/* Instituto Formar — hoja de estilos */
:root {
  --ink: #1f232b;          /* fondo del logo */
  --ink-2: #2a2f39;
  --teal: #12917f;         /* color del logo */
  --teal-dark: #0c6f61;
  --teal-soft: #e3f3f0;
  --paper: #f7f6f2;
  --white: #ffffff;
  --text: #22262e;
  --muted: #5d6470;
  --line: #e2e0d9;
  --radius: 14px;
  --wrap: 1160px;
  --sans: "Raleway", "Helvetica Neue", Arial, sans-serif;
  --serif: "Source Serif 4", Georgia, serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  margin: 0;
  font-family: var(--sans);
  background: var(--paper);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }

/* ---------- Navegación ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(31, 35, 43, .96);
  backdrop-filter: blur(8px);
  color: var(--white);
}
.nav .wrap { display: flex; align-items: center; justify-content: space-between; height: 68px; gap: 16px; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.brand img { width: 36px; height: 36px; object-fit: cover; border-radius: 6px; }
.brand span { font-weight: 700; letter-spacing: .08em; font-size: 15px; }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a { text-decoration: none; font-size: 14px; font-weight: 500; opacity: .85; }
.nav-links a:hover, .nav-links a[aria-current] { opacity: 1; color: #7fd6c7; }
.btn {
  display: inline-block; text-decoration: none; font-weight: 600; font-size: 14px;
  padding: 11px 20px; border-radius: 999px; border: 0; cursor: pointer;
  background: var(--teal); color: var(--white) !important; opacity: 1 !important;
  transition: background .2s;
}
.btn:hover { background: var(--teal-dark); }
.btn-ghost { background: transparent; border: 1px solid rgba(255,255,255,.35); }
.btn-ghost:hover { background: rgba(255,255,255,.08); }
.menu-toggle { display: none; background: none; border: 0; color: var(--white); font-size: 26px; cursor: pointer; }

/* ---------- Hero ---------- */
.hero {
  background: var(--ink); color: var(--white);
  position: relative; overflow: hidden;
  padding: 96px 0 110px;
}
.hero::after {
  /* trama de barras: guiño a los datos */
  content: ""; position: absolute; right: -40px; bottom: 0; width: 46%; height: 78%;
  background:
    linear-gradient(to top, rgba(18,145,127,.55) 38%, transparent 38%) 0 100% / 9% 100% no-repeat,
    linear-gradient(to top, rgba(18,145,127,.40) 52%, transparent 52%) 12% 100% / 9% 100% no-repeat,
    linear-gradient(to top, rgba(18,145,127,.30) 45%, transparent 45%) 24% 100% / 9% 100% no-repeat,
    linear-gradient(to top, rgba(18,145,127,.45) 66%, transparent 66%) 36% 100% / 9% 100% no-repeat,
    linear-gradient(to top, rgba(18,145,127,.35) 58%, transparent 58%) 48% 100% / 9% 100% no-repeat,
    linear-gradient(to top, rgba(18,145,127,.55) 80%, transparent 80%) 60% 100% / 9% 100% no-repeat,
    linear-gradient(to top, rgba(18,145,127,.40) 72%, transparent 72%) 72% 100% / 9% 100% no-repeat,
    linear-gradient(to top, rgba(18,145,127,.65) 94%, transparent 94%) 84% 100% / 9% 100% no-repeat;
  opacity: .5; pointer-events: none;
}
.hero .wrap { position: relative; z-index: 1; }
.eyebrow {
  display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: .16em; text-transform: uppercase;
  color: #7fd6c7; margin-bottom: 18px;
}
.hero h1 {
  font-size: clamp(34px, 5.2vw, 60px); line-height: 1.08; font-weight: 700;
  margin: 0 0 22px; max-width: 14ch; letter-spacing: -.01em;
}
.hero h1 em { font-style: normal; color: #7fd6c7; }
.hero p.lead { font-size: clamp(17px, 2vw, 20px); max-width: 56ch; opacity: .85; margin: 0 0 34px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }

.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; margin-top: 64px; max-width: 720px; border-top: 1px solid rgba(255,255,255,.15); }
.stats div { padding: 18px 20px 0 0; }
.stats strong { display: block; font-size: 15px; color: var(--white); }
.stats span { font-size: 13px; opacity: .65; }

/* ---------- Secciones ---------- */
section { padding: 96px 0; }
.section-head { display: flex; justify-content: space-between; align-items: end; gap: 24px; margin-bottom: 44px; flex-wrap: wrap; }
.section-head h2 { font-size: clamp(28px, 3.4vw, 40px); margin: 0; line-height: 1.15; letter-spacing: -.01em; }
.section-head p { margin: 8px 0 0; color: var(--muted); max-width: 52ch; }
.section-head .eyebrow { color: var(--teal); margin-bottom: 10px; }
.link-arrow { color: var(--teal-dark); font-weight: 600; text-decoration: none; white-space: nowrap; }
.link-arrow:hover { text-decoration: underline; }

/* Servicios */
.services { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.service {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px 24px; transition: transform .2s, box-shadow .2s;
}
.service:hover { transform: translateY(-3px); box-shadow: 0 12px 30px rgba(31,35,43,.08); }
.service .num { font-size: 13px; font-weight: 700; color: var(--teal); letter-spacing: .1em; }
.service h3 { font-size: 19px; margin: 14px 0 10px; line-height: 1.25; }
.service p { margin: 0; color: var(--muted); font-size: 15px; }

.service.highlight { background: var(--ink); color: var(--white); border-color: var(--ink); }
.service.highlight p { color: rgba(255,255,255,.75); }
.service.highlight .num { color: #7fd6c7; }

/* Proyecto destacado */
.project { background: var(--white); border: 1px solid var(--line); border-top: 4px solid var(--teal); border-radius: var(--radius); padding: 36px; display: grid; grid-template-columns: 1.1fr 1.4fr; gap: 40px; }
.badge { display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: .06em; color: var(--teal-dark); background: var(--teal-soft); padding: 6px 12px; border-radius: 999px; margin-bottom: 14px; }
.project-main p { margin: 0 0 14px; font-size: 17px; }
.project-main .muted { color: var(--muted); font-size: 15px; }
.project-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.project h4 { margin: 0 0 12px; font-size: 13px; letter-spacing: .12em; text-transform: uppercase; color: var(--teal-dark); }
.project ul, .project ol { margin: 0; padding: 0; list-style: none; display: grid; gap: 10px; font-size: 15px; }
.project ul li { padding-left: 18px; position: relative; }
.project ul li::before { content: ""; position: absolute; left: 0; top: .6em; width: 7px; height: 7px; border-radius: 2px; background: var(--teal); }
.steps { counter-reset: step; }
.steps li { counter-increment: step; display: flex; gap: 10px; align-items: baseline; }
.steps li::before { content: counter(step); flex: 0 0 22px; height: 22px; border-radius: 50%; background: var(--ink); color: var(--white); font-size: 12px; font-weight: 700; display: grid; place-items: center; }
.antecedentes { list-style: none; padding: 0; margin: 0; columns: 2; column-gap: 40px; }
.antecedentes li { break-inside: avoid; padding: 12px 0 12px 22px; border-bottom: 1px solid var(--line); position: relative; font-size: 15.5px; }
.antecedentes li::before { content: "—"; position: absolute; left: 0; color: var(--teal); font-weight: 700; }

/* Artículos */
.bg-white { background: var(--white); }
.posts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.post-card { display: flex; flex-direction: column; text-decoration: none; border-radius: var(--radius); overflow: hidden; background: var(--paper); border: 1px solid var(--line); transition: transform .2s, box-shadow .2s; }
.post-card:hover { transform: translateY(-3px); box-shadow: 0 14px 34px rgba(31,35,43,.10); }
.post-cover {
  aspect-ratio: 16 / 9; background: var(--ink); color: var(--white); position: relative;
  display: flex; align-items: flex-end; padding: 18px; overflow: hidden;
}
.post-cover .tag { position: relative; z-index: 1; font-size: 11px; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; background: var(--teal); padding: 5px 10px; border-radius: 999px; }
.post-cover svg { position: absolute; inset: 0; width: 100%; height: 100%; }
.post-body { padding: 22px 22px 26px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.post-meta { font-size: 13px; color: var(--muted); }
.post-body h3 { font-size: 20px; line-height: 1.3; margin: 0; }
.post-body p { font-size: 15px; color: var(--muted); margin: 0; }
.post-card.featured { grid-column: span 2; flex-direction: row; }
.post-card.featured .post-cover { aspect-ratio: auto; flex: 1.1; min-height: 300px; }
.post-card.featured .post-body { flex: 1; padding: 34px; justify-content: center; }
.post-card.featured h3 { font-size: 27px; }

.follow-card { background: var(--teal-soft); border-color: #bfdcd6; }
.follow-card .post-body { justify-content: center; padding: 32px 28px; }
.follow-card .eyebrow { color: var(--teal-dark); margin: 0; }

/* Experiencia */
.exp { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.exp div { border-left: 3px solid var(--teal); padding: 6px 0 6px 20px; font-size: 16px; }
.exp strong { display: block; font-size: 17px; margin-bottom: 6px; }
.exp span { color: var(--muted); font-size: 15px; }

/* Equipo */
.team { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.person { display: flex; gap: 20px; align-items: flex-start; background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; }
.avatar { flex: 0 0 64px; height: 64px; border-radius: 50%; background: var(--teal-soft); color: var(--teal-dark); display: grid; place-items: center; font-weight: 700; font-size: 20px; }
.person h3 { margin: 0 0 2px; font-size: 19px; }
.person .role { color: var(--teal-dark); font-weight: 600; font-size: 14px; margin-bottom: 8px; }
.person p { margin: 0; color: var(--muted); font-size: 15px; }

/* Newsletter / redes */
.follow { background: var(--teal-soft); border-radius: var(--radius); padding: 40px; display: grid; grid-template-columns: 1.3fr 1fr; gap: 32px; align-items: center; }
.follow h3 { margin: 0 0 8px; font-size: 24px; }
.follow p { margin: 0; color: var(--muted); }
.follow form { display: flex; gap: 10px; }
.follow input { flex: 1; min-width: 0; padding: 12px 16px; border-radius: 999px; border: 1px solid #bfdcd6; font: inherit; font-size: 15px; background: var(--white); }
.socials { display: flex; gap: 10px; margin-top: 14px; }
.socials a { width: 38px; height: 38px; border-radius: 50%; display: grid; place-items: center; background: var(--white); color: var(--ink); border: 1px solid #bfdcd6; }
.socials a:hover { background: var(--teal); color: var(--white); border-color: var(--teal); }
.socials svg { width: 18px; height: 18px; fill: currentColor; }

/* Contacto */
.contact { background: var(--ink); color: var(--white); }
.contact .grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 56px; align-items: start; }
.contact h2 { font-size: clamp(28px, 3.4vw, 40px); margin: 0 0 16px; line-height: 1.15; }
.contact p { opacity: .8; }
.contact form { background: var(--ink-2); border-radius: var(--radius); padding: 30px; display: grid; gap: 14px; }
.contact label { font-size: 13px; font-weight: 600; opacity: .8; display: grid; gap: 6px; }
.contact input, .contact textarea, .contact select {
  font: inherit; font-size: 15px; padding: 12px 14px; border-radius: 10px;
  border: 1px solid rgba(255,255,255,.14); background: rgba(255,255,255,.04); color: var(--white);
}
.contact select option { color: var(--text); }
.contact textarea { min-height: 120px; resize: vertical; }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }

footer { background: #171a20; color: rgba(255,255,255,.6); font-size: 14px; padding: 36px 0; }
footer .wrap { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; align-items: center; }
footer a { text-decoration: none; }
footer a:hover { color: var(--white); }

/* ---------- Página de artículo ---------- */
.article-hero { background: var(--ink); color: var(--white); padding: 72px 0 64px; }
.article-hero .wrap, .article .wrap { max-width: 760px; }
.crumbs { font-size: 14px; opacity: .7; margin-bottom: 22px; }
.crumbs a { text-decoration: none; }
.crumbs a:hover { text-decoration: underline; }
.article-hero h1 { font-size: clamp(30px, 4.4vw, 46px); line-height: 1.12; margin: 14px 0 18px; letter-spacing: -.01em; }
.article-hero .dek { font-family: var(--serif); font-size: 20px; opacity: .85; margin: 0 0 26px; }
.byline { display: flex; align-items: center; gap: 12px; font-size: 14px; }
.byline .avatar { flex-basis: 40px; height: 40px; font-size: 14px; }
.byline span { opacity: .7; }
.article { padding: 56px 0 80px; background: var(--white); }
.prose { font-family: var(--serif); font-size: 19px; line-height: 1.75; color: #2b2f37; }
.prose h2 { font-family: var(--sans); font-size: 26px; margin: 44px 0 12px; color: var(--text); line-height: 1.25; }
.prose ul, .prose ol { padding-left: 1.3em; }
.prose li { margin-bottom: 8px; }
.prose blockquote { margin: 32px 0; padding: 4px 0 4px 24px; border-left: 4px solid var(--teal); font-style: italic; font-size: 21px; color: var(--ink); }
.prose figure { margin: 36px 0; }
.prose figcaption { font-family: var(--sans); font-size: 14px; color: var(--muted); margin-top: 10px; }
.callout { font-family: var(--sans); font-size: 16px; background: var(--teal-soft); border-radius: 12px; padding: 18px 22px; margin: 32px 0; }
.share { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; border-top: 1px solid var(--line); margin-top: 48px; padding-top: 24px; font-family: var(--sans); font-size: 14px; }
.share a { text-decoration: none; border: 1px solid var(--line); border-radius: 999px; padding: 7px 14px; }
.share a:hover { border-color: var(--teal); color: var(--teal-dark); }

/* Listado */
.filters { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 32px; }
.chip { font: inherit; font-size: 14px; font-weight: 600; padding: 8px 16px; border-radius: 999px; border: 1px solid var(--line); background: var(--white); cursor: pointer; color: var(--text); }
.chip[aria-pressed="true"] { background: var(--ink); color: var(--white); border-color: var(--ink); }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .services { grid-template-columns: repeat(2, 1fr); }
  .project { grid-template-columns: 1fr; }
  .posts { grid-template-columns: repeat(2, 1fr); }
  .post-card.featured { grid-column: span 2; }
  .exp { grid-template-columns: 1fr; }
  .contact .grid, .follow { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  section { padding: 64px 0; }
  .wrap { padding: 0 16px; }
  .menu-toggle { display: block; }
  .nav-links { display: none; position: absolute; top: 68px; left: 0; right: 0; background: var(--ink); flex-direction: column; align-items: flex-start; padding: 16px 16px 24px; gap: 18px; }
  .nav-links.open { display: flex; }
  .hero { padding: 64px 0 80px; }
  .hero::after { width: 90%; opacity: .25; }
  .stats { grid-template-columns: 1fr; }
  .services, .posts, .team, .project-cols { grid-template-columns: 1fr; }
  .project { padding: 24px 20px; }
  .antecedentes { columns: 1; }
  .post-card.featured { grid-column: auto; flex-direction: column; }
  .post-card.featured .post-cover { min-height: 0; aspect-ratio: 16/9; }
  .post-card.featured .post-body { padding: 22px; }
  .follow { padding: 28px 20px; }
  .follow form { flex-direction: column; }
  .row2 { grid-template-columns: 1fr; }
  .person { flex-direction: column; }
  .prose { font-size: 18px; }
}