/* Bordogora — hoja de estilos común */

:root {
  --paper: #f1f2f0;
  --paper-alt: #e3e5e2;
  --ink: #141614;
  --text: #171917;
  --muted: #6a6e6a;
  --on-dark: #f1f2f0;
  --green: #2a6b3c;
  --ochre: #8a6a20;
  --line: #c8cbc7;
  --line-dark: #3a3f3a;
  --gap: 0px;
  --rhythm: 72px;
  --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(--text);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.8;
  overflow-x: hidden;
}

.wrap {
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- rejilla de 12 columnas con celdas visibles ---------- */

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

.cell {
  border: 1px solid var(--line);
  padding: 26px 24px;
  min-width: 0;
}

.cell + .cell { border-left-width: 0; }
.cell--void { background: transparent; }

.c3 { grid-column: span 3; }
.c4 { grid-column: span 4; }
.c5 { grid-column: span 5; }
.c6 { grid-column: span 6; }
.c7 { grid-column: span 7; }
.c8 { grid-column: span 8; }
.c9 { grid-column: span 9; }
.c12 { grid-column: span 12; }

/* ---------- tipografía ---------- */

h1, h2, h3 {
  font-family: var(--serif);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.01em;
  margin: 0;
}

h1 {
  font-size: clamp(2.1rem, 5.4vw, 3.5rem);
  padding: 30px 0 34px;
  grid-column: span 9;
  min-width: 0;
}

h2 {
  font-size: clamp(1.5rem, 2.8vw, 1.95rem);
  margin-bottom: 18px;
}

h3 {
  font-size: 1.18rem;
  line-height: 1.25;
  margin: 26px 0 10px;
}

p { margin: 0 0 18px; }
p:last-child { margin-bottom: 0; }

.lead { font-size: 1.06rem; }

.caption {
  font-family: var(--sans);
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

.num {
  font-size: 13px;
  color: var(--ochre);
  letter-spacing: 0.06em;
  display: block;
  margin-bottom: 10px;
}

a {
  color: var(--green);
  text-decoration: underline;
  text-underline-offset: 3px;
}

a:hover { text-decoration-thickness: 2px; }

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

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

.weave {
  border: 0;
  height: 9px;
  margin: 0;
  position: relative;
  background: transparent;
}
.weave::before,
.weave::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
}
.weave::before { top: 0; border-top: 2px solid var(--green); }
.weave::after { top: 8px; border-top: 1px solid var(--ochre); }

.rule-thin { border: 0; border-top: 1px solid var(--line); margin: 0; }

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

.site-head {
  border-bottom: 1px solid var(--line);
  background: var(--paper);
}

.site-head .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px 28px;
  padding-top: 20px;
  padding-bottom: 18px;
}

.brand {
  font-family: var(--serif);
  font-size: 1.4rem;
  color: var(--text);
  text-decoration: none;
  letter-spacing: 0.01em;
}
.brand:hover { text-decoration: underline; }

.site-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 22px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 15px;
}

.site-nav a {
  color: var(--text);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
}
.site-nav a:hover { border-bottom-color: var(--green); }
.site-nav a[aria-current="page"] { border-bottom-color: var(--ochre); }

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

main { display: block; }

.band { padding: var(--rhythm) 0; }
.band--alt { background: var(--paper-alt); }
.band--tight { padding-top: 40px; }

.band--dark {
  background: var(--ink);
  color: var(--on-dark);
}
.band--dark h2,
.band--dark h3 { color: var(--on-dark); }
.band--dark .cell { border-color: var(--line-dark); }
.band--dark .caption { color: #a9ada9; }
.band--dark a { color: #8fc39d; }
.band--dark .weave::before { border-top-color: #8fc39d; }

.hero { padding-top: 34px; }

.hero-rules {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.hero-grid .cell { border-top-width: 0; }

.topic-list {
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 15.5px;
  line-height: 1.7;
}
.topic-list li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 9px;
}
.topic-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 8px;
  background: var(--green);
}

/* ---------- imágenes ---------- */

figure { margin: 0; }

.fig-main img,
.fig-detail img {
  display: block;
  width: 100%;
  height: auto;
}

.fig-main { padding: 0; }
.fig-main img { border-bottom: 1px solid var(--line); }
.fig-main .caption { padding: 16px 20px; }

.fig-side { display: flex; align-items: flex-end; }

.fig-detail .caption { padding-top: 14px; }

/* ---------- listas de contenido ---------- */

.prose ul, .prose ol { margin: 0 0 18px; padding-left: 20px; }
.prose li { margin-bottom: 8px; }

.check {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  font-size: 16px;
  line-height: 1.7;
}
.check li {
  border: 1px solid var(--line);
  margin: 0 0 -1px -1px;
  padding: 16px 18px 16px 38px;
  position: relative;
}
.check li::before {
  content: "";
  position: absolute;
  left: 16px;
  top: 24px;
  width: 9px;
  height: 9px;
  border: 1px solid var(--green);
}
.band--dark .check li { border-color: var(--line-dark); }
.band--dark .check li::before { border-color: #8fc39d; }

.steps {
  counter-reset: step;
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
}
.steps li {
  counter-increment: step;
  border-top: 1px solid var(--line);
  padding: 18px 0 18px 54px;
  position: relative;
}
.steps li:last-child { border-bottom: 1px solid var(--line); }
.steps li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 18px;
  font-family: var(--serif);
  font-size: 15px;
  color: var(--ochre);
}
.steps strong { font-weight: 600; }

/* ---------- composición de Sobre el proyecto ---------- */

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 8fr);
  column-gap: 40px;
}
.about-grid > .about-marks { border-right: 1px solid var(--line); padding-right: 28px; }

.about-marks ul {
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--muted);
  position: sticky;
  top: 24px;
}
.about-marks li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 14px;
}
.about-marks li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 7px;
  height: 7px;
  background: var(--ochre);
}

.about-body h2 { margin-top: 34px; }
.about-body h2:first-child { margin-top: 0; }

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

.site-foot {
  border-top: 1px solid var(--line);
  margin-top: var(--rhythm);
  padding-bottom: 46px;
}
.site-foot .wrap { padding-top: 0; }

.foot-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-top: 36px;
}
.foot-cell {
  border: 1px solid var(--line);
  margin: 0 0 -1px -1px;
  padding: 22px 20px;
  font-size: 15px;
  line-height: 1.7;
}
.foot-cell h2 {
  font-size: 13px;
  font-family: var(--sans);
  color: var(--ochre);
  letter-spacing: 0.06em;
  margin: 0 0 10px;
  line-height: 1.4;
}
.foot-cell .name {
  font-family: var(--serif);
  font-size: 1.25rem;
  line-height: 1.2;
}
.foot-cell ul { list-style: none; margin: 0; padding: 0; }
.foot-cell li { margin-bottom: 4px; }
.foot-note { font-size: 14px; color: var(--muted); }

.foot-base {
  margin-top: 26px;
  font-size: 13px;
  color: var(--muted);
}

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

@media (max-width: 900px) {
  :root { --rhythm: 44px; }

  body { font-size: 16.5px; }

  .wrap { padding: 0 18px; }

  h1 { grid-column: span 12; padding: 22px 0 24px; }

  .grid > .cell,
  .c3, .c4, .c5, .c6, .c7, .c8, .c9 { grid-column: span 12; }

  .cell + .cell { border-left-width: 1px; border-top-width: 0; }
  .hero-grid .cell + .cell { border-top-width: 0; }
  .cell--void { display: none; }

  .fig-side { display: block; }

  .check { grid-template-columns: minmax(0, 1fr); }

  .about-grid { grid-template-columns: minmax(0, 1fr); column-gap: 0; }
  .about-grid > .about-marks {
    border-right: 0;
    border-bottom: 1px solid var(--line);
    padding-right: 0;
    padding-bottom: 22px;
    margin-bottom: 28px;
  }
  .about-marks ul { position: static; }

  .foot-grid { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 560px) {
  .site-head .wrap { flex-direction: column; align-items: flex-start; }
  .site-nav ul { gap: 4px 16px; font-size: 14.5px; }
  .cell { padding: 20px 18px; }
}