/* ============================================================
   ELEC ENGINEERING — Feuille de style
   ------------------------------------------------------------
   COMMENT MODIFIER FACILEMENT :
   1) Les couleurs et polices sont définies une seule fois en haut
      dans ":root" (variables CSS). Change une valeur ici et elle
      se répercute partout dans le site.
   2) Le fichier est découpé en sections clairement commentées
      (RESET, HEADER, HERO, SERVICES, etc.) — cherche le titre
      de la section que tu veux modifier.
   ============================================================ */

/* ---------- 1. VARIABLES DE DESIGN (à éditer en priorité) ---------- */
:root {
  /* Couleurs — reprises de ton logo actuel (vert profond + crème) */
  --ink: #12211d;              /* texte principal, quasi noir-vert */
  --ink-soft: #3d5148;         /* texte secondaire */
  --teal: #1f4d3e;             /* vert profond — couleur de marque */
  --teal-light: #2f6b57;       /* vert plus clair pour hover/accents */
  --copper: #c17a3f;           /* cuivre — clin d'œil au fil électrique */
  --paper: #f6f3ec;            /* fond crème principal */
  --paper-alt: #ede7d8;        /* fond crème plus soutenu (bandeaux) */
  --white: #fffdf9;
  --line: rgba(18, 33, 29, 0.14);

  /* Typographies (chargées depuis Google Fonts dans index.html) */
  --font-display: "Space Grotesk", "Arial Narrow", sans-serif; /* titres */
  --font-body: "Inter", -apple-system, sans-serif;             /* texte courant */
  --font-mono: "IBM Plex Mono", "Courier New", monospace;      /* labels / repères techniques */

  /* Échelle d'espacement */
  --gap-xs: 0.5rem;
  --gap-s: 1rem;
  --gap-m: 2rem;
  --gap-l: 4rem;
  --gap-xl: 8rem;

  --max-width: 1180px;
  --radius: 2px; /* le site reste anguleux, façon plan technique */
}

/* ---------- 2. RESET / BASE ---------- */
* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--gap-m);
}

section { position: relative; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--copper);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: var(--gap-s);
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--copper);
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--teal);
  line-height: 1.08;
  font-weight: 600;
  letter-spacing: -0.01em;
}

h2 {
  font-size: clamp(1.9rem, 3.4vw, 2.75rem);
  margin-bottom: var(--gap-m);
}

p { color: var(--ink-soft); }

.lede {
  font-size: 1.15rem;
  max-width: 62ch;
}

/* ---------- 3. HEADER / NAVIGATION ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(246, 243, 236, 0.88);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
}

.brand {
  display: flex;
  align-items: center;
}

.brand-logo {
  height: 34px;
  width: auto;
  display: block;
}

.nav-links {
  display: flex;
  gap: var(--gap-l);
  font-size: 0.92rem;
}

.nav-links a {
  position: relative;
  padding: 0.25rem 0;
  color: var(--ink);
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 1px;
  background: var(--copper);
  transition: width 0.25s ease;
}

.nav-links a:hover::after { width: 100%; }

.nav-cta {
  border: 1px solid var(--teal);
  padding: 0.5rem 1.1rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  transition: background 0.2s ease, color 0.2s ease;
}

.nav-cta:hover { background: var(--teal); color: var(--white); }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  flex-direction: column;
  gap: 5px;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--teal);
}

/* ---------- 4. HERO ---------- */
.hero {
  padding: calc(74px + var(--gap-xl)) 0 var(--gap-l);
  overflow: hidden;
  position: relative;
  /* Fond dégradé sombre — plus premium qu'une grille de plan, garde l'identité verte */
  background: radial-gradient(ellipse at 80% 20%, rgba(193, 122, 63, 0.18), transparent 55%),
              linear-gradient(155deg, #0e1c18 0%, var(--teal) 62%, var(--teal-light) 100%);
}

.hero,
.hero h1,
.hero .lede { color: var(--paper); }

.hero h1 span { color: var(--copper); }

/* Ligne de "scan" qui traverse la hero une fois au chargement — clin d'œil diagnostic/IT */
.hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(246, 243, 236, 0.6), transparent);
  animation: scan 2.6s ease-in-out 1;
  opacity: 0.8;
  pointer-events: none;
}

@keyframes scan {
  0% { top: 0; opacity: 0; }
  8% { opacity: 1; }
  92% { opacity: 1; }
  100% { top: 100%; opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .hero::after { display: none; }
}

.hero .container {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--gap-l);
  align-items: center;
  position: relative;
  z-index: 1;
}

/* Panneau "statut système" — renforce le côté technique / monitoring */
.hero-status {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(246, 243, 236, 0.85);
  border: 1px solid rgba(246, 243, 236, 0.22);
  background: rgba(246, 243, 236, 0.06);
  padding: 0.45rem 0.9rem;
  margin-bottom: var(--gap-m);
}

.hero-status .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--copper);
  animation: blink 1.8s ease-in-out infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.hero .btn-ghost {
  color: var(--paper);
  border-color: rgba(246, 243, 236, 0.4);
}

.hero .btn-ghost:hover {
  background: rgba(246, 243, 236, 0.1);
  color: var(--paper);
}

.hero-specs {
  margin-top: var(--gap-m);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid rgba(246, 243, 236, 0.18);
  background: rgba(246, 243, 236, 0.05);
  backdrop-filter: blur(6px);
}

.hero-specs div {
  padding: 0.7rem 0.9rem;
  border-right: 1px solid rgba(246, 243, 236, 0.18);
}

.hero-specs div:last-child { border-right: none; }

.hero-specs .k {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--copper);
  margin-bottom: 0.2rem;
}

.hero-specs .v {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--paper);
}

.hero h1 {
  font-size: clamp(2.4rem, 5vw, 4rem);
  margin-bottom: var(--gap-s);
}

.hero h1 span { color: var(--copper); }

.hero .lede { margin-bottom: var(--gap-m); }

.hero-actions {
  display: flex;
  gap: var(--gap-s);
  flex-wrap: wrap;
}

.btn {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  padding: 0.85rem 1.6rem;
  border: 1px solid var(--teal);
  transition: all 0.2s ease;
  display: inline-block;
}

.btn-primary { background: var(--teal); color: var(--white); }
.btn-primary:hover { background: var(--teal-light); border-color: var(--teal-light); }

.btn-ghost { color: var(--teal); }
.btn-ghost:hover { background: var(--teal); color: var(--white); }

/* Cadre qui accueille le logo — signature visuelle du site */
.hero-schema {
  aspect-ratio: 1 / 1;
  position: relative;
  border: 1px solid rgba(246, 243, 236, 0.18);
  background: rgba(246, 243, 236, 0.04);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12%;
}

/* Plaque claire derrière le logo : nécessaire car le logo est en vert
   foncé et se lirait mal directement sur le fond sombre de la hero */
.hero-logo-plate {
  width: 100%;
  background: var(--paper);
  border: 1px solid rgba(246, 243, 236, 0.4);
  padding: 12% 8%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.25);
}

.hero-logo-plate img {
  width: 100%;
  height: auto;
}

/* Coins façon viseur / plan technique, sur chaque angle du cadre */
.hero-schema::before,
.hero-schema::after {
  content: "";
  position: absolute;
  width: 18px;
  height: 18px;
  border: 2px solid var(--copper);
}

.hero-schema::before { top: -1px; left: -1px; border-right: none; border-bottom: none; }
.hero-schema::after { bottom: -1px; right: -1px; border-left: none; border-top: none; }

/* ---------- 5. STRIP DE CONFIANCE (références rapides) ---------- */
.trust-strip {
  background: var(--teal);
  color: var(--paper);
  padding: var(--gap-s) 0;
}

.trust-strip .container {
  display: flex;
  gap: var(--gap-l);
  flex-wrap: wrap;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  opacity: 0.9;
}

/* ---------- 6. ABOUT ---------- */
.about {
  padding: var(--gap-xl) 0;
}

.about .container {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: var(--gap-l);
}

.about-figures {
  display: grid;
  gap: var(--gap-s);
  align-content: start;
}

.figure-card {
  border: 1px solid var(--line);
  padding: var(--gap-s) var(--gap-m);
  background: var(--white);
}

.figure-card .num {
  font-family: var(--font-display);
  font-size: 2.2rem;
  color: var(--copper);
  line-height: 1;
}

.figure-card .label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--ink-soft);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-top: 0.3rem;
}

/* ---------- 7. SERVICES ---------- */
.services {
  padding: var(--gap-xl) 0;
  background: var(--paper-alt);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.services-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: var(--gap-m);
  margin-bottom: var(--gap-l);
  flex-wrap: wrap;
}

.service-group { margin-bottom: var(--gap-l); }
.service-group:last-child { margin-bottom: 0; }

.service-group-title {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--teal);
  border-bottom: 1px solid var(--line);
  padding-bottom: var(--gap-s);
  margin-bottom: var(--gap-m);
  display: flex;
  justify-content: space-between;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.service-card {
  background: var(--white);
  padding: var(--gap-m);
  position: relative;
  transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.service-card:hover {
  background: var(--white);
  transform: translateY(-3px);
  box-shadow: 0 14px 28px rgba(18, 33, 29, 0.1);
  z-index: 2;
}

/* Liseré supérieur qui s'active au survol — accent cuivre discret */
.service-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--copper);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}

.service-card:hover::before { transform: scaleX(1); }

.service-card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: var(--gap-s);
}

.service-icon {
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.service-icon svg {
  width: 22px;
  height: 22px;
  stroke: var(--teal);
  fill: none;
  stroke-width: 1.5;
}

.service-card:hover .service-icon {
  border-color: var(--copper);
  background: var(--paper);
}

.service-card .idx {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--copper);
  display: block;
  padding-top: 0.4rem;
}

.service-card h4 {
  font-size: 1.05rem;
  margin-bottom: 0.5rem;
}

.service-card p { font-size: 0.92rem; }

/* ---------- 8. RÉALISATIONS ---------- */
.projects { padding: var(--gap-xl) 0; }

.project {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: var(--gap-l);
  align-items: center;
  padding: var(--gap-l) 0;
  border-bottom: 1px solid var(--line);
}

.project:last-child { border-bottom: none; }
.project:nth-child(even) .project-media { order: 2; }

.project-media {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border: 1px solid var(--line);
}

.project-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(35%);
  transition: filter 0.3s ease;
}

.project-media:hover img { filter: grayscale(0%); }

.project-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--copper);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.6rem;
  display: block;
}

.project h3 { font-size: 1.5rem; margin-bottom: 0.8rem; }

.project-lists {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--gap-s);
  margin-top: var(--gap-s);
}

.project-lists h5 {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--teal);
  margin-bottom: 0.5rem;
}

.project-lists ul { list-style: none; font-size: 0.88rem; }

.project-lists li {
  padding-left: 1rem;
  position: relative;
  margin-bottom: 0.3rem;
  color: var(--ink-soft);
}

.project-lists li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--copper);
}

/* ---------- 9. CONTACT ---------- */
.contact {
  background: var(--teal);
  color: var(--paper);
  padding: var(--gap-xl) 0;
}

.contact .eyebrow { color: var(--copper); }
.contact .eyebrow::before { background: var(--copper); }

.contact h2 { color: var(--white); }

.contact .lede { color: rgba(246, 243, 236, 0.78); }

.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: var(--gap-l);
  align-items: end;
}

.contact-links {
  display: grid;
  gap: var(--gap-s);
}

.contact-link {
  border-top: 1px solid rgba(246, 243, 236, 0.2);
  padding: var(--gap-s) 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.95rem;
}

.contact-link:last-child { border-bottom: 1px solid rgba(246, 243, 236, 0.2); }

.contact-link span:first-child {
  color: rgba(246, 243, 236, 0.55);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.contact-link:hover span:last-child { color: var(--copper); }

/* ---------- 10. FOOTER ---------- */
.site-footer {
  background: var(--ink);
  color: rgba(246, 243, 236, 0.55);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: var(--gap-m) 0;
}

.site-footer .container {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--gap-s);
}

/* ---------- 11. RESPONSIVE ---------- */
@media (max-width: 900px) {
  .hero .container,
  .about .container,
  .project,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .project:nth-child(even) .project-media { order: 0; }

  .service-grid { grid-template-columns: 1fr; }

  .nav-links, .nav-cta { display: none; }
  .nav-toggle { display: flex; }

  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 74px;
    left: 0;
    right: 0;
    background: var(--paper);
    padding: var(--gap-m);
    border-bottom: 1px solid var(--line);
    gap: var(--gap-s);
  }

  .project-lists { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .about-figures { grid-template-columns: 1fr 1fr; }
}