:root{
  --bg: #070A12;
  --panel: rgba(255,255,255,.06);
  --panel2: rgba(255,255,255,.09);
  --text: rgba(255,255,255,.92);
  --muted: rgba(255,255,255,.70);
  --border: rgba(255,255,255,.12);

  --accent: #33B6FF;
  --accent2: #7C5CFF;

  --shadow: 0 12px 40px rgba(0,0,0,.35);
  --radius: 18px;

  --font: "Inter", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;

  color-scheme: dark;
}

html[data-theme="light"]{
  --bg: #f6f7fb;
  --panel: rgba(0,0,0,.04);
  --panel2: rgba(0,0,0,.06);
  --text: rgba(12,18,34,.92);
  --muted: rgba(12,18,34,.70);
  --border: rgba(12,18,34,.14);

  --accent: #0b84ff;
  --accent2: #7c3aed;

  --shadow: 0 14px 40px rgba(15,24,44,.16);

  color-scheme: light;
}

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }

body{
  margin:0;
  font-family: var(--font);
  background: radial-gradient(1200px 600px at 20% 0%, rgba(124,92,255,.18), transparent 55%),
              radial-gradient(900px 500px at 90% 12%, rgba(51,182,255,.20), transparent 55%),
              var(--bg);
  color: var(--text);
  line-height: 1.55;
}

a{ color: inherit; text-decoration: none; }
.container{ width:min(1100px, calc(100% - 40px)); margin: 0 auto; }

.skip-link{
  position:absolute; left:-999px; top: 10px;
  background: var(--text); color: var(--bg);
  padding: 10px 12px; border-radius: 10px;
}
.skip-link:focus{ left: 16px; z-index: 9999; }

/* Header */
.site-header{
  position: sticky;
  top: 0;
  z-index: 2000;

  background: transparent;
  backdrop-filter: none;

  border-bottom: 1px solid transparent;
  box-shadow: none;

}

/* Effet "blur" sans recolorer (PC / tablette) */
@media (min-width: 741px){
  .site-header{
    background: rgba(0,0,0,.02);
    backdrop-filter: blur(10px);
    border-bottom-color: transparent;
    box-shadow: 0 12px 30px rgba(0,0,0,.16);
  }

  html[data-theme="light"] .site-header{
    background: rgba(255,255,255,.04);
    border-bottom-color: transparent;
    box-shadow: 0 12px 30px rgba(15,24,44,.10);
  }

  .site-header.nav-links a{
    text-shadow: 0 1px 10px rgba(0,0,0,.35);
  }
}

/* valeur 0..1 envoyée par JS */
@media (min-width: 741px){
  .site-header{ --hfx: 0; }

  .site-header{
    background: rgba(0,0,0, calc(0.02 + var(--hfx) * 0.06));
    backdrop-filter: blur(calc(var(--hfx) * 14px));
    border-bottom-color: transparent;
    box-shadow: 0 12px 30px rgba(0,0,0, calc(var(--hfx) * 0.18));
  }

  html[data-theme="light"] .site-header{
    background: rgba(255,255,255, calc(0.02 + var(--hfx) * 0.08));
    box-shadow: 0 12px 30px rgba(15,24,44, calc(var(--hfx) * 0.12));
  }

  .site-header .nav-links a{
    text-shadow: 0 1px 10px rgba(0,0,0, calc(var(--hfx) * 0.35));
  }
}

.nav{
  position: relative;
  display:flex; align-items:center; justify-content:space-between;
  gap: 16px;
  padding: 14px 0;
}

.brand{ display:flex; align-items:center; gap: 10px; font-weight: 700; letter-spacing: .2px; }
.brand-dot{
  width: 12px; height: 12px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  box-shadow: 0 0 0 6px rgba(51,182,255,.15);
}
.brand-text{ font-size: 14px; }

.nav-links{ display:flex; gap: 18px; align-items:center; }
.nav-links a{
  font-size: 14px;
  color: var(--muted);
  padding: 8px 10px;
  border-radius: 10px;
  transition: background .2s ease, color .2s ease, transform .2s ease;
}
.nav-links a:hover{ color: var(--text); background: var(--panel); }

.nav-actions{ display:flex; align-items:center; gap: 10px; }

.icon-btn, .pill-btn{
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  height: 38px;
  border-radius: 999px;
  cursor:pointer;
  transition: transform .2s ease, background .2s ease;
}
.icon-btn{ width: 38px; display:grid; place-items:center; }
.pill-btn{ padding: 0 12px; font-weight: 600; }

.icon-btn:hover, .pill-btn:hover{ transform: translateY(-1px); }
.icon-btn:active, .pill-btn:active{ transform: translateY(0px); }

.nav-toggle{
  display:none;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 12px;
  width: 44px;
  height: 42px;
  cursor: pointer;
}
.nav-toggle span{
  display:block;
  height: 2px;
  background: var(--text);
  margin: 6px 10px;
  border-radius: 2px;
  opacity: .85;
}

/* Le fond du hero toujours derrière */
.hero{ position: relative; }
.hero-bg{
  z-index: -1;           /* derrière le contenu */
  pointer-events: none;  /* ne bloque jamais les clics */
}


.nav, .nav-toggle, .nav-actions{
  position: relative;
  z-index: 2001;
}



.hero-grid{
  display:grid;
  grid-template-columns: 1.35fr .85fr;
  gap: 22px;
  align-items: start;
}

.kicker{
  color: var(--muted);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .3px;
}

.hero-title{
  margin: 10px 0 10px;
  font-size: clamp(34px, 4.2vw, 52px);
  line-height: 1.05;
}
.hero-subtitle{
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 16px;
  max-width: 55ch;
}

.hero-cta{ display:flex; gap: 12px; flex-wrap: wrap; margin-bottom: 14px; }

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap: 8px;
  border-radius: 999px;
  padding: 12px 14px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  box-shadow: 0 6px 22px rgba(0,0,0,.18);
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.btn:hover{ transform: translateY(-1px); }
.btn:active{ transform: translateY(0px); }

.btn.primary{
  border-color: rgba(51,182,255,.35);
  background: linear-gradient(135deg, rgba(51,182,255,.22), rgba(124,92,255,.20));
}
.btn.ghost{ background: transparent; }
.btn.small{ padding: 10px 12px; font-size: 14px; }

.hero-chips{ display:flex; gap: 8px; flex-wrap: wrap; margin-top: 10px; }
.chip{
  font-size: 12px;
  padding: 7px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.04);
  color: var(--muted);
}

.hero-card{
  border: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(255,255,255,.08), rgba(255,255,255,.04));
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px;
}

.stat-grid{ display:grid; grid-template-columns: 1fr; gap: 12px; }
.stat{
  border: 1px solid var(--border);
  border-radius: 14px;
  background: rgba(0,0,0,.12);
  padding: 12px;
}
html[data-theme="light"] .stat{ background: rgba(255,255,255,.7); }

.stat-num{ font-weight: 800; letter-spacing: .2px; }
.stat-label{ color: var(--muted); font-size: 13px; margin-top: 4px; }

.mini-links{ display:flex; gap: 10px; margin-top: 14px; flex-wrap: wrap; }
.mini-link{
  border: 1px solid var(--border);
  background: var(--panel);
  padding: 10px 12px;
  border-radius: 999px;
  font-size: 14px;
  color: var(--muted);
  transition: transform .2s ease, background .2s ease, color .2s ease;
}
.mini-link:hover{ color: var(--text); transform: translateY(-1px); }

/* SECTIONS */
.section{ padding: 56px 0; }
.section-head{ margin-bottom: 16px; }
.section-title{ margin: 0 0 6px; font-size: 26px; }
.section-subtitle{ margin: 0; color: var(--muted); max-width: 70ch; }

.card{
  border: 1px solid var(--border);
  background: var(--panel);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: 0 10px 30px rgba(0,0,0,.18);
}
.card h3{ margin: 0 0 10px; font-size: 18px; }

.muted{ color: var(--muted); }
.tiny{ font-size: 12px; }

.about-grid{ display:grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.list{ margin: 0; padding-left: 18px; color: var(--muted); }

.pill-row{ display:flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.pill{
  font-family: var(--mono);
  font-size: 12px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.04);
  padding: 7px 10px;
  border-radius: 999px;
  color: var(--muted);
}

.skills-grid{ display:grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.projects-grid{ display:grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }

.project-card{
  border: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(255,255,255,.07), rgba(255,255,255,.035));
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
  transition: transform .25s ease, box-shadow .25s ease;
}
.project-card::before{
  content:"";
  position:absolute; inset:-2px;
  background: radial-gradient(400px 200px at 20% 10%, rgba(51,182,255,.18), transparent 55%),
              radial-gradient(380px 200px at 90% 0%, rgba(124,92,255,.16), transparent 60%);
  opacity: 0;
  transition: opacity .35s ease;
  pointer-events:none;
}
.project-card:hover{ transform: translateY(-2px); }
.project-card:hover::before{ opacity: 1; }

.project-top{ display:flex; justify-content:space-between; gap: 12px; }

.badge{
  font-family: var(--mono);
  font-size: 12px;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--muted);
  height: fit-content;
}

.tag-row{ display:flex; flex-wrap: wrap; gap: 8px; margin: 12px 0 10px; }
.tag{
  font-size: 12px;
  padding: 6px 9px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.04);
  color: var(--muted);
}

.bullets{ margin: 0; padding-left: 18px; color: var(--muted); }
.project-actions{ display:flex; gap: 10px; margin-top: 14px; flex-wrap: wrap; }

/* Timeline (sans points bleus) */
.timeline{ display:grid; gap: 12px; margin-top: 12px; }
.t-item{ display: block; }
.t-dot{ display: none; }

.t-card{
  border: 1px solid var(--border);
  background: var(--panel);
  border-radius: var(--radius);
  padding: 16px;
}
.t-top{ display:flex; justify-content:space-between; gap: 10px; align-items: baseline; }

/* Contact */
.contact-grid{ display:grid; grid-template-columns: 1fr 1.2fr; gap: 14px; }
.contact-links{ display:grid; gap: 10px; }

.contact-link{
  padding: 12px 12px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.04);
  transition: transform .2s ease, background .2s ease, border-color .2s ease;
}
.contact-link:hover{
  transform: translateY(-1px);
  border-color: rgba(51,182,255,.35);
  background: rgba(51,182,255,.08);
}

.mono{ font-family: var(--mono); }

.field{ display:grid; gap: 6px; margin-top: 10px; }
label{ font-size: 13px; color: var(--muted); }

input, textarea{
  font-family: var(--font);
  font-size: 15px;
  padding: 12px 12px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.04);
  color: var(--text);
  outline: none;
}
textarea{ resize: vertical; min-height: 120px; }
textarea { max-height: 1500px; overflow-y: auto; }

input:focus, textarea:focus{
  border-color: rgba(51,182,255,.45);
  box-shadow: 0 0 0 4px rgba(51,182,255,.12);
}
.form-actions{ display:flex; gap: 10px; flex-wrap: wrap; margin-top: 12px; }

/* Footer */
.footer{
  padding: 26px 0 40px;
  border-top: 1px solid rgba(255,255,255,.08);
}
html[data-theme="light"] .footer{ border-top: 1px solid rgba(0,0,0,.08); }
.footer-row{ display:flex; justify-content:space-between; align-items:center; gap: 14px; }
.to-top{ color: var(--muted); }
.to-top:hover{ color: var(--text); }

/* Reveal (même rendu que ICEPULSE) */
.reveal{
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s, transform 0.7s;
  will-change: opacity, transform;
}

.reveal.is-visible{
  opacity: 1;
  transform: none;
}


/* Toast */
.toast{
  position: fixed;
  left: 50%;
  bottom: 18px;
  transform: translateX(-50%);
  background: rgba(0,0,0,.70);
  color: white;
  border: 1px solid rgba(255,255,255,.18);
  border-radius: 999px;
  padding: 10px 14px;
  box-shadow: var(--shadow);
  max-width: min(560px, calc(100% - 24px));
}

/* Formspree honeypot */
.hp-field{
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* Responsive */
@media (max-width: 920px){
  .hero-grid{ grid-template-columns: 1fr; }
  .about-grid{ grid-template-columns: 1fr; }
  .skills-grid{ grid-template-columns: 1fr 1fr; }
  .projects-grid{ grid-template-columns: 1fr; }
  .contact-grid{ grid-template-columns: 1fr; }
}

@media (max-width: 740px){

  /* Header au-dessus */
  .site-header{
    z-index: 1000;
  }

  /* Header: on laisse de l'air sur les côtés */
  .nav{
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 10px;

    padding: 10px 12px; /* espace gauche/droite */
  }

  /* burger à gauche */
  .nav-toggle{
    display: grid;
    place-items: center;
    order: 0;

    background: transparent;
    border: 1px solid var(--border);
    border-radius: 12px;
    width: 44px;
    height: 42px;
    cursor: pointer;

    position: relative;
    z-index: 1201;
  }

  .brand{ order: 1; }

  .nav-actions{
    order: 2;
    margin-left: auto;
  }

  /* Burger -> CROIX (3 spans, robuste) */
  .nav-toggle span{
    position: absolute;          /* on superpose */
    left: 50%;
    top: 50%;

    width: 22px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;

    margin: 0 !important;        /* écrase le margin desktop */
    transform-origin: center;
    transition: transform .25s ease, opacity .25s ease;
  }

  /* état fermé : 3 barres */
  .nav-toggle span:nth-child(1){ transform: translate(-50%, calc(-50% - 6px)); }
  .nav-toggle span:nth-child(2){ transform: translate(-50%, -50%); }
  .nav-toggle span:nth-child(3){ transform: translate(-50%, calc(-50% + 6px)); }

  /* état ouvert : vraie croix */
  .nav-toggle[aria-expanded="true"] span:nth-child(1){
    transform: translate(-50%, -50%) rotate(45deg);
  }
  .nav-toggle[aria-expanded="true"] span:nth-child(2){
    opacity: 0;
  }
  .nav-toggle[aria-expanded="true"] span:nth-child(3){
    transform: translate(-50%, -50%) rotate(-45deg);
  }

  /* Menu plein écran (opaque + profondeur) */
  .nav-links{
    position: fixed;
    top: 0;
    left: 0;
    height: 100dvh;
    width: 100%;

    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    gap: 8px;

    padding: 84px 20px 20px;

    background: var(--bg);                    /* opaque */
    border-right: 1px solid var(--border);    /* léger relief */
    box-shadow: 0 24px 70px rgba(0,0,0,.55);  /* profondeur */
    backdrop-filter: none;                    /* enlève l'effet verre */

    transform: translateX(-105%);
    transition: transform .25s ease;
    z-index: 1200;
  }

    /* Liens */
    .nav-links a{
    width: 100%;
    padding: 14px 14px;
    border-radius: 14px;
    font-size: 16px;

    border: 1px solid var(--border);     /* contour */
    background: transparent;              /* garde le fond du menu */
    }

    /* Au survol (et focus clavier) */
    .nav-links a:hover,
    .nav-links a:focus-visible{
    background: var(--panel);
    border-color: rgba(51,182,255,.35);
    color: var(--text);
    }

    /* Petit effet "appuyé" */
    .nav-links a:active{
    transform: translateY(1px);
    }


  .nav-links.is-open{
    transform: translateX(0);
  }
}


/* Reduced motion */
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  .btn:hover, .mini-link:hover, .contact-link:hover, .project-card:hover{ transform: none; }
  .reveal{ transition: none; transform: none; opacity: 1; }
  .project-card::before{ transition: none; }
}



#top { scroll-margin-top: 0; }
.section { scroll-margin-top: 90px; }