/* =========================================================
   FAN SAN INDUSTRIE — design system
   Palette : orange industriel #F47421, blanc, graphite, acier
   Typo     : Archivo (titres, condensé/large) + Inter (texte)
   Principe : grille précise, angles droits, accent orange
              utilisé avec parcimonie (tag, trait, icône).
   ========================================================= */

:root {
  --orange: #F47421;
  --orange-dark: #C85A10;
  --white: #FFFFFF;
  --paper: #FAF9F7;
  --ink: #1F2226;
  --ink-soft: #2C2F35;
  --steel: #5B6067;
  --steel-light: #8A8F97;
  --line: #E3E0DA;
  --line-dark: #3A3D43;

  --font-display: "Archivo", "Arial Narrow", sans-serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: "IBM Plex Mono", "SFMono-Regular", monospace;

  --max-width: 1240px;
  --gutter: clamp(1.25rem, 3vw, 2.5rem);
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--white);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

a { color: inherit; text-decoration: none; }

.container {
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.08;
  margin: 0 0 0.5em;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2.4rem, 5vw, 4.2rem); font-weight: 800; }
h2 { font-size: clamp(1.8rem, 3.2vw, 2.6rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.5rem); }

p { margin: 0 0 1em; color: var(--steel); max-width: 62ch; }

.lede { font-size: 1.15rem; color: var(--ink-soft); max-width: 46ch; }

/* focus visibility */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.85rem 1.6rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color .15s ease, color .15s ease, border-color .15s ease;
}
.btn-primary { background: var(--orange); color: var(--white); }
.btn-primary:hover { background: var(--orange-dark); }
.btn-outline { background: transparent; border-color: var(--line-dark); color: var(--ink); }
.btn-outline:hover { border-color: var(--orange); color: var(--orange); }
.btn-outline-light { background: transparent; border-color: rgba(255,255,255,.4); color: var(--white); }
.btn-outline-light:hover { border-color: var(--orange); color: var(--orange); }

/* ---------- header ---------- */
.site-header {
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  background: var(--white);
  z-index: 50;
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 84px;
}
.brand img { height: 34px; width: auto; }

.main-nav { display: flex; align-items: center; gap: 2.2rem; }
.main-nav ul { list-style: none; display: flex; gap: 2rem; margin: 0; padding: 0; }
.main-nav a {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--ink-soft);
  padding-bottom: 4px;
  border-bottom: 2px solid transparent;
}
.main-nav a:hover, .main-nav a.active { color: var(--ink); border-color: var(--orange); }
.nav-phone {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--ink);
  border-left: 1px solid var(--line);
  padding-left: 1.5rem;
}

.nav-toggle { display: none; }

@media (max-width: 880px) {
  .main-nav { position: fixed; inset: 84px 0 0 0; background: var(--white);
    flex-direction: column; align-items: flex-start; padding: 2rem var(--gutter);
    transform: translateY(-8px); opacity: 0; pointer-events: none;
    transition: opacity .18s ease, transform .18s ease; }
  .main-nav ul { flex-direction: column; gap: 1.4rem; }
  .nav-toggle:checked ~ .main-nav { opacity: 1; transform: translateY(0); pointer-events: auto; }
  .nav-label { display: flex; flex-direction: column; gap: 5px; cursor: pointer; z-index: 60; }
  .nav-label span { width: 24px; height: 2px; background: var(--ink); }
}
@media (min-width: 881px) { .nav-label { display: none; } }

/* ---------- hero ---------- */
.hero {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: stretch;
  border-bottom: 1px solid var(--line);
}
.hero-copy {
  padding: clamp(3rem, 7vw, 6rem) var(--gutter);
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--orange);
  margin-bottom: 1.2rem;
}
.hero-actions { display: flex; gap: 1rem; margin-top: 1.8rem; flex-wrap: wrap; }
.hero-media { position: relative; min-height: 340px; overflow: hidden; background: var(--ink); }
.hero-media img { width: 100%; height: 100%; object-fit: cover; }
.hero-media figcaption {
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: 1rem var(--gutter);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: rgba(255,255,255,.85);
  background: linear-gradient(0deg, rgba(0,0,0,.55), transparent);
}
@media (max-width: 880px) {
  .hero { grid-template-columns: 1fr; }
  .hero-media { min-height: 260px; }
}

/* ---------- sections ---------- */
.section { padding-block: clamp(3rem, 6vw, 5.5rem); }
.section-alt { background: var(--paper); }
.section-dark { background: var(--ink); color: var(--white); }
.section-dark p { color: rgba(255,255,255,.68); }
.section-dark h2, .section-dark h3 { color: var(--white); }

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 2rem;
  margin-bottom: 2.4rem;
  flex-wrap: wrap;
}
.section-tag {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--orange);
  display: block;
  margin-bottom: 0.6rem;
}

/* ---------- domain / activity blocks ---------- */
.domains { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.domain-card { background: var(--white); padding: clamp(1.8rem, 3vw, 2.8rem); }
.domain-card .index { font-family: var(--font-mono); color: var(--steel-light); font-size: 0.85rem; }
.domain-card ul { margin: 1.2rem 0 0; padding: 0; list-style: none; }
.domain-card li {
  position: relative;
  padding-left: 1.1rem;
  margin-bottom: 0.55rem;
  color: var(--ink-soft);
  font-size: 0.96rem;
}
.domain-card li::before {
  content: "";
  position: absolute; left: 0; top: 0.5em;
  width: 6px; height: 6px; background: var(--orange);
}
@media (max-width: 720px) { .domains { grid-template-columns: 1fr; } }

/* ---------- product / category grid ---------- */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
@media (max-width: 980px) { .grid-3 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .grid-3, .grid-2 { grid-template-columns: 1fr; } }

.card {
  border: 1px solid var(--line);
  background: var(--white);
  display: flex;
  flex-direction: column;
  transition: border-color .15s ease;
}
.card:hover { border-color: var(--orange); }
.card-media { aspect-ratio: 4/3; background: var(--paper); overflow: hidden; border-bottom: 1px solid var(--line); display:flex; align-items:center; justify-content:center; }
.card-media img { width: 100%; height: 100%; object-fit: cover; }
.card-media .placeholder { font-family: var(--font-mono); font-size: 0.75rem; color: var(--steel-light); }
.card-body { padding: 1.4rem 1.5rem 1.6rem; display: flex; flex-direction: column; flex: 1; }
.card-eyebrow { font-family: var(--font-mono); font-size: 0.72rem; color: var(--orange); margin-bottom: 0.5rem; }
.card-body h3 { margin-bottom: 0.5rem; }
.card-body p { font-size: 0.92rem; margin-bottom: 1rem; }
.card-link { margin-top: auto; font-weight: 600; font-size: 0.88rem; color: var(--ink); border-bottom: 1px solid var(--orange); align-self: flex-start; padding-bottom: 2px; }

/* ---------- engagements list ---------- */
.engagements { display: grid; grid-template-columns: repeat(5, 1fr); gap: 1.25rem; }
.engagement { border-top: 3px solid var(--orange); padding-top: 1rem; }
.engagement h3 { font-size: 1.02rem; margin-bottom: 0.4rem; }
.engagement p { font-size: 0.88rem; }
@media (max-width: 980px) { .engagements { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .engagements { grid-template-columns: 1fr; } }

/* ---------- partners strip ---------- */
.partners-strip { display: flex; flex-wrap: wrap; gap: 1px; background: var(--line); border: 1px solid var(--line); }
.partner-tile {
  flex: 1 1 180px;
  background: var(--white);
  padding: 1.6rem;
  display: flex; align-items: center; justify-content: center;
  min-height: 96px;
}
.partner-tile img { max-height: 40px; width: auto; filter: grayscale(1); opacity: .75; transition: opacity .15s ease, filter .15s ease; }
.partner-tile:hover img { filter: grayscale(0); opacity: 1; }
.partner-tile .fallback { font-family: var(--font-mono); font-size: 0.82rem; color: var(--steel); text-align:center; }

/* ---------- partner cards (page /partenaires) ---------- */
.partner-card { border: 1px solid var(--line); padding: 1.6rem; }
.partner-card .cat { font-family: var(--font-mono); font-size: 0.72rem; color: var(--orange); display:block; margin-bottom: .6rem;}
.partner-card .meta { font-size: 0.85rem; color: var(--steel-light); }

/* ---------- CTA band ---------- */
.cta-band {
  display: flex; align-items: center; justify-content: space-between;
  gap: 2rem; flex-wrap: wrap;
  padding: clamp(2.5rem, 5vw, 4rem) var(--gutter);
  background: var(--ink);
  color: var(--white);
}
.cta-band h2 { color: var(--white); margin-bottom: 0.3rem; }
.cta-band p { color: rgba(255,255,255,.65); margin-bottom: 0; }

/* ---------- breadcrumb ---------- */
.crumbs { font-family: var(--font-mono); font-size: 0.78rem; color: var(--steel-light); margin-bottom: 1.6rem; }
.crumbs a { color: var(--steel); border-bottom: 1px dotted var(--steel-light); }
.crumbs a:hover { color: var(--orange); }

/* ---------- category detail sidebar layout ---------- */
.catalog-layout { display: grid; grid-template-columns: 260px 1fr; gap: 2.5rem; align-items: start; }
.category-nav { border: 1px solid var(--line); position: sticky; top: 100px; }
.category-nav a { display: block; padding: 0.85rem 1.1rem; font-size: 0.92rem; border-bottom: 1px solid var(--line); color: var(--ink-soft); }
.category-nav a:last-child { border-bottom: none; }
.category-nav a.active { color: var(--orange); font-weight: 600; background: var(--paper); }
.category-nav a:hover { color: var(--orange); }
@media (max-width: 880px) { .catalog-layout { grid-template-columns: 1fr; } .category-nav { position: static; } }

/* ---------- product detail ---------- */
.product-detail { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: clamp(2rem, 4vw, 4rem); align-items: start; }
.product-detail .media { border: 1px solid var(--line); aspect-ratio: 1/1; overflow: hidden; background: var(--paper); display:flex; align-items:center; justify-content:center; }
.product-detail .media img { width: 100%; height: 100%; object-fit: cover; }
.specs-table { width: 100%; border-collapse: collapse; margin-top: 1.5rem; font-family: var(--font-mono); font-size: 0.88rem; }
.specs-table tr { border-bottom: 1px solid var(--line); }
.specs-table td { padding: 0.7rem 0; }
.specs-table td:first-child { color: var(--steel-light); width: 45%; }
.specs-table td:last-child { color: var(--ink); text-align: right; }
@media (max-width: 880px) { .product-detail { grid-template-columns: 1fr; } }

/* ---------- forms ---------- */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; }
.form-grid .full { grid-column: 1 / -1; }
label { display: block; font-size: 0.85rem; font-weight: 600; margin-bottom: 0.4rem; color: var(--ink-soft); }
input, textarea, select {
  width: 100%;
  font-family: var(--font-body);
  font-size: 0.95rem;
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--line-dark);
  background: var(--white);
  color: var(--ink);
}
input::placeholder, textarea::placeholder { color: var(--steel-light); }
@media (max-width: 640px) { .form-grid { grid-template-columns: 1fr; } }

.alert { padding: 1rem 1.2rem; border-left: 3px solid var(--orange); background: var(--paper); margin-bottom: 1.6rem; font-size: 0.92rem; }

.contact-layout { display: grid; grid-template-columns: 1fr 1.3fr; gap: 3rem; align-items: start; }
.contact-info dl { display: grid; grid-template-columns: auto 1fr; gap: 0.6rem 1rem; font-size: 0.92rem; }
.contact-info dt { font-family: var(--font-mono); color: var(--steel-light); }
.contact-info dd { margin: 0; }
@media (max-width: 880px) { .contact-layout { grid-template-columns: 1fr; } }

/* ---------- footer ---------- */
.site-footer { background: var(--ink); color: rgba(255,255,255,.7); padding-block: 3.5rem 2rem; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 2.5rem; margin-bottom: 2.5rem; }
.footer-grid h4 { color: var(--white); font-family: var(--font-body); font-size: 0.85rem; text-transform: none; margin-bottom: 1rem; }
.footer-grid ul { list-style: none; margin: 0; padding: 0; }
.footer-grid li { margin-bottom: 0.6rem; font-size: 0.9rem; }
.footer-grid a:hover { color: var(--orange); }
.footer-brand img { height: 30px; margin-bottom: 1rem; }
.footer-brand p { font-size: 0.88rem; color: rgba(255,255,255,.55); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.12);
  padding-top: 1.4rem;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 1rem;
  font-size: 0.8rem; color: rgba(255,255,255,.45);
}
@media (max-width: 880px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .footer-grid { grid-template-columns: 1fr; } }

/* ---------- about page ---------- */
.about-hero { display: grid; grid-template-columns: 1fr; gap: 1.5rem; max-width: 780px; }
.mission-block { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; margin-top: 2rem; }
@media (max-width: 780px) { .mission-block { grid-template-columns: 1fr; } }

/* ---------- pagination ---------- */
.pagination { display: flex; gap: 0.5rem; margin-top: 2.5rem; font-family: var(--font-mono); font-size: 0.85rem; }
.pagination a, .pagination span { padding: 0.5rem 0.8rem; border: 1px solid var(--line); }
.pagination a:hover { border-color: var(--orange); color: var(--orange); }
.pagination .current { background: var(--ink); color: var(--white); border-color: var(--ink); }

/* ---------- empty states ---------- */
.empty-state { border: 1px dashed var(--line-dark); padding: 3rem 2rem; text-align: center; color: var(--steel); }