/* ==========================================================================
   Electron Energy Group — Feuille de styles du site institutionnel
   Typographie : Space Grotesk (titres) + Inter (texte) — auto-hébergées
   Palette : bleu de marque #008af9, encre #0a1420, neutres élégants
   ========================================================================== */

/* ----------------------------- Polices ----------------------------- */
@font-face {
  font-family: 'Space Grotesk';
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url('../fonts/space-grotesk-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA,
    U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+2074, U+20AC, U+2122, U+2191,
    U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Space Grotesk';
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url('../fonts/space-grotesk-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF,
    U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020,
    U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url('../fonts/inter-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA,
    U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+2074, U+20AC, U+2122, U+2191,
    U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url('../fonts/inter-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF,
    U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020,
    U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

/* ----------------------------- Fondations ----------------------------- */
:root {
  --bleu: #008af9;
  --bleu-700: #006bc7;
  --bleu-800: #0059a8;
  --nuit: #0a1420;
  --encre: #121c28;
  --ardoise: #4f5d70;
  --brume: #f4f6f9;
  --ligne: #e2e7ee;
  --ligne-forte: #cbd5e1;
  --azur: #e9f3fe;
  --blanc: #ffffff;
  --font-display: 'Space Grotesk', 'Inter', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --gouttiere: clamp(1.25rem, 4vw, 2.5rem);
  --radius: 6px;
  --section-y: clamp(4.25rem, 9vw, 7.5rem);
  --tete-h: 78px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

section[id],
article[id],
div[id] {
  scroll-margin-top: calc(var(--tete-h) + 1rem);
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--encre);
  background: var(--blanc);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--nuit);
  text-wrap: balance;
}

p {
  margin: 0;
  text-wrap: pretty;
}

ul,
ol {
  margin: 0;
  padding: 0;
}

img {
  max-width: 100%;
  height: auto;
}

a {
  color: var(--bleu-700);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--bleu-800);
}

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

::selection {
  background: var(--bleu);
  color: #fff;
}

/* ----------------------------- Utilitaires ----------------------------- */
.container {
  width: min(100% - 2 * var(--gouttiere), 1200px);
  margin-inline: auto;
}

.section {
  padding-block: var(--section-y);
}

.section--serree {
  padding-block: clamp(3rem, 6vw, 4.5rem);
}

.section--alt {
  background: var(--brume);
}

.section--nuit {
  background: var(--nuit);
  color: #e7edf5;
}

.section--nuit h2,
.section--nuit h3 {
  color: #fff;
}

.section--nuit .lead,
.section--nuit .point-list li,
.section--nuit .section-note,
.section--nuit .figure figcaption {
  color: #b9c6d6;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 200;
  padding: 0.7rem 1.1rem;
  background: var(--nuit);
  color: #fff;
  border-radius: 4px;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  transform: translateY(-160%);
  transition: transform 0.2s ease;
}

.skip-link:focus-visible {
  transform: none;
  color: #fff;
}

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-family: var(--font-body);
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--bleu-700);
}

.kicker::before {
  content: '';
  width: 26px;
  height: 2px;
  background: var(--bleu);
  border-radius: 2px;
}

.lead {
  font-size: clamp(1.04rem, 1.5vw, 1.18rem);
  line-height: 1.75;
  color: var(--ardoise);
  max-width: 62ch;
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: clamp(2.2rem, 4vw, 3.2rem);
}

.section-head .section-head-copy {
  max-width: 720px;
}

.section-head h2 {
  font-size: clamp(1.75rem, 3.4vw, 2.6rem);
  margin-top: 0.9rem;
}

.section-head .lead {
  margin-top: 1rem;
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--bleu-700);
  text-decoration: none;
  white-space: nowrap;
}

.link-arrow::after {
  content: '→';
  transition: transform 0.2s ease;
}

.link-arrow:hover::after {
  transform: translateX(4px);
}

/* Animation d'apparition */
html.js .reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

html.js .reveal.is-visible {
  opacity: 1;
  transform: none;
}

html.js .reveal[data-delai='1'] {
  transition-delay: 0.08s;
}

html.js .reveal[data-delai='2'] {
  transition-delay: 0.16s;
}

html.js .reveal[data-delai='3'] {
  transition-delay: 0.24s;
}

/* ----------------------------- Boutons ----------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.88rem 1.55rem;
  border: 1px solid transparent;
  border-radius: 999px;
  font-family: var(--font-body);
  font-size: 0.92rem;
  font-weight: 600;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease,
    transform 0.2s ease, box-shadow 0.2s ease;
}

.btn--primary {
  background: var(--bleu-700);
  color: #fff;
  box-shadow: 0 10px 24px -14px rgba(0, 107, 199, 0.75);
}

.btn--primary:hover {
  background: var(--bleu-800);
  color: #fff;
  transform: translateY(-1px);
}

.btn--ghost {
  background: transparent;
  border-color: var(--ligne-forte);
  color: var(--nuit);
}

.btn--ghost:hover {
  border-color: var(--bleu);
  color: var(--bleu-700);
}

.btn--light {
  background: #fff;
  color: var(--nuit);
}

.btn--light:hover {
  background: var(--azur);
  color: var(--nuit);
}

.btn--sm {
  padding: 0.65rem 1.15rem;
  font-size: 0.86rem;
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1.9rem;
}

/* ----------------------------- En-tête ----------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: box-shadow 0.25s ease, border-color 0.25s ease,
    background 0.25s ease;
}

.site-header.is-scrolled {
  border-bottom-color: var(--ligne);
  box-shadow: 0 12px 34px -26px rgba(10, 20, 32, 0.5);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  height: var(--tete-h);
}

.brand {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}

.brand img {
  display: block;
  height: 34px;
  width: auto;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2.4vw, 2.2rem);
}

.main-nav ul {
  display: flex;
  align-items: center;
  gap: clamp(0.9rem, 1.9vw, 1.7rem);
  list-style: none;
}

.nav-link {
  position: relative;
  display: inline-block;
  padding: 0.4rem 0;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--encre);
  text-decoration: none;
  white-space: nowrap;
}

.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--bleu);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}

.nav-link:hover::after,
.nav-link[aria-current='page']::after {
  transform: scaleX(1);
}

.nav-link[aria-current='page'] {
  font-weight: 600;
  color: var(--nuit);
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 0;
  border-radius: 999px;
  background: transparent;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  border-radius: 2px;
  background: var(--nuit);
  transition: transform 0.3s ease, opacity 0.2s ease, background 0.2s ease;
}

/* État menu ouvert (mobile) */
body.nav-open {
  overflow: hidden;
}

body.nav-open .site-header {
  background: var(--nuit);
  border-bottom-color: transparent;
  box-shadow: none;
}

body.nav-open .brand img {
  filter: brightness(0) invert(1);
}

body.nav-open .nav-toggle span {
  background: #fff;
}

body.nav-open .nav-toggle span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

body.nav-open .nav-toggle span:nth-child(2) {
  opacity: 0;
}

body.nav-open .nav-toggle span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ----------------------------- Héros ----------------------------- */
.hero-home {
  padding-block: clamp(3.5rem, 7vw, 6rem);
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.04fr 0.96fr;
  align-items: center;
  gap: clamp(2.5rem, 6vw, 5.5rem);
}

.hero-copy .kicker {
  margin-bottom: 1.15rem;
}

.hero-copy h1 {
  font-size: clamp(2.5rem, 5.4vw, 4.4rem);
  letter-spacing: -0.03em;
}

.hero-copy h1 em {
  font-style: normal;
  color: var(--bleu);
}

.hero-copy .lead {
  margin-top: 1.5rem;
  max-width: 46ch;
}

.hero-frame {
  position: relative;
}

.hero-frame::before {
  content: '';
  position: absolute;
  inset: 16px -16px -16px 16px;
  border: 1px solid var(--ligne-forte);
  border-radius: var(--radius);
}

.hero-media {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--brume);
}

.hero-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-media::after {
  content: '';
  position: absolute;
  inset: auto 0 0 0;
  height: 34%;
  background: linear-gradient(to top, rgba(10, 20, 32, 0.32), transparent);
  pointer-events: none;
}

.page-hero {
  padding-block: clamp(3.4rem, 7vw, 5.6rem) clamp(2.6rem, 5vw, 4rem);
  border-bottom: 1px solid var(--ligne);
}

.page-hero .kicker {
  margin-bottom: 1rem;
}

.page-hero h1 {
  font-size: clamp(2.3rem, 5vw, 3.9rem);
  letter-spacing: -0.028em;
  max-width: 22ch;
}

.page-hero .lead {
  margin-top: 1.3rem;
}

/* ----------------------------- Chiffres clés ----------------------------- */
.stats {
  border-block: 1px solid var(--ligne);
  background: var(--blanc);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.stat {
  padding: clamp(1.6rem, 3vw, 2.5rem) clamp(1rem, 2.2vw, 2rem);
  border-left: 1px solid var(--ligne);
}

.stat:first-child {
  border-left: 0;
  padding-left: 0;
}

.stat-value {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3vw, 2.45rem);
  font-weight: 600;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--nuit);
}

.stat-label {
  margin-top: 0.5rem;
  font-size: 0.86rem;
  line-height: 1.5;
  color: var(--ardoise);
}

/* ----------------------------- Cartes & grilles ----------------------------- */
.card {
  background: #fff;
  border: 1px solid var(--ligne);
  border-radius: var(--radius);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--ligne-forte);
  box-shadow: 0 26px 54px -34px rgba(10, 20, 32, 0.45);
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.expertise-card {
  position: relative;
  overflow: hidden;
  padding: clamp(1.5rem, 3vw, 2.1rem);
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.expertise-card::before {
  content: '';
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: var(--bleu);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s ease;
}

.expertise-card:hover::before {
  transform: scaleX(1);
}

.expertise-index {
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--bleu-700);
}

.expertise-card h3 {
  font-size: clamp(1.12rem, 1.7vw, 1.32rem);
}

.expertise-card p {
  font-size: 0.95rem;
  color: var(--ardoise);
}

.expertise-card ul {
  list-style: none;
  display: grid;
  gap: 0.35rem;
  margin-top: 0.2rem;
}

.expertise-card li {
  position: relative;
  padding-left: 1.1rem;
  font-size: 0.9rem;
  color: var(--ardoise);
}

.expertise-card li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--bleu);
}

/* Réalisations */
.realisation-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  padding: 0;
}

.realisation-card .media {
  aspect-ratio: 3 / 2;
  overflow: hidden;
  background: var(--brume);
}

.realisation-card .media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.realisation-card:hover .media img {
  transform: scale(1.04);
}

.realisation-body {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.55rem;
  padding: 1.35rem 1.5rem 1.6rem;
  flex: 1;
}

.realisation-body h3 {
  font-size: 1.08rem;
  line-height: 1.25;
}

.realisation-body p {
  font-size: 0.92rem;
  color: var(--ardoise);
}

.chip {
  display: inline-flex;
  align-items: center;
  padding: 0.28rem 0.72rem;
  border-radius: 999px;
  background: var(--azur);
  color: var(--bleu-700);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  white-space: nowrap;
}

.media-pair {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2px;
  aspect-ratio: 3 / 2;
  overflow: hidden;
  background: var(--brume);
}

.media-pair picture {
  display: block;
  min-width: 0;
}

.media-pair img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.realisation-card:hover .media-pair img {
  transform: scale(1.03);
}

.realisation-card--large {
  grid-column: span 2;
}

.realisations-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.media-pair--portrait {
  aspect-ratio: 3 / 2;
}
/* Note : .media-pair et .media utilisent le même ratio 3/2 — toutes les
   boîtes d'images des cartes ont la même hauteur dans les grilles. */

/* Réalisation mise en avant (sombre) */
.feature-realisation {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  overflow: hidden;
  border-radius: 8px;
  background: var(--nuit);
  color: #e7edf5;
}

.feature-media {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2px;
  width: 100%;
  min-width: 0;
  min-height: 420px;
}

.feature-media picture {
  display: block;
  min-width: 0;
}

.feature-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.feature-body {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  gap: 1rem;
  min-width: 0;
  padding: clamp(2rem, 4vw, 3.4rem);
}

.feature-body h2 {
  color: #fff;
  font-size: clamp(1.6rem, 2.8vw, 2.35rem);
}

.feature-body p {
  color: #b9c6d6;
  font-size: 0.98rem;
}

.feature-body .kicker {
  color: #7cc4ff;
}

/* Valeurs */
.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 1rem;
}

.value-card {
  padding: 1.6rem 1.4rem;
  border-top: 2px solid var(--bleu);
  background: #fff;
  border-radius: 0 0 var(--radius) var(--radius);
  box-shadow: 0 18px 40px -34px rgba(10, 20, 32, 0.4);
}

.value-card h3 {
  font-size: 1.02rem;
  line-height: 1.3;
}

.value-card p {
  margin-top: 0.5rem;
  font-size: 0.88rem;
  color: var(--ardoise);
}

/* ----------------------------- Sections en duo ----------------------------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: clamp(2rem, 5vw, 4.5rem);
}

.split--media-first .split-media {
  order: -1;
}

.split-copy h2 {
  font-size: clamp(1.7rem, 3.2vw, 2.5rem);
  margin-top: 0.9rem;
}

.split-copy .lead {
  margin-top: 1.1rem;
}

.split-media {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--brume);
}

.split-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.split-media--portrait {
  aspect-ratio: 4 / 5;
}

/* Liste de points */
.point-list {
  list-style: none;
  display: grid;
  gap: 0.55rem;
  margin-top: 1.2rem;
}

.point-list li {
  position: relative;
  padding-left: 1.35rem;
  font-size: 0.96rem;
  color: var(--encre);
}

.point-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--bleu);
}

/* ----------------------------- Chronologie IRVE ----------------------------- */
.timeline {
  list-style: none;
  max-width: 800px;
}

.timeline li {
  position: relative;
  padding: 0 0 2.3rem 4.1rem;
}

.timeline li::before {
  content: attr(data-step);
  position: absolute;
  left: 0;
  top: -0.1rem;
  display: grid;
  place-items: center;
  width: 2.55rem;
  height: 2.55rem;
  border: 1px solid var(--bleu);
  border-radius: 50%;
  background: #fff;
  color: var(--bleu-700);
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 600;
}

.timeline li::after {
  content: '';
  position: absolute;
  left: 1.27rem;
  top: 2.7rem;
  bottom: 0.1rem;
  width: 1px;
  background: var(--ligne);
}

.timeline li:last-child {
  padding-bottom: 0;
}

.timeline li:last-child::after {
  display: none;
}

.timeline h3 {
  font-size: 1.12rem;
  margin-bottom: 0.4rem;
}

.timeline p {
  font-size: 0.95rem;
  color: var(--ardoise);
}

/* ----------------------------- Récit (À propos) ----------------------------- */
.story-list {
  list-style: none;
  display: grid;
  gap: 1.7rem;
}

.story-item {
  display: grid;
  grid-template-columns: 2.5rem 1fr;
  gap: 1rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--ligne);
}

.story-item:first-child {
  padding-top: 0;
  border-top: 0;
}

.story-num {
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--bleu-700);
  padding-top: 0.25rem;
}

.story-item h3 {
  font-size: 1.08rem;
  margin-bottom: 0.3rem;
}

.story-item p {
  font-size: 0.95rem;
  color: var(--ardoise);
}

.section--nuit .kicker,
.quote-band .kicker,
.cta-band .kicker {
  color: #7cc4ff;
}

/* ----------------------------- Services ----------------------------- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.4rem 2.6rem;
}

.service {
  padding-top: 1.05rem;
  border-top: 1px solid var(--ligne);
}

.service h3 {
  font-size: 1rem;
  margin-bottom: 0.35rem;
}

.service p {
  font-size: 0.9rem;
  color: var(--ardoise);
}

/* ----------------------------- Sommaire d'expertises ----------------------------- */
.expertise-nav {
  border-bottom: 1px solid var(--ligne);
  background: #fff;
}

.expertise-nav ul {
  display: flex;
  flex-wrap: wrap;
  list-style: none;
}

.expertise-nav li {
  flex: 1 1 220px;
  border-left: 1px solid var(--ligne);
}

.expertise-nav li:first-child {
  border-left: 0;
}

.expertise-nav a {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  padding: 1.15rem 1.35rem;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--encre);
  text-decoration: none;
  transition: color 0.2s ease, background 0.2s ease;
}

.expertise-nav a:hover {
  color: var(--bleu-700);
  background: var(--brume);
}

.expertise-nav .num {
  font-family: var(--font-display);
  font-size: 0.76rem;
  letter-spacing: 0.12em;
  color: var(--bleu-700);
}

/* ----------------------------- Figures & notes ----------------------------- */
.figure {
  margin: 0;
}

.figure + .figure {
  margin-top: 0.8rem;
}

.figure figcaption,
.section-note {
  margin-top: 0.75rem;
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--ardoise);
}

.section-note {
  max-width: 62ch;
}

/* ----------------------------- Galerie bornes ----------------------------- */
.bornes-strip {
  display: flex;
  gap: 0.8rem;
  overflow-x: auto;
  padding-bottom: 0.8rem;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.borne {
  flex: 0 0 auto;
  width: clamp(118px, 12.5vw, 164px);
  aspect-ratio: 3 / 4;
  overflow: hidden;
  border-radius: 4px;
  background: var(--brume);
  scroll-snap-align: start;
}

.borne img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.bornes-strip::-webkit-scrollbar {
  height: 6px;
}

.bornes-strip::-webkit-scrollbar-thumb {
  background: var(--ligne-forte);
  border-radius: 3px;
}

/* ----------------------------- Bandeau citation ----------------------------- */
.quote-band {
  background: var(--nuit);
  color: #e7edf5;
}

.quote-band blockquote {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.45rem, 3.1vw, 2.3rem);
  font-weight: 500;
  line-height: 1.32;
  letter-spacing: -0.015em;
  max-width: 34ch;
  color: #fff;
}

.quote-band cite {
  display: block;
  margin-top: 1.5rem;
  font-style: normal;
  font-size: 0.9rem;
  color: #93a5ba;
}

.citation {
  text-align: center;
}

.citation blockquote {
  margin: 0 auto;
  max-width: 26ch;
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3.6vw, 2.7rem);
  font-weight: 500;
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--nuit);
}

.citation cite {
  display: block;
  margin-top: 1.3rem;
  font-style: normal;
  font-size: 0.88rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ardoise);
}

/* ----------------------------- Bandeau CTA ----------------------------- */
.cta-band {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--nuit);
  color: #fff;
}

.cta-band-bg {
  position: absolute;
  inset: 0;
  z-index: -2;
}

.cta-band-bg img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.cta-band::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(
    100deg,
    rgba(10, 20, 32, 0.94) 0%,
    rgba(10, 20, 32, 0.72) 55%,
    rgba(10, 20, 32, 0.45) 100%
  );
}

.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2.5rem;
  padding-block: clamp(3.4rem, 7vw, 5.4rem);
}

.cta-inner h2 {
  color: #fff;
  font-size: clamp(1.8rem, 3.6vw, 2.8rem);
}

.cta-inner p {
  margin-top: 0.9rem;
  max-width: 55ch;
  color: #c3cfdd;
}

/* ----------------------------- Pied de page ----------------------------- */
.site-footer {
  background: var(--nuit);
  color: #c3cfdd;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.45fr 1fr 1fr 1fr;
  gap: 2.5rem;
  padding-block: clamp(3rem, 6vw, 4.6rem);
}

.footer-brand img {
  display: block;
  height: 36px;
  width: auto;
}

.footer-brand p {
  margin-top: 1.2rem;
  font-size: 0.92rem;
  line-height: 1.65;
  max-width: 34ch;
  color: #93a5ba;
}

.footer-title {
  margin: 0 0 1.1rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: #7d90a6;
}

.footer-list {
  list-style: none;
  display: grid;
  gap: 0.6rem;
  font-size: 0.92rem;
}

.footer-list a {
  color: #dfe7f0;
  text-decoration: none;
}

.footer-list a:hover {
  color: #7cc4ff;
}

.footer-note {
  font-size: 0.92rem;
  color: #93a5ba;
}

.footer-note strong {
  display: block;
  color: #dfe7f0;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.footer-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin-top: 1.2rem;
  font-size: 0.92rem;
  font-weight: 600;
  color: #7cc4ff;
  text-decoration: none;
}

.footer-cta:hover {
  color: #fff;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.82rem;
  color: #7d90a6;
}

/* ----------------------------- Partenaires ----------------------------- */
.partners-wall {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
}

.partner-tile {
  flex: 0 1 250px;
  display: grid;
  place-items: center;
  min-height: 124px;
  padding: 1.3rem 1.4rem;
  background: #fff;
  border: 1px solid var(--ligne);
  border-radius: var(--radius);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.partner-tile:hover {
  transform: translateY(-3px);
  border-color: var(--ligne-forte);
  box-shadow: 0 22px 44px -32px rgba(10, 20, 32, 0.45);
}

.partner-tile img {
  display: block;
  width: 100%;
  height: 64px;
  object-fit: contain;
}

.partner-tile--dark {
  background: var(--nuit);
  border-color: var(--nuit);
}

.partner-tile--dark:hover {
  border-color: var(--bleu);
}

/* Bandeau défilant des partenaires (accueil) */
.partners-marquee {
  position: relative;
  overflow: hidden;
  -webkit-mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
  mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
}

.marquee-track {
  display: flex;
  width: max-content;
  animation: marquee-defilement 50s linear infinite;
}

.partners-marquee:hover .marquee-track,
.partners-marquee:focus-within .marquee-track {
  animation-play-state: paused;
}

.marquee-group {
  display: flex;
  align-items: center;
  gap: clamp(2.2rem, 4.5vw, 3.8rem);
  padding-right: clamp(2.2rem, 4.5vw, 3.8rem);
}

.marquee-group img {
  display: block;
  height: 52px;
  width: auto;
}

@keyframes marquee-defilement {
  to {
    transform: translateX(-50%);
  }
}

/* ----------------------------- Contact ----------------------------- */
.contact-layout {
  display: grid;
  grid-template-columns: 1.12fr 0.88fr;
  align-items: start;
  gap: clamp(2rem, 5vw, 4rem);
}

.contact-form {
  padding: clamp(1.6rem, 3vw, 2.4rem);
  background: #fff;
  border: 1px solid var(--ligne);
  border-radius: var(--radius);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.15rem;
}

.field {
  display: grid;
  gap: 0.4rem;
}

.field--full {
  grid-column: 1 / -1;
}

.field label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--nuit);
}

.field .requis {
  color: var(--bleu-700);
}

.field .aide {
  font-size: 0.78rem;
  color: var(--ardoise);
}

input,
select,
textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  font: inherit;
  font-size: 0.95rem;
  color: var(--encre);
  background: #fff;
  border: 1px solid var(--ligne-forte);
  border-radius: 4px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

input::placeholder,
textarea::placeholder {
  color: #97a3b2;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--bleu);
  box-shadow: 0 0 0 3px rgba(0, 138, 249, 0.16);
}

textarea {
  min-height: 150px;
  resize: vertical;
}

input[aria-invalid='true'],
select[aria-invalid='true'],
textarea[aria-invalid='true'] {
  border-color: #c0392b;
}

.case {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  font-size: 0.88rem;
  color: var(--ardoise);
}

.case input {
  width: auto;
  margin-top: 0.2rem;
  accent-color: var(--bleu-700);
}

.form-status {
  display: none;
  margin-top: 1.1rem;
  padding: 0.95rem 1.15rem;
  border-radius: 4px;
  font-size: 0.9rem;
  line-height: 1.5;
}

.form-status.is-visible {
  display: block;
}

.form-status.is-success {
  background: #e8f7ee;
  color: #1d6f3f;
}

.form-status.is-error {
  background: #fdeceb;
  color: #a53227;
}

.form-status.is-info {
  background: var(--azur);
  color: var(--bleu-800);
}

.contact-aside {
  display: grid;
  gap: 1rem;
}

.info-card {
  padding: 1.5rem;
  background: #fff;
  border: 1px solid var(--ligne);
  border-radius: var(--radius);
}

.info-card h2,
.info-card h3 {
  font-size: 1rem;
  margin-bottom: 0.7rem;
}

.info-card p {
  font-size: 0.9rem;
  color: var(--ardoise);
}

.info-list {
  list-style: none;
  display: grid;
  gap: 0.5rem;
  margin-top: 0.7rem;
  font-size: 0.9rem;
  color: var(--ardoise);
}

.info-list li {
  position: relative;
  padding-left: 1.1rem;
}

.info-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--bleu);
}

.info-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.6rem 0;
  border-top: 1px solid var(--ligne);
  font-size: 0.88rem;
}

.info-row:first-of-type {
  border-top: 0;
}

.info-row strong {
  font-weight: 600;
  color: var(--nuit);
}

.info-row span {
  color: var(--ardoise);
  font-style: italic;
}

.info-row a {
  font-style: normal;
}

.contact-photo {
  overflow: hidden;
  border-radius: var(--radius);
  aspect-ratio: 4 / 5;
  background: var(--brume);
}

.contact-photo img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ----------------------------- Bottom navigation mobile (Instagram-like) ----------------------------- */
.bottom-nav {
  display: none;
}

/* ----------------------------- Adaptations ----------------------------- */
@media (max-width: 1080px) {
  .footer-grid {
    grid-template-columns: 1.3fr 1fr 1fr;
  }

  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 1020px) {
  .nav-toggle {
    display: flex;
  }

  .main-nav {
    position: fixed;
    inset: 0;
    z-index: -1;
    flex-direction: column;
    justify-content: center;
    gap: 2.2rem;
    padding: 6rem var(--gouttiere) 3rem;
    background: var(--nuit);
    overflow-y: auto;
    visibility: hidden;
    transform: translateY(-100%);
    transition: transform 0.4s cubic-bezier(0.22, 0.61, 0.36, 1),
      visibility 0s linear 0.4s;
  }

  body.nav-open .main-nav {
    visibility: visible;
    transform: none;
    transition: transform 0.4s cubic-bezier(0.22, 0.61, 0.36, 1),
      visibility 0s;
  }

  .main-nav ul {
    flex-direction: column;
    gap: 1.1rem;
  }

  .nav-link {
    font-family: var(--font-display);
    font-size: clamp(1.25rem, 4.2vw, 1.7rem);
    font-weight: 500;
    color: #e7edf5;
  }

  .nav-link::after {
    display: none;
  }

  .nav-link[aria-current='page'] {
    color: #7cc4ff;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 2.6rem;
  }

  .hero-copy .lead {
    max-width: 60ch;
  }

  .hero-media {
    aspect-ratio: 16 / 10;
  }

  .feature-realisation {
    grid-template-columns: minmax(0, 1fr);
  }

  .feature-media {
    min-height: 280px;
    aspect-ratio: 16 / 9;
  }

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

  .contact-aside {
    grid-template-columns: repeat(2, 1fr);
    align-items: start;
  }

  .contact-photo {
    aspect-ratio: 4 / 3;
  }
}

@media (max-width: 740px) {
  .nav-toggle {
    display: none;
  }

  .main-nav {
    display: none;
  }

  .bottom-nav {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 120;
    display: flex;
    align-items: center;
    justify-content: space-around;
    gap: 0.2rem;
    height: calc(60px + env(safe-area-inset-bottom, 0px));
    padding: 0 0.35rem env(safe-area-inset-bottom, 0px);
    background: rgba(255, 255, 255, 0.96);
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
    border-top: 1px solid var(--ligne);
  }

  .bottom-nav a {
    flex: 1 1 0;
    min-width: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.15rem;
    padding: 0.35rem 0.1rem 0.2rem;
    color: var(--ardoise);
    text-decoration: none;
    font-size: 0.62rem;
    font-weight: 500;
    line-height: 1.1;
    transition: color 0.2s ease, transform 0.2s ease;
    -webkit-tap-highlight-color: transparent;
  }

  .bottom-nav a svg {
    width: 24px;
    height: 24px;
    stroke: currentColor;
    fill: none;
    stroke-width: 1.8;
    stroke-linecap: round;
    stroke-linejoin: round;
    transition: transform 0.2s ease, stroke-width 0.2s ease;
  }

  .bottom-nav a span {
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .bottom-nav a[aria-current='page'] {
    color: var(--nuit);
    font-weight: 600;
  }

  .bottom-nav a[aria-current='page'] svg {
    stroke-width: 2.2;
  }

  .bottom-nav a:active {
    transform: scale(0.94);
  }

  body {
    padding-bottom: calc(64px + env(safe-area-inset-bottom, 0px));
  }

  .site-footer {
    padding-bottom: 0.2rem;
  }
}

@media (max-width: 900px) {
  .section-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.9rem;
  }

  .split {
    grid-template-columns: 1fr;
  }

  .split--media-first .split-media {
    order: 0;
  }

  .split-media {
    aspect-ratio: 16 / 10;
  }

  .split-media--portrait {
    aspect-ratio: 4 / 3;
  }

  .realisations-grid,
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .realisation-card--large {
    grid-column: span 2;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .stat {
    border-left: 0;
    border-top: 1px solid var(--ligne);
    padding-inline: 0;
    padding-right: 1.2rem;
  }

  .stat:nth-child(odd) {
    padding-right: 1.2rem;
  }

  .stat:nth-child(even) {
    padding-left: 1.2rem;
    border-left: 1px solid var(--ligne);
  }

  .stat:nth-child(-n + 2) {
    border-top: 0;
  }

  .cta-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 740px) {
  .grid-2,
  .expertise-grid,
  .services-grid {
    grid-template-columns: 1fr;
  }

  .expertise-nav li {
    flex-basis: 100%;
    border-left: 0;
    border-top: 1px solid var(--ligne);
  }

  .expertise-nav li:first-child {
    border-top: 0;
  }

  .realisations-grid,
  .grid-3 {
    grid-template-columns: 1fr;
  }

  .realisation-card--large {
    grid-column: auto;
  }

  .contact-aside {
    grid-template-columns: 1fr;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }

  .timeline li {
    padding-left: 3.4rem;
  }

  .timeline li::before {
    width: 2.2rem;
    height: 2.2rem;
  }

  .timeline li::after {
    left: 1.1rem;
  }

  .marquee-group img {
    height: 40px;
    width: auto;
  }
}

@media (max-width: 560px) {
  .brand img {
    height: 28px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .btn-group .btn {
    width: 100%;
  }

  .quote-band blockquote {
    font-size: 1.4rem;
  }
}

/* ----------------------------- Préférences ----------------------------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  html.js .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .partners-marquee .marquee-track {
    animation: none;
    flex-wrap: wrap;
    justify-content: center;
    width: 100%;
  }

  .realisation-card:hover .media img,
  .realisation-card:hover .media-pair img,
  .card:hover,
  .btn--primary:hover {
    transform: none;
  }

  .nav-link::after,
  .expertise-card::before,
  .link-arrow::after {
    transition: none;
  }
}