/* =============================================================================
   Signature 2026 — motion, glow, editorial rhythm (sebastienmot.com)
   Chargé après site.css ; ne touche pas à la logique grille posts.
   ============================================================================= */

:root {
  --sig-electric: #3d8bff;
  --sig-electric-dim: rgba(61, 139, 255, 0.45);
  --sig-magenta: #e838a0;
  --sig-magenta-dim: rgba(232, 56, 160, 0.4);
  --sig-navy: #05080f;
  --sig-surface: #f4f7fa;
  --sig-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --sig-duration: 0.75s;
  --sig-stagger: 0.07s;
}

/* ---------- Hero : mesh animé + profondeur ---------- */
.hero-ambient {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
  border-radius: inherit;
}

.hero-mesh {
  position: absolute;
  inset: -40%;
  background:
    radial-gradient(ellipse 55% 45% at 20% 85%, var(--sig-electric-dim), transparent 58%),
    radial-gradient(ellipse 50% 42% at 88% 78%, var(--sig-magenta-dim), transparent 55%),
    radial-gradient(ellipse 35% 30% at 72% 18%, rgba(61, 139, 255, 0.22), transparent 60%);
  filter: blur(28px);
  opacity: 0.92;
  transform: translate3d(0, 0, 0);
}

.hero-grain {
  position: absolute;
  inset: 0;
  opacity: 0.35;
  mix-blend-mode: soft-light;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.55'/%3E%3C/svg%3E");
}

@media (prefers-reduced-motion: no-preference) {
  .hero-mesh {
    animation: sig-mesh-drift 22s var(--sig-ease) infinite alternate;
  }
}

@keyframes sig-mesh-drift {
  0% {
    transform: translate3d(-2%, 1%, 0) scale(1.02);
  }
  100% {
    transform: translate3d(3%, -2%, 0) scale(1.06);
  }
}

.hero-sticky {
  position: relative;
  z-index: 1;
}

.hero-copy {
  z-index: 2;
}

.portrait-stage {
  z-index: 2;
}

.arch {
  transition: transform 0.55s var(--sig-ease), box-shadow 0.55s var(--sig-ease);
}

@media (hover: hover) and (prefers-reduced-motion: no-preference) {
  .hero-sticky:hover .arch {
    transform: translateY(-4px) scale(1.01);
    box-shadow:
      0 40px 80px -32px rgba(0, 0, 0, 0.75),
      -20px 28px 56px -28px var(--sig-electric-dim),
      20px 32px 56px -28px var(--sig-magenta-dim) !important;
  }
}

/* Lignes décoratives : plus fines, moins « template » */
.hero-sticky::before,
.hero-sticky::after {
  width: 1px !important;
  opacity: 0.35 !important;
  background: linear-gradient(180deg, transparent, var(--sig-electric) 45%, transparent) !important;
}

.hero-sticky::after {
  background: linear-gradient(180deg, transparent, var(--sig-magenta) 55%, transparent) !important;
}

/* Entrée typographique hero */
.js .hero h1 .headline-line > span {
  opacity: 0;
  transform: translate3d(0, 1.1em, 0);
}

.js.is-loaded .hero h1 .headline-line > span {
  opacity: 1;
  transform: none;
  transition:
    opacity 0.85s var(--sig-ease),
    transform 0.95s var(--sig-ease);
}

.js.is-loaded .hero h1 .headline-line:nth-child(2) > span {
  transition-delay: calc(var(--sig-stagger) * 2);
}

.js .hero-kicker,
.js .hero-summary,
.js .hero-actions {
  opacity: 0;
  transform: translate3d(0, 12px, 0);
}

.js.is-loaded .hero-kicker {
  opacity: 1;
  transform: none;
  transition: opacity 0.7s var(--sig-ease) 0.12s, transform 0.8s var(--sig-ease) 0.12s;
}

.js.is-loaded .hero-summary {
  opacity: 1;
  transform: none;
  transition: opacity 0.7s var(--sig-ease) 0.2s, transform 0.8s var(--sig-ease) 0.2s;
}

.js.is-loaded .hero-actions {
  opacity: 1;
  transform: none;
  transition: opacity 0.7s var(--sig-ease) 0.28s, transform 0.8s var(--sig-ease) 0.28s;
}

/* Boutons hero : micro-interaction */
.hero-actions .button-primary {
  box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.4);
  transition:
    transform 0.25s var(--sig-ease),
    box-shadow 0.35s var(--sig-ease),
    background 0.2s ease !important;
}

@media (hover: hover) {
  .hero-actions .button-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px -8px rgba(255, 255, 255, 0.35);
  }

  .hero-actions .text-link:hover {
    background: rgba(255, 255, 255, 0.06) !important;
  }
}

/* ---------- Nav : tonalité claire / sombre ---------- */
html[data-header-tone="light"] .site-header {
  background: rgba(255, 255, 255, 0.82) !important;
  border-color: rgba(3, 13, 27, 0.08) !important;
  box-shadow: 0 10px 40px -18px rgba(3, 13, 27, 0.18) !important;
}

html[data-header-tone="light"] .site-header .brand,
html[data-header-tone="light"] .site-header nav a {
  color: var(--ink) !important;
}

html[data-header-tone="light"] .site-header nav a.is-active {
  background: var(--sig-surface) !important;
  color: var(--ink) !important;
}

html[data-header-tone="light"] .nav-contact {
  background: var(--ink) !important;
  color: #fff !important;
}

html[data-header-tone="light"] .nav-menu summary {
  background: var(--sig-surface);
  border-color: rgba(3, 13, 27, 0.1);
}

html[data-header-tone="light"] .nav-menu summary span {
  background: var(--ink);
}

html[data-header-tone="dark"] .site-header {
  background: rgba(8, 10, 16, 0.78) !important;
}

/* Fonds de section : identité affiche sombre → brand-2026.css (chargé après) */

/* ---------- Cartes posts : hover signature ---------- */
.post {
  position: relative;
  isolation: isolate;
  overflow: hidden;
}

.post::before {
  position: absolute;
  z-index: 3;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, var(--sig-electric), var(--sig-magenta));
  -webkit-mask:
    linear-gradient(#fff 0 0) content-box,
    linear-gradient(#fff 0 0);
  mask:
    linear-gradient(#fff 0 0) content-box,
    linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s var(--sig-ease);
}

.post::after {
  position: absolute;
  z-index: 2;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(
    125deg,
    rgba(61, 139, 255, 0.08),
    transparent 42%,
    rgba(232, 56, 160, 0.06)
  );
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s var(--sig-ease);
}

@media (hover: hover) {
  .post:hover::before,
  .post:hover::after {
    opacity: 1;
  }

  .post:hover {
    transform: translateY(-5px) !important;
    box-shadow:
      0 28px 56px -24px rgba(3, 13, 27, 0.28),
      0 0 0 1px rgba(61, 139, 255, 0.12) !important;
  }
}

.post .media {
  position: relative;
  overflow: hidden;
}

.post .media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(5, 8, 15, 0.35));
  opacity: 0;
  transition: opacity 0.4s var(--sig-ease);
  pointer-events: none;
}

@media (hover: hover) {
  .post:hover .media::after {
    opacity: 1;
  }

  .post:hover .media img {
    transform: scale(1.045) !important;
  }
}

.feat {
  transition: transform 0.45s var(--sig-ease), box-shadow 0.45s var(--sig-ease);
}

@media (hover: hover) {
  .feat:hover {
    transform: translateY(-3px);
    box-shadow: 0 32px 64px -28px rgba(3, 13, 27, 0.35) !important;
  }
}

/* ---------- Page liste posts & article : bandeau ---------- */
.page-posts-list,
.page-post:not(.page-404) {
  padding-top: 0 !important;
}

.sig-page-hero {
  margin: 0 calc(-1 * var(--gutter)) clamp(32px, 4vw, 48px);
  padding: clamp(40px, 5vw, 64px) var(--gutter);
  color: #eef2f7;
  text-align: center;
  background:
    radial-gradient(50% 80% at 0% 100%, rgba(61, 139, 255, 0.45), transparent 70%),
    radial-gradient(45% 75% at 100% 100%, rgba(232, 56, 160, 0.38), transparent 68%),
    var(--sig-navy);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.sig-page-hero .kicker {
  color: #8fa3bc !important;
}

.sig-page-hero .h2,
.sig-page-hero h1 {
  margin: 0 auto;
  max-width: 20ch;
  color: #fff !important;
  font-family: var(--brand-font, var(--sans)) !important;
  font-weight: 800 !important;
  text-transform: uppercase;
  letter-spacing: -0.01em;
  text-wrap: balance;
}

.sig-page-hero .lead {
  margin: 14px auto 0;
  max-width: 52ch;
  color: rgba(238, 242, 247, 0.78);
}

.page-404 .sig-page-hero .h2,
.page-404 .sig-page-hero h1 {
  max-width: none;
}

.page-post .post-single-head h1 {
  font-family: var(--brand-font, var(--sans)) !important;
  font-weight: 800 !important;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

.page-post .post-single-media {
  box-shadow: 0 24px 48px -28px rgba(3, 13, 27, 0.2);
}

/* Archive cards */
.archive-card {
  position: relative;
  transition:
    transform 0.4s var(--sig-ease),
    box-shadow 0.4s var(--sig-ease),
    border-color 0.25s ease !important;
}

@media (hover: hover) {
  .archive-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 22px 48px -28px rgba(3, 13, 27, 0.22) !important;
  }
}

/* ---------- Scroll reveal ---------- */
/* Contenu toujours visible ; animation légère uniquement à l’entrée */
.has-sig-motion .sig-reveal {
  opacity: 1;
  transform: none;
  transition: transform var(--sig-duration) var(--sig-ease);
  transition-delay: var(--sig-delay, 0ms);
}

.has-sig-motion .sig-reveal.is-in {
  transform: none;
}

/* ---------- Footer : ligne lumineuse ---------- */
.site-footer {
  position: relative;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 10%;
  right: 10%;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    var(--sig-electric-dim),
    var(--sig-magenta-dim),
    transparent
  );
  opacity: 0.85;
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  .hero-mesh {
    animation: none !important;
  }

  .js .hero h1 .headline-line > span,
  .js .hero-kicker,
  .js .hero-summary,
  .js .hero-actions,
  .has-sig-motion .sig-reveal {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }

  .post:hover,
  .archive-card:hover,
  .feat:hover,
  .hero-sticky:hover .arch {
    transform: none !important;
  }
}