/* ===================================================================
   Investigación de Mercado y Opinión Pública — UCES Rafaela
   Sistema de diseño — hoja de estilos principal
   =================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Source+Serif+4:opsz,wght@8..60,500;8..60,600;8..60,700&family=Inter:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root{
  /* Color — tinta académica sobre papel, con verde institucional (heredado
     de las calculadoras de la cátedra) y un acento mostaza para datos */
  --bg:            #F7F7F3;
  --bg-alt:        #EFF0EA;
  --ink:           #14201C;
  --ink-soft:      #4C5A55;
  --ink-faint:     #8C978F;
  --line:          #DBDED2;
  --line-strong:   #C3C8B8;
  --primary:       #0F6B52;
  --primary-dark:  #0A4E3B;
  --primary-tint:  #E4EFE9;
  --accent:        #C08A28;
  --accent-tint:   #F5E9D3;
  --white:         #FFFFFF;

  /* Tipografía */
  --font-display: 'Source Serif 4', Georgia, 'Times New Roman', serif;
  --font-body:    'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --font-mono:    'IBM Plex Mono', 'SFMono-Regular', Consolas, monospace;

  /* Escala de espaciado */
  --sp-1: 0.4rem;
  --sp-2: 0.8rem;
  --sp-3: 1.2rem;
  --sp-4: 1.8rem;
  --sp-5: 2.6rem;
  --sp-6: 4rem;
  --sp-7: 6rem;

  --radius: 6px;
  --max: 1180px;
}

*, *::before, *::after{ box-sizing: border-box; }

html{ scroll-behavior: smooth; }

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

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

a{ color: var(--primary); text-decoration: none; }
a:hover{ color: var(--primary-dark); }

h1,h2,h3,h4{
  font-family: var(--font-display);
  color: var(--ink);
  line-height: 1.15;
  font-weight: 600;
  margin: 0 0 var(--sp-3);
  letter-spacing: -0.01em;
}

h1{ font-size: clamp(2.1rem, 4vw, 3.1rem); }
h2{ font-size: clamp(1.5rem, 2.6vw, 2rem); }
h3{ font-size: 1.15rem; font-weight: 600; }

p{ margin: 0 0 var(--sp-3); color: var(--ink-soft); }

.container{
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--sp-4);
}

/* -------- Etiquetas / eyebrows -------- */
.eyebrow{
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: var(--sp-2);
}
.eyebrow::before{
  content: "";
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--accent);
  display: inline-block;
}

/* ===================== HEADER / NAV ===================== */
.site-header{
  background: var(--white);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 50;
}
.primary-header .container{
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--sp-3);
  padding-bottom: var(--sp-3);
  gap: var(--sp-4);
}
#branding{
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
}
#branding img{ width: 100px; height: auto; }
#branding .brand-text{ display:flex; flex-direction: column; line-height: 1.2; }
#branding .brand-eyebrow{
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
#branding .site-title{
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--ink);
  margin: 0;
}

.main-navigation .menu{
  list-style: none;
  display: flex;
  gap: var(--sp-5);
  margin: 0; padding: 0;
}
.main-navigation .menu a{
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--ink-soft);
  padding: 6px 2px;
  border-bottom: 2px solid transparent;
  transition: color .15s ease, border-color .15s ease;
}
.main-navigation .menu a:hover{ color: var(--primary); }
.menu-item.current-menu-item a{
  color: var(--ink);
  border-bottom-color: var(--accent);
}

.menu-toggle{
  display: none;
  background: none;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  width: 40px; height: 40px;
  align-items: center;
  justify-content: center;
  color: var(--ink);
  cursor: pointer;
}

@media (max-width: 860px){
  .menu-toggle{ display: inline-flex; }
  .main-navigation .menu{
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: var(--white);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    gap: 0;
    padding: var(--sp-2) var(--sp-4) var(--sp-4);
    display: none;
  }
  .main-navigation .menu.is-open{ display: flex; }
  .main-navigation .menu li{ border-top: 1px solid var(--line); }
  .main-navigation .menu li:first-child{ border-top: none; }
  .main-navigation .menu a{ display: block; padding: var(--sp-2) 0; }
}

/* ===================== HERO (home) ===================== */
.home-hero{
  position: relative;
  overflow: hidden;
  background: var(--bg-alt);
  border-bottom: 1px solid var(--line);
}
.home-hero .container{
  position: relative;
  z-index: 2;
  padding-top: var(--sp-7);
  padding-bottom: var(--sp-7);
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--sp-6);
  align-items: center;
}
.home-hero h1{ margin-bottom: var(--sp-3); }
.home-hero .lede{
  font-size: 1.08rem;
  max-width: 46ch;
  color: var(--ink-soft);
}
.hero-actions{ display: flex; gap: var(--sp-3); margin-top: var(--sp-4); flex-wrap: wrap; }

/* dot-grid "muestra" signature — puntos = población, acento = la muestra */
.sample-motif{
  --dot: #C6CDBF;
  position: relative;
  width: 100%;
  aspect-ratio: 1 / 1;
  max-width: 420px;
  justify-self: center;
}
.sample-motif svg{ width: 100%; height: 100%; display: block; }

@media (max-width: 860px){
  .home-hero .container{ grid-template-columns: 1fr; text-align: left; }
  .sample-motif{ max-width: 260px; margin-top: var(--sp-4); }
}

/* ===================== Inner page title band ===================== */
.page-title{
  background: var(--bg-alt);
  border-bottom: 1px solid var(--line);
  padding: var(--sp-6) 0 var(--sp-5);
}
.page-title .eyebrow{ margin-bottom: var(--sp-2); }
.page-title h2{ margin: 0; }

/* ===================== Buttons ===================== */
.button{
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.9rem;
  padding: 12px 22px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all .15s ease;
}
.button.primary{
  background: var(--primary);
  color: var(--white);
}
.button.primary:hover{ background: var(--primary-dark); color: var(--white); }
.button.ghost{
  background: transparent;
  border-color: var(--line-strong);
  color: var(--ink);
}
.button.ghost:hover{ border-color: var(--primary); color: var(--primary); }

/* ===================== Layout helpers ===================== */
.main-content{ background: var(--bg); }
.fullwidth-block{ padding: var(--sp-7) 0; }
.fullwidth-block.tight{ padding: var(--sp-6) 0; }
.section-title{
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: var(--sp-5);
}
.section-title .num{
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
}

.grid-3{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-5);
}
.grid-2{
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--sp-5);
}
@media (max-width: 900px){
  .grid-3, .grid-2{ grid-template-columns: 1fr; }
}

/* ===================== Cards ===================== */
.card{
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: var(--sp-4);
  transition: border-color .15s ease, transform .15s ease, box-shadow .15s ease;
}
.card:hover{
  border-color: var(--line-strong);
  transform: translateY(-2px);
  box-shadow: 0 12px 24px -16px rgba(20,32,28,0.25);
}
.card h3{ margin-bottom: var(--sp-2); }
.card .card-eyebrow{
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: var(--sp-2);
  display: block;
}

ul.posts{ list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: var(--sp-3); }
ul.posts .post{
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: var(--sp-3) var(--sp-4);
  background: var(--white);
}
ul.posts .post h3.entry-title{ font-size: 0.98rem; margin-bottom: 6px; }
ul.posts .post .date{
  display: block;
  font-size: 0.86rem;
}
ul.posts .post .date + .date{ margin-top: 4px; }
ul.posts .post .date a{ color: var(--ink-soft); }
ul.posts .post .date a:hover{ color: var(--primary); }

/* ===================== Equipo / sidebar list ===================== */
ul.courses{ list-style: none; margin: 0 0 var(--sp-4); padding: 0; display: flex; flex-direction: column; gap: var(--sp-3); }
ul.courses li{ border-bottom: 1px solid var(--line); padding-bottom: var(--sp-3); }
ul.courses li:last-child{ border-bottom: none; }
ul.courses .course-title{ font-size: 1rem; margin-bottom: 4px; }
ul.courses .course-meta .date{ display:block; font-size: 0.85rem; color: var(--ink-soft); }
ul.courses a{ font-size: 0.9rem; }

/* ===================== Acordeón (biblioteca / publicaciones) ===================== */
.accordion-group{ display: flex; flex-direction: column; gap: var(--sp-2); }
.accordion-item{
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  overflow: hidden;
}
.accordion-toggle{
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
  padding: var(--sp-3) var(--sp-4);
  cursor: pointer;
  background: var(--white);
  border: none;
  text-align: left;
  font-family: var(--font-body);
}
.accordion-toggle:hover{ background: var(--bg-alt); }
.accordion-toggle h3{ margin: 0; font-size: 0.98rem; flex: 1; }
.accordion-meta{ display: flex; gap: var(--sp-3); flex-shrink: 0; }
.accordion-meta span{
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--ink-faint);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.accordion-chevron{
  width: 18px; height: 18px;
  flex-shrink: 0;
  color: var(--ink-faint);
  transition: transform .2s ease;
}
.accordion-item.is-open .accordion-chevron{ transform: rotate(180deg); }
.accordion-content{
  max-height: 0;
  overflow: hidden;
  transition: max-height .25s ease;
  border-top: 1px solid transparent;
}
.accordion-item.is-open .accordion-content{ border-top-color: var(--line); }
.accordion-content-inner{ padding: var(--sp-3) var(--sp-4) var(--sp-4); }
.accordion-content-inner p{ margin: 0 0 var(--sp-2); font-size: 0.94rem; }
.accordion-content-inner a.dl-link{
  font-weight: 600;
  font-size: 0.88rem;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.accordion-intro{
  color: var(--ink-soft);
  max-width: 74ch;
  margin-bottom: var(--sp-5);
}

/* ===================== Listas de recursos con link-out (biblioteca) ===================== */
ul.resource-list{ list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 2px; }
ul.resource-list li a{
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 4px;
  font-size: 0.92rem;
  color: var(--ink);
  border-bottom: 1px solid var(--line);
}
ul.resource-list li:last-child a{ border-bottom: none; }
ul.resource-list li a:hover{ color: var(--primary); }
ul.resource-list li a::before{
  content: "→";
  color: var(--accent);
  font-family: var(--font-mono);
  flex-shrink: 0;
}
ul.resource-list li a .res-note{
  color: var(--ink-faint);
  font-size: 0.82rem;
  margin-left: auto;
  font-family: var(--font-mono);
  flex-shrink: 0;
}

/* ===================== Herramientas (tools page) ===================== */
.tool-card{
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.tool-card .tool-band{
  height: 6px;
}
.tool-card.tool-teal .tool-band{ background: var(--primary); }
.tool-card.tool-navy .tool-band{ background: #1e2a3e; }
.tool-card .tool-body{ padding: var(--sp-4); flex: 1; display:flex; flex-direction: column; }
.tool-card .tool-tag{
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: var(--sp-2);
}
.tool-card p{ flex: 1; }
.tool-card .button{ align-self: flex-start; margin-top: var(--sp-2); }

/* ===================== Sidebar aside ===================== */
aside.sidebar h2{ font-size: 1.2rem; }
aside.sidebar{ }
.sidebar-block + .sidebar-block{ margin-top: var(--sp-5); padding-top: var(--sp-5); border-top: 1px solid var(--line); }
.contact-block{
  background: var(--bg-alt);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: var(--sp-4);
  font-size: 0.92rem;
}
.contact-block b{ display:block; margin-bottom: var(--sp-2); font-family: var(--font-display); font-size: 1.02rem; }
.contact-block a{ font-weight: 600; }

/* ===================== Two-column content layout ===================== */
.content-layout{
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: var(--sp-6);
  align-items: start;
}
@media (max-width: 900px){
  .content-layout{ grid-template-columns: 1fr; }
}

/* ===================== Footer ===================== */
.site-footer{
  background: var(--ink);
  color: #C9D2CB;
  padding: var(--sp-5) 0;
  margin-top: var(--sp-7);
}
.site-footer .container{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
  flex-wrap: wrap;
}
.site-footer .copy{ font-size: 0.82rem; color: #9AA79F; max-width: 60ch; }
.site-footer .foot-links{ display: flex; gap: var(--sp-4); }
.site-footer .foot-links a{ color: #C9D2CB; font-size: 0.85rem; }
.site-footer .foot-links a:hover{ color: var(--white); }

/* ===================== Utility ===================== */
.text-center{ text-align: center; }
.mt-0{ margin-top: 0; }
.small{ font-size: 0.85rem; color: var(--ink-faint); }

/* Back-to-site link used on embedded tool pages */
.tool-return-bar{
  background: var(--ink);
  color: #C9D2CB;
  font-family: var(--font-mono);
  font-size: 0.8rem;
}
.tool-return-bar a{
  color: #C9D2CB;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px var(--sp-4);
}
.tool-return-bar a:hover{ color: var(--white); }

/* ===================== Contacto: mapa, formulario, ficha ===================== */
.map-frame{
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: var(--sp-6);
  line-height: 0;
}
.map-frame iframe{ display: block; width: 100%; }

.contact-form p{ margin-bottom: var(--sp-4); }
.contact-form label{
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 8px;
}
.contact-form .control{ display: block; }
.contact-form input[type="text"],
.contact-form input[type="email"],
.contact-form textarea{
  width: 100%;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--ink);
  background: var(--white);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 12px 14px;
}
.contact-form input:focus,
.contact-form textarea:focus{
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-tint);
}
.contact-form textarea{ min-height: 140px; resize: vertical; }
.contact-form .text-right{ text-align: right; }
.contact-form input[type="submit"]{
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.9rem;
  background: var(--primary);
  color: var(--white);
  border: 1px solid transparent;
  border-radius: var(--radius);
  padding: 12px 26px;
  cursor: pointer;
  transition: background .15s ease;
}
.contact-form input[type="submit"]:hover{ background: var(--primary-dark); }

.contact-info address{ font-style: normal; }
.contact-info strong{
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 6px;
}
.contact-info .contact + .contact,
.contact-info address + .contact{ margin-top: var(--sp-4); }
.contact-info p{ margin-bottom: var(--sp-4); }
.contact-info a{ display: block; color: var(--ink); font-weight: 500; }
.contact-info a:hover{ color: var(--primary); }

.form-result{
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: var(--sp-5);
  text-align: center;
  background: var(--white);
}
.form-result.ok{ border-color: var(--primary); background: var(--primary-tint); }
.form-result.error{ border-color: var(--accent); background: var(--accent-tint); }
.form-result h2{ font-size: 1.3rem; margin-bottom: var(--sp-2); }
.form-result .icon{
  width: 46px; height: 46px;
  margin: 0 auto var(--sp-3);
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
}
.form-result.ok .icon{ background: var(--primary); color: var(--white); }
.form-result.error .icon{ background: var(--accent); color: var(--white); }

/* Focus visibility */
a:focus-visible, button:focus-visible{
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce){
  *{ animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}