:root{
  --bg:#0b0f1a; --panel:#0f1525cc; --text:#E6EAF2; --muted:#C7D2E1;
  --primary:#34d399; --primary-2:#22d3ee;
  --brand-grad:linear-gradient(120deg,var(--primary),var(--primary-2));
  --ring:#2A3657; --radius:16px; --shadow:0 10px 30px rgba(0,0,0,.25);
  --gutterX: clamp(18px, 6.5vw, 56px);
}
*{box-sizing:border-box}
html,body{height:100%}
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));
}

/* ===== Fondo “código” ===== */
.bg-code{position:fixed;inset:0;z-index:-3;pointer-events:none;
  background:
    radial-gradient(1200px 600px at 10% 10%, #123136 0%, transparent 55%),
    radial-gradient(900px 500px at 80% 20%, #0a2a33 0%, transparent 60%),
    radial-gradient(1000px 600px at 20% 80%, #06343d 0%, transparent 55%),
    #0b0f1a;
}
.code-grid{position:fixed;inset:0;z-index:-2;opacity:.28;pointer-events:none;
  background:
    repeating-linear-gradient(to right, #00ffe626 0 1px, transparent 1px 48px),
    repeating-linear-gradient(to bottom,#00e5ff26 0 1px, transparent 1px 48px);
  mix-blend:screen
}
.code-stream{position:fixed;inset:-20vh -10vw;z-index:-1;opacity:.42;filter:blur(.1px);pointer-events:none}
.code-stream span{
  position:absolute;white-space:nowrap;font:700 13px/1.6 ui-monospace,Menlo,Consolas,monospace;
  letter-spacing:.6px;color:#aaffef;text-shadow:0 0 10px rgba(34,211,238,.25);
  animation:float 22s linear infinite;will-change:transform;
}
.code-stream span:nth-child(1){top:12%;left:-10%;animation-duration:24s;opacity:.9}
.code-stream span:nth-child(2){top:46%;left:-6%; animation-duration:28s;opacity:.85}
.code-stream span:nth-child(3){top:78%;left:-12%;animation-duration:26s;opacity:.8}
@keyframes float{to{transform:translate3d(22vw,-12vh,0)}}

/* ===== 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:#04201a!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;
  backface-visibility:hidden;-webkit-font-smoothing:antialiased;
}
.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:#052920;border:none}

/* Secciones & cards */
.section{padding-block:48px}
.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(52,211,153,.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}

/* Timeline */
.timeline{display:grid;gap:16px}
.tl-item{position:relative;padding-left:22px}
.tl-item::before{content:"";position:absolute;left:8px;top:8px;width:6px;height:6px;border-radius:999px;background:var(--primary-2);box-shadow:0 0 0 6px rgba(34,211,238,.10)}
.pill.small{padding:6px 10px;font-weight:700}

/* 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}

/* Aviso seminario */
.banner{border:1px dashed #2d4;background:#0d1e1a;padding:14px;border-radius:14px}
.badge{display:inline-flex;align-items:center;gap:8px;padding:6px 10px;border-radius:999px;border:1px solid #204d3c;background:#0e1f1a;font-weight:800;color:#8ff5cf;font-size:12px}

/* FAQ */
details{border:1px solid #1e2846;border-radius:14px;padding:14px;background:#0f1525}
summary{cursor:pointer;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}
.list{margin:8px 0 0 18px;line-height:1.7}

/* Reveal */
.reveal{opacity:0;transform:translateY(8px);transition:opacity .4s ease, transform .4s ease}
.reveal.in{opacity:1;transform:none}

/* Mobile tweaks */
@media (max-width:520px){.btn{padding:12px 14px}.two-equal{grid-template-columns:1fr}}

/* Reduced motion */
@media (prefers-reduced-motion:reduce){.code-stream span{animation:none}.reveal{transition:none}}

/* Focus */
:focus-visible{outline:2px solid #7fe9d1;outline-offset:2px;border-radius:12px}

/* Fallback gradiente */
.no-grad-text .title .grad{
  background:none!important;-webkit-text-fill-color:unset!important;color:var(--primary-2)!important;text-shadow:0 2px 8px rgba(0,0,0,.35);
}

/* ===== Móvil: botón y panel ===== */
.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}

/* El contenedor NO tiene transform (evita el bug de iOS) */
.mobile-panel{
  position:fixed;inset:0;z-index:60;display:grid;grid-template-rows:auto 1fr;
  background:rgba(7,11,20,.6);backdrop-filter:blur(10px);
  opacity:0;pointer-events:none;transition:opacity .28s ease;
}
.mobile-panel.open{opacity:1;pointer-events:auto}

/* Animamos solo la hoja */
.mobile-sheet{
  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-backdrop{position:fixed;inset:0}
.mobile-sheet{
  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)
}
.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}

@media (max-width:920px){.nav{display:none}.hamburger{display:flex}}

/* Botón con gradiente: texto más oscuro para buen contraste en móvil */
.btn.primary{
  background: var(--brand-grad);
  color: #001713;                 /* más contraste */
  border: none;
  font-weight: 800;
}

/* Asegura el mismo color en la CTA del menú móvil */
.mobile-menu .cta{ color:#dddddd !important; }

/* Navegación con anclas nativa y suave */
html { scroll-behavior: smooth; }

/* Offset para que la sección no quede tapada por la navbar sticky */
:root { --navH: 84px; }          /* alto aprox. navbar desktop */
@media (max-width:920px){ :root { --navH: 72px; } }

header.hero, .section { scroll-margin-top: calc(var(--navH) + 10px); }


section[id] { scroll-margin-top: 80px; }

/* Asegurá el orden de apilado del panel móvil */
.mobile-panel{ position:fixed; inset:0; z-index:60; }

/* El backdrop va DETRÁS de la sheet y no bloquea sus links */
.mobile-backdrop{
  position:absolute;   /* ← antes estaba fixed */
  inset:0;
  z-index:0;
}

/* La hoja del menú por encima del backdrop */
.mobile-sheet{
  position:relative;
  z-index:1;
}

/* (Opcional por seguridad) los <a> del menú aún más arriba */
.mobile-menu a{ position:relative; z-index:2; }


