 500 0.78rem var(--mono); }
.lang a { padding: 7px 8px; border-radius: 6px; color: var(--muted); text-decoration: none; }
.lang a:hover { color: var(--text); }
.lang a[aria-current] { color: var(--cyan); }

.burger { display: none; position: relative; }
.burger summary { list-style: none; display: grid; place-content: center; gap: 6px; width: 44px; height: 44px; cursor: pointer; border-radius: 8px; box-shadow: inset 0 0 0 1px var(--line-strong); }
.burger summary::-webkit-details-marker { display: none; }
.burger summary span { display: block; width: 18px; height: 2px; background: var(--text); transition: transform 0.2s; }
.burger[open] summary span:first-child { transform: translateY(4px) rotate(45deg); }
.burger[open] summary span:last-child { transform: translateY(-4px) rotate(-45deg); }
.burger-nav { position: absolute; right: 0; top: 54px; display: grid; min-width: 240px; padding: 8px; background: var(--ink-2); border: 1px solid var(--line-strong); border-radius: var(--radius); }
.burger-nav a { padding: 12px; text-decoration: none; border-radius: 8px; }
.burger-nav a:hover { background: var(--surface); }
.burger-nav a:last-child { color: var(--cyan); }

/* Hero */
.hero { position: relative; overflow: hidden; padding-block: clamp(56px, 8vw, 104px) 32px; isolation: isolate; }
.hero::before { content: ""; position: absolute; inset: 0; z-index: -2; background: radial-gradient(60% 55% at 78% 12%, rgba(10, 127, 196, 0.32), transparent 70%), radial-gradient(45% 45% at 6% 92%, rgba(0, 210, 246, 0.1), transparent 70%); }
.mesh { position: absolute; inset: 0; z-index: -1; width: 100%; height: 100%; mask-image: linear-gradient(#000 72%, transparent); }
.hero-in { display: grid; gap: 24px; justify-items: start; }
.hero h1 { max-width: 15ch; }
.lead { max-width: 58ch; font-size: clamp(1.1rem, 1.6vw, 1.28rem); line-height: 1.55; color: #d2dfe9; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 8px; }
.facts { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: clamp(56px, 7vw, 88px); border-top: 1px solid var(--line-strong); background: linear-gradient(rgba(0, 12, 24, 0.72), rgba(0, 12, 24, 0.5)); }
.facts li { display: grid; gap: 2px; padding: 18px 18px 6px 0; }
.facts li + li { padding-left: 18px; border-left: 1px solid var(--line); }
.facts strong { font: 600 1.02rem/1.3 var(--display); letter-spacing: -0.01em; }
.facts span { font-size: 0.94rem; color: var(--muted); }

/* Sections */
.sec { padding-block: clamp(72px, 10vw, 128px); }
.sec-alt { background: var(--ink-2); border-block: 1px solid var(--line); }
.sec .label { margin-bottom: 14px; }
.split { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(36px, 6vw, 88px); align-items: start; }
.split-head { position: sticky; top: 104px; }

/* Enjeux */
.stakes { width: 100%; border-collapse: collapse; text-align: left; }
.stakes thead th { padding: 0 0 12px; font: 500 0.78rem/1.4 var(--mono); letter-spacing: 0.06em; color: var(--muted); }
.stakes thead th + th, .stakes td { padding-left: 24px; }
.stakes tbody tr { border-top: 1px solid var(--line); }
.stakes tbody th { width: 38%; padding: 20px 0; vertical-align: top; font: 600 1.05rem/1.35 var(--display); letter-spacing: -0.01em; }
.stakes td { padding-block: 20px; color: var(--muted); vertical-align: top; }

/* Accompagnement et pilotage */
.pillars { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; margin-top: clamp(40px, 6vw, 64px); }
.pillar { padding: clamp(24px, 3vw, 36px); background: var(--ink); border: 1px solid var(--line-strong); border-radius: var(--radius); }
.pillar:last-child { border-color: var(--cyan); background: linear-gradient(160deg, rgba(0, 210, 246, 0.14), var(--ink) 60%); }
.pillar h3 { font-size: clamp(1.4rem, 2.2vw, 1.75rem); }
.pillar > p { margin-top: 10px; color: var(--muted); }
.pillar dl { margin-top: 20px; }
.pillar dl > div { display: grid; grid-template-columns: 7.5em minmax(0, 1fr); gap: 12px; padding-block: 11px; border-top: 1px solid var(--line); }
.pillar dt { font: 500 0.84rem/1.7 var(--mono); color: var(--cyan); }
.pillar dd { font-size: 0.98rem; }

/* Services */
.services { display: grid; grid-template-columns: repeat(3, 1fr); gap: 48px 36px; margin-top: clamp(40px, 6vw, 64px); }
.services > li { display: grid; align-content: start; gap: 10px; padding-top: 18px; border-top: 1px solid var(--line-strong); }
.services h3 { font-size: 1.28rem; }
.services > li > p { color: var(--muted); }
.ticks { display: grid; gap: 7px; margin-top: 8px; font-size: 0.97rem; }
.ticks li { position: relative; padding-left: 18px; }
.ticks li::before { content: ""; position: absolute; left: 0; top: 0.68em; width: 8px; height: 2px; background: var(--cyan); }

/* Architecture */
.arch { margin-top: clamp(32px, 5vw, 56px); }
.tabs { display: inline-flex; gap: 4px; padding: 4px; background: var(--ink-2); border: 1px solid var(--line-strong); border-radius: 12px; }
.tabs button { min-height: 44px; padding: 8px 22px; border: 0; border-radius: 8px; background: transparent; color: var(--muted); font: 600 0.98rem var(--display); cursor: pointer; transition: background 0.2s, color 0.2s; }
.tabs button:hover { color: var(--text); }
.tabs button[aria-selected="true"] { background: var(--cyan); color: var(--ink); }
.arch-grid { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: clamp(28px, 5vw, 64px); margin-top: 28px; align-items: start; }
.map { position: relative; display: grid; gap: 8px; padding: 16px; background: var(--ink-2); border: 1px solid var(--line); border-radius: var(--radius); }
.map::after { content: ""; position: absolute; top: 16px; bottom: 16px; left: 50%; border-left: 1px dashed var(--line-strong); pointer-events: none; }
.zones { display: grid; grid-template-columns: 1fr 1fr; margin-bottom: 4px; font: 500 0.78rem/1.4 var(--mono); letter-spacing: 0.05em; color: var(--muted); }
.zones span { padding-inline: 8px; }
.track { position: relative; height: 54px; }
.chip { position: absolute; inset-block: 0; left: 0; width: calc(50% - 6px); display: flex; align-items: center; justify-content: center; padding: 4px 10px; border-radius: 9px; background: var(--surface); box-shadow: inset 0 0 0 1px var(--line-strong); font-size: 0.93rem; font-weight: 500; line-height: 1.2; text-align: center; transition: transform 0.45s cubic-bezier(0.3, 0.8, 0.3, 1), width 0.45s cubic-bezier(0.3, 0.8, 0.3, 1), background 0.3s, box-shadow 0.3s; z-index: 1; }
.chip[data-place="local"] { background: linear-gradient(rgba(0, 210, 246, 0.14), rgba(0, 210, 246, 0.14)), var(--ink-2); box-shadow: inset 0 0 0 1px rgba(0, 210, 246, 0.6); }
.chip[data-place="cloud"] { transform: translateX(calc(100% + 12px)); background: linear-gradient(rgba(201, 211, 219, 0.1), rgba(201, 211, 219, 0.1)), var(--ink-2); box-shadow: inset 0 0 0 1px rgba(201, 211, 219, 0.5); }
.chip[data-place="both"] { width: 100%; background: linear-gradient(90deg, rgba(0, 210, 246, 0.16), rgba(201, 211, 219, 0.12)), var(--ink-2); box-shadow: inset 0 0 0 1px rgba(150, 215, 240, 0.55); }
.panel-sum { font: 600 clamp(1.25rem, 2.2vw, 1.6rem)/1.28 var(--display); letter-spacing: -0.02em; text-wrap: balance; }
.panel dl { display: grid; gap: 6px; margin-top: 24px; }
.panel dt { font: 500 0.78rem/1.4 var(--mono); letter-spacing: 0.05em; color: var(--cyan); }
.panel dd { margin-bottom: 16px; color: var(--muted); }
.panel:focus-visible { outline-offset: 8px; }

/* Parcours */
.about { margin-top: 36px; padding-top: 20px; border-top: 1px solid var(--line-strong); }
.about p { margin-top: 8px; color: var(--muted); }
.strata { display: grid; gap: 6px; }
.strata > li { display: grid; gap: 8px; padding: 22px 24px; border-radius: 10px; background: rgba(6, 32, 58, 0.55); box-shadow: inset 0 0 0 1px var(--line); }
.strata > li:first-child { background: linear-gradient(115deg, rgba(0, 210, 246, 0.24), rgba(10, 127, 196, 0.14)); box-shadow: inset 0 0 0 1px rgba(0, 210, 246, 0.6), 0 12px 50px rgba(0, 210, 246, 0.14); }
.strata > li:last-child { background: var(--surface); box-shadow: inset 0 0 0 1px var(--line-strong); }
.strata p { color: var(--muted); font-size: 1rem; }
.strata > li:first-child p { color: #d5e6f0; }
.tags { display: flex; flex-wrap: wrap; gap: 5px 14px; font: 500 0.78rem/1.5 var(--mono); color: var(--silver); }
.strata > li:first-child .tags { color: var(--cyan-soft); }

/* Méthode */
.steps { display: grid; grid-template-columns: repeat(5, 1fr); margin-top: clamp(40px, 6vw, 64px); counter-reset: s; border-top: 1px solid var(--line-strong); }
.steps li { position: relative; display: grid; align-content: start; gap: 10px; padding: 22px 22px 0 0; }
.steps li::before { content: ""; position: absolute; top: -5px; left: 0; width: 9px; height: 9px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 14px var(--cyan); }
.steps p { color: var(--muted); font-size: 1rem; }

/* Offres */
.offers { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: clamp(40px, 6vw, 64px); }
.offer { display: grid; align-content: start; gap: 10px; padding: 28px 26px 30px; background: var(--ink); border: 1px solid var(--line-strong); border-radius: var(--radius); }
.offer .label { margin: 0; }
.offer h3 { font-size: 1.4rem; }
.offer > p:not(.label) { color: var(--muted); }
.offer-on { border-color: var(--cyan); background: linear-gradient(170deg, rgba(0, 210, 246, 0.13), var(--ink) 62%); }
.note { margin-top: 22px; color: var(--muted); }

/* Contact */
.contact { background: linear-gradient(110deg, var(--cyan), #36a9e8 58%, var(--silver)); color: var(--ink); padding-block: clamp(56px, 8vw, 96px); }
.contact-in { display: flex; align-items: center; justify-content: space-between; gap: 32px; flex-wrap: wrap; }
.contact-in > div { max-width: 62ch; }
.contact h2 { font-size: clamp(2.1rem, 4.6vw, 3.6rem); }
.contact p { margin-top: 14px; font-size: 1.15rem; line-height: 1.5; }
.contact .contact-area { margin-top: 6px; font-size: 1rem; }

/* Pied de page */
.foot { padding-block: 28px; font-size: 0.92rem; color: var(--muted); }
.foot-in { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 28px; }
.foot-tag { font: 500 0.78rem/1.9 var(--mono); }
.foot a:hover { color: var(--text); }

/* Pages simples */
.page h1 { font-size: clamp(2.1rem, 5vw, 3.4rem); margin-bottom: 20px; }
.page h2 { font-size: 1.5rem; margin: 44px 0 14px; }
.page h3 { margin-top: 22px; }
.page p { margin-top: 6px; color: var(--muted); }
.page p:has(.btn) { margin-top: 36px; }
.narrow { width: min(760px, 100%); }
.facts-list { display: grid; grid-template-columns: max-content 1fr; gap: 10px 24px; }
.facts-list dt { color: var(--muted); }

/* Tablette */
@media (max-width: 1120px) {
  .links { display: none; }
  .burger { display: block; }
  .top-cta { display: none; }
}
@media (max-width: 960px) {
  .split, .arch-grid { grid-template-columns: minmax(0, 1fr); }
  .split-head { position: static; }
  .services { grid-template-columns: repeat(2, 1fr); }
  .pillars { grid-template-columns: minmax(0, 1fr); }
  .offers { grid-template-columns: minmax(0, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); row-gap: 28px; border-top: 0; }
  .steps li { border-top: 1px solid var(--line-strong); }
  .facts { grid-template-columns: repeat(2, 1fr); }
  .facts li:nth-child(3) { padding-left: 0; border-left: 0; }
  .facts li:nth-child(n + 3) { border-top: 1px solid var(--line); }
}
/* Téléphone */
@media (max-width: 620px) {
  body { font-size: 1rem; }
  .services { grid-template-columns: minmax(0, 1fr); }
  .steps { grid-template-columns: minmax(0, 1fr); }
  .tabs { display: flex; }
  .tabs button { flex: 1; padding-inline: 8px; }
  .map { padding: 10px; }
  .map::after { top: 10px; bottom: 10px; }
  .chip { font-size: 0.84rem; padding-inline: 6px; }
  .stakes thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
  .stakes, .stakes tbody, .stakes tr, .stakes tbody th, .stakes td { display: block; width: 100%; }
  .stakes tbody th { padding: 18px 0 4px; }
  .stakes td { padding: 0 0 18px; }
  .strata > li { padding: 18px; }
  .brand span { font-size: 1rem; }
  .facts-list { grid-template-columns: minmax(0, 1fr); gap: 2px; }
  .facts-list dd { margin-bottom: 12px; }
  .contact .btn { width: 100%; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}