/* ---------- Tokens ---------- */
:root{
  --bg: #0B1520;
  --bg-alt: #0F1D2B;
  --surface: #16232F;
  --surface-2: #1E2A38;
  --text: #F5F7FA;
  --text-dim: #9FB0C0;
  --text-faint: #6B7C8C;
  --accent: #E8622C;
  --accent-2: #4FD1C5;
  --border: rgba(245,247,250,0.09);

  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --wrap: 1180px;
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }

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

body{
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.wrap{
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 28px;
}

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

::selection{ background: var(--accent); color: #0B1520; }

:focus-visible{
  outline: 2px solid var(--accent-2);
  outline-offset: 3px;
  border-radius: 3px;
}

/* ---------- Signal trace (signature element) ---------- */
.trace-line{
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 2px;
  z-index: 200;
  background: linear-gradient(90deg, transparent, var(--accent-2) 20%, var(--accent) 50%, var(--accent-2) 80%, transparent);
  background-size: 200% 100%;
  animation: trace-move 6s linear infinite;
  opacity: 0.85;
}
@keyframes trace-move{
  0%{ background-position: 200% 0; }
  100%{ background-position: -200% 0; }
}

/* ---------- Header ---------- */
.site-header{
  position: sticky;
  top: 2px;
  z-index: 100;
  background: rgba(11,21,32,0.82);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.header-inner{
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}
.logo{
  display: flex;
  align-items: center;
  gap: 10px;
}
.logo-text{
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.02em;
}
.logo-text em{
  font-style: normal;
  color: var(--accent);
}
.main-nav{
  display: flex;
  gap: 32px;
}
.main-nav a{
  font-size: 0.92rem;
  color: var(--text-dim);
  transition: color 0.15s ease;
}
.main-nav a:hover{ color: var(--text); }

.nav-toggle{
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 0;
  background: none;
  border: none;
  cursor: pointer;
  flex-shrink: 0;
}
.nav-toggle span{
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  transition: transform 0.25s ease, opacity 0.2s ease;
}
.nav-toggle.is-active span:nth-child(1){ transform: translateY(7px) rotate(45deg); }
.nav-toggle.is-active span:nth-child(2){ opacity: 0; }
.nav-toggle.is-active span:nth-child(3){ transform: translateY(-7px) rotate(-45deg); }

.mobile-nav{
  display: flex;
  flex-direction: column;
  gap: 4px;
  max-height: 0;
  overflow: hidden;
  background: var(--bg);
  border-bottom: 1px solid transparent;
  transition: max-height 0.3s ease, border-color 0.3s ease;
}
.mobile-nav.is-open{
  max-height: 600px;
  border-bottom-color: var(--border);
}
.mobile-nav a{
  padding: 14px 28px;
  font-size: 1rem;
  color: var(--text-dim);
  border-top: 1px solid var(--border);
}
.mobile-nav a:hover{ color: var(--text); background: var(--surface); }
.mobile-nav-cta{
  margin: 14px 28px 20px;
  border-top: none !important;
}

body.nav-open{ overflow: hidden; }

@media (max-width: 900px){
  .main-nav{ display: none; }
  .btn-nav{ display: none; }
  .nav-toggle{ display: flex; }
}
@media (min-width: 901px){
  .mobile-nav{ display: none; }
}

/* ---------- Buttons ---------- */
.btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 26px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.92rem;
  border-radius: 4px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease;
  white-space: nowrap;
}
.btn:hover{ transform: translateY(-1px); }
.btn-primary{
  background: var(--accent);
  color: #0B1520;
}
.btn-primary:hover{ background: #f27341; }
.btn-outline{
  border-color: var(--border);
  color: var(--text);
}
.btn-outline:hover{ border-color: var(--accent-2); color: var(--accent-2); }
.btn-ghost{
  border-color: var(--border);
  color: var(--text);
  padding: 10px 20px;
  font-size: 0.85rem;
}
.btn-ghost:hover{ border-color: var(--accent); color: var(--accent); }
.btn-nav{ flex-shrink: 0; }

/* ---------- Hero ---------- */
.hero{
  position: relative;
  padding: 120px 0 90px;
  overflow: hidden;
}
.hero-bg{
  position: absolute;
  inset: 0;
  z-index: 0;
}
.fiber-svg{
  width: 100%;
  height: 100%;
}
.fiber-path{
  fill: none;
  stroke-width: 1.4;
  opacity: 0.35;
}
.fiber-1{ stroke: var(--accent-2); stroke-dasharray: 6 10; animation: dash 40s linear infinite; }
.fiber-2{ stroke: var(--accent); stroke-dasharray: 4 12; animation: dash 55s linear infinite reverse; }
.fiber-3{ stroke: var(--accent-2); stroke-dasharray: 2 8; opacity: 0.2; animation: dash 70s linear infinite; }
@keyframes dash{
  to{ stroke-dashoffset: -1000; }
}

.hero-inner{
  position: relative;
  z-index: 1;
}
.eyebrow{
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  color: var(--accent-2);
  text-transform: uppercase;
  margin: 0 0 22px;
}
.hero h1{
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.1rem, 5vw, 3.6rem);
  line-height: 1.08;
  letter-spacing: -0.01em;
  margin: 0 0 24px;
  max-width: 15ch;
}
.accent-underline{
  position: relative;
  color: var(--accent);
}
.hero-lead{
  font-size: 1.08rem;
  color: var(--text-dim);
  max-width: 46ch;
  margin: 0 0 40px;
}
.hero-actions{
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 64px;
}
.hero-stats{
  display: grid;
  grid-template-columns: repeat(3, minmax(0,1fr));
  gap: 24px;
  max-width: 640px;
  margin: 0;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}
.hero-stats dt{
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-faint);
  margin-bottom: 6px;
}
.hero-stats dd{
  margin: 0;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text);
}

@media (max-width: 640px){
  .hero-stats{ grid-template-columns: 1fr; gap: 16px; }
}

/* ---------- Sections ---------- */
.section{
  padding: 100px 0;
}
.section-alt{
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.section-eyebrow{
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 16px;
}
.section-title{
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.6rem, 3.4vw, 2.4rem);
  line-height: 1.18;
  letter-spacing: -0.01em;
  margin: 0 0 56px;
  max-width: 20ch;
}

/* ---------- Product grid ---------- */
.product-grid{
  display: grid;
  grid-template-columns: repeat(3, minmax(0,1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}
.product-card{
  background: var(--bg);
  padding: 40px 32px;
}
.product-icon{
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 24px;
}
.product-card h3{
  font-family: var(--font-display);
  font-size: 1.25rem;
  margin: 0 0 12px;
}
.product-card > p{
  color: var(--text-dim);
  font-size: 0.94rem;
  margin: 0 0 20px;
}
.product-list{
  list-style: none;
  padding: 0;
  margin: 0;
  border-top: 1px solid var(--border);
  padding-top: 18px;
}
.product-list li{
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-faint);
  padding: 5px 0;
  padding-left: 16px;
  position: relative;
}
.product-list li::before{
  content: '';
  position: absolute;
  left: 0;
  top: 12px;
  width: 6px;
  height: 1px;
  background: var(--accent-2);
}

@media (max-width: 900px){
  .product-grid{ grid-template-columns: 1fr; }
}

/* ---------- Sectors ---------- */
.sector-row{
  display: grid;
  grid-template-columns: repeat(3, minmax(0,1fr));
  gap: 40px;
}
.sector-tag{
  display: block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-faint);
  margin-bottom: 14px;
}
.sector-item h3{
  font-family: var(--font-display);
  font-size: 1.1rem;
  margin: 0 0 10px;
}
.sector-item p{
  color: var(--text-dim);
  font-size: 0.92rem;
  margin: 0;
}

@media (max-width: 780px){
  .sector-row{ grid-template-columns: 1fr; gap: 32px; }
}

/* ---------- Process (commande) ---------- */
.process-row{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0,1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}
.process-step{
  background: var(--bg-alt);
  padding: 32px 28px;
  position: relative;
}
.process-num{
  display: block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
  margin-bottom: 16px;
}
.process-step h3{
  font-family: var(--font-display);
  font-size: 1.05rem;
  margin: 0 0 10px;
}
.process-step p{
  color: var(--text-dim);
  font-size: 0.9rem;
  margin: 0;
}

@media (max-width: 900px){
  .process-row{ grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px){
  .process-row{ grid-template-columns: 1fr; }
}

/* ---------- Testimonials (clients) ---------- */
.testimonial-grid{
  display: grid;
  grid-template-columns: repeat(3, minmax(0,1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}
.testimonial-card{
  margin: 0;
  padding: 32px 28px;
  background: var(--bg);
  border-top: 2px solid var(--accent-2);
}
.testimonial-card blockquote{
  margin: 0 0 22px;
  font-family: var(--font-display);
  font-size: 1.05rem;
  line-height: 1.45;
  color: var(--text);
}
.testimonial-card blockquote::before{ content: '“'; }
.testimonial-card blockquote::after{ content: '”'; }
.testimonial-card figcaption{
  display: flex;
  flex-direction: column;
  gap: 2px;
  font-size: 0.86rem;
}
.testimonial-name{ font-weight: 600; color: var(--text); }
.testimonial-role{ color: var(--text-faint); font-family: var(--font-mono); font-size: 0.78rem; }

@media (max-width: 900px){
  .testimonial-grid{ grid-template-columns: 1fr; }
}

/* ---------- FAQ ---------- */
.faq-list{
  max-width: 780px;
}
.faq-item{
  border-top: 1px solid var(--border);
  padding: 6px 0;
}
.faq-item:last-child{ border-bottom: 1px solid var(--border); }
.faq-item summary{
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 0;
  font-family: var(--font-display);
  font-size: 1.02rem;
  font-weight: 600;
  color: var(--text);
}
.faq-item summary::-webkit-details-marker{ display: none; }
.faq-item summary::after{
  content: '+';
  font-family: var(--font-mono);
  font-size: 1.2rem;
  color: var(--accent);
  flex-shrink: 0;
}
.faq-item[open] summary::after{ content: '−'; }
.faq-item p{
  margin: 0 0 20px;
  color: var(--text-dim);
  font-size: 0.94rem;
  max-width: 62ch;
}

/* ---------- Why us ---------- */
.why-grid{
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 64px;
}
.why-copy{ align-self: start; position: sticky; top: 110px; }
.why-lead{
  color: var(--text-dim);
  font-size: 1rem;
  max-width: 42ch;
}
.why-list{
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
}
.why-list li{
  display: flex;
  gap: 24px;
  padding: 28px 0;
  border-top: 1px solid var(--border);
}
.why-list li:last-child{ border-bottom: 1px solid var(--border); }
.why-num{
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent);
  flex-shrink: 0;
  padding-top: 2px;
}
.why-list h4{
  font-family: var(--font-display);
  font-size: 1.05rem;
  margin: 0 0 8px;
}
.why-list p{
  color: var(--text-dim);
  font-size: 0.92rem;
  margin: 0;
}

@media (max-width: 900px){
  .why-grid{ grid-template-columns: 1fr; gap: 32px; }
  .why-copy{ position: static; }
}

/* ---------- CTA / Contact ---------- */
.section-cta{
  background: var(--surface);
  border-top: 1px solid var(--border);
}
.cta-inner .section-title{ margin-bottom: 20px; }
.cta-inner .why-lead{ margin-bottom: 48px; }

.contact-grid{
  display: grid;
  grid-template-columns: repeat(3, minmax(0,1fr));
  gap: 16px;
}
.contact-card{
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 26px 24px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  transition: border-color 0.15s ease, transform 0.15s ease;
}
a.contact-card:hover{
  border-color: var(--accent-2);
  transform: translateY(-2px);
}
.contact-card-static{ cursor: default; }
.contact-label{
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-faint);
}
.contact-value{
  font-weight: 600;
  font-size: 1rem;
}

@media (max-width: 780px){
  .contact-grid{ grid-template-columns: 1fr; }
}

/* ---------- Footer ---------- */
.site-footer{
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  padding: 56px 0 0;
}
.footer-inner{
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 40px;
  padding-bottom: 40px;
}
.footer-brand p{
  color: var(--text-faint);
  font-size: 0.88rem;
  margin: 10px 0 0;
}
.footer-legal{
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-dim);
  line-height: 1.9;
}
.footer-legal p{ margin: 0; }
.footer-legal strong{ color: var(--text); }

.footer-bottom{
  border-top: 1px solid var(--border);
  padding: 22px 0;
}
.footer-bottom p{
  margin: 0;
  font-size: 0.8rem;
  color: var(--text-faint);
}

@media (max-width: 700px){
  .footer-inner{ grid-template-columns: 1fr; gap: 24px; }
}

/* ---------- Small-screen tuning ---------- */
@media (max-width: 600px){
  .wrap{ padding: 0 20px; }
  .hero{ padding: 96px 0 64px; }
  .hero-actions{ margin-bottom: 48px; }
  .hero-actions .btn{ width: 100%; }
  .section{ padding: 64px 0; }
  .section-title{ margin-bottom: 36px; }
  .product-card{ padding: 32px 24px; }
  .process-step{ padding: 26px 22px; }
  .header-inner{ height: 68px; }
}