/* ============================================================
   SérénIT38 — Charte graphique officielle
   Administrateur Systèmes & Réseaux — Isère
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@300;400;500;700&family=DM+Mono:wght@400;500&display=swap');

:root {
  --nuit:    #042C53;
  --marine:  #0C447C;
  --bleu:    #185FA5;
  --accent:  #378ADD;
  --clair:   #85B7EB;
  --pale:    #E6F1FB;
  --gris:    #888780;
  --gris-l:  #B4B2A9;
  --gris-ll: #F1EFE8;
  --blanc:   #FFFFFF;
  --texte:   #1A1A18;
  --texte-s: #5F5E5A;

  --radius:  10px;
  --radius-l:16px;
  --shadow:  0 2px 20px rgba(4,44,83,.08);
  --shadow-h:0 8px 40px rgba(4,44,83,.16);
  --font:    'DM Sans', sans-serif;
  --mono:    'DM Mono', monospace;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font);
  color: var(--texte);
  background: var(--blanc);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

/* ── Utilitaires ── */
.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }

/* ── Boutons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: var(--radius);
  font-family: var(--font);
  font-size: .9rem;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: all .2s ease;
  text-decoration: none;
}
.btn-primary {
  background: var(--bleu);
  color: var(--blanc);
}
.btn-primary:hover { background: var(--marine); transform: translateY(-1px); box-shadow: var(--shadow-h); }

.btn-outline {
  background: transparent;
  color: var(--bleu);
  border: 1.5px solid var(--bleu);
}
.btn-outline:hover { background: var(--pale); }

.btn-white {
  background: var(--blanc);
  color: var(--marine);
  font-weight: 700;
}
.btn-white:hover { background: var(--pale); transform: translateY(-1px); }

/* ── Navigation ── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(185,212,244,.3);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}
.nav-logo svg { width: 44px; height: 44px; }
.nav-logo-text { display: flex; flex-direction: column; line-height: 1.2; }
.nav-logo-name { font-size: 1.05rem; font-weight: 700; color: var(--marine); letter-spacing: -.02em; }
.nav-logo-sub  { font-size: .65rem; color: var(--gris); letter-spacing: .12em; text-transform: uppercase; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
}
.nav-links a {
  padding: 8px 14px;
  border-radius: 8px;
  font-size: .9rem;
  color: var(--texte-s);
  transition: all .15s;
}
.nav-links a:hover, .nav-links a.active { color: var(--bleu); background: var(--pale); }
.nav-links a.btn-primary:hover, .nav-links a.btn-primary.active { color: white; background: var(--bleu); }
.nav-cta { margin-left: 8px; }
.nav-links a.nav-cta,
.nav-links a.nav-cta:hover,
.nav-links a.nav-cta.active {
  background: var(--bleu) !important;
  color: #ffffff !important;
  font-weight: 600 !important;
  padding: 9px 18px !important;
  border-radius: 8px !important;
  box-shadow: 0 2px 8px rgba(24,95,165,0.25) !important;
}
.nav-links a.nav-cta:hover {
  background: var(--marine) !important;
  box-shadow: 0 4px 12px rgba(24,95,165,0.35) !important;
}
.nav-links a.nav-cta,
.nav-links a.nav-cta:hover,
.nav-links a.nav-cta.active {
  color: white !important;
  background: var(--bleu) !important;
}

.nav-burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-burger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--marine);
  border-radius: 2px;
  transition: all .3s;
}

/* ── Hero ── */
.hero {
  background: var(--nuit);
  color: var(--blanc);
  padding: 90px 0 80px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 0;
  background: linear-gradient(135deg, var(--nuit) 0%, var(--marine) 100%);
}
.hero-grid, .hero-inner, .container {
  position: relative;
  z-index: 1;
}
.hero-onde {
  position: absolute;
  right: -60px;
  top: 50%;
  transform: translateY(-50%);
  opacity: .08;
}
.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: 60px;
  align-items: center;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: rgba(55,138,221,.2);
  border: 1px solid rgba(55,138,221,.3);
  border-radius: 100px;
  font-size: .78rem;
  color: var(--clair);
  margin-bottom: 24px;
  font-family: var(--mono);
}
.hero-badge::before { content: ''; width: 7px; height: 7px; background: var(--accent); border-radius: 50%; animation: pulse 2s infinite; }
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:.4} }

.hero h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -.03em;
  margin-bottom: 20px;
}
.hero h1 span { color: var(--accent); }
.hero-desc {
  font-size: 1.05rem;
  color: var(--clair);
  line-height: 1.7;
  margin-bottom: 36px;
  max-width: 520px;
}
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }

.hero-card {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius-l);
  padding: 36px;
  backdrop-filter: blur(8px);
}
.hero-card-title {
  font-size: .7rem;
  text-transform: uppercase;
  letter-spacing: .15em;
  color: var(--clair);
  margin-bottom: 20px;
  font-family: var(--mono);
}
.hero-stat {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid rgba(255,255,255,.07);
}
.hero-stat:last-child { border-bottom: none; }
.hero-stat-num {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--blanc);
  min-width: 64px;
}
.hero-stat-num span { font-size: 1rem; color: var(--accent); }
.hero-stat-label { font-size: .85rem; color: var(--gris-l); line-height: 1.4; }

/* ── Zones géo ── */
.geo-bar {
  background: var(--pale);
  border-bottom: 1px solid rgba(185,212,244,.4);
  padding: 12px 0;
}
.geo-bar-inner {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .82rem;
  color: var(--bleu);
  flex-wrap: wrap;
}
.geo-bar-inner strong { color: var(--marine); }
.geo-sep { color: var(--clair); }

/* ── Sections ── */
.section { padding: 80px 0; }
.section-alt { background: var(--gris-ll); }
.section-dark { background: var(--nuit); color: var(--blanc); }

.section-tag {
  display: inline-block;
  font-size: .72rem;
  font-family: var(--mono);
  text-transform: uppercase;
  letter-spacing: .15em;
  color: var(--accent);
  margin-bottom: 12px;
}
.section-title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  letter-spacing: -.03em;
  line-height: 1.2;
  margin-bottom: 16px;
  color: var(--marine);
}
.section-dark .section-title { color: var(--blanc); }
.section-sub {
  font-size: 1rem;
  color: var(--texte-s);
  max-width: 560px;
  line-height: 1.7;
}
.section-dark .section-sub { color: var(--clair); }
.section-head { margin-bottom: 52px; }

/* ── Services grid ── */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}
.service-card {
  background: var(--blanc);
  border: 1px solid rgba(185,212,244,.35);
  border-radius: var(--radius-l);
  padding: 32px;
  transition: all .2s;
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 3px; height: 100%;
  background: var(--bleu);
  transform: scaleY(0);
  transition: transform .2s;
  transform-origin: bottom;
}
.service-card:hover { box-shadow: var(--shadow-h); transform: translateY(-3px); }
.service-card:hover::before { transform: scaleY(1); }

.service-icon {
  width: 48px; height: 48px;
  background: var(--pale);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  transition: background .25s, transform .25s;
}
.service-icon svg {
  width: 24px; height: 24px;
  stroke: var(--bleu);
  transition: transform .3s cubic-bezier(.34,1.56,.64,1), stroke .25s;
}
.service-card:hover .service-icon {
  background: var(--bleu);
  transform: scale(1.08);
}
.service-card:hover .service-icon svg {
  stroke: white;
  transform: rotate(-12deg) scale(1.15);
}
.service-card h3 { font-size: 1rem; font-weight: 700; color: var(--marine); margin-bottom: 10px; }
.service-card p  { font-size: .88rem; color: var(--texte-s); line-height: 1.6; }
.service-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 16px; }
.service-tag {
  font-size: .72rem;
  font-family: var(--mono);
  background: var(--pale);
  color: var(--bleu);
  padding: 3px 10px;
  border-radius: 100px;
}

/* ── Pourquoi moi ── */
.why-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}
.why-list { display: flex; flex-direction: column; gap: 20px; }
.why-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.why-num {
  font-family: var(--mono);
  font-size: .72rem;
  color: var(--accent);
  background: var(--pale);
  width: 32px; height: 32px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-weight: 500;
}
.why-content h4 { font-size: .95rem; font-weight: 700; color: var(--marine); margin-bottom: 4px; }
.why-content p  { font-size: .85rem; color: var(--texte-s); }

.why-visual {
  background: var(--nuit);
  border-radius: var(--radius-l);
  padding: 40px;
  position: relative;
  overflow: hidden;
}
.why-visual-onde {
  position: absolute;
  bottom: -20px;
  right: -20px;
  opacity: .12;
}
.why-xp {
  font-size: 5rem;
  font-weight: 700;
  color: var(--blanc);
  line-height: 1;
  letter-spacing: -.05em;
}
.why-xp span { color: var(--accent); font-size: 2.5rem; }
.why-xp-label { font-size: .85rem; color: var(--clair); margin-top: 8px; margin-bottom: 28px; }
.why-tech { display: flex; flex-wrap: wrap; gap: 8px; }
.why-tech-tag {
  font-size: .72rem;
  font-family: var(--mono);
  background: rgba(55,138,221,.15);
  color: var(--clair);
  border: 1px solid rgba(55,138,221,.2);
  padding: 5px 12px;
  border-radius: 6px;
}

/* ── Zones d'intervention ── */
.zones-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-top: 40px;
}
.zone-card {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
}
.zone-card strong { display: block; color: var(--blanc); font-size: .95rem; margin-bottom: 4px; }
.zone-card span   { font-size: .78rem; color: var(--gris-l); }

/* ── CTA band ── */
.cta-band {
  background: var(--bleu);
  padding: 60px 0;
}
.cta-band-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}
.cta-band h2 { font-size: 1.6rem; font-weight: 700; color: var(--blanc); letter-spacing: -.02em; }
.cta-band p  { color: rgba(255,255,255,.75); font-size: .9rem; margin-top: 6px; }
.cta-band-actions { display: flex; gap: 12px; flex-shrink: 0; }

/* ── Contact ── */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}
.contact-info { display: flex; flex-direction: column; gap: 20px; }
.contact-info-item { display: flex; align-items: flex-start; gap: 16px; }
.contact-icon {
  width: 44px; height: 44px;
  min-width: 44px;
  background: var(--pale);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.contact-icon svg {
  width: 20px; height: 20px;
  stroke: var(--bleu);
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}
.contact-item-icon {
  width: 44px; height: 44px;
  background: var(--pale);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.contact-item-icon svg { width: 20px; height: 20px; stroke: var(--bleu); }
.contact-item h4 { font-size: .85rem; font-weight: 700; color: var(--marine); margin-bottom: 2px; }
.contact-item p, .contact-item a { font-size: .88rem; color: var(--texte-s); }
.contact-item a:hover { color: var(--bleu); }

.contact-form {
  background: var(--blanc);
  border: 1px solid rgba(185,212,244,.4);
  border-radius: var(--radius-l);
  padding: 36px;
  box-shadow: var(--shadow);
}
.form-group { margin-bottom: 20px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
label { display: block; font-size: .82rem; font-weight: 500; color: var(--marine); margin-bottom: 6px; }
input, select, textarea {
  width: 100%;
  padding: 11px 14px;
  border: 1.5px solid rgba(185,212,244,.5);
  border-radius: var(--radius);
  font-family: var(--font);
  font-size: .9rem;
  color: var(--texte);
  background: var(--blanc);
  transition: border-color .15s;
  outline: none;
}
input:focus, select:focus, textarea:focus { border-color: var(--bleu); }
textarea { resize: vertical; min-height: 120px; }

/* ── Footer ── */
.footer {
  background: var(--nuit);
  color: var(--blanc);
  padding: 52px 0 28px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 40px;
}
.footer-brand-name { font-size: 1.1rem; font-weight: 700; margin-bottom: 4px; }
.footer-brand-sub  { font-size: .75rem; color: var(--gris); letter-spacing: .12em; text-transform: uppercase; }
.footer-desc { font-size: .85rem; color: var(--gris-l); line-height: 1.7; margin-top: 16px; max-width: 280px; }
.footer-col h4 { font-size: .78rem; font-weight: 700; color: var(--clair); text-transform: uppercase; letter-spacing: .12em; margin-bottom: 16px; font-family: var(--mono); }
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a { font-size: .85rem; color: var(--gris-l); transition: color .15s; }
.footer-links a:hover { color: var(--accent); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.07);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: .78rem;
  color: var(--gris);
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom a { color: var(--gris); }
.footer-bottom a:hover { color: var(--accent); }

/* ── Logo SVG inline ── */
.logo-svg { overflow: visible; }

/* ── Page intérieure hero ── */
.page-hero {
  background: var(--nuit);
  padding: 60px 0;
  color: var(--blanc);
}
.page-hero-tag { font-family: var(--mono); font-size: .72rem; color: var(--accent); text-transform: uppercase; letter-spacing: .15em; margin-bottom: 12px; }
.page-hero h1 { font-size: clamp(1.8rem,3.5vw,2.6rem); font-weight: 700; letter-spacing: -.03em; }
.page-hero p   { color: var(--clair); margin-top: 12px; font-size: 1rem; max-width: 560px; }

/* ── Offres cards ── */
.offres-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}
.offre-card {
  background: var(--blanc);
  border: 1px solid rgba(185,212,244,.35);
  border-radius: var(--radius-l);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: all .2s;
}
.offre-card:hover { box-shadow: var(--shadow-h); transform: translateY(-2px); }
.offre-card.featured {
  border-color: var(--bleu);
  background: var(--pale);
}
.offre-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.offre-icon {
  width: 52px; height: 52px;
  background: var(--pale);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.offre-card.featured .offre-icon { background: rgba(24,95,165,.15); }
.offre-icon svg { width: 26px; height: 26px; stroke: var(--bleu); fill: none; }
.offre-badge {
  font-size: .68rem;
  font-family: var(--mono);
  background: var(--bleu);
  color: var(--blanc);
  padding: 4px 10px;
  border-radius: 100px;
}
.offre-card h3 { font-size: 1.05rem; font-weight: 700; color: var(--marine); }
.offre-card p  { font-size: .88rem; color: var(--texte-s); line-height: 1.6; }
.offre-list { display: flex; flex-direction: column; gap: 8px; }
.offre-list li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: .85rem;
  color: var(--texte-s);
}
.offre-list li::before {
  content: '';
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--pale);
  border: 1.5px solid var(--accent);
  flex-shrink: 0;
  margin-top: 2px;
}

/* ── À propos ── */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.about-visual {
  background: var(--nuit);
  border-radius: var(--radius-l);
  padding: 48px;
  position: relative;
  overflow: hidden;
  text-align: center;
}
.about-initial {
  font-size: 6rem;
  font-weight: 700;
  color: var(--blanc);
  line-height: 1;
  letter-spacing: -.05em;
  position: relative;
  z-index: 1;
}
.about-initial span { color: var(--accent); }
.about-name { font-size: .9rem; color: var(--clair); margin-top: 8px; position: relative; z-index: 1; }
.about-title-badge {
  display: inline-block;
  margin-top: 12px;
  font-size: .72rem;
  font-family: var(--mono);
  background: rgba(55,138,221,.2);
  border: 1px solid rgba(55,138,221,.3);
  color: var(--clair);
  padding: 5px 14px;
  border-radius: 100px;
  position: relative;
  z-index: 1;
}
.about-onde-bg {
  position: absolute;
  bottom: -30px; left: -30px;
  opacity: .08;
}
.about-content h2 { font-size: 1.8rem; font-weight: 700; color: var(--marine); letter-spacing: -.03em; margin-bottom: 16px; }
.about-content p  { font-size: .9rem; color: var(--texte-s); line-height: 1.8; margin-bottom: 16px; }
.about-engagements { display: flex; flex-direction: column; gap: 14px; margin-top: 24px; }
.about-eng {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}
.about-eng-dot {
  width: 8px; height: 8px;
  background: var(--accent);
  border-radius: 50%;
  margin-top: 6px;
  flex-shrink: 0;
}
.about-eng h4 { font-size: .9rem; font-weight: 700; color: var(--marine); }
.about-eng p  { font-size: .85rem; color: var(--texte-s); }

/* ── Responsive ── */
@media (max-width: 900px) {
  .hero-inner, .why-grid, .contact-grid, .about-grid { grid-template-columns: 1fr; }
  .hero-card { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .nav-links, .nav-cta { display: none; }
  .nav-burger { display: flex; }
  .form-row { grid-template-columns: 1fr; }
  .cta-band-inner { flex-direction: column; text-align: center; }
  .cta-band-actions { justify-content: center; }
}
@media (max-width: 600px) {
  .footer-grid { grid-template-columns: 1fr; }
  .zones-grid { grid-template-columns: 1fr 1fr; }
  .hero { padding: 60px 0; }
  .section { padding: 56px 0; }
}

/* ── Animation entrée ── */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .5s ease, transform .5s ease;
}
.fade-in.visible { opacity: 1; transform: none; }

/* ── Animations fade-up ── */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .6s ease, transform .6s ease;
}
.fade-up.visible {
  opacity: 1;
  transform: none;
}
.fade-up-1 { transition-delay: .1s; }
.fade-up-2 { transition-delay: .2s; }
.fade-up-3 { transition-delay: .3s; }
.fade-up-4 { transition-delay: .4s; }