/* ═══════════════════════════════════════════════════
   SOS ÉCRANS — Design System partagé
   Montserrat · Noir/Blanc/Gris · Éditorial minimal
   ═══════════════════════════════════════════════════ */

*{margin:0;padding:0;box-sizing:border-box}
:root{
  --black:#000;--white:#fff;
  --g50:#f8f8f8;--g100:#f0f0f0;--g200:#e5e5e5;
  --g400:#bbb;--g500:#888;--g700:#444;--g900:#1a1a1a;
  --green:#1a1a1a;--red:#c0392b;
}
html{scroll-behavior:smooth}
body{
  font-family:'Montserrat',-apple-system,BlinkMacSystemFont,sans-serif;
  background:var(--white);color:var(--black);
  font-weight:300;line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
::selection{background:var(--black);color:var(--white)}

/* ═══ HEADER / NAV ═══ */
header{
  position:sticky;top:0;background:var(--white);
  border-bottom:1px solid var(--g200);z-index:200;
}
.header-bar{
  display:flex;justify-content:space-between;align-items:center;
  padding:0 32px;max-width:1400px;margin:0 auto;height:64px;
}
.logo{
  display:flex;align-items:center;gap:12px;
  text-decoration:none;color:var(--black);
}
.logo-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;flex-shrink:0;overflow:hidden;border-radius:4px;
}
.logo-mark img{width:36px;height:36px;object-fit:contain}
.logo-text{font-size:13px;font-weight:700;letter-spacing:.3em;text-transform:uppercase}
nav{display:flex;align-items:center;gap:0}
.nav-link{
  padding:8px 14px;font-size:10px;font-weight:600;letter-spacing:.2em;
  text-transform:uppercase;color:var(--g500);text-decoration:none;
  transition:color .2s;white-space:nowrap;
}
.nav-link:hover,.nav-link.active{color:var(--black)}
.nav-cta{
  margin-left:16px;padding:10px 20px;background:var(--black);color:var(--white);
  text-decoration:none;font-size:10px;font-weight:700;letter-spacing:.2em;
  text-transform:uppercase;transition:background .2s;
}
.nav-cta:hover{background:var(--g700)}
.nav-urgence{
  margin-left:8px;padding:10px 16px;background:var(--red);color:var(--white);
  text-decoration:none;font-size:10px;font-weight:700;letter-spacing:.15em;
  text-transform:uppercase;
}
.hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:4px;background:none;border:none;}
.hamburger span{display:block;width:22px;height:1px;background:var(--black)}
.mobile-nav{
  display:none;position:fixed;inset:0;background:var(--white);
  z-index:300;padding:80px 32px 40px;flex-direction:column;gap:0;
}
.mobile-nav.open{display:flex}
.mobile-nav a{
  padding:16px 0;font-size:13px;font-weight:600;letter-spacing:.3em;
  text-transform:uppercase;color:var(--black);text-decoration:none;
  border-bottom:1px solid var(--g100);
}
.mobile-close{
  position:absolute;top:20px;right:24px;font-size:24px;
  background:none;border:none;cursor:pointer;
}

/* ═══ HERO ═══ */
.hero{
  padding:100px 32px 80px;max-width:1100px;margin:0 auto;
}
.hero-label{
  font-size:10px;font-weight:700;letter-spacing:.4em;text-transform:uppercase;
  color:var(--g500);margin-bottom:24px;display:block;
}
h1{
  font-size:clamp(36px,6vw,72px);font-weight:200;letter-spacing:-.03em;
  line-height:1.05;margin-bottom:32px;
}
h1 em{font-style:normal;font-weight:700}
h1 strong{font-style:normal;font-weight:700}
.hero-lead{
  font-size:clamp(16px,2vw,20px);font-weight:300;color:var(--g700);
  max-width:680px;margin-bottom:48px;line-height:1.7;
}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}

/* ═══ TYPO ═══ */
h2{
  font-size:clamp(24px,3.5vw,40px);font-weight:200;letter-spacing:-.02em;
  margin:0 0 16px;line-height:1.15;
}
h3{font-size:18px;font-weight:600;letter-spacing:.02em;margin:0 0 12px}
h4{font-size:11px;font-weight:700;letter-spacing:.2em;text-transform:uppercase;margin:0 0 10px}
p{margin-bottom:18px;color:var(--g700);font-size:15px}
.lead{font-size:18px;font-weight:300;color:var(--g700);max-width:720px;line-height:1.7}
.divider{width:60px;height:1px;background:var(--black);margin:32px 0}
strong{font-weight:600;color:var(--black)}
a{color:var(--black);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}
.section-label{
  font-size:10px;font-weight:700;letter-spacing:.4em;text-transform:uppercase;
  color:var(--g500);margin-bottom:16px;display:block;
}

/* ═══ SECTIONS ═══ */
section{padding:80px 32px;max-width:1100px;margin:0 auto}
.section-border{border-top:1px solid var(--g200);padding-top:80px}
.full-width{max-width:none;padding-left:0;padding-right:0}
.full-width-inner{max-width:1100px;margin:0 auto;padding:0 32px}
.bg-dark{background:var(--black);color:var(--white)}
.bg-dark p,.bg-dark .section-label{color:var(--g200)}
.bg-dark h2,.bg-dark h3,.bg-dark strong{color:var(--white)}
.bg-gray{background:var(--g50)}

/* ═══ GRID / CARDS ═══ */
.grid{display:grid;gap:24px;margin:32px 0}
.grid-2{grid-template-columns:repeat(auto-fit,minmax(320px,1fr))}
.grid-3{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.grid-4{grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}
.card{
  padding:28px;border:1px solid var(--g200);background:var(--white);
  transition:all .25s;
}
.card:hover{border-color:var(--black);box-shadow:0 8px 24px rgba(0,0,0,.05)}
.card-num{
  display:inline-block;font-size:10px;font-weight:700;letter-spacing:.2em;
  color:var(--g400);margin-bottom:12px;
}
.card h3{margin-top:0;font-size:16px}
.card p{font-size:14px;margin-bottom:0}
.card-icon{
  width:40px;height:40px;background:var(--black);display:flex;
  align-items:center;justify-content:center;margin-bottom:20px;
}
.card-icon svg{color:var(--white)}

/* ═══ STATS ═══ */
.stat-card{padding:32px 24px;border:1px solid var(--g200);text-align:left}
.stat-num{font-size:52px;font-weight:200;letter-spacing:-.02em;line-height:1;margin-bottom:8px}
.stat-label{font-size:13px;font-weight:500;color:var(--g700);line-height:1.5;margin-bottom:8px}
.stat-source{font-size:10px;font-weight:500;letter-spacing:.1em;text-transform:uppercase;color:var(--g500)}

/* ═══ CALLOUTS ═══ */
.callout{padding:24px 28px;border-left:2px solid var(--black);background:var(--g50);margin:24px 0}
.callout p{margin-bottom:0;color:var(--g700);font-size:14px}
.callout-red{border-left-color:var(--red);background:#fdf8f8}
.callout-green{border-left-color:var(--green);background:#f8fdf9}

/* ═══ TAGS ═══ */
.tag{
  display:inline-block;padding:4px 10px;border:1px solid var(--g200);
  font-size:10px;font-weight:600;letter-spacing:.15em;text-transform:uppercase;
  color:var(--g700);margin-right:6px;margin-bottom:6px;text-decoration:none;
}
.tag:hover{border-color:var(--black);color:var(--black)}
.tag-black{background:var(--black);color:var(--white);border-color:var(--black)}
.tag-green{background:var(--green);color:var(--white);border-color:var(--green)}
.tag-red{background:var(--red);color:var(--white);border-color:var(--red)}

/* ═══ BOUTONS ═══ */
.btn{
  display:inline-block;padding:14px 32px;background:var(--black);color:var(--white);
  text-decoration:none;font-size:11px;font-weight:600;letter-spacing:.25em;
  text-transform:uppercase;transition:background .2s;cursor:pointer;
  border:none;font-family:inherit;
}
.btn:hover{background:var(--g700);color:var(--white)}
.btn-outline{
  background:transparent;color:var(--black);border:1px solid var(--black);
}
.btn-outline:hover{background:var(--black);color:var(--white)}
.btn-red{background:var(--red)}
.btn-red:hover{background:#a93226}
.btn-lg{padding:18px 40px;font-size:12px}

/* ═══ CTA BLOCK ═══ */
.cta-block{
  margin:40px 0;padding:56px 48px;border:1px solid var(--black);text-align:center;
}
.cta-block h2{margin-bottom:16px}
.cta-block p{max-width:560px;margin:0 auto 32px}

/* ═══ TABLES ═══ */
.table-wrap{overflow-x:auto;border:1px solid var(--g200);margin:24px 0}
table{width:100%;border-collapse:collapse;font-size:13px}
th{
  background:var(--g50);padding:14px 16px;text-align:left;
  font-size:10px;font-weight:700;letter-spacing:.15em;text-transform:uppercase;
  color:var(--g700);border-bottom:1px solid var(--g200);
}
td{padding:12px 16px;border-bottom:1px solid var(--g100);color:var(--g700)}
tr:hover td{background:var(--g50)}

/* ═══ LISTE CLEAN ═══ */
ul.clean{list-style:none;padding:0}
ul.clean li{
  padding:10px 0;border-bottom:1px solid var(--g100);
  font-size:14px;color:var(--g700);
}
ul.clean li::before{content:'—';display:inline-block;width:20px;color:var(--g400);margin-right:8px}

/* ═══ BREADCRUMB ═══ */
.breadcrumb{
  padding:16px 32px;max-width:1100px;margin:0 auto;
  font-size:11px;font-weight:500;letter-spacing:.1em;text-transform:uppercase;
  color:var(--g500);display:flex;gap:8px;align-items:center;
}
.breadcrumb a{color:var(--g500);text-decoration:none}
.breadcrumb a:hover{color:var(--black)}
.breadcrumb span{color:var(--g400)}

/* ═══ PAGE HEADER ═══ */
.page-header{
  padding:64px 32px 48px;max-width:1100px;margin:0 auto;
  border-bottom:1px solid var(--g200);margin-bottom:64px;
}

/* ═══ TÉMOIGNAGES ═══ */
.testimonial{
  padding:32px;border:1px solid var(--g200);position:relative;
}
.testimonial::before{
  content:'"';font-size:80px;font-weight:200;color:var(--g200);
  position:absolute;top:16px;right:24px;line-height:1;
}
.testimonial-text{font-size:16px;font-weight:300;line-height:1.7;margin-bottom:16px}
.testimonial-author{font-size:11px;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--g500)}

/* ═══ SOUTIENS ═══ */
.soutien-item{
  padding:20px;border:1px solid var(--g200);display:flex;
  align-items:flex-start;gap:16px;transition:border-color .2s;
}
.soutien-item:hover{border-color:var(--black)}
.soutien-logo{
  width:56px;height:56px;background:var(--g100);flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  font-size:10px;font-weight:700;text-align:center;color:var(--g700);
}
.soutien-name{font-size:14px;font-weight:700;margin-bottom:4px}
.soutien-role{font-size:12px;color:var(--g500)}
.soutien-quote{font-size:13px;color:var(--g700);margin-top:8px;font-style:italic}

/* ═══ FLOATING 3018 ═══ */
.float-3018{
  position:fixed;bottom:32px;right:32px;z-index:100;
  background:var(--red);color:var(--white);
  padding:12px 20px;font-size:12px;font-weight:700;
  letter-spacing:.2em;text-decoration:none;
  box-shadow:0 4px 16px rgba(192,57,43,.4);
  transition:transform .2s;
}
.float-3018:hover{transform:translateY(-2px);color:var(--white)}

/* ═══ FORMULAIRE ═══ */
.form-group{margin-bottom:24px}
.form-group label{
  display:block;font-size:10px;font-weight:700;letter-spacing:.2em;
  text-transform:uppercase;color:var(--g500);margin-bottom:8px;
}
.form-group input,.form-group select,.form-group textarea{
  width:100%;padding:12px 16px;border:1px solid var(--g200);
  background:var(--white);font-family:inherit;font-size:14px;
  color:var(--black);outline:none;transition:border-color .2s;
}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{border-color:var(--black)}
.form-group textarea{resize:vertical;min-height:120px}

/* ═══ VIDÉO PLACEHOLDER ═══ */
.video-placeholder{
  aspect-ratio:16/9;background:var(--g900);display:flex;
  align-items:center;justify-content:center;position:relative;
  overflow:hidden;cursor:pointer;
}
.video-play{
  width:72px;height:72px;border:2px solid rgba(255,255,255,.5);
  border-radius:50%;display:flex;align-items:center;justify-content:center;
  transition:all .2s;
}
.video-placeholder:hover .video-play{border-color:var(--white);transform:scale(1.1)}

/* ═══ LETTRE FONDATEUR ═══ */
.letter{
  max-width:680px;margin:0 auto;padding:56px 0;
  font-size:17px;font-weight:300;line-height:1.9;color:var(--g700);
}
.letter .salutation{font-size:20px;font-weight:600;color:var(--black);margin-bottom:32px}
.letter .signature{
  margin-top:48px;font-size:14px;font-weight:600;
  color:var(--black);border-top:1px solid var(--g200);padding-top:32px;
}
.letter .engagement{
  margin:40px 0;padding:32px;border-left:3px solid var(--black);
  font-size:18px;font-weight:300;color:var(--black);
}

/* ═══ DON / CALCULATEUR ═══ */
.don-amount{
  display:flex;gap:12px;flex-wrap:wrap;margin:24px 0;
}
.don-btn{
  padding:16px 24px;border:1px solid var(--g200);background:var(--white);
  font-family:inherit;font-size:16px;font-weight:600;cursor:pointer;
  transition:all .2s;min-width:80px;text-align:center;
}
.don-btn.active,.don-btn:hover{
  background:var(--black);color:var(--white);border-color:var(--black);
}
.calculateur{
  padding:32px;background:var(--g50);border:1px solid var(--g200);margin:32px 0;
}
.calculateur .result{
  font-size:32px;font-weight:200;color:var(--black);margin:16px 0 8px;
}
.don-input{
  width:100%;padding:16px;border:1px solid var(--g200);
  font-family:inherit;font-size:24px;font-weight:200;
  text-align:center;outline:none;transition:border-color .2s;
}
.don-input:focus{border-color:var(--black)}

/* ═══ ANIMATION SVG STORYBOARD ═══ */
.storyboard{
  background:var(--g900);padding:60px 32px;
  display:flex;align-items:center;justify-content:center;
  min-height:280px;position:relative;overflow:hidden;
}

/* ═══ FOOTER ═══ */
footer{
  background:var(--black);color:var(--g400);
  padding:64px 32px 40px;margin-top:100px;
}
footer .container{max-width:1100px;margin:0 auto}
.footer-grid{
  display:grid;
  grid-template-columns:2fr 1fr 1fr 1fr;
  gap:48px;margin-bottom:48px;
}
footer h4{color:var(--white);font-size:10px;letter-spacing:.25em;margin-bottom:16px}
footer p{font-size:12px;color:var(--g500);line-height:1.8;margin-bottom:0}
footer a{color:var(--g400);text-decoration:none;font-size:12px;display:block;padding:3px 0}
footer a:hover{color:var(--white)}
.footer-bottom{
  padding-top:24px;border-top:1px solid rgba(255,255,255,.08);
  font-size:10px;letter-spacing:.1em;text-transform:uppercase;
  color:var(--g700);display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;
}
.footer-logo{
  font-size:16px;font-weight:700;letter-spacing:.3em;
  text-transform:uppercase;color:var(--white);margin-bottom:16px;
}
.footer-rna{font-size:10px;letter-spacing:.1em;color:var(--g700);margin-top:8px}

/* ═══ RESPONSIVE ═══ */
@media(max-width:1024px){
  .footer-grid{grid-template-columns:1fr 1fr}
  nav .nav-link:nth-child(n+5){display:none}
}
@media(max-width:768px){
  .header-bar{padding:0 20px}
  nav{display:none}
  .hamburger{display:flex}
  .hero{padding:60px 20px 60px}
  section{padding:56px 20px}
  .breadcrumb{padding:12px 20px}
  .page-header{padding:48px 20px 36px}
  .footer-grid{grid-template-columns:1fr}
  footer{padding:48px 20px 32px}
  .float-3018{bottom:76px;right:20px;padding:10px 16px;font-size:11px}
  .cta-block{padding:40px 24px}
  .letter{padding:40px 0;font-size:16px}
  h1{font-size:clamp(30px,8vw,48px)}
  h2{font-size:clamp(22px,5vw,32px)}
  body{padding-bottom:calc(60px + env(safe-area-inset-bottom))}
  .bottom-nav{display:block}
}

/* ═══ BOTTOM NAV (mobile iPhone) ═══ */
.bottom-nav{
  display:none;position:fixed;bottom:0;left:0;right:0;
  background:var(--white);border-top:1px solid var(--g200);
  z-index:250;padding-bottom:env(safe-area-inset-bottom);
}
.bottom-nav-inner{
  display:flex;justify-content:space-around;align-items:stretch;height:56px;
}
.bn-item{
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  flex:1;gap:3px;text-decoration:none;color:var(--g500);
  font-size:9px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;
  padding:6px 2px;border:none;background:none;cursor:pointer;
  transition:color .15s;font-family:inherit;
}
.bn-item:hover,.bn-item.active{color:var(--black)}
.bn-item svg{width:22px;height:22px;flex-shrink:0}
.bn-item.active svg{stroke-width:2.5}

/* ═══ DIALOGUE SUB-NAV ═══ */
.dialogue-nav{background:var(--g50);border-bottom:1px solid var(--g200);overflow-x:auto;-webkit-overflow-scrolling:touch}
.dialogue-nav-inner{display:flex;align-items:stretch;max-width:1400px;margin:0 auto;padding:0 32px}
.dn-home{display:flex;align-items:center;font-size:10px;font-weight:700;letter-spacing:.15em;text-transform:uppercase;color:var(--g500);text-decoration:none;padding:14px 20px 14px 0;margin-right:16px;border-right:1px solid var(--g200);white-space:nowrap;flex-shrink:0}
.dn-home:hover{color:var(--black)}
.dn-step{display:flex;align-items:center;gap:6px;font-size:9px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--g500);text-decoration:none;padding:14px 12px;border-bottom:2px solid transparent;white-space:nowrap;transition:color .15s,border-color .15s}
.dn-step:hover{color:var(--black)}
.dn-step.active{color:var(--black);border-bottom-color:var(--black)}
.dn-num{display:inline-flex;align-items:center;justify-content:center;width:16px;height:16px;background:var(--g200);color:var(--g700);font-size:9px;font-weight:800;flex-shrink:0;line-height:1}
.dn-step.active .dn-num{background:var(--black);color:var(--white)}
@media(max-width:600px){.dialogue-nav-inner{padding:0 16px}.dn-step{padding:12px 8px;font-size:8px}.dn-home{padding:12px 12px 12px 0}}