/* MOTUS 32
   Palette : noir pur et blanc pur, aucun accent.
   Typo : Archivo uniquement. Les titres utilisent la largeur étendue
   de la police (font-stretch), le texte courant la largeur normale. */

:root {
  --black: #000000;
  --white: #ffffff;
  --ink: var(--white);
  --ground: var(--black);
  --muted: rgba(255, 255, 255, 0.64);
  --line: rgba(255, 255, 255, 0.22);
  --gutter: clamp(20px, 4vw, 56px);
  --header-h: 68px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family: "Archivo", Helvetica, Arial, sans-serif;
  font-size: 1.0625rem;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

[hidden] { display: none !important; }

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

h1, h2, h3, h4, p, ul, ol, figure, blockquote { margin: 0; }
ul, ol { padding: 0; list-style: none; }

a { color: inherit; }

:focus-visible {
  outline: 2px solid currentColor;
  outline-offset: 3px;
}

.wrap {
  width: 100%;
  max-width: 1400px;
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.skip {
  position: absolute;
  left: var(--gutter);
  top: -100px;
  z-index: 20;
  padding: 10px 16px;
  background: var(--white);
  color: var(--black);
}
.skip:focus { top: 12px; }

.muted { color: var(--muted); }

/* ---------- Titres ---------- */

h1, h2 {
  font-weight: 400;
  font-stretch: 125%;
  letter-spacing: -0.035em;
}

h2 {
  font-size: clamp(2rem, 4.6vw, 4rem);
  line-height: 1;
}

h3 {
  font-size: 1.25rem;
  font-weight: 500;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

h4 {
  font-size: 1rem;
  font-weight: 400;
  color: var(--muted);
}

/* ---------- Boutons et liens ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 28px;
  border: 1px solid var(--white);
  border-radius: 999px;
  background: var(--white);
  color: var(--black);
  font: inherit;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.15s, color 0.15s;
}
.btn:hover { background: transparent; color: var(--white); }

.btn-small { min-height: 40px; padding: 0 18px; font-size: 0.9375rem; }

.btn-invert { border-color: var(--black); background: var(--black); color: var(--white); }
.btn-invert:hover { background: transparent; color: var(--black); }
.btn[disabled] { opacity: 0.5; cursor: default; }

.text-link {
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 5px;
}
.text-link:hover { text-decoration-thickness: 2px; }

/* ---------- En-tête ---------- */

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

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: var(--header-h);
}

.wordmark {
  font-size: 1.25rem;
  font-weight: 400;
  letter-spacing: 0.02em;
  text-decoration: none;
  white-space: nowrap;
}

.site-nav { display: none; gap: 32px; }
.site-nav a {
  font-size: 0.9375rem;
  text-decoration: none;
  color: var(--muted);
}
.site-nav a:hover { color: var(--white); }

.header-end { display: flex; align-items: center; gap: 20px; }

.lang { display: flex; align-items: center; gap: 6px; font-size: 0.9375rem; }
.lang a {
  padding: 8px 2px;
  color: var(--muted);
  text-decoration: none;
}
.lang a:hover { color: var(--white); }
.lang a[aria-current="true"] {
  color: var(--white);
  text-decoration: underline;
  text-underline-offset: 5px;
}
.lang span { color: var(--line); }

/* ---------- Hero ---------- */

.hero {
  padding-top: clamp(56px, 11vh, 140px);
  padding-bottom: clamp(48px, 8vh, 96px);
}

.hero h1 {
  font-size: clamp(3rem, 13.2vw, 12.5rem);
  line-height: 0.88;
  letter-spacing: -0.05em;
  margin-left: -0.04em;
}

.hero-foot {
  display: grid;
  gap: 28px;
  margin-top: clamp(36px, 6vh, 72px);
}

.hero-foot p {
  max-width: 34em;
  font-size: clamp(1.125rem, 1.5vw, 1.375rem);
  line-height: 1.45;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px 28px;
}

/* ---------- Sections ---------- */

.section {
  padding-top: clamp(64px, 10vw, 144px);
}

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 24px;
}

.count { color: var(--muted); }

.sub-h { margin-top: clamp(64px, 9vw, 120px); }

/* ---------- Projets ---------- */

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 32px;
}

.chip {
  min-height: 44px;
  padding: 0 20px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  color: var(--white);
  font: inherit;
  font-size: 0.9375rem;
  cursor: pointer;
  transition: background-color 0.15s, color 0.15s, border-color 0.15s;
}
.chip:hover { border-color: var(--white); }
.chip[aria-pressed="true"] {
  border-color: var(--white);
  background: var(--white);
  color: var(--black);
}

.grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 56px var(--gutter);
  margin-top: 40px;
}

.card img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background: rgba(255, 255, 255, 0.08);
  font-size: 0.875rem;
  color: var(--muted);
}

.card-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin-top: 16px;
}

.card-cat {
  flex: none;
  font-size: 0.875rem;
  color: var(--muted);
}

.card p {
  max-width: 44em;
  margin-top: 6px;
  font-size: 0.9375rem;
  line-height: 1.5;
  color: var(--muted);
}

/* ---------- Studio ---------- */

.studio-intro {
  display: grid;
  gap: 24px;
  max-width: 54rem;
  margin-top: 40px;
}

.lead {
  font-size: clamp(1.375rem, 2.5vw, 2.125rem);
  line-height: 1.25;
  letter-spacing: -0.015em;
}

.studio-intro p:not(.lead) { max-width: 40em; color: var(--muted); }

.principles {
  display: grid;
  gap: 32px var(--gutter);
  margin-top: clamp(48px, 6vw, 80px);
}

.principle {
  padding-top: 20px;
  border-top: 1px solid var(--line);
}
.principle p { margin-top: 8px; color: var(--muted); }

/* ---------- Offre ---------- */

.offer {
  display: grid;
  gap: 48px var(--gutter);
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid var(--line);
}

.offer-summary h3 { font-size: 1rem; font-weight: 400; color: var(--muted); }

.price {
  margin-top: 4px;
  font-size: clamp(2.25rem, 4.5vw, 3.5rem);
  font-stretch: 125%;
  letter-spacing: -0.035em;
  line-height: 1.05;
}

.offer-summary .muted { margin-top: 8px; }
.offer-summary .btn { margin-top: 28px; }

.options { margin-top: 40px; }
.options ul { display: flex; flex-wrap: wrap; gap: 4px 24px; margin-top: 4px; }

.offer-detail { display: grid; gap: 32px; }

.offer-group ul { margin-top: 8px; }
.offer-group li {
  padding: 12px 0;
  border-top: 1px solid var(--line);
}

.process {
  display: grid;
  gap: 32px var(--gutter);
  margin-top: 40px;
  counter-reset: step;
}

.process li {
  padding-top: 20px;
  border-top: 1px solid var(--line);
  counter-increment: step;
}

.process li::before {
  content: counter(step);
  display: block;
  margin-bottom: 20px;
  font-size: 2.5rem;
  font-stretch: 125%;
  line-height: 1;
  letter-spacing: -0.03em;
}

.process p { margin-top: 8px; color: var(--muted); }

/* ---------- Avis ---------- */

.reviews {
  display: grid;
  gap: 32px var(--gutter);
  margin-block: 40px 28px;
}

.review {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.review blockquote p { font-size: 1.125rem; line-height: 1.45; }
.review figcaption { font-size: 0.9375rem; color: var(--muted); }

.note { margin-bottom: 12px; font-size: 0.875rem; color: var(--muted); }

/* ---------- FAQ ---------- */

.faq {
  max-width: 56rem;
  margin-top: 40px;
  border-bottom: 1px solid var(--line);
}

.faq details { border-top: 1px solid var(--line); }

.faq summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 22px 0;
  font-size: 1.125rem;
  font-weight: 500;
  cursor: pointer;
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }

.faq summary::after {
  content: "+";
  flex: none;
  font-size: 1.5rem;
  font-weight: 400;
  line-height: 1;
}
.faq details[open] summary::after { content: "\2212"; }

.faq details p {
  max-width: 42em;
  padding-bottom: 24px;
  color: var(--muted);
}

/* ---------- Contact : bande inversée, encre noire sur fond blanc ---------- */

.contact {
  margin-top: clamp(64px, 10vw, 144px);
  padding-block: clamp(56px, 8vw, 120px);
  background: var(--white);
  color: var(--black);
}

.contact-row { display: grid; gap: 40px var(--gutter); }

.contact-intro p { max-width: 30em; margin-top: 20px; }
.contact-intro p + p { margin-top: 12px; }

.contact form {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.field { display: grid; gap: 6px; }
.field label { font-size: 0.9375rem; }
.field label span { color: rgba(0, 0, 0, 0.6); }

.field input,
.field textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--black);
  border-radius: 0;
  background: var(--white);
  color: var(--black);
  font: inherit;
}
.field textarea { resize: vertical; min-height: 120px; }
.field input::placeholder,
.field textarea::placeholder { color: rgba(0, 0, 0, 0.5); }

.contact .btn { justify-self: start; }

.hp { position: absolute; left: -9999px; }

.form-error { font-size: 0.9375rem; }

.form-ok {
  padding: 32px;
  border: 1px solid var(--black);
}
.form-ok h3 { font-size: 1.5rem; }
.form-ok p { margin-top: 8px; }

/* ---------- Pied de page ---------- */

.site-footer { padding-block: 32px; font-size: 0.9375rem; color: var(--muted); }

.footer-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px 32px;
}

.site-footer ul { display: flex; flex-wrap: wrap; gap: 8px 24px; }
.site-footer a { text-decoration: none; }
.site-footer a:hover { color: var(--white); }

/* ---------- Écrans plus larges ---------- */

@media (min-width: 420px) {
  .lang { font-size: 1rem; }
}

@media (min-width: 700px) {
  .grid { grid-template-columns: repeat(2, 1fr); }
  .principles { grid-template-columns: repeat(3, 1fr); }
  .process { grid-template-columns: repeat(2, 1fr); }
  .reviews { grid-template-columns: repeat(2, 1fr); }
  .contact form { grid-template-columns: repeat(2, 1fr); }
  .field-wide,
  .contact form .btn,
  .form-error { grid-column: 1 / -1; }
}

@media (min-width: 960px) {
  .site-nav { display: flex; }
  .hero-foot {
    grid-template-columns: 1fr auto;
    align-items: end;
  }
  .offer { grid-template-columns: 5fr 7fr; }
  .process { grid-template-columns: repeat(4, 1fr); }
  .reviews { grid-template-columns: repeat(3, 1fr); }
  .contact-row { grid-template-columns: 5fr 7fr; }
}

@media (min-width: 1200px) {
  .grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 419px) {
  .header-end { gap: 12px; }
  .btn-small { padding: 0 14px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}