:root{
  --bg:#0b0f1a; --panel:#0f1525cc; --text:#E6EAF2; --muted:#C7D2E1;
  --primary:#22d3ee;           /* celeste */
  --secondary:#ff4d6d;         /* rojo coral */
  --brand-grad:linear-gradient(120deg,var(--primary),var(--secondary));
  --ring:#2A3657; --radius:16px; --shadow:0 10px 30px rgba(0,0,0,.25);
  --gutterX:clamp(18px,6.5vw,56px);
  --navH:84px;
}
@media (max-width:920px){ :root{ --navH:72px; } }

*{box-sizing:border-box}
html,body{height:100%}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:Inter,system-ui,Segoe UI,Roboto,Arial,sans-serif;
  -webkit-font-smoothing:antialiased;line-height:1.45;overflow-x:hidden;
}
a{color:inherit;text-decoration:none}

/* Container con safe-areas */
.container{
  max-width:1100px;margin-inline:auto;
  padding-left:max(var(--gutterX),16px,env(safe-area-inset-left));
  padding-right:max(var(--gutterX),16px,env(safe-area-inset-right));
}

/* ===== Fondos (mesh celeste→rojo) ===== */
.bg-3d{position:fixed;inset:0;z-index:-3;pointer-events:none;
  background:
    radial-gradient(1200px 600px at 15% 10%, #0b2134 0%, transparent 55%),
    radial-gradient(900px 500px at 85% 25%, #1a0e21 0%, transparent 60%),
    radial-gradient(1000px 600px at 20% 85%, #082230 0%, transparent 55%),
    linear-gradient(160deg,#0a1222 0%, #0e0f1a 70%);
}
.grid-floor{position:fixed;left:-10vw;right:-10vw;bottom:-30vh;height:65vh;z-index:-2;pointer-events:none;
  background:
    repeating-linear-gradient(to right, #22d3ee25 0 2px, transparent 2px 60px),
    repeating-linear-gradient(to top,   #ff4d6d25 0 2px, transparent 2px 60px);
  transform:perspective(800px) rotateX(60deg) translateY(10vh);
  filter:drop-shadow(0 -10px 40px rgba(34,211,238,.08));
}
.filament{position:fixed;inset:-20vh -10vw;z-index:-1;pointer-events:none;opacity:.35;
  background:
    radial-gradient(70px 70px at 22% 28%, #22d3ee40 0 60%, transparent 61%),
    radial-gradient(70px 70px at 78% 62%, #ff4d6d40 0 60%, transparent 61%),
    conic-gradient(from 0deg at 40% 40%, #22d3ee12, #ff4d6d18, #22d3ee12);
  filter:blur(42px);
}

/* ===== Navbar ===== */
.navbar{position:sticky;top:0;z-index:50;backdrop-filter:saturate(160%) blur(10px);padding-top:env(safe-area-inset-top)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 0}
.brand{display:flex;align-items:center;gap:12px}
.logo{width:34px;height:34px;border-radius:12px;background:url("/assets/logo.png") center/contain no-repeat, #0f1525;border:1px solid #1a2235;box-shadow:0 6px 22px rgba(43,138,255,.18)}
.brand b{font-family:"Plus Jakarta Sans",Inter,sans-serif;letter-spacing:.2px}
.nav{display:flex;gap:18px;align-items:center}
.nav a{color:var(--muted);font-weight:600;font-size:14px;opacity:.9}
.nav a:hover{color:#fff}
.cta{padding:10px 14px;border-radius:12px;background:var(--brand-grad);color:#061611!important;font-weight:800;box-shadow:0 10px 24px rgba(34,211,238,.22)}
.scrolled{box-shadow:0 12px 30px rgba(0,0,0,.25);border-bottom:1px solid #1a2235}

/* ===== Hero & base ===== */
.hero{padding-block:92px 24px}
.crumbs{font-size:13px;color:#9fe9df}
.crumbs a{color:#9fe9df}
.pill{display:inline-flex;gap:8px;align-items:center;padding:8px 12px;border:1px solid var(--ring);border-radius:999px;color:var(--muted);background:#0f152580}
.spark{width:10px;height:10px;border-radius:50%;background:var(--brand-grad);box-shadow:0 0 0 6px rgba(34,211,238,.10)}
.title{font-family:"Plus Jakarta Sans",Inter,sans-serif;font-weight:800;line-height:1.04;font-size:clamp(32px,6vw,56px);letter-spacing:-.02em;margin:16px 0 10px}
h1.title{isolation:isolate;position:relative}
.title .grad{
  display:inline-block;background:var(--brand-grad);background-size:100% 100%;background-repeat:no-repeat;
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent;
}
.lead{max-width:840px;color:#C7D2E1;font-size:clamp(16px,2.5vw,18px);line-height:1.7}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:18px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:12px 16px;border-radius:14px;border:1px solid var(--ring);background:#0f1525a0;color:#EAF2FF;font-weight:700}
.btn:hover{border-color:#355}
.btn.primary{background:var(--brand-grad);color:#00150f;border:none}

/* Figuras del hero */
.pieces{position:relative;height:140px;margin-top:18px;pointer-events:none}
.pieces > *{filter:drop-shadow(0 10px 24px rgba(0,0,0,.35))}
.c1{--a:#22d3ee;--b:#ff4d6d}
.c2{--a:#7dd3fc;--b:#ff6b81}
.c3{--a:#5eead4;--b:#ff8fa3}
.c4{--a:#38bdf8;--b:#ef4444}
.s-sm{width:58px;height:58px}.s-md{width:82px;height:82px}.s-lg{width:110px;height:110px}

/* ===== Secciones & cards ===== */
.section{padding-block:48px;position:relative}
.section h2{font-family:"Plus Jakarta Sans",Inter,sans-serif;font-weight:800;font-size:clamp(22px,3.2vw,26px);letter-spacing:.2px;margin:0 0 16px}
.muted{color:var(--muted)}
.grid{display:grid;gap:18px}
.two{grid-template-columns:1.1fr .9fr}
.two-equal{grid-template-columns:1fr 1fr}
@media (max-width:960px){.two,.two-equal{grid-template-columns:1fr}}
.card{position:relative;overflow:hidden;border-radius:18px;padding:20px;background:linear-gradient(180deg,#0f1525cc,#0f1525a6);border:1px solid #212a42;box-shadow:var(--shadow)}
.card::before{content:"";position:absolute;inset:-2px;border-radius:20px;padding:2px;background:
  linear-gradient(140deg,rgba(34,211,238,.35),rgba(255,77,109,.35),transparent);
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;pointer-events:none}
.column{display:flex;flex-direction:column;gap:12px}
.meta{display:flex;flex-wrap:wrap;gap:8px}
.pill.small{padding:6px 10px;font-weight:700}
.list{margin:8px 0 0 18px;line-height:1.7}

/* Schedule */
.schedule{display:grid;gap:14px}
.slot{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:16px;border:1px solid #1e2846;border-radius:14px;background:#111a30;flex-wrap:wrap}
.slot strong{font-weight:800}

/* Perfil profe */
.profile{display:flex;gap:14px;align-items:center}
.avatar{width:64px;height:64px;border-radius:16px;border:1px solid #1e2846;object-fit:cover;display:block;background:#0f1525}

/* FAQ */
details{border:1px solid #1e2846;border-radius:14px;padding:14px;background:#0f1525}
summary{cursor:pointer;font-weight:800}

/* Planes */
.plan{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px;border:1px solid #1e2846;border-radius:14px;background:#0f1525}
.plan-title{font-weight:800}

/* Utils */
.mt-8{margin-top:8px}.mt-10{margin-top:10px}.mt-14{margin-top:14px}
.small{font-size:13px}.center{text-align:center}

/* Reveal */
.reveal{opacity:0;transform:translateY(8px);transition:opacity .4s ease, transform .4s ease}
.reveal.in{opacity:1;transform:none}

/* ===== Figuras 3D reutilizables (decor) ===== */
.decor{position:absolute;inset:auto 0 -6px auto;pointer-events:none}
.decor > *{position:absolute;opacity:.9;animation:float3d 20s linear infinite}

@keyframes float3d{0%{transform:translateY(0) rotate(0)}50%{transform:translateY(-8px) rotate(180deg)}100%{transform:translateY(0) rotate(360deg)}}
@media (prefers-reduced-motion:reduce){.decor > *, .pieces > *{animation:none}}

.iso-cube{
  position:absolute; left:0; top:0;
  transform:rotateX(20deg) rotateY(35deg);
  background:linear-gradient(135deg,var(--a),var(--b));
  border-radius:10px;
  box-shadow:inset 0 -18px 28px rgba(0,0,0,.35), inset 0 18px 28px rgba(255,255,255,.06);
}
.iso-cube::before, .iso-cube::after{
  content:""; position:absolute; inset:0; border-radius:10px; pointer-events:none;
}
.iso-cube::before{background:linear-gradient(180deg,transparent,rgba(0,0,0,.35))}
.iso-cube::after{background:radial-gradient(60% 60% at 30% 25%,rgba(255,255,255,.25),transparent 60%)}

.torus{position:absolute; left:120px; top:-10px; border-radius:50%;
  background:conic-gradient(from 0deg,var(--a),var(--b),var(--a));
  -webkit-mask:radial-gradient(circle, transparent 52%, #000 53%);
          mask:radial-gradient(circle, transparent 52%, #000 53%);
  box-shadow:0 0 24px rgba(255,77,109,.25), inset 0 0 24px rgba(34,211,238,.25);
}

.ring{position:absolute; left:40%; top:-6px; width:70px; height:70px; border-radius:50%;
  border:8px solid rgba(255,255,255,.06); box-shadow:inset 0 0 18px var(--a);}

.sphere{position:absolute; left:65%; top:8px; border-radius:50%;
  background:
   radial-gradient(120% 120% at 30% 25%, rgba(255,255,255,.35), transparent 50%),
   radial-gradient(90% 90% at 70% 70%, rgba(0,0,0,.45), transparent 55%),
   linear-gradient(135deg,var(--a),var(--b));
  box-shadow:0 20px 26px rgba(0,0,0,.35);
}

.capsule{position:absolute; right:10%; top:-26px; width:110px; height:42px; border-radius:999px;
  background:linear-gradient(90deg,var(--a),var(--b)); box-shadow:inset 0 8px 18px rgba(255,255,255,.08), 0 14px 26px rgba(0,0,0,.35)}

.diamond{position:absolute; right:2%; top:10px; width:54px; height:54px;
  background:linear-gradient(135deg,var(--a),var(--b)); transform:rotate(45deg) skewY(6deg);
  box-shadow:inset 0 -12px 20px rgba(0,0,0,.35), 0 12px 22px rgba(0,0,0,.25)}
.cone3d{position:absolute; left:220px; top:12px; width:0; height:0;
  border-left:28px solid transparent; border-right:28px solid transparent; border-bottom:84px solid var(--secondary);
  filter:drop-shadow(0 8px 20px rgba(255,77,109,.45))}
.pyramid{position:absolute; left:12%; top:-16px; width:70px; height:70px;
  background:conic-gradient(from 45deg,var(--a),var(--b),var(--a));
  clip-path:polygon(50% 0, 100% 70%, 50% 100%, 0 70%);
  box-shadow:0 16px 26px rgba(0,0,0,.35)}
/* tamaños responsivos para las decor */
.section .iso-cube{left:-6px; top:-10px}
.section .ring{right:16px}
.section .sphere{right:22%; left:auto}
.section .capsule{right:8%}
.section .diamond{right:2%}
.section .torus{left:auto; right:12%}
.section .pyramid{left:6%}

/* FAQ grid spacing */
.faq-grid{grid-template-columns:1fr 1fr}
@media (max-width:900px){ .faq-grid{grid-template-columns:1fr} }

/* ===== Móvil: botón y panel (con fix de stacking) ===== */
.hamburger{display:none;align-items:center;justify-content:center;width:40px;height:40px;border-radius:12px;border:1px solid #1a2235;background:#0f1525;color:#cfe3ff}
.hamburger svg{width:22px;height:22px}
@media (max-width:920px){.nav{display:none}.hamburger{display:flex}}

.mobile-panel{
  position:fixed;inset:0;z-index:60;
  background:rgba(7,11,20,.6);backdrop-filter:blur(10px);
  opacity:0;pointer-events:none;transition:opacity .28s ease;
  display:grid;grid-template-rows:auto 1fr;
}
.mobile-panel.open{opacity:1;pointer-events:auto}
.mobile-backdrop{position:absolute;inset:0;z-index:0}
.mobile-sheet{
  position:relative;z-index:1;
  margin:16px auto;padding:20px;border-radius:20px;max-width:640px;width:calc(100% - 32px);
  background:linear-gradient(180deg,#0f1525f2,#0f1525e6);border:1px solid #1e2846;box-shadow:var(--shadow);
  transform:translateY(-18px);opacity:0;transition:transform .28s ease, opacity .28s ease;
}
.mobile-panel.open .mobile-sheet{transform:none;opacity:1}
.mobile-menu{display:flex;flex-direction:column;gap:14px}
.mobile-menu a{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;border-radius:14px;border:1px solid #1f2a48;background:#121a31;color:#d5def1;font-weight:700}
.mobile-menu .cta{color:#eeeeee!important}

/* Offset anclas para navbar sticky */
header.hero, .section, section[id]{scroll-margin-top:calc(var(--navH) + 10px)}
:focus-visible{outline:2px solid #7fe9d1;outline-offset:2px;border-radius:12px}

/* Móvil */
@media (max-width:520px){
  .btn{padding:12px 14px}
  .two-equal{grid-template-columns:1fr}
}
