/* Mise en page : en-tête, héros, sections, pied de page. */

/* ---------- En-tête ---------- */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 50; height: var(--nav-h);
  border-bottom: 1px solid transparent;
  transition: background-color var(--dur) var(--ease), border-color var(--dur) var(--ease), backdrop-filter var(--dur) var(--ease);
}
.site-header.is-scrolled, .site-header.menu-open {
  background: rgba(10, 10, 15, .78); border-color: var(--border);
  -webkit-backdrop-filter: blur(16px) saturate(1.3); backdrop-filter: blur(16px) saturate(1.3);
}
.site-header.menu-open { background: rgba(10, 10, 15, .97); }
.nav-inner { height: var(--nav-h); display: flex; align-items: center; gap: var(--space-6); }

.brand { display: inline-flex; align-items: center; gap: 10px; min-height: var(--tap); color: var(--text); text-decoration: none; }
.brand-mark { width: 28px; height: 28px; color: var(--accent); flex: none; transition: transform var(--dur-spring) var(--spring); }
.brand:hover .brand-mark { transform: rotate(-8deg) scale(1.08); }
.brand-word { font-weight: 800; font-size: 1.3rem; letter-spacing: .04em; }

.nav-links { margin-left: auto; display: flex; align-items: center; gap: var(--space-8); }
.nav-links a {
  position: relative; display: inline-flex; align-items: center; min-height: var(--tap);
  color: var(--text-2); text-decoration: none; font-size: .95rem; font-weight: 500; transition: color var(--dur) var(--ease);
}
.nav-links a::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 6px; height: 2px; border-radius: 2px; background: var(--accent);
  transform: scaleX(0); transform-origin: left; transition: transform var(--dur) var(--ease);
}
.nav-links a:hover, .nav-links a[aria-current="location"] { color: var(--text); }
.nav-links a:hover::after, .nav-links a[aria-current="location"]::after { transform: scaleX(1); }

.burger {
  display: none; position: relative; width: var(--tap); height: var(--tap); margin-right: -10px;
  background: none; border: 0; border-radius: 50%;
}
.burger-bars { position: absolute; inset: 0; display: grid; place-items: center; }
.burger-bars i { position: absolute; width: 20px; height: 2px; border-radius: 2px; background: var(--text); transition: transform var(--dur) var(--ease); }
.burger-bars i:first-child { transform: translateY(-4px); }
.burger-bars i:last-child { transform: translateY(4px); }
.burger[aria-expanded="true"] .burger-bars i:first-child { transform: rotate(45deg); }
.burger[aria-expanded="true"] .burger-bars i:last-child { transform: rotate(-45deg); }

.menu {
  position: fixed; inset: var(--nav-h) 0 0 0; z-index: 49; display: none;
  background: rgba(10, 10, 15, .97); -webkit-backdrop-filter: blur(16px); backdrop-filter: blur(16px);
  opacity: 0; visibility: hidden; transform: translateY(-8px);
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease), visibility 0s linear var(--dur);
  overflow-y: auto;
}
.menu[data-open="true"] { opacity: 1; visibility: visible; transform: none; transition-delay: 0s; }
.menu-inner { width: min(100% - var(--gutter) * 2, 560px); margin: 0 auto; padding: var(--space-8) 0 calc(var(--space-12) + env(safe-area-inset-bottom, 0px)); display: grid; }
.menu-inner > a:not(.btn) {
  display: flex; align-items: center; min-height: 64px; border-bottom: 1px solid var(--border);
  font: 560 1.9rem/1.1 var(--font-voice); letter-spacing: -.01em; text-decoration: none; color: var(--text);
}
.menu-cta { margin-top: var(--space-8); }

/* ---------- Héros ---------- */
.hero { position: relative; padding-top: calc(var(--nav-h) + clamp(24px, 5vw, 72px)); padding-bottom: clamp(56px, 9vw, 120px); isolation: isolate; }
.hero::before {
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(60% 55% at 78% 38%, rgba(139, 92, 246, .16), transparent 70%),
    radial-gradient(40% 40% at 8% 0%, rgba(124, 58, 237, .10), transparent 70%);
}
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr); align-items: center; gap: clamp(24px, 5vw, 72px); min-height: min(calc(100svh - var(--nav-h) - 80px), 760px); }
.hero-copy { display: grid; justify-items: start; gap: var(--space-6); }

.hero-title { font-size: clamp(2.5rem, 1.6rem + 5.2vw, 5.2rem); line-height: 1.02; letter-spacing: -.028em; font-weight: 540; font-variation-settings: "opsz" 144; }
.hero-title .line { display: block; }
/* L'échelle de ton : la pensée se précise de ligne en ligne, jusqu'au mot qui compte. */
.hero-title .l1 { color: var(--text-3); }
.hero-title .l2 { color: color-mix(in srgb, var(--text) 62%, var(--text-3)); }
.hero-title .l3 { color: var(--text); }
.hero-lead { max-width: 34ch; }

.hero-actions { display: flex; flex-wrap: wrap; gap: var(--space-3); margin-top: var(--space-2); }
.hero-meta { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-5) var(--space-8); margin-top: var(--space-4); padding-top: var(--space-6); border-top: 1px solid var(--border); width: 100%; max-width: 560px; }

/* ---------- La porte ---------- */
.door { position: relative; width: min(100%, 520px); aspect-ratio: 1; justify-self: center; --lx: 0px; --ly: 0px; }
.door > * { position: absolute; pointer-events: none; }
.door-bloom { inset: -22%; background: radial-gradient(closest-side, rgba(139, 92, 246, .46), rgba(139, 92, 246, .14) 55%, transparent 78%); }
.door-floor { left: 12%; right: 12%; bottom: -3%; height: 10%; background: radial-gradient(closest-side, rgba(183, 156, 255, .5), transparent 72%); }
.door-light-wrap { left: 50%; top: 48%; width: 78%; aspect-ratio: 1; transform: translate(calc(-50% + var(--lx)), calc(-50% + var(--ly))); }
.door-light {
  width: 100%; height: 100%; border-radius: 50%;
  background: radial-gradient(closest-side, #ffffff 0%, #f7f2ff 13%, #dccdff 28%, #a47bff 48%, rgba(139, 92, 246, .5) 68%, rgba(139, 92, 246, 0) 100%);
}
.door-bubble { inset: 0; width: 100%; height: 100%; overflow: visible; filter: drop-shadow(0 24px 40px rgba(0, 0, 0, .55)); }
.door-haze {
  left: 50%; top: 48%; width: 62%; aspect-ratio: 1; transform: translate(-50%, -50%); mix-blend-mode: screen;
  background: radial-gradient(closest-side, rgba(255, 255, 255, .3), rgba(196, 176, 255, .22) 36%, rgba(139, 92, 246, .08) 56%, transparent 72%);
}

/* ---------- À propos ---------- */
.about-grid { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: clamp(32px, 7vw, 112px); align-items: start; }
.about-intro { display: grid; gap: var(--space-6); position: sticky; top: calc(var(--nav-h) + 32px); }
.principles { border-bottom: 1px solid var(--border-strong); }
.principle { padding-block: clamp(22px, 3vw, 34px); border-top: 1px solid var(--border-strong); }
.principle dt { font: 560 clamp(1.5rem, 3vw, 2rem)/1.15 var(--font-voice); letter-spacing: -.012em; transition: transform var(--dur-spring) var(--spring), color var(--dur) var(--ease); }
.principle dd { margin-top: var(--space-2); color: var(--text-2); max-width: 46ch; }
.principle:hover dt { transform: translateX(6px); color: var(--accent-light); }

/* ---------- Fonctionnalités ---------- */
.features::before {
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background: radial-gradient(50% 40% at 50% 0%, rgba(139, 92, 246, .10), transparent 70%);
}
.features { isolation: isolate; background: linear-gradient(180deg, transparent, rgba(19, 19, 27, .55) 20%, rgba(19, 19, 27, .55) 80%, transparent); }
.features-head { display: grid; gap: var(--space-5); margin-bottom: clamp(36px, 6vw, 72px); }
.bento { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: clamp(12px, 1.6vw, 20px); }
.t-post, .t-thread { grid-column: span 3; }
.t-react, .t-communities { grid-column: span 3; }
.t-link { grid-column: span 6; }

/* ---------- Liste d'attente ---------- */
.waitlist-panel {
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(28px, 5vw, 72px); align-items: center;
  padding: clamp(28px, 5.5vw, 72px); border-radius: var(--radius-xl); border: 1px solid var(--accent-line);
  background: radial-gradient(70% 110% at 100% 0%, rgba(139, 92, 246, .26), transparent 62%), radial-gradient(60% 80% at 0% 100%, rgba(124, 58, 237, .12), transparent 70%), var(--surface);
}
.waitlist-copy { display: grid; gap: var(--space-5); }
.waitlist .section-title { max-width: 13ch; }

/* ---------- FAQ ---------- */
.faq-grid { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(32px, 7vw, 112px); align-items: start; }
.faq-intro { display: grid; gap: var(--space-5); position: sticky; top: calc(var(--nav-h) + 32px); }
.faq-intro a { color: var(--accent-light); }

/* ---------- Pied de page ---------- */
.site-footer { border-top: 1px solid var(--border); padding-top: clamp(40px, 6vw, 72px); padding-bottom: calc(var(--space-8) + env(safe-area-inset-bottom, 0px)); background: linear-gradient(180deg, transparent, rgba(19, 19, 27, .6)); }
.footer-grid { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr) minmax(0, 1fr); gap: var(--space-8); align-items: start; }
.footer-brand { display: grid; gap: var(--space-3); justify-items: start; }
.footer-brand p { color: var(--text-2); font-family: var(--font-voice); font-size: 1.1rem; max-width: 24ch; }
.footer-links { display: grid; gap: 2px; justify-items: start; }
.footer-links a, .social-list a {
  display: inline-flex; align-items: center; min-height: var(--tap); color: var(--text-2); text-decoration: none; transition: color var(--dur) var(--ease);
}
.footer-links a:hover, .social-list a:hover { color: var(--text); }
.social-list { display: grid; gap: 2px; justify-items: start; }
.social-empty { color: var(--text-3); font-size: .95rem; padding-top: 10px; max-width: 28ch; }
.footer-bottom { margin-top: var(--space-10); padding-top: var(--space-6); border-top: 1px solid var(--border); color: var(--text-3); font-size: .875rem; }

/* ---------- Pages secondaires (confidentialité, conditions, contact) ---------- */
.doc { padding-top: calc(var(--nav-h) + clamp(32px, 6vw, 80px)); padding-bottom: clamp(64px, 10vw, 128px); }
.doc-inner { width: min(100% - var(--gutter) * 2, 720px); margin-inline: auto; }
.doc h1 { font-size: clamp(2.2rem, 6vw, 3.6rem); line-height: 1.05; margin-bottom: var(--space-4); }
.doc .doc-meta { color: var(--text-3); font-size: .95rem; margin-bottom: var(--space-8); }
.doc h2 { font-size: clamp(1.4rem, 3vw, 1.75rem); margin: var(--space-12) 0 var(--space-3); }
.doc p, .doc li { color: var(--text-2); max-width: var(--measure); }
.doc p + p, .doc ul + p { margin-top: var(--space-4); }
.doc ul { display: grid; gap: var(--space-2); padding-left: 1.2em; list-style: disc; margin-top: var(--space-3); }
.doc a { color: var(--accent-light); }
.notice { margin-bottom: var(--space-8); padding: var(--space-4) var(--space-5); border-radius: var(--radius-m); border: 1px solid color-mix(in srgb, var(--warn) 45%, transparent); background: color-mix(in srgb, var(--warn) 9%, transparent); color: var(--text); font-size: .95rem; }
.notice strong { color: var(--warn); }

/* ---------- Adaptation ---------- */
@media (max-width: 959px) {
  .nav-links { display: none; }
  .nav-inner .nav-cta { margin-left: auto; }
  .burger { display: block; }
  .menu { display: block; }
  .hero-grid { grid-template-columns: 1fr; min-height: 0; gap: var(--space-8); }
  .door { order: -1; width: min(62vw, 300px); margin-top: var(--space-4); }
  .about-grid, .faq-grid { grid-template-columns: 1fr; }
  .about-intro, .faq-intro { position: static; }
  .waitlist-panel { grid-template-columns: 1fr; }
  .waitlist .section-title { max-width: 18ch; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .bento { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .t-post, .t-thread, .t-react, .t-communities { grid-column: span 1; }
  .t-link { grid-column: span 2; }
}
@media (max-width: 639px) {
  .nav-inner .nav-cta { display: none; }
  .burger { margin-left: auto; }
  .hero-actions .btn { flex: 1 1 100%; }
  .bento { grid-template-columns: 1fr; }
  .t-post, .t-thread, .t-react, .t-communities, .t-link { grid-column: span 1; }
  .footer-grid { grid-template-columns: 1fr; }
}