/* DIGITERA Engineering Services — feuille de style du site (charte graphique 2026) */
:root{
  --navy:#002060; --navy2:#0A3A8F; --navy3:#001545; --blue:#0070BF; --cyan:#4D9BD2;
  --steel:#8C9BB1; --slate:#333333; --cloud:#E6EBF2; --mist:#F3F6FA; --white:#FFFFFF;
  --sig:linear-gradient(90deg,#002060 0%,#0070BF 60%,#B3BFCF 100%);
  --hero:linear-gradient(150deg,var(--navy2) 0%,var(--navy) 60%,var(--navy3) 100%);
  --cta:linear-gradient(90deg,var(--blue),var(--cyan));
  --grid-dark:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='69.28' height='40'%3E%3Cpath d='M0 0L69.28 40M0 40L69.28 0M0 0V40' stroke='%23FFFFFF' stroke-opacity='.06' stroke-width='1' fill='none'/%3E%3C/svg%3E");
  --grid-light:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='69.28' height='40'%3E%3Cpath d='M0 0L69.28 40M0 40L69.28 0M0 0V40' stroke='%238C9BB1' stroke-opacity='.18' stroke-width='1' fill='none'/%3E%3C/svg%3E");
  --radius:16px; --wrap:1180px;
  --shadow:0 30px 60px -24px rgba(10,31,68,.28),0 8px 20px -10px rgba(10,31,68,.18);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{font-family:Inter,Arial,sans-serif;color:var(--slate);font-size:16px;line-height:1.6;background:var(--white);-webkit-font-smoothing:antialiased;overflow-x:hidden}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
b,strong{font-weight:600;color:var(--navy)}
h1,h2,h3,.mont{font-family:Montserrat,Arial,sans-serif}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}
.skip{position:absolute;left:-999px;top:8px;background:var(--white);color:var(--navy);padding:8px 14px;border-radius:8px;z-index:100}
.skip:focus{left:12px}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:4px}

/* éléments de la charte */
.kicker{font-family:Montserrat;font-weight:700;font-size:12px;letter-spacing:.22em;text-transform:uppercase;color:var(--blue)}
.dark .kicker{color:var(--cyan)}
.sigline{height:4px;width:90px;border-radius:2px;background:var(--sig);margin:22px 0 26px}
.dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--cyan);vertical-align:middle;margin:0 10px}
.btn{display:inline-flex;align-items:center;gap:10px;font-weight:600;font-size:15px;padding:13px 26px;border-radius:999px;transition:transform .2s,box-shadow .2s,background .2s;cursor:pointer;border:0;font-family:inherit}
.btn-cta{background:var(--cta);color:var(--white);box-shadow:0 10px 24px -10px rgba(0,112,191,.8)}
.btn-cta:hover{transform:translateY(-2px);box-shadow:0 14px 28px -10px rgba(0,112,191,.9)}
.btn-ghost{color:var(--white);border:1.5px solid rgba(255,255,255,.35)}
.btn-ghost:hover{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.6)}
.btn svg{width:16px;height:16px}

/* en-tête */
.site-header{position:fixed;inset:0 0 auto 0;z-index:50;transition:background .3s,box-shadow .3s}
.site-header.scrolled{background:rgba(0,32,96,.94);backdrop-filter:blur(10px);box-shadow:0 8px 30px -12px rgba(0,0,0,.4)}
.nav{display:flex;align-items:center;justify-content:space-between;height:84px}
.nav .logo img{height:46px;width:auto}
.menu{display:flex;align-items:center;gap:34px;list-style:none;font-size:15px;font-weight:500;color:rgba(255,255,255,.82)}
.menu a:not(.btn){position:relative;padding:6px 0}
.menu a:not(.btn)::after{content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;border-radius:1px;background:var(--cyan);transition:right .25s}
.menu a:not(.btn):hover,.menu a.active{color:var(--white)}
.menu a:not(.btn):hover::after,.menu a.active::after{right:0}
.menu .btn{background:var(--blue);color:var(--white);padding:10px 22px}
.menu .btn:hover{background:#0A80D4}
.burger{display:none;width:44px;height:44px;border-radius:12px;background:rgba(255,255,255,.08);border:0;cursor:pointer;position:relative}
.burger span,.burger span::before,.burger span::after{position:absolute;left:12px;width:20px;height:2px;border-radius:1px;background:var(--white);transition:transform .25s,opacity .25s;content:""}
.burger span{top:21px}.burger span::before{top:-6px;left:0}.burger span::after{top:6px;left:0}
.nav-open .burger span{background:transparent}
.nav-open .burger span::before{transform:translateY(6px) rotate(45deg)}
.nav-open .burger span::after{transform:translateY(-6px) rotate(-45deg)}

/* hero */
.hero{position:relative;background:var(--hero);color:rgba(255,255,255,.82);overflow:hidden;padding:170px 0 150px}
.hero::before{content:"";position:absolute;inset:0;background-image:var(--grid-dark)}
.hero .wrap{position:relative;display:grid;grid-template-columns:1.15fr .85fr;align-items:center;gap:40px}
.hero h1{font-weight:800;color:var(--white);font-size:clamp(38px,5.4vw,66px);line-height:1.05;letter-spacing:-.015em;margin:18px 0 0}
.hero h1 span{color:var(--cyan)}
.hero .lead{font-size:18px;line-height:1.7;max-width:560px}
.hero .actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-art{position:relative;justify-self:center;width:min(400px,100%)}
.hero-art img{width:100%;height:auto;filter:drop-shadow(0 40px 60px rgba(0,0,0,.35));animation:float 7s ease-in-out infinite}
.hero-art::after{content:"";position:absolute;left:10%;right:10%;bottom:-40px;height:40px;border-radius:50%;background:radial-gradient(rgba(0,0,0,.35),transparent 70%)}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-14px)}}

/* cartes du template sous le hero */
.pillars{position:relative;z-index:2;margin-top:-80px}
.pillars .grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.pillar{background:var(--white);border-radius:var(--radius);padding:30px 30px 28px;box-shadow:var(--shadow);transition:transform .25s}
.pillar:hover{transform:translateY(-4px)}
.pillar .bar{width:36px;height:5px;border-radius:3px;background:var(--cyan);margin-bottom:18px}
.pillar h3{font-weight:700;color:var(--navy);font-size:19px;margin-bottom:6px}
.pillar p{font-size:15px;color:var(--steel)}

/* sections */
section.block{padding:120px 0}
.head{max-width:720px;margin-bottom:56px}
.head h2,.title{font-weight:800;color:var(--navy);font-size:clamp(30px,3.6vw,42px);line-height:1.12;letter-spacing:-.01em;margin-top:12px}
.head h2 span{color:var(--blue)}
.head p{font-size:17px}
.dark .head h2,.dark .title{color:var(--white)}
.dark .head h2 span{color:var(--cyan)}
.alt{background:var(--mist)}
.alt.grid-bg{background:var(--mist) var(--grid-light)}

/* expertises */
.exp-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.exp{background:var(--white);border:1.5px solid var(--cloud);border-radius:var(--radius);padding:28px 24px 26px;transition:border-color .25s,transform .25s,box-shadow .25s;display:flex;flex-direction:column}
.exp:hover{border-color:transparent;transform:translateY(-4px);box-shadow:var(--shadow)}
.exp .ico{width:52px;height:52px;border-radius:14px;background:var(--cloud);display:flex;align-items:center;justify-content:center;margin-bottom:20px;transition:background .25s}
.exp .ico svg{width:30px;height:30px;fill:none;stroke:var(--blue);stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:stroke .25s}
.exp:hover .ico{background:var(--blue)}
.exp:hover .ico svg{stroke:var(--white)}
.exp .num{font-family:Montserrat;font-weight:800;font-size:13px;color:var(--steel);letter-spacing:.08em;margin-bottom:4px}
.exp h3{font-weight:700;color:var(--navy);font-size:18px;line-height:1.3;margin-bottom:10px}
.exp p{font-size:14.5px;margin-bottom:14px}
.exp ul{list-style:none;font-size:14px;margin-top:auto;border-top:1px solid var(--cloud);padding-top:14px}
.exp li{position:relative;padding-left:16px;margin-bottom:6px;line-height:1.5}
.exp li::before{content:"";position:absolute;left:0;top:8px;width:6px;height:6px;border-radius:50%;background:var(--cyan)}

/* secteurs */
.dark{background:var(--hero);color:rgba(255,255,255,.8);position:relative;overflow:hidden}
.dark::before{content:"";position:absolute;inset:0;background-image:var(--grid-dark)}
.dark .wrap{position:relative}
.dark b{color:var(--white)}
.sectors{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:start}
.chips{display:flex;flex-wrap:wrap;gap:12px}
.chip{display:inline-flex;align-items:center;gap:10px;padding:12px 18px;border-radius:999px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);color:var(--white);font-weight:500;font-size:15px;transition:background .2s,border-color .2s}
.chip:hover{background:rgba(77,155,210,.18);border-color:var(--cyan)}
.chip::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--cyan)}
.solutions{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:8px}
.sol{border-radius:14px;padding:22px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12)}
.sol.hl{background:var(--blue);border-color:var(--blue)}
.sol h3{color:var(--white);font-size:16px;font-weight:700;margin-bottom:6px}
.sol p{font-size:14px;color:rgba(255,255,255,.75)}
.sol.hl p{color:rgba(255,255,255,.88)}
.sub-label{font-family:Montserrat;font-weight:700;font-size:13px;color:var(--white);margin:0 0 16px;letter-spacing:.02em}

/* méthode */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:s;position:relative}
.steps::before{content:"";position:absolute;left:24px;right:24px;top:27px;height:3px;border-radius:2px;background:var(--sig);opacity:.5}
.step{position:relative}
.step .n{width:56px;height:56px;border-radius:50%;background:var(--white);border:3px solid var(--blue);display:flex;align-items:center;justify-content:center;font-family:Montserrat;font-weight:800;color:var(--blue);font-size:18px;margin-bottom:22px;position:relative}
.step h3{font-weight:700;color:var(--navy);font-size:19px;margin-bottom:8px}
.step p{font-size:15px}

/* à propos */
.about{display:grid;grid-template-columns:1fr 1.05fr;gap:70px;align-items:start}
.about .lead{font-size:17px;margin-bottom:16px}
.values{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.value{border-radius:var(--radius);padding:26px;min-height:190px}
.value .bar{width:36px;height:5px;border-radius:3px;margin-bottom:18px}
.value h3{font-weight:700;font-size:19px;margin-bottom:8px}
.value p{font-size:14.5px;line-height:1.55}
.v1{background:var(--navy);color:rgba(255,255,255,.78)}.v1 h3{color:var(--white)}.v1 .bar{background:var(--cyan)}
.v2{background:var(--blue);color:rgba(255,255,255,.88)}.v2 h3{color:var(--white)}.v2 .bar{background:var(--white)}
.v3{background:var(--cloud)}.v3 h3{color:var(--navy)}.v3 .bar{background:var(--blue)}
.v4{border:1.5px solid var(--cloud)}.v4 h3{color:var(--navy)}.v4 .bar{background:var(--steel)}
.facts{margin-top:34px;border:1.5px solid var(--cloud);border-radius:var(--radius);overflow:hidden}
.facts div{display:grid;grid-template-columns:150px 1fr;gap:16px;padding:14px 20px;border-bottom:1px solid var(--cloud);font-size:14.5px}
.facts div:last-child{border-bottom:0}
.facts dt{font-family:Montserrat;font-weight:700;color:var(--navy);font-size:13.5px}
.team{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:18px}
.person{display:flex;align-items:center;gap:16px;padding:18px 20px;border-radius:var(--radius);background:var(--mist)}
.avatar{flex:none;width:52px;height:52px;border-radius:50%;background:var(--hero);color:var(--white);display:flex;align-items:center;justify-content:center;font-family:Montserrat;font-weight:800;font-size:17px}
.person .name{font-family:Montserrat;font-weight:700;color:var(--navy);font-size:15.5px;line-height:1.3}
.person .role{font-size:13.5px;color:var(--blue);font-weight:600}

/* contact */
.contact{display:grid;grid-template-columns:.9fr 1.1fr;gap:60px;align-items:start}
.coord{list-style:none;margin-top:30px;display:grid;gap:14px}
.coord li{display:flex;gap:16px;align-items:flex-start;padding:18px 20px;border-radius:14px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12)}
.coord svg{flex:none;width:24px;height:24px;fill:none;stroke:var(--cyan);stroke-width:2;stroke-linecap:round;stroke-linejoin:round;margin-top:2px}
.coord .lbl{font-family:Montserrat;font-weight:700;color:var(--white);font-size:14px}
.coord a:hover{color:var(--white);text-decoration:underline}
.form{background:var(--white);border-radius:20px;padding:36px;box-shadow:0 40px 80px -30px rgba(0,0,0,.55);color:var(--slate)}
.form h3{font-weight:800;color:var(--navy);font-size:22px;margin-bottom:6px}
.form .cap{font-size:13.5px;color:var(--steel);margin-bottom:24px}
.row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{margin-bottom:16px}
.field label{display:block;font-family:Montserrat;font-weight:600;font-size:13px;color:var(--navy);margin-bottom:6px}
.field input,.field select,.field textarea{width:100%;font:inherit;font-size:15px;color:var(--slate);padding:12px 14px;border:1.5px solid var(--cloud);border-radius:10px;background:var(--mist);transition:border-color .2s,background .2s}
.field textarea{min-height:130px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--blue);background:var(--white)}
.form .btn{width:100%;justify-content:center;margin-top:4px}

/* pied de page */
.footer{background:var(--navy3);color:rgba(255,255,255,.6);font-size:14px;padding:70px 0 0}
.footer .top{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;padding-bottom:50px}
.footer .logo img{height:50px;width:auto;margin-bottom:20px}
.footer .slogan{font-family:Montserrat;font-weight:800;color:var(--white);font-size:18px}
.footer .slogan span{color:var(--cyan)}
.footer h4{font-family:Montserrat;font-weight:700;color:var(--white);font-size:14px;margin-bottom:14px}
.footer ul{list-style:none;display:grid;gap:8px}
.footer a:hover{color:var(--white)}
.footer .sig{height:4px;background:var(--sig)}
.footer .legal{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;padding:22px 0;font-size:12.5px;color:rgba(255,255,255,.45)}

/* apparition au défilement */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .hero-art img{animation:none}
}

/* responsive */
@media (max-width:1080px){
  .exp-grid{grid-template-columns:repeat(2,1fr)}
  .about,.sectors,.contact{grid-template-columns:1fr;gap:50px}
  .footer .top{grid-template-columns:1fr 1fr}
  .footer .top>div:first-child{grid-column:1/-1}
}
@media (max-width:860px){
  .burger{display:block}
  .menu{position:fixed;inset:84px 0 auto 0;flex-direction:column;align-items:stretch;gap:0;padding:12px 24px 28px;background:var(--navy);box-shadow:0 20px 40px -20px rgba(0,0,0,.6);transform:translateY(-12px);opacity:0;visibility:hidden;transition:opacity .25s,transform .25s,visibility .25s}
  .menu li{border-bottom:1px solid rgba(255,255,255,.08)}
  .menu li:last-child{border:0;padding-top:16px}
  .menu a:not(.btn){display:block;padding:16px 0}
  .menu a:not(.btn)::after{display:none}
  .menu .btn{width:100%;justify-content:center}
  .nav-open .menu{opacity:1;transform:none;visibility:visible}
  .nav-open .site-header{background:var(--navy)}
  .hero{padding:130px 0 130px}
  .hero .wrap{grid-template-columns:1fr}
  .hero-art{width:min(150px,40%);order:-1;justify-self:start}
  .hero-art::after{display:none}
  .pillars .grid,.steps{grid-template-columns:1fr}
  .steps::before{left:27px;right:auto;top:28px;bottom:28px;width:3px;height:auto;background:linear-gradient(180deg,#002060,#0070BF 60%,#B3BFCF)}
  .step{display:grid;grid-template-columns:56px 1fr;column-gap:20px}
  .step .n{grid-row:span 2;margin:0}
  section.block{padding:90px 0}
}
@media (max-width:600px){
  .wrap{padding:0 16px}
  .nav .logo img{height:38px}
  .exp-grid,.values,.team,.solutions,.row{grid-template-columns:1fr}
  .value{min-height:0}
  .facts div{grid-template-columns:1fr;gap:2px}
  .form{padding:26px 20px}
  .footer .top{grid-template-columns:1fr}
  .hero .actions .btn{flex:1 1 100%;justify-content:center}
}