/* Studio3D — colores tomados del logo (verde #00cb85 → azul #0082da) */
:root {
  --verde: #00b878;
  --azul: #0082da;
  --grad: linear-gradient(90deg, #00cb85, #0082da);
  --tinta: #0b1220;
  --texto: #2a3342;
  --suave: #5b6576;
  --borde: #e3e8ef;
  --fondo: #ffffff;
  --fondo-alt: #f3f7fa;
  --radio: 14px;
  --sombra: 0 6px 24px rgba(11, 18, 32, .08);
  --ancho: 1160px;
  --fuente: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { margin: 0; font-family: var(--fuente); color: var(--texto); background: var(--fondo); line-height: 1.6; font-size: 17px; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--azul); }
h1, h2, h3 { color: var(--tinta); line-height: 1.2; margin: 0 0 .6em; }
h1 { font-size: clamp(2rem, 4.5vw, 3.1rem); letter-spacing: -.02em; }
h2 { font-size: clamp(1.55rem, 3vw, 2.2rem); letter-spacing: -.01em; }
h3 { font-size: 1.15rem; }
p { margin: 0 0 1em; }

.cont { width: 100%; max-width: var(--ancho); margin: 0 auto; padding: 0 20px; }
.estrecho { max-width: 820px; }
.centro { text-align: center; }
.saltar { position: absolute; left: -999px; top: 0; background: var(--tinta); color: #fff; padding: 8px 14px; z-index: 100; }
.saltar:focus { left: 8px; }

/* Cabecera */
.cab { position: sticky; top: 0; z-index: 50; background: rgba(255, 255, 255, .95); backdrop-filter: blur(8px); border-bottom: 1px solid var(--borde); }
.cab-in { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.logo img { width: 170px; height: auto; }
.menu ul { list-style: none; display: flex; gap: 26px; align-items: center; margin: 0; padding: 0; }
.menu a { color: var(--tinta); text-decoration: none; font-weight: 600; font-size: .97rem; }
.menu a:hover, .menu a[aria-current="page"] { color: var(--azul); }
.menu-btn { display: none; background: none; border: 0; padding: 10px; cursor: pointer; }
.menu-btn span { display: block; width: 24px; height: 2px; background: var(--tinta); margin: 5px 0; transition: .2s; }

/* Botones */
.btn { display: inline-block; background: var(--grad); color: #fff !important; text-decoration: none; font-weight: 700; padding: 13px 24px; border-radius: 999px; border: 0; cursor: pointer; font-size: 1rem; font-family: inherit; transition: transform .15s, box-shadow .15s; }
.btn:hover { transform: translateY(-1px); box-shadow: 0 8px 20px rgba(0, 130, 218, .3); }
.btn-sec { background: transparent; color: var(--tinta) !important; box-shadow: inset 0 0 0 2px var(--tinta); }
.btn-sec:hover { box-shadow: inset 0 0 0 2px var(--azul); color: var(--azul) !important; }
.btn-sm { padding: 8px 16px; font-size: .9rem; }
.acciones { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 1.4em; }
.acciones.centro { justify-content: center; }

/* Héroe */
.heroe { background: radial-gradient(1200px 500px at 85% -10%, rgba(0, 203, 133, .14), transparent 60%), radial-gradient(900px 500px at 0% 110%, rgba(0, 130, 218, .12), transparent 60%), var(--fondo-alt); padding: 64px 0 72px; }
.heroe-sec { padding-top: 32px; }
.heroe-in { display: grid; grid-template-columns: 1.1fr 1fr; gap: 48px; align-items: center; }
.heroe-img img { border-radius: 22px; box-shadow: var(--sombra); }
.antetitulo { text-transform: uppercase; letter-spacing: .08em; font-size: .8rem; font-weight: 700; color: var(--verde); margin-bottom: .8em; }
.grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lead { font-size: 1.15rem; color: var(--suave); max-width: 60ch; }
.estrecho .lead, .centro .lead { margin-left: auto; margin-right: auto; }
.sellos { list-style: none; display: flex; flex-wrap: wrap; gap: 28px; padding: 0; margin: 2em 0 0; color: var(--suave); font-size: .92rem; }
.sellos strong { display: block; color: var(--tinta); font-size: 1.25rem; }

/* Secciones */
.sec { padding: 72px 0; }
.sec-primera { padding-top: 24px; }
.sec-alt { background: var(--fondo-alt); }
.sec-osc { background: var(--tinta); color: #c9d3e0; }
.sec-osc h2, .sec-osc h3 { color: #fff; }
.sec-osc .tarjeta { background: #131d31; border-color: #22304a; }
.sec-osc .tarjeta p { color: #a9b6c8; }
.sec-osc .btn-sec { color: #fff !important; box-shadow: inset 0 0 0 2px #fff; }
.intro { font-size: 1.08rem; color: var(--suave); max-width: 70ch; margin-bottom: 2em; }
.sec-osc .intro { color: #a9b6c8; }

.rejilla { display: grid; gap: 24px; }
.r2 { grid-template-columns: repeat(2, 1fr); }
.r3 { grid-template-columns: repeat(3, 1fr); }
.r4 { grid-template-columns: repeat(4, 1fr); }
.alinear { align-items: center; gap: 48px; }
.alinear > img { border-radius: 20px; box-shadow: var(--sombra); }

.tarjeta { background: #fff; border: 1px solid var(--borde); border-radius: var(--radio); padding: 26px; }
.tarjeta p:last-child { margin-bottom: 0; }
.tarjeta-img { padding: 0; overflow: hidden; display: flex; flex-direction: column; }
.tarjeta-img img { aspect-ratio: 16 / 10; object-fit: cover; width: 100%; }
.tarjeta-img > div { padding: 24px; }
.tarjeta.enlace { text-decoration: none; color: inherit; transition: transform .15s, box-shadow .15s; }
.tarjeta.enlace:hover { transform: translateY(-3px); box-shadow: var(--sombra); }
.tarjeta.enlace img { border-radius: 10px; margin-bottom: 16px; aspect-ratio: 1; object-fit: cover; width: 100%; }
.tarjeta.enlace h3 { color: var(--azul); }
.sec-osc .tarjeta.enlace h3 { color: #4fd6a6; }

.pasos { list-style: none; counter-reset: paso; display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; padding: 0; margin: 0; }
.pasos li { counter-increment: paso; position: relative; padding-top: 56px; }
.pasos li::before { content: counter(paso); position: absolute; top: 0; left: 0; width: 42px; height: 42px; border-radius: 50%; background: var(--grad); color: #fff; font-weight: 800; display: grid; place-items: center; }
.pasos p { color: var(--suave); }

.lista-check { list-style: none; padding: 0; margin: 0 0 1.2em; }
.lista-check li { position: relative; padding-left: 30px; margin-bottom: .6em; }
.lista-check li::before { content: ""; position: absolute; left: 0; top: .35em; width: 18px; height: 18px; border-radius: 50%; background: var(--grad); -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Ccircle cx='10' cy='10' r='10'/%3E%3C/svg%3E"); }
.lista-check li::after { content: ""; position: absolute; left: 6px; top: calc(.35em + 4px); width: 5px; height: 9px; border: solid #fff; border-width: 0 2px 2px 0; transform: rotate(45deg); }

/* Sedes y agendar */
.sede h3 { font-size: 1.3rem; }
.ciudades { margin-top: 32px; }
.ciudad { text-align: center; padding: 36px 26px; }
.ciudad h2 { margin-bottom: .2em; }
.ciudad .btn { margin-top: .6em; }
.aviso { margin-top: 28px; background: #eefaf5; border: 1px solid #c7eedc; border-radius: var(--radio); padding: 20px 24px; }
.aviso p:last-child { margin: 0; }

/* Preguntas frecuentes */
.faq details { border-bottom: 1px solid var(--borde); padding: 18px 0; }
.faq summary { cursor: pointer; font-weight: 700; color: var(--tinta); list-style: none; display: flex; justify-content: space-between; gap: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-size: 1.4rem; line-height: 1; color: var(--azul); }
.faq details[open] summary::after { content: "−"; }
.faq details p { margin: .8em 0 0; color: var(--suave); }

/* Migas de pan */
.migas ol { list-style: none; display: flex; flex-wrap: wrap; gap: 6px; padding: 16px 20px 0; margin: 0; font-size: .88rem; color: var(--suave); }
.migas li + li::before { content: "›"; margin-right: 6px; }
.migas a { color: var(--suave); }

/* Formulario */
.form-wa { display: grid; gap: 14px; color: var(--texto); }
.form-wa label { display: grid; gap: 6px; font-weight: 600; font-size: .95rem; }
.form-wa input:not([type="radio"]), .form-wa select { font: inherit; padding: 11px 13px; border: 1px solid #cdd5e0; border-radius: 10px; background: #fff; }
.form-wa fieldset { border: 0; padding: 0; margin: 0; display: flex; gap: 18px; flex-wrap: wrap; }
.form-wa legend { font-weight: 600; font-size: .95rem; margin-bottom: 6px; width: 100%; }
.form-wa .radio { display: flex; align-items: center; gap: 6px; font-weight: 500; }
.form-wa .nota { font-size: .85rem; color: var(--suave); margin: 0; }
.sec-osc .form-wa { background: #fff; }

/* Pie */
.pie { background: #070c16; color: #9aa7ba; padding: 56px 0 24px; font-size: .95rem; }
.pie-in { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 32px; }
.pie h3 { color: #fff; font-size: 1rem; }
.pie a { color: #d5dde8; text-decoration: none; }
.pie a:hover { color: #4fd6a6; }
.pie-logo { width: 170px; filter: brightness(0) invert(1); margin-bottom: 14px; }
.pie-links { list-style: none; padding: 0; margin: 0; }
.pie-links li { margin-bottom: .45em; }
.pie-legal { border-top: 1px solid #1a2436; margin-top: 36px; padding-top: 20px; font-size: .85rem; }

.wa-flot { position: fixed; right: 18px; bottom: 18px; z-index: 60; width: 58px; height: 58px; border-radius: 50%; background: #25d366; color: #fff; display: grid; place-items: center; box-shadow: 0 8px 24px rgba(0, 0, 0, .25); }

:focus-visible { outline: 3px solid var(--azul); outline-offset: 2px; }

/* Responsivo */
@media (max-width: 980px) {
  .r3, .r4, .pasos { grid-template-columns: repeat(2, 1fr); }
  .pie-in { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 760px) {
  body { font-size: 16px; }
  .cont { padding: 0 16px; }
  .menu-btn { display: block; }
  .menu { position: absolute; top: 68px; left: 0; right: 0; background: #fff; border-bottom: 1px solid var(--borde); display: none; }
  .menu.abierto { display: block; }
  .menu ul { flex-direction: column; align-items: stretch; gap: 0; padding: 8px 16px 16px; }
  .menu li a { display: block; padding: 12px 0; }
  .menu li a.btn { text-align: center; margin-top: 8px; }
  .heroe { padding: 36px 0 48px; }
  .heroe-in, .r2, .r3, .r4, .pasos, .alinear { grid-template-columns: 1fr; }
  .heroe-in { gap: 28px; }
  .sec { padding: 52px 0; }
  .pie-in { grid-template-columns: 1fr; }
  .acciones .btn { flex: 1 1 100%; text-align: center; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn, .tarjeta.enlace { transition: none; }
}