/* SKO Services Conseils — feuille de style
   Couleurs, typographie et espacements dérivés de la charte de marque. */

@font-face { font-family: "Ubuntu Condensed"; src: url("../fonts/ubuntu-condensed-400.woff2") format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Ubuntu"; src: url("../fonts/ubuntu-400.woff2") format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Ubuntu"; src: url("../fonts/ubuntu-500.woff2") format("woff2"); font-weight: 500; font-display: swap; }
@font-face { font-family: "Ubuntu"; src: url("../fonts/ubuntu-700.woff2") format("woff2"); font-weight: 700; font-display: swap; }
@font-face { font-family: "Ubuntu Mono"; src: url("../fonts/ubuntu-mono-400.woff2") format("woff2"); font-weight: 400; font-display: swap; }

:root {
  --nuit: #142748;
  --indigo: #1F3A6E;
  --indigo-clair: #2E5090;
  --cuivre: #A85F2B;
  --cuivre-clair: #C98A4B;
  --encre: #16160F;
  --gris: #63625C;
  --papier: #FBFAF7;
  --papier-2: #F2EFE9;
  --blanc: #FFFFFF;

  --display: "Ubuntu Condensed", "Arial Narrow", sans-serif;
  --corps: "Ubuntu", system-ui, sans-serif;
  --mono: "Ubuntu Mono", ui-monospace, monospace;

  --wrap: 1140px;
  --pad: clamp(1.25rem, 4vw, 2.5rem);
  --sect: clamp(4rem, 9vw, 7.5rem);
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--papier);
  color: var(--encre);
  font-family: var(--corps);
  font-size: clamp(1rem, 0.96rem + 0.2vw, 1.0625rem);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img, svg { max-width: 100%; }
a { color: var(--indigo); }

.wrap { width: 100%; max-width: var(--wrap); margin-left: auto; margin-right: auto; padding-left: var(--pad); padding-right: var(--pad); }

.skip {
  position: absolute; left: -9999px; top: 0; z-index: 100;
  background: var(--cuivre); color: #fff; padding: 0.75rem 1.25rem; text-decoration: none;
}
.skip:focus { left: 0; }

:focus-visible { outline: 3px solid var(--cuivre); outline-offset: 3px; }

/* ── En-tête ───────────────────────────────────────────── */

.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(20, 39, 72, 0.94);
  backdrop-filter: blur(8px);
}
.header-inner { display: flex; align-items: center; gap: 1rem; min-height: 84px; }

.brand { display: flex; align-items: center; gap: 0.85rem; text-decoration: none; margin-right: auto; }
.brand-mark { width: 54px; height: 54px; flex: none; }
.brand-word { width: 66px; height: auto; flex: none; }
.brand-word .bw-nom { font-family: var(--corps); font-weight: 700; letter-spacing: -0.5px; }
.brand-word .bw-mot { font-family: var(--display); font-weight: 400; }

.nav { display: flex; align-items: center; gap: clamp(1rem, 2.4vw, 2rem); }
.nav a {
  font-family: var(--display); font-size: 1.05rem; letter-spacing: 0.05em;
  color: rgba(255,255,255,0.82); text-decoration: none; padding: 0.35rem 0;
  border-bottom: 2px solid transparent;
}
.nav a:hover { color: #fff; border-bottom-color: var(--cuivre-clair); }
.nav .nav-cta {
  border: 1px solid var(--cuivre-clair); border-radius: 2px;
  padding: 0.45rem 1rem; color: var(--cuivre-clair);
}
.nav .nav-cta:hover { background: var(--cuivre); border-color: var(--cuivre); color: #fff; }

.nav-toggle { display: none; }

/* ── Héro ──────────────────────────────────────────────── */

.hero { position: relative; background: var(--nuit); color: #fff; overflow: hidden; }
.hero-weave {
  position: absolute; inset: 0;
  background-image: url("../img/motif-fond.svg");
  background-size: 260px 260px;
  opacity: 0.5;
}
.hero-inner { position: relative; padding-top: clamp(4rem, 11vw, 8.5rem); padding-bottom: clamp(4rem, 11vw, 8.5rem); }

.eyebrow {
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.2em;
  text-transform: uppercase; color: var(--cuivre); margin: 0 0 1rem;
}
.eyebrow-light { color: var(--cuivre-clair); }

.hero-title {
  font-family: var(--display); font-weight: 400;
  font-size: clamp(2.6rem, 7.4vw, 5.25rem); line-height: 1.02;
  letter-spacing: 0.005em; margin: 0 0 1.5rem; max-width: 16ch;
}
.hero-title em { font-style: normal; color: var(--cuivre-clair); }

.hero-lede { max-width: 54ch; font-size: clamp(1.05rem, 1rem + 0.4vw, 1.25rem); color: rgba(255,255,255,0.88); margin: 0 0 2.25rem; }

.hero-actions { display: flex; flex-wrap: wrap; gap: 0.9rem; }

.btn {
  display: inline-block; font-family: var(--display); font-size: 1.1rem;
  letter-spacing: 0.05em; text-decoration: none; padding: 0.85rem 1.7rem;
  border-radius: 2px; border: 1px solid transparent; transition: background 0.18s, color 0.18s;
}
.btn-primary { background: var(--cuivre); color: #fff; }
.btn-primary:hover { background: var(--cuivre-clair); }
.btn-ghost { border-color: rgba(255,255,255,0.4); color: #fff; }
.btn-ghost:hover { background: rgba(255,255,255,0.12); }

/* ── Sections ──────────────────────────────────────────── */

.section { padding-top: var(--sect); padding-bottom: var(--sect); }
.section-title {
  font-family: var(--display); font-weight: 400;
  font-size: clamp(1.9rem, 4.2vw, 3rem); line-height: 1.1;
  margin: 0 0 1.1rem; max-width: 30ch; color: var(--indigo);
}
.section-title-light { color: #fff; }
.section-lede { max-width: 70ch; color: var(--gris); margin: 0 0 3rem; }

/* ── Services ──────────────────────────────────────────── */

.section-services { background: var(--papier); }

.poles { margin-top: 0.5rem; }
.pole { border-top: 1px solid #DAD6CC; padding: 2.25rem 0; display: grid; gap: 1rem 3rem; }
.pole:last-child { border-bottom: 1px solid #DAD6CC; }
@media (min-width: 860px) { .pole { grid-template-columns: minmax(240px, 320px) 1fr; } }
.pole-tete h3 { font-family: var(--display); font-weight: 400; font-size: 1.75rem; line-height: 1.15; margin: 0 0 0.45rem; color: var(--indigo); }
.pole-tete p { margin: 0; font-size: 0.95rem; color: var(--gris); }
.pole .services { margin-top: 0; }

.services { list-style: none; margin: 0; padding: 0; }
.services li { position: relative; padding: 0.3rem 0 0.3rem 1.1rem; font-size: 0.94rem; color: var(--gris); }
.services li::before { content: ""; position: absolute; left: 0; top: 0.95em; width: 6px; height: 6px; background: var(--cuivre-clair); }

/* ── Réalisations ──────────────────────────────────────── */

.section-realisations { background: var(--papier); }
.realisations { list-style: none; margin: 0; padding: 0; display: grid; gap: 1.5rem; }
@media (min-width: 820px) { .realisations { grid-template-columns: repeat(2, 1fr); } }

.realisation { border-left: 3px solid var(--cuivre-clair); padding: 0.2rem 0 0.2rem 1.4rem; }
.realisation-cadre { font-family: var(--mono); font-size: 0.66rem; letter-spacing: 0.13em; text-transform: uppercase; color: var(--cuivre); margin: 0 0 0.5rem; }
.realisation h3 { font-family: var(--display); font-weight: 400; font-size: 1.42rem; line-height: 1.2; margin: 0 0 0.55rem; color: var(--indigo); }
.realisation p:last-child { margin: 0; color: var(--gris); font-size: 0.97rem; }

/* ── Approche ──────────────────────────────────────────── */

.section-approche { background: var(--indigo); color: #fff; }
.steps { list-style: none; margin: 2.5rem 0 0; padding: 0; display: grid; gap: 2.5rem; }
@media (min-width: 800px) { .steps { grid-template-columns: repeat(3, 1fr); gap: 3rem; } }

.step { border-top: 2px solid var(--cuivre-clair); padding-top: 1.25rem; }
.step-num { font-family: var(--mono); font-size: 0.78rem; letter-spacing: 0.18em; color: var(--cuivre-clair); }
.step h3 { font-family: var(--display); font-weight: 400; font-size: 1.55rem; margin: 0.6rem 0 0.6rem; }
.step p { margin: 0; color: rgba(255,255,255,0.82); }

/* ── Le cabinet ────────────────────────────────────────── */

.cabinet-grid { display: grid; gap: clamp(2rem, 5vw, 4rem); }
@media (min-width: 860px) { .cabinet-grid { grid-template-columns: 1.5fr 1fr; align-items: start; } }
.cabinet-grid p { max-width: 60ch; color: var(--gris); }
.cabinet-grid strong { color: var(--encre); }

.cabinet-facts { background: var(--papier-2); padding: clamp(1.5rem, 3vw, 2.25rem); }
.cabinet-facts dl { margin: 0; display: grid; gap: 1.1rem; }
.cabinet-facts dt { font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--cuivre); }
.cabinet-facts dd { margin: 0.2rem 0 0; font-family: var(--display); font-size: 1.3rem; color: var(--indigo); }

/* ── Secteurs ──────────────────────────────────────────── */

.section-secteurs { background: var(--papier-2); }
.secteurs { list-style: none; margin: 0; padding: 0; display: grid; gap: 1.5rem; }
@media (min-width: 720px) { .secteurs { grid-template-columns: repeat(3, 1fr); } }

.secteur { background: var(--blanc); padding: 1.75rem 1.6rem; border-top: 3px solid var(--cuivre); }
.secteur h3 { font-family: var(--display); font-weight: 400; font-size: 1.5rem; margin: 0 0 0.55rem; color: var(--indigo); }
.secteur p { margin: 0; color: var(--gris); }

/* ── Certifications ────────────────────────────────────── */

.certifs { margin-top: 3.5rem; border-top: 1px solid rgba(31,58,110,0.18); padding-top: 2rem; }
.certifs-titre { font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--cuivre); margin: 0 0 1.5rem; }

.certifs-grille { display: grid; gap: 1.75rem 2rem; }
@media (min-width: 640px) { .certifs-grille { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1000px) { .certifs-grille { grid-template-columns: repeat(3, 1fr); } }

.certif-groupe h3 { font-family: var(--mono); font-size: 0.66rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--gris); margin: 0 0 0.6rem; font-weight: 400; }
.certif-groupe ul { list-style: none; margin: 0; padding: 0; }
.certif-groupe li { font-family: var(--display); font-size: 1.12rem; letter-spacing: 0.02em; color: var(--indigo); padding: 0.18rem 0; }

.certifs-note { margin: 2rem 0 0.75rem; max-width: 66ch; font-size: 0.95rem; color: var(--gris); }
.certifs-cadres { margin: 0; max-width: 66ch; font-size: 0.95rem; color: var(--gris); }
.certifs-cadres strong { color: var(--indigo); font-weight: 500; }

/* ── Contact ───────────────────────────────────────────── */

.section-contact { background: var(--nuit); color: #fff; }
.contact-grid { display: grid; gap: clamp(2rem, 5vw, 4rem); }
@media (min-width: 860px) { .contact-grid { grid-template-columns: 1.4fr 1fr; align-items: start; } }
.contact-lede { max-width: 46ch; color: rgba(255,255,255,0.85); margin: 0 0 2rem; }
.contact-details h3 { font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--cuivre-clair); margin: 0 0 0.5rem; }
.contact-details h3 + p { margin: 0 0 1.75rem; }
.contact-details p { color: rgba(255,255,255,0.88); }
.contact-details a { color: #fff; text-decoration-color: var(--cuivre-clair); text-underline-offset: 4px; }

/* ── Pied de page ──────────────────────────────────────── */

.site-footer { background: var(--encre); color: rgba(255,255,255,0.7); padding-top: 2.5rem; padding-bottom: 2.5rem; }
.footer-inner { display: flex; flex-wrap: wrap; gap: 0.75rem 2rem; justify-content: space-between; }
.footer-inner p { margin: 0; font-size: 0.9rem; }
.footer-brand { font-family: var(--display); letter-spacing: 0.04em; color: #fff; }

/* ── Navigation mobile ─────────────────────────────────── */

@media (max-width: 860px) {
  .nav-toggle {
    display: inline-flex; align-items: center; gap: 0.5rem;
    background: none; border: 1px solid rgba(255,255,255,0.35); border-radius: 2px;
    color: #fff; font-family: var(--display); font-size: 1rem; letter-spacing: 0.06em;
    padding: 0.5rem 0.9rem; cursor: pointer;
  }
  .nav-toggle-bars { width: 18px; height: 2px; background: currentColor; box-shadow: 0 -6px 0 currentColor, 0 6px 0 currentColor; }
  .nav {
    position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--nuit); padding: 0 var(--pad);
    max-height: 0; overflow: hidden; transition: max-height 0.25s ease;
  }
  .nav a { padding: 0.95rem 0; border-bottom: 1px solid rgba(255,255,255,0.12); }
  .nav .nav-cta { border: none; border-bottom: 1px solid rgba(255,255,255,0.12); padding-left: 0; padding-right: 0; }
  .site-header.is-open .nav { max-height: 22rem; padding-top: 0.5rem; padding-bottom: 1.25rem; }
}

/* ── Apparition au défilement ──────────────────────────── */

.reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .btn { transition: none; }
}