/* =========================================================
   NOS EXPERTISES — Refonte premium
   ========================================================= */

/* VARIABLES LOCALES */
:root {
  --expertises-bg: #ffffff;
  --expertises-surface: rgba(0, 0, 15, 0.025);
  --expertises-border: rgba(0, 0, 15, 0.1);
  --expertises-text: #00000F;
  --expertises-muted: rgba(0, 0, 15, 0.55);
}

body {
  background-color: var(--expertises-bg) !important;
  color: var(--expertises-text);
}

/* HERO — clair avec accents dynamiques */
.expertises-hero {
  position: relative;
  width: 100%;
  height: 100vh;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--expertises-bg);
  padding: 140px 80px 100px;
  overflow: hidden;
}

.expertises-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 30%, rgba(0, 0, 15, 0.04) 0%, transparent 45%),
    radial-gradient(circle at 80% 70%, rgba(0, 0, 15, 0.03) 0%, transparent 40%);
  pointer-events: none;
  z-index: 0;
}

.expertises-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 0, 15, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 0, 15, 0.04) 1px, transparent 1px);
  background-size: 80px 80px;
  pointer-events: none;
  z-index: 0;
  mask-image: radial-gradient(circle at center, black 0%, transparent 75%);
  -webkit-mask-image: radial-gradient(circle at center, black 0%, transparent 75%);
}

.expertises-hero__inner {
  position: relative;
  max-width: 1200px;
  width: 100%;
  z-index: 1;
}

.expertises-hero__label {
  font-family: "Space Grotesk", sans-serif;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 40px;
  display: inline-block;
  border: 1px solid var(--accent);
  padding: 8px 14px;
}

.expertises-hero__title {
  font-family: "Space Grotesk", sans-serif;
  font-size: clamp(52px, 7vw, 110px);
  font-weight: 500;
  line-height: 1.05;
  letter-spacing: -0.04em;
  color: var(--expertises-text);
  margin: 0 0 40px;
}

.expertises-hero__line {
  display: block;
}

.expertises-hero__accent {
  color: var(--accent);
}

.expertises-hero__sub {
  font-family: "Space Grotesk", sans-serif;
  font-size: 16px;
  font-weight: 500;
  color: var(--expertises-muted);
  letter-spacing: 0.02em;
  max-width: 560px;
  line-height: 1.6;
  margin: 0 0 48px;
}

.expertises-hero__cta {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  font-family: "Space Grotesk", sans-serif;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-decoration: none;
  color: #ffffff;
  background: var(--expertises-text);
  padding: 18px 30px;
  position: relative;
  overflow: hidden;
  transition: color 0.35s ease;
}

.expertises-hero__cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--accent);
  transform: translateX(-101%);
  transition: transform 0.45s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 0;
}

.expertises-hero__cta:hover::before {
  transform: translateX(0);
}

.expertises-hero__cta:hover {
  color: var(--expertises-text);
}

.expertises-hero__cta span,
.expertises-hero__cta i {
  position: relative;
  z-index: 1;
}

.expertises-hero__cta i {
  transition: transform 0.3s ease;
}

.expertises-hero__cta:hover i {
  transform: translateX(5px);
}

.expertises-hero__scroll-btn {
  position: absolute;
  bottom: 48px;
  left: 50%;
  transform: translateX(-50%);
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 1.5px solid var(--expertises-border);
  background: transparent;
  color: var(--expertises-text);
  font-size: 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.3s ease, background 0.3s ease, color 0.3s ease;
  animation: expertises-bounce 2.2s ease-in-out infinite;
  z-index: 1;
}

.expertises-hero__scroll-btn:hover {
  border-color: var(--accent);
  background: var(--accent);
  color: #ffffff;
}

@keyframes expertises-bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(10px); }
}

/* TICKER TRANSITION */
.expertises-ticker {
  margin-top: -80px;
  margin-bottom: -40px;
  position: relative;
  z-index: 2;
  background-color: #00000F !important;
  padding: 24px 0;
}

.expertises-ticker .ticker-list li {
  color: #ffffff;
}

.expertises-ticker .ticker-sep {
  color: var(--accent);
}

.expertises-ticker--process {
  margin-top: -60px;
  margin-bottom: -50px;
}

/* EXPERTISES LIST */
.expertises-list {
  background: var(--expertises-bg);
  padding: 140px 80px 120px;
  border-top: none;
  position: relative;
  z-index: 1;
}

.expertises-list__header {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  margin-bottom: 80px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--expertises-border);
}

.expertises-list__label {
  font-family: "Space Grotesk", sans-serif;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--expertises-muted);
}

.expertises-list__title {
  font-family: "Space Grotesk", sans-serif;
  font-size: clamp(32px, 4vw, 56px);
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--expertises-text);
  margin: 0;
}

.expertises-list__count {
  font-family: "Space Grotesk", sans-serif;
  font-size: 80px;
  font-weight: 500;
  color: rgba(0, 0, 15, 0.06);
  line-height: 1;
}

.expertises-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.expertise-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 2.75rem 2.5rem 2.25rem;
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid rgba(0, 0, 15, 0.08);
  border-radius: 1.5rem;
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  backdrop-filter: blur(14px) saturate(140%);
  box-shadow:
    inset 0 1px rgba(255, 255, 255, 0.6),
    0 24px 48px -32px rgba(0, 0, 15, 0.18);
  overflow: hidden;
  isolation: isolate;
  transition: background-color 0.45s cubic-bezier(0.16, 1, 0.3, 1),
              border-color 0.45s cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 0.5s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.45s cubic-bezier(0.16, 1, 0.3, 1);
}

.expertise-card::before {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background: linear-gradient(rgba(255, 255, 255, 0.5) 0%, rgba(255, 255, 255, 0) 35%);
}

.expertise-card:hover {
  background: rgba(255, 255, 255, 0.82);
  border-color: rgba(0, 0, 15, 0.14);
  box-shadow:
    inset 0 1px rgba(255, 255, 255, 0.8),
    0 44px 90px -32px rgba(0, 0, 15, 0.25),
    0 0 0 1px rgba(0, 0, 15, 0.04);
  transform: translateY(-6px);
}

.expertise-card__accent-line {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.45s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 1;
}

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

.expertise-card__watermark {
  position: absolute;
  top: 0.75rem;
  right: 1rem;
  font-family: "Space Grotesk", sans-serif;
  font-size: 6rem;
  font-weight: 600;
  line-height: 1;
  color: rgba(0, 0, 15, 0.04);
  pointer-events: none;
  z-index: 0;
  user-select: none;
}

.expertise-card__head {
  position: relative;
  z-index: 1;
  margin-bottom: 1.75rem;
}

.expertise-card__icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 1px solid rgba(0, 0, 15, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: var(--accent);
  background: rgba(255, 255, 255, 0.4);
  transition: background 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

.expertise-card:hover .expertise-card__icon {
  background: var(--accent);
  border-color: var(--accent);
  color: #ffffff;
}

.expertise-card__body {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  flex: 1;
}

.expertise-card__title {
  font-family: "Space Grotesk", sans-serif;
  font-size: 32px;
  font-weight: 500;
  color: var(--expertises-text);
  line-height: 1.15;
  margin: 0;
}

.expertise-card__desc {
  font-family: "Space Grotesk", sans-serif;
  font-size: 15px;
  color: var(--expertises-muted);
  line-height: 1.6;
  margin: 0;
}

.expertise-card__divider {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 1px;
  background: rgba(0, 0, 15, 0.08);
  margin: 1.5rem 0 0.25rem;
}

.expertise-card__tags {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.expertise-card__tags li {
  font-family: "Space Grotesk", sans-serif;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--expertises-muted);
  border: 1px solid rgba(0, 0, 15, 0.08);
  padding: 5px 12px;
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.4);
}

.expertise-card__arrow {
  position: absolute;
  bottom: 1.5rem;
  right: 2rem;
  font-family: "Space Grotesk", sans-serif;
  font-size: 24px;
  font-weight: 300;
  color: var(--expertises-muted);
  transition: color 0.3s ease, transform 0.3s ease;
  z-index: 1;
  pointer-events: none;
}

.expertise-card:hover .expertise-card__arrow {
  color: var(--accent);
  transform: translateX(4px);
}

/* PROCESS — timeline verticale */
.expertises-process {
  background: var(--expertises-bg);
  padding: 140px 80px 160px;
  border-top: 1px solid var(--expertises-border);
}

.expertises-process__header {
  max-width: 800px;
  margin-bottom: 96px;
}

.expertises-process__label {
  font-family: "Space Grotesk", sans-serif;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  display: inline-block;
  border: 1px solid var(--accent);
  padding: 8px 14px;
  margin-bottom: 32px;
}

.expertises-process__title {
  font-family: "Space Grotesk", sans-serif;
  font-size: clamp(36px, 4.5vw, 72px);
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--expertises-text);
  margin: 0;
}

.process-timeline {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
}

.process-timeline::before {
  content: '';
  position: absolute;
  left: 23px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--accent);
  opacity: 0.35;
}

.process-step {
  position: relative;
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 40px;
  padding: 0 0 64px;
}

.process-step:last-child {
  padding-bottom: 0;
}

.process-step__marker {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--expertises-bg);
  border: 1px solid var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: "Space Grotesk", sans-serif;
  font-size: 13px;
  font-weight: 500;
  color: var(--accent);
  position: relative;
  z-index: 1;
  flex-shrink: 0;
}

.process-step__content {
  padding-top: 8px;
}

.process-step__title {
  font-family: "Space Grotesk", sans-serif;
  font-size: 28px;
  font-weight: 500;
  color: var(--expertises-text);
  margin: 0 0 14px;
  line-height: 1.2;
}

.process-step__desc {
  font-family: "Space Grotesk", sans-serif;
  font-size: 15px;
  color: var(--expertises-muted);
  line-height: 1.6;
  margin: 0;
  max-width: 560px;
}

/* CTA */
.expertises-cta {
  background: var(--expertises-bg);
  padding: 120px 80px 140px;
  border-top: none;
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.expertises-cta__inner {
  position: relative;
  max-width: 760px;
  z-index: 1;
  pointer-events: none;
}

.expertises-cta__btn {
  pointer-events: auto;
}

.expertises-cta__grid {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 2400px;
  height: 1600px;
  transform: translate(-50%, -50%) rotateX(-5deg) rotateY(-45deg) rotateZ(12deg);
  transform-style: preserve-3d;
  transform-origin: center center;
  z-index: 0;
  display: flex;
  flex-direction: column;
  pointer-events: auto;
}

.expertises-cta__row {
  display: flex;
  border-left: 1px solid rgba(0, 0, 15, 0.08);
  position: relative;
  transform-style: preserve-3d;
}

.expertises-cta__cell {
  width: 64px;
  height: 64px;
  flex-shrink: 0;
  border-right: 1px solid rgba(0, 0, 15, 0.08);
  border-top: 1px solid rgba(0, 0, 15, 0.08);
  position: relative;
  transform-style: preserve-3d;
  transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.expertises-cta__label,
.expertises-cta__title,
.expertises-cta__btn {
  position: relative;
  z-index: 1;
}

.expertises-cta__label {
  font-family: "Space Grotesk", sans-serif;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--expertises-muted);
  display: block;
  margin-bottom: 24px;
}

.expertises-cta__title {
  font-family: "Space Grotesk", sans-serif;
  font-size: clamp(36px, 5vw, 64px);
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--expertises-text);
  margin: 0 0 40px;
}

.expertises-cta__btn {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  font-family: "Space Grotesk", sans-serif;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-decoration: none;
  color: #ffffff;
  background: var(--expertises-text);
  padding: 18px 30px;
  position: relative;
  overflow: hidden;
  transition: color 0.35s ease;
}

.expertises-cta__btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--accent);
  transform: translateX(-101%);
  transition: transform 0.45s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 0;
}

.expertises-cta__btn:hover::before {
  transform: translateX(0);
}

.expertises-cta__btn:hover {
  color: var(--expertises-text);
}

.expertises-cta__btn span,
.expertises-cta__btn i {
  position: relative;
  z-index: 1;
}

.expertises-cta__btn i {
  transition: transform 0.3s ease;
}

.expertises-cta__btn:hover i {
  transform: translateX(5px);
}

/* REVEAL ANIMATIONS */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* RESPONSIVE */
@media (max-width: 1200px) {
  .expertises-grid {
    grid-template-columns: 1fr;
  }

  .expertise-card {
    padding: 40px 36px 36px;
  }

  .expertises-list__count {
    font-size: 64px;
  }
}

@media (max-width: 768px) {
  .expertises-hero {
    padding: 100px 24px 80px;
  }

  .expertises-list,
  .expertises-process,
  .expertises-cta {
    padding-left: 24px;
    padding-right: 24px;
  }

  .expertises-hero__title {
    font-size: clamp(36px, 11vw, 56px);
  }

  .expertises-hero__sub {
    font-size: 13px;
  }

  .expertises-hero__label {
    margin-bottom: 24px;
  }

  .expertises-hero__scroll-btn {
    bottom: 24px;
  }

  .expertises-list__header {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .expertises-list__count {
    font-size: 48px;
  }

  .expertise-card__title {
    font-size: 26px;
  }

  .process-step {
    gap: 24px;
  }

  .process-step__title {
    font-size: 24px;
  }
}