/* Burning Blue · burningblue.fr
   Noir et blanc, sobre, d'après le dossier Advisor. Seul accent : le bleu Burning Blue. */

:root {
  --white: #ffffff;
  --paper: #f7f7f5;
  --ink: #111111;
  --ink-soft: #444444;
  --muted: #8a8a8a;
  --line: #e4e4e2;
  --blue: #3b6fe8;
  --blue-deep: #2f5bd0;

  --font-head: 'Cormorant Garamond', Georgia, serif;
  --font-ui: 'Outfit', 'Helvetica Neue', sans-serif;
  --font-body: 'Inter', 'Helvetica Neue', sans-serif;

  --max-w: 1180px;
  --gutter: clamp(20px, 5vw, 64px);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  background: var(--white);
  color: var(--ink);
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 15px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
figure { margin: 0; }

/* Typo */
h1, h2, h3, .lead { hyphens: none; }
h1, h2, h3 { font-family: var(--font-head); font-weight: 400; line-height: 1.15; color: var(--ink); }
h2 { font-size: clamp(2.1rem, 4vw, 3rem); margin-bottom: 1.4rem; }
h3 { font-size: clamp(1.35rem, 2.2vw, 1.7rem); margin-bottom: .6rem; }
p + p { margin-top: 1em; }
.label {
  font: 500 11px/1 var(--font-ui); letter-spacing: .32em; text-transform: uppercase;
  color: var(--muted); margin-bottom: 1.2rem;
}
.lead {
  font-family: var(--font-head); font-size: 1.35rem; font-weight: 500; line-height: 1.4;
  margin-bottom: 1.6rem; color: var(--ink);
}
.meta { font-size: .85rem; color: var(--ink-soft); }
.spaced { font: 400 12px/1 var(--font-ui); letter-spacing: .6em; text-transform: uppercase; }

/* Nav */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  height: 76px; padding: 0 var(--gutter);
  background: rgba(255,255,255,0); transition: background .3s, border-color .3s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled { background: rgba(255,255,255,.94); backdrop-filter: blur(8px); border-color: var(--line); }
.nav-brand { display: block; text-decoration: none; }
.nav-brand img { height: 46px; width: auto; }
.nav-links { display: flex; gap: 28px; }
.nav-links a {
  font: 400 11px/1 var(--font-ui); letter-spacing: .2em; text-transform: uppercase;
  text-decoration: none; color: var(--ink-soft); transition: color .2s;
}
.nav-links a:hover { color: var(--ink); }
.nav-toggle { display: none; background: none; border: 0; width: 28px; height: 20px; position: relative; cursor: pointer; }
.nav-toggle span { position: absolute; left: 0; right: 0; height: 1px; background: var(--ink); transition: transform .25s; }
.nav-toggle span:first-child { top: 6px; }
.nav-toggle span:last-child { bottom: 6px; }
.nav-toggle[aria-expanded="true"] span:first-child { transform: translateY(3px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:last-child { transform: translateY(-3px) rotate(-45deg); }

/* Hero */
.hero { position: relative; height: 100svh; min-height: 560px; overflow: hidden; background: #f3f3f3; padding: 0; }
.hero picture { display: block; width: 100%; height: 100%; }
.hero img { width: 100%; height: 100%; object-fit: cover; object-position: 50% 78%; }
@media (min-aspect-ratio: 1/1) { .hero img { object-position: 48% 40%; } }
.hero-title { position: absolute; left: 0; right: 0; bottom: max(90px, 11vh); text-align: center; }
.hero h1 { font-size: clamp(2.6rem, 6vw, 4.4rem); font-weight: 400; margin-bottom: 1rem; }
.scroll-cue {
  position: absolute; left: 50%; bottom: 32px; width: 1px; height: 44px; background: var(--ink);
  transform: translateX(-50%); opacity: .5; animation: cue 2.4s ease-in-out infinite;
}
@keyframes cue { 0%,100% { transform: translateX(-50%) scaleY(.4); transform-origin: top; } 50% { transform: translateX(-50%) scaleY(1); transform-origin: top; } }

/* Sections */
section { padding: clamp(80px, 12vw, 160px) var(--gutter); }
.block, .split, .chart { max-width: var(--max-w); margin: 0 auto; }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(40px, 7vw, 110px); align-items: center; }
.split-reverse .split-text { order: 2; }
.split-text { max-width: 470px; text-align: justify; hyphens: auto; }
.split-text h2, .split-text h3, .split-text .lead, .split-text .label { text-align: left; }
.split-media img { width: 100%; aspect-ratio: 1 / 1; object-fit: cover; }

.columns { display: grid; grid-template-columns: 1fr 2fr; gap: clamp(32px, 6vw, 90px); align-items: start; }
.cols-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 36px; text-align: justify; hyphens: auto; }

blockquote { margin-top: 2.4rem; padding-left: 20px; border-left: 1px solid var(--ink); }
blockquote p { font-family: var(--font-head); font-style: italic; font-size: 1.15rem; line-height: 1.5; text-align: left; }
cite { display: block; margin-top: 1rem; font-style: normal; font-size: .82rem; color: var(--ink-soft); }
cite strong { font-weight: 500; color: var(--ink); }

/* Six instants */
.instants { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(28px, 5vw, 72px) clamp(20px, 4vw, 56px); margin-top: clamp(64px, 9vw, 120px); }
.instants img { width: 100%; border-radius: 50%; }
.instants figcaption {
  margin-top: 18px; text-align: center;
  font: 500 10px/1.8 'Courier New', monospace; letter-spacing: .28em; text-transform: none; color: var(--ink);
}

/* Duo images */
.duo { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(14px, 2vw, 24px); margin-top: clamp(40px, 6vw, 72px); }
.duo img { width: 100%; aspect-ratio: 1 / 1; object-fit: cover; }

.contact-line { margin-top: 1.6rem !important; font-weight: 500; font-size: .9rem; }
.contact-line a { text-decoration: none; border-bottom: 1px solid var(--ink); }

/* Cartes */
.chart { text-align: center; }
.chart img { width: min(560px, 100%); margin: 0 auto 28px; }
.chart h3 { margin-bottom: .3rem; }
.chart-inline { margin-top: clamp(64px, 9vw, 110px); }

/* Editions */
.editions { border-top: 1px solid var(--line); }
.edition { margin-top: clamp(56px, 8vw, 96px); }
.edition-head h3 { font-weight: 500; font-size: 1.35rem; margin-bottom: .2rem; }
.edition + .edition { padding-top: clamp(56px, 8vw, 96px); border-top: 1px solid var(--line); }
.cta { margin-top: clamp(72px, 10vw, 120px); text-align: center; }
.cta p { font-family: var(--font-head); font-size: 1.3rem; margin-bottom: 1.6rem; }
.cta.cta-top { margin-top: clamp(20px, 3vw, 32px); text-align: left; }
.cta.cta-top p { margin-bottom: 1.2rem; }
.btn-blue {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 16px 34px; border-radius: 10px;
  background: linear-gradient(135deg, var(--blue), #5b8fff);
  color: var(--white); text-decoration: none;
  font: 600 .95rem/1.2 var(--font-ui); letter-spacing: .03em;
  box-shadow: 0 4px 20px rgba(59,111,232,.35);
  transition: transform .25s, box-shadow .25s;
}
.btn-blue:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(59,111,232,.5); }

/* Galerie */
.gallery { display: grid; grid-template-columns: 1fr 1fr; gap: 0; padding: 0; }
.gallery img { width: 100%; height: 100%; aspect-ratio: 1 / 1; object-fit: cover; }

/* Fin */
.closing .logo { width: 220px; margin: clamp(64px, 9vw, 110px) auto 24px; }
.contact-block { font-size: .88rem; line-height: 2; }
.contact-block a { text-decoration: none; }
.contact-block a:hover { border-bottom: 1px solid var(--ink); }

.footer {
  padding: 28px var(--gutter); border-top: 1px solid var(--line); text-align: center;
  font: 400 10px/1 var(--font-ui); letter-spacing: .22em; text-transform: uppercase; color: var(--muted);
}

/* Apparition */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .9s ease, transform .9s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .scroll-cue { animation: none; }
}

/* Responsive */
@media (max-width: 980px) {
  .nav-toggle { display: block; }
  .nav-links {
    position: fixed; inset: 76px 0 auto 0; flex-direction: column; gap: 0;
    background: var(--white); border-bottom: 1px solid var(--line);
    max-height: 0; overflow: hidden; transition: max-height .35s ease;
  }
  .nav-links.open { max-height: 480px; }
  .nav-links a { padding: 18px var(--gutter); border-top: 1px solid var(--line); }
  .nav:has(.nav-links.open) { background: var(--white); }
}
@media (max-width: 820px) {
  body { font-size: 15px; }
  .split, .columns, .cols-2 { grid-template-columns: 1fr; }
  .split-reverse .split-text { order: 0; }
  .split-text { max-width: none; }
  .split-text, .cols-2 { text-align: left; hyphens: manual; }
  .cols-2 { gap: 0; }
  .cols-2 > div + div { margin-top: 1em; }
  .instants { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 520px) {
  .instants { grid-template-columns: 1fr; padding: 0 8%; }
  .gallery { grid-template-columns: 1fr; }
  .btn-blue { width: 100%; white-space: normal; text-align: center; }
}