/* ==========================================================================
   MTNA — feuille de style publique
   Palette : vert sapin profond, vert menthe lumineux
   ========================================================================== */
:root {
  --bg: #06140F;
  --bg-2: #0A1D16;
  --surface: #0F2A20;
  --surface-2: #143428;
  --line: rgba(170, 225, 197, .13);
  --line-strong: rgba(170, 225, 197, .26);
  --text: #E7F3EC;
  --muted: #8FA99B;
  --dim: #5F7A6C;
  --green: #3DD68C;
  --green-soft: #7CF0B8;
  --green-deep: #1F7A55;
  --danger: #FF8A7A;

  --font-display: 'Bricolage Grotesque Variable', 'Bricolage Grotesque', ui-sans-serif, system-ui, sans-serif;
  --font-body: 'Figtree Variable', 'Figtree', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', sans-serif;

  --wrap: 1180px;
  --pad: clamp(1.25rem, 4vw, 2.5rem);
  --ease: cubic-bezier(.2, .7, .1, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 88px; }
body {
  margin: 0;
  background:
    radial-gradient(1200px 700px at 85% -10%, rgba(61, 214, 140, .10), transparent 60%),
    var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
h1, h2, h3 { font-family: var(--font-display); font-weight: 650; line-height: 1.08; letter-spacing: -.02em; margin: 0; text-wrap: balance; }
p { margin: 0 0 1em; }
::selection { background: var(--green); color: var(--bg); }
:focus-visible { outline: 2px solid var(--green-soft); outline-offset: 3px; border-radius: 6px; }

.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: 1rem; top: -4rem; z-index: 100; background: var(--green); color: var(--bg); padding: .6rem 1rem; border-radius: 999px; font-weight: 600; }
.skip:focus { top: 1rem; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 var(--pad); }
.wrap--narrow { max-width: 760px; }

/* ---------- Boutons et liens ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  padding: .9rem 1.5rem; border-radius: 999px; border: 1px solid transparent;
  background: var(--green); color: #04110B;
  font: 600 1rem/1 var(--font-body); text-decoration: none; cursor: pointer;
  transition: background .25s var(--ease), transform .25s var(--ease), box-shadow .25s var(--ease);
}
.btn:hover { background: var(--green-soft); box-shadow: 0 8px 30px -8px rgba(61, 214, 140, .55); }
.btn:active { transform: scale(.97); }
.btn--ghost { background: transparent; color: var(--text); border-color: var(--line-strong); }
.btn--ghost:hover { background: rgba(170, 225, 197, .08); box-shadow: none; }
.btn--small { padding: .6rem 1.1rem; font-size: .95rem; }

.link { color: var(--green); font-weight: 600; text-decoration: none; background: linear-gradient(currentColor, currentColor) 0 100% / 0 1px no-repeat; transition: background-size .3s var(--ease); }
.link:hover { background-size: 100% 1px; }
.back { display: inline-block; margin-bottom: 2rem; color: var(--muted); text-decoration: none; font-size: .95rem; }
.back::before { content: '‹ '; }
.back:hover { color: var(--text); }

/* ---------- Navigation ---------- */
.nav { position: fixed; inset: 0 0 auto; z-index: 50; transition: background .35s var(--ease), border-color .35s var(--ease), backdrop-filter .35s; border-bottom: 1px solid transparent; }
.nav.is-scrolled { background: rgba(6, 20, 15, .72); backdrop-filter: saturate(160%) blur(18px); -webkit-backdrop-filter: saturate(160%) blur(18px); border-color: var(--line); }
.nav__inner { max-width: var(--wrap); margin: 0 auto; padding: 1rem var(--pad); display: flex; align-items: center; justify-content: space-between; gap: 2rem; }
.nav__links { display: flex; align-items: center; gap: 1.75rem; }
.nav__links a:not(.btn) { color: var(--muted); text-decoration: none; font-size: .98rem; transition: color .2s; }
.nav__links a:not(.btn):hover, .nav__links a[aria-current] { color: var(--text); }
.nav__toggle { display: none; }

.brand { display: inline-flex; align-items: center; gap: .6rem; text-decoration: none; color: var(--text); }
.brand__mark { width: 34px; height: 34px; color: var(--green); }
.brand__word { font: 750 1.3rem/1 var(--font-display); letter-spacing: .02em; }

@media (max-width: 860px) {
  .nav__toggle { display: grid; gap: 5px; place-content: center; width: 44px; height: 44px; background: none; border: 1px solid var(--line-strong); border-radius: 12px; cursor: pointer; }
  .nav__toggle span:not(.sr-only) { display: block; width: 18px; height: 2px; background: var(--text); border-radius: 2px; transition: transform .3s var(--ease); }
  .nav__toggle[aria-expanded="true"] span:nth-of-type(2) { transform: translateY(3.5px) rotate(45deg); }
  .nav__toggle[aria-expanded="true"] span:nth-of-type(3) { transform: translateY(-3.5px) rotate(-45deg); }
  .nav__links {
    position: fixed; inset: 72px 0 auto; flex-direction: column; align-items: stretch; gap: 0;
    padding: 1rem var(--pad) 2rem; background: rgba(6, 20, 15, .97); backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--line);
    opacity: 0; visibility: hidden; transform: translateY(-8px); transition: opacity .3s var(--ease), transform .3s var(--ease), visibility .3s;
  }
  .nav__links.is-open { opacity: 1; visibility: visible; transform: none; }
  .nav__links a:not(.btn) { padding: .9rem 0; font-size: 1.15rem; border-bottom: 1px solid var(--line); }
  .nav__links .btn { margin-top: 1.25rem; }
}

/* ---------- Hero ---------- */
.hero { min-height: 100svh; display: grid; align-items: center; padding: 7rem 0 4rem; overflow: hidden; }
.hero__inner { max-width: var(--wrap); margin: 0 auto; padding: 0 var(--pad); display: grid; grid-template-columns: 1.5fr 1fr; align-items: center; gap: 3rem; }
.hero__title { font-size: clamp(2.8rem, 6vw, 5.4rem); font-weight: 700; letter-spacing: -.045em; line-height: .96; margin-bottom: 1.75rem; }
.hero__lead { font-size: clamp(1.1rem, 1.6vw, 1.3rem); color: var(--muted); max-width: 34em; margin-bottom: 2.25rem; }
.hero__actions { display: flex; flex-wrap: wrap; gap: .85rem; }

.hero__visual { position: relative; aspect-ratio: 1; width: 100%; max-width: 520px; justify-self: end; }
.orbit { width: 100%; height: 100%; overflow: visible; }
.orbit__ring circle:first-child { fill: none; stroke: var(--line-strong); stroke-width: 1; }
.orbit__node { fill: var(--green); filter: drop-shadow(0 0 6px rgba(124, 240, 184, .8)); }
.orbit__ring { transform-origin: 200px 200px; animation: spin 38s linear infinite; }
.orbit__ring--2 { animation-duration: 56s; animation-direction: reverse; }
.orbit__ring--3 { animation-duration: 90s; }
.orbit__core { transform-origin: 200px 200px; animation: breathe 6s ease-in-out infinite; }
.orbit__m { fill: none; stroke: var(--text); stroke-width: 7; stroke-linecap: round; stroke-linejoin: round; stroke-dasharray: 320; stroke-dashoffset: 0; }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes breathe { 50% { transform: scale(1.08); opacity: .85; } }

/* Séquence d'arrivée (activée par JS) */
.js .hero__title .w { display: inline-block; opacity: 0; transform: translateY(.45em); filter: blur(10px); transition: opacity 1s var(--ease), transform 1s var(--ease), filter 1s var(--ease); transition-delay: calc(var(--i) * 70ms + 100ms); }
.js .hero.is-in .hero__title .w { opacity: 1; transform: none; filter: none; }
.js .hero__lead, .js .hero__actions { opacity: 0; transform: translateY(16px); transition: opacity 1s var(--ease) .6s, transform 1s var(--ease) .6s; }
.js .hero__actions { transition-delay: .75s; }
.js .hero.is-in .hero__lead, .js .hero.is-in .hero__actions { opacity: 1; transform: none; }
.js .hero__visual { opacity: 0; transform: scale(.92); transition: opacity 1.6s var(--ease) .3s, transform 1.6s var(--ease) .3s; }
.js .hero.is-in .hero__visual { opacity: 1; transform: none; }
.js .orbit__m { stroke-dashoffset: 320; transition: stroke-dashoffset 1.8s var(--ease) .9s; }
.js .hero.is-in .orbit__m { stroke-dashoffset: 0; }

@media (max-width: 860px) {
  .hero { padding-top: 6.5rem; }
  .hero__inner { grid-template-columns: 1fr; }
  .hero__visual { order: -1; max-width: 240px; justify-self: start; margin-bottom: -1rem; }
}

/* ---------- Séquence défilante (le moment fort) ---------- */
.story { height: 320vh; position: relative; }
.story__sticky { position: sticky; top: 0; height: 100svh; display: grid; place-items: center; overflow: hidden; }
.story__ring { position: absolute; width: min(92vmin, 820px); height: auto; transform: rotate(-90deg); }
.story__track { fill: none; stroke: var(--line); stroke-width: .6; }
.story__progress { fill: none; stroke: var(--green); stroke-width: .8; stroke-linecap: round; stroke-dasharray: 339.3; stroke-dashoffset: 339.3; filter: drop-shadow(0 0 3px rgba(61, 214, 140, .7)); }
.story__lines { position: relative; width: min(92vw, 980px); height: 40vh; display: grid; place-items: center; }
.story__line {
  position: absolute; margin: 0; padding: 0 var(--pad); text-align: center;
  font: 700 clamp(2.2rem, 6vw, 5rem)/1.02 var(--font-display); letter-spacing: -.04em; text-wrap: balance;
  opacity: 0; will-change: opacity, transform, filter;
}
html:not(.js) .story { height: auto; }
html:not(.js) .story__sticky { position: static; height: auto; padding: 6rem 0; }
html:not(.js) .story__lines { height: auto; gap: 2rem; }
html:not(.js) .story__line { position: static; opacity: 1; }
html:not(.js) .story__ring { display: none; }

/* ---------- Sections ---------- */
.section { padding: clamp(5rem, 11vw, 9rem) 0; }
.section--alt { background: linear-gradient(180deg, transparent, var(--bg-2) 18%, var(--bg-2) 82%, transparent); }
.section__title { font-size: clamp(2.1rem, 4.4vw, 3.5rem); letter-spacing: -.035em; margin-bottom: clamp(2.5rem, 5vw, 4rem); max-width: 16em; }
.section__head { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; flex-wrap: wrap; }

/* Services : les lignes s'allument quand elles passent au centre de l'écran */
.services { list-style: none; margin: 0; padding: 0; border-bottom: 1px solid var(--line); }
.service { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.3fr); gap: 2rem; padding: 2.25rem 0; border-top: 1px solid var(--line); }
.service__title { font-size: clamp(1.6rem, 3vw, 2.4rem); letter-spacing: -.03em; transition: color .6s var(--ease); }
.service__body p { font-size: 1.12rem; margin: 0; transition: color .6s var(--ease); }
.service__body .service__details { margin-top: .75rem; font-size: .98rem; }
.js .service .service__title, .js .service .service__body p { color: var(--dim); }
.js .service.is-lit .service__title { color: var(--text); }
.js .service.is-lit .service__body p { color: var(--muted); }
.js .service.is-lit .service__body p:first-child { color: var(--text); }
@media (max-width: 720px) { .service { grid-template-columns: 1fr; gap: .75rem; } }

/* Méthode : c'est une vraie séquence, d'où la numérotation */
.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(1.5rem, 3vw, 3rem); counter-reset: none; }
.step { position: relative; padding-top: 1.5rem; border-top: 1px solid var(--line-strong); }
.step__n { display: block; font: 700 3.5rem/1 var(--font-display); color: var(--green); letter-spacing: -.04em; margin-bottom: 1.25rem; }
.step h3 { font-size: 1.45rem; margin-bottom: .6rem; }
.step p { color: var(--muted); margin: 0; }
@media (max-width: 860px) { .steps { grid-template-columns: 1fr; } }

/* Réalisations */
.projects { display: grid; gap: clamp(4rem, 8vw, 7rem); }
.project { display: grid; grid-template-columns: 1.15fr 1fr; gap: clamp(2rem, 5vw, 4.5rem); align-items: center; }
.project--flip .project__media { order: 2; }
.project__media { border-radius: 22px; overflow: hidden; aspect-ratio: 4 / 3; background: var(--surface); border: 1px solid var(--line); }
.project__media img { width: 100%; height: 115%; object-fit: cover; will-change: transform; }
.project__placeholder {
  width: 100%; height: 100%; display: grid; place-items: center;
  background:
    radial-gradient(60% 60% at 30% 25%, rgba(61, 214, 140, .28), transparent 70%),
    linear-gradient(var(--line) 1px, transparent 1px) 0 0 / 32px 32px,
    linear-gradient(90deg, var(--line) 1px, transparent 1px) 0 0 / 32px 32px,
    var(--surface);
}
.project__placeholder span { font: 750 clamp(4rem, 10vw, 7rem)/1 var(--font-display); color: rgba(231, 243, 236, .9); letter-spacing: -.05em; }
.project__text h3 { font-size: clamp(1.6rem, 2.8vw, 2.3rem); letter-spacing: -.03em; margin: .9rem 0 1rem; }
.project__text p { color: var(--muted); font-size: 1.1rem; }
.project__text .link { margin-right: 1.5rem; }
@media (max-width: 860px) { .project { grid-template-columns: 1fr; } .project--flip .project__media { order: 0; } }

.tags { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: .4rem; }
.tags li { font-size: .82rem; color: var(--green-soft); background: rgba(61, 214, 140, .09); border: 1px solid rgba(61, 214, 140, .22); border-radius: 999px; padding: .2rem .7rem; }

/* Articles */
.posts { display: grid; grid-template-columns: repeat(auto-fill, minmax(290px, 1fr)); gap: 1.5rem; }
.post__link { display: flex; flex-direction: column; height: 100%; padding: 1.5rem; border-radius: 20px; border: 1px solid var(--line); background: rgba(15, 42, 32, .5); text-decoration: none; transition: border-color .3s var(--ease), background .3s var(--ease); }
.post__link:hover { border-color: var(--line-strong); background: var(--surface); }
.post__cover { border-radius: 12px; aspect-ratio: 16 / 9; object-fit: cover; margin-bottom: 1.25rem; }
.post time { font-size: .88rem; color: var(--dim); }
.post h3 { font-size: 1.35rem; margin: .5rem 0 .6rem; }
.post p { color: var(--muted); font-size: 1rem; margin: 0; }
.empty { color: var(--muted); }

/* Appel à l'action */
.cta { padding: 0 0 clamp(5rem, 10vw, 8rem); }
.cta__inner {
  padding-top: clamp(3rem, 7vw, 5.5rem); padding-bottom: clamp(3rem, 7vw, 5.5rem);
  border-radius: 32px; text-align: center;
  background: radial-gradient(80% 120% at 50% 0%, rgba(61, 214, 140, .22), transparent 65%), var(--surface);
  border: 1px solid var(--line);
}
.cta h2 { font-size: clamp(2rem, 4.2vw, 3.3rem); letter-spacing: -.035em; max-width: 15em; margin: 0 auto 1.1rem; }
.cta p { color: var(--muted); max-width: 36em; margin: 0 auto 2rem; }

/* ---------- Pages intérieures ---------- */
.page { padding: clamp(8rem, 14vw, 10rem) 0 clamp(4rem, 8vw, 6rem); }
.page--center { min-height: 80vh; display: grid; align-items: center; }
.page__title { font-size: clamp(2.5rem, 6vw, 4.5rem); letter-spacing: -.04em; line-height: 1; margin-bottom: 1.25rem; }
.page__lead { font-size: 1.25rem; color: var(--muted); margin-bottom: 2.5rem; max-width: 36em; }
.page__date { display: block; color: var(--dim); font-size: .95rem; margin-bottom: .75rem; }
.page__cover { border-radius: 22px; margin: 0 0 2.5rem; border: 1px solid var(--line); }

.prose { font-size: 1.1rem; line-height: 1.75; }
.prose h1 { font-size: clamp(2.5rem, 6vw, 4.5rem); }
.prose h2 { font-size: 1.75rem; margin: 2.75rem 0 1rem; letter-spacing: -.025em; }
.prose h3 { font-size: 1.3rem; margin: 2rem 0 .75rem; }
.prose p, .prose li { color: #CFE0D6; }
.prose a { color: var(--green); }
.prose ul, .prose ol { padding-left: 1.25rem; margin: 0 0 1.25em; }
.prose li { margin-bottom: .4em; }
.prose blockquote { margin: 2rem 0; padding: .25rem 0 .25rem 1.5rem; border-left: 3px solid var(--green); color: var(--text); font-size: 1.2rem; }
.prose code { font-size: .9em; background: var(--surface); padding: .15em .4em; border-radius: 6px; }
.prose pre { background: var(--surface); padding: 1.25rem; border-radius: 14px; overflow-x: auto; border: 1px solid var(--line); }
.prose pre code { background: none; padding: 0; }
.prose img { border-radius: 16px; margin: 2rem 0; }
.prose hr { border: 0; border-top: 1px solid var(--line); margin: 3rem 0; }
.prose table { width: 100%; border-collapse: collapse; margin: 1.5rem 0; font-size: 1rem; display: block; overflow-x: auto; }
.prose th, .prose td { text-align: left; padding: .6rem .8rem; border-bottom: 1px solid var(--line); }

.more { list-style: none; padding: 0; margin: 0; border-top: 1px solid var(--line); }
.more li { border-bottom: 1px solid var(--line); }
.more a { display: block; padding: 1.1rem 0; text-decoration: none; font: 600 1.2rem/1.3 var(--font-display); transition: color .2s, padding .3s var(--ease); }
.more a:hover { color: var(--green); padding-left: .5rem; }

/* ---------- Contact et formulaires ---------- */
.contact { display: grid; grid-template-columns: .9fr 1.1fr; gap: clamp(2.5rem, 6vw, 5rem); align-items: start; }
.contact__info { margin: 0; display: grid; gap: 1.25rem; }
.contact__info dt { color: var(--dim); font-size: .9rem; }
.contact__info dd { margin: .1rem 0 0; font-size: 1.1rem; }
.contact__info a { text-decoration: none; }
.contact__info a:hover { color: var(--green); }
@media (max-width: 860px) { .contact { grid-template-columns: 1fr; } }

.form { display: grid; gap: 1.1rem; padding: clamp(1.5rem, 3vw, 2.25rem); background: var(--bg-2); border: 1px solid var(--line); border-radius: 26px; }
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; }
@media (max-width: 560px) { .form__row { grid-template-columns: 1fr; } }
.form label { display: grid; gap: .4rem; font-size: .95rem; color: var(--muted); }
.form label > span[aria-hidden] { color: var(--green); }
.form input:not([type=checkbox]), .form select, .form textarea {
  width: 100%; padding: .85rem 1rem; border-radius: 12px; border: 1px solid var(--line-strong);
  background: var(--bg); color: var(--text); font: inherit; font-size: 1rem; transition: border-color .2s, box-shadow .2s;
}
.form textarea { resize: vertical; min-height: 9rem; }
.form input:focus, .form select:focus, .form textarea:focus { outline: none; border-color: var(--green); box-shadow: 0 0 0 4px rgba(61, 214, 140, .15); }
.form .check { display: flex; gap: .75rem; align-items: flex-start; font-size: .92rem; }
.form .check input { margin-top: .25rem; width: 1.1rem; height: 1.1rem; accent-color: var(--green); flex: none; }
.form .check a { color: var(--green); }
.form .btn { justify-self: start; }
.form__hint { font-size: .85rem; color: var(--dim); margin: 0; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.notice { padding: 1.5rem; border-radius: 18px; border: 1px solid; }
.notice h2 { font-size: 1.5rem; margin-bottom: .5rem; }
.notice ul { margin: .5rem 0 0; padding-left: 1.2rem; }
.notice p:last-child { margin-bottom: 0; }
.notice--ok { border-color: rgba(61, 214, 140, .4); background: rgba(61, 214, 140, .08); padding: 2rem; }
.notice--error { border-color: rgba(255, 138, 122, .4); background: rgba(255, 138, 122, .08); color: #FFD1CA; }
.notice--error p { margin: 0; font-weight: 600; }

/* ---------- Pied de page ---------- */
.foot { border-top: 1px solid var(--line); padding: 4rem 0 2rem; font-size: .95rem; }
.foot__inner { max-width: var(--wrap); margin: 0 auto; padding: 0 var(--pad); display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 2.5rem; }
.foot__brand p { color: var(--muted); margin-top: 1rem; max-width: 24em; }
.foot__col { display: flex; flex-direction: column; gap: .55rem; }
.foot__col h2 { font: 600 .95rem/1.4 var(--font-body); color: var(--text); margin-bottom: .35rem; letter-spacing: 0; }
.foot__col a { color: var(--muted); text-decoration: none; }
.foot__col a:hover { color: var(--green); }
.foot__legal { max-width: var(--wrap); margin: 3rem auto 0; padding: 1.5rem var(--pad) 0; border-top: 1px solid var(--line); color: var(--dim); font-size: .85rem; }
@media (max-width: 860px) { .foot__inner { grid-template-columns: 1fr 1fr; } .foot__brand { grid-column: 1 / -1; } }

/* ---------- Mouvement réduit ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; transition-delay: 0s !important; }
  .story { height: auto; }
  .story__sticky { position: static; height: auto; padding: 6rem 0; }
  .story__lines { height: auto; gap: 2.5rem; }
  .story__line { position: static; opacity: 1 !important; transform: none !important; filter: none !important; }
  .story__ring { display: none; }
}