/* Flibervesu — hoja de estilo común */

:root {
  --gap: 24px;
  --paper: #f4eee1;
  --paper-alt: #e8dfcc;
  --ink-dark: #141414;
  --text: #1a1814;
  --text-soft: #736c5b;
  --on-dark: #f4eee1;
  --accent: #2b4a8c;
  --accent-2: #8a6a1e;
  --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;
}

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

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;
}

/* ---------- 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);
}

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

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

h1 { font-size: clamp(40px, 6.2vw, 76px); }
h2 { font-size: clamp(25px, 3vw, 34px); }
h3 { font-size: 20px; line-height: 1.2; }

p { margin: 0 0 20px; }
p:last-child { margin-bottom: 0; }

.caption {
  font-size: 13px;
  line-height: 1.55;
  color: var(--text-soft);
  font-family: var(--sans);
}

.secnum {
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--accent-2);
  display: block;
  margin-bottom: 14px;
}

.rule {
  border: 0;
  height: 1px;
  background: var(--accent-2);
  margin: 0 0 26px;
  width: calc((100% - 5 * var(--gap)) / 3 + var(--gap));
}

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

.site-head { padding-top: 34px; }

.nav-line {
  height: 1px;
  background: var(--accent);
  width: calc((100% - 11 * var(--gap)) * 5 / 12 + 4 * var(--gap));
  margin-top: 18px;
}

.nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 34px;
}

.nav a {
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: none;
  color: var(--text);
  text-decoration: none;
  padding: 2px 0;
  display: inline-block;
}

.nav a:hover,
.nav a[aria-current="page"] {
  color: var(--accent);
  box-shadow: inset 0 -1px 0 var(--accent);
}

.brand {
  font-family: var(--serif);
  font-size: 15px;
  letter-spacing: 0.06em;
  margin: 0 0 16px;
  color: var(--text);
}

/* ---------- portada ---------- */

.hero { padding: 56px 0 0; }

.hero-title { grid-column: 1 / span 7; }

.hero-title .line {
  display: block;
}

.hero-title .line--indent {
  margin-left: calc((100% - 6 * var(--gap)) * 2 / 7 + 2 * var(--gap));
}

.hero-topics {
  grid-column: 10 / span 3;
  align-self: end;
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--accent-2);
}

.hero-topics li {
  border-bottom: 1px solid var(--accent-2);
  font-size: 13px;
  line-height: 1.5;
  padding: 9px 0;
  color: var(--text-soft);
}

.hero-lead {
  grid-column: 1 / span 6;
  margin-top: 44px;
}

.hero-lead p { font-size: 18px; }

/* ---------- imagen principal ---------- */

.main-figure {
  margin: 64px 0 0;
}

.main-figure .frame {
  grid-column: 8 / span 5;
  border: 1px solid var(--accent-2);
  padding: 8px;
}

.main-figure figcaption {
  grid-column: 1 / span 3;
  align-self: end;
  padding-bottom: 4px;
}

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

.sec { margin-top: 64px; }

.sec .col-text { grid-column: 1 / span 6; }

.sec--shift .col-text { grid-column: 4 / span 6; }

.band {
  background: var(--paper-alt);
  padding: 64px 0;
  margin-top: 64px;
}

.band .sec:first-child { margin-top: 0; }

/* sección contrastada */

.dark {
  background: var(--ink-dark);
  color: var(--on-dark);
  padding: 72px 0;
  margin-top: 64px;
}

.dark h2, .dark h3 { color: var(--on-dark); }
.dark .caption { color: #a49a86; }
.dark .secnum { color: #cbaa61; }
.dark a { color: #9db4e6; }

.dark-fig { grid-column: 1 / span 4; margin: 0; }
.dark-fig figcaption { margin-top: 12px; }

.dark-text { grid-column: 6 / span 6; }

/* listas */

ul.checklist, ol.steps {
  margin: 0 0 20px;
  padding: 0 0 0 22px;
}

ul.checklist { list-style: none; padding-left: 0; }

ul.checklist li {
  position: relative;
  padding-left: 22px;
  margin-bottom: 10px;
}

ul.checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 13px;
  width: 10px;
  height: 1px;
  background: var(--accent);
}

ol.steps li { margin-bottom: 10px; }
ol.steps::marker, ol.steps li::marker { color: var(--accent); }

.dark ul.checklist li::before { background: #9db4e6; }

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

.page-head { padding: 56px 0 0; }
.page-head h1 { grid-column: 1 / span 8; }
.page-head .page-intro {
  grid-column: 1 / span 6;
  margin-top: 32px;
  color: var(--text-soft);
}

.doc { margin: 56px 0 0; }
.doc .col-narrow { grid-column: 1 / span 6; }

.doc-block { margin-bottom: 56px; }
.doc-block:last-child { margin-bottom: 0; }

.doc-block h2 {
  position: relative;
  padding-left: 40px;
  margin-bottom: 20px;
}

.doc-block h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 24px;
  height: 1px;
  background: var(--accent);
}

.doc-block h3 { margin: 28px 0 12px; }

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

.contact-line {
  font-family: var(--serif);
  font-size: clamp(20px, 2.4vw, 26px);
  line-height: 1.3;
}

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

.site-foot {
  margin-top: 88px;
  padding-bottom: 64px;
}

.foot-line {
  height: 1px;
  background: var(--accent);
  width: calc((100% - 11 * var(--gap)) * 5 / 12 + 4 * var(--gap));
  margin-bottom: 34px;
}

.foot-a { grid-column: 1 / span 5; }
.foot-b { grid-column: 6 / span 3; }
.foot-c { grid-column: 9 / span 4; }

.foot-a .name {
  font-family: var(--serif);
  font-size: 22px;
  margin: 0 0 10px;
}

.foot-b ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.foot-b li { margin-bottom: 8px; }

.foot-b a, .foot-c a {
  font-size: 14px;
}

.foot-b a {
  color: var(--text);
  text-decoration: none;
  box-shadow: inset 0 -1px 0 rgba(43, 74, 140, 0.35);
}

.foot-b a:hover { color: var(--accent); box-shadow: inset 0 -1px 0 var(--accent); }

.foot-note {
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-soft);
  margin-top: 12px;
}

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

@media (max-width: 1000px) {
  :root { --gap: 20px; }

  .hero-title { grid-column: 1 / span 8; }
  .hero-topics { grid-column: 10 / span 3; }
  .sec .col-text,
  .sec--shift .col-text { grid-column: 1 / span 8; }
  .main-figure .frame { grid-column: 6 / span 7; }
  .main-figure figcaption { grid-column: 1 / span 5; }
  .dark-fig { grid-column: 1 / span 5; }
  .dark-text { grid-column: 7 / span 6; }
  .doc .col-narrow { grid-column: 1 / span 8; }
  .page-head .page-intro { grid-column: 1 / span 8; }
}

@media (max-width: 760px) {
  body { font-size: 16px; line-height: 1.75; }

  .wrap { padding: 0 20px; }

  .grid { display: block; }

  .hero { padding-top: 40px; }

  .hero-title .line--indent { margin-left: 0; }

  .hero-topics { margin-top: 34px; }

  .hero-lead { margin-top: 28px; }

  .main-figure { margin-top: 40px; }
  .main-figure figcaption { margin-top: 12px; }

  .sec { margin-top: 40px; }

  .band, .dark { padding: 40px 0; margin-top: 40px; }

  .dark-text { margin-top: 28px; }

  .rule { width: 60%; }

  .nav-line, .foot-line { width: 62%; }

  .nav ul { gap: 4px 22px; }

  .doc { margin-top: 40px; }
  .doc-block { margin-bottom: 44px; }

  .foot-b, .foot-c { margin-top: 28px; }

  .site-foot { margin-top: 56px; padding-bottom: 48px; }
}