/* Tapomurvo — hoja de estilo común
   Estilo: "stitched-margins" — lino claro, grafito y azul */

:root {
  --bg: #f4f0e8;
  --bg-alt: #e7e1d5;
  --bg-dark: #20242a;
  --ink: #22201b;
  --muted: #776f62;
  --on-dark: #f4f0e8;
  --accent: #2c4668;
  --accent-2: #a06a2c;
  --serif: Georgia, 'Times New Roman', serif;
  --sans: system-ui, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --gap: 24px;
  --step: 80px;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.8;
  overflow-x: hidden;
}

h1, h2, h3 { font-family: var(--serif); font-weight: 400; color: var(--ink); }
h1 { font-size: 58px; line-height: 1.08; letter-spacing: -0.01em; margin: 0; }
h2 { font-size: 29px; line-height: 1.25; margin: 0 0 18px; }
h3 { font-size: 20px; line-height: 1.35; margin: 32px 0 10px; }

p { margin: 0 0 18px; max-width: 68ch; }
p:last-child { margin-bottom: 0; }

a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible,
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

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

/* ---------- puntada / stitch ---------- */

.stitch,
.stitch-l,
.stitch-r,
.stitch-lr,
.stitch-t,
.stitch-b {
  background-repeat: no-repeat;
}

.stitch {
  background-image:
    repeating-linear-gradient(90deg, var(--accent) 0 13px, rgba(0,0,0,0) 13px 24px),
    repeating-linear-gradient(90deg, var(--accent) 0 13px, rgba(0,0,0,0) 13px 24px),
    repeating-linear-gradient(0deg, var(--accent) 0 13px, rgba(0,0,0,0) 13px 24px),
    repeating-linear-gradient(0deg, var(--accent) 0 13px, rgba(0,0,0,0) 13px 24px);
  background-size: 100% 2px, 100% 2px, 2px 100%, 2px 100%;
  background-position: 0 0, 0 100%, 0 0, 100% 0;
}

.stitch-l {
  background-image: repeating-linear-gradient(0deg, var(--accent) 0 11px, rgba(0,0,0,0) 11px 20px);
  background-size: 2px 100%;
  background-position: 0 0;
  padding-left: 28px;
}

.stitch-r {
  background-image: repeating-linear-gradient(0deg, var(--accent) 0 11px, rgba(0,0,0,0) 11px 20px);
  background-size: 2px 100%;
  background-position: 100% 0;
  padding-right: 28px;
}

.stitch-lr {
  background-image:
    repeating-linear-gradient(0deg, var(--accent) 0 11px, rgba(0,0,0,0) 11px 20px),
    repeating-linear-gradient(0deg, var(--accent) 0 11px, rgba(0,0,0,0) 11px 20px);
  background-size: 2px 100%, 2px 100%;
  background-position: 0 0, 100% 0;
  padding: 0 28px;
}

.stitch-t {
  background-image: repeating-linear-gradient(90deg, var(--accent) 0 11px, rgba(0,0,0,0) 11px 20px);
  background-size: 100% 2px;
  background-position: 0 0;
  padding-top: 24px;
}

.stitch-b {
  background-image: repeating-linear-gradient(90deg, var(--accent) 0 11px, rgba(0,0,0,0) 11px 20px);
  background-size: 100% 2px;
  background-position: 0 100%;
  padding-bottom: 24px;
}

.on-dark .stitch,
.on-dark .stitch-l,
.on-dark .stitch-b { --accent: #5b7ba6; }

/* separadores */

.rule {
  height: 2px;
  margin: 26px 0;
  background-image: repeating-linear-gradient(90deg, var(--accent) 0 11px, rgba(0,0,0,0) 11px 20px);
  background-size: 100% 2px;
  background-repeat: no-repeat;
  border: 0;
}

.rule-double {
  height: 8px;
  border: 0;
  margin: 0;
  background-image:
    linear-gradient(var(--ink), var(--ink)),
    repeating-linear-gradient(90deg, var(--accent) 0 11px, rgba(0,0,0,0) 11px 20px);
  background-size: 100% 1px, 100% 2px;
  background-position: 0 0, 0 6px;
  background-repeat: no-repeat;
}

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

.wrap {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 32px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  column-gap: var(--gap);
  row-gap: 0;
}

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

.site-head { padding: 22px 0 18px; }

.head-row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px 32px;
}

.brand {
  font-family: var(--serif);
  font-size: 22px;
  letter-spacing: 0.04em;
  text-decoration: none;
  color: var(--ink);
}
.brand span { color: var(--accent-2); }

.nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 26px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.nav a {
  font-size: 14px;
  letter-spacing: 0.03em;
  color: var(--ink);
  text-decoration: none;
  padding-bottom: 3px;
  background-image: repeating-linear-gradient(90deg, var(--accent) 0 6px, rgba(0,0,0,0) 6px 11px);
  background-size: 100% 2px;
  background-position: 0 100%;
  background-repeat: no-repeat;
}
.nav a:hover,
.nav a[aria-current="page"] {
  color: var(--accent);
  background-image: linear-gradient(var(--accent), var(--accent));
}

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

.hero { padding-top: 10px; }

.hero-frame {
  margin: 24px 0 0;
  padding: 44px 34px 38px;
}

.hero-grid { row-gap: 48px; }

.eyebrow {
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-2);
  margin: 0 0 16px;
}

.hero-title { grid-column: 1 / 9; }
.hero-title h1 { max-width: 15ch; }

.hero-intro {
  grid-column: 9 / 13;
  font-size: 16px;
  color: var(--muted);
}
.hero-intro p { max-width: none; }

.hero-index { grid-column: 1 / 6; align-self: end; }
.hero-index h2 { font-size: 15px; font-family: var(--sans); letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); margin-bottom: 14px; }
.hero-index ol { margin: 0; padding: 0; list-style: none; counter-reset: idx; font-size: 15px; line-height: 2.1; }
.hero-index li { counter-increment: idx; }
.hero-index li::before {
  content: counter(idx, decimal-leading-zero);
  color: var(--accent-2);
  font-size: 12px;
  letter-spacing: 0.1em;
  margin-right: 12px;
}

.hero-fig { grid-column: 7 / 13; margin: 0; }
.fig-plate { padding: 12px; }
.caption {
  font-size: 12px;
  line-height: 1.6;
  color: var(--muted);
  margin-top: 10px;
  max-width: 46ch;
}

/* ---------- secciones de texto ---------- */

main > section { margin-top: var(--step); }

.band { background: var(--bg-alt); padding: var(--step) 0; }
.band + section,
section + .band { margin-top: var(--step); }

.sec-head { margin-bottom: 30px; }
.sec-num {
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--accent-2);
  display: block;
  margin-bottom: 8px;
}

.col-left { grid-column: 1 / 8; }
.col-right { grid-column: 6 / 13; }
.col-narrow-left { grid-column: 1 / 6; }
.col-narrow-right { grid-column: 8 / 13; }
.col-wide { grid-column: 1 / 10; }

.pair { row-gap: 40px; }

/* listas */

ul.check, ul.plain {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  max-width: 62ch;
}
ul.check li, ul.plain li {
  position: relative;
  padding-left: 26px;
  margin-bottom: 10px;
}
ul.check li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 13px;
  width: 12px;
  height: 2px;
  background: var(--accent);
}
ul.plain li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 12px;
  width: 6px;
  height: 6px;
  border: 2px solid var(--accent-2);
}

ol.steps {
  counter-reset: st;
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  max-width: 62ch;
}
ol.steps li {
  counter-increment: st;
  position: relative;
  padding-left: 42px;
  margin-bottom: 14px;
}
ol.steps li::before {
  content: counter(st, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--accent-2);
}

.note {
  font-size: 15px;
  color: var(--muted);
  padding: 22px 0 0;
  margin-top: 26px;
}

/* ---------- sección oscura ---------- */

.section-dark {
  background: var(--bg-dark);
  color: var(--on-dark);
  padding: 72px 0;
}
.section-dark h2, .section-dark h3 { color: var(--on-dark); }
.section-dark .caption { color: #b3ab9d; }
.section-dark .sec-num { color: #c08e4e; }
.section-dark a { color: #9db9dc; }

.dark-fig { grid-column: 1 / 6; margin: 0; }
.dark-text { grid-column: 7 / 13; align-self: center; }

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

.contact-box { padding: 34px 32px; }
.contact-box p { max-width: 60ch; }
.mail { font-family: var(--serif); font-size: 21px; }

/* ---------- páginas interiores ---------- */

.page-head { padding: 28px 0 0; }
.page-head h1 { font-size: 46px; max-width: 18ch; }
.page-lead { grid-column: 8 / 13; align-self: end; font-size: 16px; color: var(--muted); }
.page-lead p { max-width: none; }

.about-block { margin-bottom: 64px; }
.about-block:last-child { margin-bottom: 0; }
.ab-1 { grid-column: 1 / 9; }
.ab-2 { grid-column: 6 / 12; }
.ab-3 { grid-column: 3 / 10; }

.legal-body { grid-column: 1 / 9; }
.legal-side { grid-column: 9 / 13; font-size: 14px; color: var(--muted); }
.legal-side p { max-width: none; }
.legal-body h2 { margin-top: 44px; font-size: 25px; }
.legal-body > h2:first-child { margin-top: 0; }

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

.site-foot {
  background: var(--bg-alt);
  margin-top: var(--step);
  padding: 0 0 40px;
}
.foot-top { padding-top: 40px; }
.foot-frame { margin-top: 40px; padding: 34px 28px; }
.foot-grid { row-gap: 28px; }
.foot-left { grid-column: 1 / 7; }
.foot-right { grid-column: 8 / 13; }
.foot-name { font-family: var(--serif); font-size: 21px; letter-spacing: 0.04em; margin-bottom: 8px; }
.foot-left p { font-size: 14px; color: var(--muted); max-width: 44ch; margin-bottom: 0; }
.foot-right ul { list-style: none; margin: 0 0 16px; padding: 0; font-size: 14px; line-height: 2; }
.foot-mail { font-size: 15px; }
.foot-bottom { font-size: 12px; color: var(--muted); margin-top: 26px; }

/* ---------- adaptable ---------- */

@media (max-width: 1000px) {
  h1 { font-size: 46px; }
  .hero-title { grid-column: 1 / 13; }
  .hero-intro { grid-column: 1 / 13; }
  .hero-intro.stitch-l { background-image: repeating-linear-gradient(90deg, var(--accent) 0 11px, rgba(0,0,0,0) 11px 20px); background-size: 100% 2px; background-position: 0 0; padding: 22px 0 0; }
  .hero-index { grid-column: 1 / 8; }
  .hero-fig { grid-column: 1 / 13; }
  .col-left, .col-right, .col-narrow-left, .col-narrow-right, .col-wide { grid-column: 1 / 13; }
  .dark-fig { grid-column: 1 / 8; }
  .dark-text { grid-column: 1 / 13; }
  .page-lead { grid-column: 1 / 13; margin-top: 24px; }
  .legal-body, .legal-side { grid-column: 1 / 13; }
  .legal-side { margin-top: 32px; }
  .ab-1, .ab-2, .ab-3 { grid-column: 1 / 13; }
  .foot-left, .foot-right { grid-column: 1 / 13; }
}

@media (max-width: 680px) {
  :root { --step: 48px; --gap: 16px; }
  body { font-size: 16px; line-height: 1.75; }
  h1 { font-size: 34px; }
  .page-head h1 { font-size: 30px; }
  h2 { font-size: 24px; }
  h3 { font-size: 18px; }
  .wrap { padding: 0 18px; }
  .hero-frame { margin-top: 16px; padding: 26px 18px 24px; }
  .hero-grid { row-gap: 32px; }
  .hero-title h1 { max-width: none; }
  .foot-frame { padding: 24px 18px; }
  .contact-box { padding: 24px 18px; }
  .stitch-lr { padding: 0 18px; }
  .stitch-l, .stitch-r { padding-left: 18px; padding-right: 0; }
  .stitch-r { background-position: 0 0; }
  .nav ul { gap: 6px 18px; }
}