/* ===== IMPERIUM — variables ===== */
:root {
  --fondo: #000000;
  --panel: #141414;
  --borde: #2a2a2a;
  --oro: #C9A24A;
  --oro-claro: #F0D98A;
  --oro-grad: linear-gradient(135deg, #C9A24A 0%, #F0D98A 50%, #B8903A 100%);
  --blanco: #F5F1E8;
  --gris: #9A9A9A;
  --rojo: #D9534F;
  --verde: #6BBF7A;
  --cuerpo: 'Montserrat', system-ui, -apple-system, sans-serif;
  --ancho: 1100px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--fondo);
  color: var(--blanco);
  font-family: var(--cuerpo);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--oro-claro); }

/* ===== Secciones ===== */
.seccion {
  max-width: var(--ancho);
  margin: 0 auto;
  padding: 72px 20px;
  border-bottom: 1px solid var(--borde);
}
.seccion:last-of-type { border-bottom: none; }

h1, h2, h3 { margin: 0 0 16px; line-height: 1.15; font-weight: 800; text-transform: uppercase; }
h1 { font-size: clamp(30px, 5vw, 56px); text-align: center; letter-spacing: .01em; }
h1 em { font-style: normal; background: var(--oro-grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
h2 { font-size: clamp(24px, 3.4vw, 38px); text-align: center; margin-bottom: 36px; }
h3 { font-size: 18px; letter-spacing: .04em; }

.sub { color: var(--gris); font-size: 18px; max-width: 720px; margin: 0 auto 32px; text-align: center; }
.texto { max-width: 760px; margin: 0 auto 18px; color: #d8d3c7; }
.centrado { text-align: center; }
.nota { color: var(--gris); text-align: center; max-width: 720px; margin: 28px auto 0; font-size: 15px; }

/* ===== Botón ===== */
.btn {
  display: inline-block;
  background: var(--oro-grad);
  color: #000;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .04em;
  text-decoration: none;
  padding: 16px 34px;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-family: inherit;
  font-size: 15px;
}
.btn:hover { filter: brightness(1.08); }
.btn:focus-visible { outline: 3px solid var(--oro-claro); outline-offset: 3px; }

/* ===== Portada ===== */
.portada { text-align: center; padding-top: 40px; }
.logo { width: 200px; margin: 0 auto 24px; }
.badge {
  display: inline-flex; align-items: center; gap: 8px;
  border: 1px solid var(--borde); border-radius: 999px;
  padding: 6px 16px; font-size: 13px; color: var(--gris); margin: 0 0 24px;
}
.punto { width: 8px; height: 8px; border-radius: 50%; background: var(--oro); }
.video {
  position: relative; display: block; max-width: 760px; margin: 0 auto 32px;
  aspect-ratio: 16/9; background: var(--panel); border: 1px solid var(--borde); border-radius: 10px; overflow: hidden;
}
.video img { width: 100%; height: 100%; object-fit: cover; }
.play {
  position: absolute; inset: 0; display: grid; place-items: center;
  font-size: 48px; color: var(--oro-claro); text-decoration: none;
}

/* ===== De esto → a esto ===== */
.dos-col { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.col { background: var(--panel); border: 1px solid var(--borde); border-radius: 10px; padding: 28px; }
.col ul { list-style: none; padding: 0; margin: 0; }
.col li { padding: 10px 0 10px 28px; position: relative; border-top: 1px solid var(--borde); }
.col li:first-child { border-top: none; }
.col li::before { position: absolute; left: 0; font-weight: 800; }
.col-antes li::before { content: "✕"; color: var(--rojo); }
.col-despues li::before { content: "✓"; color: var(--verde); }
.col-despues { border-color: var(--oro); }
.col-despues h3 { color: var(--oro-claro); }

/* ===== Galería historia ===== */
.galeria { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 36px; }
figure { margin: 0; }
.galeria img { aspect-ratio: 3/4; object-fit: cover; border-radius: 8px; background: var(--panel); border: 1px solid var(--borde); }
figcaption { font-size: 13px; color: var(--gris); margin-top: 8px; text-align: center; }

/* ===== Resultados ===== */
.resultados { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.resultados img { border-radius: 8px; border: 1px solid var(--oro); background: var(--panel); aspect-ratio: 4/3; object-fit: cover; }
.resultados figcaption { color: var(--oro-claro); font-weight: 600; }

/* ===== Programa ===== */
.fase { display: grid; grid-template-columns: 1fr 1.4fr; gap: 24px; padding: 28px 0; border-top: 1px solid var(--borde); }
.fase:first-of-type { border-top: none; }
.fase header p { margin: 0; color: var(--gris); }
.fase-num { display: block; color: var(--oro); font-weight: 800; letter-spacing: .08em; font-size: 13px; margin-bottom: 6px; }
.fase ol { margin: 0; padding: 0; list-style: none; counter-reset: modulo; }
.fase ol[start="4"] { counter-reset: modulo 3; }
.fase ol[start="7"] { counter-reset: modulo 6; }
.fase ol[start="10"] { counter-reset: modulo 9; }
.fase li { counter-increment: modulo; padding: 12px 0 12px 48px; position: relative; font-weight: 600; border-top: 1px solid var(--borde); }
.fase li:first-child { border-top: none; }
.fase li::before {
  content: counter(modulo, decimal-leading-zero);
  position: absolute; left: 0; top: 12px;
  color: var(--oro); font-weight: 800;
}

/* ===== Qué incluye ===== */
.incluye { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.incluye > div { background: var(--panel); border: 1px solid var(--borde); border-radius: 10px; padding: 24px; }
.incluye h3 { font-size: 16px; color: var(--oro-claro); }
.incluye p { margin: 0; color: #d8d3c7; font-size: 15px; }

/* ===== FAQ ===== */
.faq { max-width: 760px; margin: 0 auto; }
details { border-top: 1px solid var(--borde); }
details:last-child { border-bottom: 1px solid var(--borde); }
summary { cursor: pointer; padding: 18px 40px 18px 0; font-weight: 600; list-style: none; position: relative; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "▾"; position: absolute; right: 4px; color: var(--oro); transition: transform .2s; }
details[open] summary::after { transform: rotate(180deg); }
details p { margin: 0 0 18px; color: #d8d3c7; }

/* ===== CTA + formulario ===== */
.cta { text-align: center; }
.form { max-width: 460px; margin: 0 auto; display: grid; gap: 12px; }
.form input {
  width: 100%; padding: 14px 16px; border-radius: 6px;
  border: 1px solid var(--borde); background: var(--panel); color: var(--blanco);
  font-family: inherit; font-size: 15px;
}
.form input:focus { outline: 2px solid var(--oro); border-color: var(--oro); }
.legal-mini { font-size: 12px; color: var(--gris); margin: 4px 0 0; }

/* ===== Footer ===== */
footer { text-align: center; padding: 48px 20px 40px; border-top: 1px solid var(--borde); color: var(--gris); font-size: 14px; }
.logo-footer { width: 90px; margin: 0 auto 12px; opacity: .8; }
footer nav { display: flex; flex-wrap: wrap; justify-content: center; gap: 18px; margin-top: 12px; }
footer nav a { color: var(--gris); text-decoration: none; }
footer nav a:hover { color: var(--oro-claro); }

/* ===== Móvil ===== */
@media (max-width: 820px) {
  .seccion { padding: 52px 18px; }
  .dos-col, .resultados, .incluye, .fase { grid-template-columns: 1fr; }
  .galeria { grid-template-columns: 1fr 1fr; }
  .logo { width: 150px; }
  .btn { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  summary::after { transition: none; }
}