/* LUMEN-CORE - site de vente. Noir et ivoire, l'orange de l'application en touche rare. */
:root {
  --noir: #0b0b0c;
  --noir-2: #141416;
  --ivoire: #f4efe6;
  --ivoire-2: #d9d3c8;
  --gris: #8d877e;
  --ligne: rgba(244, 239, 230, 0.13);
  --or: #f97316;
  --or-doux: rgba(249, 115, 22, 0.14);
  --serif: "Cormorant Garamond", "Times New Roman", serif;
  --sans: "Jost", "Helvetica Neue", Arial, sans-serif;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--noir);
  color: var(--ivoire);
  font-family: var(--sans);
  font-weight: 300;
  font-size: 17px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
::selection { background: var(--or); color: var(--noir); }

.wrap { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 28px; }

/* ---- typographie ---- */
.eyebrow {
  font-family: var(--sans);
  font-size: 11.5px;
  font-weight: 400;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--gris);
}
.eyebrow .dot { color: var(--or); }
h1, h2, h3 { font-family: var(--serif); font-weight: 300; margin: 0; letter-spacing: -0.01em; }
h1 { font-size: clamp(48px, 8.2vw, 116px); line-height: 0.98; }
h2 { font-size: clamp(36px, 5vw, 64px); line-height: 1.05; }
h3 { font-size: clamp(24px, 2.6vw, 32px); line-height: 1.15; }
em, .it { font-style: italic; }
.lead { font-size: clamp(17px, 1.6vw, 20px); color: var(--ivoire-2); max-width: 640px; }
.muted { color: var(--gris); }
.or { color: var(--or); }

/* ---- boutons ---- */
.btn {
  display: inline-flex; align-items: center; gap: 12px;
  padding: 16px 30px;
  font-family: var(--sans); font-size: 12px; font-weight: 400;
  letter-spacing: 0.24em; text-transform: uppercase;
  border: 1px solid var(--ivoire);
  color: var(--noir); background: var(--ivoire);
  transition: background .35s, color .35s, border-color .35s;
  cursor: pointer;
}
.btn:hover { background: var(--or); border-color: var(--or); color: var(--noir); }
.btn.ghost { background: transparent; color: var(--ivoire); }
.btn.ghost:hover { background: transparent; color: var(--or); border-color: var(--or); }
.btn .arrow { transition: transform .35s; }
.btn:hover .arrow { transform: translateX(4px); }

/* ---- en-tete ---- */
header.top {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  transition: background .4s, border-color .4s;
  border-bottom: 1px solid transparent;
}
header.top.solid { background: rgba(11, 11, 12, 0.88); backdrop-filter: blur(14px); border-color: var(--ligne); }
header.top .bar { display: flex; align-items: center; justify-content: space-between; height: 84px; }
.logo { display: flex; align-items: center; gap: 12px; font-family: var(--serif); font-size: 22px; letter-spacing: 0.34em; }
.logo svg { width: 22px; height: 22px; color: var(--or); }
.logo .tiret { color: var(--or); letter-spacing: 0; margin: 0 2px; }
nav.menu { display: flex; align-items: center; gap: 34px; }
nav.menu a { font-size: 11.5px; letter-spacing: 0.24em; text-transform: uppercase; color: var(--ivoire-2); transition: color .3s; }
nav.menu a:hover { color: var(--or); }
nav.menu .btn { padding: 11px 20px; font-size: 11px; }
.burger { display: none; background: none; border: 0; color: var(--ivoire); cursor: pointer; padding: 8px; }

/* ---- ouverture ---- */
.hero {
  position: relative; min-height: 100vh;
  display: flex; flex-direction: column; justify-content: center;
  padding: 150px 0 80px; overflow: hidden;
}
.hero::before {
  content: ""; position: absolute; width: 900px; height: 900px; right: -260px; top: -200px;
  background: radial-gradient(circle, rgba(249, 115, 22, 0.20) 0%, rgba(249, 115, 22, 0.05) 35%, transparent 65%);
  pointer-events: none;
}
.hero .eyebrow { margin-bottom: 34px; }
.hero h1 { max-width: 980px; }
.hero h1 em { color: var(--or); }
.hero .lead { margin: 38px 0 48px; }
.hero .actions { display: flex; flex-wrap: wrap; gap: 16px; }
.hero .facts { display: flex; flex-wrap: wrap; gap: 46px; margin-top: 90px; padding-top: 32px; border-top: 1px solid var(--ligne); }
.hero .facts div { min-width: 150px; }
.hero .facts strong { display: block; font-family: var(--serif); font-weight: 300; font-size: 40px; line-height: 1; margin-bottom: 8px; }
.hero .facts span { font-size: 12px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--gris); }

/* ---- capture d'ecran encadree ---- */
.frame {
  position: relative; border: 1px solid var(--ligne); padding: 12px; background: var(--noir-2);
  box-shadow: 0 60px 120px -40px rgba(0, 0, 0, 0.9), 0 0 0 1px rgba(255, 255, 255, 0.02);
}
.frame img { width: 100%; height: auto; }
.frame .legend { position: absolute; left: 12px; bottom: -34px; font-size: 11px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--gris); }

/* ---- sections ---- */
section { padding: 140px 0; position: relative; }
section.line { border-top: 1px solid var(--ligne); }
.section-head { display: grid; grid-template-columns: 1fr 1.2fr; gap: 60px; align-items: end; margin-bottom: 80px; }
.section-head .lead { margin: 0; }

/* quatre gestes */
.gestes { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--ligne); }
.geste { padding: 46px 30px 10px 0; border-right: 1px solid var(--ligne); margin-right: 30px; }
.geste:last-child { border-right: 0; margin-right: 0; }
.geste .num { font-family: var(--serif); font-style: italic; font-size: 20px; color: var(--or); }
.geste h3 { margin: 18px 0 14px; }
.geste p { color: var(--ivoire-2); font-size: 15.5px; margin: 0; }

/* vitrines alternees */
.vitrine { display: grid; grid-template-columns: 1fr 1.35fr; gap: 80px; align-items: center; margin-bottom: 170px; }
.vitrine:last-child { margin-bottom: 0; }
.vitrine.inverse { grid-template-columns: 1.35fr 1fr; }
.vitrine.inverse .texte { order: 2; }
.vitrine .texte .eyebrow { margin-bottom: 22px; }
.vitrine .texte h2 { margin-bottom: 26px; }
.vitrine ul { list-style: none; padding: 0; margin: 30px 0 0; }
.vitrine li { padding: 15px 0; border-top: 1px solid var(--ligne); color: var(--ivoire-2); font-size: 15.5px; display: flex; gap: 16px; }
.vitrine li::before { content: "—"; color: var(--or); }

/* manifeste */
.manifeste { text-align: center; padding: 170px 0; }
.manifeste blockquote { margin: 0 auto; max-width: 940px; font-family: var(--serif); font-weight: 300; font-style: italic; font-size: clamp(30px, 4.2vw, 54px); line-height: 1.18; }
.manifeste blockquote .or { font-style: normal; }
.manifeste .eyebrow { margin-top: 40px; }

/* metier luminaire */
.metier { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--ligne); border: 1px solid var(--ligne); }
.metier > div { background: var(--noir); padding: 50px 38px; }
.metier .ic { width: 34px; height: 34px; color: var(--or); margin-bottom: 28px; }
.metier h3 { font-size: 26px; margin-bottom: 14px; }
.metier p { margin: 0; color: var(--ivoire-2); font-size: 15.5px; }

/* exigences */
.exigences { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 80px; }
.exigence { padding: 34px 0; border-top: 1px solid var(--ligne); display: grid; grid-template-columns: 52px 1fr; gap: 10px; }
.exigence .num { font-family: var(--serif); font-style: italic; color: var(--or); font-size: 20px; }
.exigence h3 { font-size: 24px; margin-bottom: 8px; }
.exigence p { margin: 0; color: var(--ivoire-2); font-size: 15.5px; }

/* tarifs */
.tarifs { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.offre { border: 1px solid var(--ligne); padding: 54px 46px; display: flex; flex-direction: column; }
.offre.signature { border-color: rgba(249, 115, 22, 0.55); background: linear-gradient(180deg, var(--or-doux), transparent 60%); }
.offre .nom { font-family: var(--serif); font-size: 34px; }
.offre .prix { font-family: var(--serif); font-weight: 300; font-size: 64px; line-height: 1; margin: 30px 0 6px; }
.offre .prix small { font-family: var(--sans); font-size: 13px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--gris); margin-left: 8px; }
.offre .detail { color: var(--gris); font-size: 14px; margin-bottom: 30px; }
.offre ul { list-style: none; padding: 0; margin: 0 0 40px; flex: 1; }
.offre li { padding: 12px 0; border-top: 1px solid var(--ligne); font-size: 15px; color: var(--ivoire-2); }
.offre li::before { content: "✦"; color: var(--or); margin-right: 14px; font-size: 11px; }
.tarifs-note { margin-top: 30px; font-size: 13.5px; color: var(--gris); text-align: center; }

/* demonstration */
.demo { display: grid; grid-template-columns: 1fr 1.1fr; gap: 90px; }
form.demande { display: grid; grid-template-columns: 1fr 1fr; gap: 26px 24px; }
form.demande .full { grid-column: 1 / -1; }
form.demande label { display: block; font-size: 11px; letter-spacing: 0.22em; text-transform: uppercase; color: var(--gris); margin-bottom: 8px; }
form.demande input, form.demande select, form.demande textarea {
  width: 100%; background: transparent; border: 0; border-bottom: 1px solid var(--ligne);
  color: var(--ivoire); font-family: var(--sans); font-size: 16px; font-weight: 300; padding: 10px 0; outline: none;
  transition: border-color .3s; border-radius: 0;
}
form.demande select option { background: var(--noir-2); }
form.demande input:focus, form.demande select:focus, form.demande textarea:focus { border-color: var(--or); }
form.demande textarea { resize: vertical; min-height: 90px; }
form.demande .pot { position: absolute; left: -9999px; }
.notice { padding: 18px 22px; border: 1px solid var(--ligne); margin-bottom: 30px; font-size: 15px; }
.notice.ok { border-color: rgba(34, 197, 94, 0.5); }
.notice.err { border-color: rgba(239, 68, 68, 0.5); }
.rgpd { font-size: 12.5px; color: var(--gris); }

/* questions */
.faq details { border-top: 1px solid var(--ligne); padding: 26px 0; }
.faq details:last-child { border-bottom: 1px solid var(--ligne); }
.faq summary { cursor: pointer; list-style: none; font-family: var(--serif); font-size: 26px; display: flex; justify-content: space-between; gap: 20px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--or); font-family: var(--sans); font-weight: 300; transition: transform .3s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { color: var(--ivoire-2); margin: 16px 0 0; max-width: 820px; }

/* pied de page */
footer { border-top: 1px solid var(--ligne); padding: 70px 0 50px; }
footer .cols { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 50px; }
footer h4 { font-family: var(--sans); font-weight: 400; font-size: 11px; letter-spacing: 0.24em; text-transform: uppercase; color: var(--gris); margin: 0 0 18px; }
footer a, footer p { display: block; font-size: 14.5px; color: var(--ivoire-2); margin: 0 0 10px; }
footer a:hover { color: var(--or); }
footer .bas { margin-top: 60px; padding-top: 26px; border-top: 1px solid var(--ligne); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 14px; font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--gris); }

/* pages legales */
.legal { padding: 170px 0 110px; }
.legal .wrap { max-width: 860px; }
.legal h1 { font-size: clamp(42px, 6vw, 72px); margin-bottom: 18px; }
.legal h2 { font-size: 30px; margin: 54px 0 16px; }
.legal p, .legal li { color: var(--ivoire-2); font-size: 16px; }
.legal a { color: var(--or); }
.legal .maj { color: var(--gris); font-size: 13px; letter-spacing: 0.16em; text-transform: uppercase; }
.a-completer { color: var(--or); font-style: italic; }

/* apparition douce */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity 1.1s ease, transform 1.1s ease; }
.reveal.vu { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } html { scroll-behavior: auto; } }

/* ---- telephone / tablette ---- */
@media (max-width: 980px) {
  section { padding: 100px 0; }
  .section-head, .vitrine, .vitrine.inverse, .demo { grid-template-columns: 1fr; gap: 44px; }
  .vitrine.inverse .texte { order: 0; }
  .vitrine { margin-bottom: 120px; }
  .gestes { grid-template-columns: 1fr 1fr; }
  .geste { margin-right: 0; padding-right: 24px; border-right: 0; border-bottom: 1px solid var(--ligne); }
  .metier, .tarifs, .exigences { grid-template-columns: 1fr; }
  footer .cols { grid-template-columns: 1fr; gap: 30px; }
  nav.menu { position: fixed; inset: 84px 0 auto 0; flex-direction: column; gap: 26px; padding: 34px 28px 40px; background: rgba(11, 11, 12, 0.97); border-bottom: 1px solid var(--ligne); display: none; }
  nav.menu.ouvert { display: flex; }
  .burger { display: block; }
}
@media (max-width: 600px) {
  .wrap { padding: 0 16px; }
  body { font-size: 16px; }
  .gestes { grid-template-columns: 1fr; }
  form.demande { grid-template-columns: 1fr; }
  .offre { padding: 40px 26px; }
  .hero .facts { gap: 30px; }
  .logo { font-size: 18px; letter-spacing: 0.26em; }
}

/* trois offres */
.tarifs.trois { grid-template-columns: repeat(3, 1fr); gap: 22px; }
.tarifs.trois .offre { padding: 46px 34px; }
.tarifs.trois .prix { font-size: 56px; }
@media (max-width: 980px) { .tarifs.trois { grid-template-columns: 1fr; } }