/* =========================================================
   WEBCONCEPT.TN — Design system premium
   ========================================================= */
:root{
  --bg-dark:#071426;
  --bg-dark-2:#0b1c33;
  --blue:#176BFF;
  --cyan:#00D4FF;
  --white:#FFFFFF;
  --gray:#F4F7FB;
  --ink:#0b1c33;
  --ink-soft:#42536b;
  --border:rgba(11,28,51,.09);
  --border-dark:rgba(255,255,255,.10);
  --radius:16px;
  --radius-lg:24px;
  --shadow:0 20px 60px rgba(7,20,38,.10);
  --shadow-blue:0 20px 60px rgba(23,107,255,.25);
  --font-body:'Inter',system-ui,sans-serif;
  --font-title:'Space Grotesk','Inter',sans-serif;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font-body);color:var(--ink);background:var(--white);line-height:1.65;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-family:var(--font-title);line-height:1.15;letter-spacing:-.02em;margin:0 0 .6em}
h1{font-size:clamp(2.4rem,5.4vw,4.4rem);font-weight:700}
h2{font-size:clamp(1.9rem,3.6vw,3rem);font-weight:700}
h3{font-size:1.3rem;font-weight:600}
p{margin:0 0 1em;color:var(--ink-soft)}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 1.25rem}
.center{text-align:center}
.mt-4{margin-top:1rem}.mt-8{margin-top:2rem}
.grad{background:linear-gradient(90deg,var(--cyan),var(--blue));-webkit-background-clip:text;background-clip:text;color:transparent}
.grad-dark{background:linear-gradient(90deg,var(--blue),var(--cyan));-webkit-background-clip:text;background-clip:text;color:transparent}

/* ===== Boutons ===== */
.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.85rem 1.4rem;border-radius:999px;font-weight:600;font-size:.95rem;border:1px solid transparent;cursor:pointer;transition:transform .25s ease,box-shadow .25s ease,background .25s ease,color .25s ease;font-family:var(--font-body)}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:linear-gradient(135deg,var(--blue),var(--cyan));color:var(--white);box-shadow:var(--shadow-blue)}
.btn-primary:hover{box-shadow:0 24px 60px rgba(23,107,255,.4)}
.btn-ghost{background:rgba(255,255,255,.06);color:var(--white);border-color:rgba(255,255,255,.18);backdrop-filter:blur(8px)}
.btn-ghost:hover{background:rgba(255,255,255,.14)}
.btn-outline-light{background:transparent;color:var(--white);border:1px solid rgba(255,255,255,.35)}
.btn-outline-light:hover{background:var(--white);color:var(--ink)}
.btn-outline-dark{background:transparent;color:var(--ink);border:1px solid var(--border)}
.btn-outline-dark:hover{background:var(--ink);color:var(--white)}
.btn-whatsapp{background:#25D366;color:#fff}
.btn-lg{padding:1rem 1.75rem;font-size:1rem}
.btn-sm{padding:.6rem 1.1rem;font-size:.85rem}

/* ===== Navbar ===== */
.site-navbar{position:fixed;top:0;left:0;right:0;z-index:100;padding:1rem 0;background:rgba(7,20,38,.6);backdrop-filter:blur(16px);border-bottom:1px solid transparent;transition:all .3s}
.site-navbar.scrolled{padding:.6rem 0;background:rgba(7,20,38,.9);border-bottom-color:var(--border-dark)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:1.5rem}
.brand{display:inline-flex;align-items:center;gap:.6rem;color:var(--white);font-family:var(--font-title);font-weight:700;font-size:1.1rem}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:10px;background:linear-gradient(135deg,var(--blue),var(--cyan));color:var(--white);font-weight:800;box-shadow:var(--shadow-blue)}
.brand-light{color:var(--white)}
.nav-main ul{display:flex;align-items:center;gap:1.4rem;list-style:none;margin:0;padding:0}
.nav-main a{color:rgba(255,255,255,.78);font-weight:500;font-size:.95rem;transition:color .2s}
.nav-main a:hover,.nav-main a.active{color:var(--white)}
.has-dropdown{position:relative}
.has-dropdown .dropdown{position:absolute;top:calc(100% + 14px);left:50%;transform:translateX(-50%) translateY(8px);min-width:260px;padding:.6rem;background:var(--bg-dark-2);border:1px solid var(--border-dark);border-radius:14px;opacity:0;visibility:hidden;transition:all .25s;flex-direction:column;gap:.2rem;box-shadow:var(--shadow)}
.has-dropdown:hover .dropdown{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.dropdown a{display:flex;gap:.6rem;align-items:center;padding:.6rem .8rem;border-radius:10px;color:rgba(255,255,255,.85)}
.dropdown a:hover{background:rgba(255,255,255,.06)}
.dropdown i{color:var(--cyan);width:18px;text-align:center}
.nav-toggle{display:none;background:none;border:none;cursor:pointer;padding:.5rem;flex-direction:column;gap:5px}
.nav-toggle span{width:24px;height:2px;background:var(--white);border-radius:2px}
.mobile-menu{display:none;position:fixed;inset:64px 0 0;background:var(--bg-dark);z-index:99;padding:2rem;overflow-y:auto}
.mobile-menu.open{display:block}
.mobile-menu ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:.5rem}
.mobile-menu a{color:var(--white);padding:.75rem 0;display:block;font-size:1.05rem}
.mobile-menu summary{cursor:pointer;color:var(--white);font-weight:600;padding:.75rem 0}
.mobile-menu details ul{padding-left:1rem}

/* ===== Hero ===== */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;padding:9rem 0 6rem;background:var(--bg-dark);color:var(--white);overflow:hidden}
.hero-bg{position:absolute;inset:0;pointer-events:none}
.orb{position:absolute;border-radius:50%;filter:blur(80px);opacity:.55}
.orb-1{width:520px;height:520px;background:var(--blue);top:-120px;left:-80px;animation:float 18s ease-in-out infinite}
.orb-2{width:420px;height:420px;background:var(--cyan);bottom:-100px;right:-60px;animation:float 22s ease-in-out infinite reverse}
.grid-lines{position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:60px 60px;mask-image:radial-gradient(circle at 50% 40%,#000 40%,transparent 80%)}
@keyframes float{0%,100%{transform:translate(0,0)}50%{transform:translate(40px,-40px)}}
.hero-inner{position:relative;z-index:2;text-align:center;max-width:960px;margin:0 auto}
.hero h1{color:var(--white);margin-bottom:1rem}
.hero .lead{color:rgba(255,255,255,.78);font-size:clamp(1rem,1.4vw,1.2rem);max-width:760px;margin:0 auto 2rem}
.badge{display:inline-flex;align-items:center;gap:.5rem;padding:.45rem .95rem;border-radius:999px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);font-size:.82rem;color:rgba(255,255,255,.9);margin-bottom:1.5rem;backdrop-filter:blur(8px)}
.badge i{color:var(--cyan)}
.hero-actions{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}
.center-actions{justify-content:center}
.scroll-indicator{position:absolute;bottom:2rem;left:50%;transform:translateX(-50%);width:22px;height:38px;border:2px solid rgba(255,255,255,.35);border-radius:14px}
.scroll-indicator span{position:absolute;top:8px;left:50%;transform:translateX(-50%);width:3px;height:8px;background:var(--cyan);border-radius:2px;animation:scroll 1.8s ease-in-out infinite}
@keyframes scroll{0%{opacity:0;transform:translate(-50%,0)}50%{opacity:1}100%{opacity:0;transform:translate(-50%,14px)}}

/* ===== Sections ===== */
.section{padding:6rem 0;position:relative}
.section-light{background:var(--gray);color:var(--ink)}
.section-dark{background:var(--bg-dark);color:var(--white)}
.section-dark p{color:rgba(255,255,255,.7)}
.section-dark h2,.section-dark h3,.section-dark h4{color:var(--white)}
.section-cta{background:linear-gradient(135deg,#071426 0%,#0b1c33 100%);color:var(--white);position:relative;overflow:hidden}
.section-cta::before{content:"";position:absolute;width:600px;height:600px;border-radius:50%;background:radial-gradient(circle,rgba(23,107,255,.35),transparent 70%);top:-200px;left:50%;transform:translateX(-50%);pointer-events:none}
.cta-inner{position:relative;text-align:center;max-width:820px;margin:0 auto}
.cta-inner h2{color:var(--white);margin-bottom:.6rem}
.cta-inner p{color:rgba(255,255,255,.78);margin-bottom:1.8rem}
.cta-inner .hero-actions{justify-content:center}

.section-head{max-width:720px;margin:0 auto 3rem;text-align:center}
.section-head.light .eyebrow{color:var(--cyan)}
.section-head.light h2,.section-head.light p{color:var(--white)}
.eyebrow{display:inline-block;font-size:.8rem;font-weight:700;text-transform:uppercase;letter-spacing:.15em;color:var(--blue);margin-bottom:.75rem}
.section-head p{color:var(--ink-soft);margin:.5rem 0 0}

/* ===== Grilles ===== */
.grid{display:grid;gap:1.5rem}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}

/* ===== Cartes services ===== */
.card{background:var(--white);border:1px solid var(--border);border-radius:var(--radius-lg);padding:2rem;transition:transform .35s ease,box-shadow .35s ease,border-color .35s ease;position:relative;display:block}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:rgba(23,107,255,.3)}
.service-icon{width:56px;height:56px;border-radius:14px;background:linear-gradient(135deg,rgba(23,107,255,.12),rgba(0,212,255,.12));color:var(--blue);display:flex;align-items:center;justify-content:center;font-size:1.4rem;margin-bottom:1.2rem}
.service-icon.lg{width:80px;height:80px;font-size:2rem;margin:0 auto 1.5rem}
.service-card h3{color:var(--ink);margin-bottom:.5rem}
.service-card p{color:var(--ink-soft);font-size:.95rem;margin-bottom:1rem}
.card-link{color:var(--blue);font-weight:600;font-size:.9rem;display:inline-flex;align-items:center;gap:.4rem;transition:gap .25s}
.service-card:hover .card-link{gap:.7rem}

/* ===== Feature cards ===== */
.feature-card{background:rgba(255,255,255,.04);border:1px solid var(--border-dark);border-radius:var(--radius);padding:1.75rem;transition:transform .3s,border-color .3s,background .3s}
.feature-card:hover{transform:translateY(-4px);border-color:rgba(0,212,255,.4);background:rgba(23,107,255,.06)}
.feature-card i{font-size:1.5rem;color:var(--cyan);margin-bottom:1rem;display:block}
.feature-card h4{color:var(--white);margin-bottom:.4rem}
.feature-card p{color:rgba(255,255,255,.65);font-size:.92rem;margin:0}

/* ===== Steps ===== */
.steps{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem;counter-reset:step}
.steps li{background:var(--white);border:1px solid var(--border);border-radius:var(--radius);padding:1.75rem;position:relative}
.steps-light li{background:rgba(255,255,255,.04);border-color:var(--border-dark)}
.step-num{font-family:var(--font-title);font-size:.9rem;font-weight:700;color:var(--blue);display:block;margin-bottom:.5rem}
.steps-light .step-num{color:var(--cyan)}
.steps h4{color:var(--ink);margin-bottom:.3rem}
.steps-light h4{color:var(--white)}
.steps p{color:var(--ink-soft);font-size:.9rem;margin:0}
.steps-light p{color:rgba(255,255,255,.65)}

/* ===== Portfolio ===== */
.portfolio-card{background:var(--white);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;transition:transform .35s,box-shadow .35s}
.portfolio-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.portfolio-thumb{height:180px;background:linear-gradient(135deg,rgba(23,107,255,.15),rgba(0,212,255,.15));display:flex;align-items:center;justify-content:center;font-size:3rem;color:var(--blue)}
.portfolio-body{padding:1.5rem}
.tag{display:inline-block;font-size:.72rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--blue);background:rgba(23,107,255,.1);padding:.3rem .7rem;border-radius:999px;margin-bottom:.8rem}
.portfolio-body h3{color:var(--ink);margin-bottom:.3rem}
.portfolio-body p{color:var(--ink-soft);font-size:.9rem;margin:0}

/* ===== Technos ===== */
.tech-grid{display:flex;flex-wrap:wrap;gap:.75rem;justify-content:center}
.tech-pill{padding:.6rem 1.15rem;background:var(--white);border:1px solid var(--border);border-radius:999px;font-weight:600;font-size:.88rem;color:var(--ink);transition:all .25s}
.tech-pill:hover{background:var(--ink);color:var(--white);border-color:var(--ink)}

/* ===== Blog ===== */
.blog-card{background:var(--white);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;transition:transform .3s,box-shadow .3s;display:flex;flex-direction:column}
.blog-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.blog-thumb{height:160px;background:linear-gradient(135deg,rgba(23,107,255,.12),rgba(0,212,255,.12));display:flex;align-items:center;justify-content:center;font-size:2.2rem;color:var(--blue)}
.blog-body{padding:1.5rem;display:flex;flex-direction:column;flex:1}
.blog-body h3{font-size:1.15rem;margin:.4rem 0 .6rem}
.blog-body h3 a{color:var(--ink)}
.blog-body p{color:var(--ink-soft);font-size:.9rem;flex:1}
.blog-meta{display:flex;justify-content:space-between;align-items:center;margin-top:1rem;font-size:.85rem;color:var(--ink-soft)}
.blog-meta a{color:var(--blue);font-weight:600}

/* ===== Page hero interne ===== */
.page-hero{background:var(--bg-dark);color:var(--white);padding:8rem 0 5rem;position:relative;overflow:hidden}
.page-hero::before{content:"";position:absolute;width:800px;height:800px;border-radius:50%;background:radial-gradient(circle,rgba(23,107,255,.3),transparent 60%);top:-300px;right:-200px}
.page-hero-inner{position:relative;text-align:center;max-width:820px;margin:0 auto}
.page-hero h1{color:var(--white)}
.page-hero .lead{color:rgba(255,255,255,.75);font-size:1.1rem;max-width:680px;margin:0 auto 1.5rem}
.page-hero .hero-actions{justify-content:center}

/* ===== Breadcrumb ===== */
.breadcrumb{padding:1rem 1.25rem 0;font-size:.85rem}
.breadcrumb ol{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:.5rem;color:var(--ink-soft)}
.breadcrumb li:not(:last-child)::after{content:"/";margin-left:.5rem;color:var(--ink-soft);opacity:.5}
.breadcrumb a{color:var(--blue)}
.breadcrumb span{color:var(--ink-soft)}

/* ===== Two columns ===== */
.two-col{display:grid;grid-template-columns:1.15fr .85fr;gap:3rem;align-items:start}
.list-card{background:var(--white);border:1px solid var(--border);border-radius:var(--radius-lg);padding:2rem;box-shadow:var(--shadow)}
.list-card h3{color:var(--ink);margin-bottom:1rem}
.check-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:.7rem}
.check-list li{display:flex;gap:.6rem;color:var(--ink);font-size:.95rem}
.check-list i{color:var(--blue);margin-top:.3rem}

/* ===== Article ===== */
.article-wrap{max-width:820px;margin:0 auto}
.article-content{margin-top:2rem;font-size:1.03rem}
.article-content h2{margin-top:2rem}
.article-content p{color:var(--ink-soft)}

/* ===== Formulaires ===== */
.form{display:flex;flex-direction:column;gap:1rem}
.form label{display:flex;flex-direction:column;gap:.35rem;font-size:.9rem;font-weight:500;color:var(--ink)}
.form input,.form select,.form textarea{width:100%;padding:.85rem 1rem;border:1px solid var(--border);border-radius:12px;font-family:inherit;font-size:.95rem;background:var(--white);color:var(--ink);transition:border-color .2s,box-shadow .2s}
.form input:focus,.form select:focus,.form textarea:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 4px rgba(23,107,255,.12)}
.form textarea{resize:vertical;min-height:120px}
.form .checkbox{flex-direction:row;align-items:flex-start;gap:.5rem;font-weight:400;font-size:.88rem}
.form .checkbox input{width:auto;margin-top:.25rem}
.form-light label{color:rgba(255,255,255,.9)}
.form-light input,.form-light select,.form-light textarea{background:rgba(255,255,255,.06);border-color:var(--border-dark);color:var(--white)}
.form-light input::placeholder,.form-light textarea::placeholder{color:rgba(255,255,255,.4)}
.form-light select option{color:var(--ink);background:var(--white)}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.alert{padding:1rem 1.2rem;border-radius:12px;margin-bottom:1.25rem;font-size:.92rem}
.alert-success{background:rgba(37,211,102,.12);border:1px solid rgba(37,211,102,.4);color:#0a7d3a}
.alert-error{background:rgba(220,53,69,.10);border:1px solid rgba(220,53,69,.35);color:#a4202f}
.alert ul{margin:.5rem 0 0 1.2rem;padding:0}

/* ===== Contact block / Map ===== */
.contact-block{list-style:none;padding:0;margin:1.5rem 0 0;display:flex;flex-direction:column;gap:.75rem}
.contact-block li{display:flex;align-items:center;gap:.65rem;color:var(--ink)}
.contact-block i{color:var(--blue);width:18px}
.map{margin-top:2rem;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.map iframe{width:100%;height:320px;border:0;display:block}

/* ===== Footer ===== */
.site-footer{background:var(--bg-dark);color:rgba(255,255,255,.75);padding:4rem 0 1.5rem}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:2.5rem}
.footer-desc{margin:1rem 0 1.25rem;font-size:.92rem;color:rgba(255,255,255,.6)}
.socials{display:flex;gap:.5rem}
.socials a{width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;border-radius:10px;background:rgba(255,255,255,.06);color:var(--white);transition:all .25s}
.socials a:hover{background:var(--blue);transform:translateY(-2px)}
.site-footer h4{color:var(--white);font-size:.95rem;text-transform:uppercase;letter-spacing:.1em;margin-bottom:1rem}
.footer-links{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:.5rem;font-size:.9rem}
.footer-links a:hover{color:var(--cyan)}
.footer-contact{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:.55rem;font-size:.9rem;margin-bottom:1rem}
.footer-contact i{color:var(--cyan);width:16px;margin-right:.35rem}
.footer-bottom{border-top:1px solid var(--border-dark);margin-top:3rem;padding-top:1.5rem;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:1rem;font-size:.82rem;color:rgba(255,255,255,.55)}
.footer-bottom ul{list-style:none;padding:0;margin:0;display:flex;gap:1.2rem}
.footer-bottom a:hover{color:var(--cyan)}

/* ===== WhatsApp FAB ===== */
.whatsapp-fab{position:fixed;bottom:22px;right:22px;width:56px;height:56px;border-radius:50%;background:#25D366;color:#fff;display:flex;align-items:center;justify-content:center;font-size:1.5rem;box-shadow:0 12px 30px rgba(37,211,102,.45);z-index:90;transition:transform .25s}
.whatsapp-fab:hover{transform:scale(1.08)}

/* ===== Responsive ===== */
@media (max-width: 1024px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .two-col{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width: 860px){
  .nav-main,.nav-cta{display:none}
  .nav-toggle{display:flex}
  .has-dropdown .dropdown{display:none}
}
@media (max-width: 640px){
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .section{padding:4rem 0}
  .hero{padding:7rem 0 4rem}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;text-align:center}
  .hero-actions{flex-direction:column;width:100%}
  .hero-actions .btn{width:100%;justify-content:center}
}

/* Accessibilité focus */
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px}
/* Alertes avec icône */
.alert{display:flex;gap:.75rem;align-items:flex-start}
.alert > i{font-size:1.15rem;margin-top:.15rem;flex-shrink:0}

/* Réseaux sociaux variante claire (page contact) */
.socials-light a{
  background:rgba(11,28,51,.06);
  color:var(--ink);
}
.socials-light a:hover{
  background:var(--blue);
  color:#fff;
}