/* ===== Reset & Variables ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --navy-dark: #0b1a3a;
  --navy: #12275c;
  --blue: #1e5fbf;
  --blue-light: #2f7ff2;
  --white: #ffffff;
  --off-white: #f4f7fc;
  --gray: #5b6478;
  --gray-light: #e6eaf2;
  --mali-green: #1a9c4a;
  --mali-gold: #f2c200;
  --mali-red: #e1362f;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(11, 26, 58, 0.12);
  --font-heading: 'Poppins', sans-serif;
  --font-body: 'Inter', sans-serif;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--navy-dark);
  line-height: 1.6;
  background: var(--white);
}

.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

h1, h2, h3, h4 { font-family: var(--font-heading); line-height: 1.2; }

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

/* ===== Buttons ===== */
.btn {
  display: inline-block;
  padding: 14px 30px;
  border-radius: 6px;
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
  border: none;
  cursor: pointer;
}
.btn-primary {
  background: linear-gradient(135deg, var(--blue-light), var(--blue));
  color: var(--white);
  box-shadow: 0 8px 20px rgba(30, 95, 191, 0.35);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 26px rgba(30, 95, 191, 0.45); }
.btn-ghost {
  background: rgba(255,255,255,0.12);
  color: var(--white);
  border: 1px solid rgba(255,255,255,0.4);
}
.btn-ghost:hover { background: rgba(255,255,255,0.22); }

/* ===== Top bar ===== */
.top-bar {
  background: var(--navy-dark);
  color: rgba(255,255,255,0.85);
}
.top-bar-inner {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  height: 38px;
  font-size: 0.8rem;
}
.top-bar-contacts { display: flex; gap: 24px; align-items: center; }
.top-bar-contacts a:hover { color: var(--mali-gold); }
.top-bar-location { color: rgba(255,255,255,0.6); }

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--gray-light);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 78px;
  gap: 24px;
}
.logo { display: flex; align-items: center; }
.logo-img { height: 60px; width: auto; }

.main-nav { display: flex; gap: 20px; flex: 1; justify-content: center; white-space: nowrap; }
.main-nav a {
  font-weight: 500;
  color: var(--navy);
  position: relative;
  padding: 6px 0;
}
.main-nav a::after {
  content: "";
  position: absolute;
  bottom: 0; left: 0;
  width: 0; height: 2px;
  background: var(--blue);
  transition: width 0.25s ease;
}
.main-nav a:hover::after { width: 100%; }

.nav-cta { white-space: nowrap; }

.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.burger span { width: 26px; height: 2px; background: var(--navy); border-radius: 2px; }

/* ===== Hero ===== */
.hero {
  position: relative;
  background: linear-gradient(120deg, var(--navy-dark) 0%, var(--navy) 45%, var(--blue) 100%);
  color: var(--white);
  overflow: hidden;
  padding: 120px 0 140px;
}
.hero-glow {
  position: absolute;
  width: 460px;
  height: 460px;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.4;
  z-index: 0;
  pointer-events: none;
  animation: heroFloatBlob 16s ease-in-out infinite;
}
.hero-glow-green { background: var(--mali-green); top: -140px; left: -120px; }
.hero-glow-gold { background: var(--mali-gold); top: 25%; left: 42%; opacity: 0.28; animation-duration: 20s; animation-delay: -5s; }
.hero-glow-red { background: var(--mali-red); bottom: -160px; right: -100px; animation-duration: 18s; animation-delay: -9s; }

@keyframes heroFloatBlob {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(34px, -28px) scale(1.1); }
}

.hero-watermark {
  position: absolute;
  top: 50%;
  right: -20px;
  transform: translateY(-50%);
  display: flex;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: clamp(160px, 20vw, 300px);
  line-height: 1;
  letter-spacing: -8px;
  opacity: 0.12;
  z-index: 0;
  pointer-events: none;
  user-select: none;
}
.wm-m { color: var(--mali-green); }
.wm-p { color: var(--mali-gold); }
.wm-s { color: var(--mali-red); }

.hero-float {
  position: absolute;
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.18);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--mali-gold);
  z-index: 1;
  animation: heroFloatIcon 6s ease-in-out infinite;
}
.hero-float svg { width: 26px; height: 26px; }
.hero-float-1 { top: 16%; right: 14%; }
.hero-float-2 { top: 60%; right: 24%; color: var(--mali-green); animation-delay: -2s; }
.hero-float-3 { top: 38%; right: 4%; color: var(--white); animation-delay: -4s; }
.hero-float-4 { top: 76%; right: 9%; color: var(--mali-red); animation-delay: -1s; }

@keyframes heroFloatIcon {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-16px); }
}

@media (prefers-reduced-motion: reduce) {
  .hero-glow, .hero-float { animation: none; }
}

@media (max-width: 900px) {
  .hero-float { display: none; }
  .hero-watermark { opacity: 0.07; }
}

.hero-inner { position: relative; z-index: 1; max-width: 700px; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.2);
  backdrop-filter: blur(6px);
  padding: 8px 20px;
  border-radius: 50px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--mali-gold);
  margin-bottom: 24px;
}
.hero-badge-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--mali-gold);
  box-shadow: 0 0 10px var(--mali-gold);
}

.hero h1 { font-size: clamp(2rem, 4.5vw, 3.2rem); font-weight: 700; margin-bottom: 20px; }
.text-gradient {
  background: linear-gradient(90deg, #ffffff, var(--mali-gold));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-desc { font-size: 1.05rem; color: rgba(255,255,255,0.85); max-width: 560px; margin-bottom: 36px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

.hero-chips { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 36px; }
.hero-chip {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.16);
  backdrop-filter: blur(6px);
  padding: 9px 18px;
  border-radius: 50px;
  font-size: 0.82rem;
  font-weight: 600;
  color: rgba(255,255,255,0.9);
}

/* ===== Section shared ===== */
section { padding: 100px 0; }
.section-eyebrow {
  text-transform: uppercase;
  letter-spacing: 3px;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--blue);
  margin-bottom: 10px;
  text-align: center;
}
.section-title {
  font-size: clamp(1.6rem, 3vw, 2.3rem);
  font-weight: 700;
  text-align: center;
  margin-bottom: 0;
  color: var(--navy-dark);
  position: relative;
  padding-bottom: 22px;
}
.section-title::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 56px;
  height: 3px;
  background: var(--mali-gold);
  border-radius: 2px;
}
.section-title + * { margin-top: 34px; }

/* ===== Services ===== */
.services { background: var(--off-white); }
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 28px;
}
.service-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 36px 28px;
  box-shadow: var(--shadow);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  border-top: 4px solid var(--blue);
}
.service-card:hover { transform: translateY(-6px); box-shadow: 0 16px 36px rgba(11,26,58,0.16); }
.service-card { display: flex; flex-direction: column; }
.service-icon {
  width: 48px; height: 48px;
  margin-bottom: 20px;
  color: var(--blue);
}
.service-icon svg { width: 100%; height: 100%; }
.service-card h3 { font-size: 1.2rem; margin-bottom: 12px; color: var(--navy-dark); }
.service-card p { color: var(--gray); font-size: 0.95rem; flex-grow: 1; }
.service-link {
  display: inline-block;
  margin-top: 20px;
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--blue);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  transition: color 0.2s ease, transform 0.2s ease;
}
.service-link:hover { color: var(--navy-dark); transform: translateX(3px); }

/* ===== Sub-services (Ingénierie zoom) ===== */
.sub-services { margin-top: 64px; }
.sub-services-title {
  text-align: center;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--navy-dark);
  margin-bottom: 28px;
}
.sub-services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
}
.sub-service-card {
  position: relative;
  height: 200px;
  border-radius: var(--radius);
  background-size: cover;
  background-position: center;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform 0.25s ease;
}
.sub-service-card:hover { transform: translateY(-4px); }
.sub-service-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: flex-end;
  padding: 18px;
  background: linear-gradient(180deg, rgba(11,26,58,0) 40%, rgba(11,26,58,0.85) 100%);
}
.sub-service-overlay h4 {
  color: var(--white);
  font-size: 1.05rem;
  font-weight: 600;
}
.sub-services-note {
  text-align: center;
  color: var(--gray);
  font-size: 0.85rem;
  margin-top: 20px;
  font-style: italic;
}
.sub-services-intro {
  text-align: center;
  color: var(--gray);
  margin-bottom: 24px;
}
.partner-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
}
.partner-badge {
  background: var(--white);
  border: 1px solid var(--gray-light);
  color: var(--navy);
  font-weight: 600;
  font-size: 0.9rem;
  padding: 12px 22px;
  border-radius: 50px;
  box-shadow: var(--shadow);
}
.partner-badge-more {
  background: transparent;
  border: 1px dashed var(--blue);
  color: var(--blue);
  font-style: italic;
  font-weight: 500;
  box-shadow: none;
}

/* ===== Partners section ===== */
.partners { background: var(--white); }
.partner-logo-card {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--white);
  border: 1px solid var(--gray-light);
  border-radius: 12px;
  padding: 12px 20px;
  height: 72px;
  box-shadow: var(--shadow);
  transition: transform 0.2s ease;
}
.partner-logo-card:hover { transform: translateY(-3px); }
.partner-logo-card img {
  max-height: 100%;
  max-width: 150px;
  object-fit: contain;
  border-radius: 6px;
}
.partner-logo-card-client {
  height: 88px;
  padding: 14px 28px;
  border-color: var(--blue);
}
.partner-logo-card-client img { max-width: 190px; }
.partners .sub-services-title { margin-bottom: 20px; }
.partners-secondary-title { margin-top: 48px; }
.partner-badge-client {
  font-size: 1.1rem;
  font-weight: 700;
  padding: 16px 32px;
  border-color: var(--blue);
  color: var(--navy-dark);
}
.partners-note {
  text-align: center;
  color: var(--gray);
  font-size: 0.9rem;
  margin-top: 30px;
}

/* ===== Stats strip ===== */
.stats {
  background: linear-gradient(120deg, var(--navy-dark) 0%, var(--navy) 100%);
  padding: 56px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 32px;
  text-align: center;
}
.stat-number {
  display: block;
  font-family: var(--font-heading);
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--mali-gold);
}
.stat-label {
  display: block;
  margin-top: 8px;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.8);
}

/* ===== Testimonials ===== */
.testimonials { background: var(--off-white); }
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}
.testimonial-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 32px;
  text-align: center;
}
.testimonial-card-placeholder {
  border: 2px dashed var(--gray-light);
  color: var(--gray);
  font-style: italic;
}
.testimonials-cta {
  display: block;
  width: fit-content;
  margin: 40px auto 0;
}
.btn-ghost-dark {
  background: transparent;
  color: var(--navy);
  border: 1px solid var(--navy);
}
.btn-ghost-dark:hover { background: var(--navy); color: var(--white); }

/* ===== FAQ ===== */
.faq { background: var(--white); }
.faq-list {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.faq-item {
  background: var(--off-white);
  border-radius: 10px;
  padding: 18px 24px;
}
.faq-item summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--navy-dark);
  list-style: none;
  position: relative;
  padding-right: 30px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 0; top: 0;
  font-size: 1.3rem;
  color: var(--blue);
  transition: transform 0.2s ease;
}
.faq-item[open] summary::after { content: "−"; }
.faq-item p { color: var(--gray); margin-top: 14px; font-size: 0.95rem; }

/* ===== Articles / Actualités ===== */
.articles { background: var(--off-white); }
.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 28px;
}
.articles-status {
  grid-column: 1 / -1;
  text-align: center;
  color: var(--gray);
}
.article-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.article-card:hover { transform: translateY(-6px); box-shadow: 0 16px 36px rgba(11,26,58,0.16); }
.article-card-img {
  height: 170px;
  background-size: cover;
  background-position: center;
}
.article-card-img-fallback {
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--navy-dark), var(--blue));
  font-size: 2.6rem;
}
.article-card-body { padding: 24px; display: flex; flex-direction: column; flex-grow: 1; }
.article-category {
  display: inline-block;
  align-self: flex-start;
  background: rgba(30,95,191,0.1);
  color: var(--blue);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 5px 12px;
  border-radius: 50px;
  margin-bottom: 14px;
}
.article-card-body h3 { font-size: 1.1rem; margin-bottom: 10px; color: var(--navy-dark); }
.article-card-body p { color: var(--gray); font-size: 0.92rem; flex-grow: 1; }
.article-read-more {
  align-self: flex-start;
  margin-top: 18px;
  background: none;
  border: none;
  padding: 0;
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--blue);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  cursor: pointer;
  transition: color 0.2s ease, transform 0.2s ease;
}
.article-read-more:hover { color: var(--navy-dark); transform: translateX(3px); }

/* ===== Article modal ===== */
.article-modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: none;
}
.article-modal.open { display: block; }
.article-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(11,26,58,0.6);
}
.article-modal-panel {
  position: relative;
  max-width: 700px;
  margin: 60px auto;
  background: var(--white);
  border-radius: var(--radius);
  padding: 40px;
  max-height: 80vh;
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}
.article-modal-close {
  position: absolute;
  top: 16px; right: 16px;
  width: 36px; height: 36px;
  border-radius: 50%;
  border: none;
  background: var(--off-white);
  color: var(--navy-dark);
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
}
.article-modal-close:hover { background: var(--gray-light); }
.article-modal-img {
  height: 220px;
  border-radius: 10px;
  background-size: cover;
  background-position: center;
  margin: 16px 0 24px;
}
.article-modal-img-fallback {
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--navy-dark), var(--blue));
  font-size: 3.5rem;
}
#article-modal-body h2 { font-size: 1.5rem; margin: 12px 0 8px; color: var(--navy-dark); }
.article-date { color: var(--gray); font-size: 0.85rem; }
#article-modal-body p { color: var(--gray); margin-bottom: 14px; }

/* ===== About ===== */
.about-inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 48px;
  align-items: start;
}
.about-text p { color: var(--gray); margin-bottom: 18px; }
.about-card {
  background: linear-gradient(135deg, var(--navy-dark), var(--blue));
  color: var(--white);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow);
}
.about-card h3 { margin-bottom: 18px; font-size: 1.15rem; }
.about-card li { padding: 8px 0; border-bottom: 1px solid rgba(255,255,255,0.15); }
.about-card li:last-child { border-bottom: none; }
.about-card li::before { content: "✔ "; color: var(--mali-gold); }

/* ===== Contact ===== */
.contact { background: var(--off-white); }
.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
}
.contact .section-eyebrow, .contact .section-title { text-align: left; }
.contact .section-title::after { left: 0; transform: none; }
.contact-item {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 18px;
  font-weight: 500;
}
.contact-icon { font-size: 1.2rem; }
.map-wrap {
  margin-top: 24px;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.contact-form {
  background: var(--white);
  border-radius: var(--radius);
  padding: 36px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.contact-form label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--navy);
}
.contact-form input,
.contact-form select,
.contact-form textarea {
  font-family: var(--font-body);
  padding: 12px 14px;
  border-radius: 8px;
  border: 1px solid var(--gray-light);
  font-size: 0.95rem;
  color: var(--navy-dark);
  background: var(--off-white);
}
.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--blue);
  background: var(--white);
}
.contact-form button { align-self: flex-start; margin-top: 6px; }

/* ===== Footer ===== */
.site-footer {
  background: var(--navy-dark);
  color: rgba(255,255,255,0.75);
  padding: 32px 0;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.9rem;
}
.footer-links { display: flex; gap: 20px; }
.footer-links a:hover { color: var(--white); }

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .about-inner, .contact-inner { grid-template-columns: 1fr; }
}

@media (max-width: 400px) {
  .logo-img { height: 48px; }
  .header-inner { gap: 12px; }
}

@media (max-width: 700px) {
  .top-bar-location { display: none; }
  .top-bar-contacts { gap: 14px; }
  .top-bar-inner { justify-content: center; }
}

@media (max-width: 460px) {
  .top-bar-contacts a:nth-child(2) { display: none; }
  .top-bar-inner { font-size: 0.72rem; }
}

@media (max-width: 980px) {
  .main-nav {
    position: absolute;
    top: 78px; left: 0; right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 20px 24px;
    gap: 18px;
    border-bottom: 1px solid var(--gray-light);
    display: none;
    box-shadow: var(--shadow);
    white-space: normal;
  }
  .main-nav.open { display: flex; }
  .nav-cta { display: none; }
  .burger { display: flex; }
  .hero { padding: 90px 0 100px; }
  section { padding: 70px 0; }
  .article-modal-panel { margin: 24px 16px; padding: 28px 20px; max-height: 88vh; }
}