/* Rervaza — hoja de estilo común
   Paleta verde-papel con burdeos y ocre, composición escalonada tipo cartel */

:root {
  --paper: #f0f2e9;
  --paper-alt: #e3e7da;
  --ink: #1e2119;
  --ink-soft: #6c7264;
  --dark: #2b1d1e;
  --accent: #8c2f2c;
  --ochre: #8a6f1e;

  --mono: ui-monospace, Consolas, "Liberation Mono", monospace;
  --sans: system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  --gap: 24px;
  --max: 1240px;
}

*,
*::before,
*::after { 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: 17px;
  line-height: 1.75;
  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: 3px solid var(--accent);
  outline-offset: 3px;
}

/* ---------- Rejilla de 12 columnas ---------- */

.wrap {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 28px;
}

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

.c5  { grid-column: 1 / span 5; }
.c6  { grid-column: 1 / span 6; }
.c7  { grid-column: 1 / span 7; }
.c9  { grid-column: 1 / span 9; }
.c7r { grid-column: 5 / span 7; }
.c6r { grid-column: 6 / span 6; }
.c5r { grid-column: 7 / span 5; }
.c9r { grid-column: 4 / span 9; }

/* ---------- Tipografía ---------- */

h1, h2, h3,
.kicker,
.numlist > li::before,
.nav a,
.brand,
.figcap,
.sep-label {
  font-family: var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

h1 {
  font-size: clamp(34px, 6.4vw, 78px);
  line-height: 1.02;
  font-weight: 700;
  margin: 0;
  letter-spacing: 0.01em;
}

h1 .l1 { display: block; }
h1 .l2 { display: block; margin-left: 8.33%; }
h1 .l3 { display: block; margin-left: 16.66%; color: var(--accent); }

h2 {
  font-size: clamp(20px, 2.4vw, 28px);
  line-height: 1.25;
  font-weight: 700;
  margin: 0 0 22px;
}

h3 {
  font-size: 15px;
  line-height: 1.4;
  font-weight: 700;
  margin: 34px 0 10px;
  color: var(--accent);
}

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

.kicker {
  font-size: 12px;
  color: var(--ochre);
  margin: 0 0 18px;
  letter-spacing: 0.22em;
}

.lead { font-size: 22px; line-height: 1.6; }

.secnum {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--ochre);
  display: block;
  margin-bottom: 12px;
}

/* ---------- Cabecera y navegación ---------- */

.site-header {
  border-bottom: 1px solid rgba(30, 33, 25, 0.18);
  padding: 20px 0;
}

.header-row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px 28px;
}

.brand {
  font-size: 19px;
  font-weight: 700;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: 0.2em;
}

.brand:hover { color: var(--accent); }

.nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav a {
  font-size: 12px;
  color: var(--ink-soft);
  text-decoration: none;
  padding-bottom: 3px;
  border-bottom: 2px solid transparent;
}

.nav a:hover,
.nav a[aria-current="page"] {
  color: var(--ink);
  border-bottom-color: var(--accent);
}

/* ---------- Ritmo de secciones ---------- */

.band { padding: 120px 0; }
.band-tight { padding: 56px 0; }
.band-alt { background: var(--paper-alt); }

.band-dark {
  background: var(--dark);
  color: var(--paper);
  padding: 120px 0;
}

.band-dark h2 { color: var(--paper); }
.band-dark h3 { color: #d9a441; }
.band-dark .secnum,
.band-dark .kicker { color: #d9a441; }
.band-dark a { color: #e7b6b1; }
.band-dark .figcap { color: #b3b0a3; }

/* ---------- Hero ---------- */

.hero { padding: 96px 0 64px; }

.hero-head {
  border-left: 4px solid var(--accent);
  padding-left: 26px;
  margin-bottom: 48px;
}

.hero-intro { grid-column: 1 / span 5; }

.topics {
  grid-column: 7 / span 6;
  align-self: end;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 10px;
}

.topics li::after {
  content: "/";
  color: var(--accent);
  margin-left: 10px;
}

.topics li:last-child::after { content: ""; }

/* ---------- Figuras ---------- */

.figure-main {
  margin: 0;
  grid-column: 5 / span 8;
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 14px;
  align-items: start;
}

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

.figcap {
  font-size: 11px;
  line-height: 1.5;
  color: var(--ink-soft);
  letter-spacing: 0.16em;
}

.figcap-vert {
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  justify-self: start;
  margin: 0;
  border-left: 2px solid var(--ochre);
  padding-left: 8px;
}

.figure-detail {
  margin: 0;
  grid-column: 8 / span 5;
}

.figure-detail img { width: 100%; }
.figure-detail figcaption { margin-top: 12px; }

/* ---------- Separadores ---------- */

.rule {
  border: 0;
  height: 3px;
  background: var(--accent);
  width: 33.33%;
  margin: 0;
}

.rule-center { margin: 0 auto; }
.rule-right { margin-left: auto; }
.rule-ochre { background: var(--ochre); }

/* ---------- Listas ---------- */

.numlist {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: n;
}

.numlist > li {
  counter-increment: n;
  position: relative;
  padding-left: 62px;
  margin-bottom: 22px;
  border-top: 1px solid rgba(30, 33, 25, 0.16);
  padding-top: 14px;
}

.band-dark .numlist > li { border-top-color: rgba(240, 242, 233, 0.22); }

.numlist > li::before {
  content: counter(n, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 10px;
  font-size: 26px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0;
}

.band-dark .numlist > li::before { color: #d9a441; }

.numlist strong { display: block; }

.plain {
  list-style: none;
  margin: 0;
  padding: 0;
}

.plain li {
  padding-left: 20px;
  position: relative;
  margin-bottom: 12px;
}

.plain li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--accent);
}

.band-dark .plain li::before { color: #d9a441; }

/* ---------- Definiciones (glosario) ---------- */

.terms { margin: 0; }

.terms dt {
  font-family: var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 13px;
  font-weight: 700;
  margin-top: 22px;
  color: var(--accent);
}

.terms dd { margin: 6px 0 0; }

/* ---------- Páginas de texto ---------- */

.page-head { padding: 72px 0 0; }

.page-head h1 {
  font-size: clamp(30px, 4.6vw, 52px);
  border-left: 4px solid var(--accent);
  padding-left: 22px;
}

.prose h2 {
  margin-top: 54px;
  padding-top: 18px;
  border-top: 1px solid rgba(30, 33, 25, 0.18);
}

.prose h2:first-of-type { margin-top: 0; border-top: 0; padding-top: 0; }

.side-head {
  display: grid;
  grid-template-columns: 3fr 9fr;
  gap: var(--gap);
  align-items: start;
}

.side-head > h2 {
  grid-column: 1;
  margin: 0;
  border: 0;
  padding: 0;
  font-size: 15px;
  color: var(--accent);
}

.side-head > div { grid-column: 2; }

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

.site-footer {
  border-top: 3px solid var(--accent);
  padding: 56px 0 72px;
  margin-top: 0;
  background: var(--paper-alt);
}

.footer-name {
  font-family: var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.26em;
  font-size: clamp(28px, 5vw, 58px);
  font-weight: 700;
  margin: 0 0 34px;
  line-height: 1;
}

.footer-cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px var(--gap);
}

.footer-cols ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-cols li { margin-bottom: 10px; }

.footer-cols a {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--accent);
  padding-bottom: 2px;
}

.footer-cols a:hover { color: var(--accent); }

.footer-note {
  font-size: 14px;
  color: var(--ink-soft);
  margin: 16px 0 0;
}

.footer-mail {
  font-family: var(--mono);
  font-size: 14px;
  letter-spacing: 0.06em;
  text-transform: none;
}

/* ---------- Adaptación a pantallas medianas ---------- */

@media (max-width: 900px) {
  .band { padding: 64px 0; }
  .band-dark { padding: 64px 0; }
  .band-tight { padding: 40px 0; }
  .hero { padding: 56px 0 40px; }

  .c5, .c6, .c7, .c9,
  .c5r, .c6r, .c7r, .c9r,
  .hero-intro,
  .topics,
  .figure-main,
  .figure-detail { grid-column: 1 / -1; }

  .topics { margin-top: 22px; }

  h1 .l2, h1 .l3 { margin-left: 0; }

  .figure-main {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .figcap-vert {
    writing-mode: horizontal-tb;
    transform: none;
    border-left: 0;
    border-top: 2px solid var(--ochre);
    padding: 8px 0 0;
  }

  .rule { width: 60%; }

  .side-head { grid-template-columns: 1fr; }
  .side-head > h2, .side-head > div { grid-column: 1; }
  .side-head > h2 { margin-bottom: 8px; }

  .footer-cols { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  body { font-size: 16px; }
  .wrap { padding: 0 20px; }
  .lead { font-size: 19px; }
  .numlist > li { padding-left: 46px; }
  .numlist > li::before { font-size: 21px; }
  .rule { width: 75%; }
}