/* Zendonda — hoja de estilos común
   Estructura tipo lomo de libro: banda cosida a la izquierda,
   rejilla de 12 columnas, ritmo de página de 76px. */

:root {
  --paper: #f7f3ea;
  --paper-alt: #eae4d8;
  --dark: #43221f;
  --ink: #241b16;
  --ink-soft: #786b5d;
  --bordo: #8a2c25;
  --gold: #8a6a24;
  --rule: rgba(36, 27, 22, 0.18);
  --rule-dark: rgba(247, 243, 234, 0.28);
  --rhythm: 76px;
  --serif: Georgia, 'Times New Roman', serif;
  --sans: system-ui, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 18px;
  line-height: 1.9;
  overflow-x: hidden;
}

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

a {
  color: var(--bordo);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-thickness: 1px;
}
a:hover { text-decoration-thickness: 2px; }

a:focus-visible,
:focus-visible {
  outline: 2px solid var(--bordo);
  outline-offset: 3px;
}

/* ---------- rejilla ---------- */

.wrap {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  column-gap: 24px;
}

.col-text { grid-column: 2 / span 6; }
.col-lede { grid-column: 2 / span 8; }
.col-wide { grid-column: 2 / span 10; }
.col-figure { grid-column: 7 / span 6; }

/* ---------- cabecera y navegación ---------- */

.site-head {
  border-bottom: 1px solid var(--rule);
  background: var(--paper);
}
.site-head .wrap {
  align-items: baseline;
  padding-top: 22px;
  padding-bottom: 22px;
  row-gap: 10px;
}
.brand {
  grid-column: 1 / span 4;
  font-family: var(--serif);
  font-size: 23px;
  letter-spacing: 0.04em;
  line-height: 1.3;
  color: var(--ink);
  text-decoration: none;
}
.brand:hover { color: var(--bordo); }

.site-nav { grid-column: 5 / span 8; }
.site-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px 22px;
  font-size: 15px;
}
.site-nav a {
  color: var(--ink-soft);
  text-decoration: none;
  padding-bottom: 3px;
  border-bottom: 1px solid transparent;
}
.site-nav a:hover { color: var(--bordo); border-bottom-color: var(--bordo); }
.site-nav a[aria-current='page'] { color: var(--ink); border-bottom-color: var(--gold); }

/* ---------- hero ---------- */

.hero { padding: calc(var(--rhythm) * 0.9) 0 var(--rhythm); }

.spine {
  grid-column: 1 / span 1;
  width: 20px;
  min-height: 210px;
  background: repeating-linear-gradient(
    to bottom,
    var(--bordo) 0 11px,
    transparent 11px 27px
  );
}

.hero-body { grid-column: 2 / span 9; }

h1 {
  font-family: var(--serif);
  font-weight: normal;
  font-size: 44px;
  line-height: 1.3;
  margin: 0 0 26px;
  max-width: 17ch;
}
h1 .l2 { display: block; }

.double-rule {
  border: 0;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
  height: 4px;
  width: 190px;
  margin: 0 0 28px;
}

.lede {
  font-size: 21px;
  line-height: 1.8;
  max-width: 62ch;
  margin: 0 0 20px;
}

.hero-note {
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
  max-width: 56ch;
  margin: 0;
}

/* ---------- secciones ---------- */

section { padding: var(--rhythm) 0; }
.band { background: var(--paper-alt); }

.running-head {
  grid-column: 1 / -1;
  font-size: 13px;
  letter-spacing: 0.09em;
  color: var(--gold);
  padding-bottom: 8px;
  margin-bottom: 34px;
  border-bottom: 1px solid var(--rule);
}

h2 {
  font-family: var(--serif);
  font-weight: normal;
  font-size: 31px;
  line-height: 1.3;
  margin: 0 0 22px;
  max-width: 20ch;
}
h3 {
  font-family: var(--serif);
  font-weight: normal;
  font-size: 21px;
  line-height: 1.3;
  margin: 40px 0 12px;
}
p { margin: 0 0 26px; max-width: 68ch; }
p:last-child { margin-bottom: 0; }

.intro-para { font-size: 20px; line-height: 1.85; }

ul.checklist, ol.steps {
  margin: 0 0 26px;
  padding-left: 0;
  list-style: none;
}
ul.checklist li {
  position: relative;
  padding-left: 26px;
  margin-bottom: 14px;
}
ul.checklist li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 16px;
  width: 12px;
  height: 2px;
  background: var(--bordo);
}
ol.steps { counter-reset: step; }
ol.steps li {
  position: relative;
  padding-left: 38px;
  margin-bottom: 16px;
  counter-increment: step;
}
ol.steps li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0;
  font-size: 14px;
  color: var(--gold);
}

dl.terms { margin: 0; max-width: 68ch; }
dl.terms dt {
  font-family: var(--serif);
  font-size: 19px;
  margin-top: 26px;
  color: var(--ink);
}
dl.terms dd { margin: 6px 0 0; }

/* ---------- separador ---------- */

.sep {
  grid-column: 1 / -1;
  display: flex;
  justify-content: center;
  gap: 10px;
  padding: 10px 0 0;
  border: 0;
}
.sep span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--gold);
}
.sep span:nth-child(2) { background: var(--bordo); }

/* ---------- figuras ---------- */

figure { margin: 0; }
figcaption {
  font-size: 14px;
  line-height: 1.65;
  color: var(--ink-soft);
  margin-top: 12px;
  max-width: 46ch;
}

.figure-main img { width: 100%; }

/* ---------- sección contrastada ---------- */

.dark {
  background: var(--dark);
  color: var(--paper);
}
.dark h2, .dark h3 { color: var(--paper); }
.dark .running-head { color: #cbab6a; border-bottom-color: var(--rule-dark); }
.dark p { color: rgba(247, 243, 234, 0.9); }
.dark figcaption { color: rgba(247, 243, 234, 0.66); }
.dark a { color: #e0b06a; }
.dark a:focus-visible { outline-color: #e0b06a; }
.dark ul.checklist li::before { background: #c08b52; }

.dark .figure-detail { grid-column: 2 / span 4; }
.dark .dark-text { grid-column: 7 / span 6; }

/* ---------- about ---------- */

.dropcap::first-letter {
  float: left;
  font-family: var(--serif);
  font-size: 68px;
  line-height: 0.82;
  padding: 8px 12px 0 0;
  color: var(--bordo);
}

/* ---------- contacto ---------- */

.contact-line {
  font-family: var(--serif);
  font-size: 22px;
  margin: 0 0 10px;
}

/* ---------- pie ---------- */

.site-foot {
  border-top: 1px solid var(--rule);
  padding: 54px 0 60px;
  text-align: center;
}
.site-foot .inner {
  max-width: 700px;
  margin: 0 auto;
  padding: 0 24px;
}
.foot-name {
  font-family: var(--serif);
  font-size: 22px;
  letter-spacing: 0.04em;
  margin: 0 0 18px;
}
.foot-nav ul {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  font-size: 15px;
}
.foot-nav li { padding: 0 14px; border-right: 1px solid var(--rule); }
.foot-nav li:last-child { border-right: 0; }
.foot-nav a { color: var(--ink-soft); text-decoration: none; }
.foot-nav a:hover { color: var(--bordo); text-decoration: underline; text-underline-offset: 4px; }
.foot-mail { margin: 0 0 12px; }
.foot-note {
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
  margin: 0;
  max-width: 60ch;
  margin-left: auto;
  margin-right: auto;
}

/* ---------- adaptación ---------- */

@media (max-width: 900px) {
  :root { --rhythm: 46px; }
  body { font-size: 17px; line-height: 1.85; }
  .wrap { grid-template-columns: 1fr; column-gap: 0; padding: 0 20px; }
  .col-text, .col-lede, .col-wide, .col-figure,
  .hero-body, .brand, .site-nav,
  .dark .figure-detail, .dark .dark-text { grid-column: 1 / -1; }
  .site-head .wrap { row-gap: 14px; }
  .site-nav ul { justify-content: flex-start; gap: 6px 18px; }
  .spine {
    grid-column: 1 / -1;
    width: 100%;
    min-height: 0;
    height: 14px;
    margin-bottom: 26px;
    background: repeating-linear-gradient(
      to right,
      var(--bordo) 0 11px,
      transparent 11px 27px
    );
  }
  h1 { font-size: 33px; max-width: none; }
  h2 { font-size: 26px; max-width: none; }
  .lede { font-size: 19px; }
  .intro-para { font-size: 18px; }
  .dark .figure-detail { margin-bottom: 28px; }
  .foot-nav li { padding: 0 10px; }
}

@media (max-width: 480px) {
  h1 { font-size: 29px; }
  .dropcap::first-letter { font-size: 54px; }
  .foot-nav ul { flex-direction: column; }
  .foot-nav li { border-right: 0; padding: 4px 0; }
}