@font-face {
  font-family: "Instrument Serif";
  src: url("fonts/display.woff2") format("woff2");
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: "Instrument Sans";
  src: url("fonts/body.woff2") format("woff2");
  font-weight: 400 700;
  font-display: swap;
}

:root {
  --navy: #0b1f3a;
  --navy-2: #12304f;
  --ink: #14233a;
  --soft: #5a6b80;
  --line: #d9e0e8;
  --fog: #f4f6f9;
  --white: #fff;
  --on-navy: #b8c6d8;
  --display: "Instrument Serif", Georgia, "Times New Roman", serif;
  --body: "Instrument Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --pad: clamp(1.25rem, 5vw, 4rem);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
body {
  margin: 0; font-family: var(--body); font-size: 1.0625rem; line-height: 1.65;
  color: var(--ink); background: var(--white); -webkit-font-smoothing: antialiased;
}
h1, h2, h3 { font-family: var(--display); font-weight: 400; margin: 0; line-height: 1.08; letter-spacing: -0.01em; }
p { margin: 0 0 1em; }
a { color: inherit; }
:focus-visible { outline: 2px solid #5b8bd6; outline-offset: 3px; }

/* En-tête */
.top {
  position: sticky; top: 0; z-index: 10; display: flex; align-items: center; gap: 2rem;
  padding: .9rem var(--pad); background: rgba(255,255,255,.94); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: .8rem; text-decoration: none; color: var(--navy); }
.brand img { display: block; }
.brand span { font-weight: 600; letter-spacing: .28em; font-size: .9rem; }
.top nav { display: flex; gap: 2rem; margin-left: auto; }
.top nav a { text-decoration: none; font-size: .95rem; color: var(--soft); }
.top nav a:hover { color: var(--navy); }
.tel { text-decoration: none; font-weight: 600; color: var(--navy); font-size: .95rem; }

/* Boutons */
.btn {
  display: inline-block; text-decoration: none; cursor: pointer; font: inherit; font-size: .95rem; font-weight: 600;
  letter-spacing: .04em; padding: .95rem 1.8rem; border: 1px solid transparent; border-radius: 2px;
  transition: background-color .2s, color .2s, border-color .2s;
}
.btn-light { background: var(--white); color: var(--navy); }
.btn-light:hover { background: var(--fog); }
.btn-line { border-color: rgba(255,255,255,.45); color: var(--white); }
.btn-line:hover { border-color: var(--white); background: rgba(255,255,255,.08); }

/* Accueil */
.hero { background: var(--navy); color: var(--white); }
.hero-inner {
  max-width: 1240px; margin: 0 auto; padding: clamp(4rem, 10vw, 8.5rem) var(--pad);
  display: grid; grid-template-columns: 1.3fr .7fr; gap: 3rem; align-items: center;
}
.eyebrow { font-size: .8rem; letter-spacing: .22em; text-transform: uppercase; color: var(--on-navy); margin-bottom: 1.5rem; }
.hero h1 { font-size: clamp(2.6rem, 6vw, 5rem); }
.lead { font-size: 1.15rem; color: var(--on-navy); max-width: 44ch; margin: 1.75rem 0 2.25rem; }
.cta-row { display: flex; flex-wrap: wrap; gap: 1rem; }
.mono { justify-self: center; width: min(100%, 300px); aspect-ratio: 1; background: var(--white); display: grid; place-items: center; border-radius: 2px; box-shadow: 0 0 0 10px rgba(255,255,255,.08); opacity: 0; animation: appear 1.2s ease .3s forwards; }
.mono img { width: 173px; max-width: 70%; height: auto; display: block; }
@keyframes appear { to { opacity: 1; } }

/* Blocs */
.block { max-width: 1240px; margin: 0 auto; padding: clamp(4rem, 9vw, 7.5rem) var(--pad); }
.kicker { font-size: .78rem; letter-spacing: .22em; text-transform: uppercase; color: var(--soft); margin-bottom: 1.1rem; }
.kicker.light { color: var(--on-navy); }
.block h2, .approche h2, .contact h2 { font-size: clamp(2rem, 4.2vw, 3.3rem); max-width: 22ch; }

.services { list-style: none; padding: 0; margin: 3.5rem 0 0; display: grid; grid-template-columns: repeat(2, 1fr); column-gap: 4rem; border-top: 1px solid var(--navy); }
.services li { padding: 1.6rem 0; border-bottom: 1px solid var(--line); display: grid; grid-template-columns: 11rem 1fr; gap: 1rem; align-items: baseline; }
.services h3 { font-size: 1.7rem; color: var(--navy); }
.services p { margin: 0; color: var(--soft); font-size: 1rem; }

.approche { background: var(--navy); color: var(--white); }
.approche-inner { max-width: 1240px; margin: 0 auto; padding: clamp(4rem, 9vw, 7rem) var(--pad); }
.pillars { display: grid; grid-template-columns: repeat(3, 1fr); gap: 3rem; margin-top: 3.5rem; }
.pillars > div { border-top: 1px solid rgba(255,255,255,.3); padding-top: 1.25rem; }
.pillars h3 { font-size: 1.6rem; margin-bottom: .6rem; }
.pillars p { color: var(--on-navy); margin: 0; font-size: 1rem; }

.zone { display: grid; grid-template-columns: 1.1fr .9fr; gap: 4rem; align-items: start; }
.zone h2 { margin-bottom: 1.5rem; }
.zone p { color: var(--soft); }
.towns { list-style: none; padding: 0; margin: 2.2rem 0 0; border-top: 1px solid var(--navy); }
.towns li { font-family: var(--display); font-size: 1.7rem; padding: .7rem 0; border-bottom: 1px solid var(--line); color: var(--navy); }
.towns li.more { font-family: var(--body); font-size: 1rem; color: var(--soft); }

.contact { background: var(--navy); color: var(--white); }
.contact-inner { max-width: 1240px; margin: 0 auto; padding: clamp(4rem, 9vw, 7rem) var(--pad); display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: start; }
.contact h2 { margin-bottom: 1.25rem; }
.contact p { color: var(--on-navy); }
.lines { display: grid; gap: .3rem; margin-top: 2rem; }
.lines a { font-family: var(--display); font-size: 1.9rem; text-decoration: none; color: var(--white); width: fit-content; border-bottom: 1px solid rgba(255,255,255,.3); }
.lines a:hover { border-color: var(--white); }
.form { display: grid; gap: 1.1rem; }
.form label { display: grid; gap: .4rem; font-size: .85rem; letter-spacing: .08em; text-transform: uppercase; color: var(--on-navy); }
.form input, .form textarea {
  font: inherit; font-size: 1rem; text-transform: none; letter-spacing: 0; color: var(--white);
  background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.25); border-radius: 2px; padding: .85rem 1rem;
}
.form input::placeholder, .form textarea::placeholder { color: #7f93ab; }
.form input:focus, .form textarea:focus { outline: 2px solid #5b8bd6; outline-offset: 1px; border-color: transparent; }
.form .btn { justify-self: start; margin-top: .5rem; }

.foot { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 1rem; padding: 1.75rem var(--pad); font-size: .9rem; color: var(--soft); }
.foot p { margin: 0; }

.call-fab { display: none; }

.reveal { opacity: 0; transform: translateY(14px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }

@media (max-width: 960px) {
  .top nav { display: none; }
  .tel { margin-left: auto; }
  .hero-inner { grid-template-columns: 1fr; }
  .mono { width: 120px; justify-self: start; order: -1; }
  .services { grid-template-columns: 1fr; }
  .pillars { grid-template-columns: 1fr; gap: 2rem; }
  .zone, .contact-inner { grid-template-columns: 1fr; gap: 2.5rem; }
}
@media (max-width: 560px) {
  .services li { grid-template-columns: 1fr; gap: .3rem; }
  .tel { display: none; }
  .call-fab {
    display: block; position: fixed; right: 1rem; bottom: 1rem; z-index: 20; background: var(--navy); color: var(--white);
    text-decoration: none; font-weight: 600; letter-spacing: .04em; padding: .9rem 1.6rem; border-radius: 2px;
    border: 1px solid rgba(255,255,255,.4); box-shadow: 0 8px 20px rgba(11,31,58,.35);
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .mono { animation: none; opacity: 1; }
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* Galerie */
.gallery { list-style: none; padding: 0; margin: 3.5rem 0 0; display: grid; grid-template-columns: repeat(6, 1fr); gap: 1rem; }
.gallery li { grid-column: span 2; }
.gallery li:nth-child(10) { grid-column: 2 / span 2; }
.gallery li:nth-child(11) { grid-column: 4 / span 2; }
.shot { display: block; width: 100%; aspect-ratio: 3 / 4; padding: 0; border: 0; background: var(--fog); cursor: zoom-in; overflow: hidden; border-radius: 2px; }
.shot img { display: block; width: 100%; height: 100%; object-fit: cover; transition: transform .6s ease; }
.shot:hover img { transform: scale(1.03); }

.lightbox { border: 0; padding: 0; background: transparent; max-width: 100vw; max-height: 100vh; width: 100vw; height: 100vh; }
.lightbox::backdrop { background: rgba(7, 18, 34, .94); }
.lightbox[open] { display: grid; place-items: center; }
.lightbox img { max-width: min(92vw, 900px); max-height: 90vh; width: auto; height: auto; display: block; }
.lightbox button { position: absolute; background: none; border: 0; color: var(--white); font-size: 2.6rem; line-height: 1; cursor: pointer; padding: .5rem 1rem; opacity: .8; }
.lightbox button:hover { opacity: 1; }
.lb-close { top: .5rem; right: .75rem; }
.lb-prev { left: .5rem; top: 50%; transform: translateY(-50%); }
.lb-next { right: .5rem; top: 50%; transform: translateY(-50%); }

@media (max-width: 960px) {
  .gallery { grid-template-columns: repeat(4, 1fr); }
  .gallery li:nth-child(10) { grid-column: span 2; }
  .gallery li:nth-child(11) { grid-column: 2 / span 2; }
}
@media (max-width: 560px) { .gallery { gap: .6rem; } }

/* Formulaire : état d'envoi */
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-status { margin: .25rem 0 0; min-height: 1.5em; font-size: .98rem; color: var(--on-navy); }
.form-status.ok { color: #9fe0b5; }
.form-status.err { color: #ffb4a8; }
.form .btn[disabled] { opacity: .6; cursor: progress; }