/* ============================================================
   Pista Studio — Normes graphiques v2
   Noir sur crème, filets hairline, majuscules espacées.
   Registre éditorial, aligné à gauche.
   Rouge #E0231A: accent rare et volontaire.
   ============================================================ */

:root {
  --noir: #0a0a0a;
  --creme: #f4f3ee;
  --blanc: #ffffff;
  --gris-moyen: #6f6f6b;
  --gris-clair: #9b9b97;
  --rouge: #e0231a;
  --vert: #12a150;
  --filet: #deddd6;          /* hairline, gris très clair sur crème */
  --filet-noir: #2c2c2a;     /* hairline sur fond noir */
  --max-width: 1240px;
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --font: "Söhne", "Test Söhne", "Inter", Arial, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--creme);
  color: var(--noir);
  line-height: 1.6;
  font-size: 1.0625rem;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
}

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

.container {
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* ------------------------------------------------------------
   Voix typographique: majuscules espacées
   ------------------------------------------------------------ */
.label {
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--gris-moyen);
}

.label--noir {
  color: var(--noir);
}

.label--clair {
  color: var(--gris-clair);
}

/* ------------------------------------------------------------
   Le wordmark — graisse régulière, jamais grasse
   ------------------------------------------------------------ */
.wordmark {
  font-weight: 400;
  font-size: 1.3125rem;
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.dot {
  color: inherit;
}

.dot--rouge {
  color: var(--rouge);
}

/* ------------------------------------------------------------
   En-tête — registre éditorial
   ------------------------------------------------------------ */
.topbar {
  border-bottom: 1px solid var(--filet);
  padding: 0.55rem 0;
}

.topbar .label {
  font-size: 0.5625rem;
  letter-spacing: 0.4em;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(244, 243, 238, 0.94);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--filet);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.25rem;
  list-style: none;
}

.nav-links a {
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--gris-moyen);
  transition: color 0.2s ease;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--noir);
}

.lang-switch {
  padding: 0.4rem 0.85rem;
  border: 1px solid var(--gris-clair);
  border-radius: 999px;
  transition: all 0.2s ease;
}

.nav-links a.lang-switch {
  letter-spacing: 0.15em;
}

.lang-switch:hover {
  background: var(--noir);
  border-color: var(--noir);
  color: var(--creme) !important;
}

/* Menu mobile */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 40px;
  height: 40px;
  position: relative;
}

.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  left: 8px;
  width: 24px;
  height: 1px;
  background: var(--noir);
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.nav-toggle span {
  top: 19px;
}

.nav-toggle span::before {
  left: 0;
  top: -7px;
}

.nav-toggle span::after {
  left: 0;
  top: 7px;
}

.nav-toggle[aria-expanded="true"] span {
  background: transparent;
}

.nav-toggle[aria-expanded="true"] span::before {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span::after {
  transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 900px) {
  .nav-toggle {
    display: block;
  }

  .nav-links {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: var(--creme);
    border-bottom: 1px solid var(--filet);
    padding: 0.5rem var(--gutter) 1.5rem;
    display: none;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links li {
    width: 100%;
  }

  .nav-links a {
    display: block;
    padding: 0.9rem 0;
    font-size: 0.8125rem;
  }

  .nav-links a.lang-switch {
    display: inline-block;
    margin-top: 0.75rem;
  }
}

/* ------------------------------------------------------------
   Héros — couverture de magazine, du surtitre vers le bas
   ------------------------------------------------------------ */
.hero {
  padding: clamp(4.5rem, 11vw, 9rem) 0 clamp(4rem, 9vw, 7rem);
}

.hero .label {
  display: block;
  margin-bottom: 2.25rem;
}

.hero h1 {
  font-size: clamp(3rem, 9vw, 7rem);
  font-weight: 400;
  letter-spacing: -0.03em;
  line-height: 1;
}

.hero .signature {
  display: block;
  margin-top: 2rem;
  font-size: 0.8125rem;
  font-weight: 400;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--noir);
}

.hero .lead {
  margin-top: 2.5rem;
  font-size: clamp(1.0625rem, 1.8vw, 1.25rem);
  color: var(--gris-moyen);
  max-width: 54ch;
}

.hero-actions {
  margin-top: 3rem;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Héros des pages intérieures */
.page-hero {
  padding: clamp(3.5rem, 8vw, 6rem) 0 clamp(2.5rem, 5vw, 4rem);
}

.page-hero .label {
  display: block;
  margin-bottom: 1.75rem;
}

.page-hero h1 {
  font-size: clamp(2.75rem, 7vw, 7.25rem);
  font-weight: 200;
  letter-spacing: -0.035em;
  line-height: 0.95;
}

.page-hero .lead {
  margin-top: 1.75rem;
  font-size: 1.1875rem;
  color: var(--gris-moyen);
  max-width: 56ch;
}

/* ------------------------------------------------------------
   Boutons
   ------------------------------------------------------------ */
.btn {
  display: inline-block;
  font-weight: 500;
  font-size: 0.6875rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  padding: 1rem 2rem;
  border-radius: 999px;
  transition: all 0.2s ease;
}

.btn-primary {
  background: var(--noir);
  color: var(--creme);
  border: 1px solid var(--noir);
}

.btn-primary:hover {
  background: transparent;
  color: var(--noir);
}

.btn-secondary {
  border: 1px solid var(--gris-clair);
  color: var(--noir);
}

.btn-secondary:hover {
  border-color: var(--noir);
}

.btn-creme {
  background: var(--creme);
  color: var(--noir);
  border: 1px solid var(--creme);
}

.btn-creme:hover {
  background: transparent;
  color: var(--creme);
}

/* ------------------------------------------------------------
   Sections — séparées par des filets fins
   ------------------------------------------------------------ */
.section {
  padding: clamp(3.5rem, 8vw, 6.5rem) 0;
}

.section + .section {
  border-top: 1px solid var(--filet);
}

.section .label {
  display: block;
  margin-bottom: 1.5rem;
}

.section h2 {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 500;
  letter-spacing: -0.01em;
  line-height: 1.15;
  max-width: 26ch;
}

.section .intro {
  margin-top: 1.25rem;
  font-size: 1.125rem;
  color: var(--gris-moyen);
  max-width: 58ch;
}

/* ------------------------------------------------------------
   Les trois expertises PSM — filets fins verticaux
   ------------------------------------------------------------ */
.expertises {
  margin-top: 3.5rem;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--filet);
  border-bottom: 1px solid var(--filet);
}

.expertise {
  padding: 2.5rem 2rem 2.5rem 0;
}

.expertise + .expertise {
  border-left: 1px solid var(--filet);
  padding-left: 2rem;
}

.expertise .psm {
  font-size: 2rem;
  font-weight: 400;
  letter-spacing: 0;
  line-height: 1;
}

.expertise .expertise-nom {
  display: block;
  margin-top: 1.25rem;
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.3em;
  text-transform: uppercase;
}

.expertise .expertise-descripteur {
  display: block;
  margin-top: 0.4rem;
  font-size: 0.5625rem;
  font-weight: 400;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--gris-moyen);
}

.expertise p {
  margin-top: 1.25rem;
  font-size: 0.9375rem;
  color: var(--gris-moyen);
}

@media (max-width: 820px) {
  .expertises {
    grid-template-columns: 1fr;
  }

  .expertise {
    padding: 2rem 0;
  }

  .expertise + .expertise {
    border-left: none;
    border-top: 1px solid var(--filet);
    padding-left: 0;
  }
}

.devise {
  margin-top: 2rem;
  font-size: 0.6875rem;
  font-weight: 400;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--gris-clair);
}

/* Monogramme PSM encadré — filet fin, jamais un aplat */
.psm-embleme {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--noir);
  padding: 0.75rem 1.1rem;
  font-size: 1.5rem;
  font-weight: 400;
  line-height: 1;
}

/* ------------------------------------------------------------
   Photographie — bloc plein, sans cadre ni ombre
   ------------------------------------------------------------ */
.photo-bloc {
  padding: 0;
}

.photo-bloc img {
  width: 100%;
  height: clamp(320px, 55vw, 640px);
  object-fit: cover;
}

.photo-caption {
  padding: 1.25rem 0 0;
}

/* ------------------------------------------------------------
   Panneau noir — moment artistique
   ------------------------------------------------------------ */
.panel-noir {
  background: var(--noir);
  color: var(--creme);
  padding: clamp(4rem, 10vw, 8rem) 0;
  overflow: hidden;
}

.panel-noir .label {
  color: var(--gris-clair);
}

.panel-noir h2,
.panel-noir .credo {
  color: var(--creme);
}

.credo {
  font-size: clamp(1.75rem, 4.5vw, 3.25rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.2;
  max-width: 24ch;
}

/* Marquee — la piste qui défile */
.marquee {
  border-top: 1px solid var(--filet-noir);
  border-bottom: 1px solid var(--filet-noir);
  padding: 1.5rem 0;
  margin-bottom: clamp(3rem, 7vw, 5rem);
  white-space: nowrap;
  overflow: hidden;
}

.marquee-inner {
  display: inline-block;
  animation: defile 28s linear infinite;
}

.marquee-inner span {
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px var(--gris-moyen);
  padding-right: 3rem;
}

.marquee-inner span i {
  font-style: normal;
  -webkit-text-stroke: 0;
  color: var(--rouge);
}

@keyframes defile {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* ------------------------------------------------------------
   Panneau rouge — l'accent rare et volontaire
   ------------------------------------------------------------ */
.panel-rouge {
  background: var(--rouge);
  color: var(--creme);
  padding: clamp(4rem, 10vw, 7.5rem) 0;
}

.panel-rouge .label {
  color: rgba(244, 243, 238, 0.75);
}

.panel-rouge h2 {
  color: var(--creme);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.1;
  max-width: 20ch;
}

.panel-rouge .intro {
  color: rgba(244, 243, 238, 0.85);
}

.panel-rouge .btn-primary {
  background: var(--noir);
  border-color: var(--noir);
  color: var(--creme);
}

.panel-rouge .btn-primary:hover {
  background: var(--creme);
  border-color: var(--creme);
  color: var(--noir);
}

/* ------------------------------------------------------------
   Ligne d'arrivée — filet damier, clin d'œil discret
   ------------------------------------------------------------ */
.finish-line {
  height: 12px;
  background:
    repeating-conic-gradient(var(--noir) 0% 25%, transparent 0% 50%)
    0 0 / 12px 12px;
  opacity: 0.9;
}

/* ------------------------------------------------------------
   Bandeau clients
   ------------------------------------------------------------ */
.clients-strip {
  margin-top: 3rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem 3rem;
}

.clients-strip span {
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gris-clair);
  transition: color 0.2s ease;
}

.clients-strip span:hover {
  color: var(--noir);
}

/* Logos clients — monochromes, noircissent au survol */
.client-logos {
  display: flex;
  align-items: center;
  gap: clamp(2.5rem, 6vw, 5rem);
  margin-top: 3rem;
  flex-wrap: wrap;
}

.client-logos svg {
  height: clamp(44px, 6vw, 64px);
  width: auto;
  color: var(--gris-clair);
  transition: color 0.3s ease;
}

.client-logos svg:hover {
  color: var(--noir);
}

/* ------------------------------------------------------------
   Réalisations
   ------------------------------------------------------------ */
.work-list {
  margin-top: 3rem;
}

.work-item {
  border-top: 1px solid var(--filet);
  padding: 2.25rem 0;
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 2rem;
  transition: padding-left 0.25s ease;
}

.work-item:last-child {
  border-bottom: 1px solid var(--filet);
}

.work-item:hover {
  padding-left: 0.75rem;
}

.work-item h3 {
  font-size: 1.375rem;
  font-weight: 500;
  letter-spacing: -0.01em;
}

.work-item .work-tag {
  display: block;
  margin-top: 0.6rem;
  font-size: 0.5625rem;
  font-weight: 500;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--gris-clair);
}

.work-item p {
  color: var(--gris-moyen);
  font-size: 0.9875rem;
}

@media (max-width: 720px) {
  .work-item {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
}

/* ------------------------------------------------------------
   Grille de cartes (services détaillés)
   ------------------------------------------------------------ */
.grid {
  display: grid;
  gap: 0;
  margin-top: 3rem;
  border-top: 1px solid var(--filet);
}

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

@media (max-width: 720px) {
  .grid-2 {
    grid-template-columns: 1fr;
  }
}

.card {
  border-bottom: 1px solid var(--filet);
  padding: 2.25rem 2rem 2.25rem 0;
}

.grid-2 .card:nth-child(odd) {
  border-right: 1px solid var(--filet);
}

.grid-2 .card:nth-child(even) {
  padding-left: 2rem;
}

@media (max-width: 720px) {
  .grid-2 .card:nth-child(odd) {
    border-right: none;
  }

  .grid-2 .card:nth-child(even) {
    padding-left: 0;
  }
}

.card .card-number {
  display: block;
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.3em;
  color: var(--gris-clair);
  margin-bottom: 1.25rem;
}

.card h3 {
  font-size: 1.1875rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  margin-bottom: 0.75rem;
}

.card p {
  color: var(--gris-moyen);
  font-size: 0.9875rem;
}

/* ------------------------------------------------------------
   Bloc signature
   ------------------------------------------------------------ */
.signature-block {
  padding: clamp(4rem, 10vw, 7rem) 0;
}

.signature-block p {
  font-size: clamp(1.75rem, 4vw, 3rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.2;
  max-width: 24ch;
}

/* ------------------------------------------------------------
   Formulaire de contact
   ------------------------------------------------------------ */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 4rem;
  margin-top: 3rem;
}

@media (max-width: 860px) {
  .contact-layout {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
}

.contact-info h3 {
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--gris-clair);
  margin-bottom: 0.5rem;
}

.contact-info p {
  margin-bottom: 1.75rem;
  color: var(--gris-moyen);
}

.contact-info a {
  color: var(--noir);
  font-weight: 500;
  border-bottom: 1px solid var(--gris-clair);
  transition: border-color 0.2s ease;
}

.contact-info a:hover {
  border-color: var(--noir);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  margin-bottom: 0.6rem;
}

.form-group input,
.form-group textarea {
  width: 100%;
  font-family: var(--font);
  font-size: 1rem;
  padding: 0.85rem 1rem;
  border: 1px solid var(--gris-clair);
  border-radius: 0;
  background: transparent;
  color: var(--noir);
  transition: border-color 0.2s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--noir);
}

.form-note {
  font-size: 0.875rem;
  color: var(--gris-clair);
  margin-top: 1rem;
}

/* ------------------------------------------------------------
   Pied de page — registre éditorial
   ------------------------------------------------------------ */
.site-footer {
  border-top: 1px solid var(--filet);
  padding: 3.5rem 0 2.5rem;
  margin-top: clamp(2rem, 6vw, 4rem);
}

.footer-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}

.footer-top .tagline {
  margin-top: 0.75rem;
  font-size: 0.625rem;
  font-weight: 400;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--gris-moyen);
}

.footer-links {
  display: flex;
  gap: 2rem;
  list-style: none;
  flex-wrap: wrap;
}

.footer-links a {
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--gris-moyen);
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: var(--noir);
}

.footer-expertises {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--filet);
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 0;
  font-size: 0.625rem;
  font-weight: 500;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--gris-moyen);
}

.footer-expertises span {
  padding-right: 1.25rem;
}

.footer-expertises span + span {
  border-left: 1px solid var(--filet);
  padding-left: 1.25rem;
}

.footer-bottom {
  margin-top: 1.75rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--filet);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.75rem;
  color: var(--gris-clair);
}

/* ------------------------------------------------------------
   La piste — panneau noir, tracé animé, point rouge qui roule
   ------------------------------------------------------------ */
.track-panel {
  position: relative;
  background: var(--noir);
  color: var(--creme);
  min-height: 72vh;
  display: flex;
  align-items: flex-end;
  padding: 3.5rem 0;
  overflow: hidden;
}

.track-svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.track-path {
  fill: none;
  stroke: rgba(244, 243, 238, 0.28);
  stroke-width: 2;
  stroke-dasharray: 2600;
  stroke-dashoffset: 2600;
  animation: trace 3.2s ease-out forwards;
}

@keyframes trace {
  to { stroke-dashoffset: 0; }
}

.track-dot {
  position: absolute;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--rouge);
  box-shadow: 0 0 18px rgba(224, 35, 26, 0.6);
  offset-path: path("M -30 330 C 180 90, 420 60, 610 220 C 770 350, 980 380, 1240 130");
  animation: roule 7s linear infinite;
}

@keyframes roule {
  from { offset-distance: 0%; }
  to   { offset-distance: 100%; }
}

.track-panel .container {
  position: relative;
  z-index: 2;
}

.track-word {
  font-size: clamp(5rem, 17vw, 14rem);
  font-weight: 200;
  letter-spacing: -0.04em;
  line-height: 0.9;
  color: transparent;
  -webkit-text-stroke: 1.5px rgba(244, 243, 238, 0.85);
  transition: color 0.6s ease;
}

.track-word:hover {
  color: var(--creme);
}

.track-word .dot--rouge {
  -webkit-text-stroke: 0;
  color: var(--rouge);
}

.track-panel .label {
  display: block;
  margin-top: 1rem;
}

@media (max-width: 900px) {
  .track-panel {
    min-height: 55vh;
  }
}

/* ------------------------------------------------------------
   Feux de départ — cinq points qui s'allument
   ------------------------------------------------------------ */
.lights {
  display: flex;
  gap: 12px;
  margin-bottom: 30px;
}

.lights i {
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: rgba(10, 10, 10, 0.1);
  animation-duration: 6s;
  animation-iteration-count: infinite;
}

/* Cinq feux rouges qui s'allument un à un, extinction simultanée à mi-cycle */
.lights i:nth-child(1) { animation-name: feu1; }
.lights i:nth-child(2) { animation-name: feu2; }
.lights i:nth-child(3) { animation-name: feu3; }
.lights i:nth-child(4) { animation-name: feu4; }
.lights i:nth-child(5) { animation-name: feu5; }

@keyframes feu1 {
  0%, 7.9% { background: rgba(10, 10, 10, 0.1); box-shadow: none; }
  8%, 49.9% { background: var(--rouge); box-shadow: 0 0 14px rgba(224, 35, 26, 0.5); }
  50%, 100% { background: rgba(10, 10, 10, 0.1); box-shadow: none; }
}

@keyframes feu2 {
  0%, 15.9% { background: rgba(10, 10, 10, 0.1); box-shadow: none; }
  16%, 49.9% { background: var(--rouge); box-shadow: 0 0 14px rgba(224, 35, 26, 0.5); }
  50%, 100% { background: rgba(10, 10, 10, 0.1); box-shadow: none; }
}

@keyframes feu3 {
  0%, 23.9% { background: rgba(10, 10, 10, 0.1); box-shadow: none; }
  24%, 49.9% { background: var(--rouge); box-shadow: 0 0 14px rgba(224, 35, 26, 0.5); }
  50%, 100% { background: rgba(10, 10, 10, 0.1); box-shadow: none; }
}

@keyframes feu4 {
  0%, 31.9% { background: rgba(10, 10, 10, 0.1); box-shadow: none; }
  32%, 49.9% { background: var(--rouge); box-shadow: 0 0 14px rgba(224, 35, 26, 0.5); }
  50%, 100% { background: rgba(10, 10, 10, 0.1); box-shadow: none; }
}

@keyframes feu5 {
  0%, 39.9% { background: rgba(10, 10, 10, 0.1); box-shadow: none; }
  40%, 49.9% { background: var(--rouge); box-shadow: 0 0 14px rgba(224, 35, 26, 0.5); }
  50%, 100% { background: rgba(10, 10, 10, 0.1); box-shadow: none; }
}

/* ------------------------------------------------------------
   Curseur — le point signature suit la souris
   ------------------------------------------------------------ */
.cursor-dot {
  position: fixed;
  top: 0;
  left: 0;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--rouge);
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%, -50%);
  transition: width 0.25s ease, height 0.25s ease, opacity 0.25s ease;
  opacity: 0;
}

.cursor-dot.actif {
  opacity: 0.9;
}

.cursor-dot.grossi {
  width: 34px;
  height: 34px;
  opacity: 0.25;
}

/* ------------------------------------------------------------
   Barre de progression — un tour de piste en défilant
   ------------------------------------------------------------ */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  background: var(--rouge);
  z-index: 200;
}


/* ------------------------------------------------------------
   Index des secteurs — sommaire de magazine
   ------------------------------------------------------------ */
.sector-index {
  margin-top: 3rem;
}

.sector-row {
  display: grid;
  grid-template-columns: 4.5rem 1fr auto;
  align-items: baseline;
  gap: 1.5rem;
  padding: 2rem 0;
  border-top: 1px solid var(--filet);
  transition: padding-left 0.25s ease;
}

.sector-row:last-child {
  border-bottom: 1px solid var(--filet);
}

.sector-row:hover {
  padding-left: 0.75rem;
}

.sector-row .sector-num {
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.3em;
  color: var(--gris-clair);
}

.sector-row .sector-titre {
  font-size: clamp(1.5rem, 3.5vw, 2.5rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.sector-row .sector-titre .dot {
  color: var(--gris-clair);
  transition: color 0.25s ease;
}

.sector-row:hover .sector-titre .dot {
  color: var(--rouge);
}

.sector-row .sector-sous {
  display: block;
  margin-top: 0.35rem;
  font-size: 0.625rem;
  font-weight: 500;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--gris-moyen);
}

.sector-row .sector-fleche {
  font-size: 1.5rem;
  color: var(--gris-clair);
  transition: transform 0.25s ease, color 0.25s ease;
}

.sector-row:hover .sector-fleche {
  transform: translateX(6px);
  color: var(--noir);
}

@media (max-width: 640px) {
  .sector-row {
    grid-template-columns: 3rem 1fr auto;
    gap: 1rem;
  }
}

/* Liste d'inclusions sur les pages secteurs */
.inclus-liste {
  margin-top: 3rem;
  list-style: none;
}

.inclus-liste li {
  border-top: 1px solid var(--filet);
  padding: 1.5rem 0;
  display: grid;
  grid-template-columns: 4.5rem 1fr;
  gap: 1.5rem;
  align-items: baseline;
}

.inclus-liste li:last-child {
  border-bottom: 1px solid var(--filet);
}

.inclus-liste .inclus-num {
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.3em;
  color: var(--gris-clair);
}

.inclus-liste h3 {
  font-size: 1.1875rem;
  font-weight: 500;
  letter-spacing: -0.01em;
}

.inclus-liste p {
  margin-top: 0.5rem;
  color: var(--gris-moyen);
  font-size: 0.9875rem;
}

/* ------------------------------------------------------------
   Grosses inscriptions — graisse fine, accent rouge
   ------------------------------------------------------------ */
.kicker {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gris-clair);
  border-left: 2px solid var(--rouge);
  padding-left: 12px;
  margin-bottom: 1.75rem;
}

.giant {
  font-size: clamp(2.75rem, 7vw, 7.25rem);
  font-weight: 200;
  letter-spacing: -0.035em;
  line-height: 0.95;
  text-wrap: balance;
}

.giant .accent {
  color: var(--rouge);
  font-weight: 300;
}

.lede {
  margin-top: 1.75rem;
  font-size: clamp(1.1875rem, 2.2vw, 1.875rem);
  font-weight: 300;
  color: var(--gris-moyen);
}

.lede b {
  color: var(--noir);
  font-weight: 500;
}

.red-rule {
  width: 48px;
  height: 3px;
  background: var(--rouge);
  margin-top: 2.25rem;
}

.intro-strip {
  border-top: 1px solid var(--filet);
  border-bottom: 1px solid var(--filet);
  padding: clamp(2.25rem, 5vw, 3.5rem) 0;
}

.intro-strip p {
  font-size: clamp(1.25rem, 2.6vw, 2.125rem);
  font-weight: 300;
  letter-spacing: -0.01em;
  line-height: 1.35;
}

.intro-strip p span {
  color: var(--gris-clair);
}

.count-big {
  font-size: clamp(3.5rem, 10vw, 8.75rem);
  font-weight: 200;
  line-height: 0.95;
  letter-spacing: -0.03em;
  margin: 0.6rem 0 0.85rem;
}

.count-big em {
  color: var(--rouge);
  font-style: normal;
}

/* ------------------------------------------------------------
   Liste de services — chiffres fantômes, barre rouge au survol
   ------------------------------------------------------------ */
.svc-list {
  margin-top: clamp(2.25rem, 4vw, 3.5rem);
}

.svc-row {
  position: relative;
  display: block;
  padding: clamp(2.5rem, 5.5vw, 4.5rem) 0;
  border-bottom: 1px solid var(--filet);
  transition: padding-left 0.4s cubic-bezier(0.2, 0.7, 0.2, 1);
  overflow: hidden;
}

.svc-row:first-child {
  border-top: 1px solid var(--filet);
}

.svc-row::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 2px;
  height: 0;
  background: var(--rouge);
  transition: height 0.4s ease;
}

.svc-row:hover {
  padding-left: 22px;
}

.svc-row:hover::before {
  height: 56%;
}

.svc-ghost {
  position: absolute;
  top: 50%;
  right: 0;
  transform: translateY(-50%);
  font-size: clamp(7rem, 20vw, 18rem);
  font-weight: 200;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(10, 10, 10, 0.09);
  pointer-events: none;
  z-index: 0;
  transition: -webkit-text-stroke-color 0.4s ease;
}

.svc-row:hover .svc-ghost {
  -webkit-text-stroke-color: rgba(224, 35, 26, 0.24);
}

.svc-inner {
  position: relative;
  z-index: 1;
}

.svc-num {
  font-size: 0.8125rem;
  font-weight: 400;
  letter-spacing: 0.06em;
  color: var(--gris-clair);
  transition: color 0.3s ease;
}

.svc-row:hover .svc-num {
  color: var(--rouge);
}

.svc-row h3 {
  font-size: clamp(1.875rem, 5vw, 3.75rem);
  font-weight: 300;
  letter-spacing: -0.02em;
  line-height: 1.02;
  margin: 0.85rem 0 1.1rem;
}

.svc-row .desc {
  font-size: clamp(1.0625rem, 1.7vw, 1.3125rem);
  font-weight: 300;
  color: var(--gris-moyen);
  max-width: 64ch;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 1.5rem;
  list-style: none;
}

.tags li {
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: 1px solid var(--filet);
  padding: 7px 15px;
  color: var(--gris-moyen);
  transition: all 0.25s ease;
}

.svc-row:hover .tags li {
  border-color: var(--noir);
  color: var(--noir);
}

/* ------------------------------------------------------------
   Intégrations et specs (page Technique)
   ------------------------------------------------------------ */
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  list-style: none;
  margin-top: 2rem;
}

.chips li {
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
  border: 1px solid var(--filet);
  padding: 11px 20px;
  transition: all 0.25s ease;
}

.chips li:hover {
  background: var(--noir);
  color: var(--creme);
}

.specs {
  border-top: 1px solid var(--filet);
  border-bottom: 1px solid var(--filet);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin-top: 3rem;
}

.spec {
  padding: clamp(2.25rem, 4vw, 3.5rem) 2rem;
  border-right: 1px solid var(--filet);
}

.spec:last-child {
  border-right: none;
}

.spec .v {
  font-size: clamp(2rem, 4.5vw, 3.5rem);
  font-weight: 200;
  line-height: 1;
  letter-spacing: -0.02em;
}

.spec .v em {
  color: var(--rouge);
  font-style: normal;
}

.spec .k {
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gris-clair);
  margin-top: 0.85rem;
}

@media (max-width: 760px) {
  .specs {
    grid-template-columns: 1fr 1fr;
  }

  .spec:nth-child(2) {
    border-right: none;
  }

  .spec {
    border-bottom: 1px solid var(--filet);
  }
}

/* ------------------------------------------------------------
   Bouton premium — le rouge glisse au survol
   ------------------------------------------------------------ */
.btn-premium {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 14px;
  font-size: 0.8125rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 500;
  color: var(--creme);
  padding: 19px 30px;
  overflow: hidden;
  isolation: isolate;
  background: var(--noir);
  transition: color 0.35s ease;
}

.btn-premium::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: var(--rouge);
  transform: translateX(-101%);
  transition: transform 0.4s cubic-bezier(0.5, 0.1, 0.1, 1);
}

.btn-premium:hover::before {
  transform: translateX(0);
}

.btn-premium .arrow {
  display: inline-flex;
  transition: transform 0.35s ease;
}

.btn-premium:hover .arrow {
  transform: translateX(6px);
}

.btn-premium .pdot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--rouge);
  transition: background 0.35s ease;
}

.btn-premium:hover .pdot {
  background: var(--creme);
}

.btn-premium:focus-visible {
  outline: 2px solid var(--rouge);
  outline-offset: 3px;
}

.meta-note {
  margin-top: 1.1rem;
  font-size: 0.8125rem;
  color: var(--gris-clair);
}

/* ------------------------------------------------------------
   Séquence de départ — les feux s'éteignent, la course part
   ------------------------------------------------------------ */
.depart-overlay {
  position: fixed;
  inset: 0;
  background: #0a0a0a;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  transition: opacity 0.5s ease;
}

.depart-overlay i {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: #262624;
  transition: background 0.15s ease, box-shadow 0.15s ease;
}

.depart-overlay i.on {
  background: var(--rouge);
  box-shadow: 0 0 26px rgba(224, 35, 26, 0.7);
}

/* ------------------------------------------------------------
   Trainée de freinage derrière le curseur
   ------------------------------------------------------------ */
.trail-dot {
  position: fixed;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--rouge);
  opacity: 0.45;
  pointer-events: none;
  z-index: 9998;
  transform: translate(-50%, -50%);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

/* ------------------------------------------------------------
   Compteur de tours dans la marge
   ------------------------------------------------------------ */
.lap-counter {
  position: fixed;
  left: 16px;
  bottom: 18px;
  font-size: 0.5625rem;
  font-weight: 500;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--gris-clair);
  z-index: 150;
  pointer-events: none;
}

@media (max-width: 900px) {
  .lap-counter {
    display: none;
  }
}

/* ------------------------------------------------------------
   Navigation entre secteurs
   ------------------------------------------------------------ */
.sector-pager {
  border-top: 1px solid var(--filet);
  padding: 2rem 0;
}

.sector-pager .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.sector-pager a {
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--gris-moyen);
  transition: color 0.2s ease;
}

.sector-pager a:hover {
  color: var(--noir);
}

/* ------------------------------------------------------------
   Course de nuit — le site passe au noir
   ------------------------------------------------------------ */
body.nuit {
  --creme: #121211;
  --noir: #f4f3ee;
  --gris-moyen: #a5a49e;
  --gris-clair: #6f6f6b;
  --filet: #262624;
}

body.nuit .site-header {
  background: rgba(18, 18, 17, 0.94);
}

body.nuit .panel-noir,
body.nuit .track-panel {
  background: #1a1a19;
}

body.nuit .panel-noir .credo,
body.nuit .panel-noir h2 {
  color: #f4f3ee;
}

body.nuit .panel-rouge,
body.nuit .panel-rouge h2 {
  color: #f4f3ee;
}

body.nuit .btn-creme {
  background: #f4f3ee;
  color: #121211;
  border-color: #f4f3ee;
}

body.nuit .btn-premium {
  color: #f4f3ee;
}

body.nuit .svc-ghost {
  -webkit-text-stroke-color: rgba(244, 243, 238, 0.12);
}

body.nuit .svc-row:hover .svc-ghost {
  -webkit-text-stroke-color: rgba(224, 35, 26, 0.3);
}

body.nuit .lights i {
  background: rgba(244, 243, 238, 0.14);
}

.theme-toggle {
  cursor: pointer;
  background: none;
  font-family: var(--font);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gris-moyen);
}

/* ------------------------------------------------------------
   Page 404 — sortie de piste
   ------------------------------------------------------------ */
.page-404 {
  min-height: 100vh;
  background: #0a0a0a;
  color: #f4f3ee;
  display: flex;
  align-items: center;
}

.page-404 .num {
  font-size: clamp(7rem, 24vw, 20rem);
  font-weight: 200;
  line-height: 0.9;
  letter-spacing: -0.04em;
  color: transparent;
  -webkit-text-stroke: 1.5px rgba(244, 243, 238, 0.7);
}

.page-404 .pastille {
  display: inline-block;
  width: 0.14em;
  height: 0.14em;
  border-radius: 50%;
  background: var(--rouge);
  margin-left: 0.06em;
}

.page-404 h1 {
  font-size: clamp(1.75rem, 4vw, 3rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  margin-top: 1.5rem;
}

.page-404 p {
  color: var(--gris-clair);
  margin-top: 1rem;
  max-width: 50ch;
}

/* ------------------------------------------------------------
   Animations d'apparition
   ------------------------------------------------------------ */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .marquee-inner,
  .track-dot,
  .lights i {
    animation: none;
  }

  .track-path {
    animation: none;
    stroke-dashoffset: 0;
  }

  html {
    scroll-behavior: auto;
  }
}