/* ============================================================
   ELPHYTECH — Design System
   Rouge  : #E10600 / hover #B00000
   Noir   : #111111 / #1F1F1F / bg #0D0D0D
   Blanc  : #FFFFFF / #F5F5F5 / gris #E5E5E5 / texte #555
   ============================================================ */

:root {
  --red:         #E10600;
  --red-hover:   #B00000;
  --red-glow:    rgba(225, 6, 0, 0.20);
  --black:       #111111;
  --black-2:     #1F1F1F;
  --bg:          #0D0D0D;
  --white:       #FFFFFF;
  --white-off:   #F5F5F5;
  --gray-light:  #E5E5E5;
  --gray-text:   #555555;
  --muted:       #888888;
  --border:      rgba(255, 255, 255, 0.07);
  --font:        'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --radius:      14px;
  --radius-pill: 50px;
  --tr:          0.22s ease;
  --max-w:       1140px;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--white);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  line-height: 1.6;
}
img { display: block; max-width: 100%; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* ── Container ── */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 28px;
}

/* ── Typography ── */
h1 { font-size: clamp(36px, 5.5vw, 64px); font-weight: 800; line-height: 1.08; letter-spacing: -2px; }
h2 { font-size: clamp(28px, 3.5vw, 44px); font-weight: 700; line-height: 1.15; letter-spacing: -0.8px; }
h3 { font-size: 20px; font-weight: 600; line-height: 1.3; }
h4 { font-size: 17px; font-weight: 600; }
p  { line-height: 1.8; }

.eyebrow {
  display: inline-block;
  color: var(--red);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 4px;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.red-bar {
  width: 44px; height: 3px;
  background: var(--red);
  border-radius: 2px;
  margin-bottom: 24px;
}

/* ── Buttons ── */
.btn-red {
  display: inline-block;
  background: var(--red);
  color: #fff !important;
  padding: 14px 38px;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 15px;
  border: 2px solid var(--red);
  box-shadow: 0 4px 20px var(--red-glow);
  transition: background var(--tr), border-color var(--tr), transform var(--tr), box-shadow var(--tr);
}
.btn-red:hover {
  background: var(--red-hover);
  border-color: var(--red-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(225,6,0,0.35);
}
.btn-ghost {
  display: inline-block;
  background: transparent;
  color: var(--white) !important;
  padding: 14px 38px;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 15px;
  border: 2px solid rgba(255,255,255,0.18);
  transition: border-color var(--tr), background var(--tr), transform var(--tr);
}
.btn-ghost:hover {
  border-color: rgba(255,255,255,0.6);
  background: rgba(255,255,255,0.05);
  transform: translateY(-2px);
}
.btn-white {
  display: inline-block;
  background: var(--white);
  color: var(--red) !important;
  padding: 16px 48px;
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: 16px;
  border: 2px solid var(--white);
  transition: all var(--tr);
}
.btn-white:hover {
  background: transparent;
  color: var(--white) !important;
  transform: translateY(-2px);
}

/* ── Section head ── */
.section-head {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 56px;
}
.section-head .eyebrow { display: block; }
.section-head h2 { color: var(--white); margin-bottom: 14px; }
.section-head p { color: var(--muted); font-size: 16.5px; line-height: 1.75; }

/* ── Scroll animation : masqué UNIQUEMENT si JS actif ── */
.fade-up { transition: opacity 0.55s ease, transform 0.55s ease; }
.fade-up.delay-1 { transition-delay: 0.1s; }
.fade-up.delay-2 { transition-delay: 0.2s; }
.fade-up.delay-3 { transition-delay: 0.3s; }
.js .fade-up         { opacity: 0; transform: translateY(28px); }
.js .fade-up.visible { opacity: 1; transform: translateY(0); }

/* ============================================================
   HEADER
   ============================================================ */
#header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(13, 13, 13, 0.88);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border);
  transition: background var(--tr);
}
#header.scrolled { background: rgba(13, 13, 13, 0.98); }

#header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
  gap: 24px;
}

/* Logo – fond transparent sur header rouge */
.logo-pill {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}
.logo-pill img { height: 52px; width: auto; border-radius: 14px; }

nav { display: flex; align-items: center; gap: 36px; }
nav a {
  color: #aaa;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.2px;
  transition: color var(--tr);
  white-space: nowrap;
}
nav a:hover, nav a.active { color: var(--white); }

.header-cta { flex-shrink: 0; }

.menu-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--white);
  padding: 8px 10px;
  cursor: pointer;
  font-size: 18px;
  line-height: 1;
  transition: border-color var(--tr);
}
.menu-toggle:hover { border-color: var(--red); }

/* ============================================================
   HERO
   ============================================================ */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 130px 0 90px;
  position: relative;
  overflow: hidden;
  background: var(--bg);
}
.hero-glow {
  position: absolute;
  top: 40%; left: 50%;
  transform: translate(-50%, -50%);
  width: 1000px; height: 700px;
  background: radial-gradient(ellipse, rgba(225,6,0,0.08) 0%, transparent 62%);
  pointer-events: none;
}
/* Subtle grid pattern */
#hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}
#hero .container { text-align: center; position: relative; z-index: 1; }

#hero h1 { color: var(--white); margin-bottom: 24px; }
#hero h1 span { color: var(--red); }
#hero .hero-sub {
  color: var(--muted);
  font-size: 18px;
  max-width: 520px;
  margin: 0 auto 48px;
  line-height: 1.75;
}
.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================================================
   STATS
   ============================================================ */
#stats {
  background: var(--black);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 56px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1px 1fr 1px 1fr;
  align-items: center;
  gap: 0;
}
.stat { text-align: center; padding: 12px 32px; }
.stat-num {
  display: block;
  color: var(--red);
  font-size: 46px;
  font-weight: 800;
  letter-spacing: -2px;
  line-height: 1;
  margin-bottom: 8px;
}
.stat-label {
  color: var(--muted);
  font-size: 14px;
  font-weight: 500;
}
.stat-sep { background: var(--border); height: 64px; }

/* ============================================================
   ABOUT
   ============================================================ */
#about {
  padding: 110px 0;
  background: var(--bg);
}
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.about-text .eyebrow { display: block; }
.about-text h2 { color: var(--white); margin-bottom: 20px; }
.about-text p {
  color: #999;
  font-size: 16.5px;
  line-height: 1.85;
  margin-bottom: 36px;
}
.about-img-wrap {
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  line-height: 0;
}
.about-img-wrap img {
  width: 100%;
  height: 440px;
  object-fit: cover;
  object-position: center;
  border-radius: 20px;
}
/* Red corner accent */
.about-img-wrap::after {
  content: '';
  position: absolute;
  bottom: -2px; right: -2px;
  width: 80px; height: 80px;
  background: var(--red);
  border-radius: 20px 0 20px 0;
  opacity: 0.6;
}

/* ============================================================
   SERVICES
   ============================================================ */
#services {
  padding: 110px 0;
  background: var(--black);
}
.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.card {
  background: var(--black-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color var(--tr), transform var(--tr), box-shadow var(--tr);
}
.card:hover {
  border-color: var(--red);
  transform: translateY(-7px);
  box-shadow: 0 24px 56px rgba(0,0,0,0.55);
}
.card img {
  width: 100%;
  height: 210px;
  object-fit: cover;
  object-position: center;
}
.card-body {
  padding: 28px 28px 32px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.card-body h3 { color: var(--white); margin-bottom: 10px; }
.card-body p {
  color: #999;
  font-size: 14.5px;
  line-height: 1.7;
  margin-bottom: 20px;
  flex: 1;
}
.card-link {
  color: var(--red);
  font-size: 14px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  transition: gap var(--tr), color var(--tr);
}
.card-link:hover { gap: 10px; color: var(--red-hover); }

/* ============================================================
   POURQUOI NOUS
   ============================================================ */
#why {
  padding: 110px 0;
  background: var(--bg);
}
.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.why-card {
  background: var(--black);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: border-color var(--tr), transform var(--tr);
}
.why-card:hover {
  border-color: rgba(225, 6, 0, 0.35);
  transform: translateY(-4px);
}
.why-icon {
  width: 46px; height: 46px;
  background: rgba(225, 6, 0, 0.10);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 18px;
}
.why-card h4 { color: var(--white); margin-bottom: 10px; }
.why-card p { color: var(--muted); font-size: 14px; line-height: 1.65; }

/* ============================================================
   CTA
   ============================================================ */
#cta {
  padding: 80px 0;
  background: var(--black);
}
.cta-box {
  background: linear-gradient(135deg, #E10600 0%, #7A0000 100%);
  border-radius: 24px;
  padding: 90px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
/* Subtle shine */
.cta-box::before {
  content: '';
  position: absolute;
  top: -50%; left: -20%;
  width: 60%; height: 200%;
  background: rgba(255,255,255,0.04);
  transform: rotate(15deg);
  pointer-events: none;
}
.cta-box h2 { color: var(--white); margin-bottom: 16px; }
.cta-box p {
  color: rgba(255,255,255,0.75);
  font-size: 17.5px;
  max-width: 500px;
  margin: 0 auto 44px;
  line-height: 1.75;
}

/* ============================================================
   CONTACT
   ============================================================ */
#contact {
  padding: 110px 0;
  background: var(--bg);
}
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 80px;
  align-items: start;
}
.contact-info .eyebrow { display: block; }
.contact-info h2 { color: var(--white); margin-bottom: 16px; }
.contact-info p { color: #999; font-size: 16px; line-height: 1.8; margin-bottom: 40px; }
.contact-item {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 18px;
}
.contact-icon {
  width: 42px; height: 42px;
  background: rgba(225,6,0,0.10);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}
.contact-item span { color: #aaa; font-size: 15px; }
.contact-item a { color: #aaa; font-size: 15px; transition: color var(--tr); }
.contact-item a:hover { color: var(--red); }

/* Form */
.contact-form {
  background: var(--black);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 44px 40px;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  color: #bbb;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.3px;
  margin-bottom: 8px;
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  background: var(--black-2);
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: 10px;
  color: var(--white);
  font-family: var(--font);
  font-size: 15px;
  padding: 13px 16px;
  outline: none;
  transition: border-color var(--tr);
  resize: none;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: #555; }
.form-group input:focus,
.form-group textarea:focus { border-color: var(--red); }
.form-group textarea { height: 130px; }
.form-submit { width: 100%; cursor: pointer; font-family: var(--font); }

/* ============================================================
   FOOTER
   ============================================================ */
footer {
  background: #080808;
  border-top: 1px solid var(--border);
  padding: 72px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 56px;
  margin-bottom: 56px;
}
.footer-brand .logo-pill { margin-bottom: 20px; }
.footer-brand p { color: #555; font-size: 14px; line-height: 1.75; max-width: 280px; }
.footer-col h5 {
  color: var(--white-off);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 22px;
}
.footer-col li { margin-bottom: 11px; }
.footer-col li a { color: #555; font-size: 14px; transition: color var(--tr); }
.footer-col li a:hover { color: var(--red); }

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom p { color: #444; font-size: 13px; }
.footer-bottom a { color: #444; font-size: 13px; transition: color var(--tr); }
.footer-bottom a:hover { color: var(--red); }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 960px) {
  .about-grid    { grid-template-columns: 1fr; gap: 48px; }
  .cards-grid    { grid-template-columns: 1fr 1fr; }
  .why-grid      { grid-template-columns: 1fr 1fr; }
  .contact-grid  { grid-template-columns: 1fr; gap: 48px; }
  .footer-grid   { grid-template-columns: 1fr 1fr; }
  .about-img-wrap img { height: 320px; }
}
@media (max-width: 680px) {
  .stats-grid    { grid-template-columns: 1fr; }
  .stat-sep      { display: none; }
  .stat          { padding: 20px 16px; border-bottom: 1px solid var(--border); }
  .stat:last-child { border-bottom: none; }
  .cards-grid    { grid-template-columns: 1fr; }
  .why-grid      { grid-template-columns: 1fr; }
  .form-row      { grid-template-columns: 1fr; }
  .footer-grid   { grid-template-columns: 1fr; gap: 36px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .cta-box       { padding: 56px 28px; border-radius: 16px; }
  .contact-form  { padding: 32px 24px; }
  nav            { display: none; flex-direction: column; }
  nav.open       {
    display: flex;
    position: fixed;
    top: 74px; left: 0; right: 0;
    background: rgba(13,13,13,0.98);
    backdrop-filter: blur(18px);
    padding: 28px;
    gap: 20px;
    border-bottom: 1px solid var(--border);
    z-index: 99;
  }
  .header-cta    { display: none; }
  .menu-toggle   { display: block; }
}