/* Lubna · hoja de estilos de la web. Colores y reglas de marca: marca/README.md */

@font-face { font-family: "Outfit"; font-style: normal; font-weight: 400 800; font-display: swap;
  src: url("../fonts/outfit-latin.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: "Outfit"; font-style: normal; font-weight: 400 800; font-display: swap;
  src: url("../fonts/outfit-latin-ext.woff2") format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF; }
@font-face { font-family: "Fraunces"; font-style: italic; font-weight: 500; font-display: swap;
  src: url("../fonts/fraunces-italic-latin.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: "Fraunces"; font-style: italic; font-weight: 500; font-display: swap;
  src: url("../fonts/fraunces-italic-latin-ext.woff2") format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF; }

:root {
  --negro: #1D1A16;
  --marfil: #F4EEE2;
  --arena: #EAE1CF;
  --linea: #E2D9C7;
  --rojo: #C0392B;
  --rojo-claro: #E0533F;
  --rojo-texto: #9E2F23;
  --texto-2: #4A443B;
  --texto-3: #5E574C;
  --gris-claro: #CFC6B6;
  --azul: #1F3F5B;
  --azul-2: #2A5275;
  --azul-texto: #D6E0EA;
  --oro: #D9A84E;
  --pergamino: #CDBF9F;
  --radio: 12px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body { margin: 0; background: var(--marfil); color: var(--negro); font-family: "Outfit", system-ui, sans-serif; font-size: 17px; line-height: 1.5; -webkit-font-smoothing: antialiased; }
img, svg { display: block; max-width: 100%; }
a { color: var(--negro); }
a:hover { color: var(--rojo); }
:focus-visible { outline: 3px solid var(--rojo); outline-offset: 3px; }
h1, h2, h3 { margin: 0; letter-spacing: -0.02em; }
p { margin: 0; }

.contenedor { max-width: 1200px; margin: 0 auto; padding-inline: 24px; }
.solo-lectores { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.saltar { position: absolute; left: -9999px; }
.saltar:focus { left: 16px; top: 16px; z-index: 10; background: var(--negro); color: var(--marfil); padding: 10px 14px; border-radius: 8px; }

/* Botones y formularios */
.boton { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 20px; border: 0; border-radius: var(--radio); font: inherit; font-weight: 600; text-decoration: none; cursor: pointer; }
.boton--negro { background: var(--negro); color: var(--marfil); }
.boton--negro:hover { background: #3A352E; color: var(--marfil); }
.boton--rojo { background: var(--rojo); color: #FFFFFF; }
.boton--rojo:hover { background: #A93224; color: #FFFFFF; }
.boton--oro { background: var(--oro); color: var(--negro); font-weight: 700; }
.boton--oro:hover { background: #E4B962; color: var(--negro); }
.boton--rojo-claro { background: var(--rojo-claro); color: var(--negro); font-weight: 700; }
.formulario { display: flex; flex-wrap: wrap; gap: 10px; }
.formulario input { flex: 1 1 240px; min-width: 0; height: 52px; padding: 0 16px; border: 2px solid var(--negro); border-radius: var(--radio); background: #FFFFFF; font: inherit; color: var(--negro); }
.formulario .boton { height: 52px; }
.casilla { flex-basis: 100%; display: flex; align-items: center; gap: 10px; font-size: 15px; cursor: pointer; }
.casilla input { width: 20px; height: 20px; flex: none; accent-color: var(--rojo); }
.avisame .casilla { justify-content: center; color: var(--gris-claro); }
.avisame .casilla a { color: var(--marfil); }
.trampa { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.etiqueta { display: flex; align-items: center; gap: 10px; font-size: 14px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--rojo-texto); }
.rombo { width: 12px; height: 12px; flex: none; }

/* Navegación */
.cabecera { border-bottom: 1px solid var(--linea); }
.nav { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px; padding-block: 18px; }
.nav__enlaces { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 28px; font-weight: 500; }
.nav__enlaces a:not(.boton) { text-decoration: none; }

/* Portada */
.portada { display: flex; flex-wrap: wrap; align-items: center; gap: 56px; padding-block: 72px 88px; }
.portada__texto { flex: 1 1 480px; min-width: 0; display: flex; flex-direction: column; gap: 24px; }
.portada h1 { font-size: clamp(40px, 6vw, 72px); line-height: 1.02; font-weight: 800; letter-spacing: -0.03em; }
.portada__entradilla { font-size: 20px; line-height: 1.55; color: var(--texto-2); max-width: 34em; }
.portada__nota { font-size: 14px; color: var(--texto-3); }
.portada__demo { flex: 1 1 380px; min-width: 0; display: flex; justify-content: center; }

/* Partida de ejemplo */
.demo { width: 100%; max-width: 400px; background: #FFFFFF; border: 2px solid var(--negro); border-radius: 28px; box-shadow: 10px 10px 0 var(--negro); padding: 26px 24px 24px; display: flex; flex-direction: column; gap: 14px; }
.demo__cabecera { display: flex; align-items: center; justify-content: space-between; }
.demo__juego { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 20px; color: var(--azul); }
.demo__reto { font-size: 13px; font-weight: 600; color: var(--azul); background: #E4ECF3; padding: 6px 10px; border-radius: 999px; }
.demo__criterio { font-size: 15px; color: var(--texto-2); }
.demo__lista { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.ficha { height: 58px; border-radius: 14px; border: 2px solid var(--azul); background: #F7F3EA; padding: 0 16px; display: flex; align-items: center; justify-content: space-between; font-weight: 600; font-size: 17px; }
.ficha::after { content: "⋮⋮"; color: #8B8478; letter-spacing: -2px; }
.ficha--arrastrada { background: var(--oro); transform: rotate(-3deg) translateX(14px); box-shadow: 0 10px 0 rgba(31, 63, 91, 0.18); }
.ficha--arrastrada::after { color: var(--azul); }
@media (prefers-reduced-motion: no-preference) {
  .ficha--arrastrada { animation: arrastre 3.2s ease-in-out infinite; }
  @keyframes arrastre { 0%, 100% { transform: rotate(-3deg) translateX(14px); } 50% { transform: rotate(-1deg) translate(8px, -4px); } }
}
.demo__resolver { height: 52px; margin-top: 6px; border-radius: 14px; background: var(--azul); color: #FFFFFF; display: flex; align-items: center; justify-content: center; font-weight: 600; }

/* Principios */
.principios { background: var(--negro); color: var(--marfil); }
.principios__rejilla { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 40px; padding-block: 64px; }
.principio { display: flex; flex-direction: column; gap: 12px; }
.principio h2 { font-size: 26px; font-weight: 700; letter-spacing: -0.01em; }
.principio p { line-height: 1.6; color: var(--gris-claro); }

/* Listaku */
.listaku { background: var(--azul); color: var(--marfil); }
.listaku__fila { display: flex; flex-wrap: wrap; gap: 56px; align-items: flex-start; padding-block: 88px; }
.listaku__texto { flex: 1 1 440px; min-width: 0; display: flex; flex-direction: column; gap: 22px; }
.listaku__marca { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; font-size: 30px; font-weight: 700; }
.insignia { font-size: 13px; font-weight: 600; color: var(--azul); background: var(--oro); padding: 6px 10px; border-radius: 999px; }
.listaku h2 { font-size: clamp(36px, 5vw, 56px); line-height: 1.05; font-weight: 800; }
.listaku__entradilla { font-size: 19px; line-height: 1.6; color: var(--azul-texto); max-width: 32em; }
.pasos { margin: 8px 0 0; padding: 0; list-style: none; display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 14px; counter-reset: paso; }
.pasos li { background: var(--azul-2); border-radius: 16px; padding: 18px; font-weight: 600; counter-increment: paso; display: flex; flex-direction: column; gap: 6px; }
.pasos li::before { content: counter(paso); font-weight: 800; font-size: 28px; color: var(--oro); }
.listaku__tarjetas { flex: 1 1 400px; min-width: 0; display: flex; flex-direction: column; gap: 14px; }
.tarjeta { background: var(--marfil); color: var(--negro); border-radius: 20px; padding: 24px; display: flex; flex-direction: column; gap: 8px; }
.tarjeta h3 { font-size: 21px; font-weight: 700; letter-spacing: -0.01em; }
.tarjeta p { font-size: 16px; line-height: 1.6; color: var(--texto-2); }
.listaku__tarjetas .boton { align-self: flex-start; margin-top: 6px; }

/* Biblioteca */
.biblioteca { display: flex; flex-wrap: wrap; gap: 56px; align-items: center; padding-block: 96px; }
.biblioteca__texto { flex: 1 1 420px; min-width: 0; display: flex; flex-direction: column; gap: 20px; }
.titular { font-size: clamp(34px, 4.5vw, 52px); line-height: 1.05; font-weight: 800; }
.texto-grande { font-size: 19px; line-height: 1.6; color: var(--texto-2); }
.lista-rombos { margin: 4px 0 0; padding: 0; list-style: none; display: flex; flex-direction: column; gap: 12px; }
.lista-rombos li { display: flex; gap: 12px; align-items: baseline; }
.lista-rombos .rombo { transform: translateY(1px); }
.lista-rombos small { font-size: 14px; color: var(--texto-3); }
.estanteria { flex: 1 1 420px; min-width: 0; display: flex; flex-direction: column; align-items: center; }
.estanteria__libros { display: flex; align-items: flex-end; gap: 6px; padding: 0 20px; }
.lomo { border-radius: 6px; display: flex; align-items: center; justify-content: center; }
.lomo span { writing-mode: vertical-rl; transform: rotate(180deg); font-weight: 600; }
.lomo--listaku { width: 86px; height: 300px; background: var(--azul); color: var(--marfil); flex-direction: column; justify-content: space-between; padding: 18px 0; }
.lomo--listaku::before, .lomo--listaku::after { content: ""; width: 100%; height: 5px; background: var(--oro); }
.lomo--listaku span { font-weight: 700; font-size: 26px; }
.lomo--taller { background: #E8DFCE; border: 2px dashed #B3A88F; color: var(--texto-3); font-size: 16px; }
.lomo--taller:nth-child(2) { width: 70px; height: 262px; }
.lomo--taller:nth-child(3) { width: 62px; height: 228px; }
.lomo--taller:nth-child(4) { width: 58px; height: 196px; transform: rotate(-12deg); transform-origin: bottom left; margin-left: 20px; }
.estanteria__balda { width: min(100%, 420px); height: 14px; border-radius: 4px; background: var(--negro); }

/* Por qué Lubna */
.lubna { background: var(--arena); }
.lubna__fila { display: flex; flex-wrap: wrap; gap: 56px; align-items: center; padding-block: 96px; }
.lubna__ficha { flex: 0 1 300px; min-width: 0; display: flex; justify-content: center; }
.lubna__texto { flex: 1 1 520px; min-width: 0; display: flex; flex-direction: column; gap: 20px; }
.lubna h2 { font-size: clamp(32px, 4vw, 46px); line-height: 1.08; font-weight: 800; }
.lubna__texto > p:not(.etiqueta) { font-size: 18px; line-height: 1.65; color: var(--texto-2); }
.cita { margin: 8px 0 0; display: flex; flex-direction: column; gap: 8px; }
.cita p { font-family: "Fraunces", Georgia, serif; font-style: italic; font-weight: 500; font-size: 26px; line-height: 1.35; }
.cita footer { font-size: 15px; color: var(--texto-3); }

/* Lista de espera */
.avisame { background: var(--negro); color: var(--marfil); }
.avisame__caja { max-width: 820px; margin: 0 auto; padding: 96px 24px; display: flex; flex-direction: column; align-items: center; gap: 22px; text-align: center; }
.avisame h2 { font-size: clamp(34px, 5vw, 54px); line-height: 1.05; font-weight: 800; }
.avisame__texto { font-size: 19px; line-height: 1.6; color: var(--gris-claro); }
.avisame .formulario { width: 100%; max-width: 560px; justify-content: center; }
.avisame .formulario input { border-color: var(--marfil); background: #2A2620; color: var(--marfil); }
.avisame .formulario input::placeholder { color: #A9A194; }
.avisame__legal { font-size: 14px; color: #A9A194; }
.avisame__legal a { color: var(--marfil); }
.aviso-form { min-height: 1.5em; font-size: 15px; }

/* Pie */
.pie { border-top: 1px solid var(--linea); }
.pie__fila { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 20px; padding-block: 40px; font-size: 15px; color: var(--texto-3); }
.pie__marca { display: flex; align-items: center; gap: 14px; }
.pie__enlaces { display: flex; flex-wrap: wrap; gap: 8px 24px; }

/* Páginas de texto (legales) */
.pagina { max-width: 760px; padding-block: 64px 96px; display: flex; flex-direction: column; gap: 18px; }
.pagina h1 { font-size: clamp(34px, 5vw, 48px); font-weight: 800; line-height: 1.1; }
.pagina h2 { font-size: 22px; font-weight: 700; margin-top: 16px; }
.pagina p, .pagina li { line-height: 1.65; color: var(--texto-2); }
.pendiente { background: #FBE3DF; border: 2px dashed var(--rojo); border-radius: var(--radio); padding: 14px 16px; color: var(--negro); }

@media (max-width: 640px) {
  .portada { padding-block: 48px 64px; gap: 40px; }
  .nav__enlaces { gap: 8px 18px; font-size: 15px; }
  .estanteria__libros { transform: scale(0.8); transform-origin: bottom center; }
}