/* Section 6 — Intégrer les calculs (premium, contrastes soignés) */
.sci-integ {
  --integ-bg: #eef1f5;
  --integ-ink: #0b1220;
  --integ-indigo: #3d4578;
  --integ-orange: #e87a3a;
  --integ-orange-hot: #f1894e;
  --integ-muted: #3a4658;
  --integ-muted-soft: #516074;
  --integ-line: rgba(11, 18, 32, 0.1);
  --integ-panel: #101826;
  --integ-panel-2: #141e2e;
  --integ-soft: #ffffff;
  --integ-on-dark: #f7f9fc;
  --integ-on-dark-muted: #d0d9e6;
  --integ-glass: rgba(255, 255, 255, 0.07);
  --integ-glass-border: rgba(255, 255, 255, 0.14);
  position: relative;
  isolation: isolate;
  background:
    radial-gradient(ellipse 90% 55% at 50% -8%, rgba(72, 79, 138, 0.07), transparent 58%),
    radial-gradient(ellipse 40% 30% at 100% 40%, rgba(232, 122, 58, 0.04), transparent 50%),
    linear-gradient(180deg, #f4f6f9 0%, var(--integ-bg) 40%, #e8ecf2 100%);
  color: var(--integ-ink);
  /* padding-block = --sci-section-y via .sci-page :is(.sci-integ, ...) */
  overflow-x: clip;
}

.sci-integ__inner {
  width: 100%;
}

.sci-integ__head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1.5rem 2.5rem;
  align-items: end;
  margin-bottom: clamp(3rem, 5vw, 4.25rem);
}

.sci-integ__copy {
  min-width: 0;
}

.sci-integ__title {
  margin: 0;
  max-width: 20ch;
  font-family: var(--font-title);
  font-size: var(--fs-title);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.028em;
  color: var(--integ-ink);
  text-wrap: balance;
}

.sci-integ__intro {
  margin: 1.15rem 0 0;
  max-width: 46rem;
  font-size: clamp(1.05rem, 1.35vw, 1.2rem);
  line-height: 1.72;
  color: var(--integ-muted);
  font-weight: 500;
}

.sci-integ__modes {
  display: inline-flex;
  align-items: center;
  gap: 0.2rem;
  padding: 0.3rem;
  border: 1px solid rgba(11, 18, 32, 0.1);
  border-radius: 999px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.95), rgba(255, 255, 255, 0.82));
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.9) inset,
    0 10px 32px rgba(11, 18, 32, 0.07);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.sci-integ__mode {
  position: relative;
  min-height: 2.55rem;
  padding: 0.5rem 1.2rem 0.65rem;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--integ-muted);
  font: inherit;
  font-size: 0.88rem;
  font-weight: 650;
  cursor: pointer;
  transition: background 0.22s ease, color 0.22s ease, box-shadow 0.22s ease;
}

.sci-integ__mode:hover {
  color: var(--integ-ink);
  background: rgba(11, 18, 32, 0.045);
}

.sci-integ__mode:focus-visible {
  outline: 2px solid var(--integ-orange);
  outline-offset: 2px;
}

.sci-integ__mode.is-active {
  background: var(--integ-ink);
  color: #fff;
  box-shadow: 0 6px 16px rgba(11, 18, 32, 0.22);
}

.sci-integ__mode.is-active::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0.38rem;
  width: 1.25rem;
  height: 2.5px;
  border-radius: 999px;
  background: var(--integ-orange-hot);
  transform: translateX(-50%);
  box-shadow: 0 0 8px rgba(241, 137, 78, 0.45);
}

.sci-integ__demo-host,
.sci-integ__demo-root {
  width: 100%;
}

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

.sci-integ__demo {
  display: flex;
  flex-direction: column;
  width: 100%;
  min-height: clamp(31rem, 62vh, 40rem);
  border: 1px solid rgba(11, 18, 32, 0.16);
  border-radius: 1.2rem;
  background:
    linear-gradient(165deg, rgba(255, 255, 255, 0.06) 0%, transparent 38%),
    linear-gradient(180deg, #1a2438 0%, var(--integ-panel) 42%, #0c121c 100%);
  color: var(--integ-on-dark);
  overflow: hidden;
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.08) inset,
    0 0 0 1px rgba(255, 255, 255, 0.03) inset,
    0 40px 80px rgba(11, 18, 32, 0.22),
    0 12px 28px rgba(11, 18, 32, 0.1);
}

.sci-integ__topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 2.9rem;
  padding: 0 1.15rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.82rem;
  letter-spacing: 0.02em;
  font-weight: 550;
  color: var(--integ-on-dark-muted);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.05), transparent),
    rgba(0, 0, 0, 0.22);
}

.sci-integ__topbar-title {
  color: #e8eef8;
  font-weight: 600;
}

.sci-integ__topbar-actions {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.sci-integ__topbar-btn {
  display: grid;
  place-items: center;
  width: 1.85rem;
  height: 1.85rem;
  border: 1px solid transparent;
  border-radius: 0.45rem;
  background: transparent;
  color: #c5d0e0;
  cursor: default;
}

.sci-integ__topbar-btn svg {
  width: 1rem;
  height: 1rem;
}

.sci-integ__workspace {
  display: grid;
  grid-template-columns: minmax(12.5rem, 20%) minmax(0, 1fr) minmax(13.5rem, 22%);
  flex: 1 1 auto;
  min-height: 0;
  transition: grid-template-columns 0.35s ease;
}

.sci-integ__demo[data-mode="web"] .sci-integ__workspace {
  grid-template-columns: minmax(0, 1fr) minmax(14rem, 28%);
}

.sci-integ__demo[data-mode="hybrid"] .sci-integ__workspace {
  grid-template-columns: minmax(11rem, 22%) minmax(0, 1fr) minmax(11rem, 22%);
}

.sci-integ__tree,
.sci-integ__params,
.sci-integ__local,
.sci-integ__shared {
  min-height: 0;
  overflow: auto;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.03), transparent 40%),
    var(--integ-panel-2);
}

.sci-integ__tree {
  border-right: 1px solid rgba(255, 255, 255, 0.07);
  padding: 0.9rem 0.7rem;
}

.sci-integ__params,
.sci-integ__shared {
  border-left: 1px solid rgba(255, 255, 255, 0.07);
  padding: 1.05rem 1rem 1.15rem;
}

.sci-integ__local {
  border-right: 1px solid rgba(255, 255, 255, 0.07);
  padding: 1rem 0.95rem;
}

.sci-integ__demo[data-mode="web"] .sci-integ__tree,
.sci-integ__demo[data-mode="web"] .sci-integ__local,
.sci-integ__demo[data-mode="web"] .sci-integ__shared,
.sci-integ__demo[data-mode="desktop"] .sci-integ__local,
.sci-integ__demo[data-mode="desktop"] .sci-integ__shared,
.sci-integ__demo[data-mode="hybrid"] .sci-integ__tree,
.sci-integ__demo[data-mode="hybrid"] .sci-integ__params {
  display: none;
}

.sci-integ__webnav {
  display: none;
  gap: 0.45rem;
  padding: 0.7rem 0.85rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  overflow-x: auto;
  background: rgba(0, 0, 0, 0.14);
}

.sci-integ__demo[data-mode="web"] .sci-integ__webnav {
  display: flex;
}

.sci-integ__webnav-btn {
  flex: 0 0 auto;
  min-height: 2.15rem;
  padding: 0.35rem 0.85rem;
  border: 1px solid var(--integ-glass-border);
  border-radius: 999px;
  background: var(--integ-glass);
  color: var(--integ-on-dark);
  font: inherit;
  font-size: 0.78rem;
  font-weight: 650;
  cursor: pointer;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.sci-integ__webnav-btn.is-active {
  border-color: rgba(232, 122, 58, 0.55);
  background: rgba(72, 79, 138, 0.5);
  color: #fff;
}

.sci-integ__webnav-btn:focus-visible {
  outline: 2px solid var(--integ-orange);
  outline-offset: 2px;
}

.sci-integ__center {
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
  background: #0d1420;
}

.sci-integ__viewport {
  position: relative;
  flex: 1 1 auto;
  min-height: 18rem;
  background:
    radial-gradient(ellipse 70% 55% at 50% 42%, #fafbfd 0%, #eef1f6 62%, #e2e7ef 100%);
}

.sci-integ__canvas {
  display: block !important;
  width: 100% !important;
  height: 100% !important;
}

.sci-integ__viewport-fallback {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: var(--integ-muted);
  font-size: 0.95rem;
  font-weight: 550;
  background: linear-gradient(145deg, #f2f4f8, #e4e9f0);
}

.sci-integ__floatbar {
  position: absolute;
  z-index: 2;
  top: 0.85rem;
  left: 0.85rem;
  right: 0.85rem;
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
  pointer-events: none;
}

.sci-integ__floatbar-group {
  display: inline-flex;
  align-items: center;
  gap: 0.15rem;
  padding: 0.28rem;
  border: 1px solid rgba(11, 18, 32, 0.1);
  border-radius: 0.65rem;
  background: rgba(255, 255, 255, 0.78);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.85) inset,
    0 8px 22px rgba(11, 18, 32, 0.1);
  backdrop-filter: blur(14px) saturate(1.2);
  -webkit-backdrop-filter: blur(14px) saturate(1.2);
  pointer-events: auto;
}

.sci-integ__tool {
  display: grid;
  place-items: center;
  width: 1.85rem;
  height: 1.85rem;
  border: 0;
  border-radius: 0.45rem;
  background: transparent;
  color: #2a3548;
  cursor: default;
}

.sci-integ__tool.is-active {
  background: rgba(11, 18, 32, 0.08);
  color: var(--integ-ink);
}

.sci-integ__tool svg {
  width: 0.95rem;
  height: 0.95rem;
}

.sci-integ__import {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.05rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.03), transparent),
    rgba(0, 0, 0, 0.28);
}

.sci-integ__import-label {
  margin-right: 0.4rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: #c8d2e0;
}

.sci-integ__source {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  min-height: 2.25rem;
  padding: 0.35rem 0.9rem;
  border: 1px solid var(--integ-glass-border);
  border-radius: 0.55rem;
  background: var(--integ-glass);
  color: #e8eef8;
  font: inherit;
  font-size: 0.8rem;
  font-weight: 650;
  cursor: pointer;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: border-color 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.sci-integ__source:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}

.sci-integ__source.is-active {
  border-color: rgba(72, 79, 138, 0.95);
  background: rgba(72, 79, 138, 0.42);
  color: #fff;
}

.sci-integ__source.is-active::before {
  content: "";
  width: 0.42rem;
  height: 0.42rem;
  border-radius: 50%;
  background: var(--integ-orange-hot);
  box-shadow: 0 0 0 2px rgba(241, 137, 78, 0.28);
}

.sci-integ__source:focus-visible {
  outline: 2px solid var(--integ-orange);
  outline-offset: 2px;
}

.sci-integ__source-ico {
  width: 0.95rem;
  height: 0.95rem;
  opacity: 0.95;
}

.sci-integ__group {
  margin-bottom: 0.45rem;
}

.sci-integ__group-btn,
.sci-integ__leaf {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  width: 100%;
  min-height: 2.05rem;
  padding: 0.34rem 0.55rem;
  border: 0;
  border-radius: 0.5rem;
  background: transparent;
  color: var(--integ-on-dark-muted);
  font: inherit;
  font-size: 0.8rem;
  text-align: left;
  cursor: default;
}

.sci-integ__group-btn {
  cursor: pointer;
  font-weight: 700;
  color: #f0f4fa;
}

.sci-integ__group-btn:hover,
.sci-integ__leaf.is-interactive:hover {
  background: rgba(255, 255, 255, 0.07);
  color: #fff;
}

.sci-integ__leaf.is-interactive {
  cursor: pointer;
  color: #dce5f2;
}

.sci-integ__leaf.is-active {
  background: rgba(72, 79, 138, 0.55);
  color: #fff;
  box-shadow: inset 2.5px 0 0 var(--integ-orange-hot);
}

.sci-integ__group-btn:focus-visible,
.sci-integ__leaf.is-interactive:focus-visible {
  outline: 2px solid var(--integ-orange);
  outline-offset: 1px;
}

.sci-integ__chev {
  width: 0.7rem;
  opacity: 0.85;
  transition: transform 0.2s ease;
  color: #fff;
}

.sci-integ__group.is-open .sci-integ__chev {
  transform: rotate(90deg);
}

.sci-integ__leaves {
  display: none;
  padding-left: 1.15rem;
}

.sci-integ__group.is-open .sci-integ__leaves {
  display: block;
}

.sci-integ__ico {
  width: 1rem;
  height: 1rem;
  flex: 0 0 auto;
  opacity: 0.92;
  color: #dce5f2;
}

.sci-integ__panel-title {
  margin: 0 0 0.95rem;
  font-size: 0.78rem;
  font-weight: 750;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: #eef3fa;
}

.sci-integ__section-label {
  margin: 0.2rem 0 0.8rem;
  padding-top: 0.45rem;
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: #cfd8e6;
  border-top: 1px solid rgba(255, 255, 255, 0.09);
}

.sci-integ__badge {
  display: inline-flex;
  margin-bottom: 0.7rem;
  padding: 0.22rem 0.6rem;
  border-radius: 999px;
  border: 1px solid rgba(241, 137, 78, 0.45);
  background: rgba(241, 137, 78, 0.16);
  color: #ffe0c8;
  font-size: 0.68rem;
  font-weight: 750;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.sci-integ__field {
  display: grid;
  gap: 0.38rem;
  margin-bottom: 0.85rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.sci-integ__field:last-child {
  border-bottom: 0;
  margin-bottom: 0;
  padding-bottom: 0;
}

.sci-integ__field label,
.sci-integ__field > span:first-child {
  font-size: 0.76rem;
  font-weight: 650;
  color: #cdd7e6;
}

.sci-integ__field select,
.sci-integ__field input[type="number"],
.sci-integ__ro {
  width: 100%;
  min-height: 2.4rem;
  padding: 0.45rem 0.75rem;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 0.55rem;
  background: rgba(255, 255, 255, 0.075);
  color: #fff;
  font: inherit;
  font-size: 0.85rem;
  font-weight: 550;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.04) inset;
}

.sci-integ__field select option {
  color: #0b1220;
  background: #fff;
}

.sci-integ__field input[type="range"] {
  width: 100%;
  accent-color: var(--integ-orange);
}

.sci-integ__field select:focus-visible,
.sci-integ__field input:focus-visible {
  outline: 2px solid var(--integ-orange);
  outline-offset: 1px;
}

.sci-integ__ro {
  display: flex;
  align-items: center;
  color: #f4f7fb;
}

.sci-integ__hint {
  margin: 0.3rem 0 0;
  font-size: 0.74rem;
  line-height: 1.5;
  color: #a8b4c6;
}

.sci-integ__note {
  margin: 0;
  padding: 0.7rem 1.05rem;
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  font-size: 0.76rem;
  line-height: 1.5;
  color: #b8c4d4;
  background: rgba(0, 0, 0, 0.22);
}

.sci-integ__cols {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  margin-top: clamp(2.4rem, 4.4vw, 3.15rem);
  border-top: 1px solid var(--integ-line);
  padding-top: 0.35rem;
}

.sci-integ__col {
  padding: 1.75rem 1.55rem 0.4rem;
}

.sci-integ__col + .sci-integ__col {
  border-left: 1px solid var(--integ-line);
}

.sci-integ__col h3 {
  margin: 0;
  font-family: var(--font-title);
  font-size: clamp(1.28rem, 1.75vw, 1.52rem);
  font-weight: 700;
  line-height: 1.25;
  color: var(--integ-ink);
  text-wrap: balance;
}

.sci-integ__col p {
  margin: 0.95rem 0 0;
  font-size: 1.05rem;
  line-height: 1.72;
  color: var(--integ-muted);
  font-weight: 500;
}

.sci-integ__col p a {
  color: var(--integ-indigo);
  font-weight: 700;
  text-decoration: underline;
  text-decoration-color: rgba(61, 69, 120, 0.42);
  text-underline-offset: 0.16em;
}

.sci-integ__col p a:hover {
  color: var(--integ-orange);
  text-decoration-color: rgba(232, 122, 58, 0.55);
}

.sci-integ__col a:focus-visible {
  outline: 2px solid var(--integ-orange);
  outline-offset: 2px;
}

.sci-integ__links {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.6rem;
  margin-top: 1.25rem;
}

.sci-integ__chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  min-height: auto;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: none;
  color: var(--integ-orange);
  font-size: 0.98rem;
  font-weight: 700;
  text-decoration: none;
  letter-spacing: 0.01em;
}

.sci-integ__chip::after {
  content: "→";
  transition: transform 0.18s ease;
}

.sci-integ__chip:hover {
  color: #c95f24;
}

.sci-integ__chip:hover::after {
  transform: translateX(3px);
}

.sci-integ__chip:focus-visible {
  outline: 2px solid var(--integ-orange);
  outline-offset: 3px;
}

@media (max-width: 1100px) {
  .sci-integ__workspace {
    grid-template-columns: minmax(10.5rem, 24%) minmax(0, 1fr) minmax(12rem, 26%);
  }

  .sci-integ__demo[data-mode="hybrid"] .sci-integ__workspace {
    grid-template-columns: minmax(9.5rem, 24%) minmax(0, 1fr) minmax(9.5rem, 24%);
  }
}

@media (max-width: 900px) {
  .sci-integ__head {
    grid-template-columns: 1fr;
    align-items: start;
  }

  .sci-integ__modes {
    justify-self: start;
  }

  .sci-integ__title {
    max-width: none;
  }

  .sci-integ__cols {
    grid-template-columns: 1fr;
  }

  .sci-integ__col,
  .sci-integ__col + .sci-integ__col {
    border-left: 0;
    border-top: 1px solid var(--integ-line);
    padding-left: 0;
    padding-right: 0;
  }

  .sci-integ__workspace,
  .sci-integ__demo[data-mode="web"] .sci-integ__workspace,
  .sci-integ__demo[data-mode="hybrid"] .sci-integ__workspace {
    grid-template-columns: 1fr;
  }

  .sci-integ__tree,
  .sci-integ__params,
  .sci-integ__local,
  .sci-integ__shared {
    border: 0;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    max-height: 14rem;
  }

  .sci-integ__demo[data-mode="web"] .sci-integ__tree,
  .sci-integ__demo[data-mode="desktop"] .sci-integ__local,
  .sci-integ__demo[data-mode="desktop"] .sci-integ__shared,
  .sci-integ__demo[data-mode="hybrid"] .sci-integ__tree,
  .sci-integ__demo[data-mode="hybrid"] .sci-integ__params {
    display: none;
  }

  .sci-integ__demo[data-mode="web"] .sci-integ__params,
  .sci-integ__demo[data-mode="hybrid"] .sci-integ__local,
  .sci-integ__demo[data-mode="hybrid"] .sci-integ__shared,
  .sci-integ__demo[data-mode="desktop"] .sci-integ__tree,
  .sci-integ__demo[data-mode="desktop"] .sci-integ__params {
    display: block;
  }

  .sci-integ__viewport {
    min-height: 15.5rem;
  }

  .sci-integ__floatbar-group:last-child {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .sci-integ__workspace,
  .sci-integ__mode,
  .sci-integ__chev,
  .sci-integ__chip::after,
  .sci-integ__source {
    transition: none !important;
  }
}