/* FabriqueIA — Atelier industriel numérique */

:root {
  --canvas: #E6E9EE;
  --surface: #F4F6F8;
  --ink: #0B1220;
  --text-secondary: #3D4759;
  --accent: #0F7A6B;
  --accent-hot: #D97706;
  --line: #B8C0CC;
  --font-display: "Syne", sans-serif;
  --font-body: "Source Serif 4", Georgia, serif;
  --font-mono: "IBM Plex Mono", "Courier New", monospace;
  --nav-height: 5.25rem;
  --section-gap: clamp(5rem, 12vw, 9rem);
  --content-max: 72rem;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 100%;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--ink);
  background-color: var(--canvas);
  background-image:
    radial-gradient(ellipse 80% 60% at 85% 10%, rgba(255, 255, 255, 0.55) 0%, transparent 55%),
    radial-gradient(ellipse 50% 40% at 10% 90%, rgba(15, 122, 107, 0.06) 0%, transparent 50%),
    url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.035'/%3E%3C/svg%3E");
  background-attachment: fixed;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
  transition: color 0.25s var(--ease-out);
}

a:hover { color: var(--accent-hot); }

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent-hot);
  outline-offset: 3px;
}

/* ── Layout utilities ── */

.container {
  width: min(var(--content-max), calc(100% - 2rem));
  margin-inline: auto;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.section-title em {
  font-style: normal;
  color: var(--accent);
}

/* ── Buttons ── */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 0.875rem 1.5rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.3s var(--ease-out), color 0.3s var(--ease-out), border-color 0.3s var(--ease-out), transform 0.3s var(--ease-out);
}

.btn-primary {
  background: var(--accent-hot);
  color: var(--ink);
  border-color: var(--accent-hot);
}

.btn-primary:hover {
  background: #b45309;
  border-color: #b45309;
  color: var(--ink);
  transform: translateY(-1px);
}

.btn-secondary {
  background: transparent;
  color: var(--surface);
  border-color: rgba(244, 246, 248, 0.45);
}

.btn-secondary:hover {
  background: rgba(244, 246, 248, 0.1);
  color: var(--surface);
  border-color: rgba(244, 246, 248, 0.7);
}

.btn-outline {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ── Navigation ── */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  transition: background 0.4s var(--ease-out), box-shadow 0.4s var(--ease-out);
}

.nav--scrolled {
  background: rgba(230, 233, 238, 0.92);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--line);
}

.nav--hero {
  background: linear-gradient(to bottom, rgba(11, 18, 32, 0.55) 0%, transparent 100%);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(var(--content-max), calc(100% - 2rem));
  margin-inline: auto;
}

.nav__logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  text-decoration: none;
  line-height: 0;
}

.nav__logo img {
  display: block;
  height: 3.5rem;
  width: auto;
  border-radius: 2px;
}

@media (min-width: 900px) {
  .nav__logo img { height: 4rem; }
}

.nav__links {
  display: none;
  list-style: none;
  gap: 2rem;
  align-items: center;
}

@media (min-width: 900px) {
  .nav__links { display: flex; }
}

.nav__links a {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  color: rgba(244, 246, 248, 0.85);
  transition: color 0.25s;
}

.nav--scrolled .nav__links a { color: var(--text-secondary); }
.nav__links a:hover { color: var(--accent-hot); }
.nav--scrolled .nav__links a:hover { color: var(--accent); }

.nav__cta {
  display: none;
}

@media (min-width: 900px) {
  .nav__cta { display: inline-flex; }
}

.nav__cta.btn {
  padding: 0.625rem 1.125rem;
  font-size: 0.6875rem;
}

.nav--scrolled .nav__cta.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--surface);
}

.nav--scrolled .nav__cta.btn-primary:hover {
  background: #0a6358;
  border-color: #0a6358;
  color: var(--surface);
}

.nav__toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 2.5rem;
  height: 2.5rem;
  background: none;
  border: 1px solid rgba(244, 246, 248, 0.3);
  cursor: pointer;
  padding: 0.5rem;
}

.nav--scrolled .nav__toggle { border-color: var(--line); }

@media (min-width: 900px) {
  .nav__toggle { display: none; }
}

.nav__toggle span {
  display: block;
  height: 1.5px;
  background: var(--surface);
  transition: transform 0.3s, opacity 0.3s;
}

.nav--scrolled .nav__toggle span { background: var(--ink); }

.nav__toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.nav__toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }

.nav__toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

.nav__mobile {
  position: fixed;
  inset: var(--nav-height) 0 0 0;
  background: var(--canvas);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  transform: translateX(100%);
  transition: transform 0.4s var(--ease-out);
  z-index: 99;
  border-top: 1px solid var(--line);
}

.nav__mobile.is-open { transform: translateX(0); }

.nav__mobile a {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  text-decoration: none;
  color: var(--ink);
}

.nav__mobile .nav__mobile-cta {
  align-self: flex-start;
  margin-top: 1rem;
}

@media (min-width: 900px) {
  .nav__mobile { display: none; }
}

/* ── Hero ── */

.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}

.hero__media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 40%;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(105deg, rgba(11, 18, 32, 0.82) 0%, rgba(11, 18, 32, 0.45) 45%, rgba(11, 18, 32, 0.15) 100%),
    linear-gradient(to top, rgba(11, 18, 32, 0.7) 0%, transparent 40%);
}

.hero__content {
  position: relative;
  z-index: 1;
  width: min(var(--content-max), calc(100% - 2rem));
  margin-inline: auto;
  padding: calc(var(--nav-height) + 3rem) 0 4rem;
}

.hero__brand {
  margin-bottom: 2rem;
  opacity: 0;
  transform: translateY(2rem);
  animation: heroIn 1s var(--ease-out) 0.1s forwards;
}

.hero__brand img {
  display: block;
  width: min(100%, 22rem);
  height: auto;
  border-radius: 4px;
  box-shadow: 0 12px 40px rgba(11, 18, 32, 0.35);
}

@media (min-width: 768px) {
  .hero__brand img { width: min(100%, 28rem); }
}

@media (min-width: 1100px) {
  .hero__brand img { width: min(100%, 32rem); }
}

.hero__headline {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.5vw, 2.25rem);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--surface);
  max-width: 28ch;
  margin-bottom: 1.25rem;
  opacity: 0;
  transform: translateY(1.5rem);
  animation: heroIn 0.9s var(--ease-out) 0.55s forwards;
}

.hero__support {
  font-size: clamp(1rem, 1.5vw, 1.125rem);
  line-height: 1.7;
  color: rgba(244, 246, 248, 0.78);
  max-width: 42ch;
  margin-bottom: 2.5rem;
  opacity: 0;
  transform: translateY(1.5rem);
  animation: heroIn 0.9s var(--ease-out) 0.75s forwards;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  opacity: 0;
  transform: translateY(1rem);
  animation: heroIn 0.9s var(--ease-out) 0.95s forwards;
}

@keyframes heroIn {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ── Sections ── */

.section {
  padding-block: var(--section-gap);
  position: relative;
}

.section--surface {
  background: var(--surface);
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 48px 48px;
  background-position: -1px -1px;
}

.section--surface::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 50% at 50% 0%, rgba(255,255,255,0.6) 0%, transparent 70%);
  pointer-events: none;
}

.section__inner {
  position: relative;
  z-index: 1;
}

/* Reveal animation */
.reveal {
  opacity: 0;
  transform: translateY(2rem);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}

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

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* ── Positioning ── */

.positioning__headline {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 2rem;
}

.positioning__headline span {
  display: block;
}

.positioning__headline span:last-child {
  color: var(--accent);
}

.positioning__body {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 52ch;
  margin-bottom: 2rem;
}

.positioning__outcome {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--ink);
  padding-left: 1.25rem;
  border-left: 3px solid var(--accent-hot);
  max-width: 48ch;
}

/* ── Benefits ── */

.benefits {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

@media (min-width: 768px) {
  .benefits {
    grid-template-columns: repeat(3, 1fr);
  }
}

.benefit {
  padding: 2.5rem 0;
  border-bottom: 1px solid var(--line);
}

@media (min-width: 768px) {
  .benefit {
    padding: 3rem 2rem 3rem 0;
    border-bottom: none;
    border-right: 1px solid var(--line);
  }

  .benefit:last-child { border-right: none; }
}

.benefit__num {
  font-family: var(--font-mono);
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 500;
  color: var(--accent-hot);
  line-height: 1;
  margin-bottom: 1rem;
  opacity: 0;
  transform: translateY(1.5rem);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}

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

.benefit__title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  line-height: 1.25;
}

.benefit__text {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ── Methodology ── */

.methodology__header {
  margin-bottom: 3rem;
}

.methodology__track {
  position: relative;
  margin-bottom: 3rem;
}

.methodology__progress {
  position: absolute;
  top: 1.125rem;
  left: 0;
  height: 2px;
  background: var(--accent);
  width: 0;
  transition: width 1.2s var(--ease-out);
  z-index: 2;
}

.methodology__progress-bar {
  position: absolute;
  top: 1.125rem;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--line);
}

.methodology__steps {
  display: grid;
  gap: 2.5rem;
  list-style: none;
}

@media (min-width: 900px) {
  .methodology__steps {
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
  }
}

.methodology__step {
  position: relative;
  padding-top: 2.5rem;
  opacity: 0.45;
  transition: opacity 0.6s var(--ease-out);
}

.methodology__step.is-active,
.methodology__step.is-passed {
  opacity: 1;
}

.methodology__marker {
  position: absolute;
  top: 0;
  left: 0;
  width: 2.25rem;
  height: 2.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  background: var(--canvas);
  border: 2px solid var(--line);
  color: var(--text-secondary);
  transition: border-color 0.4s, background 0.4s, color 0.4s;
}

.methodology__step.is-active .methodology__marker,
.methodology__step.is-passed .methodology__marker {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--surface);
}

.methodology__step-title {
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  line-height: 1.3;
}

.methodology__step-text {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

.methodology__step-text strong {
  color: var(--accent-hot);
  font-weight: 600;
}

/* ── Prestations ── */

.prestations {
  display: grid;
  gap: 0;
}

@media (min-width: 768px) {
  .prestations {
    grid-template-columns: repeat(2, 1fr);
  }
}

.prestation {
  padding: 2.5rem 0;
  border-top: 1px solid var(--line);
}

@media (min-width: 768px) {
  .prestation:nth-child(odd) {
    padding-right: 2.5rem;
    border-right: 1px solid var(--line);
  }

  .prestation:nth-child(even) {
    padding-left: 2.5rem;
  }
}

.prestation__index {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.prestation__title {
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 700;
  margin-bottom: 1rem;
  line-height: 1.25;
}

.prestation__list {
  list-style: none;
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

.prestation__list li {
  position: relative;
  padding-left: 1rem;
  margin-bottom: 0.5rem;
}

.prestation__list li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--line);
}

/* ── Domaines ── */

.domaines__intro {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 52ch;
  margin-bottom: 3rem;
}

.domaines__list {
  list-style: none;
  display: grid;
  gap: 0;
}

.domaine {
  display: grid;
  gap: 0.75rem;
  padding: 2rem 0;
  border-top: 1px solid var(--line);
}

@media (min-width: 768px) {
  .domaine {
    grid-template-columns: 14rem 1fr;
    gap: 2rem;
    align-items: start;
  }
}

.domaine__name {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 700;
  line-height: 1.3;
}

.domaine__desc {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ── Integration ── */

.integration {
  display: grid;
  gap: 3rem;
  align-items: center;
}

@media (min-width: 900px) {
  .integration {
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
  }
}

.integration__visual {
  position: relative;
  overflow: hidden;
}

.integration__visual img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.integration__visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(230, 233, 238, 0.15) 0%, transparent 50%);
  pointer-events: none;
}

.integration__body {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-top: 1.5rem;
}

/* ── Agent focus sections ── */

.agent-focus {
  display: grid;
  gap: 2rem;
}

@media (min-width: 900px) {
  .agent-focus {
    grid-template-columns: 1fr 1.2fr;
    gap: 4rem;
    align-items: start;
  }

  .agent-focus--reverse {
    grid-template-columns: 1.2fr 1fr;
  }

  .agent-focus--reverse .agent-focus__content { order: 2; }
  .agent-focus--reverse .agent-focus__features { order: 1; }
}

.agent-focus__tag {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-hot);
  margin-bottom: 1rem;
}

.agent-focus__title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 1.25rem;
}

.agent-focus__desc {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.agent-focus__features-label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--line);
}

.agent-focus__features {
  list-style: none;
}

.agent-focus__features li {
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 600;
  padding: 1rem 0;
  border-bottom: 1px solid var(--line);
  line-height: 1.35;
}

/* ── Contact / CTA ── */

.contact {
  text-align: center;
  padding-block: calc(var(--section-gap) * 1.2);
}

.contact__positioning {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 54ch;
  margin: 0 auto 3rem;
  line-height: 1.7;
}

.contact__block {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 2.5rem;
}

.contact__email {
  font-family: var(--font-mono);
  font-size: 1.125rem;
  text-decoration: none;
  color: var(--ink);
}

.contact__email:hover { color: var(--accent); }

.contact__site {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--text-secondary);
  text-decoration: none;
}

/* ── Footer ── */

.footer {
  padding: 2rem 0 2.5rem;
  border-top: 1px solid var(--line);
}

.footer__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.footer__brand {
  display: flex;
  align-items: center;
  line-height: 0;
  text-decoration: none;
}

.footer__brand img {
  display: block;
  height: 2.5rem;
  width: auto;
  border-radius: 2px;
}

.footer a {
  color: var(--text-secondary);
  text-decoration: none;
}

.footer a:hover { color: var(--accent); }

/* ── Mentions légales ── */

.page-legal .nav {
  background: rgba(244, 246, 248, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.legal {
  padding: calc(var(--nav-height) + 3rem) 0 var(--section-gap);
}

.legal__inner {
  max-width: 46rem;
}

.legal__title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin: 0.75rem 0 1rem;
}

.legal__lead {
  color: var(--text-secondary);
  margin-bottom: 3rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--line);
}

.legal__section {
  margin-bottom: 2.75rem;
}

.legal__section h2 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--accent);
  margin-bottom: 1rem;
}

.legal__section p {
  margin-bottom: 1rem;
  color: var(--text-secondary);
}

.legal__section p:last-child {
  margin-bottom: 0;
}

.legal__address {
  font-style: normal;
  margin: 1rem 0;
  padding: 1.25rem 1.5rem;
  background: var(--surface);
  border-left: 3px solid var(--accent);
  line-height: 1.7;
}

.legal__list {
  margin: 1rem 0 1.25rem 1.25rem;
  color: var(--text-secondary);
}

.legal__list li {
  margin-bottom: 0.5rem;
}

.legal__list--plain {
  list-style: none;
  margin-left: 0;
}

.legal__section a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.legal__section a:hover {
  color: var(--accent-hot);
}