/* ==========================================================================
   abonnement.css — Odyssey of AION
   Page: abonnement.php (Accès scientifiques)
   VERSION COMPLETE — Premium / Glass / 4 cartes (2x2) + carte image
   - HERO: image + overlay (moins blanc) + glass dark (texte clair lisible)
   - Section formules: background “matière” + cartes glass visibles + 2x2 égal
   - 4e carte: <article class="sub-card sub-card--image"></article>
   - Two columns (infos pratiques)
   - Reveal animations + prefers-reduced-motion
   ========================================================================== */

/* =========================
   TOKENS
   ========================= */
:root{
  /* Palette */
  --sub-white:#f6f8f7;
  --sub-ice:#e6ecec;
  --sub-ice2:#eef3f4;

  --sub-deep:#1f2a32;
  --sub-ink:#0b1218;

  --sub-accent:#ff5a3c;
  --sub-steel:#7fa4b8;

  /* Layout */
  --sub-max:1180px;
  --sub-pad:22px;
  --sub-r:26px;

  /* Hero image */
  --sub-hero-bg:url("/medias/aion.png");

  /* Motion */
  --ease:cubic-bezier(.2,.7,.2,1);
  --t-fast:.22s;
  --t-med:.35s;
}

@media (max-width:900px){
  :root{ --sub-pad:16px; }
}

/* =========================
   BASE / RESET
   ========================= */
*,*::before,*::after{ box-sizing:border-box; }
html{ overflow-x:hidden; }
body{
  margin:0;
  font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  color:var(--sub-deep);
  background:var(--sub-white);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
img,video{ max-width:100%; height:auto; display:block; }
a{ color:inherit; }
::selection{ background:rgba(255,90,60,.22); }

/* Full-bleed wrapper */
.sub-wrap{
  width:100vw;
  position:relative;
  left:50%;
  margin-left:-50vw;
  overflow:hidden;
}
.sub-container{
  max-width:var(--sub-max);
  margin:0 auto;
  padding:0 var(--sub-pad);
}

/* =========================
   SECTIONS
   ========================= */
.sub-sec{
  padding:96px 0;
  position:relative;
}
@media (max-width:600px){
  .sub-sec{ padding:80px 0; }
}

/* thin divider between sections */
.sub-sec + .sub-sec::before{
  content:"";
  position:absolute;
  top:0; left:0; right:0;
  height:1px;
  background:linear-gradient(90deg, transparent, rgba(31,42,50,.10), transparent);
}

/* alternate section (formules) */
.sub-sec.alt{
  background:
    radial-gradient(1200px 520px at 50% 0%, rgba(127,164,184,.10), transparent 70%),
    linear-gradient(180deg, var(--sub-ice2), var(--sub-white));
  position:relative;
  overflow:hidden;
}

/* “matière” sous les cartes -> rend le glass visible */
.sub-sec.alt::after{
  content:"";
  position:absolute;
  inset:-140px;
  background:
    radial-gradient(900px 520px at 20% 20%, rgba(255,90,60,.10), transparent 65%),
    radial-gradient(1000px 640px at 80% 10%, rgba(127,164,184,.16), transparent 70%),
    radial-gradient(1200px 800px at 50% 90%, rgba(9,15,22,.10), transparent 60%);
  pointer-events:none;
  z-index:0;
}
.sub-sec.alt > .sub-container{
  position:relative;
  z-index:1;
}

/* =========================
   HERO (image + overlay)
   ========================= */
.sub-hero{
  padding:0;
  position:relative;
  overflow:hidden;

  background-image:var(--sub-hero-bg);
  background-size:cover;
  background-position:center;
  background-repeat:no-repeat;
}

/* overlay: moins blanc + vignette sombre (relief) */
.sub-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:
    linear-gradient(180deg,
      rgba(246,248,247,.22) 0%,
      rgba(246,248,247,.08) 45%,
      rgba(246,248,247,.18) 100%
    ),
    radial-gradient(1200px 700px at 50% 60%,
      rgba(9,15,22,.40) 0%,
      rgba(9,15,22,.20) 42%,
      rgba(9,15,22,.06) 70%,
      rgba(9,15,22,0) 100%
    );
  pointer-events:none;
  z-index:1;
}

.sub-heroInner{
  position:relative;
  z-index:2;
  padding:110px 0 90px;
  text-align:center;
}
@media (max-width:900px){
  .sub-heroInner{ padding:96px 0 74px; }
}
@media (max-width:600px){
  .sub-heroInner{ padding:84px 0 60px; }
}

/* HERO glass (dark premium, texte clair) */
.sub-heroGlass{
  max-width:980px;
  margin:0 auto;
  padding:56px 64px;
  border-radius:32px;

  background:rgba(11,18,24,.34);
  border:1px solid rgba(255,255,255,.18);

  backdrop-filter:blur(28px) saturate(1.25);
  -webkit-backdrop-filter:blur(28px) saturate(1.25);

  box-shadow:
    0 40px 110px rgba(0,0,0,.45),
    inset 0 1px 0 rgba(255,255,255,.16);

  position:relative;
  overflow:hidden;
}

/* reflets “verre” */
.sub-heroGlass::before{
  content:"";
  position:absolute;
  inset:0;
  border-radius:inherit;
  background:
    radial-gradient(900px 380px at 30% 0%,
      rgba(255,255,255,.20),
      rgba(255,255,255,.06) 55%,
      transparent 75%
    ),
    linear-gradient(180deg, rgba(255,255,255,.08), transparent 50%);
  pointer-events:none;
}

/* =========================
   TYPO (hero + page)
   ========================= */
.sub-tag{
  font-size:11px;
  letter-spacing:.28em;
  text-transform:uppercase;
  font-weight:900;
  margin:0 0 12px;
}

/* default tag (hors hero) */
.sub-sec .sub-tag{
  color:rgba(127,164,184,.90);
}

/* hero tag */
.sub-heroGlass .sub-tag{
  color:rgba(255,255,255,.68);
}

.sub-h1{
  margin:0 0 18px;
  font-size:clamp(38px,5.6vw,64px);
  font-weight:950;
  letter-spacing:-.02em;
  line-height:1.06;
}

.sub-heroGlass .sub-h1{
  color:rgba(255,255,255,.92);
  text-shadow:0 10px 28px rgba(0,0,0,.45);
}

.sub-subtitle{
  margin:0 auto 22px;
  max-width:860px;
  font-size:20px;
  line-height:1.55;
}
.sub-heroGlass .sub-subtitle{ color:rgba(255,255,255,.78); }
.sub-sec .sub-subtitle{ color:rgba(11,18,24,.72); }

.sub-small{
  margin:0 auto 34px;
  max-width:920px;
  font-size:16.8px;
  line-height:1.75;
}
.sub-heroGlass .sub-small{ color:rgba(255,255,255,.72); }
.sub-sec .sub-small{ color:rgba(11,18,24,.68); }

/* Section title */
.sub-h2{
  margin:0 0 18px;
  font-size:34px;
  font-weight:950;
  letter-spacing:-.01em;
  line-height:1.12;
  color:var(--sub-deep);
}
@media (max-width:600px){
  .sub-h2{ font-size:28px; }
}

/* =========================
   CTA / BUTTONS
   ========================= */
.sub-cta-row{
  display:flex;
  gap:16px;
  justify-content:center;
  flex-wrap:wrap;
}
.sub-cta-row-left{ justify-content:flex-start; }

@media (max-width:600px){
  .sub-cta-row{ gap:12px; }
}

.sub-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:13px 22px;
  border-radius:999px;

  font-size:14px;
  font-weight:950;
  letter-spacing:.01em;
  text-decoration:none;
  white-space:nowrap;

  border:1px solid rgba(31,42,50,.16);
  background:rgba(255,255,255,.88);
  color:var(--sub-deep);

  box-shadow:0 14px 34px rgba(9,15,22,.10);
  transition:transform var(--t-fast) var(--ease), box-shadow var(--t-fast) var(--ease), filter var(--t-fast) var(--ease);
}

.sub-btn.primary{
  background:linear-gradient(180deg, rgba(255,90,60,1), rgba(255,90,60,.92));
  border-color:rgba(255,90,60,.95);
  color:#fff;
}

@media (hover:hover) and (pointer:fine){
  .sub-btn:hover{
    transform:translateY(-2px);
    box-shadow:0 22px 55px rgba(9,15,22,.18);
    filter:saturate(1.02);
  }
}
.sub-btn:active{ transform:translateY(-1px); }

.sub-btn:focus-visible{
  outline:3px solid rgba(255,90,60,.28);
  outline-offset:3px;
}

/* =========================
   GRID FORMULES — 2x2 stable
   ========================= */
.sub-grid{
  display:grid;
  grid-template-columns:repeat(2, minmax(0, 1fr));
  gap:36px;
  margin-top:48px;
  align-items:stretch;
}

/* Mobile: 1 colonne */
@media (max-width:900px){
  .sub-grid{
    grid-template-columns:1fr;
    gap:26px;
  }
}

/* =========================
   CARDS — GLASS (visibles)
   ========================= */
.sub-card{
  height:100%;
  display:flex;
  flex-direction:column;

  border-radius:var(--sub-r);

  /* plus transparent -> effet verre */
  background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.22);

  backdrop-filter:blur(22px) saturate(1.18);
  -webkit-backdrop-filter:blur(22px) saturate(1.18);

  box-shadow:
    0 24px 70px rgba(9,15,22,.16),
    inset 0 1px 0 rgba(255,255,255,.20);

  overflow:hidden;
  position:relative;

  transition:transform var(--t-med) var(--ease), box-shadow var(--t-med) var(--ease);
}

/* reflets glass + micro “grain” */
.sub-card::before{
  content:"";
  position:absolute;
  inset:0;
  border-radius:inherit;
  background:
    radial-gradient(800px 360px at 30% 0%, rgba(255,255,255,.18), transparent 65%),
    linear-gradient(180deg, rgba(255,255,255,.08), transparent 55%);
  pointer-events:none;
  opacity:.95;
}

@media (hover:hover) and (pointer:fine){
  .sub-card:hover{
    transform:translateY(-6px);
    box-shadow:
      0 40px 110px rgba(9,15,22,.22),
      0 18px 60px rgba(255,90,60,.10);
  }
}

/* body + footer */
.sub-card-body{
  padding:32px 30px;
  flex:1;
  position:relative; /* au-dessus du ::before */
  z-index:1;
}
.sub-card-footer{
  padding:26px;
  text-align:center;
  background:rgba(246,248,247,.34);
  border-top:1px solid rgba(255,255,255,.18);
  position:relative;
  z-index:1;
}

@media (max-width:900px){
  .sub-card-body{ padding:26px 22px; }
  .sub-card-footer{ padding:22px; }
}

/* labels */
.sub-label{
  display:inline-block;
  padding:6px 14px;
  border-radius:999px;
  font-size:12px;
  font-weight:950;
  letter-spacing:.18em;
  text-transform:uppercase;
  margin-bottom:14px;
}
.sub-label.standard{ background:rgba(127,164,184,.14); color:var(--sub-steel); }
.sub-label.best{ background:var(--sub-accent); color:#fff; }
.sub-label.institution{ background:rgba(31,42,50,.08); color:var(--sub-deep); }

/* titles / text */
.sub-card h3{
  margin:0 0 14px;
  font-size:24px;
  font-weight:950;
  color:rgba(11,18,24,.86);
}
.sub-tagline{
  margin:0 0 18px;
  font-size:16px;
  line-height:1.6;
  color:rgba(11,18,24,.70);
}

/* list */
.sub-list{
  margin:0;
  padding-left:18px;
  font-size:15.8px;
  line-height:1.75;
  color:rgba(11,18,24,.72);
}
.sub-list li{ margin:8px 0; }
.sub-list li::marker{ color:var(--sub-accent); }
.sub-highlight{ color:var(--sub-accent); font-weight:950; }

/* note */
.sub-note{
  margin-top:12px;
  font-size:14.3px;
  color:rgba(11,18,24,.62);
  font-style:italic;
}

/* =========================
   4e CARTE IMAGE (glass + image)
   HTML: <article class="sub-card sub-card--image sub-reveal"></article>
   ========================= */
.sub-card--image{
  background:
    linear-gradient(180deg, rgba(9,15,22,.36) 0%, rgba(9,15,22,.18) 45%, rgba(9,15,22,.42) 100%),
    url("/medias/aion.png");
  background-size:cover;
  background-position:center;
  background-repeat:no-repeat;
}

/* reflets dédiés image */
.sub-card--image::after{
  content:"";
  position:absolute;
  inset:0;
  border-radius:inherit;
  background:
    radial-gradient(900px 380px at 30% 0%, rgba(255,255,255,.16), transparent 65%),
    radial-gradient(1000px 520px at 70% 85%, rgba(255,255,255,.08), transparent 70%);
  pointer-events:none;
  opacity:.9;
}

/* =========================
   INFOS PRATIQUES — TWO COLUMNS
   ========================= */
.sub-two-columns{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:60px;
  align-items:start;
  margin-top:40px;
}
@media (max-width:900px){
  .sub-two-columns{
    grid-template-columns:1fr;
    gap:40px;
  }
}

.sub-two-columns h2{
  margin:0 0 12px;
  font-size:28px;
  font-weight:950;
  position:relative;
  padding-left:14px;
  color:rgba(11,18,24,.86);
}
.sub-two-columns h2::before{
  content:"";
  position:absolute;
  left:0;
  top:.26em;
  width:4px;
  height:1.05em;
  border-radius:3px;
  background:var(--sub-accent);
}
.sub-divider{
  margin:16px 0 24px;
  height:1px;
  background:linear-gradient(90deg, transparent, rgba(31,42,50,.14), transparent);
}

/* =========================
   REVEAL ANIMATIONS
   ========================= */
.sub-js .sub-reveal{
  opacity:0;
  transform:translateY(18px);
  transition:opacity .85s ease, transform .85s ease;
  will-change:opacity, transform;
}
.sub-js .sub-reveal.is-in{
  opacity:1;
  transform:none;
}

/* Reduced motion */
@media (prefers-reduced-motion:reduce){
  .sub-js .sub-reveal{
    transition:none;
    opacity:1;
    transform:none;
  }
  .sub-btn, .sub-card{ transition:none; }
  .sub-card:hover{ transform:none; }
}

/* =========================
   RESPONSIVE TWEAKS (hero)
   ========================= */
@media (max-width:900px){
  .sub-heroGlass{ padding:44px 36px; border-radius:26px; }
}
@media (max-width:600px){
  .sub-heroGlass{ padding:34px 22px; border-radius:22px; }
}
																					  /* =========================================================
   HERO — TEXTE CLAIR (lisibilité maximale)
   À COLLER TOUT EN BAS DE abonnement.css
   ========================================================= */

.sub-heroGlass{
  color:rgba(255,255,255,.92);
}

/* Tag */
.sub-heroGlass .sub-tag{
  color:rgba(255,255,255,.65);
}

/* Titre principal */
.sub-heroGlass .sub-h1{
  color:#ffffff;
  text-shadow:0 12px 32px rgba(0,0,0,.55);
}

/* Sous-titre */
.sub-heroGlass .sub-subtitle{
  color:rgba(255,255,255,.78);
}

/* Paragraphe long */
.sub-heroGlass .sub-small{
  color:rgba(255,255,255,.72);
}

/* Sécurité : empêche toute règle sombre héritée */
.sub-heroGlass p,
.sub-heroGlass span,
.sub-heroGlass div{
  color:inherit;
}