/* ==========================================================================
   Kpen — feuille de style
   Direction : noir chaud, épuré. Grands titres Anton, accent orange unique,
   filets réduits au nécessaire, beaucoup d'espace.
   Un seul artefact : l'extrait de rapport, couleur papier.
   ========================================================================== */

:root {
  --bg: #161412;
  --text: #fbf7ee;
  --muted: #d9d2c4;
  --line: #3b372f;
  --accent: #ff4d24;
  --paper: #f0ead9;
  --paper-ink: #23211c;

  --display: "Anton", "Arial Narrow", sans-serif;
  --sans: "Archivo", "Segoe UI", system-ui, sans-serif;
  --mono: "IBM Plex Mono", "Consolas", monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 1.125rem;
  font-weight: 500;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--accent); color: #161412; }

.container {
  max-width: 68rem;
  margin-inline: auto;
  padding-inline: 2rem;
}

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* ==== En-tête ==== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.6rem 2rem;
  padding-block: 1.3rem;
}

.brand {
  font-family: var(--display);
  font-size: 1.8rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--text);
  text-decoration: none;
}

.brand-dot { color: var(--accent); }

.nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem 2.4rem;
  font-size: 1rem;
}

.nav a {
  color: var(--text);
  text-decoration: none;
  padding-bottom: 0.1rem;
  border-bottom: 1px solid transparent;
}

.nav a:hover { border-bottom-color: var(--text); }

.nav .nav-contact {
  background: var(--accent);
  color: #161412;
  font-weight: 700;
  padding: 0.6rem 1.2rem;
  border-bottom: none;
}

.nav .nav-contact:hover { background: var(--text); }

/* ==== Hero ==== */

.hero {
  padding-block: 7.5rem 0;
  border-bottom: 1px solid var(--line);
}

.hero h1 {
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(2.9rem, 8.5vw, 6.5rem);
  line-height: 1.04;
  letter-spacing: 0.01em;
  text-transform: uppercase;
  margin: 0 0 4rem;
}

.hero h1 .accent { color: var(--accent); }

.hero-foot {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 2.5rem 4rem;
  margin-bottom: 6rem;
}

.lead {
  max-width: 28em;
  font-size: 1.3rem;
  line-height: 1.65;
  color: var(--muted);
  margin: 0;
}

.hero-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.8rem;
}

/* Bouton : rectangle franc */
.btn {
  display: inline-block;
  background: var(--accent);
  color: #161412;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.0625rem;
  letter-spacing: 0.01em;
  padding: 1.15rem 2.1rem;
  border: 1px solid var(--accent);
  cursor: pointer;
}

.btn:hover {
  background: var(--text);
  border-color: var(--text);
}

.text-link {
  color: var(--text);
  font-size: 1.0625rem;
  text-decoration: underline;
  text-underline-offset: 0.35em;
  text-decoration-color: var(--line);
}

.text-link:hover { text-decoration-color: var(--accent); }

/* Fiche specs : 2 × 2, sans cloisons */
.hero-specs {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.2rem 4rem;
  margin: 0;
  border-top: 1px solid var(--line);
  padding-block: 2.6rem 3.2rem;
}

.hero-specs dt {
  font-family: var(--mono);
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent);
  margin-bottom: 0.4rem;
}

.hero-specs dd {
  margin: 0;
  font-size: 1.125rem;
  color: var(--text);
}

/* ==== Sections ==== */

.section {
  padding-block: 7.5rem;
  border-bottom: 1px solid var(--line);
}

.section-head {
  display: flex;
  align-items: baseline;
  gap: 1.6rem;
  margin-bottom: 4.5rem;
}

.section-num {
  font-family: var(--mono);
  font-size: 0.9375rem;
  color: var(--accent);
  flex: none;
}

h2 {
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  line-height: 1.08;
  letter-spacing: 0.015em;
  text-transform: uppercase;
  margin: 0 0 0.8rem;
}

.section-intro {
  max-width: 34em;
  font-size: 1.15rem;
  color: var(--muted);
  margin: 1rem 0 0;
}

/* ==== Services : grandes rangées sobres ==== */

#services { padding-bottom: 0; }

.service-list {
  border-top: 1px solid var(--line);
}

.service {
  border-bottom: 1px solid var(--line);
}

.service:last-child { border-bottom: none; }

.service-inner {
  display: grid;
  grid-template-columns: minmax(14rem, 24rem) 1fr;
  gap: 1rem 4rem;
  align-items: baseline;
  padding-block: 3.4rem;
}

.service h3 {
  font-family: var(--display);
  font-weight: 400;
  font-size: 1.85rem;
  line-height: 1.15;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  margin: 0;
  transition: color 0.15s ease;
}

.service:hover h3 { color: var(--accent); }

.service p {
  margin: 0;
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--muted);
  max-width: 38em;
}

/* ==== Approche : 2 × 2, numéros discrets ==== */

.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 3.5rem 4rem;
}

.steps li { max-width: 32em; }

.step-num {
  display: block;
  font-family: var(--mono);
  font-size: 0.9375rem;
  color: var(--accent);
  margin-bottom: 0.9rem;
}

.steps h3 {
  font-family: var(--display);
  font-weight: 400;
  font-size: 1.45rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  margin: 0 0 0.8rem;
}

.steps p {
  margin: 0;
  font-size: 1.0625rem;
  color: var(--muted);
}

/* ==== À propos ==== */

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(19rem, 1fr);
  gap: 5.5rem;
  align-items: start;
}

.about-text p {
  max-width: 32em;
  color: var(--muted);
  margin-block: 0 1.6rem;
}

.engagements {
  list-style: none;
  margin: 2.8rem 0 0;
  padding: 0;
  max-width: 32em;
}

.engagements li {
  padding: 0.55rem 0 0.55rem 2rem;
  position: relative;
}

.engagements li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--accent);
}

/* Extrait de rapport : seule pièce claire de la page */
.rapport {
  margin: 0;
  position: sticky;
  top: 7rem;
}

.rapport-doc {
  position: relative;
  background: var(--paper);
  color: var(--paper-ink);
  padding: 3rem 2.1rem 2rem;
}

.rapport-stamp {
  position: absolute;
  top: 1.2rem;
  right: 1.3rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: #a8321f;
  border: 2px solid #a8321f;
  padding: 0.3rem 0.6rem;
  transform: rotate(2deg);
  opacity: 0.85;
}

.rapport-head {
  font-family: var(--mono);
  font-size: 0.8125rem;
  line-height: 1.6;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #6b6558;
  margin: 0 0 1.5rem;
}

.rapport table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
}

.rapport th {
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  text-align: left;
  color: #6b6558;
  border-bottom: 1px solid var(--paper-ink);
  padding: 0.5rem 0;
}

.rapport td {
  border-bottom: 1px solid #d5cebc;
  padding: 0.75rem 0;
  vertical-align: top;
  line-height: 1.5;
}

.rapport td:last-child,
.rapport th:last-child {
  text-align: right;
  white-space: nowrap;
  padding-left: 1rem;
}

.rapport tbody tr:first-child td:last-child {
  color: #a8321f;
  font-weight: 600;
}

.rapport-note {
  font-size: 0.875rem;
  line-height: 1.6;
  color: #6b6558;
  margin: 1.4rem 0 0;
}

.rapport figcaption {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--muted);
  margin-top: 1.4rem;
  padding-left: 0.2rem;
}

/* ==== Contact ==== */

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
  gap: 5.5rem;
  align-items: start;
}

.contact-text p {
  max-width: 26em;
  color: var(--muted);
}

.contact-info {
  margin: 2.8rem 0 0;
  max-width: 28em;
}

.contact-info div {
  display: flex;
  align-items: baseline;
  gap: 1.8rem;
  padding-block: 0.55rem;
}

.contact-info dt {
  flex: 0 0 7rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.contact-info dd {
  margin: 0;
  font-size: 1.125rem;
}

.contact-info a {
  color: var(--text);
  text-underline-offset: 0.3em;
  text-decoration-color: var(--line);
}

.contact-info a:hover { text-decoration-color: var(--accent); }

/* Formulaire : champs filetés */
.contact-form {
  border: 1px solid var(--line);
  padding: 3rem 3rem 2.4rem;
}

.hidden-field { display: none; }

.field { margin-bottom: 2.2rem; }

.field label {
  display: block;
  font-family: var(--mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin-bottom: 0.5rem;
}

.label-note { text-transform: none; letter-spacing: normal; }

.field input,
.field textarea {
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--line);
  border-radius: 0;
  font-family: var(--sans);
  font-size: 1.125rem;
  color: var(--text);
  padding: 0.6rem 0.1rem;
}

.field textarea { resize: vertical; }

.field input:focus,
.field textarea:focus {
  outline: none;
  border-bottom: 2px solid var(--accent);
  padding-bottom: calc(0.6rem - 1px);
}

.field input::placeholder,
.field textarea::placeholder { color: #9a927f; }

.form-note {
  font-size: 0.875rem;
  color: var(--muted);
  margin: 1.4rem 0 0;
}

/* ==== Pied de page ==== */

.site-footer {
  padding-block: 3.5rem 4rem;
}

.footer-inner p {
  margin: 0.3rem 0;
  color: var(--muted);
  font-size: 1rem;
}

.footer-legal {
  font-family: var(--mono);
  font-size: 0.8125rem !important;
  margin-top: 1.4rem !important;
}

/* ==== Mobile ==== */

@media (max-width: 46rem) {
  body { font-size: 1.0625rem; }

  /* L'en-tête empilé est trop haut pour rester collé sur petit écran */
  .site-header { position: static; }

  .container { padding-inline: 1.4rem; }

  .hero { padding-top: 4.5rem; }

  .hero h1 { margin-bottom: 2.8rem; }

  .hero-foot { margin-bottom: 4rem; }

  .lead { font-size: 1.15rem; }

  .section { padding-block: 4.5rem; }

  .section-head { gap: 1rem; margin-bottom: 3rem; }

  .about-grid,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 3.5rem;
  }

  .rapport { position: static; }

  .hero-specs {
    grid-template-columns: 1fr;
    gap: 1.4rem 0;
    padding-block: 2rem 2.4rem;
  }

  .service-inner {
    grid-template-columns: 1fr;
    gap: 0.7rem;
    padding-block: 2.4rem;
  }

  .steps {
    grid-template-columns: 1fr;
    gap: 2.6rem 0;
  }

  .contact-form { padding: 2rem 1.5rem 1.6rem; }
}