/* ITELEC — Vitrine / Structure 2026 */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=Rajdhani:wght@500;600;700&display=swap');

:root {
  --navy: #02122b;
  --navy-deep: #010d1f;
  --navy-card: #0a1e3d;
  --navy-alt: #061528;
  --yellow: #f5b800;
  --blue: #00aeef;
  --white: #ffffff;
  --text: #e8eef7;
  --text-muted: #8fa3be;
  --border: rgba(255, 255, 255, 0.1);
  --gradient-energy: linear-gradient(90deg, var(--yellow) 0%, var(--blue) 100%);
  --font-display: 'Rajdhani', sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --header-h: 72px;
  --radius: 14px;
  --max: 1280px;
  --shadow: 0 16px 48px rgba(0, 0, 0, 0.4);
}

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

html { scroll-behavior: smooth; }

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

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

ul { list-style: none; }

/* ─── Header (inchangé fonctionnellement) ─── */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-h);
  display: flex;
  align-items: center;
  padding: 0 1.5rem;
  background: rgba(1, 13, 31, 0.55);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: background 0.3s, box-shadow 0.3s;
}

.site-header.scrolled {
  background: rgba(1, 13, 31, 0.96);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.35);
}

.site-header nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex-shrink: 0;
}

.brand-emblem { height: 44px; width: auto; }

.brand-name {
  font-family: var(--font-display);
  font-size: 1.65rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--white);
}

#desktopNav ul {
  display: flex;
  gap: 1.75rem;
  align-items: center;
}

#desktopNav a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color 0.25s;
  position: relative;
}

#desktopNav a:hover { color: var(--white); }

#desktopNav a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0;
  height: 2px;
  background: var(--gradient-energy);
  transition: width 0.3s;
}

#desktopNav a:hover::after { width: 100%; }

.btn-cta {
  background: var(--yellow);
  color: var(--navy-deep);
  border: none;
  padding: 0.55rem 1.35rem;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.85rem;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
  white-space: nowrap;
}

.btn-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(245, 184, 0, 0.45);
}

.burger {
  display: none;
  background: none;
  border: none;
  color: var(--white);
  font-size: 1.6rem;
  cursor: pointer;
}

#mainNav {
  position: fixed;
  top: 0;
  right: -320px;
  width: 300px;
  height: 100vh;
  background: var(--navy);
  border-left: 1px solid var(--border);
  padding: 5.5rem 1.75rem 2rem;
  transition: right 0.35s ease;
  z-index: 999;
}

#mainNav.show { right: 0; }
#mainNav li { margin-bottom: 1.5rem; }
#mainNav a { font-size: 1.15rem; font-weight: 500; color: var(--text); }

#navOverlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  opacity: 0;
  visibility: hidden;
  transition: 0.3s;
  z-index: 998;
}

#navOverlay.show { opacity: 1; visibility: visible; }

/* ─── Main ─── */
.site-main {
  padding-top: var(--header-h);
}

/* Hero split : bannière nette (jamais agrandie) + fond riche */
.hero-split {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(300px, 0.9fr);
  align-items: stretch;
  border-bottom: 1px solid var(--border);
}

.hero-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.75rem 1.25rem;
  overflow: hidden;
  /* Prolonge visuellement la bannière (terrassement chaud | électricité froid) */
  background:
    radial-gradient(ellipse 90% 80% at 8% 70%, rgba(220, 120, 30, 0.22) 0%, transparent 55%),
    radial-gradient(ellipse 70% 70% at 92% 35%, rgba(0, 174, 239, 0.18) 0%, transparent 50%),
    linear-gradient(160deg, #0c1a30 0%, var(--navy-deep) 45%, #061222 100%);
}

/* Fondu doux vers la colonne texte uniquement */
.hero-visual::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 28%;
  height: 100%;
  pointer-events: none;
  background: linear-gradient(90deg, transparent 0%, rgba(1, 13, 31, 0.65) 100%);
}

.hero-banner {
  position: relative;
  z-index: 1;
  display: block;
  width: min(100%, 1024px);
  height: auto;
  object-fit: contain;
  object-position: center;
  border-radius: var(--radius);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.45);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.hero-aside {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 2.5rem 2.5rem 2.5rem 2rem;
  background: linear-gradient(135deg, var(--navy-card) 0%, var(--navy-deep) 100%);
  border-left: 1px solid var(--border);
  position: relative;
}

.hero-aside::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: var(--gradient-energy);
}

.hero-kicker {
  font-family: var(--font-display);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.dot-yellow { color: var(--yellow); }
.dot-blue { color: var(--blue); }

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 3.2vw, 2.5rem);
  font-weight: 700;
  line-height: 1.15;
  color: var(--white);
  letter-spacing: 0.02em;
  margin-bottom: 1rem;
}

.hero-title-accent {
  display: block;
  background: var(--gradient-energy);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-lead {
  font-size: clamp(0.98rem, 1.8vw, 1.1rem);
  line-height: 1.75;
  margin-bottom: 1.25rem;
  color: var(--text-muted);
}

.hero-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.75rem;
}

.hero-pills li {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.4rem 0.85rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
}

.hero-cta {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 2.5rem;
}

.btn-primary {
  background: var(--gradient-energy);
  color: var(--navy-deep);
  border: none;
  padding: 0.9rem 1.5rem;
  border-radius: var(--radius);
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
  text-align: center;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 174, 239, 0.3);
}

.btn-secondary {
  background: transparent;
  color: var(--white);
  border: 1.5px solid var(--border);
  padding: 0.9rem 1.5rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
}

.btn-secondary:hover {
  border-color: var(--blue);
  background: rgba(0, 174, 239, 0.06);
}

.hero-quick-contact {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.hero-quick-contact a {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.88rem;
  font-weight: 600;
  transition: opacity 0.2s;
}

.hero-quick-contact a:hover { opacity: 0.8; }

.contact-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  flex-shrink: 0;
}

.contact-icon.email { background: var(--yellow); color: var(--navy-deep); }
.contact-icon.phone { background: var(--blue); color: var(--white); }

.contact-icon svg { display: block; }

/* ─── Sections sous le hero ─── */
.section-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section-block {
  padding: 5rem 0;
  scroll-margin-top: calc(var(--header-h) + 16px);
  position: relative;
}

.section-block--stats {
  background: var(--navy-deep);
  border-top: 1px solid var(--border);
}

.section-block--services {
  background:
    radial-gradient(ellipse 70% 50% at 0% 0%, rgba(245, 184, 0, 0.06) 0%, transparent 50%),
    var(--navy-deep);
}

.section-block--portfolio {
  background: var(--navy-deep);
  border: none;
  padding-top: 5.5rem;
  padding-bottom: 5.5rem;
}

.section-block--portfolio .section-head {
  margin-bottom: 2.75rem;
}

.section-block--portfolio .section-subtitle {
  font-size: 1rem;
  font-weight: 400;
  letter-spacing: 0.01em;
}

.section-block--portfolio::before {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 90% 55% at 50% -10%, rgba(0, 174, 239, 0.07) 0%, transparent 55%),
    radial-gradient(ellipse 60% 40% at 100% 100%, rgba(245, 184, 0, 0.04) 0%, transparent 50%);
}

.section-block--closing {
  padding-bottom: 0;
  background: linear-gradient(180deg, var(--navy-deep) 0%, #000810 100%);
}

.section-head {
  margin-bottom: 3rem;
}

.section-head--center {
  text-align: center;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}

.section-head--split {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}

.section-head-text { max-width: 560px; }

.section-label {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 0.6rem;
}

.section-head h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.03em;
  line-height: 1.1;
  margin-bottom: 0.65rem;
}

.section-subtitle {
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.65;
}

.section-head-link {
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--yellow);
  white-space: nowrap;
  transition: color 0.2s;
}

.section-head-link:hover { color: var(--blue); }

/* Stats */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}

.stat-card {
  position: relative;
  padding: 1.75rem 1.25rem;
  text-align: left;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.25s, transform 0.25s, box-shadow 0.25s;
}

.stat-card:hover {
  border-color: rgba(0, 174, 239, 0.35);
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.25);
}

.stat-card-line {
  display: block;
  width: 32px;
  height: 3px;
  background: var(--gradient-energy);
  border-radius: 2px;
  margin-bottom: 1.25rem;
}

.stat-number {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--white);
  line-height: 1;
  margin-bottom: 0.45rem;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* Services — cartes */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.service-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 2rem 1.75rem;
  background: rgba(10, 30, 61, 0.65);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 2px);
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
}

.service-card--warm::before { background: var(--yellow); }
.service-card--dual::before { background: var(--gradient-energy); }
.service-card--cool::before { background: var(--blue); }

.service-card:hover {
  transform: translateY(-6px);
  border-color: rgba(255, 255, 255, 0.18);
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.35);
}

.service-card-index {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.06);
  line-height: 1;
}

.service-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
}

.service-icon svg { width: 26px; height: 26px; }

.service-icon--warm { color: var(--yellow); border-color: rgba(245, 184, 0, 0.35); }
.service-icon--dual { color: var(--yellow); border-color: rgba(0, 174, 239, 0.3); }
.service-icon--cool { color: var(--blue); border-color: rgba(0, 174, 239, 0.35); }

.service-card h3 {
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.04em;
  margin-bottom: 0.75rem;
}

.service-card p {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.7;
  flex: 1;
}

/* Portfolio */
.section-block--portfolio .section-inner {
  position: relative;
  z-index: 1;
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: 162px;
  gap: 0.65rem;
  max-width: 1024px;
  margin: 0 auto;
}

.portfolio-item {
  position: relative;
  margin: 0;
  min-height: 0;
  height: 100%;
  border-radius: 10px;
  overflow: hidden;
  cursor: pointer;
  border: none;
  background: rgba(255, 255, 255, 0.02);
  isolation: isolate;
  transition: box-shadow 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

.portfolio-item--lead {
  grid-column: span 2;
  grid-row: span 2;
}

.portfolio-item::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(
    180deg,
    transparent 35%,
    rgba(1, 13, 31, 0.35) 70%,
    rgba(1, 13, 31, 0.72) 100%
  );
  opacity: 0.55;
  transition: opacity 0.45s ease;
  pointer-events: none;
}

.portfolio-item::after {
  content: '';
  position: absolute;
  top: 0.9rem;
  right: 0.9rem;
  z-index: 2;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' fill='none' stroke='white' stroke-width='1.5' viewBox='0 0 24 24'%3E%3Cpath d='M15 3h6v6M9 21H3v-6M21 3l-7 7M3 21l7-7'/%3E%3C/svg%3E") center / 13px no-repeat;
  backdrop-filter: blur(8px);
  opacity: 0;
  transform: scale(0.92);
  transition: opacity 0.35s ease, transform 0.35s ease;
  pointer-events: none;
}

.portfolio-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: saturate(0.92) contrast(1.02);
  transition: transform 0.7s cubic-bezier(0.22, 1, 0.36, 1), filter 0.5s ease;
}

.portfolio-item figcaption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2;
  padding: 1.1rem 1rem 1rem;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.2rem;
  transform: translateY(4px);
  opacity: 0;
  transition: opacity 0.4s ease, transform 0.4s ease;
  pointer-events: none;
}

.portfolio-cat {
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.55);
}

.portfolio-title {
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--white);
  line-height: 1.3;
}

.portfolio-item--lead .portfolio-title {
  font-size: 1rem;
  font-weight: 500;
}

.portfolio-item:hover {
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.28);
}

.portfolio-item:hover::before { opacity: 0.85; }

.portfolio-item:hover::after {
  opacity: 1;
  transform: scale(1);
}

.portfolio-item:hover img {
  transform: scale(1.025);
  filter: saturate(1) contrast(1.04);
}

.portfolio-item:hover figcaption {
  opacity: 1;
  transform: translateY(0);
}

@media (hover: none) {
  .portfolio-item::before { opacity: 0.7; }
  .portfolio-item figcaption {
    opacity: 1;
    transform: none;
  }
  .portfolio-item::after { display: none; }
}

/* Contact / closing */
.closing-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
  padding-bottom: 3rem;
}

#contact { scroll-margin-top: calc(var(--header-h) + 16px); }

.closing-intro h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.65rem);
  font-weight: 700;
  color: var(--white);
  margin-bottom: 0.75rem;
  line-height: 1.1;
}

.closing-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

.closing-actions .btn-primary,
.closing-actions .btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  padding: 0.85rem 1.5rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.92rem;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
}

.closing-actions .btn-primary {
  background: var(--gradient-energy);
  color: var(--navy-deep);
  border: none;
}

.closing-actions .btn-secondary {
  background: transparent;
  color: var(--white);
  border: 1.5px solid var(--border);
}

.closing-actions .btn-primary:hover,
.closing-actions .btn-secondary:hover {
  transform: translateY(-2px);
}

.closing-details {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.detail-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.15rem 1.25rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.2s, background 0.2s;
}

.detail-card:hover {
  border-color: rgba(0, 174, 239, 0.4);
  background: rgba(0, 174, 239, 0.06);
}

.detail-icon {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  background: rgba(255, 255, 255, 0.06);
  color: var(--white);
}

.detail-icon svg { width: 20px; height: 20px; }

.detail-icon--mail { background: var(--yellow); color: var(--navy-deep); }
.detail-icon--phone { background: var(--blue); color: var(--white); }

.detail-text strong {
  display: block;
  font-family: var(--font-display);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--white);
  margin-bottom: 0.2rem;
}

.detail-text span {
  font-size: 0.92rem;
  color: var(--text-muted);
}

.social-strip {
  border-top: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.25);
  padding: 1.5rem 0;
}

#nous-suivre { scroll-margin-top: calc(var(--header-h) + 16px); }

.social-strip-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.social-strip-title {
  font-family: var(--font-display);
  font-size: 1rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.social-strip-links {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.social-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.15rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text);
  transition: border-color 0.2s, background 0.2s;
}

.social-chip:hover {
  border-color: var(--blue);
  background: rgba(0, 174, 239, 0.1);
  color: var(--white);
}

.social-chip svg { flex-shrink: 0; opacity: 0.9; }

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  background: #000810;
  padding: 3rem 0 2rem;
}

.site-footer-inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 2.5rem 2rem;
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--white);
  margin-bottom: 0.75rem;
}

.footer-about {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
  max-width: 280px;
}

.footer-heading {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--white);
  margin-bottom: 1rem;
}

.footer-nav {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.footer-nav a {
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: color 0.2s;
}

.footer-nav a:hover { color: var(--white); }

.footer-bottom {
  grid-column: 1 / -1;
  padding-top: 2rem;
  margin-top: 0.5rem;
  border-top: 1px solid var(--border);
  font-size: 0.8rem;
  color: var(--text-muted);
  text-align: center;
}

/* Lightbox */
#lightbox-overlay {
  position: fixed;
  inset: 0;
  background: rgba(1, 13, 31, 0.82);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.35s ease, visibility 0.35s;
}

#lightbox-overlay:not(.hidden) { opacity: 1; visibility: visible; }

#lightbox-img {
  max-width: min(92%, 1100px);
  max-height: 88vh;
  border-radius: 12px;
  box-shadow: 0 32px 80px rgba(0, 0, 0, 0.45);
  transition: opacity 0.25s ease;
}

#lightbox-close,
.lightbox-nav {
  position: absolute;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
  color: rgba(255, 255, 255, 0.9);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.1rem;
  font-weight: 300;
  backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.25s, border-color 0.25s, color 0.25s;
}

#lightbox-close { top: 1.5rem; right: 1.5rem; }
#lightbox-prev { left: 1.25rem; top: 50%; transform: translateY(-50%); }
#lightbox-next { right: 1.25rem; top: 50%; transform: translateY(-50%); }

#lightbox-close:hover,
.lightbox-nav:hover {
  background: rgba(255, 255, 255, 0.14);
  border-color: rgba(255, 255, 255, 0.28);
  color: var(--white);
}

#topBtn {
  position: fixed;
  bottom: 1.75rem;
  right: 1.75rem;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: none;
  background: var(--yellow);
  color: var(--navy-deep);
  font-size: 1.2rem;
  font-weight: 700;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: 0.3s;
  z-index: 900;
}

#topBtn.show { opacity: 1; visibility: visible; }
#topBtn:hover { transform: translateY(-3px); }

/* Animations */
.fade-in {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s, transform 0.7s;
}

.fade-in.visible { opacity: 1; transform: translateY(0); }

.service-card, .portfolio-item, .stat-card, .closing-intro, .detail-card {
  opacity: 0;
  transform: translateY(20px);
}

.animate-in { animation: fadeUp 0.65s ease forwards; }

@keyframes fadeUp {
  to { opacity: 1; transform: translateY(0); }
}

/* Accessibilité & finitions */
:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
}

.btn-primary:focus-visible,
.btn-secondary:focus-visible,
.btn-cta:focus-visible {
  outline-color: var(--yellow);
}

::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--navy-deep); }
::-webkit-scrollbar-thumb {
  background: linear-gradient(var(--yellow), var(--blue));
  border-radius: 5px;
}

/* ─── Responsive ─── */
@media (max-width: 1100px) {
  .hero-split {
    grid-template-columns: 1fr;
    min-height: auto;
    max-height: none;
  }

  .hero-visual {
    padding: 1.25rem 1rem 0;
  }

  .hero-visual::after {
    width: 100%;
    height: 35%;
    top: auto;
    bottom: 0;
    right: 0;
    background: linear-gradient(0deg, rgba(1, 13, 31, 0.85) 0%, transparent 100%);
  }

  .hero-banner {
    width: 100%;
    margin: 0 auto;
    border-radius: var(--radius);
  }

  .hero-aside {
    border-left: none;
    border-top: 1px solid var(--border);
    padding: 2rem 1.5rem;
  }

  .hero-aside::before {
    width: 100%;
    height: 3px;
    top: 0;
    left: 0;
  }

  .hero-cta {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .closing-layout { grid-template-columns: 1fr; }
  .services-grid { grid-template-columns: 1fr; }
}

@media (max-width: 1024px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .services-grid { grid-template-columns: 1fr; }
  .portfolio-grid {
    grid-template-columns: repeat(2, 1fr);
    grid-auto-rows: 148px;
    max-width: none;
  }
  .portfolio-item--lead {
    grid-column: span 2;
    grid-row: span 1;
  }
}

@media (max-width: 768px) {
  .burger { display: block; }
  #desktopNav, .site-header .btn-cta { display: none; }

  .section-block { padding: 3.5rem 0; }
  .section-head--split { flex-direction: column; align-items: flex-start; }
  .stats-grid { grid-template-columns: 1fr; }
  .portfolio-grid {
    grid-template-columns: repeat(2, 1fr);
    grid-auto-rows: 135px;
  }
  .portfolio-item--lead {
    grid-column: span 2;
    grid-row: span 1;
  }
  .site-footer-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .footer-brand { justify-content: center; }
  .footer-about { margin: 0 auto; }
  .footer-nav { align-items: center; }
  .social-strip-inner { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
  .closing-actions { flex-direction: column; }
  .closing-actions .btn-primary,
  .closing-actions .btn-secondary { width: 100%; }
}