/* ===== Advinexa — Static CSS ===== */
:root{
  --bg:#0b0f1e;
  --fg:#f5f7fb;
  --card:#141a2e;
  --muted:#1c2340;
  --muted-fg:#9aa3bf;
  --border:rgba(255,255,255,.10);
  --primary:#5b6cff;
  --accent:#a15bff;
  --whatsapp:#25d366;
  --brand-navy:#0b0f1e;
  --gradient-brand:linear-gradient(135deg,#4f7cff,#a15bff);
  --gradient-hero:radial-gradient(ellipse at top,rgba(91,108,255,.30),transparent 60%);
  --shadow-glow:0 20px 60px -20px rgba(91,108,255,.55);
  --shadow-card:0 8px 30px -12px rgba(0,0,0,.6);
  --radius:14px;
  --radius-lg:20px;
  --radius-xl:28px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg);color:var(--fg);
  font-family:"Inter",system-ui,-apple-system,sans-serif;
  -webkit-font-smoothing:antialiased;line-height:1.55;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
h1,h2,h3,h4{font-family:"Space Grotesk","Inter",system-ui,sans-serif;letter-spacing:-.02em;line-height:1.15;font-weight:700}
h1{font-size:clamp(2.4rem,6vw,4.5rem)}
h2{font-size:clamp(1.8rem,3.6vw,2.6rem)}
h3{font-size:1.15rem}
h4{font-size:1rem}
p{color:inherit}
.muted{color:var(--muted-fg)}
.center{text-align:center}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.section{padding:80px 20px}
.band{background:rgba(255,255,255,.02);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.eyebrow{font-size:.85rem;font-weight:600;margin-bottom:.5rem}
.section-sub{margin-top:1rem;max-width:640px}
.mt-lg{margin-top:3rem}

.gradient-text{
  background:var(--gradient-brand);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}

/* ===== Nav ===== */
.nav{position:sticky;top:0;z-index:40;backdrop-filter:blur(14px);background:rgba(11,15,30,.72);border-bottom:1px solid var(--border)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-family:"Space Grotesk",sans-serif;font-weight:700;font-size:1.1rem}
.brand img{width:36px;height:36px;border-radius:10px;object-fit:cover}
.nav-link{color:var(--muted-fg);font-size:.9rem;margin:0 12px;transition:color .2s}
.nav-link:hover{color:var(--fg)}

/* ===== Buttons ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.9rem 1.6rem;border-radius:999px;font-weight:600;font-size:.95rem;border:0;cursor:pointer;transition:transform .2s,box-shadow .2s,background .2s,border-color .2s}
.btn-sm{padding:.55rem 1.1rem;font-size:.85rem}
.btn-primary{background:var(--gradient-brand);color:#fff;box-shadow:var(--shadow-glow)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 25px 70px -15px rgba(91,108,255,.7)}
.btn-ghost{background:transparent;color:var(--fg);border:1px solid var(--border)}
.btn-ghost:hover{background:var(--muted);border-color:var(--primary)}
.btn-white{background:#fff;color:var(--brand-navy)}
.btn-white:hover{opacity:.9}
.btn-outline{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.4)}
.btn-outline:hover{background:rgba(255,255,255,.1)}
.link-primary{color:var(--primary);font-weight:600;font-size:.9rem}
.link-primary:hover{text-decoration:underline}

/* ===== Hero ===== */
.hero{position:relative;overflow:hidden}
.hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.3}
.hero-overlay{position:absolute;inset:0;background:var(--gradient-hero)}
.hero-inner{position:relative;text-align:center;padding:120px 20px;animation:fadeInUp .8s cubic-bezier(.22,1,.36,1) both}
.chip{display:inline-flex;align-items:center;gap:.5rem;border:1px solid var(--border);background:rgba(20,26,46,.6);border-radius:999px;padding:.35rem .8rem;font-size:.78rem;color:var(--muted-fg)}
.chip-dot{width:6px;height:6px;border-radius:50%;background:var(--whatsapp)}
.hero h1{margin:1.5rem 0}
.hero .lead{max-width:640px;margin:1.5rem auto 0;color:var(--muted-fg);font-size:1.05rem}
.hero-cta{margin-top:2.2rem;display:flex;justify-content:center;flex-wrap:wrap;gap:12px}

/* ===== Cards / Grids ===== */
.grid{display:grid;gap:20px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:1fr;margin-top:2.5rem}
@media (min-width:700px){.grid-3{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.grid-3{grid-template-columns:repeat(3,1fr)}}
.grid.small{gap:16px}

.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow-card);transition:transform .2s,border-color .2s}
.card:hover{transform:translateY(-4px);border-color:rgba(91,108,255,.6)}
.card h3{margin-top:1.1rem}
.card p{color:var(--muted-fg);font-size:.9rem;margin-top:.5rem}
.card.sm{padding:20px}
.card.sm h4{margin-top:.7rem}
.card.sm p{margin-top:.25rem;font-size:.85rem}
.icon-badge{width:44px;height:44px;border-radius:12px;background:var(--gradient-brand);display:grid;place-items:center;color:#fff;font-size:20px}
.feat-ic{font-size:22px;color:var(--primary)}

/* ===== Portfolio ===== */
.row-between{display:flex;flex-wrap:wrap;gap:16px;align-items:end;justify-content:space-between}
.case{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;transition:transform .2s,border-color .2s}
.case:hover{transform:translateY(-4px);border-color:rgba(91,108,255,.6)}
.case-cover{height:160px;background:var(--gradient-brand);position:relative}
.case-cover::after{content:"";position:absolute;inset:0;background:radial-gradient(circle at 30% 30%,rgba(255,255,255,.35),transparent 40%)}
.case-tag{position:absolute;top:16px;left:16px;font-size:.72rem;font-weight:700;color:rgba(255,255,255,.9);text-transform:uppercase;letter-spacing:.08em;z-index:1}
.case-body{padding:22px}
.case-body p{color:var(--muted-fg);font-size:.9rem;margin-top:.5rem}
.stat{margin-top:1rem;font-weight:600;font-size:.9rem}

/* ===== Split (Tech / About) ===== */
.split{display:grid;grid-template-columns:1fr;gap:48px;align-items:center}
@media(min-width:900px){.split{grid-template-columns:1fr 1fr;gap:64px}}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:1.5rem}
.tag{border:1px solid var(--border);background:var(--card);border-radius:999px;padding:.35rem .85rem;font-size:.85rem}
.checklist{margin-top:1.75rem;display:grid;gap:.7rem}
.checklist li{display:flex;gap:.6rem;font-size:.9rem}
.checklist li::before{content:"✓";color:var(--primary);font-weight:700}
.stat-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:24px;text-align:center}
.stat-num{font-size:2.2rem;font-weight:700;font-family:"Space Grotesk",sans-serif}

/* ===== Logos / Testimonials ===== */
.logos{display:flex;flex-wrap:wrap;justify-content:center;gap:14px 40px;margin-top:1.5rem;opacity:.7;font-family:"Space Grotesk",sans-serif;font-weight:600;font-size:1.05rem}
.card blockquote{font-size:.9rem;line-height:1.6}
.card figcaption{margin-top:1rem;font-size:.85rem}
.card figcaption span{display:block;color:var(--muted-fg);font-size:.75rem;margin-top:.15rem}

/* ===== Contact ===== */
.contact-card{position:relative;overflow:hidden;text-align:center;border-radius:var(--radius-xl);padding:56px 24px;background:var(--gradient-brand);border:1px solid var(--border)}
.contact-card::after{content:"";position:absolute;inset:0;background:radial-gradient(circle at 20% 20%,rgba(255,255,255,.25),transparent 40%),radial-gradient(circle at 80% 80%,rgba(255,255,255,.25),transparent 40%);pointer-events:none}
.contact-card h2{color:#fff;font-size:clamp(2rem,4vw,3rem)}
.contact-card p{color:rgba(255,255,255,.85);max-width:560px;margin:1rem auto 0}
.contact-cta{margin-top:2rem;display:flex;justify-content:center;flex-wrap:wrap;gap:12px;position:relative;z-index:1}

/* ===== Footer ===== */
.footer{border-top:1px solid var(--border);margin-top:40px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;padding:48px 20px}
@media(min-width:768px){.footer-grid{grid-template-columns:2fr 1fr 1fr}}
.footer-brand p{margin-top:.75rem;max-width:340px;font-size:.9rem}
.footer h4{font-size:.9rem;margin-bottom:.75rem}
.footer ul li{color:var(--muted-fg);font-size:.88rem;padding:.25rem 0}
.copy{border-top:1px solid var(--border);text-align:center;padding:18px;font-size:.78rem;color:var(--muted-fg)}

/* ===== WhatsApp Widget ===== */
.wa-widget{position:fixed;right:20px;bottom:20px;z-index:50;display:flex;flex-direction:column;align-items:flex-end;gap:12px}
.wa-fab{width:56px;height:56px;border-radius:50%;background:var(--whatsapp);color:#fff;border:0;font-size:24px;cursor:pointer;box-shadow:0 10px 30px -5px rgba(37,211,102,.6);transition:transform .2s;animation:pulse 2.4s ease-in-out infinite}
.wa-fab:hover{transform:scale(1.06)}
.wa-fab:active{transform:scale(.95)}
.wa-chat{width:min(360px,calc(100vw - 40px));background:var(--card);color:var(--fg);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;box-shadow:0 25px 60px -15px rgba(0,0,0,.7);transform-origin:bottom right;animation:slideUp .35s cubic-bezier(.22,1,.36,1)}
.wa-chat[hidden]{display:none}
.wa-head{display:flex;align-items:center;justify-content:space-between;padding:12px 14px;background:var(--whatsapp);color:#fff}
.wa-head-l{display:flex;align-items:center;gap:10px;min-width:0}
.wa-avatar{width:36px;height:36px;border-radius:50%;background:rgba(255,255,255,.2);display:grid;place-items:center;font-size:16px}
.wa-title{font-weight:600;font-size:.9rem}
.wa-sub{font-size:.72rem;opacity:.9}
.wa-x{background:transparent;border:0;color:#fff;font-size:16px;cursor:pointer;padding:6px;border-radius:50%}
.wa-x:hover{background:rgba(255,255,255,.2)}
.wa-body{padding:16px}
.wa-bubble{background:var(--muted);border-radius:12px 12px 12px 0;padding:10px 12px;font-size:.88rem}
.wa-quick{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.wa-quick button{background:transparent;border:1px solid var(--border);color:var(--fg);border-radius:999px;padding:6px 12px;font-size:.78rem;font-weight:500;cursor:pointer;transition:border-color .2s,background .2s}
.wa-quick button:hover{border-color:var(--primary);background:var(--muted)}
.wa-form{display:flex;align-items:center;gap:8px;border-top:1px solid var(--border);padding:8px}
.wa-form input{flex:1;background:transparent;border:0;outline:0;padding:8px 12px;color:var(--fg);font-size:.9rem;font-family:inherit}
.wa-form input::placeholder{color:var(--muted-fg)}
.wa-form button[type="submit"]{width:36px;height:36px;border:0;border-radius:50%;background:var(--whatsapp);color:#fff;cursor:pointer;font-size:14px}
.wa-form button[type="submit"]:hover{opacity:.9}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}

/* ===== Animations ===== */
@keyframes fadeInUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:none}}
@keyframes slideUp{from{opacity:0;transform:translateY(20px) scale(.96)}to{opacity:1;transform:none}}
@keyframes pulse{0%,100%{box-shadow:0 10px 30px -5px rgba(37,211,102,.5)}50%{box-shadow:0 10px 40px -5px rgba(37,211,102,.85)}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}}

/* ===== Mobile tweaks ===== */
@media(max-width:640px){
  .nav-link{display:none}
  .nav-link.btn{display:inline-flex}
  .section{padding:60px 20px}
  .hero-inner{padding:80px 20px}
  .grid-2{grid-template-columns:1fr}
}