/* =========================================================================
   Charles Lienard & Associés — CLA SAS
   Transfer Pricing Economics
   ========================================================================= */

/* --- Tokens ------------------------------------------------------------ */

:root {
  /* Couleur. Le bleu vif descend du #000099 de l'ancien site. */
  --encre:      #0b1524;
  --marine:     #16305a;
  --marine-sur: #24467c;
  --acier:      #5c6b83; /* 4,6:1 sur --papier : les libellés mono font 11 px */
  --trait:      #c9d0da;
  --trait-fin:  #dde2e9;
  --papier:     #e9ecf1;
  --blanc:      #ffffff;
  --vif:        #1436d6;
  --vif-fonce:  #0e28a0;
  --vif-voile:  #e3e8fb;

  /* Type */
  --display: "Spectral", "Iowan Old Style", Georgia, serif;
  --sans: "Instrument Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --mono: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;

  /* Rythme */
  --shell: 1200px;
  --gouttiere: clamp(1.25rem, 4vw, 3rem);
  --pad-y: clamp(3.75rem, 8vw, 7rem);
  --rail: 10.5rem;
  --r: 3px;
}

/* --- Base -------------------------------------------------------------- */

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

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

body {
  margin: 0;
  background: var(--papier);
  color: var(--encre);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.65;
  font-feature-settings: "kern", "liga";
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 { margin: 0; font-weight: 600; }

h1, h2 {
  font-family: var(--display);
  letter-spacing: -0.025em;
  line-height: 1.06;
  color: var(--marine);
  text-wrap: balance;
}

h1 { font-size: clamp(2.4rem, 5.6vw, 4.1rem); }
h2 { font-size: clamp(1.75rem, 3.4vw, 2.7rem); }

h3 {
  font-family: var(--sans);
  font-size: 1.15rem;
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--marine);
}

p { margin: 0 0 1.1em; text-wrap: pretty; }
p:last-child { margin-bottom: 0; }

a { color: var(--vif); text-decoration-thickness: 1px; text-underline-offset: 0.18em; }
a:hover { color: var(--vif-fonce); }

img, svg { max-width: 100%; }

strong { font-weight: 600; }

:focus-visible {
  outline: 2px solid var(--vif);
  outline-offset: 3px;
  border-radius: 1px;
}

.saut-contenu {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--marine);
  color: var(--blanc);
  padding: 0.7rem 1.1rem;
  z-index: 100;
}
.saut-contenu:focus { left: 0.5rem; top: 0.5rem; }

/* --- Utilitaires ------------------------------------------------------- */

.shell {
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gouttiere);
}

.mono {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  font-weight: 500;
  color: var(--acier);
}

.chiffre {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}

.mesure { max-width: 62ch; }
.mesure-courte { max-width: 46ch; }

.plomb {
  font-size: clamp(1.1rem, 1.9vw, 1.3rem);
  line-height: 1.55;
  color: var(--marine-sur);
}

.section { padding-block: var(--pad-y); }
.section-sombre { background: var(--marine); color: #cdd7e8; }
.section-sombre h2, .section-sombre h3 { color: var(--blanc); }
.section-sombre .mono { color: #8ea3c4; }
.section-sombre a { color: #a9beea; }
.section-blanc { background: var(--blanc); }

/* --- Le filet-intervalle : motif de séparation ------------------------- */
/* Une hairline avec trois graduations Q1 / médiane / Q3. */

.filet {
  position: relative;
  height: 1px;
  background: var(--trait);
  margin: 0;
  border: 0;
}
.filet::before,
.filet::after {
  content: "";
  position: absolute;
  top: -3px;
  width: 1px;
  height: 7px;
  background: var(--trait);
}
.filet::before { left: 22%; }
.filet::after  { left: 61%; }

.filet-mediane {
  position: absolute;
  left: 38%;
  top: -5px;
  width: 1px;
  height: 11px;
  background: var(--vif);
}

.section-sombre .filet,
.section-sombre .filet::before,
.section-sombre .filet::after { background: #2b4a7d; }

/* --- En-tête ----------------------------------------------------------- */

.entete {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(233, 236, 241, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--trait-fin);
}

.entete-corps {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  min-height: 4.25rem;
}

.marque {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  text-decoration: none;
  color: var(--marine);
  line-height: 1.15;
}
.marque:hover { color: var(--marine); }
.marque-nom {
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.02rem;
  letter-spacing: -0.015em;
}
.marque-sous {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--acier);
}

.nav { display: flex; align-items: center; gap: clamp(1rem, 2.4vw, 2rem); }

.nav a {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--marine);
  text-decoration: none;
  padding-block: 0.35rem;
  border-bottom: 1px solid transparent;
}
.nav a:hover { border-bottom-color: var(--vif); color: var(--vif); }
.nav a[aria-current="page"] { border-bottom-color: var(--marine); }

.nav-bouton {
  display: none;
  background: none;
  border: 1px solid var(--trait);
  border-radius: var(--r);
  padding: 0.45rem 0.7rem;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--marine);
  cursor: pointer;
}

/* --- Boutons ----------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.85rem 1.4rem;
  border-radius: var(--r);
  font-size: 0.95rem;
  font-weight: 500;
  text-decoration: none;
  border: 1px solid transparent;
  transition: background-color 0.16s ease, border-color 0.16s ease, color 0.16s ease;
}

.btn-plein {
  background: var(--vif);
  color: var(--blanc);
}
.btn-plein:hover { background: var(--vif-fonce); color: var(--blanc); }

.btn-vide {
  border-color: var(--trait);
  color: var(--marine);
  background: transparent;
}
.btn-vide:hover { border-color: var(--marine); color: var(--marine); background: var(--blanc); }

.section-sombre .btn-vide { border-color: #385a94; color: #dce5f5; }
.section-sombre .btn-vide:hover { background: #1d3b6c; border-color: #6e8bc0; color: var(--blanc); }

.fleche { font-family: var(--mono); font-size: 0.85em; }

.actions { display: flex; flex-wrap: wrap; gap: 0.75rem; align-items: center; }

/* --- Hero -------------------------------------------------------------- */

.hero { padding-top: clamp(3rem, 6vw, 5.5rem); padding-bottom: var(--pad-y); }

.hero-eyebrow { margin-bottom: 1.75rem; }

.hero h1 { margin-bottom: 1.5rem; max-width: 19ch; }

.hero-plomb { max-width: 54ch; margin-bottom: 2.5rem; }

.hero-grille {
  display: grid;
  gap: clamp(2.5rem, 5vw, 4.5rem);
  align-items: start;
}

@media (min-width: 60rem) {
  .hero-grille { grid-template-columns: minmax(0, 1fr) minmax(0, 0.92fr); }
}

/* --- SIGNATURE : l'intervalle de pleine concurrence -------------------- */

.intervalle {
  margin: 0;
  background: var(--blanc);
  border: 1px solid var(--trait-fin);
  border-radius: var(--r);
  padding: clamp(1.4rem, 3vw, 2rem);
}

.intervalle-titre {
  display: block;
  margin-bottom: 0.35rem;
}

.intervalle-source {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--acier);
  margin-bottom: 2.75rem;
}

.piste {
  position: relative;
  height: 4.5rem;
  margin-bottom: 0.5rem;
}

/* moustaches : min → max */
.piste-moustache {
  position: absolute;
  top: 2.25rem;
  left: var(--min);
  right: calc(100% - var(--max));
  height: 1px;
  background: var(--trait);
  transform-origin: left center;
}

.piste-moustache::before,
.piste-moustache::after {
  content: "";
  position: absolute;
  top: -4px;
  width: 1px;
  height: 9px;
  background: var(--trait);
}
.piste-moustache::before { left: 0; }
.piste-moustache::after { right: 0; }

/* la boîte interquartile */
.piste-boite {
  position: absolute;
  top: 1.5rem;
  left: var(--q1);
  width: calc(var(--q3) - var(--q1));
  height: 1.5rem;
  background: var(--vif-voile);
  border: 1px solid #b9c5f0;
  border-radius: 2px;
  transform-origin: left center;
}

.piste-mediane {
  position: absolute;
  top: 1.25rem;
  left: var(--med);
  width: 2px;
  height: 2rem;
  background: var(--marine);
}

/* le point mesuré */
.piste-point {
  position: absolute;
  top: 2.25rem;
  left: var(--pt);
  width: 11px;
  height: 11px;
  margin-left: -5.5px;
  margin-top: -5.5px;
  background: var(--vif);
  border: 2px solid var(--blanc);
  border-radius: 50%;
  box-shadow: 0 0 0 1px var(--vif);
}

.piste-tige {
  position: absolute;
  top: 1.3rem;
  left: var(--pt);
  width: 1px;
  height: 0.95rem;
  background: var(--vif);
}

/* Étiquette ancrée à gauche du point : elle ne sort jamais de la carte,
   et aucun transform n'entre en conflit avec l'animation d'entrée. */
.piste-etiquette {
  position: absolute;
  top: 0;
  left: var(--pt);
  margin-left: -0.45rem;
  white-space: nowrap;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--vif);
  background: var(--blanc);
  padding-inline: 0.35rem;
}

/* graduations chiffrées sous la piste */
.graduations {
  position: relative;
  height: 2.6rem;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--trait-fin);
  padding-top: 0.6rem;
}

.graduations li {
  position: absolute;
  left: var(--x);
  transform: translateX(-50%);
  text-align: center;
  line-height: 1.25;
}

.graduations b {
  display: block;
  font-family: var(--mono);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--marine);
  font-variant-numeric: tabular-nums;
}

.graduations span {
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--acier);
}

.intervalle-note {
  margin-top: 1.4rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--trait-fin);
  font-size: 0.92rem;
  line-height: 1.55;
  color: var(--marine-sur);
}

/* Animation d'entrée : la piste se trace, puis le point tombe. */
@media (prefers-reduced-motion: no-preference) {
  .js .piste-moustache { transform: scaleX(0); animation: tracer 0.62s cubic-bezier(0.22, 1, 0.36, 1) 0.15s forwards; }
  .js .piste-boite     { transform: scaleX(0); animation: tracer 0.5s cubic-bezier(0.22, 1, 0.36, 1) 0.5s forwards; }
  .js .piste-mediane   { opacity: 0; animation: apparaitre 0.3s ease 0.86s forwards; }
  .js .piste-point,
  .js .piste-tige,
  .js .piste-etiquette { opacity: 0; animation: tomber 0.45s cubic-bezier(0.34, 1.4, 0.64, 1) 1.02s forwards; }
  .js .graduations li  { opacity: 0; animation: apparaitre 0.4s ease forwards; }
  .js .graduations li:nth-child(1) { animation-delay: 0.62s; }
  .js .graduations li:nth-child(2) { animation-delay: 0.7s; }
  .js .graduations li:nth-child(3) { animation-delay: 0.78s; }
  .js .graduations li:nth-child(4) { animation-delay: 0.86s; }
  .js .graduations li:nth-child(5) { animation-delay: 0.94s; }
}

/* Tant que la figure n'est pas à l'écran, l'animation est en pause. */
.intervalle.en-attente * { animation-play-state: paused !important; }

@keyframes tracer { to { transform: scaleX(1); } }
@keyframes apparaitre { to { opacity: 1; } }
@keyframes tomber { from { opacity: 0; transform: translateY(-7px); } to { opacity: 1; transform: translateY(0); } }

/* --- Rail de marge (références d'articles) ----------------------------- */

.rail {
  display: grid;
  gap: clamp(1.25rem, 3vw, 3rem);
}

/* Sans ceci, un enfant de grille prend la largeur de son contenu
   (min-width: auto) et le tableau des seuils élargit toute la page. */
.rail > *,
.portes > *,
.prestations > li,
.citations > li,
.coordonnees > li,
.pied-grille > *,
.etapes > li > *,
.publications > li > * { min-width: 0; }

@media (min-width: 56rem) {
  .rail { grid-template-columns: var(--rail) minmax(0, 1fr); }
}

.rail-marge { padding-top: 0.5rem; }
.rail-marge p { margin-bottom: 0.4rem; }

/* --- Les deux portes --------------------------------------------------- */

.portes {
  display: grid;
  gap: 1px;
  background: var(--trait-fin);
  border: 1px solid var(--trait-fin);
  border-radius: var(--r);
  overflow: hidden;
}

@media (min-width: 48rem) {
  .portes { grid-template-columns: 1fr 1fr; }
}

.porte {
  background: var(--blanc);
  padding: clamp(1.75rem, 3.5vw, 2.75rem);
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  transition: background-color 0.16s ease;
}
.porte:hover { background: #f6f8fc; color: inherit; }
.porte:hover .porte-lien { color: var(--vif-fonce); }

.porte h3 { font-size: 1.35rem; font-family: var(--display); letter-spacing: -0.02em; }
.porte p { font-size: 0.98rem; color: var(--marine-sur); }
.porte-lien {
  margin-top: auto;
  padding-top: 0.5rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--vif);
}

/* --- Listes de prestations -------------------------------------------- */

.prestations {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--trait-fin);
  border-block: 1px solid var(--trait-fin);
}

@media (min-width: 46rem) { .prestations { grid-template-columns: 1fr 1fr; } }
@media (min-width: 72rem) { .prestations { grid-template-columns: repeat(3, 1fr); } }

.prestations li {
  background: var(--papier);
  padding: 1.6rem clamp(1rem, 2vw, 1.6rem) 1.8rem;
}
.section-blanc .prestations li { background: var(--blanc); }

.prestations h3 { margin-bottom: 0.55rem; }
.prestations p { font-size: 0.94rem; color: var(--marine-sur); margin: 0; }
.prestations .mono { display: block; margin-bottom: 0.9rem; }

/* --- Étapes numérotées (vraie séquence) -------------------------------- */

.etapes { list-style: none; margin: 0; padding: 0; counter-reset: e; }

.etapes > li {
  counter-increment: e;
  display: grid;
  gap: 0.35rem 1.5rem;
  padding-block: 1.6rem;
  border-top: 1px solid var(--trait-fin);
}
.etapes > li:last-child { border-bottom: 1px solid var(--trait-fin); }

@media (min-width: 46rem) {
  .etapes > li { grid-template-columns: 3.5rem minmax(0, 1fr); }
}

.etapes > li::before {
  content: counter(e, decimal-leading-zero);
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--vif);
  padding-top: 0.28rem;
}

.etapes h3 { margin-bottom: 0.3rem; }
.etapes p { font-size: 0.97rem; color: var(--marine-sur); margin: 0; }

/* --- Tableau des seuils ------------------------------------------------ */

.tableau-enveloppe {
  max-width: 100%;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  border: 1px solid var(--trait-fin);
  border-radius: var(--r);
  background: var(--blanc);
}

table {
  width: 100%;
  min-width: 46rem;
  border-collapse: collapse;
  font-size: 0.94rem;
}

thead th {
  text-align: left;
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 500;
  color: var(--acier);
  padding: 1rem 1.2rem;
  border-bottom: 1px solid var(--trait);
  white-space: nowrap;
}

tbody td {
  padding: 1.1rem 1.2rem;
  border-bottom: 1px solid var(--trait-fin);
  vertical-align: top;
  color: var(--marine-sur);
}
tbody tr:last-child td { border-bottom: 0; }

tbody td:first-child { color: var(--marine); font-weight: 500; }

td .chiffre { color: var(--marine); font-size: 0.95rem; }
td .ref {
  display: block;
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--acier);
  margin-top: 0.2rem;
}

/* --- Citations --------------------------------------------------------- */

.citations {
  display: grid;
  gap: clamp(1.5rem, 3vw, 2.5rem);
  list-style: none;
  margin: 0;
  padding: 0;
}
@media (min-width: 52rem) { .citations { grid-template-columns: repeat(3, 1fr); } }

.citations blockquote {
  margin: 0;
  font-family: var(--display);
  font-size: 1.15rem;
  line-height: 1.45;
  letter-spacing: -0.012em;
}

.citations footer {
  margin-top: 0.9rem;
  padding-top: 0.9rem;
  border-top: 1px solid #2b4a7d;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: #8ea3c4;
  line-height: 1.5;
}

/* --- Bloc contact ------------------------------------------------------ */

.coordonnees {
  display: grid;
  gap: 1.75rem 2.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
@media (min-width: 46rem) { .coordonnees { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (min-width: 68rem) { .coordonnees { grid-template-columns: repeat(4, minmax(0, 1fr)); } }

.coordonnees .mono { display: block; margin-bottom: 0.45rem; }
.coordonnees a, .coordonnees p { font-size: 1.02rem; }
.coordonnees a { text-decoration: none; border-bottom: 1px solid currentColor; }

/* --- Pied de page ------------------------------------------------------ */

.pied {
  background: var(--encre);
  color: #93a3bd;
  padding-block: clamp(2.5rem, 5vw, 4rem) 2rem;
  font-size: 0.9rem;
}

.pied-grille {
  display: grid;
  gap: 2rem;
  padding-bottom: 2.25rem;
  border-bottom: 1px solid #22334d;
}
@media (min-width: 52rem) { .pied-grille { grid-template-columns: 1.4fr 1fr 1fr; } }

.pied h4 {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  font-weight: 500;
  color: #7a8ca9;
  margin-bottom: 0.9rem;
}

.pied a { color: #c3cee1; text-decoration: none; }
.pied a:hover { color: var(--blanc); text-decoration: underline; }

.pied ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.5rem; }

.pied-nom {
  font-family: var(--display);
  font-size: 1.15rem;
  color: var(--blanc);
  letter-spacing: -0.015em;
  margin-bottom: 0.5rem;
}

.pied-bas {
  padding-top: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.5rem;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  color: #7a8ca9;
}

/* --- Divers ------------------------------------------------------------ */

.bloc + .bloc { margin-top: clamp(2.5rem, 5vw, 4rem); }

.titre-section { margin-bottom: 1.4rem; }
.titre-section + .plomb { margin-bottom: 2.75rem; }

.liste-simple { margin: 0; padding-left: 1.1rem; display: grid; gap: 0.6rem; }
.liste-simple li { color: var(--marine-sur); }
.liste-simple li::marker { color: var(--vif); }

.encadre {
  background: var(--blanc);
  border: 1px solid var(--trait-fin);
  border-left: 2px solid var(--vif);
  border-radius: var(--r);
  padding: clamp(1.3rem, 2.5vw, 1.9rem);
}
.section-blanc .encadre { background: var(--papier); border-color: var(--trait-fin); border-left-color: var(--vif); }

.pave-final { display: grid; gap: 1.75rem; }

/* --- Publications ------------------------------------------------------ */

.publications { list-style: none; margin: 0; padding: 0; }

.publications > li {
  display: grid;
  gap: 0.4rem 1.5rem;
  padding-block: 1.6rem;
  border-top: 1px solid var(--trait-fin);
}
.publications > li:last-child { border-bottom: 1px solid var(--trait-fin); }

@media (min-width: 46rem) {
  .publications > li { grid-template-columns: 3.5rem minmax(0, 1fr); }
}

.publications-annee {
  font-size: 0.82rem;
  color: var(--vif);
  padding-top: 0.3rem;
}

.publications h3 { margin-bottom: 0.35rem; font-weight: 500; }
.publications i { font-style: italic; }
.publications p { font-size: 0.95rem; color: var(--marine-sur); margin: 0; }

/* --- Champs à compléter dans les mentions légales ---------------------- */

mark {
  background: #fff2c4;
  color: var(--encre);
  padding: 0.05em 0.35em;
  border-radius: 2px;
  font-family: var(--mono);
  font-size: 0.85em;
}

/* --- Nav mobile -------------------------------------------------------- */

@media (max-width: 47.99rem) {
  .nav-bouton { display: block; }
  .nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--blanc);
    border-bottom: 1px solid var(--trait);
    padding: 0.5rem var(--gouttiere) 1rem;
  }
  .nav[data-ouvert="true"] { display: flex; }
  .nav a { padding-block: 0.8rem; border-bottom: 1px solid var(--trait-fin); }
  .nav a:last-child { border-bottom: 0; }
  .entete-corps { position: relative; }
}

@media print {
  .entete, .pied, .actions { display: none; }
  body { background: #fff; }
}