:root{
  --ivoire:#FAFAF7;
  --ivoire-2:#F3F1EA;
  --nuit:#0F172A;
  --nuit-2:#1E293B;
  --texte:#1A1A18;
  --texte-inv:#F5F3EE;
  --swim:#3B82C4;
  --bike:#E0A020;
  --run:#5B9E6A;
  --muted:#6B7280;
  --muted-inv:#94A3B8;
  --border:#E5E4DF;
  --border-dark:#1E293B;
  --accent:#F05A28;
  --heading-font:'DM Serif Display', serif;
  --body-font:'Syne', sans-serif;
  --mono:'JetBrains Mono', monospace;
  --blanc:#FFFFFF;
  --border-fort:#CFC9BB;
  --accent-doux:#FDEBE3;
  --swim-d:#2E6A9F;
  --bike-d:#B87F12;
  --run-d:#437A4F;
}

*{box-sizing:border-box; margin:0; padding:0;}
html{scroll-behavior:smooth;}
img, svg, video {
  max-width: 100%;
  height: auto;
}
.table-container {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin-bottom: 24px;
}
.table-container table {
  min-width: 600px;
}
body{
  font-family:var(--body-font);
  background:var(--ivoire);
  color:var(--texte);
  font-size:17px;
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
  font-feature-settings:"ss01";
}
h1,h2,h3,h4{font-family:var(--heading-font); font-weight:400; line-height:1.05; letter-spacing:-0.01em;}
a{color:inherit; text-decoration:none;}
button{font-family:inherit; cursor:pointer; border:none; background:none;}
::selection{background:var(--accent); color:#fff;}

/* NAV */
.nav{
  position:sticky; top:0; z-index:100;
  background:rgba(250,250,247,0.85);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border);
}
.nav-inner{
  max-width:1280px; margin:0 auto;
  padding:18px 40px;
  display:flex; align-items:center; justify-content:space-between;
}
.logo{
  font-family:var(--heading-font);
  font-size:26px;
  display:flex; align-items:center; gap:10px;
  letter-spacing:-0.02em;
}
.logo-mark{
  width:32px; height:32px;
  display:inline-flex; align-items:center; justify-content:center;
  flex-shrink:0;
}
.nav-links{display:flex; gap:32px; align-items:center; font-size:15px;}
.nav-links > a{color:var(--muted); transition:color .2s;}
.nav-links > a:hover{color:var(--texte);}
.nav-links > a.nav-active{color:var(--texte); font-weight:600;}
.nav-right{display:flex; align-items:center; gap:20px;}

.lang-switch{
  display:flex; gap:2px; padding:3px;
  background:var(--ivoire-2);
  border-radius:999px;
  font-size:12px; font-weight:600;
  letter-spacing:0.04em;
}
.lang-switch button{
  padding:6px 12px; border-radius:999px;
  color:var(--muted);
  transition:all .2s;
}
.lang-switch button.active{
  background:var(--nuit); color:var(--texte-inv);
}

/* BUTTONS */
.btn{
  display:inline-flex; align-items:center; gap:8px;
  padding:14px 24px;
  background:var(--accent); color:#fff;
  border-radius:999px;
  font-weight:600; font-size:15px;
  letter-spacing:-0.005em;
  transition:transform .15s, filter .15s;
}
.btn:hover{ filter:brightness(1.08); transform:translateY(-1px);}
.btn-sm{padding:10px 18px; font-size:14px;}
.btn-ghost{background:transparent; color:var(--texte); border:1px solid var(--border);}
.btn-ghost:hover{background:var(--ivoire-2); filter:none;}
.btn-primary-cta{background:var(--accent); color:#fff;}
.btn-primary-cta:hover{filter:brightness(1.08);}

/* GENERAL SECTIONS */
section{position:relative;}
.section{
  max-width:1280px; margin:0 auto;
  padding:80px 40px;
}
.section-eyebrow{
  font-family:var(--mono); font-size:12px;
  text-transform:uppercase; letter-spacing:0.14em;
  color:var(--muted);
  margin-bottom:20px;
  display:flex; align-items:center; gap:12px;
}
.section-eyebrow::before{
  content:''; display:inline-block;
  width:8px; height:8px; border-radius:50%;
  background:var(--accent);
}
.section h2{
  font-size:clamp(34px, 4.2vw, 52px);
  max-width:780px;
  margin-bottom:18px;
  line-height:1.05;
}
.section-sub{
  font-size:18px; color:var(--muted);
  max-width:640px;
  margin-bottom:48px;
}
.section-white{background:#fff;}
.section-ivoire{background:var(--ivoire-2);}

/* FOOTER (LOVABLE INSPIRED) */
footer{
  background:var(--ivoire-2);
  padding:80px 40px 30px;
  border-top:1px solid var(--border);
  color:var(--texte);
}
.footer-inner{
  max-width:1280px;
  margin:0 auto;
}
.footer-grid{
  display:grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap:60px;
  margin-bottom:60px;
}
.footer-brand{
  display:flex;
  flex-direction:column;
  gap:20px;
}
.footer-logo{
  font-family:var(--heading-font);
  font-size:26px;
  display:flex;
  align-items:center;
  gap:10px;
  letter-spacing:-0.02em;
  color:var(--texte);
}
.footer-desc{
  font-size:15px;
  color:var(--muted);
  line-height:1.5;
  max-width:320px;
}
.footer-col{
  display:flex;
  flex-direction:column;
  gap:20px;
}
.footer-col h4{
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:0.12em;
  text-transform:uppercase;
  color:var(--muted);
}
.footer-col ul{
  list-style:none;
  display:flex;
  flex-direction:column;
  gap:12px;
}
.footer-col ul a{
  font-size:15px;
  color:var(--texte);
  transition:color .2s;
}
.footer-col ul a:hover{
  color:var(--accent);
}
.footer-bottom{
  border-top:1px solid var(--border);
  padding-top:30px;
  display:flex;
  justify-content:space-between;
  align-items:center;
  font-family:var(--mono);
  font-size:13px;
  color:var(--muted);
}

.nav-toggle {
  display: none;
}

@media (max-width:900px){
  .nav-links{display:none;}
  .footer-grid{grid-template-columns:1fr; gap:40px;}
  .footer-bottom{flex-direction:column; gap:16px; text-align:center;}
  
  /* Mobile menu styles */
  .nav-inner {
    padding: 14px 20px;
  }
  .nav-toggle {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    width: 24px;
    height: 16px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 102;
  }
  .nav-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--texte);
    border-radius: 2px;
    transition: transform 0.25s ease, opacity 0.25s ease;
  }
  .nav-open .nav-toggle span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }
  .nav-open .nav-toggle span:nth-child(2) {
    opacity: 0;
  }
  .nav-open .nav-toggle span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }
  .nav-open .nav-links {
    display: flex !important;
    flex-direction: column;
    position: fixed;
    top: 65px; /* Matches the smaller nav height on mobile */
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--ivoire);
    padding: 40px 24px;
    gap: 20px;
    font-size: 18px;
    z-index: 99;
    border-top: 1px solid var(--border);
    animation: navSlideDown 0.3s ease-out forwards;
    overflow-y: auto;
  }
  .nav-open .nav-links a {
    color: var(--texte);
    font-weight: 600;
    border-bottom: 1px solid var(--border);
    padding-bottom: 12px;
    width: 100%;
  }
  .nav-open .nav-links a.nav-active {
    color: var(--accent);
    border-bottom-color: var(--accent);
  }
  .nav-open {
    overflow: hidden;
  }
  @keyframes navSlideDown {
    from {
      opacity: 0;
      transform: translateY(-10px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  /* Grid & General Section Adaptations */
  .section {
    padding: 48px 20px;
  }
  
  /* Make all main grid layouts stack nicely under 768px */
  .pricing-grid,
  .footer-grid,
  .supporter-inner,
  .hero-container,
  .simulator-layout {
    grid-template-columns: 1fr !important;
    gap: 32px !important;
  }
  
  .courses-grid,
  .blog-grid {
    grid-template-columns: 1fr !important;
    gap: 24px !important;
  }
  
  .gpx-import {
    flex-direction: column;
    text-align: center;
    padding: 20px;
    gap: 16px;
  }
  
  .course-details {
    flex-wrap: wrap;
    gap: 10px 16px;
  }
  
  .feature-mockup {
    padding: 20px !important;
    min-height: auto !important;
  }
  
  .demo-content {
    padding: 20px !important;
  }
}

@media (max-width: 480px) {
  .sim-nutrition-intakes-list {
    grid-template-columns: 1fr !important;
  }
  .price-card {
    padding: 32px 24px !important;
  }
  .comparison-section {
    padding: 40px 16px !important;
  }
  .nav-inner {
    padding: 12px 16px;
  }
}

/* --- Navigation : lien de connexion discret, l'action principale est le bouton --- */
.nav-login{
  color:var(--muted);
  font-size:14px; font-weight:500;
  transition:color .15s;
  white-space:nowrap;
}
.nav-login:hover{color:var(--texte);}

/* --- Ancres : le titre ne doit pas atterrir sous le header collant --- */
section[id]{scroll-margin-top:88px;}
@media (max-width:768px){
  section[id]{scroll-margin-top:72px;}
}

/* ===================================================================
   Budget de mouvement — trois courbes, quatre durées.
   Toute transition du site pioche ici : la décision d'animation se
   prend une fois, pas à chaque composant. Tout est en « out » —
   un départ lent se lit comme de la latence.
   =================================================================== */
:root{
  --dur-hover:150ms;   /* survols, changements de couleur */
  --dur-state:220ms;   /* ouverture, bascule d'état */
  --dur-enter:500ms;   /* entrée en scène */
  --dur-ambient:800ms; /* effets décoratifs qui se jouent seuls */

  --ease-out:cubic-bezier(0,0,.2,1);        /* défaut */
  --ease-quint:cubic-bezier(.22,1,.36,1);   /* grands déplacements */
  --ease-back:cubic-bezier(.34,1.56,.64,1); /* micro-interactions seulement */
}

/* --- Apparition au scroll -----------------------------------------
   .rv n'est masqué que si js/reveal.js a posé .js-reveal sur <html>.
   Sans JavaScript, tout s'affiche normalement. */
.js-reveal .rv{
  opacity:0;
  transform:translateY(20px);
  transition:opacity var(--dur-enter) var(--ease-out),
             transform var(--dur-enter) var(--ease-out);
}
.js-reveal .rv.is-visible{opacity:1; transform:none;}

.rv-d1{transition-delay:80ms}   .rv-d2{transition-delay:160ms}
.rv-d3{transition-delay:240ms}  .rv-d4{transition-delay:320ms}
.rv-d5{transition-delay:400ms}  .rv-d6{transition-delay:480ms}
.rv-d7{transition-delay:560ms}  .rv-d8{transition-delay:640ms}

@media (prefers-reduced-motion:reduce){
  .js-reveal .rv{opacity:1; transform:none; transition:none;}
}

/* --- Barre mobile : logo + action principale + menu, rien d'autre ------ */
@media (max-width:900px){
  .nav-right{gap:12px;}
  .nav-right .btn-sm{padding:9px 15px; font-size:13.5px;}

  /* le sélecteur de langue et la connexion vivent dans le menu déroulant */
  .nav-open .nav-links .nav-login{
    font-size:18px; font-weight:600; color:var(--texte);
    border-bottom:1px solid var(--border); padding-bottom:12px; width:100%;
  }
  .nav-open .nav-links .lang-switch{
    margin-top:8px; align-self:flex-start;
  }
  /* fermés, ils ne doivent pas réapparaître dans la barre */
  .nav-links .nav-login,
  .nav-links .lang-switch{display:none;}
  .nav-open .nav-links .nav-login{display:block;}
  .nav-open .nav-links .lang-switch{display:inline-flex;}
}