/* Samelo — hoja de estilos común
   Eje especular: indigo profundo, arena y cobre */

:root {
  --bg: #151b2b;
  --bg-alt: #1c2436;
  --bg-contrast: #eee8dc;
  --text: #e4e0d4;
  --text-dim: #8a93a5;
  --text-on-contrast: #151b2b;
  --accent: #c98a4c;
  --accent-2: #7fa3b8;
  --serif: Georgia, 'Times New Roman', serif;
  --sans: system-ui, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --gut: 28px;
}

* { box-sizing: border-box; }

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

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

.wrap {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

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

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

h1, h2, h3 {
  font-family: var(--serif);
  font-weight: 400;
  line-height: 1.05;
  margin: 0 0 20px;
  letter-spacing: -0.01em;
}

h1 { font-size: 54px; }
h2 { font-size: 31px; }
h3 { font-size: 21px; line-height: 1.2; }

p { margin: 0 0 22px; }

a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid rgba(201, 138, 76, 0.45);
  padding-bottom: 1px;
}

a:hover { border-bottom-color: var(--accent); }

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

.lede { font-size: 19px; color: var(--text); }

.caption {
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-dim);
  font-family: var(--sans);
  margin: 14px 0 0;
}

.num {
  display: block;
  font-size: 13px;
  color: var(--accent-2);
  margin-bottom: 10px;
  letter-spacing: 0.04em;
}

.dim { color: var(--text-dim); }

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

.site-head {
  border-bottom: 1px solid rgba(138, 147, 165, 0.22);
}

.site-head .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: center;
  gap: 10px 26px;
  padding-top: 24px;
  padding-bottom: 22px;
  text-align: center;
}

.brand {
  font-family: var(--serif);
  font-size: 25px;
  color: var(--text);
  border: 0;
  letter-spacing: 0.03em;
}

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

.site-nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 6px 22px;
  margin: 0;
  padding: 0;
}

.site-nav a {
  font-size: 15px;
  color: var(--text-dim);
  border-bottom: 1px solid transparent;
}

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

/* ---------- Secciones ---------- */

section { padding: 80px 0; }

.s-64 { padding: 64px 0; }
.s-80 { padding: 80px 0; }
.s-96 { padding: 96px 0; }

.alt { background: var(--bg-alt); }

.contrast {
  background: var(--bg-contrast);
  color: var(--text-on-contrast);
}

.contrast h2,
.contrast h3 { color: var(--text-on-contrast); }

.contrast .caption { color: #5c5347; }

.contrast .num { color: #7a6a55; }

.contrast a {
  color: #91572a;
  border-bottom-color: rgba(145, 87, 42, 0.5);
}

/* ---------- Eje especular (hero) ---------- */

.hero {
  position: relative;
  padding: 76px 0 88px;
  text-align: center;
}

.axis {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 1px;
  background: linear-gradient(
    to bottom,
    rgba(201, 138, 76, 0) 0%,
    rgba(201, 138, 76, 0.55) 18%,
    rgba(201, 138, 76, 0.55) 82%,
    rgba(201, 138, 76, 0) 100%
  );
}

.hero .wrap { position: relative; }

.hero h1 {
  max-width: 15ch;
  margin: 0 auto 26px;
  text-wrap: balance;
}

.hero-lede {
  grid-column: 4 / 10;
  margin: 0 auto 56px;
}

.hero-sides { align-items: start; }

.hero-side-l { grid-column: 2 / 5; text-align: right; }
.hero-side-r { grid-column: 9 / 12; text-align: left; }

.hero-side-l p,
.hero-side-r p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-dim);
  margin: 0;
}

.hero-side-l .num,
.hero-side-r .num { margin-bottom: 8px; }

/* ---------- Imagen principal ---------- */

.figure-axis {
  margin: 56px auto 0;
  max-width: 680px;
  text-align: center;
}

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

.figure-axis img {
  border: 1px solid rgba(138, 147, 165, 0.28);
}

/* ---------- Separador de arco ---------- */

.arc {
  width: 100%;
  max-width: 340px;
  height: 26px;
  margin: 0 auto;
  border-top: 1px solid rgba(127, 163, 184, 0.55);
  border-radius: 170px 170px 0 0;
}

.arc-warm { border-top-color: rgba(201, 138, 76, 0.6); }

.arc-dark { border-top-color: rgba(21, 27, 43, 0.35); }

/* ---------- Composiciones de contenido ---------- */

.centered { text-align: center; }

.centered h2 { margin-bottom: 14px; }

.head-axis {
  grid-column: 4 / 10;
  text-align: center;
  margin: 0 auto 48px;
}

.pair-l { grid-column: 2 / 6; }
.pair-r { grid-column: 8 / 12; }

.narrow { grid-column: 4 / 10; }

/* narrativa asimétrica: 7 columnas a la izquierda */
.narrative { grid-column: 1 / 8; }

.stack { display: block; }

.stack > * + * { margin-top: 44px; }

.step {
  border-top: 1px solid rgba(138, 147, 165, 0.22);
  padding-top: 22px;
}

.contrast .step { border-top-color: rgba(21, 27, 43, 0.18); }

ul.marks, ol.marks {
  margin: 0 0 22px;
  padding-left: 0;
  list-style: none;
}

ul.marks li, ol.marks li {
  position: relative;
  padding-left: 26px;
  margin-bottom: 12px;
}

ul.marks li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 13px;
  width: 11px;
  height: 1px;
  background: var(--accent);
}

ol.marks { counter-reset: m; }

ol.marks li { counter-increment: m; }

ol.marks li::before {
  content: counter(m, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0;
  font-size: 13px;
  color: var(--accent-2);
}

.contrast ol.marks li::before { color: #7a6a55; }

.contrast ul.marks li::before { background: #91572a; }

/* ---------- Sección de detalle (contraste) ---------- */

.detail-fig { grid-column: 1 / 6; }
.detail-txt { grid-column: 7 / 13; }

.figure-detail { margin: 0; }

.figure-detail img { border: 1px solid rgba(21, 27, 43, 0.2); }

/* ---------- Pie de página ---------- */

.site-foot {
  padding: 0 0 64px;
  text-align: center;
}

.site-foot .arc { margin-bottom: 40px; }

.foot-name {
  font-family: var(--serif);
  font-size: 24px;
  letter-spacing: 0.03em;
  margin: 0 0 18px;
}

.foot-nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 6px 0;
  margin: 0 0 22px;
  padding: 0;
  font-size: 15px;
}

.foot-nav li + li::before {
  content: "·";
  color: var(--text-dim);
  margin: 0 14px;
}

.foot-nav a { color: var(--text-dim); border-bottom-color: transparent; }

.foot-nav a:hover { color: var(--text); border-bottom-color: var(--accent); }

.foot-mail { margin: 0 0 12px; }

.foot-note {
  font-size: 13px;
  color: var(--text-dim);
  max-width: 58ch;
  margin: 0 auto;
  line-height: 1.7;
}

/* ---------- Páginas interiores ---------- */

.page-head {
  padding: 64px 0 40px;
  position: relative;
  text-align: center;
}

.page-head h1 { font-size: 42px; max-width: 20ch; margin: 0 auto 18px; }

.page-head .kicker {
  font-size: 13px;
  color: var(--accent-2);
  margin: 0 0 18px;
}

.prose { grid-column: 4 / 10; }

.prose h2 { margin-top: 44px; }

.prose h2:first-child { margin-top: 0; }

.prose h3 { margin-top: 30px; }

/* ---------- Responsive ---------- */

@media (max-width: 900px) {
  h1 { font-size: 42px; }
  .page-head h1 { font-size: 34px; }
  h2 { font-size: 27px; }

  .hero-lede,
  .head-axis,
  .narrow,
  .prose,
  .narrative { grid-column: 1 / -1; }

  .hero-side-l,
  .hero-side-r { grid-column: 1 / 7; text-align: left; }
  .hero-side-r { grid-column: 7 / 13; }

  .pair-l { grid-column: 1 / 7; }
  .pair-r { grid-column: 7 / 13; }

  .detail-fig,
  .detail-txt { grid-column: 1 / -1; }

  .detail-txt { margin-top: 34px; }
}

@media (max-width: 620px) {
  body { font-size: 16px; }
  h1 { font-size: 32px; }
  .page-head h1 { font-size: 28px; }
  h2 { font-size: 24px; }
  h3 { font-size: 19px; }

  section { padding: 48px 0; }
  .s-64, .s-80, .s-96 { padding: 48px 0; }
  .hero { padding: 40px 0 56px; }
  .page-head { padding: 40px 0 28px; }
  .site-foot { padding-bottom: 48px; }

  .axis { display: none; }

  .grid { gap: 0; }

  .hero-side-l,
  .hero-side-r,
  .pair-l,
  .pair-r { grid-column: 1 / -1; }

  .hero-side-r,
  .pair-r { margin-top: 28px; }

  .figure-axis { margin-top: 40px; }

  .foot-nav ul { display: block; }
  .foot-nav li { display: block; margin-bottom: 8px; }
  .foot-nav li + li::before { content: none; }
}