/* ==========================================================================
   IROKO INNOV — Composants : en-tête, boutons, cartes, formulaires, pied
   ========================================================================== */

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

.iroko-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 200;
  transition: transform .5s var(--ease), background .4s ease, box-shadow .4s ease;
}

.iroko-header::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(247, 243, 235, .82);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  border-bottom: 1px solid var(--line);
  opacity: 0;
  transition: opacity .4s ease;
}

.iroko-header.is-stuck::before { opacity: 1; }
.iroko-header.is-hidden { transform: translateY(-100%); }

.header-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  min-height: 84px;
  padding-block: 1rem;
}

.brand { position: relative; display: inline-flex; align-items: center; z-index: 2; }
.brand img { width: 128px; transition: opacity .35s ease; }
.brand__white { position: absolute; inset: 0; opacity: 0; }

/* En-tête posé sur un héros sombre */
.iroko-header--over-dark:not(.is-stuck) .brand__color { opacity: 0; }
.iroko-header--over-dark:not(.is-stuck) .brand__white { opacity: 1; }
.iroko-header--over-dark:not(.is-stuck) .nav-link,
.iroko-header--over-dark:not(.is-stuck) .nav-toggle { color: var(--bone); }
.iroko-header--over-dark:not(.is-stuck) .btn--ghost {
  color: var(--bone);
  border-color: rgba(247, 243, 235, .35);
}

.primary-nav { display: flex; align-items: center; gap: clamp(1.25rem, 2.5vw, 2.25rem); }

.nav-link {
  position: relative;
  font-size: .8125rem;
  font-weight: 600;
  letter-spacing: .13em;
  text-transform: uppercase;
  padding-block: .4rem;
  transition: color .3s ease;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--terra);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform .45s var(--ease);
}

.nav-link:hover::after,
.nav-link[aria-current="page"]::after { transform: scaleX(1); transform-origin: left; }
.nav-link[aria-current="page"] { color: var(--terra); }

.header-cta { display: flex; align-items: center; gap: 1rem; }

/* CTA affiché uniquement dans le menu mobile */
.primary-nav .nav-cta-mobile { display: none; }

.nav-toggle {
  display: none;
  align-items: center;
  gap: .6rem;
  background: none;
  border: 0;
  cursor: pointer;
  padding: .5rem;
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  z-index: 2;
}

.nav-toggle__bars { display: grid; gap: 5px; width: 22px; }
.nav-toggle__bars span {
  height: 1.5px;
  background: currentColor;
  transition: transform .4s var(--ease), opacity .3s ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

@media (max-width: 1024px) {
  .nav-toggle { display: inline-flex; }
  .header-cta .btn { display: none; }

  .primary-nav {
    position: fixed;
    inset: 0;
    flex-direction: column;
    justify-content: center;
    gap: .25rem;
    background: var(--ink);
    padding: 6rem var(--gutter) 3rem;
    clip-path: circle(0% at calc(100% - 3rem) 3rem);
    transition: clip-path .75s var(--ease);
    pointer-events: none;
  }

  .primary-nav.is-open { clip-path: circle(150% at calc(100% - 3rem) 3rem); pointer-events: auto; }

  .primary-nav .nav-link {
    font-family: var(--font-display);
    font-size: clamp(1.55rem, 6.2vw, 2.35rem);
    font-weight: 400;
    letter-spacing: -.02em;
    text-transform: none;
    color: var(--bone);
    padding-block: .4rem;
    opacity: 0;
    transform: translateY(22px);
    transition: opacity .5s var(--ease), transform .5s var(--ease);
  }

  .primary-nav.is-open .nav-link { opacity: 1; transform: none; transition-delay: calc(var(--i, 0) * 70ms + 180ms); }
  .primary-nav .nav-link::after { background: var(--terra-2); }

  .primary-nav .nav-cta-mobile {
    display: inline-flex;
    margin-top: 2.5rem;
    opacity: 0;
    transform: translateY(22px);
    transition: opacity .5s var(--ease), transform .5s var(--ease);
  }

  .primary-nav.is-open .nav-cta-mobile {
    opacity: 1;
    transform: none;
    transition-delay: calc(var(--i, 0) * 70ms + 180ms);
  }
}

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

.btn {
  --btn-bg: var(--terra);
  --btn-fg: #fff;
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .7rem;
  padding: 1.05rem 1.9rem;
  background: var(--btn-bg);
  color: var(--btn-fg);
  border: 1px solid var(--btn-bg);
  border-radius: 100px;
  font-size: .8125rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  cursor: pointer;
  overflow: hidden;
  isolation: isolate;
  transition: color .4s var(--ease), border-color .4s ease, transform .4s var(--ease);
}

.btn::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: var(--ink);
  transform: translateY(101%);
  transition: transform .55s var(--ease);
}

.btn:hover { color: #fff; transform: translateY(-2px); }
.btn:hover::before { transform: none; }

.btn--ghost {
  --btn-bg: transparent;
  --btn-fg: var(--text);
  border-color: var(--line);
}

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

.btn--light {
  --btn-bg: var(--bone);
  --btn-fg: var(--ink);
}

.btn--light::before { background: var(--terra); }

.btn--outline-light {
  --btn-bg: transparent;
  --btn-fg: var(--bone);
  border-color: rgba(247, 243, 235, .35);
}

.btn--outline-light::before { background: var(--bone); }
.btn--outline-light:hover { color: var(--ink); border-color: var(--bone); }

.btn__arrow { transition: transform .45s var(--ease); }
.btn:hover .btn__arrow { transform: translateX(4px); }

/* Lien fléché */
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  font-size: .8125rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--terra);
}

.link-arrow svg { transition: transform .45s var(--ease); }
.link-arrow:hover svg { transform: translateX(5px); }

/* --------------------------------------------------------------------------
   Cartes
   -------------------------------------------------------------------------- */

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: clamp(1.75rem, 3vw, 2.5rem);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform .55s var(--ease), box-shadow .55s var(--ease), border-color .4s ease;
}

.card::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 2px;
  background: linear-gradient(90deg, var(--terra), var(--leaf));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .6s var(--ease);
}

.card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.card:hover::after { transform: scaleX(1); }

.card__num {
  font-family: var(--font-display);
  font-size: .95rem;
  letter-spacing: .12em;
  color: var(--terra);
}

.card__icon {
  width: 52px; height: 52px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--terra-soft);
  color: var(--terra);
  margin-bottom: .35rem;
}

.card p { color: var(--text-muted); font-size: var(--fs-small); }

.card__list { display: grid; gap: .55rem; margin-top: .35rem; }

.card__list li {
  position: relative;
  padding-left: 1.4rem;
  font-size: var(--fs-small);
  color: var(--text-muted);
}

.card__list li::before {
  content: "";
  position: absolute;
  left: 0; top: .62em;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--leaf);
}

/* Carte sur fond sombre */
.section--dark .card {
  background: rgba(247, 243, 235, .04);
  border-color: var(--line-invert);
  color: var(--text-invert);
}

.section--dark .card p,
.section--dark .card__list li { color: rgba(247, 243, 235, .66); }
.section--dark .card:hover { background: rgba(247, 243, 235, .07); }
.section--dark .card__icon { background: rgba(224, 118, 59, .16); color: var(--terra-2); }

/* --------------------------------------------------------------------------
   Média
   -------------------------------------------------------------------------- */

.media {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: var(--bone-3);
}

.media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 1.2s var(--ease);
}

.media--tall { aspect-ratio: 3 / 4; }
.media--square { aspect-ratio: 1 / 1; }
.media--wide { aspect-ratio: 16 / 10; }
.media:hover img { transform: scale(1.04); }

.media__tag {
  position: absolute;
  left: 1.25rem; bottom: 1.25rem;
  padding: .55rem 1.1rem;
  border-radius: 100px;
  background: rgba(11, 22, 16, .72);
  backdrop-filter: blur(10px);
  color: var(--bone);
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
}

/* --------------------------------------------------------------------------
   Bandeau défilant
   -------------------------------------------------------------------------- */

.marquee {
  display: flex;
  overflow: hidden;
  border-block: 1px solid var(--line-invert);
  padding-block: 1.35rem;
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}

.marquee__track {
  display: flex;
  align-items: center;
  gap: 3.5rem;
  flex-shrink: 0;
  padding-right: 3.5rem;
  animation: marquee 38s linear infinite;
}

.marquee:hover .marquee__track { animation-play-state: paused; }

.marquee__item {
  display: inline-flex;
  align-items: center;
  gap: 1rem;
  font-family: var(--font-display);
  font-size: clamp(1rem, 1.5vw, 1.35rem);
  white-space: nowrap;
  color: rgba(247, 243, 235, .78);
}

.marquee__item::after {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--terra-2);
}

@keyframes marquee {
  to { transform: translateX(-100%); }
}

/* --------------------------------------------------------------------------
   Accordéon
   -------------------------------------------------------------------------- */

.accordion { border-top: 1px solid var(--line); }
.accordion__item { border-bottom: 1px solid var(--line); }

.accordion__trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  width: 100%;
  padding: 1.6rem 0;
  background: none;
  border: 0;
  text-align: left;
  cursor: pointer;
  font-family: var(--font-display);
  font-size: clamp(1rem, 1.4vw, 1.22rem);
  transition: color .3s ease;
}

.accordion__trigger:hover { color: var(--terra); }

.accordion__sign {
  position: relative;
  flex-shrink: 0;
  width: 34px; height: 34px;
  border: 1px solid var(--line);
  border-radius: 50%;
  transition: background .4s ease, border-color .4s ease;
}

.accordion__sign::before,
.accordion__sign::after {
  content: "";
  position: absolute;
  inset: 50% auto auto 50%;
  width: 12px; height: 1.5px;
  background: currentColor;
  transform: translate(-50%, -50%);
  transition: transform .45s var(--ease), opacity .3s ease;
}

.accordion__sign::after { transform: translate(-50%, -50%) rotate(90deg); }
.accordion__trigger[aria-expanded="true"] .accordion__sign::after { transform: translate(-50%, -50%) rotate(0); opacity: 0; }
.accordion__trigger[aria-expanded="true"] .accordion__sign { background: var(--terra); border-color: var(--terra); color: #fff; }

.accordion__panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows .6s var(--ease);
}

.accordion__panel[data-open="true"] { grid-template-rows: 1fr; }
.accordion__panel > div { overflow: hidden; }
.accordion__panel p { padding-bottom: 1.75rem; max-width: 52rem; color: var(--text-muted); }

/* --------------------------------------------------------------------------
   Formulaire
   -------------------------------------------------------------------------- */

.form { display: grid; gap: 1.5rem; }
.form__row { display: grid; gap: 1.5rem; grid-template-columns: repeat(2, 1fr); }

@media (max-width: 640px) { .form__row { grid-template-columns: 1fr; } }

.field { display: grid; gap: .5rem; }

.field label {
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .13em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.field input,
.field textarea,
.field select {
  width: 100%;
  padding: .95rem 0;
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--line);
  border-radius: 0;
  transition: border-color .35s ease;
}

.field textarea { resize: vertical; min-height: 130px; }
.field input:focus,
.field textarea:focus,
.field select:focus { outline: none; border-bottom-color: var(--terra); }
.field input::placeholder,
.field textarea::placeholder { color: rgba(94, 110, 100, .55); }
.field input[aria-invalid="true"],
.field textarea[aria-invalid="true"] { border-bottom-color: #B3261E; }

.field__error {
  font-size: .8125rem;
  color: #B3261E;
}

.form__status {
  padding: 1rem 1.25rem;
  border-radius: var(--radius);
  background: rgba(46, 158, 85, .12);
  border: 1px solid rgba(46, 158, 85, .35);
  font-size: var(--fs-small);
}

.form__status[hidden] { display: none; }

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

.iroko-footer {
  background: var(--ink);
  color: var(--text-invert);
  padding-top: clamp(4rem, 8vw, 6.5rem);
  position: relative;
  overflow: hidden;
}

.iroko-footer::before {
  content: "";
  position: absolute;
  inset: auto -10% -45% auto;
  width: 60vw; height: 60vw;
  background: radial-gradient(circle, rgba(198, 85, 31, .18), transparent 62%);
  pointer-events: none;
}

.footer-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.6fr repeat(3, 1fr);
  gap: clamp(2rem, 4vw, 3.5rem);
  padding-bottom: clamp(3rem, 6vw, 4.5rem);
}

@media (max-width: 960px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .footer-grid { grid-template-columns: 1fr; } }

.footer-grid h4 {
  font-family: var(--font-sans);
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: rgba(247, 243, 235, .5);
  margin-bottom: 1.35rem;
}

.footer-list { display: grid; gap: .8rem; }

.footer-list a,
.footer-list li {
  font-size: var(--fs-small);
  color: rgba(247, 243, 235, .72);
  transition: color .3s ease;
}

.footer-list a:hover { color: var(--terra-2); }
.footer-brand img { width: 140px; margin-bottom: 1.5rem; }
.footer-brand p { color: rgba(247, 243, 235, .66); font-size: var(--fs-small); max-width: 34ch; }

.socials { display: flex; gap: .6rem; margin-top: 1.75rem; }

.socials a {
  display: grid;
  place-items: center;
  width: 42px; height: 42px;
  border: 1px solid var(--line-invert);
  border-radius: 50%;
  color: rgba(247, 243, 235, .8);
  transition: background .35s ease, color .35s ease, border-color .35s ease, transform .35s var(--ease);
}

.socials a:hover { background: var(--terra); border-color: var(--terra); color: #fff; transform: translateY(-3px); }

/* Variante posée sur fond clair */
.socials--onlight a { border-color: var(--line); color: var(--text); }
.socials--onlight a:hover { color: #fff; }

.footer-bottom {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 1.75rem;
  border-top: 1px solid var(--line-invert);
  font-size: .8125rem;
  color: rgba(247, 243, 235, .5);
}

.footer-bottom nav { display: flex; gap: 1.5rem; }
.footer-bottom a:hover { color: var(--bone); }

/* Bouton retour en haut */
.to-top {
  position: fixed;
  right: clamp(1rem, 3vw, 2rem);
  bottom: clamp(1rem, 3vw, 2rem);
  z-index: 180;
  width: 50px; height: 50px;
  display: grid;
  place-items: center;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: var(--ink);
  color: var(--bone);
  cursor: pointer;
  opacity: 0;
  transform: translateY(14px) scale(.9);
  pointer-events: none;
  transition: opacity .4s ease, transform .5s var(--ease), background .3s ease;
}

.to-top.is-visible { opacity: 1; transform: none; pointer-events: auto; }
.to-top:hover { background: var(--terra); }

/* --------------------------------------------------------------------------
   Variantes sur fond sombre / sur image
   -------------------------------------------------------------------------- */

.section--dark .accordion,
.section--dark .accordion__item { border-color: var(--line-invert); }
.section--dark .accordion__sign { border-color: var(--line-invert); }
.section--dark .accordion__trigger:hover { color: var(--terra-2); }
.section--dark .accordion__panel p { color: rgba(247, 243, 235, .7); }

.section--dark .refs { background: var(--line-invert); border-color: var(--line-invert); }
.section--dark .refs div { background: rgba(11, 22, 16, .55); color: var(--text-invert); }
.section--dark .refs div:hover { background: var(--terra); color: #fff; }

/* Les cartes posées sur une photo ont besoin d'un fond plus opaque */
.section--bg .card {
  background: rgba(11, 22, 16, .52);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.section--bg .card:hover { background: rgba(11, 22, 16, .68); }

/* --------------------------------------------------------------------------
   Cartes accentuées — une couleur par pôle d'expertise
   -------------------------------------------------------------------------- */

.card--c1, .card--c2, .card--c3, .card--c4 {
  --soft-a: .1;
  --line-a: .28;
  --accent: rgb(var(--accent-rgb));
  --accent-soft: rgb(var(--accent-rgb) / var(--soft-a));
  --accent-line: rgb(var(--accent-rgb) / var(--line-a));
  --accent-ink: var(--accent);
  background:
    linear-gradient(158deg, var(--accent-soft) 0%, rgba(255, 255, 255, 0) 58%),
    var(--card-base, var(--surface));
}

.card--c1 { --accent-rgb: 198 85 31;  --accent-ink-light: #E0763B; }
.card--c2 { --accent-rgb: 46 158 85;  --accent-ink-light: #5CC888; }
.card--c3 { --accent-rgb: 28 122 150; --accent-ink-light: #5FBBD6; }
.card--c4 { --accent-rgb: 176 117 32; --accent-ink-light: #E0B057; }

.card--c1::after, .card--c2::after, .card--c3::after, .card--c4::after {
  background: var(--accent);
  height: 3px;
}

.card--c1::before, .card--c2::before, .card--c3::before, .card--c4::before {
  background: radial-gradient(130% 100% at 0% 0%, var(--accent-soft), transparent 64%);
}

.card--c1 .card__icon, .card--c2 .card__icon,
.card--c3 .card__icon, .card--c4 .card__icon {
  background: var(--accent-soft);
  color: var(--accent-ink);
  box-shadow: inset 0 0 0 1px var(--accent-line);
}

.card--c1:hover .card__icon, .card--c2:hover .card__icon,
.card--c3:hover .card__icon, .card--c4:hover .card__icon {
  background: var(--accent);
  color: #fff;
  box-shadow: none;
}

.card--c1 .card__list li::before, .card--c2 .card__list li::before,
.card--c3 .card__list li::before, .card--c4 .card__list li::before {
  background: var(--accent-ink);
}

.card--c1:hover, .card--c2:hover, .card--c3:hover, .card--c4:hover {
  border-color: var(--accent-line);
}

/* Posées sur un fond sombre : base transparente, teinte plus marquée,
   et un accent éclairci pour rester lisible. */
.section--dark .card--c1, .section--dark .card--c2,
.section--dark .card--c3, .section--dark .card--c4 {
  --soft-a: .2;
  --line-a: .4;
  --accent-ink: var(--accent-ink-light);
  --card-base: rgba(247, 243, 235, .05);
  background:
    linear-gradient(158deg, var(--accent-soft) 0%, rgba(255, 255, 255, 0) 58%),
    var(--card-base);
}

.section--bg .card--c1, .section--bg .card--c2,
.section--bg .card--c3, .section--bg .card--c4 {
  --card-base: rgba(11, 22, 16, .55);
  background:
    linear-gradient(158deg, var(--accent-soft) 0%, rgba(255, 255, 255, 0) 58%),
    var(--card-base);
}

.section--dark .card--c1:hover, .section--dark .card--c2:hover,
.section--dark .card--c3:hover, .section--dark .card--c4:hover {
  --card-base: rgba(247, 243, 235, .09);
}

.section--bg .card--c1:hover, .section--bg .card--c2:hover,
.section--bg .card--c3:hover, .section--bg .card--c4:hover {
  --card-base: rgba(11, 22, 16, .7);
}

/* Variante large : deux colonnes de cartes au lieu de quatre */
.card--wide {
  padding: clamp(1.9rem, 2.6vw, 2.6rem);
  gap: .85rem;
}

/* Le numéro devient un chiffre filigrane dans l'angle */
.card--wide .card__num {
  position: absolute;
  top: clamp(1rem, 1.8vw, 1.6rem);
  right: clamp(1.25rem, 2.2vw, 2rem);
  font-size: clamp(3rem, 5vw, 4.5rem);
  line-height: 1;
  letter-spacing: -.04em;
  color: var(--accent-ink);
  opacity: .18;
  pointer-events: none;
  transition: opacity .55s var(--ease), transform .55s var(--ease);
}

.card--wide:hover .card__num { opacity: .3; transform: translateY(-3px); }

.card--wide h3 { margin-top: .2rem; }
.card--wide p { max-width: 52ch; }

/* Les puces tiennent sur deux colonnes quand la carte est large */
.card--wide .card__list {
  margin-top: 1.1rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--line);
  grid-template-columns: repeat(2, minmax(0, 1fr));
  column-gap: 1.25rem;
}

.section--dark .card--wide .card__list { border-top-color: var(--line-invert); }

@media (max-width: 560px) {
  .card--wide .card__list { grid-template-columns: 1fr; }
}