/* ============================================================
   PORTFOLIO — Médard Kiteretse
   Style: Créatif & Coloré (gradients, animations)
   ============================================================ */

/* ---------- Design tokens ---------- */
:root{
  --bg:#0d0b1e;
  --bg-2:#151233;
  --surface:#1b1740;
  --surface-2:#221d52;
  --text:#f4f2ff;
  --muted:#a8a3c9;
  --primary:#7c3aed;   /* violet */
  --secondary:#ec4899; /* rose */
  --accent:#22d3ee;    /* cyan */
  --accent-2:#fbbf24;  /* jaune */
  --grad:linear-gradient(135deg,#7c3aed 0%,#ec4899 50%,#fb7185 100%);
  --grad-2:linear-gradient(135deg,#22d3ee 0%,#7c3aed 100%);
  --grad-text:linear-gradient(135deg,#a78bfa,#ec4899,#22d3ee);
  --radius:20px;
  --radius-sm:12px;
  --shadow:0 20px 60px -20px rgba(124,58,237,.45);
  --maxw:1200px;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:'Poppins','Segoe UI',system-ui,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.6;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
ul{list-style:none}
section{position:relative}

/* animated background blobs */
.blob{
  position:fixed;border-radius:50%;filter:blur(90px);opacity:.4;z-index:-1;
  animation:float 14s ease-in-out infinite;
}
.blob.b1{width:480px;height:480px;background:#7c3aed;top:-140px;left:-120px}
.blob.b2{width:420px;height:420px;background:#ec4899;bottom:-120px;right:-100px;animation-delay:-5s}
.blob.b3{width:360px;height:360px;background:#22d3ee;top:40%;left:60%;animation-delay:-9s}
@keyframes float{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(40px,-40px) scale(1.1)}}

.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}

.grad-text{
  background:var(--grad-text);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 28px;border-radius:50px;font-weight:600;font-size:15px;
  cursor:pointer;border:none;transition:.3s;position:relative;
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:var(--shadow)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 25px 70px -20px rgba(236,72,153,.6)}
.btn-outline{background:transparent;color:var(--text);border:1.5px solid rgba(255,255,255,.25)}
.btn-outline:hover{border-color:var(--secondary);background:rgba(236,72,153,.1);transform:translateY(-3px)}

/* ---------- Navbar ---------- */
.navbar{
  position:fixed;top:0;left:0;right:0;z-index:50;
  transition:.3s;padding:18px 0;
}
.navbar.scrolled{
  background:rgba(13,11,30,.85);backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(255,255,255,.06);padding:12px 0;
}
.nav-inner{display:flex;align-items:center;justify-content:space-between}
.logo{font-weight:800;font-size:22px;letter-spacing:.5px}
.logo span{color:var(--secondary)}
.nav-links{display:flex;gap:32px;align-items:center}
.nav-links a{font-size:15px;color:var(--muted);font-weight:500;transition:.25s;position:relative}
.nav-links a::after{
  content:'';position:absolute;left:0;bottom:-6px;width:0;height:2px;
  background:var(--grad);transition:.3s;border-radius:2px;
}
.nav-links a:hover{color:var(--text)}
.nav-links a:hover::after{width:100%}
.nav-cta{padding:10px 22px}
.burger{display:none;flex-direction:column;gap:5px;cursor:pointer;background:none;border:none}
.burger span{width:26px;height:3px;background:var(--text);border-radius:3px;transition:.3s}

/* ---------- Hero ---------- */
.hero{min-height:100vh;display:flex;align-items:center;padding:120px 0 60px}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:60px;align-items:center}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 18px;border-radius:50px;font-size:13px;font-weight:600;
  background:rgba(124,58,237,.15);border:1px solid rgba(124,58,237,.4);
  color:#c4b5fd;margin-bottom:24px;
}
.hero-eyebrow .dot{width:8px;height:8px;border-radius:50%;background:#22d3ee;box-shadow:0 0 12px #22d3ee;animation:pulse 1.5s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}
.hero h1{font-size:clamp(2.4rem,5.5vw,4.2rem);font-weight:800;line-height:1.1;margin-bottom:20px}
.hero p.lead{font-size:19px;color:var(--muted);margin-bottom:34px;max-width:520px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:40px}
.hero-stats{display:flex;gap:40px}
.hero-stats .num{font-size:32px;font-weight:800}
.hero-stats .lbl{font-size:13px;color:var(--muted)}

.hero-visual{position:relative;display:flex;justify-content:center}
.avatar-ring{
  width:340px;height:340px;border-radius:50%;padding:6px;
  background:var(--grad);box-shadow:var(--shadow);
  animation:spin 12s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}
.avatar-ring img{width:100%;height:100%;border-radius:50%;object-fit:cover;animation:spin 12s linear infinite reverse}
.floating-badge{
  position:absolute;background:var(--surface-2);border:1px solid rgba(255,255,255,.08);
  padding:12px 18px;border-radius:16px;font-weight:600;font-size:14px;
  box-shadow:0 12px 30px rgba(0,0,0,.4);animation:bob 4s ease-in-out infinite;
}
.floating-badge .ic{font-size:20px;margin-right:6px}
.fb1{top:20px;left:-10px;animation-delay:0s}
.fb2{bottom:50px;left:-30px;animation-delay:-1.5s}
.fb3{top:80px;right:-20px;animation-delay:-2.5s}
@keyframes bob{0%,100%{transform:translateY(0)}50%{transform:translateY(-14px)}}

/* ---------- Section headers ---------- */
.section{padding:100px 0}
.section-head{text-align:center;max-width:640px;margin:0 auto 60px}
.section-tag{
  font-size:14px;font-weight:700;letter-spacing:2px;text-transform:uppercase;
  color:var(--secondary);margin-bottom:12px;display:block;
}
.section-head h2{font-size:clamp(2rem,4vw,3rem);font-weight:800;line-height:1.15}
.section-head p{color:var(--muted);margin-top:14px;font-size:17px}

/* ---------- About ---------- */
.about-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:60px;align-items:center}
.about-photo{position:relative}
.about-photo img{border-radius:var(--radius);box-shadow:var(--shadow)}
.about-photo::before{
  content:'';position:absolute;inset:-14px;border-radius:calc(var(--radius) + 14px);
  background:var(--grad);z-index:-1;opacity:.5;filter:blur(30px);
}
.about-text h3{font-size:26px;font-weight:700;margin-bottom:16px}
.about-text p{color:var(--muted);margin-bottom:16px;font-size:16px}
.about-info{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:24px}
.about-info li{font-size:14px}
.about-info .k{color:var(--secondary);font-weight:600;display:block;font-size:12px;text-transform:uppercase;letter-spacing:1px}

/* ---------- Filters ---------- */
.filters{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-bottom:44px}
.filter-btn{
  padding:10px 22px;border-radius:50px;font-weight:600;font-size:14px;cursor:pointer;
  background:var(--surface);border:1px solid rgba(255,255,255,.08);color:var(--muted);transition:.3s;
}
.filter-btn:hover{color:var(--text);border-color:var(--secondary)}
.filter-btn.active{background:var(--grad);color:#fff;border-color:transparent}

/* ---------- Projects grid ---------- */
.projects-grid{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:28px;
}
.project-card{
  background:var(--surface);border:1px solid rgba(255,255,255,.06);
  border-radius:var(--radius);overflow:hidden;cursor:pointer;transition:.4s;
  opacity:1;transform:scale(1);
}
.project-card.hide{display:none}
.project-card:hover{transform:translateY(-8px);box-shadow:var(--shadow);border-color:rgba(236,72,153,.4)}
.project-thumb{position:relative;overflow:hidden;aspect-ratio:800/560;background:var(--bg-2)}
.project-thumb img{width:100%;height:100%;object-fit:cover;object-position:top center;transition:.6s}
.project-card:hover .project-thumb img{transform:scale(1.06)}
.project-overlay{
  position:absolute;inset:0;background:linear-gradient(to top,rgba(13,11,30,.92),rgba(124,58,237,.25) 55%,transparent 80%);
  display:flex;align-items:flex-end;padding:20px;opacity:0;transition:.4s;
}
.project-card:hover .project-overlay{opacity:1}
.project-view{display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:15px;color:#fff}
.project-count{
  position:absolute;top:14px;right:14px;background:rgba(13,11,30,.72);
  backdrop-filter:blur(6px);color:#fff;font-size:12px;font-weight:600;
  padding:5px 12px;border-radius:50px;border:1px solid rgba(255,255,255,.15);
}
.project-info{padding:20px}
.project-cat{font-size:12px;font-weight:700;letter-spacing:1px;text-transform:uppercase;color:var(--accent);margin-bottom:8px;display:block}
.project-info h3{font-size:20px;font-weight:700;margin-bottom:6px}
.project-info p{font-size:14px;color:var(--muted)}
.project-tags{display:flex;gap:6px;flex-wrap:wrap;margin-top:14px}
.project-tags span{font-size:11px;padding:5px 10px;border-radius:50px;background:var(--surface-2);color:var(--muted);font-weight:500}

/* ---------- Galerie dans l'étude de cas ---------- */
.gallery-block{margin-top:30px;border-top:1px solid rgba(255,255,255,.08);padding-top:24px}
.gallery-title{font-size:17px;font-weight:700;margin-bottom:16px}
.gallery-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px}
.gallery-item{
  margin:0;border-radius:14px;overflow:hidden;cursor:pointer;position:relative;
  background:var(--bg-2);border:1px solid rgba(255,255,255,.08);
  max-height:260px;transition:.3s;
}
.gallery-item img{width:100%;display:block;object-fit:cover;object-position:top center;max-height:260px;transition:.5s}
.gallery-item:hover{border-color:rgba(124,58,237,.6);transform:translateY(-4px)}
.gallery-item:hover img{transform:scale(1.05)}
.gallery-item::after{
  content:"🔍";position:absolute;top:8px;right:8px;font-size:13px;
  background:rgba(13,11,30,.7);width:28px;height:28px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;opacity:0;transition:.3s;
}
.gallery-item:hover::after{opacity:1}

/* ---------- Lightbox ---------- */
.lightbox{
  position:fixed;inset:0;z-index:2000;background:rgba(8,6,20,.94);
  backdrop-filter:blur(8px);display:none;align-items:center;justify-content:center;padding:30px;
}
.lightbox.open{display:flex}
.lightbox img{max-width:min(92vw,1100px);max-height:88vh;border-radius:12px;box-shadow:0 30px 90px rgba(0,0,0,.6)}
.lightbox-close{
  position:absolute;top:22px;right:26px;width:46px;height:46px;border-radius:50%;
  border:none;background:rgba(255,255,255,.1);color:#fff;font-size:20px;cursor:pointer;transition:.25s;
}
.lightbox-close:hover{background:var(--grad);transform:rotate(90deg)}
.lightbox-nav{
  position:absolute;top:50%;transform:translateY(-50%);width:54px;height:54px;border-radius:50%;
  border:none;background:rgba(255,255,255,.1);color:#fff;font-size:30px;cursor:pointer;
  display:flex;align-items:center;justify-content:center;transition:.25s;
}
.lightbox-nav:hover{background:var(--grad)}
.lightbox-prev{left:26px}
.lightbox-next{right:26px}

/* ---------- Skills ---------- */
.skills-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:24px}
.skill-card{
  background:var(--surface);border:1px solid rgba(255,255,255,.06);
  border-radius:var(--radius);padding:28px;transition:.35s;
}
.skill-card:hover{transform:translateY(-6px);border-color:rgba(124,58,237,.4);box-shadow:var(--shadow)}
.skill-icon{
  width:56px;height:56px;border-radius:16px;background:var(--grad-2);
  display:flex;align-items:center;justify-content:center;font-size:26px;margin-bottom:18px;
}
.skill-card h3{font-size:19px;font-weight:700;margin-bottom:10px}
.skill-card p{font-size:14px;color:var(--muted);margin-bottom:16px}
.skill-bars li{margin-bottom:14px}
.skill-bars .row{display:flex;justify-content:space-between;font-size:13px;margin-bottom:5px}
.bar{height:7px;border-radius:50px;background:rgba(255,255,255,.08);overflow:hidden}
.bar span{display:block;height:100%;border-radius:50px;background:var(--grad);width:0;transition:width 1.2s ease}

/* ---------- Contact ---------- */
.contact-wrap{
  background:var(--surface);border:1px solid rgba(255,255,255,.07);
  border-radius:32px;padding:60px;text-align:center;position:relative;overflow:hidden;
}
.contact-wrap::before{
  content:'';position:absolute;top:-100px;left:50%;transform:translateX(-50%);
  width:500px;height:300px;background:var(--grad);filter:blur(120px);opacity:.35;z-index:0;
}
.contact-wrap>*{position:relative;z-index:1}
.contact-wrap h2{font-size:clamp(2rem,4vw,2.8rem);font-weight:800;margin-bottom:14px}
.contact-wrap p{color:var(--muted);max-width:480px;margin:0 auto 30px;font-size:17px}
.contact-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-bottom:36px}
.socials{display:flex;gap:16px;justify-content:center}
.social-btn{
  width:52px;height:52px;border-radius:16px;background:var(--surface-2);
  display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:700;
  border:1px solid rgba(255,255,255,.08);transition:.3s;
}
.social-btn:hover{background:var(--grad);transform:translateY(-4px);border-color:transparent}

/* ---------- Footer ---------- */
footer{padding:40px 0;text-align:center;color:var(--muted);border-top:1px solid rgba(255,255,255,.06);font-size:14px}
footer .logo{font-size:18px;margin-bottom:8px}

/* ---------- Modal (case study) ---------- */
.modal-overlay{
  position:fixed;inset:0;background:rgba(5,4,15,.85);backdrop-filter:blur(6px);
  z-index:100;display:none;align-items:flex-start;justify-content:center;
  padding:40px 20px;overflow-y:auto;
}
.modal-overlay.open{display:flex}
.modal-card{
  background:var(--surface);border:1px solid rgba(255,255,255,.08);
  border-radius:24px;max-width:820px;width:100%;overflow:hidden;
  animation:modalIn .35s ease;
}
@keyframes modalIn{from{opacity:0;transform:translateY(30px) scale(.97)}to{opacity:1;transform:none}}
.modal-hero{position:relative}
.modal-hero img{width:100%;max-height:420px;object-fit:cover}
.modal-close{
  position:absolute;top:16px;right:16px;width:42px;height:42px;border-radius:50%;
  background:rgba(0,0,0,.5);border:none;color:#fff;font-size:20px;cursor:pointer;
  display:flex;align-items:center;justify-content:center;transition:.3s;
}
.modal-close:hover{background:var(--secondary);transform:rotate(90deg)}
.modal-body{padding:32px 40px 40px}
.modal-cat{color:var(--accent);font-weight:700;letter-spacing:1px;text-transform:uppercase;font-size:13px}
.modal-body h2{font-size:30px;font-weight:800;margin:8px 0 16px}
.modal-body p{color:var(--muted);margin-bottom:18px}
.modal-meta{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:24px 0;padding:22px;background:var(--surface-2);border-radius:16px}
.modal-meta .k{font-size:12px;text-transform:uppercase;letter-spacing:1px;color:var(--secondary);font-weight:700}
.modal-meta .v{font-size:15px;font-weight:600;margin-top:4px}
.modal-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:8px}
.modal-tags span{font-size:12px;padding:6px 13px;border-radius:50px;background:var(--surface-2);color:var(--text);font-weight:500;border:1px solid rgba(255,255,255,.08)}
.modal-hero img{object-position:top center}

/* ---------- Reveal on scroll ---------- */
.reveal{opacity:0;transform:translateY(40px);transition:.8s cubic-bezier(.2,.7,.2,1)}
.reveal.visible,.reveal.in{opacity:1;transform:none}

/* ---------- Responsive ---------- */
@media(max-width:900px){
  .hero-grid,.about-grid{grid-template-columns:1fr;gap:40px}
  .hero-visual{order:-1}
  .avatar-ring{width:250px;height:250px}
  .nav-links{
    position:fixed;top:0;right:-100%;height:100vh;width:75%;max-width:320px;
    flex-direction:column;justify-content:center;gap:28px;
    background:var(--bg-2);transition:.4s;box-shadow:-20px 0 60px rgba(0,0,0,.5);
  }
  .nav-links.open{right:0}
  .burger{display:flex;z-index:60}
  .modal-body,.contact-wrap{padding:28px 22px}
  .modal-meta{grid-template-columns:1fr}
}
@media(max-width:560px){
  .hero-stats{gap:24px}
  .projects-grid{grid-template-columns:1fr}
}

/* ---------- Sélecteur de langue ---------- */
.lang-switch{
  display:inline-flex;align-items:center;gap:4px;
  padding:8px 14px;border-radius:999px;
  font-weight:600;font-size:.85rem;
  color:#fff;text-decoration:none;
  border:1.5px solid rgba(255,255,255,.25);
  background:rgba(255,255,255,.06);
  transition:all .25s ease;margin-left:6px;
}
.lang-switch:hover{
  border-color:transparent;
  background:linear-gradient(135deg,#7c3aed 0%,#ec4899 50%,#fb7185 100%);
  transform:translateY(-2px);
}

/* ---------- Bouton étude de cas complète ---------- */
.case-link-btn{
  display:inline-flex;margin-top:22px;
  font-size:1rem;
}