/* =====================================================
   Base commune aux 3 pages du portfolio.
   Les styles propres à chaque page restent dans la page.
   ===================================================== */
:root{
  color-scheme:light;
  --bg:#F4F3FD; --ink:#191632; --ink-soft:#4B4768;
  --cobalt:#3B2FE0; --coral:#FF5D4D; --sun:#FFC53D;
  --sun-ink:#A86D00;                  /* jaune lisible sur fond clair */
  --card:#FFFFFF; --line:rgba(25,22,50,.10); --radius:22px;

  /* Surfaces sombres (blocs contact, formation, boutons pleins).
     Elles restent sombres dans les deux thèmes : --ink, lui, s'inverse. */
  --panel:#191632; --on-panel:#FFFFFF;
  /* Accent lisible sur le fond courant ; --cobalt reste la couleur de
     remplissage (boutons, pastilles) où le texte est blanc. */
  --accent:#3B2FE0; --accent-soft:rgba(59,47,224,.09);
  --coral-soft:rgba(255,93,77,.12);
  --nav-bg:rgba(255,255,255,.75); --nav-bg-solid:rgba(255,255,255,.94);
  --track:rgba(25,22,50,.08); --line-strong:rgba(25,22,50,.25);
  --blob1:#C9C2FF; --blob2:#FFD4CE; --blob3:#FFEDBE; --blob4:#BFE3FF;
  --blob-opacity:.55;
  --name-gradient:linear-gradient(100deg,#3B2FE0 0%,#7A3BE6 32%,#FF5D4D 68%,#FF8A3D 100%);
}

/* Thème sombre : automatique selon les réglages du système, sauf si le
   visiteur a explicitement choisi le thème clair. */
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    color-scheme:dark;
    --bg:#0F0D1A; --ink:#F3F1FB; --ink-soft:#ABA5C6;
    --coral:#FF7A6B; --sun-ink:#FFC53D;
    --card:#1A1730; --line:rgba(255,255,255,.11);
    --panel:#241F3C;
    --accent:#A99BFF; --accent-soft:rgba(169,155,255,.16);
    --coral-soft:rgba(255,122,107,.18);
    --nav-bg:rgba(26,23,48,.78); --nav-bg-solid:rgba(18,15,34,.96);
    --track:rgba(255,255,255,.12); --line-strong:rgba(255,255,255,.28);
    --blob1:#2A2470; --blob2:#4A2036; --blob3:#463818; --blob4:#16324A;
    --blob-opacity:.5;
    --name-gradient:linear-gradient(100deg,#A99BFF 0%,#C9A0FF 30%,#FF7A6B 66%,#FFC53D 100%);
  }
}
/* Choix explicite du visiteur, prioritaire sur le système. */
:root[data-theme="dark"]{
  color-scheme:dark;
  --bg:#0F0D1A; --ink:#F3F1FB; --ink-soft:#ABA5C6;
  --coral:#FF7A6B; --sun-ink:#FFC53D;
  --card:#1A1730; --line:rgba(255,255,255,.11);
  --panel:#241F3C;
  --accent:#A99BFF; --accent-soft:rgba(169,155,255,.16);
  --coral-soft:rgba(255,122,107,.18);
  --nav-bg:rgba(26,23,48,.78); --nav-bg-solid:rgba(18,15,34,.96);
  --track:rgba(255,255,255,.12); --line-strong:rgba(255,255,255,.28);
  --blob1:#2A2470; --blob2:#4A2036; --blob3:#463818; --blob4:#16324A;
  --blob-opacity:.5;
  --name-gradient:linear-gradient(100deg,#A99BFF 0%,#C9A0FF 30%,#FF7A6B 66%,#FFC53D 100%);
}
*{margin:0;padding:0;box-sizing:border-box}
/* overflow-x sur html, pas sur body : sinon body devient le conteneur
   de défilement et le scroll fluide des ancres ne s'applique plus. */
html{scroll-behavior:smooth;scroll-padding-top:110px;overflow-x:hidden}
body{font-family:'Archivo',sans-serif;background:var(--bg);color:var(--ink);line-height:1.6}
::selection{background:var(--cobalt);color:#fff}
:focus-visible{outline:3px solid var(--accent);outline-offset:3px;border-radius:6px}

/* Blobs animés en fond */
.blobs{position:fixed;inset:0;z-index:0;pointer-events:none;overflow:hidden;filter:blur(70px)}
.blob{position:absolute;border-radius:50%;opacity:var(--blob-opacity);will-change:transform}
.blob.b1{width:520px;height:520px;background:var(--blob1);top:-120px;left:-100px;animation:drift1 26s ease-in-out infinite}
.blob.b2{width:460px;height:460px;background:var(--blob2);top:30%;right:-140px;animation:drift2 32s ease-in-out infinite}
.blob.b3{width:400px;height:400px;background:var(--blob3);bottom:-120px;left:28%;animation:drift3 38s ease-in-out infinite}
.blob.b4{width:300px;height:300px;background:var(--blob4);top:58%;left:-80px;animation:drift2 29s ease-in-out infinite reverse}
@keyframes drift1{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(90px,60px) scale(1.12)}}
@keyframes drift2{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(-70px,-90px) scale(.94)}}
@keyframes drift3{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(60px,-70px) scale(1.08)}}

main{position:relative;z-index:1}
.wrap{max-width:1100px;margin:0 auto;padding:0 24px}

/* Transition d'arrivée : donne la sensation d'un site, pas de 3 fichiers */
@keyframes pageIn{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
/* Pas de fill-mode `both` : sans lui, si l'animation ne démarre pas,
   le contenu reste visible au lieu de rester bloqué à opacity:0. */
@supports not (view-transition-name: none){
  main{animation:pageIn .5s cubic-bezier(.2,.8,.3,1)}
  body>nav{animation:fadeIn .6s ease}
}

/* Transitions entre pages : le document sortant recule et s'efface,
   le nouveau se dévoile par le bas en gardant la barre de nav en place. */
@view-transition{ navigation:auto }
body>nav{view-transition-name:site-nav}
::view-transition-old(root){animation:vtOut .34s cubic-bezier(.55,0,1,.45) both}
::view-transition-new(root){animation:vtIn .52s cubic-bezier(.16,1,.3,1) both}
::view-transition-old(site-nav),::view-transition-new(site-nav){animation:none}
@keyframes vtOut{
  to{opacity:0;transform:scale(.97) translateY(-14px);filter:blur(3px)}
}
@keyframes vtIn{
  from{opacity:0;transform:translateY(26px);clip-path:inset(38% 0 0 0 round 26px)}
  to{opacity:1;transform:none;clip-path:inset(0 0 0 0 round 0)}
}
@media (prefers-reduced-motion: reduce){
  ::view-transition-old(root),::view-transition-new(root){animation:none}
}

/* Nav principale (enfant direct de body) */
body>nav{
  position:fixed;top:18px;left:50%;transform:translateX(-50%);
  z-index:50;display:flex;align-items:center;gap:4px;
  background:var(--nav-bg);backdrop-filter:blur(14px);
  border:1px solid var(--line);border-radius:999px;padding:8px 10px;
  box-shadow:0 8px 30px rgba(25,22,50,.08);
}
body>nav a{text-decoration:none;color:var(--ink-soft);font-weight:600;font-size:.85rem;padding:8px 14px;border-radius:999px;transition:all .25s;white-space:nowrap}
body>nav a:hover{background:var(--panel);color:var(--on-panel)}
body>nav a.active{background:var(--accent-soft);color:var(--accent)}
body>nav a.cta{background:var(--cobalt);color:#fff}
body>nav a.cta:hover{background:var(--coral)}
body>nav a.brand{
  display:flex;align-items:center;justify-content:center;width:34px;height:34px;padding:0;
  background:var(--panel);color:var(--on-panel);border-radius:50%;
  font-family:'Syne',sans-serif;font-weight:800;font-size:.78rem;letter-spacing:.02em;margin-right:4px;
}
body>nav a.brand:hover{background:var(--cobalt);transform:rotate(-8deg)}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-name{display:none}
.theme-toggle{
  order:3;display:flex;align-items:center;justify-content:center;
  width:34px;height:34px;margin-left:4px;padding:0;cursor:pointer;
  background:transparent;border:1.5px solid var(--line);border-radius:50%;
  color:var(--ink);transition:background .25s,border-color .25s,transform .25s;
}
.theme-toggle:hover{background:var(--accent-soft);border-color:var(--accent);transform:rotate(-12deg)}
.theme-toggle .i-sun{display:none}
:root[data-theme="dark"] .theme-toggle .i-sun{display:block}
:root[data-theme="dark"] .theme-toggle .i-moon{display:none}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]) .theme-toggle .i-sun{display:block}
  :root:not([data-theme="light"]) .theme-toggle .i-moon{display:none}
}
.nav-toggle{
  display:none;width:42px;height:42px;border:none;background:transparent;cursor:pointer;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;border-radius:12px;
}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--ink);border-radius:2px;transition:transform .3s,opacity .2s}
body.nav-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
body.nav-open .nav-toggle span:nth-child(2){opacity:0}
body.nav-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* Boutons */
.btn{display:inline-flex;align-items:center;gap:8px;text-decoration:none;font-weight:700;padding:14px 26px;border-radius:999px;transition:transform .25s,box-shadow .25s,background .25s;border:none;cursor:pointer;font-family:'Archivo',sans-serif;font-size:1rem}
.btn.primary{background:var(--panel);color:var(--on-panel)}
.btn.primary:hover{transform:translateY(-3px);box-shadow:0 14px 30px rgba(25,22,50,.25);background:var(--cobalt)}
.btn.ghost{border:2px solid var(--ink);color:var(--ink);background:transparent}
.btn.ghost:hover{transform:translateY(-3px);background:var(--card)}

/* Sections */
section{padding:96px 0}
.sec-head{display:flex;align-items:baseline;justify-content:space-between;gap:20px;margin-bottom:44px;flex-wrap:wrap}
h2{font-family:'Syne',sans-serif;font-weight:800;font-size:clamp(1.9rem,4vw,3rem);letter-spacing:-.01em}
.sec-head .tag{font-size:.8rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);border:1.5px solid var(--accent);border-radius:999px;padding:6px 14px}
.sec-intro{max-width:620px;color:var(--ink-soft);margin:-26px 0 44px}

/* En-tête des sous-pages */
.page-hero{padding:160px 0 30px}
.page-hero .eyebrow{display:inline-flex;align-items:center;gap:10px;font-weight:600;font-size:.85rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-soft);margin-bottom:16px}
.page-hero h1{font-family:'Syne',sans-serif;font-weight:800;font-size:clamp(2.3rem,6vw,4.2rem);line-height:1.05;letter-spacing:-.02em}
.page-hero h1 .accent{color:var(--accent)}
.page-hero p{max-width:600px;margin-top:18px;color:var(--ink-soft);font-size:1.05rem}
.back-link{display:flex;width:fit-content;align-items:center;gap:8px;text-decoration:none;color:var(--ink-soft);font-weight:600;font-size:.9rem;margin-bottom:24px;transition:color .2s,transform .2s}
.back-link:hover{color:var(--accent);transform:translateX(-4px)}

/* Note placeholder */
.placeholder-note{margin-top:34px;text-align:center;font-size:.85rem;color:var(--ink-soft);background:rgba(255,197,61,.18);border:1.5px dashed var(--line-strong);border-radius:14px;padding:14px 20px}

/* Navigation de bas de page : passe d'une page à l'autre sans remonter */
.next-page{
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:30px 34px;margin-bottom:70px;transition:transform .35s cubic-bezier(.2,.8,.3,1),box-shadow .35s;
  text-decoration:none;color:var(--ink);
}
.next-page:hover{transform:translateY(-4px);box-shadow:0 22px 50px rgba(25,22,50,.14)}
.next-page .np-eyebrow{font-size:.72rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-soft);margin-bottom:4px}
.next-page h3{font-family:'Syne',sans-serif;font-size:1.5rem}

/* Footer */
footer{position:relative;z-index:1;border-top:1px solid var(--line);margin-top:20px;padding:38px 0 44px}
footer .foot{display:flex;align-items:flex-start;justify-content:space-between;gap:26px;flex-wrap:wrap}
footer .foot-brand strong{display:block;font-family:'Syne',sans-serif;font-size:1.05rem}
footer .foot-brand span{font-size:.85rem;color:var(--ink-soft)}
footer .foot-links{display:flex;gap:20px;flex-wrap:wrap;font-size:.88rem;font-weight:600}
footer .foot-links a{color:var(--ink-soft);text-decoration:none;transition:color .2s;padding:6px 0}
footer .foot-links a:hover{color:var(--accent)}
footer .foot-legal{margin-top:26px;font-size:.8rem;color:var(--ink-soft)}

@media(max-width:820px){
  /* Barre compacte : monogramme à gauche, burger à droite. */
  body>nav{
    left:12px;right:12px;transform:none;width:auto;max-width:none;
    justify-content:space-between;border-radius:18px;padding:8px 10px;
    /* backdrop-filter ferait de la barre le bloc conteneur du panneau
       en position:fixed : il se calerait sur la barre, pas sur l'écran. */
    backdrop-filter:none;background:var(--nav-bg-solid);
  }
  body>nav .brand,.nav-name,.nav-toggle{position:relative;z-index:2}
  /* Remplit la barre entre le monogramme et le burger : sans lui,
     la barre pleine largeur laisse un grand vide au milieu. */
  .nav-name{
    display:block;flex:1;min-width:0;margin-left:11px;
    font-family:'Syne',sans-serif;font-weight:700;font-size:.95rem;
    color:var(--ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
  }
  .nav-toggle{display:flex;order:4}
  /* Panneau plein écran, ouvert par le burger. */
  .nav-links{
    position:fixed;inset:0;z-index:1;
    flex-direction:column;align-items:stretch;justify-content:center;gap:6px;
    padding:96px 24px 40px;overflow-y:auto;
    background:var(--bg);
    opacity:0;pointer-events:none;transform:translateY(-8px);
    transition:opacity .28s ease,transform .28s cubic-bezier(.2,.8,.3,1);
  }
  body.nav-open .nav-links{opacity:1;transform:none;pointer-events:auto}
  body>nav .nav-links a{
    font-size:1.15rem;padding:15px 18px;border-radius:14px;text-align:left;
    border-bottom:1px solid var(--line);
  }
  body>nav .nav-links a:last-child{border-bottom:none;margin-top:14px;text-align:center}
  section{padding:70px 0}
  .page-hero{padding:130px 0 20px}
  .next-page{padding:26px}
  footer .foot-links{gap:14px 22px}
  footer .foot-links a{padding:10px 0}
}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
}

/* Syne est large : on réduit le nom sur les très petits écrans. */
@media(max-width:380px){
  .nav-name{font-size:.85rem;margin-left:9px}
}