:root {
  --bg: #ffffff;
  --bg-alt: #f5f6f7;
  --surface: #ffffff;
  --surface-soft: #f0f2f4;
  --surface-dark: #050505;
  --surface-dark-alt: #090909;
  --surface-dark-card: rgba(18, 20, 24, 0.88);
  --accent: #76b900;
  --accent-strong: #8fd11d;
  --accent-soft: rgba(118, 185, 0, 0.12);
  --text: #101418;
  --muted: #525960;
  --text-on-dark: #f5f7fa;
  --muted-on-dark: #b2bac4;
  --border: rgba(16, 20, 24, 0.1);
  --border-dark: rgba(255, 255, 255, 0.12);
  --shadow-soft: 0 18px 36px rgba(0, 0, 0, 0.08);
  --shadow-strong: 0 24px 60px rgba(0, 0, 0, 0.18);
  --radius-xl: 1.75rem;
  --radius-lg: 1rem;
  --radius-pill: 999px;
  --transition: 220ms ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", "Segoe UI", sans-serif;
  line-height: 1.65;
}

h1,
h2,
h3,
h4,
.nav-links a,
.btn,
.filter-btn,
.stat-number {
  font-family: "Archivo", "Inter", sans-serif;
}

a {
  color: inherit;
}

.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

.nav-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
}

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

.logo-image {
  display: block;
  height: 54px;
  width: auto;
  object-fit: contain;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  position: relative;
  font-size: 0.96rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  text-decoration: none;
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.45rem;
  width: 100%;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.nav-links a:hover::after {
  transform: scaleX(1);
}

.nav-toggle {
  display: none;
  border: none;
  background: transparent;
  color: var(--text);
  font-size: 1.5rem;
}

.section {
  padding: 5.6rem 0;
}

.section-alt {
  background:
    linear-gradient(180deg, rgba(118, 185, 0, 0.04), transparent 14rem),
    #f3f5f3;
}

.section-title {
  margin: 0 0 0.7rem;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.05;
  text-align: center;
  letter-spacing: -0.03em;
}

.section-title::after {
  content: "";
  display: block;
  width: 88px;
  height: 4px;
  margin: 1rem auto 0;
  background: var(--accent);
}

.section-subtitle {
  max-width: 720px;
  margin: 0 auto 2.8rem;
  text-align: center;
  color: var(--muted);
  font-size: 1.02rem;
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 0;
}

.hero-slider {
  position: relative;
  z-index: 1;
  max-width: none;
  padding-inline: 0;
  padding-bottom: 2rem;
}

.hero-slides {
  position: relative;
}

.hero-slide {
  display: none;
  position: relative;
  background-position: center right;
  background-repeat: no-repeat;
  background-size: cover;
}

.hero-slide.is-active {
  display: block;
}

.hero-slide-strategie {
  background-image:
    linear-gradient(90deg, rgba(2, 3, 2, 0.96) 0%, rgba(2, 3, 2, 0.9) 38%, rgba(2, 3, 2, 0.62) 62%, rgba(2, 3, 2, 0.34) 100%),
    url("assets/hero/ingenierie-principale.jpg");
  background-position: center center;
}

.hero-slide-digital {
  background-image:
    linear-gradient(90deg, rgba(2, 3, 2, 0.96) 0%, rgba(2, 3, 2, 0.9) 38%, rgba(2, 3, 2, 0.62) 62%, rgba(2, 3, 2, 0.34) 100%),
    url("assets/hero/ingenierie-principale.jpg");
  background-position: center center;
}

.hero-slide-infrastructure {
  background-image:
    linear-gradient(90deg, rgba(2, 3, 2, 0.96) 0%, rgba(2, 3, 2, 0.9) 38%, rgba(2, 3, 2, 0.62) 62%, rgba(2, 3, 2, 0.34) 100%),
    url("assets/hero/ingenierie-principale.jpg");
  background-position: center center;
}

.hero-nvidia {
  background:
    radial-gradient(circle at 20% 18%, rgba(118, 185, 0, 0.16), transparent 28%),
    linear-gradient(90deg, #030303 0%, #030303 54%, #0a0a0a 100%);
}

.hero-nvidia::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(5, 5, 5, 0.92) 0%, rgba(5, 5, 5, 0.88) 50%, rgba(5, 5, 5, 0.46) 100%),
    linear-gradient(135deg, transparent 60%, rgba(118, 185, 0, 0.1) 100%);
  pointer-events: none;
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(360px, 0.7fr);
  gap: 2.5rem;
  align-items: stretch;
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  min-height: 720px;
  padding: 5.6rem 1.5rem 4.6rem;
}

.hero-eyebrow {
  display: inline-block;
  margin-bottom: 1rem;
  color: var(--accent);
  font-family: "Archivo", "Inter", sans-serif;
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-text,
.hero-card,
.card,
.process-step,
.highlight,
.contact-form,
.chip,
.footer-grid > div {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 700ms ease, transform 700ms ease;
}

.hero-text.is-visible,
.hero-card.is-visible,
.card.is-visible,
.process-step.is-visible,
.highlight.is-visible,
.contact-form.is-visible,
.chip.is-visible,
.footer-grid > div.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.hero-text {
  display: flex;
  flex-direction: column;
  justify-content: center;
  max-width: 720px;
}

.hero-text h1 {
  margin: 0 0 1.5rem;
  color: var(--text-on-dark);
  font-size: clamp(3rem, 5.8vw, 5.2rem);
  line-height: 0.98;
  letter-spacing: -0.05em;
  text-transform: none;
}

.hero-text p {
  max-width: 640px;
  margin: 0;
  color: var(--muted-on-dark);
  font-size: clamp(1.05rem, 1.8vw, 1.5rem);
}

.hero-text strong {
  color: var(--text-on-dark);
  font-weight: 700;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin: 2.2rem 0 1.5rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 56px;
  padding: 0.9rem 1.5rem;
  border-radius: 0;
  border: 1px solid transparent;
  font-size: 1rem;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition: transform var(--transition), background var(--transition), border-color var(--transition), color var(--transition), box-shadow var(--transition);
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--accent);
  color: #060606;
  box-shadow: 0 14px 34px rgba(118, 185, 0, 0.22);
}

.btn-primary:hover {
  background: var(--accent-strong);
}

.btn-outline {
  background: transparent;
  border-color: var(--border-dark);
  color: var(--text-on-dark);
}

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.btn-block {
  width: 100%;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.hero-badges span {
  padding: 0.45rem 0.9rem;
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-pill);
  color: var(--muted-on-dark);
  font-size: 0.84rem;
  background: rgba(255, 255, 255, 0.02);
}

.hero-card {
  display: flex;
  align-items: flex-end;
}

.hero-slider-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: 1240px;
  margin: -1.2rem auto 0;
  padding: 0 1.5rem;
}

.hero-slider-arrow {
  width: 52px;
  height: 52px;
  border: 1px solid var(--border-dark);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-on-dark);
  font-size: 2rem;
  line-height: 1;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition), color var(--transition), transform var(--transition);
}

.hero-slider-arrow:hover {
  background: rgba(118, 185, 0, 0.16);
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-1px);
}

.hero-slider-dots {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.8rem;
  flex: 1;
}

.hero-slider-dot {
  width: min(100%, 160px);
  max-width: 160px;
  height: 4px;
  padding: 0;
  border: none;
  background: rgba(255, 255, 255, 0.18);
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
}

.hero-slider-dot.is-active {
  background: var(--accent);
  transform: scaleY(1.2);
}

.hero-card-inner {
  width: 100%;
  margin-top: auto;
  padding: 2rem;
  border: 1px solid var(--border-dark);
  border-top: 4px solid var(--accent);
  background: rgba(10, 10, 10, 0.88);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-strong);
}

.hero-card-media {
  position: relative;
  margin: -2rem -2rem 1.5rem;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-bottom: 1px solid var(--border-dark);
  background: #111;
}

.hero-card-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.08), rgba(0, 0, 0, 0.34));
  pointer-events: none;
}

.hero-card-image {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-card-inner h2 {
  margin: 0 0 1rem;
  color: var(--text-on-dark);
  font-size: 2rem;
  line-height: 1.05;
}

.hero-card-inner ul {
  margin: 0 0 1.6rem;
  padding-left: 1.2rem;
  color: var(--muted-on-dark);
  font-size: 1.02rem;
}

.hero-card-inner li + li {
  margin-top: 0.55rem;
}

.hero-stat-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.hero-stat {
  padding: 1.25rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-dark);
}

.stat-number {
  display: block;
  margin-bottom: 0.35rem;
  color: var(--accent);
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 800;
}

.stat-label {
  color: var(--muted-on-dark);
  font-size: 0.95rem;
}

.about-grid,
.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
  gap: 2rem;
}

.about-grid p,
.contact-info p,
.service-card p,
.service-card ul,
.process-step p,
.highlight p {
  color: var(--muted);
}

.about-highlights {
  display: grid;
  gap: 1rem;
}

.highlight,
.card,
.contact-form,
.process-step {
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-soft);
}

.highlight,
.card,
.process-step {
  position: relative;
}

.highlight::before,
.card::before,
.process-step::before,
.contact-form::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 72px;
  height: 4px;
  background: var(--accent);
}

.highlight {
  padding: 1.4rem;
}

.service-filters {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.7rem;
  margin-bottom: 2rem;
}

.filter-btn {
  border: 1px solid rgba(0, 0, 0, 0.1);
  background: #ffffff;
  color: var(--text);
  padding: 0.75rem 1rem;
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition);
}

.filter-btn.active,
.filter-btn:hover {
  background: #0b0b0b;
  border-color: #0b0b0b;
  color: var(--accent);
  transform: translateY(-1px);
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.4rem;
}

.card {
  padding: 1.45rem;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.service-card {
  overflow: hidden;
}

.service-card-media {
  margin: -1.45rem -1.45rem 1.15rem;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
  background: #e9ecef;
}

.service-card-image {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.electronique-card-media .service-card-image {
  object-fit: contain;
  background: #f5f5f5;
}

.civil-card-gallery {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 3px;
  background: #111;
}

.civil-card-gallery .service-card-image:first-child {
  grid-row: auto;
}

.civil-card-gallery .service-card-image {
  min-width: 0;
  min-height: 0;
}

.education-card-media .service-card-image {
  object-fit: contain;
  padding: 0.65rem;
  background: #ffffff;
}

.card:hover {
  transform: translateY(-6px);
  border-color: rgba(118, 185, 0, 0.45);
  box-shadow: 0 22px 40px rgba(0, 0, 0, 0.12);
}

.service-card h3,
.process-step h3,
.highlight h3 {
  margin: 0 0 0.5rem;
  font-family: Arial, "Helvetica Neue", Helvetica, sans-serif;
  font-size: 1.25rem;
  line-height: 1.12;
}

.service-card ul {
  margin: 0;
  padding-left: 1.1rem;
}

.chips-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.8rem;
  margin-bottom: 2.6rem;
}

.chip {
  padding: 0.55rem 0.95rem;
  border: 1px solid rgba(0, 0, 0, 0.1);
  background: #ffffff;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text);
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.4rem;
}

.process-step {
  padding: 1.6rem 1.4rem 1.3rem;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  margin-bottom: 1rem;
  background: #080808;
  color: var(--accent);
  font-family: "Archivo", sans-serif;
  font-size: 0.92rem;
  font-weight: 800;
}

.contact-info a {
  color: var(--accent);
  text-decoration: none;
}

.contact-simple-note {
  margin-top: 0.85rem;
  padding-left: 1rem;
  border-left: 3px solid var(--accent);
  color: var(--muted);
}

.contact-form {
  position: relative;
  padding: 1.7rem;
}

.form-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.form-group {
  margin-bottom: 1rem;
}

label {
  display: block;
  margin-bottom: 0.4rem;
  font-size: 0.86rem;
  font-weight: 600;
}

input,
select,
textarea {
  width: 100%;
  padding: 0.82rem 0.9rem;
  border: 1px solid rgba(0, 0, 0, 0.12);
  border-radius: 0;
  background: #ffffff;
  color: var(--text);
  font: inherit;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(118, 185, 0, 0.13);
}

input::placeholder,
textarea::placeholder {
  color: #98a0a8;
}

.form-status {
  margin-top: 0.8rem;
  font-size: 0.88rem;
}

.form-status.success {
  color: #2f7d08;
}

.form-status.error {
  color: #c62828;
}

.footer {
  background: #050505;
  color: var(--text-on-dark);
  border-top: 4px solid var(--accent);
  padding-top: 2.6rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1fr) minmax(0, 1fr);
  gap: 2rem;
  padding-bottom: 1.6rem;
}

.footer-logo-image {
  height: 62px;
}

.footer-text,
.footer-bottom-content {
  color: var(--muted-on-dark);
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0.6rem 0 0;
}

.footer-links li + li {
  margin-top: 0.35rem;
}

.footer-links a {
  color: var(--muted-on-dark);
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--accent);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 1rem 0 1.2rem;
}

.footer-bottom-content {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.84rem;
}

@media (max-width: 1080px) {
  .hero-grid,
  .about-grid,
  .contact-grid,
  .cards-grid,
  .process-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-grid {
    min-height: auto;
    padding: 4.8rem 1.5rem 3.8rem;
  }

  .hero-card {
    align-items: flex-start;
  }

  .hero-slider-controls {
    margin-top: 0;
  }

  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .nav-toggle {
    display: block;
  }

  .nav-links {
    position: absolute;
    top: 76px;
    right: 1rem;
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
    min-width: 220px;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.98);
    border: 1px solid rgba(0, 0, 0, 0.08);
    box-shadow: var(--shadow-soft);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-8px);
    transition: opacity var(--transition), transform var(--transition);
  }

  .nav-links.show {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .hero-text h1 {
    font-size: clamp(2.4rem, 11vw, 3.6rem);
  }

  .hero-text p {
    font-size: 1rem;
  }

  .hero-slider-controls {
    gap: 0.75rem;
  }

  .hero-slider-arrow {
    width: 46px;
    height: 46px;
  }

  .hero-slider-dot {
    max-width: 72px;
  }

  .hero-stat-grid,
  .form-row,
  .footer-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .footer-bottom-content {
    flex-direction: column;
    align-items: flex-start;
  }

  .logo-image {
    height: 46px;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}