/* ==========================================================================
   layout.css : disposición (flexbox y grid), espaciado y adaptación fluida.
   Sin saltos de tamaño (media queries): la adaptación se logra con flex-wrap,
   auto-fit/minmax, min() y clamp(), de modo que cada propiedad se declara una
   sola vez por selector y el validador CSS del W3C no emite avisos.
   ========================================================================== */

body {
    display: flex;
    flex-direction: column;
    min-height: 100dvh;
    margin: 0;
}

body::before {
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
}

ul,
ol {
    margin: 0;
    padding: 0;
    list-style: none;
}

h1,
h2,
h3,
p,
figure {
    margin: 0;
}

img {
    display: block;
    max-width: 100%;
    height: auto;
}

/* ---------- Enlace de salto ---------- */

body > a:first-child {
    position: absolute;
    top: 0;
    left: 1rem;
    z-index: 20;
    padding: 0.7rem 1.1rem;
    transform: translateY(-120%);
}

body > a:first-child:focus {
    transform: none;
}

/* ---------- Cabecera ---------- */

body > header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.8rem 1.2rem;
    padding: 0.9rem 5vw;
}

body > header > p {
    white-space: nowrap;
}

body > header > nav:first-of-type {
    flex: 1 1 auto;
}

body > header > nav:first-of-type ul {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.2rem;
}

body > header > nav:first-of-type a {
    display: block;
    padding: 0.4rem 0.55rem;
    white-space: nowrap;
}

body > header > form {
    display: flex;
    flex-direction: row;
    gap: 0.4rem;
}

body > header > form label {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    white-space: nowrap;
}

body > header input {
    width: 6.5rem;
    padding: 0.4rem 0.7rem;
}

body > header button {
    padding: 0.4rem 0.8rem;
    font-size: 0.9rem;
}

body > header > nav:last-of-type {
    display: flex;
}

body > header > nav:last-of-type a {
    padding: 0.35rem 0.7rem;
}

/* ---------- Migas ---------- */

body > nav {
    padding: 1.1rem 5vw 0;
}

body > nav ol {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

/* ---------- Contenido ---------- */

main {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    width: min(100% - 10vw, 90rem);
    margin: 0 auto;
    padding: 2.5rem 0 4.5rem;
}

main > h1 + p {
    max-width: 62ch;
}

section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 22rem), 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

section > h2,
section > p,
section > table,
section > figure {
    grid-column: 1 / -1;
}

/* Tarjetas de igual altura: la primera fila (título) se ajusta al contenido y
   el resto de filas comparten la altura de la tarjeta más alta. */
section:has(> article) {
    grid-template-rows: auto;
    grid-auto-rows: 1fr;
}

section:has(> h2 + p):has(> article) {
    grid-template-rows: auto auto;
}

/* Con 2 o 4 tarjetas, como máximo dos columnas (2 = 1+1, 4 = 2x2). */
section:has(> article:nth-of-type(2):last-of-type),
section:has(> article:nth-of-type(4):last-of-type) {
    grid-template-columns: repeat(auto-fit, minmax(min(100%, max(22rem, (100% - 1.5rem) / 2)), 1fr));
}

article {
    display: flex;
    flex-direction: column;
    gap: 0.9rem;
    padding: 1.6rem;
    position: relative;
    scroll-margin-top: 1rem;
}

article img {
    width: 100%;
    aspect-ratio: 16 / 9;
    max-height: 16rem;
}

article ul {
    padding-left: 1.2rem;
    list-style: disc;
}

article > ul {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

article > p:has(> time) {
    white-space: nowrap;
    padding-bottom: 0.9rem;
}

article code {
    display: inline-block;
    padding: 0.1rem 0.5rem;
    margin: 0.15rem 0.1rem 0.15rem 0;
}

article h3 a::before {
    content: "";
    position: absolute;
    inset: 0;
}

figure {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

video {
    display: block;
    width: 100%;
    max-width: 44rem;
    aspect-ratio: 16 / 9;
    height: auto;
}

audio {
    width: 100%;
    max-width: 44rem;
}

/* ---------- Tablas ---------- */

table {
    width: 100%;
    max-width: 44rem;
}

caption {
    padding: 0.7rem 1rem;
}

th,
td {
    padding: 0.8rem 1rem;
}

/* ---------- Portada: todo de un vistazo ---------- */

main:has(> section:first-child > figure) {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 30rem), 1fr));
    grid-template-rows: 1fr auto;
    align-items: stretch;
    gap: 1rem;
    padding-top: 0;
    padding-bottom: 1.25rem;
}

main:has(> section:first-child > figure) > section {
    margin-top: 0;
}

main > section:first-child {
    grid-template-columns: 1fr;
    align-content: center;
    justify-items: start;
    gap: 1rem;
}

main > section:first-child > h1 {
    font-size: clamp(2.2rem, 5vw, 3.6rem);
    line-height: 1;
}

main > section:first-child > p {
    max-width: 34rem;
}

main > section:first-child > nav {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
}

main > section:first-child > figure {
    padding: 0.6rem;
}

main > section:first-child > figure img {
    width: clamp(9rem, 16vw, 14rem);
    aspect-ratio: 1;
}

main:has(> section:first-child > figure) > section:nth-child(2) {
    align-content: center;
}

main:has(> section:first-child > figure) > section:nth-child(2) table {
    font-size: 0.9rem;
}

main:has(> section:first-child > figure) > section:nth-child(3) {
    grid-column: 1 / -1;
    gap: 1rem;
    align-content: start;
}

main:has(> section:first-child > figure) > section:nth-child(3) > h2 {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    white-space: nowrap;
}

main:has(> section:first-child > figure) article {
    padding: 1.1rem 1.4rem;
    gap: 0.6rem;
}

main section > nav a,
main > p:last-child > a {
    display: inline-block;
    padding: 0.75rem 1.4rem;
}

/* ---------- Aficiones: texto a la izquierda e imagen cuadrada a la derecha ---------- */

main:has(> figure) {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, max(22rem, (100% - 3rem) / 2)), 1fr));
    align-items: center;
    gap: 1.5rem 3rem;
}

main:has(> figure) > section {
    grid-column: 1 / -1;
}

main > header {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

main > header > h1 {
    font-size: clamp(2rem, 4.2vw, 3.4rem);
}

main > header > p {
    max-width: 75ch;
}

main > header > nav ul {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

main > header > nav a {
    display: inline-block;
    padding: 0.3rem 0.8rem;
}

main:has(> figure) > figure img {
    width: 100%;
    aspect-ratio: 1;
}

/* ---------- Contacto ---------- */

main:has(> section > form) {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 26rem), 1fr));
    align-items: start;
    gap: 1.5rem 3rem;
}

main:has(> section > form) > header dl {
    display: grid;
    gap: 0.9rem;
    margin: 0;
}

main:has(> section > form) > header dl > div {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    justify-content: space-between;
    gap: 0.4rem 1.5rem;
    padding: 1.1rem 1.4rem;
}

main:has(> section > form) > header dd {
    margin: 0;
}

main:has(> section > form) > section {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    margin-top: 0;
    padding: 2rem;
}

form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

form p {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

form input,
form textarea {
    box-sizing: border-box;
    width: 100%;
    padding: 0.7rem 0.9rem;
}

form button {
    align-self: flex-start;
    padding: 0.8rem 1.6rem;
}

/* ---------- Buscador de la página ---------- */

main > form {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: flex-end;
    max-width: 36rem;
}

main > form label {
    flex: 1 1 100%;
}

main > form input {
    flex: 1 1 12rem;
    width: auto;
}

main > form button {
    align-self: auto;
}

/* ---------- Mapa del sitio ---------- */

main > ul {
    display: grid;
    gap: 0.9rem;
    max-width: 46rem;
}

main > ul li {
    padding: 1rem 1.3rem;
}

/* ---------- Pie ---------- */

body > footer {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.6rem 2rem;
    padding: 1.6rem 5vw;
}

body > footer nav {
    flex: 1 1 100%;
}

body > footer ul {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem 1.5rem;
}

[hidden] {
    display: none;
}