/* =========================================================
   alejandronicolas.es — hoja de estilos
   Colores: azul tinta (pantallas), blanco mármol, verde de
   subida (gráfico) y oro de las vetas del mármol.
   ========================================================= */

@font-face { font-family: "DM Serif Display"; src: url("../fonts/dm-serif-display-latin-400-normal.woff2") format("woff2"); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: "DM Serif Display"; src: url("../fonts/dm-serif-display-latin-400-italic.woff2") format("woff2"); font-weight: 400; font-style: italic; font-display: swap; }
@font-face { font-family: "Plus Jakarta Sans"; src: url("../fonts/plus-jakarta-sans-latin-400-normal.woff2") format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Plus Jakarta Sans"; src: url("../fonts/plus-jakarta-sans-latin-500-normal.woff2") format("woff2"); font-weight: 500; font-display: swap; }
@font-face { font-family: "Plus Jakarta Sans"; src: url("../fonts/plus-jakarta-sans-latin-600-normal.woff2") format("woff2"); font-weight: 600; font-display: swap; }
@font-face { font-family: "Plus Jakarta Sans"; src: url("../fonts/plus-jakarta-sans-latin-700-normal.woff2") format("woff2"); font-weight: 700; font-display: swap; }

:root {
  --tinta: #12233b;        /* azul noche: textos y bloques oscuros */
  --tinta-suave: #3c4d66;  /* texto secundario */
  --marmol: #f3f5f8;       /* fondo de secciones alternas */
  --blanco: #ffffff;
  --verde: #16804a;        /* subida, botones principales */
  --verde-hover: #106a3c;
  --verde-claro: #e3f2e9;
  --oro: #a9844e;          /* detalles finos */
  --linea: #d8dee7;

  --serif: "DM Serif Display", Georgia, "Times New Roman", serif;
  --sans: "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  --ancho: 1160px;
  --radio: 14px;
  --radio-sm: 8px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--tinta);
  background: var(--blanco);
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
:focus-visible { outline: 3px solid var(--verde); outline-offset: 3px; border-radius: 4px; }

h1, h2, h3 { font-family: var(--serif); font-weight: 400; line-height: 1.1; margin: 0 0 .5em; letter-spacing: -0.01em; }
h1 { font-size: clamp(2.6rem, 6vw, 4.6rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: 1.5rem; }
p { margin: 0 0 1em; }
.texto-grande { font-size: 1.2rem; color: var(--tinta-suave); max-width: 38em; }

.contenedor { width: min(var(--ancho), 100% - 32px); margin-inline: auto; }
.seccion { padding: clamp(64px, 9vw, 112px) 0; }
.seccion--marmol { background: var(--marmol); }
.seccion--tinta { background: var(--tinta); color: var(--blanco); }
.seccion--tinta .texto-grande { color: #c6d0de; }

.saltar { position: absolute; left: -9999px; top: 0; background: var(--tinta); color: #fff; padding: 10px 16px; z-index: 100; }
.saltar:focus { left: 16px; top: 16px; }

/* ---------- Botones ---------- */
.boton {
  display: inline-flex; align-items: center; justify-content: center; gap: .5em;
  font: 600 1rem/1 var(--sans);
  padding: 16px 26px; border-radius: 999px; text-decoration: none;
  border: 2px solid transparent; cursor: pointer;
  transition: background-color .2s, color .2s, border-color .2s;
}
.boton--verde { background: var(--verde); color: #fff; }
.boton--verde:hover { background: var(--verde-hover); }
.boton--borde { border-color: var(--tinta); color: var(--tinta); background: transparent; }
.boton--borde:hover { background: var(--tinta); color: #fff; }
.seccion--tinta .boton--borde { border-color: #fff; color: #fff; }
.seccion--tinta .boton--borde:hover { background: #fff; color: var(--tinta); }
.botones { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }

/* ---------- Cabecera ---------- */
.cabecera {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.94);
  backdrop-filter: saturate(150%) blur(8px);
  border-bottom: 1px solid var(--linea);
}
.cabecera__fila { display: flex; align-items: center; justify-content: space-between; height: 76px; gap: 24px; }
.marca { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.marca__nombre { font-family: var(--serif); font-size: 1.45rem; line-height: 1; white-space: nowrap; }
.marca svg { flex: none; }
.menu { display: flex; align-items: center; gap: 6px; list-style: none; margin: 0; padding: 0; }
.menu a { display: block; padding: 10px 14px; font-weight: 500; font-size: .98rem; text-decoration: none; border-radius: 999px; }
.menu a:hover { background: var(--marmol); }
.menu a[aria-current="page"] { color: var(--verde); }
.menu .boton { padding: 12px 22px; margin-left: 8px; }
.menu .boton:hover { background: var(--verde-hover); }
.menu__abrir { display: none; background: none; border: 0; padding: 10px; cursor: pointer; color: var(--tinta); }

@media (max-width: 900px) {
  .menu__abrir { display: block; }
  .menu {
    position: absolute; top: 76px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: #fff; border-bottom: 1px solid var(--linea);
    padding: 8px 16px 20px; display: none;
  }
  .menu.abierto { display: flex; }
  .menu a { padding: 14px 8px; border-radius: 0; border-bottom: 1px solid var(--marmol); font-size: 1.05rem; }
  .menu .boton { margin: 14px 0 0; border-radius: 999px; border-bottom: 0; }
}

/* ---------- Portada ---------- */
.portada { padding: clamp(48px, 7vw, 96px) 0 0; overflow: hidden; }
.portada__rejilla { display: grid; grid-template-columns: 1.05fr 1fr; gap: 48px; align-items: center; }
.portada h1 { margin-bottom: .35em; }
.portada h1 em { font-style: italic; color: var(--verde); }
.portada__credencial { display: flex; align-items: center; gap: 10px; margin-top: 36px; font-size: .92rem; color: var(--tinta-suave); }
.portada__credencial span { display: inline-block; width: 28px; height: 1px; background: var(--oro); }

.grafico { position: relative; }
.grafico svg { width: 100%; height: auto; display: block; overflow: visible; }
.grafico__linea { fill: none; stroke: var(--verde); stroke-width: 3.2; stroke-linecap: round; stroke-linejoin: round; stroke-dasharray: 1600; stroke-dashoffset: 1600; animation: dibujar 2.6s .3s cubic-bezier(.45,.05,.25,1) forwards; }
.grafico__area { fill: url(#degradado); opacity: 0; animation: aparecer 1s 2.2s ease forwards; }
.grafico__rejilla line { stroke: var(--linea); stroke-width: 1; }
.grafico__eje { font: 500 12px var(--sans); fill: #8a97aa; }
.grafico__punto { fill: var(--verde); opacity: 0; animation: aparecer .4s 2.8s forwards; }
.grafico__halo { fill: var(--verde); opacity: 0; transform-origin: center; transform-box: fill-box; animation: latido 2.4s 3s ease-out infinite; }
.grafico__etiqueta { position: absolute; left: 4%; top: 0; background: var(--tinta); color: #fff; padding: 12px 16px; border-radius: var(--radio-sm); font-size: .85rem; line-height: 1.35; opacity: 0; animation: aparecer .6s 3s forwards; }
.grafico__etiqueta strong { display: block; font-family: var(--serif); font-weight: 400; font-size: 1.45rem; color: #7fe0a6; }
@keyframes dibujar { to { stroke-dashoffset: 0; } }
@keyframes aparecer { to { opacity: 1; } }
@keyframes latido { 0% { opacity: .45; transform: scale(1); } 100% { opacity: 0; transform: scale(3.2); } }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .grafico__linea { animation: none; stroke-dashoffset: 0; }
  .grafico__area, .grafico__punto, .grafico__etiqueta { animation: none; opacity: 1; }
  .grafico__halo { animation: none; }
  .cinta__pista { animation: none !important; }
}

/* ---------- Cinta tipo bolsa ---------- */
.cinta { background: var(--tinta); color: #fff; overflow: hidden; margin-top: clamp(40px, 6vw, 72px); border-top: 3px solid var(--verde); }
.cinta__pista { display: flex; width: max-content; animation: deslizar 38s linear infinite; }
.cinta:hover .cinta__pista { animation-play-state: paused; }
.cinta__grupo { display: flex; flex: none; }
.cinta__item { display: flex; align-items: center; gap: 10px; padding: 16px 28px; white-space: nowrap; font-weight: 500; font-size: .98rem; border-right: 1px solid rgba(255,255,255,.12); }
.cinta__item b { color: #7fe0a6; font-weight: 600; font-size: .8rem; }
@keyframes deslizar { to { transform: translateX(-50%); } }

/* ---------- Problemas ---------- */
.cabeza-seccion { max-width: 720px; margin-bottom: 48px; }
.problemas { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-top: 1px solid var(--linea); }
.problema { padding: 32px 32px 8px 0; }
.problema + .problema { padding-left: 32px; border-left: 1px solid var(--linea); }
.problema h3 { font-size: 1.45rem; }
.problema p { color: var(--tinta-suave); }
.remate { margin-top: 40px; font-family: var(--serif); font-size: clamp(1.5rem, 3vw, 2rem); line-height: 1.25; max-width: 30em; }

/* ---------- Qué aprenderás ---------- */
.aprender { display: grid; grid-template-columns: 1fr 1.25fr; gap: 64px; align-items: start; }
.lista-check { list-style: none; margin: 0; padding: 0; }
.lista-check li { position: relative; padding: 22px 0 22px 52px; border-bottom: 1px solid var(--linea); }
.lista-check li:first-child { border-top: 1px solid var(--linea); }
.lista-check li::before {
  content: ""; position: absolute; left: 0; top: 22px; width: 32px; height: 32px; border-radius: 50%;
  background: var(--verde-claro) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2316804a' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='4 15 9 10 13 14 20 7'/%3E%3Cpolyline points='15 7 20 7 20 12'/%3E%3C/svg%3E") center / 18px no-repeat;
}
.lista-check strong { display: block; font-size: 1.1rem; margin-bottom: 4px; }
.lista-check span { color: var(--tinta-suave); }

/* ---------- Historia ---------- */
.historia { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.foto { border-radius: var(--radio); overflow: hidden; }
.foto img { width: 100%; }
.cita { font-family: var(--serif); font-size: clamp(1.7rem, 3.4vw, 2.4rem); line-height: 1.2; margin: 0 0 24px; padding-left: 24px; border-left: 3px solid var(--oro); }

/* ---------- Cartera ---------- */
.cartera { display: grid; grid-template-columns: 1.1fr 1fr; gap: 64px; align-items: center; }
.captura { background: #fff; border-radius: var(--radio); padding: 20px; box-shadow: 0 30px 60px -30px rgba(0,0,0,.5); max-width: 520px; }
.captura img { border-radius: var(--radio-sm); }
.nota-legal { font-size: .85rem; color: #93a1b5; margin-top: 20px; max-width: 34em; }
.seccion--marmol .nota-legal, .pagina .nota-legal { color: var(--tinta-suave); }

/* ---------- Formación ---------- */
.titulos { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.titulo { border: 1px solid var(--linea); border-radius: var(--radio); padding: 32px; background: #fff; position: relative; }
.titulo__emisor { font-size: .92rem; font-weight: 600; color: var(--oro); margin-bottom: 14px; }
.titulo h3 { margin-bottom: 10px; }
.titulo p { color: var(--tinta-suave); margin: 0; font-size: .98rem; }

/* ---------- Mentorías ---------- */
.planes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; align-items: stretch; }
.plan { display: flex; flex-direction: column; border: 1px solid var(--linea); border-radius: var(--radio); padding: 32px; background: #fff; }
.plan--destacado { border: 2px solid var(--verde); }
.plan__aviso { align-self: flex-start; background: var(--verde-claro); color: var(--verde); font-weight: 600; font-size: .82rem; padding: 6px 12px; border-radius: 999px; margin-bottom: 18px; }
.plan h3 { margin-bottom: 6px; }
.plan__formato { color: var(--tinta-suave); font-weight: 500; margin-bottom: 20px; }
.plan ul { list-style: none; padding: 0; margin: 0 0 28px; flex: 1; }
.plan li { padding: 9px 0 9px 28px; position: relative; border-top: 1px solid var(--marmol); font-size: .98rem; }
.plan li::before { content: ""; position: absolute; left: 2px; top: 17px; width: 12px; height: 7px; border-left: 2.4px solid var(--verde); border-bottom: 2.4px solid var(--verde); transform: rotate(-45deg); }
.plan .boton { width: 100%; }
.modalidades { display: flex; flex-wrap: wrap; gap: 12px 32px; margin-top: 32px; color: var(--tinta-suave); }
.modalidades div { display: flex; align-items: center; gap: 10px; }
.modalidades svg { color: var(--verde); flex: none; }

/* ---------- Preguntas frecuentes ---------- */
.faq { max-width: 820px; }
.faq details { border-bottom: 1px solid var(--linea); }
.faq details:first-of-type { border-top: 1px solid var(--linea); }
.faq summary { list-style: none; cursor: pointer; padding: 24px 48px 24px 0; font-weight: 600; font-size: 1.12rem; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: ""; position: absolute; right: 8px; top: 50%; width: 12px; height: 12px; border-right: 2px solid var(--tinta); border-bottom: 2px solid var(--tinta); transform: translateY(-70%) rotate(45deg); transition: transform .25s; }
.faq details[open] summary::after { transform: translateY(-30%) rotate(-135deg); }
.faq summary:hover { color: var(--verde); }
.faq .respuesta { padding: 0 0 24px; color: var(--tinta-suave); max-width: 44em; }
.faq .respuesta p:last-child { margin: 0; }

/* ---------- Llamada final ---------- */
.llamada { text-align: center; }
.llamada h2 { max-width: 16em; margin-inline: auto; }
.llamada .texto-grande { margin-inline: auto; }
.llamada .botones { justify-content: center; }

/* ---------- Páginas interiores ---------- */
.cabeza-pagina { padding: clamp(56px, 8vw, 96px) 0 clamp(40px, 6vw, 64px); background: var(--marmol); border-bottom: 1px solid var(--linea); }
.cabeza-pagina h1 { font-size: clamp(2.4rem, 5vw, 3.8rem); }
.prosa { max-width: 720px; }
.prosa h2 { font-size: clamp(1.7rem, 3vw, 2.2rem); margin-top: 1.6em; }
.prosa h3 { margin-top: 1.4em; }
.prosa ul { padding-left: 1.2em; }
.prosa li { margin-bottom: .5em; }
.dos-columnas { display: grid; grid-template-columns: 1.3fr 1fr; gap: 64px; align-items: start; }
.columna-fija { position: sticky; top: 108px; }
.intereses { display: flex; flex-wrap: wrap; gap: 10px; list-style: none; padding: 0; margin: 0; }
.intereses li { border: 1px solid var(--linea); border-radius: 999px; padding: 8px 16px; font-weight: 500; font-size: .95rem; background: #fff; }
.aviso-pendiente { background: #fff7e6; border: 1px solid #f0d49a; border-radius: var(--radio-sm); padding: 16px 20px; margin-bottom: 32px; font-size: .95rem; }

/* ---------- Contacto ---------- */
.contacto { display: grid; grid-template-columns: 1fr 1.2fr; gap: 64px; align-items: start; }
.canales { list-style: none; padding: 0; margin: 28px 0 0; }
.canales li { border-top: 1px solid var(--linea); }
.canales li:last-child { border-bottom: 1px solid var(--linea); }
.canales a { display: flex; align-items: center; gap: 14px; padding: 18px 0; text-decoration: none; font-weight: 500; word-break: break-word; }
.canales a:hover { color: var(--verde); }
.canales svg { flex: none; color: var(--verde); }
.formulario { background: var(--marmol); border-radius: var(--radio); padding: clamp(24px, 4vw, 40px); }
.campo { margin-bottom: 20px; }
.campo label { display: block; font-weight: 600; font-size: .95rem; margin-bottom: 8px; }
.campo input, .campo select, .campo textarea {
  width: 100%; font: inherit; font-size: 1rem; color: var(--tinta);
  padding: 14px 16px; border: 1.5px solid var(--linea); border-radius: var(--radio-sm); background: #fff;
}
.campo input:focus, .campo select:focus, .campo textarea:focus { outline: none; border-color: var(--verde); box-shadow: 0 0 0 3px var(--verde-claro); }
.campo textarea { min-height: 150px; resize: vertical; }
.casilla { display: flex; gap: 12px; align-items: flex-start; font-size: .92rem; color: var(--tinta-suave); margin-bottom: 24px; }
.casilla input { width: 20px; height: 20px; margin-top: 2px; accent-color: var(--verde); flex: none; }
.oculto { position: absolute; left: -9999px; }

/* ---------- Pie ---------- */
.pie { background: #0b1626; color: #c6d0de; padding: 72px 0 32px; font-size: .95rem; }
.pie__rejilla { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; }
.pie .marca__nombre { color: #fff; }
.pie h4 { color: #fff; font-size: .98rem; font-weight: 600; margin: 0 0 16px; }
.pie ul { list-style: none; padding: 0; margin: 0; }
.pie li { margin-bottom: 10px; }
.pie a { text-decoration: none; }
.pie a:hover { color: #fff; text-decoration: underline; }
.pie__lema { margin-top: 16px; max-width: 24em; }
.pie__base { margin-top: 56px; padding-top: 24px; border-top: 1px solid rgba(255,255,255,.12); display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px; font-size: .85rem; color: #93a1b5; }
.pie__base p { margin: 0; max-width: 60em; }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .portada__rejilla, .aprender, .historia, .cartera, .dos-columnas, .contacto { grid-template-columns: 1fr; gap: 40px; }
  .grafico { max-width: 560px; }
  .planes { grid-template-columns: 1fr; max-width: 520px; }
  .titulos { grid-template-columns: 1fr; }
  .problemas { grid-template-columns: 1fr; }
  .problema, .problema + .problema { padding: 28px 0 12px; border-left: 0; border-bottom: 1px solid var(--linea); }
  .columna-fija { position: static; }
  .pie__rejilla { grid-template-columns: 1fr 1fr; }
  .pie__rejilla > :first-child { grid-column: 1 / -1; }
}
@media (max-width: 520px) {
  body { font-size: 1rem; }
  .marca__nombre { font-size: 1.25rem; }
  .botones .boton { width: 100%; }
  .grafico__etiqueta { padding: 8px 12px; font-size: .78rem; }
  .grafico__etiqueta strong { font-size: 1.15rem; }
  .pie__rejilla { grid-template-columns: 1fr; }
}

/* Portada con la captura real de la cartera */
.portada { padding-bottom: clamp(56px, 8vw, 104px); }
.captura--portada { margin: 0; justify-self: end; width: 100%; max-width: 500px; box-shadow: 0 30px 60px -30px rgba(18,35,59,.45); border: 1px solid var(--linea); }
.captura--portada figcaption { margin-top: 12px; font-size: .85rem; color: var(--tinta-suave); text-align: center; }
.captura--portada figcaption a { color: var(--verde); }
.foto--cartera { max-width: 440px; justify-self: end; }
@media (max-width: 960px) { .captura--portada, .foto--cartera { justify-self: start; } }
.captura__titulo { margin: 0 0 14px; font-size: .95rem; font-weight: 500; line-height: 1.5; color: var(--tinta); }
.captura__titulo a { color: var(--verde); font-weight: 600; }