/* =========================================================
   911pty.com — Preparacionismo Básico para Mortales
   Hoja de estilos única. Colores de la serie (deck y volantes).
   ========================================================= */

@font-face {
  font-family: "Inter";
  src: url("../fonts/inter-latin-wght-normal.woff2") format("woff2");
  font-weight: 100 900; font-style: normal; font-display: swap;
}
@font-face {
  font-family: "Inter";
  src: url("../fonts/inter-latin-wght-italic.woff2") format("woff2");
  font-weight: 100 900; font-style: italic; font-display: swap;
}
@font-face {
  font-family: "Oswald";
  src: url("../fonts/oswald-latin-wght-normal.woff2") format("woff2");
  font-weight: 200 700; font-style: normal; font-display: swap;
}

:root {
  --carbon: #15181C;
  --carbon-2: #1E2228;
  --naranja: #E07A2E;
  --naranja-osc: #B5541A;
  --naranja-texto: #9A4412;  /* naranja legible sobre fondos claros */
  --crema: #F2EFE8;
  --piedra: #E4E0D6;
  --gris: #5A5F66;
  --gris-claro: #A9ADB3;
  --blanco: #FFFFFF;
  --error: #A3261B;

  --f-titulo: "Oswald", "Arial Narrow", sans-serif;
  --f-texto: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;

  --ancho: 1120px;
  --gutter: clamp(16px, 4vw, 40px);
  --radio: 6px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  font-family: var(--f-texto);
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--carbon);
  background: var(--crema);
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
p { margin: 0 0 1em; }
h1, h2, h3 { font-family: var(--f-titulo); font-weight: 600; line-height: 1.1; margin: 0 0 .5em; letter-spacing: .005em; }
h2 { font-size: clamp(2rem, 5vw, 3.25rem); }
h3 { font-size: 1.35rem; }

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

.envoltura { max-width: var(--ancho); margin: 0 auto; padding: 0 var(--gutter); }
.seccion { padding: clamp(64px, 10vw, 120px) 0; }
.oscura { background: var(--carbon); color: var(--crema); }
.piedra { background: var(--piedra); }
.blanca { background: var(--blanco); }
.angosta { max-width: 68ch; }
.entrada { font-size: 1.2rem; line-height: 1.55; }
.visualmente-oculto { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ---------- Botones ---------- */
.boton {
  display: inline-flex; align-items: center; justify-content: center; gap: .5em;
  font: 600 1.05rem/1.2 var(--f-texto);
  padding: .95em 1.4em; min-height: 48px;
  border-radius: var(--radio); border: 2px solid transparent;
  text-decoration: none; cursor: pointer; text-align: center;
  transition: background-color .15s, color .15s, border-color .15s;
}
.boton-principal { background: var(--naranja); color: var(--carbon); }
.boton-principal:hover { background: #EB8C43; }
.boton-borde { background: transparent; border-color: currentColor; }
.oscura .boton-borde { color: var(--crema); }
.oscura .boton-borde:hover { background: rgba(242, 239, 232, .08); }
.boton-oscuro { background: var(--carbon); color: var(--crema); }
.boton-oscuro:hover { background: #2A2F36; }
.botones { display: flex; flex-wrap: wrap; gap: 12px; }

/* ---------- Franja temporal (radio) ---------- */
.franja {
  background: var(--naranja); color: var(--carbon);
  font-size: .95rem; line-height: 1.4;
}
.franja .envoltura { display: flex; align-items: center; gap: 12px; padding-top: 10px; padding-bottom: 10px; }
.franja p { margin: 0; flex: 1; }
.franja button { background: none; border: 0; font: inherit; font-size: 1.4rem; line-height: 1; cursor: pointer; color: inherit; padding: 4px 8px; }
.franja[hidden] { display: none; }

/* ---------- Encabezado ---------- */
.cabecera {
  position: sticky; top: 0; z-index: 40;
  background: rgba(21, 24, 28, .96); color: var(--crema);
  border-bottom: 1px solid rgba(242, 239, 232, .08);
}
.cabecera .envoltura { display: flex; align-items: center; justify-content: space-between; gap: 16px; height: 64px; }
.marca { font-family: var(--f-titulo); font-weight: 600; font-size: 1.15rem; text-decoration: none; line-height: 1.05; }
.marca small { display: block; font-family: var(--f-texto); font-weight: 400; font-size: .72rem; color: var(--gris-claro); letter-spacing: .02em; }
.menu { display: flex; align-items: center; gap: 22px; }
.menu a { text-decoration: none; font-size: .95rem; color: var(--crema); opacity: .85; }
.menu a:hover { opacity: 1; text-decoration: underline; text-underline-offset: 4px; }
.cabecera .boton { padding: .55em 1em; min-height: 40px; font-size: .95rem; }
.menu-boton { display: none; background: none; border: 0; color: var(--crema); font: 500 .95rem var(--f-texto); cursor: pointer; padding: 10px 4px; }
@media (max-width: 900px) {
  .menu-boton { display: block; }
  .menu {
    display: none; position: absolute; left: 0; right: 0; top: 64px;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--carbon); padding: 8px var(--gutter) 20px;
    border-bottom: 1px solid rgba(242, 239, 232, .1);
  }
  .menu.abierto { display: flex; }
  .menu a { padding: 14px 0; border-bottom: 1px solid rgba(242, 239, 232, .08); font-size: 1.05rem; }
  .menu .boton { margin-top: 14px; }
}

/* ---------- Portada (hero) ---------- */
.portada {
  position: relative; overflow: hidden;
  background:
    radial-gradient(ellipse 60% 70% at 72% 55%, rgba(224, 122, 46, .22), transparent 70%),
    var(--carbon);
  color: var(--crema);
  padding: clamp(40px, 7vw, 96px) 0 clamp(56px, 8vw, 110px);
}
.portada .envoltura { display: grid; grid-template-columns: 1.1fr .9fr; align-items: center; gap: clamp(24px, 5vw, 64px); }
.portada h1 {
  font-size: clamp(2.7rem, 7.2vw, 5.4rem);
  font-weight: 600; line-height: 1.02;
  margin-bottom: .35em; text-wrap: balance;
}
.libro-nombre { font-family: var(--f-titulo); font-weight: 500; font-size: clamp(1.35rem, 2.6vw, 1.75rem); line-height: 1.2; margin: 0 0 .25em; color: var(--blanco); }
.libro-sub { font-size: 1.1rem; color: #D6D3CC; margin-bottom: 1.1em; max-width: 34ch; }
.lema { font-style: italic; font-weight: 500; font-size: 1.3rem; color: var(--naranja); margin-bottom: 1.6em; }
.aviso-remesa { margin: 18px 0 0; font-size: .98rem; color: #D6D3CC; }
.aviso-remesa strong { color: var(--crema); font-weight: 600; }
.firma-autor { margin-top: 26px; font-size: .9rem; color: var(--gris-claro); }

/* ---------- Libro 3D ---------- */
.escena-libro {
  --w: clamp(190px, 26vw, 300px);
  --h: calc(var(--w) * 1.5);
  --t: calc(var(--w) * 0.08858);  /* lomo 0,5315 in ÷ 6 in */
  perspective: 1400px;
  display: grid; justify-items: center; gap: 22px;
  user-select: none; -webkit-user-select: none;
}
.libro-3d-area { width: calc(var(--w) * 1.5); height: calc(var(--h) * 1.12); display: grid; place-items: center; touch-action: pan-y; cursor: grab; position: relative; }
.libro-3d-area:active { cursor: grabbing; }
.libro-3d-area::after { /* sombra en el piso */
  content: ""; position: absolute; bottom: 0; left: 50%; width: calc(var(--w) * 1.1); height: 26px;
  transform: translateX(-50%);
  background: radial-gradient(ellipse at center, rgba(0,0,0,.55), transparent 70%);
  pointer-events: none;
}
.libro-3d {
  position: relative; width: var(--w); height: var(--h);
  transform-style: preserve-3d;
  transform: rotateX(4deg) rotateY(var(--giro, -28deg));
}
.cara { position: absolute; top: 0; left: 0; height: var(--h); backface-visibility: hidden; -webkit-backface-visibility: hidden; }
.cara img { width: 100%; height: 100%; object-fit: cover; pointer-events: none; }
.cara-frente { width: var(--w); transform: translateZ(calc(var(--t) / 2)); box-shadow: inset 4px 0 6px -3px rgba(0,0,0,.5); }
.cara-contra { width: var(--w); transform: rotateY(180deg) translateZ(calc(var(--t) / 2)); }
.cara-lomo { width: var(--t); left: calc((var(--w) - var(--t)) / 2); transform: rotateY(-90deg) translateZ(calc(var(--w) / 2)); }
.cara-hojas {
  width: var(--t); left: calc((var(--w) - var(--t)) / 2);
  transform: rotateY(90deg) translateZ(calc(var(--w) / 2 - 2px));
  background: repeating-linear-gradient(90deg, #F7F4EC 0 1px, #E3DED2 1px 2px);
}
.cara-arriba, .cara-abajo {
  width: var(--w); height: var(--t);
  background: repeating-linear-gradient(0deg, #F7F4EC 0 1px, #E3DED2 1px 2px);
}
.cara-arriba { top: calc(var(--t) / -2); transform: rotateX(90deg); }
.cara-abajo  { top: calc(var(--h) - var(--t) / 2); transform: rotateX(-90deg); }

.libro-controles { display: flex; gap: 8px; flex-wrap: wrap; justify-content: center; }
.libro-controles button {
  background: transparent; color: var(--crema); border: 1px solid rgba(242,239,232,.35);
  border-radius: 999px; padding: 7px 14px; font: 500 .85rem var(--f-texto); cursor: pointer; min-height: 36px;
}
.libro-controles button:hover, .libro-controles button[aria-pressed="true"] { background: var(--crema); color: var(--carbon); }

@media (max-width: 820px) {
  .portada .envoltura { grid-template-columns: 1fr; }
  .portada .escena-libro { order: -1; --w: min(44vw, 190px); }
  .portada .texto-portada { text-align: left; }
}

/* ---------- Preguntas ---------- */
.preguntas-lista { list-style: none; margin: clamp(32px, 5vw, 56px) 0 0; padding: 0; display: grid; gap: 0; }
.pregunta {
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(200px, 300px); gap: 12px 40px; align-items: baseline;
  padding: 28px 0; border-top: 1px solid rgba(21,24,28,.18);
}
.pregunta:last-child { border-bottom: 1px solid rgba(21,24,28,.18); }
.pregunta p.q { font-family: var(--f-titulo); font-weight: 500; font-size: clamp(1.35rem, 2.8vw, 1.95rem); line-height: 1.25; margin: 0; text-wrap: pretty; }
.pregunta .cap { margin: 0; font-size: .95rem; color: var(--gris); }
.pregunta .cap strong { color: var(--carbon); font-weight: 600; }
.pregunta.destacada p.q { font-size: clamp(1.6rem, 3.6vw, 2.5rem); }
@media (max-width: 720px) { .pregunta { grid-template-columns: 1fr; } }

/* ---------- El libro (resumen) ---------- */
.resumen { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 6vw, 80px); align-items: center; }
.resumen figure { margin: 0; }
.resumen figure img { border-radius: var(--radio); width: 100%; aspect-ratio: 16 / 10; object-fit: cover; }
.resumen figcaption { font-size: .88rem; color: var(--gris); margin-top: 10px; }
.remate { font-family: var(--f-titulo); font-weight: 500; font-size: 1.6rem; line-height: 1.2; color: var(--naranja-texto); margin-top: 1.2em; }
@media (max-width: 860px) { .resumen { grid-template-columns: 1fr; } }

/* ---------- Herramientas ---------- */
.herramientas { list-style: none; padding: 0; margin: clamp(32px, 5vw, 56px) 0 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 320px), 1fr)); gap: 0 48px; }
.herramientas li { display: grid; grid-template-columns: 64px 1fr; gap: 16px; padding: 22px 0; border-top: 1px solid rgba(21,24,28,.15); }
.herramientas .num { font-family: var(--f-titulo); font-size: 1.05rem; font-weight: 500; color: var(--naranja-texto); padding-top: 2px; }
.herramientas .num span { display: block; font-family: var(--f-texto); font-size: .72rem; color: var(--gris); font-weight: 400; }
.herramientas h3 { font-size: 1.25rem; margin: 0 0 .25em; }
.herramientas p { margin: 0; font-size: .98rem; color: #33373D; }
.cita-media { margin: clamp(40px, 6vw, 64px) 0 0; padding: 0 0 0 22px; border-left: 4px solid var(--naranja); font-size: 1.25rem; font-style: italic; max-width: 60ch; }

/* ---------- Índice ---------- */
.indice-libro { margin-top: 32px; }
.indice-libro details { border-top: 1px solid rgba(21,24,28,.18); border-bottom: 1px solid rgba(21,24,28,.18); }
.indice-libro summary { cursor: pointer; padding: 18px 0; font-weight: 600; font-size: 1.05rem; list-style: none; display: flex; justify-content: space-between; gap: 12px; }
.indice-libro summary::-webkit-details-marker { display: none; }
.indice-libro summary::after { content: "+"; font-size: 1.5rem; line-height: 1; color: var(--naranja-texto); }
.indice-libro details[open] summary::after { content: "–"; }
.indice-libro ol { list-style: none; margin: 0 0 24px; padding: 0; columns: 2 320px; column-gap: 48px; }
.indice-libro li { break-inside: avoid; padding: 10px 0; border-bottom: 1px dashed rgba(21,24,28,.15); display: grid; grid-template-columns: 7.5em 1fr; gap: 10px; font-size: .98rem; }
.indice-libro li .pieza { color: var(--gris); font-size: .9rem; }

/* ---------- Cita grande ---------- */
.cita-grande {
  position: relative; color: var(--crema); padding: clamp(80px, 12vw, 150px) 0;
  background: var(--carbon);
  isolation: isolate;
}
.cita-grande::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(90deg, rgba(21,24,28,.94) 0%, rgba(21,24,28,.82) 55%, rgba(21,24,28,.55) 100%), url("../img/amanecer.webp") center / cover no-repeat;
}
.cita-grande blockquote { margin: 0; max-width: 46ch; }
.cita-grande blockquote p { font-size: clamp(1.2rem, 2.2vw, 1.45rem); line-height: 1.55; margin: 0; }
.cita-grande blockquote p .fuerte { font-family: var(--f-titulo); font-size: clamp(1.7rem, 3.4vw, 2.4rem); font-weight: 500; line-height: 1.2; display: block; margin: .5em 0; color: var(--blanco); }
.cita-grande cite { display: block; margin-top: 22px; font-style: normal; font-size: .92rem; color: var(--gris-claro); }

/* ---------- Charla ---------- */
.charla { display: grid; grid-template-columns: 1.1fr .9fr; gap: clamp(32px, 6vw, 72px); align-items: start; }
.aprende { list-style: none; padding: 0; margin: 0 0 28px; }
.aprende li { padding: 14px 0 14px 34px; border-top: 1px solid rgba(21,24,28,.15); position: relative; }
.aprende li::before { content: ""; position: absolute; left: 4px; top: 22px; width: 14px; height: 8px; border-left: 3px solid var(--naranja-osc); border-bottom: 3px solid var(--naranja-osc); transform: rotate(-45deg); }
.condiciones { background: var(--carbon); color: var(--crema); border-radius: var(--radio); padding: 28px; }
.condiciones h3 { color: var(--blanco); }
.condiciones ul { margin: 0 0 24px; padding-left: 1.1em; }
.condiciones li { margin-bottom: .45em; }
.condiciones .boton { width: 100%; }
@media (max-width: 860px) { .charla { grid-template-columns: 1fr; } }

/* ---------- Acompañamiento ---------- */
.acomp-intro { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 5vw, 64px); align-items: center; }
.acomp-intro img { border-radius: var(--radio); aspect-ratio: 16 / 10; object-fit: cover; width: 100%; }
.modelos { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 40px; }
.modelo { border: 1px solid rgba(242,239,232,.18); border-radius: var(--radio); padding: 28px; }
.modelo .letra { font-family: var(--f-titulo); font-size: 2.4rem; font-weight: 500; color: var(--naranja); line-height: 1; margin-bottom: 10px; }
.modelo h3 { color: var(--blanco); }
.modelo p { color: #D6D3CC; }
.modelo .nota { font-size: .95rem; border-top: 1px solid rgba(242,239,232,.14); padding-top: 14px; margin-top: 14px; }
.pagado { margin: 32px 0 24px; font-size: .98rem; color: #D6D3CC; max-width: 68ch; }
@media (max-width: 860px) { .acomp-intro, .modelos { grid-template-columns: 1fr; } }

/* ---------- Franja de compra ---------- */
.compra { background: var(--carbon-2); color: var(--crema); padding: clamp(64px, 10vw, 120px) 0; }
.compra-rejilla { display: grid; grid-template-columns: .9fr 1.1fr; gap: clamp(32px, 5vw, 64px); align-items: center; }
.compra-rejilla img { border-radius: var(--radio); width: 100%; aspect-ratio: 16 / 10; object-fit: cover; }
.compra ul { padding-left: 1.1em; margin: 0 0 28px; color: #D6D3CC; }
.compra li { margin-bottom: .4em; }
@media (max-width: 860px) { .compra-rejilla { grid-template-columns: 1fr; } }

/* ---------- Autor ---------- */
.autor { display: grid; grid-template-columns: 300px 1fr; gap: clamp(28px, 5vw, 64px); align-items: start; }
.autor img { border-radius: var(--radio); width: 100%; max-width: 300px; }
.credenciales { list-style: none; padding: 0; margin: 0 0 24px; }
.credenciales li { padding: 10px 0; border-top: 1px solid rgba(21,24,28,.15); }
.bio details summary { cursor: pointer; font-weight: 600; color: var(--naranja-texto); padding: 8px 0; }
.bio details p { margin-top: 1em; }
.otros-libros { margin-top: 28px; font-size: .98rem; color: var(--gris); }
@media (max-width: 760px) { .autor { grid-template-columns: 1fr; } .autor img { max-width: 220px; } }

/* ---------- Contacto ---------- */
.contacto { display: grid; grid-template-columns: 1.2fr .8fr; gap: clamp(32px, 6vw, 72px); align-items: center; }
.canales { list-style: none; padding: 0; margin: 0 0 28px; }
.canales li { padding: 14px 0; border-top: 1px solid rgba(242,239,232,.14); }
.canales a { color: var(--crema); font-weight: 600; text-underline-offset: 4px; }
.canales span { display: block; font-size: .88rem; color: var(--gris-claro); }
.qr { background: var(--blanco); padding: 16px; border-radius: var(--radio); width: 220px; justify-self: center; text-align: center; color: var(--carbon); }
.qr img { width: 188px; height: 188px; }
.qr p { margin: 8px 0 0; font-size: .85rem; }
@media (max-width: 760px) { .contacto { grid-template-columns: 1fr; } .qr { display: none; } }

/* ---------- Pie ---------- */
.pie { background: #0F1114; color: var(--gris-claro); font-size: .9rem; padding: 40px 0 48px; }
.pie p { margin: 0 0 .7em; }
.pie a { color: var(--crema); }
.pie .aviso-911 { color: var(--crema); font-weight: 500; }

/* ---------- Agradecimiento sin JavaScript ---------- */
.gracias-sinjs { display: none; background: var(--naranja); color: var(--carbon); padding: 20px 0; font-weight: 600; }
.gracias-sinjs:target { display: block; }

/* ---------- Formulario (diálogo) ---------- */
dialog.ventana {
  width: min(640px, calc(100vw - 24px)); max-height: calc(100dvh - 24px);
  padding: 0; border: 0; border-radius: 10px;
  background: var(--crema); color: var(--carbon);
  box-shadow: 0 30px 80px rgba(0,0,0,.45);
}
dialog.ventana::backdrop { background: rgba(10, 12, 14, .72); }
.ventana-cabeza { position: sticky; top: 0; z-index: 2; background: var(--carbon); color: var(--crema); padding: 18px 22px; display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; }
.ventana-cabeza h2 { font-size: 1.55rem; margin: 0; }
.ventana-cabeza p { margin: 4px 0 0; font-size: .92rem; color: #D6D3CC; }
.cerrar { background: none; border: 0; color: var(--crema); font-size: 1.8rem; line-height: 1; cursor: pointer; padding: 2px 6px; }
.ventana form, .ventana .listo { padding: 22px; }
.campos { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 16px; }
.campo { display: grid; gap: 6px; }
.campo.ancho { grid-column: 1 / -1; }
.campo[hidden] { display: none; }
.campo label, .campo legend { font-size: .92rem; font-weight: 600; }
.campo .opcional { font-weight: 400; color: var(--gris); }
.campo input[type=text], .campo input[type=email], .campo input[type=tel], .campo input[type=number], .campo select, .campo textarea {
  font: 400 1rem/1.4 var(--f-texto); color: var(--carbon);
  background: var(--blanco); border: 1px solid #B9B4A8; border-radius: 5px;
  padding: 11px 12px; min-height: 46px; width: 100%;
}
.campo textarea { min-height: 96px; resize: vertical; }
.campo input:focus, .campo select:focus, .campo textarea:focus { outline: 3px solid rgba(224,122,46,.55); outline-offset: 0; border-color: var(--naranja-osc); }
.campo [aria-invalid="true"] { border-color: var(--error); background: #FFF6F5; }
.campo .err { color: var(--error); font-size: .86rem; min-height: 0; }
.campo fieldset { border: 0; padding: 0; margin: 0; display: grid; gap: 8px; }
.opcion { display: flex; gap: 10px; align-items: flex-start; font-size: .97rem; font-weight: 400; cursor: pointer; }
.opcion input { width: 20px; height: 20px; margin: 2px 0 0; accent-color: var(--naranja-osc); flex: none; }
.nota-form { font-size: .9rem; color: var(--gris); background: var(--piedra); border-radius: 5px; padding: 12px 14px; }
.consentimientos { margin-top: 18px; display: grid; gap: 12px; border-top: 1px solid rgba(21,24,28,.15); padding-top: 16px; }
.trampa { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.enviar-fila { margin-top: 20px; display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.enviar-fila .boton { flex: 1 1 220px; }
.estado { font-size: .95rem; }
.estado.error { color: var(--error); font-weight: 600; }
.listo h3 { font-size: 1.7rem; }
@media (max-width: 560px) { .campos { grid-template-columns: 1fr; } .ventana form, .ventana .listo { padding: 18px 16px; } }

/* ---------- Página de privacidad ---------- */
.legal { padding: clamp(40px, 7vw, 80px) 0; }
.legal h1 { font-size: clamp(2rem, 5vw, 3rem); }
.legal h2 { font-size: 1.5rem; margin-top: 1.6em; }
.legal .version { color: var(--gris); font-size: .95rem; }