:root{
  --bg:#edf3f8;
  --bg-2:#d9e4ef;
  --paper:#f8fbfd;
  --paper-strong:#ffffff;
  --text:#1f2f3f;
  --muted:#607181;
  --line:#c7d5e2;
  --line-soft:#dbe6ef;

  --accent:#2b6ea3;
  --accent-2:#5b92bf;
  --accent-3:#c8d9e8;
  --accent-4:#163a59;

  --dark:#142c43;
  --dark-2:#254a68;

  --sand:#caa06a;
  --sand-soft:#e9dcc8;

  --success:#1d7a52;
  --error:#b13f3f;

  --shadow:0 18px 44px rgba(20,46,74,.10);
  --shadow-soft:0 10px 26px rgba(20,46,74,.08);

  --radius:22px;
  --container:1180px;
}
*,
*::before,
*::after{
  box-sizing:border-box;
}

html{
  scroll-behavior:smooth;
}

body{
  margin:0;
  font-family:Arial, Helvetica, sans-serif;
  color:var(--text);
  background:
    radial-gradient(circle at top left, rgba(198,219,239,.34), transparent 28%),
    radial-gradient(circle at top right, rgba(62,142,216,.16), transparent 24%),
    radial-gradient(circle at bottom left, rgba(21,101,192,.10), transparent 30%),
    linear-gradient(180deg, #f8fbfe 0%, #eef3f8 45%, #e8eff6 100%);
  line-height:1.6;
}

img{
  max-width:100%;
  display:block;
}

a{
  color:inherit;
  text-decoration:none;
}

p{
  margin:0 0 1rem;
}

h1,h2,h3,h4{
  margin:0 0 .8rem;
  line-height:1.15;
  color:var(--dark);
}

h1{
  font-size:clamp(2.1rem, 4vw, 3.8rem);
  letter-spacing:-.03em;
}

h2{
  font-size:clamp(1.8rem, 3vw, 2.8rem);
  letter-spacing:-.02em;
}

h3{
  font-size:1.25rem;
}

h4{
  font-size:1rem;
}

ul{
  margin:0;
  padding-left:1.2rem;
}

section{
  padding:56px 0;
}

.container{
  width:min(var(--container), calc(100% - 32px));
  margin:0 auto;
}

/* HEADER */
.site-header{
  position:sticky;
  top:0;
  z-index:20;
  backdrop-filter:blur(14px);
  background:rgba(248,251,254,.88);
  border-bottom:1px solid rgba(21,101,192,.14);
  box-shadow:0 8px 28px rgba(20,46,74,.06);
}

.header-inner{
  min-height:84px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:22px;
  padding:12px 0;
}

.brand{
  display:flex;
  align-items:center;
  gap:16px;
  min-width:0;
}

.logo{
  width:102px;
  height:auto;
  object-fit:contain;
  border-radius:14px;
  box-shadow:0 8px 22px rgba(0,0,0,.16);
  background-color:#10293f;
}

.brand span:last-child{
  display:flex;
  flex-direction:column;
  font-weight:800;
  font-size:1.05rem;
  line-height:1.05;
  color:var(--dark);
}

.brand small{
  margin-top:4px;
  font-size:.72rem;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--muted);
  font-weight:700;
}

.nav{
  display:flex;
  align-items:center;
  gap:8px;
  flex-wrap:wrap;
}

.nav a{
  padding:10px 14px;
  border-radius:999px;
  color:var(--muted);
  font-size:.95rem;
  font-weight:700;
  transition:background .2s ease,color .2s ease, box-shadow .2s ease, transform .2s ease;
}

.nav a:hover{
  background:linear-gradient(135deg, rgba(198,219,239,.42) 0%, rgba(62,142,216,.18) 100%);
  color:var(--accent-4);
  box-shadow:var(--shadow-soft);
  transform:translateY(-1px);
}

/* BUTTONS */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:14px 22px;
  border-radius:999px;
  border:1px solid transparent;
  background:linear-gradient(135deg, var(--accent-4) 0%, var(--accent) 45%, var(--accent-2) 100%);
  color:#fff;
  font-weight:700;
  letter-spacing:.01em;
  box-shadow:0 14px 30px rgba(22,58,89,.24);
  transition:transform .2s ease, box-shadow .2s ease, filter .2s ease;
  cursor:pointer;
}

.btn:hover{
  transform:translateY(-2px);
  box-shadow:0 18px 34px rgba(21,101,192,.34);
  filter:saturate(1.08) brightness(1.02);
}

.btn-outline{
  background:rgba(248,251,254,.86);
  color:var(--accent-4);
  border-color:rgba(21,101,192,.24);
  box-shadow:none;
}

.btn-outline:hover{
  background:#edf5fc;
}

/* SECTION IDENTITIES */
.hero{
  padding:72px 0 40px;
  background:
    radial-gradient(circle at top left, rgba(202,160,106,.14), transparent 30%),
    radial-gradient(circle at bottom right, rgba(91,146,191,.18), transparent 38%),
    linear-gradient(135deg, #163a59 0%, #2b6ea3 50%, #254a68 100%);
  position: relative;
  overflow: hidden;
}

.band{
  background:
    linear-gradient(180deg, rgba(235,243,250,.78), rgba(219,230,240,.58));
  border-top:1px solid rgba(21,101,192,.10);
  border-bottom:1px solid rgba(21,101,192,.10);
}

#qui-sommes-nous{
  background:
    radial-gradient(circle at right top, rgba(198,219,239,.24), transparent 30%),
    linear-gradient(180deg, #f6fafe 0%, #eaf2f9 100%);
  padding:70px 0;
  border-top:1px solid #d6e3ef;
  border-bottom:1px solid #d6e3ef;
}

#entreprise{
  background:linear-gradient(180deg, rgba(255,255,255,.48) 0%, rgba(244,249,253,.22) 100%);
}

#contact{
  background:
    radial-gradient(circle at left bottom, rgba(62,142,216,.10), transparent 25%),
    linear-gradient(180deg, #f4f9fd 0%, #e8f1f9 100%);
  border-top:1px solid rgba(21,101,192,.10);
}

.separator-wrap{
  padding:28px 0;
}

.separator-photo{
  overflow:hidden;
  border-radius:28px;
  box-shadow:var(--shadow);
  border:1px solid rgba(21,101,192,.14);
}

.separator-photo img{
  width:100%;
  height:320px;
  object-fit:cover;
}

/* HEADINGS */
.eyebrow{
  display:inline-block;
  margin-bottom:16px;
  padding:8px 14px;
  border-radius:999px;
  background:linear-gradient(135deg, rgba(198,219,239,.55), rgba(62,142,216,.18));
  color:var(--accent-4);
  font-weight:800;
  font-size:.82rem;
  letter-spacing:.06em;
  text-transform:uppercase;
}

.section-head{
  margin-bottom:28px;
}

.section-head p{
  max-width:780px;
  color:var(--muted);
}

/* LAYOUTS */
.hero-grid,
.grid-2,
.grid-3,
.contact-wrap,
.footer-box,
.hero-points,
.contact-strip,
.partner-classes{
  display:grid;
  gap:24px;
}

.hero-grid{
  grid-template-columns:1.15fr .85fr;
  align-items:start;
}

.grid-2{
  grid-template-columns:repeat(2, minmax(0, 1fr));
}

.grid-3{
  grid-template-columns:repeat(3, minmax(0, 1fr));
}

.contact-wrap{
  grid-template-columns:1fr 1.1fr;
}

.hero-points{
  grid-template-columns:repeat(2, minmax(0, 1fr));
  margin-top:26px;
}

.contact-strip{
  grid-template-columns:1fr;
  margin:22px 0 20px;
}

.partner-classes{
  grid-template-columns:repeat(3, minmax(0, 1fr));
  margin-top:20px;
}

.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:24px;
}

.list li{
  margin-bottom:10px;
}

.list li::marker{
  color:var(--accent);
}

/* CARDS */
.hero-copy,
.hero-panel,
.card,
.contact-box,
.partner-box,
.class-card,
.metric,
.mini-card{
  background:linear-gradient(180deg, rgba(255,255,255,.60) 0%, rgba(246,250,253,.58) 100%);
  border:1px solid rgba(21,101,192,.14);
  box-shadow:var(--shadow);
  border-radius:var(--radius);
}

.hero-copy,
.hero-panel,
.contact-box,
.partner-box,
.why-box,
.card{
  padding:30px;
}

.mini-card,
.class-card{
  padding:18px 18px;
}

.hero-copy{
  position:relative;
  overflow:hidden;
}

.hero-copy::before{
  content:"";
  position:absolute;
  inset:auto -60px -60px auto;
  width:180px;
  height:180px;
  background:radial-gradient(circle, rgba(198,219,239,.30), transparent 70%);
  pointer-events:none;
}

.hero-panel-top p,
.hero-copy p{
  color:var(--text);
}

.card:hover,
.partner-box:hover,
.class-card:hover,
.contact-box:hover,
.mini-card:hover{
  transform:translateY(-5px);
  box-shadow:0 24px 42px rgba(20,46,74,.13);
  border-color:rgba(21,101,192,.22);
  transition:transform .22s ease, box-shadow .22s ease, border-color .22s ease;
}

.card-icon{
  width:54px;
  height:54px;
  border-radius:16px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:1.6rem;
  background:linear-gradient(135deg, rgba(200,217,232,.56), rgba(202,160,106,.16));
  box-shadow:var(--shadow-soft);
  margin-bottom:14px;
}

.classe{
  color:var(--accent-4);
}

.contact-point{
  width:100%;
  box-sizing:border-box;
  padding:14px 16px;
  border:1px solid #d8e4ee;
  border-radius:16px;
  background:linear-gradient(180deg, #ffffff 0%, #f0f6fb 100%);
  box-shadow:var(--shadow-soft);
}

.contact-point + .contact-point{
  margin-top:14px;
}

.contact-point h4{
  margin-bottom:6px;
}

.contact-point p{
  margin:0;
  color:var(--muted);
}

.contact-chip{
  display:flex;
  flex-direction:column;
  gap:4px;
  padding:14px 16px;
  border-radius:16px;
  border:1px solid rgba(21,101,192,.14);
  background:rgba(255,255,255,.58);
  box-shadow:var(--shadow-soft);
}

.contact-chip span:first-child{
  font-size:.8rem;
  text-transform:uppercase;
  letter-spacing:.06em;
  color:var(--muted);
  font-weight:700;
}

.contact-chip a{
  font-weight:800;
  color:var(--accent-4);
}

.partenariat-steps{
  display:grid;
  gap:16px;
}

.partenariat-step{
  padding:18px 20px;
  border-radius:16px;
  background:linear-gradient(180deg, #ffffff 0%, #edf5fb 100%);
  border:1px solid #d8e4ee;
  box-shadow:var(--shadow-soft);
}

.partenariat-step h4{
  margin-bottom:8px;
  color:var(--accent-4);
}

.class-card{
  min-height:100%;
}

/* SPECIAL DARK BLOCK */
.why-box{
  padding:30px;
  background:linear-gradient(135deg, #142c43 0%, #163a59 52%, #2f648f 100%);
  color:#fff;
  border-radius:var(--radius);
  box-shadow:0 22px 40px rgba(20,46,74,.18);
}

.why-box h2,
.why-box h3,
.why-box h4,
.why-box p,
.why-box li{
  color:#fff;
}

.why-box .section-head p{
  color:rgba(255,255,255,.84);
}

/* FORMS */
.contact-form{
  display:grid;
  gap:18px;
}

.form-row{
  display:grid;
  grid-template-columns:repeat(2, minmax(0, 1fr));
  gap:16px;
}

label{
  display:block;
  margin-bottom:8px;
  font-weight:700;
  color:var(--dark);
}

input,
textarea{
  width:100%;
  border:1px solid #cfdeea;
  background:#fcfeff;
  color:var(--text);
  border-radius:16px;
  padding:14px 16px;
  font:inherit;
  outline:none;
  transition:border-color .2s ease, box-shadow .2s ease, background .2s ease;
}

input:focus,
textarea:focus{
  border-color:rgba(21,101,192,.42);
  box-shadow:0 0 0 4px rgba(21,101,192,.10);
  background:#ffffff;
}

textarea{
  min-height:170px;
  resize:vertical;
}

.checkbox{
  display:flex;
  align-items:flex-start;
  gap:12px;
  margin:4px 0 2px;
}

.checkbox input{
  width:18px;
  height:18px;
  margin-top:3px;
  padding:0;
}

.checkbox span{
  color:var(--muted);
  font-weight:500;
}

.flash{
  margin-bottom:16px;
  padding:14px 16px;
  border-radius:16px;
  font-weight:700;
  border:1px solid transparent;
}

.flash.success{
  background:rgba(29,122,82,.10);
  color:var(--success);
  border-color:rgba(29,122,82,.20);
}

.flash.error{
  background:rgba(177,63,63,.10);
  color:var(--error);
  border-color:rgba(177,63,63,.18);
}

.sr-only{
  position:absolute !important;
  width:1px !important;
  height:1px !important;
  padding:0 !important;
  margin:-1px !important;
  overflow:hidden !important;
  clip:rect(0,0,0,0) !important;
  white-space:nowrap !important;
  border:0 !important;
}

/* FOOTER */
.site-footer{
  padding:22px 0 34px;
  background:linear-gradient(180deg, rgba(22,50,74,.04), rgba(22,50,74,.10));
  border-top:1px solid rgba(21,101,192,.12);
}

.footer-box{
  grid-template-columns:repeat(2, minmax(0, 1fr));
  align-items:center;
  gap:18px;
  color:var(--muted);
  font-size:.95rem;
}

/* HELPERS */
.metric{
  padding:18px;
  text-align:center;
}

.metric strong{
  display:block;
  font-size:1.7rem;
  line-height:1;
  margin-bottom:6px;
  color:var(--accent-4);
}

.mini-card strong{
  display:block;
  margin-bottom:8px;
  color:var(--accent-4);
}

/* RESPONSIVE */
@media (max-width: 1080px){
  .hero-grid,
  .contact-wrap,
  .grid-3,
  .partner-classes{
    grid-template-columns:1fr;
  }

  .grid-2{
    grid-template-columns:1fr;
  }

  .hero-points{
    grid-template-columns:1fr;
  }

  .separator-photo img{
    height:260px;
  }
}

@media (max-width: 820px){
  .header-inner{
    flex-direction:column;
    align-items:flex-start;
  }

  .nav{
    width:100%;
    gap:10px;
  }

  .nav a{
    padding:10px 12px;
  }

  .brand{
    align-items:center;
  }

  .logo{
    width:86px;
  }

  .form-row,
  .footer-box{
    grid-template-columns:1fr;
  }

  section{
    padding:44px 0;
  }

  .hero{
    padding-top:46px;
  }

  .hero-copy,
  .hero-panel,
  .contact-box,
  .partner-box,
  .why-box,
  .card{
    padding:22px;
  }
}

@media (max-width: 560px){
  .container{
    width:min(var(--container), calc(100% - 20px));
  }

  h1{
    font-size:2rem;
  }

  h2{
    font-size:1.7rem;
  }

  .hero-actions{
    flex-direction:column;
    align-items:stretch;
  }

  .btn,
  .btn-outline{
    width:100%;
  }

  .nav{
    display:grid;
    grid-template-columns:1fr 1fr;
  }

  .nav a{
    text-align:center;
  }

  .separator-photo img{
    height:210px;
  }

  .contact-chip,
  .contact-point,
  .partenariat-step{
    padding:14px;
  }
}

.footer-links-legales{
  margin-top:15px;
  text-align:right;
  font-size:0.95rem;
}

.footer-links-legales a{
  color:var(--dark);
  text-decoration:none;
  margin:0 8px;
}

.footer-links-legales a:hover{
  text-decoration:underline;
}

.footer-links-legales span{
  color:var(--muted);
}

/* =========================
   FINITIONS PREMIUM
========================= */
.prestige-box{
  margin-top:34px;
  padding:34px;
  border-radius:26px;
  position:relative;
  overflow:hidden;

  background:
    radial-gradient(circle at top right, rgba(255,255,255,.18), transparent 28%),
    radial-gradient(circle at bottom left, rgba(202,160,106,.22), transparent 30%),
    linear-gradient(135deg, #163a59 0%, #24557d 48%, #2f6f9f 100%);

  color:#fff;
  border:1px solid rgba(255,255,255,.12);
  box-shadow:0 22px 44px rgba(20,46,74,.18);
}

.prestige-box::before{
  content:"";
  position:absolute;
  top:-40px;
  right:-40px;
  width:180px;
  height:180px;
  border-radius:50%;
  background:radial-gradient(circle, rgba(255,255,255,.10), transparent 70%);
  pointer-events:none;
}

.prestige-box::after{
  content:"";
  position:absolute;
  inset:auto auto -70px -50px;
  width:220px;
  height:220px;
  border-radius:50%;
  background:radial-gradient(circle, rgba(202,160,106,.18), transparent 70%);
  pointer-events:none;
}

.prestige-box h3,
.prestige-box h4{
  color:#fff;
  position:relative;
  z-index:1;
}

.prestige-box h3{
  font-size:clamp(1.45rem, 2vw, 2rem);
  margin-bottom:12px;
}

.prestige-box > p{
  max-width:860px;
  color:rgba(255,255,255,.90);
  position:relative;
  z-index:1;
}

.prestige-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:26px;
  margin-top:24px;
  position:relative;
  z-index:1;
}

.prestige-grid > div{
  padding:22px 22px 18px;
  border-radius:18px;
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.10);
  backdrop-filter:blur(3px);
}

.prestige-box h4{
  margin-bottom:10px;
  font-size:1.02rem;
}

.prestige-box .list{
  padding-left:1.15rem;
}

.prestige-box .list li{
  margin-bottom:8px;
  color:rgba(255,255,255,.94);
}

.prestige-box .list li::marker{
  color:#caa06a;
}

.prestige-highlight{
  margin-top:24px;
  padding:16px 18px;
  border-radius:16px;
  background:rgba(255,255,255,.10);
  border-left:4px solid #caa06a;
  color:#fff;
  font-weight:600;
  position:relative;
  z-index:1;
}

@media (max-width: 820px){
  .prestige-box{
    padding:24px;
    border-radius:22px;
  }

  .prestige-grid{
    grid-template-columns:1fr;
  }

  .prestige-grid > div{
    padding:18px;
  }
}