/* ============================================================
   TFESI — Sistema de diseño compartido
   ============================================================ */
:root{
  --navy-950:#06101d;
  --navy-900:#0a1726;
  --navy-850:#0d1f33;
  --navy-800:#11273f;
  --navy-700:#173552;
  --navy-600:#1d4574;
  --blue-700:#1551a8;
  --blue-600:#1f63c4;
  --blue-500:#2a7de1;
  --blue-400:#4a9bf0;
  --blue-300:#7db8f7;
  --steel:#8fb4dd;
  --gray-50:#f6f8fc;
  --gray-100:#eef2f8;
  --gray-200:#e2e8f1;
  --gray-300:#cdd7e4;
  --ink:#0e1d2f;
  --ink-2:#26384d;
  --mute:#5d6f86;
  --mute-2:#8090a3;
  --white:#ffffff;
  --radius:16px;
  --radius-lg:24px;
  --radius-sm:10px;
  --shadow-sm:0 2px 8px rgba(13,31,51,.06);
  --shadow:0 12px 32px -8px rgba(13,31,51,.16);
  --shadow-lg:0 28px 64px -16px rgba(10,23,38,.32);
  --maxw:1200px;
  --grad-blue:linear-gradient(135deg,#2a7de1 0%,#1551a8 100%);
  --grad-navy:linear-gradient(160deg,#0d1f33 0%,#0a1726 60%,#06101d 100%);
  --font:'Manrope',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  --font-display:'Sora','Manrope',system-ui,sans-serif;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font);
  color:var(--ink);
  background:var(--white);
  line-height:1.6;
  font-size:17px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
h1,h2,h3,h4,h5{font-family:var(--font-display);line-height:1.12;font-weight:700;letter-spacing:-.02em;color:var(--ink)}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.wrap-wide{max-width:1320px;margin:0 auto;padding:0 24px}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  font-weight:700;font-size:15px;letter-spacing:.01em;
  padding:15px 28px;border-radius:12px;
  transition:transform .25s cubic-bezier(.2,.7,.3,1),box-shadow .25s,background .25s,color .25s;
  white-space:nowrap;line-height:1;
}
.btn svg{width:18px;height:18px;flex:none}
.btn-primary{background:var(--grad-blue);color:#fff;box-shadow:0 10px 24px -8px rgba(42,125,225,.55)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 36px -10px rgba(42,125,225,.65)}
.btn-wa{background:#25d366;color:#08361b;box-shadow:0 10px 24px -8px rgba(37,211,102,.5)}
.btn-wa:hover{transform:translateY(-2px);box-shadow:0 18px 36px -10px rgba(37,211,102,.6)}
.btn-ghost{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.28)}
.btn-ghost:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.5)}
.btn-outline{background:#fff;color:var(--blue-700);border:1.5px solid var(--gray-300)}
.btn-outline:hover{border-color:var(--blue-500);color:var(--blue-600);transform:translateY(-2px)}
.btn-dark{background:var(--navy-900);color:#fff}
.btn-dark:hover{background:var(--navy-800);transform:translateY(-2px)}
.btn-sm{padding:11px 18px;font-size:13.5px;border-radius:10px}
.btn-lg{padding:18px 34px;font-size:16px}

/* ---------- Eyebrow / section heads ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-size:13px;font-weight:800;letter-spacing:.16em;text-transform:uppercase;
  color:var(--blue-600);
}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--blue-500);border-radius:2px}
.eyebrow.center{justify-content:center}
.eyebrow.light{color:var(--blue-300)}
.section{padding:96px 0}
.section-head{max-width:720px;margin:0 auto 56px;text-align:center}
.section-head h2{font-size:clamp(30px,4.2vw,46px);margin:16px 0 14px}
.section-head p{color:var(--mute);font-size:18px}
.section-head.light h2{color:#fff}
.section-head.light p{color:var(--steel)}

/* ============================================================
   NAVBAR
   ============================================================ */
.nav{
  position:sticky;top:0;z-index:90;
  background:rgba(8,18,30,.86);backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(255,255,255,.07);
  transition:background .3s;
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:104px;gap:24px}
.nav-logo{display:flex;align-items:center}
.nav-logo img{height:86px;width:auto}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-links a{
  color:#d6e2f0;font-weight:600;font-size:15px;padding:10px 16px;border-radius:9px;
  transition:color .2s,background .2s;position:relative;
}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.07)}
.nav-cta{display:flex;align-items:center;gap:14px}
.nav-burger{display:none;flex-direction:column;gap:5px;padding:10px;border-radius:9px}
.nav-burger span{width:24px;height:2.5px;background:#fff;border-radius:2px;transition:.3s}
.nav-burger.open span:nth-child(1){transform:translateY(7.5px) rotate(45deg)}
.nav-burger.open span:nth-child(2){opacity:0}
.nav-burger.open span:nth-child(3){transform:translateY(-7.5px) rotate(-45deg)}
.mobile-menu{
  position:fixed;inset:92px 0 auto 0;z-index:89;
  background:var(--navy-900);border-bottom:1px solid rgba(255,255,255,.08);
  padding:18px 24px 28px;display:none;flex-direction:column;gap:6px;
  transform:translateY(-12px);opacity:0;transition:opacity .25s,transform .25s;
}
.mobile-menu.show{display:flex;opacity:1;transform:translateY(0)}
.mobile-menu a{color:#d6e2f0;font-weight:600;padding:14px 14px;border-radius:10px;font-size:16px}
.mobile-menu a:hover{background:rgba(255,255,255,.07);color:#fff}
.mobile-menu .btn{margin-top:10px}

/* ============================================================
   FOOTER
   ============================================================ */
.footer{background:var(--navy-950);color:#aebccd;padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.4fr;gap:48px;padding-bottom:56px}
.footer-logo img{height:54px;margin-bottom:20px}
.footer-about p{font-size:15px;line-height:1.7;color:#8fa1b5;max-width:330px}
.footer-social{display:flex;gap:12px;margin-top:22px}
.footer-social a{
  width:42px;height:42px;border-radius:11px;display:grid;place-items:center;
  background:rgba(255,255,255,.06);color:#cdd9e6;transition:.25s;
}
.footer-social a:hover{background:var(--blue-600);color:#fff;transform:translateY(-3px)}
.footer-social svg{width:19px;height:19px}
.footer h4{color:#fff;font-size:16px;font-family:var(--font);font-weight:800;margin-bottom:20px;letter-spacing:.01em}
.footer ul{list-style:none;display:flex;flex-direction:column;gap:13px}
.footer ul a,.footer-contact li{font-size:15px;color:#8fa1b5;transition:color .2s;display:flex;gap:11px;align-items:flex-start}
.footer ul a:hover{color:var(--blue-300)}
.footer-contact{list-style:none;display:flex;flex-direction:column;gap:16px}
.footer-contact svg{width:18px;height:18px;color:var(--blue-400);flex:none;margin-top:3px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:24px 0;display:flex;justify-content:space-between;align-items:center;gap:18px;flex-wrap:wrap}
.footer-bottom p{font-size:14px;color:#74859a}
.footer-bottom div{display:flex;gap:24px}
.footer-bottom a{font-size:14px;color:#74859a}
.footer-bottom a:hover{color:var(--blue-300)}

/* ---------- Floating WhatsApp ---------- */
.wa-float{
  position:fixed;right:24px;bottom:24px;z-index:80;
  width:60px;height:60px;border-radius:50%;background:#25d366;
  display:grid;place-items:center;box-shadow:0 12px 30px -6px rgba(37,211,102,.6);
  transition:transform .3s;animation:waPulse 2.6s infinite;
}
.wa-float:hover{transform:scale(1.08)}
.wa-float svg{width:32px;height:32px;color:#fff}
@keyframes waPulse{0%{box-shadow:0 0 0 0 rgba(37,211,102,.5)}70%{box-shadow:0 0 0 16px rgba(37,211,102,0)}100%{box-shadow:0 0 0 0 rgba(37,211,102,0)}}

/* ---------- Reveal (visible by default; only below-fold elements get hidden via .pre) ---------- */
.reveal{opacity:1;transform:none;transition:opacity .7s ease,transform .7s cubic-bezier(.2,.7,.3,1)}
.reveal.pre{opacity:0;transform:translateY(26px)}
.reveal.d1{transition-delay:.08s}.reveal.d2{transition-delay:.16s}.reveal.d3{transition-delay:.24s}.reveal.d4{transition-delay:.32s}
@media (prefers-reduced-motion:reduce){.reveal{transition:none}.reveal.pre{opacity:1;transform:none}}

/* ============================================================
   CARDS / GENERIC
   ============================================================ */
.card{background:#fff;border:1px solid var(--gray-200);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);transition:transform .35s,box-shadow .35s,border-color .35s}
.chip{display:inline-flex;align-items:center;gap:8px;padding:8px 15px;border-radius:999px;font-size:13px;font-weight:700;background:var(--gray-100);color:var(--ink-2)}
.tag-pill{display:inline-flex;align-items:center;gap:7px;font-size:11px;font-weight:800;letter-spacing:.13em;text-transform:uppercase;color:var(--blue-600)}

/* ---------- Responsive base ---------- */
@media (max-width:980px){
  .nav-links,.nav-cta .btn{display:none}
  .nav-burger{display:flex}
  .nav-inner{height:94px}
  .nav-logo img{height:76px}
  .mobile-menu{inset:94px 0 auto 0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .section{padding:72px 0}
}
@media (max-width:600px){
  body{font-size:16px}
  .nav-inner{height:86px}
  .nav-logo img{height:68px}
  .mobile-menu{inset:86px 0 auto 0}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;text-align:center}
  .section{padding:60px 0}
  .wrap,.wrap-wide{padding:0 18px}
}