/* Section 8 — Des projets techniques confrontés à des contraintes réelles */

.sci-refs {
  --refs-bg: #eef1f5;
  --refs-ink: #1a2233;
  --refs-muted: #4a5668;
  --refs-indigo: #484f8a;
  --refs-orange: #f1894e;
  --refs-line: rgba(26, 34, 51, 0.14);
  position: relative;
  isolation: isolate;
  background:
    linear-gradient(180deg, #f4f6f9 0%, var(--refs-bg) 50%, #e8ecf2 100%);
  color: var(--refs-ink);
  /* padding-block = --sci-section-y via .sci-page :is(.sci-refs, ...) */
  overflow-x: clip;
}

.sci-refs__inner {
  width: 100%;
}

/* En-tête de section : titre | lead en bout de ligne */
.sci-refs__head {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(16rem, 0.9fr);
  gap: clamp(1.5rem, 3.5vw, 3rem);
  align-items: end;
  margin-bottom: clamp(3.25rem, 5.5vw, 4.75rem);
}

.sci-page .sci-refs__title {
  margin: 0;
  max-width: 18ch;
  font-family: var(--font-title);
  font-size: var(--fs-title);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.025em;
  color: var(--refs-ink);
}

.sci-page .sci-refs__lead {
  margin: 0;
  max-width: 36rem;
  justify-self: end;
  font-size: var(--fs-lead);
  font-weight: 500;
  line-height: 1.72;
  color: var(--refs-muted);
}

.sci-refs__missions {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.sci-refs__mission {
  min-width: 0;
  background: transparent;
  border: 0;
  border-radius: 0;
  overflow: visible;
}

/* En-tête de mission : repère + nom | description */
.sci-refs__mission-head {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(14rem, 0.95fr);
  gap: clamp(1.25rem, 3vw, 2.75rem);
  align-items: end;
  margin-bottom: 1.5rem;
}

.sci-refs__mission-id {
  min-width: 0;
}

.sci-refs__kicker {
  margin: 0 0 0.7rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--refs-indigo);
  line-height: 1.35;
}

.sci-page .sci-refs__name {
  margin: 0;
  max-width: none;
  font-family: var(--font-title);
  font-size: clamp(2.15rem, 3.2vw, 3.35rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--refs-ink);
  white-space: nowrap;
}

.sci-refs__mission-copy {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  align-items: flex-end;
  gap: 0.75rem;
  min-width: 0;
  justify-self: end;
  text-align: right;
  padding-bottom: 0.2rem;
}

.sci-refs__rule {
  display: block;
  width: 2.1rem;
  height: 2px;
  background: var(--refs-orange);
  border-radius: 999px;
}

.sci-page .sci-refs__desc {
  margin: 0;
  max-width: 28rem;
  font-size: clamp(1.02rem, 1.15vw, 1.15rem);
  font-weight: 500;
  line-height: 1.65;
  color: var(--refs-muted);
  text-align: right;
}

/* Photographie panoramique */
.sci-refs__media {
  position: relative;
  margin: 0;
  min-width: 0;
  background: transparent;
}

.sci-refs__frame {
  --refs-frame-radius: 1.15rem;
  position: relative;
  width: 100%;
  aspect-ratio: 3.4 / 1;
  border-radius: var(--refs-frame-radius);
  overflow: hidden;
  background: #d7dde6;
}

.sci-refs__frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: none;
}

.sci-refs__img--bombardier {
  object-position: 78% 48%;
}

.sci-refs__img--traftor {
  object-position: 80% 42%;
}

/* Sider liquid glass collé — large & premium */
.sci-refs__sider {
  --refs-sider-radius: var(--refs-frame-radius, 1.15rem);
  position: absolute;
  z-index: 2;
  inset: 0 auto 0 0;
  width: min(44rem, 62%);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.85rem;
  padding:
    clamp(1.75rem, 3.2vw, 2.65rem)
    clamp(2.25rem, 4vw, 3.5rem)
    clamp(1.75rem, 3.2vw, 2.65rem)
    clamp(1.75rem, 3vw, 2.5rem);
  border: 0;
  border-radius: var(--refs-sider-radius) 0 0 var(--refs-sider-radius);
  background:
    linear-gradient(
      100deg,
      rgba(8, 12, 24, 0.78) 0%,
      rgba(14, 20, 36, 0.62) 34%,
      rgba(22, 30, 52, 0.38) 62%,
      rgba(28, 36, 58, 0.14) 84%,
      transparent 100%
    ),
    linear-gradient(
      155deg,
      rgba(255, 255, 255, 0.28) 0%,
      rgba(255, 255, 255, 0.08) 28%,
      rgba(72, 79, 138, 0.16) 58%,
      transparent 100%
    );
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.28),
    inset 1px 0 0 rgba(255, 255, 255, 0.14),
    inset 0 -1px 0 rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(36px) saturate(1.85) brightness(1.05);
  -webkit-backdrop-filter: blur(36px) saturate(1.85) brightness(1.05);
  color: #f7f9fc;
  pointer-events: none;
  -webkit-mask-image: linear-gradient(90deg, #000 0%, #000 70%, rgba(0, 0, 0, 0.55) 86%, transparent 100%);
  mask-image: linear-gradient(90deg, #000 0%, #000 70%, rgba(0, 0, 0, 0.55) 86%, transparent 100%);
}

.sci-refs__sider::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background:
    radial-gradient(ellipse 80% 55% at 12% 18%, rgba(255, 255, 255, 0.22), transparent 55%),
    radial-gradient(ellipse 60% 50% at 30% 100%, rgba(241, 137, 78, 0.12), transparent 55%),
    linear-gradient(115deg, rgba(255, 255, 255, 0.16) 0%, transparent 45%);
  pointer-events: none;
}

.sci-refs__sider::after {
  content: "";
  position: absolute;
  left: 0;
  top: 14%;
  bottom: 14%;
  width: 3.5px;
  border-radius: 0 999px 999px 0;
  background: linear-gradient(
    180deg,
    transparent 0%,
    #ff9a5c 18%,
    var(--refs-orange) 50%,
    #ff9a5c 82%,
    transparent 100%
  );
  box-shadow:
    0 0 16px rgba(241, 137, 78, 0.45),
    0 0 28px rgba(241, 137, 78, 0.2);
  pointer-events: none;
}

.sci-refs__sider-label,
.sci-refs__sider-title,
.sci-refs__sider-text {
  position: relative;
  z-index: 1;
  margin: 0;
  max-width: 32rem;
}

.sci-refs__sider-label {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.74rem;
  font-weight: 750;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #ffb07a;
}

.sci-refs__sider-label::after {
  content: "";
  display: block;
  width: 2.4rem;
  height: 1px;
  background: linear-gradient(90deg, rgba(255, 176, 122, 0.9), transparent);
}

.sci-page .sci-refs__sider-title {
  font-family: var(--font-title);
  font-size: clamp(1.7rem, 2.35vw, 2.45rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: #fff;
  text-shadow: 0 2px 18px rgba(8, 12, 24, 0.4);
}

.sci-page .sci-refs__sider-text {
  max-width: 30rem;
  font-size: clamp(1.02rem, 1.2vw, 1.18rem);
  font-weight: 500;
  line-height: 1.68;
  color: rgba(238, 244, 252, 0.94);
  text-shadow: 0 1px 10px rgba(8, 12, 24, 0.32);
}

.sci-page .sci-refs__caption {
  margin: 0.7rem 0 0;
  font-size: 0.88rem;
  font-weight: 550;
  line-height: 1.45;
  color: var(--refs-muted);
}

.sci-refs__divider {
  height: clamp(3.5rem, 5.5vw, 4.5rem);
  margin: 0;
  position: relative;
}

.sci-refs__divider::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 1px;
  background: var(--refs-line);
  transform: translateY(-50%);
}

.sci-refs__footer {
  margin-top: clamp(1.75rem, 3vw, 2.5rem);
  padding-top: clamp(1.25rem, 2.2vw, 1.65rem);
  border-top: 1px solid var(--refs-line);
}

.sci-refs__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: 100%;
  min-height: 3rem;
  color: var(--refs-ink);
  font-size: clamp(1.02rem, 1.15vw, 1.15rem);
  font-weight: 700;
  text-decoration: none;
  transition: color 0.2s ease;
}

.sci-refs__link:hover {
  color: var(--refs-indigo);
}

.sci-refs__link:focus-visible {
  outline: 2px solid var(--refs-orange);
  outline-offset: 4px;
  border-radius: 0.25rem;
}

.sci-refs__arrow {
  flex: 0 0 auto;
  color: var(--refs-orange);
  font-size: 1.25rem;
  line-height: 1;
  transition: transform 0.2s ease;
}

.sci-refs__link:hover .sci-refs__arrow {
  transform: translateX(4px);
}

/* Animation : visible sans JS ; états masqués uniquement si .is-enhanced */
.sci-refs.is-enhanced [data-sci-refs-head],
.sci-refs.is-enhanced [data-sci-refs-mission-head],
.sci-refs.is-enhanced [data-sci-refs-footer] {
  opacity: 0;
  transform: translateY(12px);
  will-change: opacity, transform;
}

.sci-refs.is-enhanced [data-sci-refs-frame] {
  clip-path: inset(0 100% 0 0);
  will-change: clip-path;
}

.sci-refs.is-enhanced [data-sci-refs-head].is-revealed,
.sci-refs.is-enhanced [data-sci-refs-mission-head].is-revealed,
.sci-refs.is-enhanced [data-sci-refs-footer].is-revealed {
  opacity: 1;
  transform: none;
  will-change: auto;
}

.sci-refs.is-enhanced [data-sci-refs-frame].is-revealed {
  clip-path: inset(0 0 0 0);
  will-change: auto;
}

@media (max-width: 1100px) {
  .sci-page .sci-refs__name {
    white-space: normal;
  }

  .sci-refs__frame {
    aspect-ratio: 2.6 / 1;
  }
}

@media (max-width: 900px) {
  .sci-refs__head {
    grid-template-columns: 1fr;
    align-items: start;
    gap: 1rem;
    margin-bottom: 2rem;
  }

  .sci-page .sci-refs__title {
    max-width: none;
  }

  .sci-page .sci-refs__lead {
    justify-self: start;
    max-width: none;
  }

  .sci-refs__mission-head {
    grid-template-columns: 1fr;
    gap: 0.95rem;
    align-items: start;
    margin-bottom: 1.25rem;
  }

  .sci-refs__mission-copy {
    justify-self: start;
    align-items: flex-start;
    text-align: left;
    padding-bottom: 0;
  }

  .sci-page .sci-refs__desc {
    text-align: left;
  }

  .sci-refs__frame {
    --refs-frame-radius: 1rem;
    aspect-ratio: 2 / 1;
  }

  .sci-refs__sider {
    --refs-sider-radius: var(--refs-frame-radius, 1rem);
    inset: auto 0 0 0;
    width: auto;
    max-width: none;
    gap: 0.55rem;
    padding: 1.2rem 1.25rem 1.3rem;
    border-right: 0;
    border-top: 1px solid rgba(255, 255, 255, 0.22);
    border-radius: 0 0 var(--refs-sider-radius) var(--refs-sider-radius);
    -webkit-mask-image: linear-gradient(0deg, #000 0%, #000 68%, rgba(0, 0, 0, 0.5) 88%, transparent 100%);
    mask-image: linear-gradient(0deg, #000 0%, #000 68%, rgba(0, 0, 0, 0.5) 88%, transparent 100%);
    background:
      linear-gradient(
        0deg,
        rgba(8, 12, 24, 0.82) 0%,
        rgba(14, 20, 36, 0.58) 52%,
        rgba(22, 30, 52, 0.18) 100%
      ),
      linear-gradient(160deg, rgba(255, 255, 255, 0.2), transparent 55%);
    backdrop-filter: blur(28px) saturate(1.7);
    -webkit-backdrop-filter: blur(28px) saturate(1.7);
  }

  .sci-refs__sider::after {
    left: 1.15rem;
    right: auto;
    top: auto;
    bottom: 1.05rem;
    width: 2.25rem;
    height: 3px;
    border-radius: 999px;
  }

  .sci-refs__sider-label,
  .sci-refs__sider-title,
  .sci-refs__sider-text {
    max-width: none;
  }

  .sci-page .sci-refs__sider-text {
    font-size: 0.9rem;
  }

  .sci-refs__img--bombardier {
    object-position: 50% 35%;
  }

  .sci-refs__img--traftor {
    object-position: 50% 30%;
  }

  .sci-refs__divider {
    height: 3rem;
  }
}

@media (min-width: 1600px) {
  .sci-page .sci-refs__title {
    font-size: var(--fs-title);
    max-width: 18ch;
  }

  .sci-page .sci-refs__lead {
    max-width: 38rem;
  }

  .sci-page .sci-refs__name {
    font-size: clamp(2.55rem, 2.6vw, 3.65rem);
  }

  .sci-page .sci-refs__lead,
  .sci-page .sci-refs__desc {
    font-size: clamp(1.1rem, 1vw, 1.25rem);
  }

  .sci-refs__frame {
    aspect-ratio: 3.5 / 1;
  }

  .sci-refs__sider {
    width: min(48rem, 66%);
    padding:
      clamp(2rem, 2.8vw, 2.85rem)
      clamp(2.75rem, 3.5vw, 3.85rem)
      clamp(2rem, 2.8vw, 2.85rem)
      clamp(2rem, 2.6vw, 2.75rem);
  }

  .sci-page .sci-refs__sider-title {
    font-size: clamp(2.05rem, 2.2vw, 2.65rem);
  }

  .sci-page .sci-refs__sider-text {
    font-size: clamp(1.1rem, 1.05vw, 1.22rem);
    max-width: 34rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .sci-refs__arrow,
  .sci-refs__link {
    transition: none;
  }

  .sci-refs.is-enhanced [data-sci-refs-head],
  .sci-refs.is-enhanced [data-sci-refs-mission-head],
  .sci-refs.is-enhanced [data-sci-refs-footer],
  .sci-refs.is-enhanced [data-sci-refs-frame] {
    opacity: 1;
    transform: none;
    clip-path: none;
  }
}