/* ============================================
   VITALIS40 — Design tokens
   Paleta: verde bosque (vitalidad, crecimiento) + ámbar (energía, amanecer / segunda mitad de la vida)
   Tipografía: Fraunces (display, carácter editorial) + Inter (cuerpo) + IBM Plex Mono (datos/cifras)
   ============================================ */

:root {
  --forest-900: #16281c;
  --forest-700: #234634;
  --forest-500: #3a6349;
  --sage-300: #9db79c;
  --sand-100: #faf6ee;
  --paper-200: #f1e9d8;
  --amber-500: #c98a3e;
  --amber-600: #a86b28;
  --charcoal-900: #22241f;
  --line: rgba(34, 36, 31, 0.12);

  --font-display: "Fraunces", "Iowan Old Style", Georgia, serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", "SFMono-Regular", Menlo, monospace;

  --radius: 4px;
  --max-w: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--sand-100);
  color: var(--charcoal-900);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; }

.wrap { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.15;
  margin: 0 0 .5em;
  color: var(--forest-900);
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--amber-600);
  display: inline-block;
  margin-bottom: 10px;
}

p { margin: 0 0 1.1em; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(250, 246, 238, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 22px;
  color: var(--forest-900);
  text-decoration: none;
  letter-spacing: -.01em;
}
.logo span { color: var(--amber-500); }
.nav { display: flex; gap: 28px; align-items: center; }
.nav a {
  text-decoration: none;
  font-size: 14.5px;
  font-weight: 500;
  color: var(--charcoal-900);
  padding: 6px 0;
  border-bottom: 2px solid transparent;
  transition: border-color .15s ease;
}
.nav a:hover { border-color: var(--amber-500); }
.nav-toggle { display: none; background: none; border: none; font-size: 24px; cursor: pointer; color: var(--forest-900); }

@media (max-width: 760px) {
  .nav { position: fixed; top: 72px; left: 0; right: 0; background: var(--sand-100); flex-direction: column; align-items: flex-start; padding: 20px 24px; border-bottom: 1px solid var(--line); gap: 14px; transform: translateY(-140%); transition: transform .2s ease; }
  .nav.open { transform: translateY(0); }
  .nav-toggle { display: block; }
}

/* ---------- Hero ---------- */
.hero {
  padding: 64px 0 56px;
  border-bottom: 1px solid var(--line);
}
.hero .wrap {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 56px;
  align-items: center;
}
@media (max-width: 860px) { .hero .wrap { grid-template-columns: 1fr; gap: 36px; } }

.hero h1 { font-size: clamp(34px, 4.5vw, 52px); }
.hero .lede { font-size: 18px; color: var(--forest-700); max-width: 46ch; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--forest-900);
  color: var(--sand-100);
  text-decoration: none;
  font-weight: 600;
  font-size: 14.5px;
  padding: 13px 22px;
  border-radius: var(--radius);
  border: 1px solid var(--forest-900);
  cursor: pointer;
  transition: background .15s ease, color .15s ease;
}
.btn:hover { background: var(--sand-100); color: var(--forest-900); }
.btn-amber { background: var(--amber-500); border-color: var(--amber-500); color: var(--forest-900); }
.btn-amber:hover { background: transparent; color: var(--amber-600); }

/* ---------- Signature widget: Panel Vital (calculadora) ---------- */
.panel-vital {
  background: var(--forest-900);
  color: var(--sand-100);
  border-radius: var(--radius);
  padding: 28px;
  position: relative;
  overflow: hidden;
}
.panel-vital::before {
  content: "";
  position: absolute;
  top: -60px; right: -60px;
  width: 180px; height: 180px;
  background: radial-gradient(circle, var(--amber-500) 0%, transparent 70%);
  opacity: .35;
}
.panel-vital h3 {
  color: var(--sand-100);
  font-size: 18px;
  margin-bottom: 4px;
}
.panel-vital .sub { color: var(--sage-300); font-size: 13.5px; margin-bottom: 20px; }
.panel-vital label {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--sage-300);
  margin-bottom: 6px;
}
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 14px; }
.panel-vital input, .panel-vital select {
  width: 100%;
  background: rgba(250,246,238,.08);
  border: 1px solid rgba(250,246,238,.25);
  color: var(--sand-100);
  padding: 10px 12px;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 14px;
}
.panel-vital input::placeholder { color: rgba(250,246,238,.45); }
.result-box {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px dashed rgba(250,246,238,.25);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}
.result-box .num {
  font-family: var(--font-mono);
  font-size: 32px;
  color: var(--amber-500);
  font-weight: 600;
}
.result-box .label { font-size: 12.5px; color: var(--sage-300); }

/* ---------- Category chips ---------- */
.chips { display: flex; flex-wrap: wrap; gap: 10px; padding: 40px 0 8px; }
.chip {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .04em;
  text-decoration: none;
  color: var(--forest-900);
  border: 1px solid var(--line);
  padding: 8px 16px;
  border-radius: 999px;
  background: var(--paper-200);
}
.chip:hover { border-color: var(--amber-500); }

/* ---------- Article grid / cards ---------- */
.section-head { display: flex; align-items: baseline; justify-content: space-between; padding: 48px 0 20px; border-top: 1px solid var(--line); margin-top: 24px; }
.section-head h2 { font-size: 26px; margin: 0; }
.section-head .count { font-family: var(--font-mono); font-size: 13px; color: var(--sage-300); }

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  padding-bottom: 48px;
}
@media (max-width: 900px) { .grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .grid { grid-template-columns: 1fr; } }

.card {
  background: var(--paper-200);
  border-radius: var(--radius);
  padding: 22px;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  border: 1px solid transparent;
  transition: border-color .15s ease, transform .15s ease;
}
.card:hover { border-color: var(--amber-500); transform: translateY(-2px); }
.card .cat { font-family: var(--font-mono); font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--amber-600); margin-bottom: 10px; }
.card h3 { font-size: 19px; margin-bottom: 8px; }
.card p { font-size: 14.5px; color: var(--forest-700); margin-bottom: 14px; flex-grow: 1; }
.card .meta { font-family: var(--font-mono); font-size: 11.5px; color: var(--sage-300); border-top: 1px solid var(--line); padding-top: 12px; }

/* ---------- CTA band ---------- */
.cta-band {
  background: var(--forest-900);
  color: var(--sand-100);
  padding: 56px 0;
  margin-top: 40px;
}
.cta-band .wrap { display: flex; justify-content: space-between; align-items: center; gap: 24px; flex-wrap: wrap; }
.cta-band h2 { color: var(--sand-100); font-size: 28px; margin-bottom: 6px; }
.cta-band p { color: var(--sage-300); margin: 0; }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--line); padding: 40px 0; margin-top: 20px; }
.site-footer .wrap { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 16px; align-items: center; }
.foot-links { display: flex; gap: 20px; flex-wrap: wrap; }
.foot-links a { font-size: 13.5px; text-decoration: none; color: var(--forest-700); }
.foot-links a:hover { color: var(--amber-600); }
.copyright { font-family: var(--font-mono); font-size: 12px; color: var(--sage-300); }

/* ---------- Article page ---------- */
.article-header { padding: 48px 0 32px; border-bottom: 1px solid var(--line); }
.article-header .eyebrow { margin-bottom: 14px; }
.article-header h1 { font-size: clamp(28px, 4vw, 42px); max-width: 22ch; }
.article-meta { display: flex; gap: 18px; font-family: var(--font-mono); font-size: 12.5px; color: var(--sage-300); margin-top: 18px; }

.article-body { max-width: 720px; margin: 0 auto; padding: 40px 24px 20px; }
.article-body h2 { font-size: 24px; margin-top: 1.6em; }
.article-body h3 { font-size: 19px; margin-top: 1.3em; }
.article-body p { font-size: 17px; color: var(--charcoal-900); }
.article-body ul, .article-body ol { font-size: 17px; padding-left: 22px; margin-bottom: 1.2em; }
.article-body li { margin-bottom: .5em; }
.pull-note {
  background: var(--paper-200);
  border-left: 3px solid var(--amber-500);
  padding: 16px 20px;
  font-size: 15px;
  color: var(--forest-700);
  border-radius: 0 var(--radius) var(--radius) 0;
  margin: 1.6em 0;
}
.ad-slot {
  max-width: 720px;
  margin: 32px auto;
  padding: 0 24px;
  text-align: center;
}
.ad-slot .placeholder {
  border: 1px dashed var(--line);
  padding: 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--sage-300);
  border-radius: var(--radius);
}

.related { max-width: 720px; margin: 40px auto 0; padding: 32px 24px 0; border-top: 1px solid var(--line); }
.related h4 { font-family: var(--font-mono); text-transform: uppercase; font-size: 12px; letter-spacing: .1em; color: var(--sage-300); margin-bottom: 16px; }
.related-list a { display: block; text-decoration: none; color: var(--forest-900); font-family: var(--font-display); font-size: 17px; padding: 12px 0; border-bottom: 1px solid var(--line); }
.related-list a:hover { color: var(--amber-600); }

/* ---------- Static pages ---------- */
.static-body { max-width: 720px; margin: 0 auto; padding: 48px 24px 60px; }
.static-body h1 { font-size: 34px; }
.static-body h2 { font-size: 21px; margin-top: 1.6em; }
.static-body p, .static-body li { font-size: 16px; color: var(--charcoal-900); }