/* =========================================================
   TecnoSítate — hoja de estilos principal
   Paleta: azules + blancos, editorial, poco futurista.
   ========================================================= */

:root{
  /* Color */
  --white:        #ffffff;
  --paper:        #f5f8fc;      /* fondo general, azul casi blanco */
  --paper-dim:    #eef2f9;      /* fondo de tarjetas/secciones */
  --line:         #dbe3ee;      /* bordes finos */
  --ink:          #101826;      /* texto principal */
  --ink-soft:     #48566b;      /* texto secundario */
  --blue:         #1d5fd6;      /* azul de acento — botones, enlaces */
  --blue-dark:    #123c8c;      /* azul oscuro — hover, headers */
  --blue-pale:    #e5edfc;      /* azul muy claro — chips, fondos */
  --focus:        #ff9f1c;      /* foco de teclado, alto contraste a propósito */

  /* Tipografía */
  --font-display: "Sora", "Segoe UI", system-ui, sans-serif;
  --font-body:    "Source Serif 4", Georgia, "Times New Roman", serif;
  --font-mono:    "IBM Plex Mono", "SFMono-Regular", Menlo, monospace;

  /* Espaciado y forma */
  --radius: 10px;
  --radius-sm: 6px;
  --shadow: 0 1px 2px rgba(16,24,38,.04), 0 6px 20px rgba(16,24,38,.06);
  --maxw: 1180px;
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:15px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{ max-width:100%; display:block; }
a{ color:var(--blue); text-decoration:none; }
a:hover{ text-decoration:underline; }
:focus-visible{ outline:3px solid var(--focus); outline-offset:2px; }

h1,h2,h3,h4{
  font-family:var(--font-display);
  color:var(--ink);
  line-height:1.25;
  font-weight:700;
  margin:0 0 .5em;
}
h1{ font-size:clamp(1.6rem,3.2vw,2.2rem); letter-spacing:-.01em; }
h2{ font-size:1.25rem; }
h3{ font-size:1.02rem; }
p{ margin:0 0 1em; }
ul,ol{ margin:0 0 1em; padding-left:1.2em; }
li{ margin-bottom:.35em; }

.container{ max-width:var(--maxw); margin:0 auto; padding:0 20px; }
.eyebrow{
  font-family:var(--font-mono);
  font-size:.72rem;
  text-transform:uppercase;
  letter-spacing:.09em;
  color:var(--blue);
  display:inline-flex;
  align-items:center;
  gap:.4em;
}
.eyebrow::before{ content:"#"; opacity:.6; }

/* ---------- Header ---------- */
.site-header{
  position:sticky; top:0; z-index:40;
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(180%) blur(8px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex; align-items:center; gap:20px;
  padding:10px 20px;
}
.logo{
  font-family:var(--font-display);
  font-weight:800;
  font-size:1.1rem;
  color:var(--ink);
  display:flex; align-items:center; gap:7px;
  white-space:nowrap;
}
.logo span{ color:var(--blue); }
.logo-mark{ width:24px; height:24px; flex:none; }

.main-nav{ display:flex; gap:2px; margin-left:6px; flex-wrap:wrap; }
.main-nav a{
  color:var(--ink-soft); font-family:var(--font-display); font-size:.82rem;
  font-weight:600; padding:6px 9px; border-radius:var(--radius-sm);
}
.main-nav a:hover, .main-nav a.active{ color:var(--blue); background:var(--blue-pale); text-decoration:none; }

.header-search{ margin-left:auto; flex:none; }
.search-box{
  display:flex; align-items:center; gap:6px;
  border:1px solid var(--line); background:var(--paper-dim);
  border-radius:999px; padding:5px 6px 5px 12px;
  min-width:190px;
}
.search-box input{
  border:0; background:transparent; outline:none;
  font-family:var(--font-body); font-size:.85rem; width:100%; color:var(--ink);
}
.search-box button{
  border:0; background:var(--blue); color:#fff; width:26px; height:26px;
  border-radius:999px; display:flex; align-items:center; justify-content:center; cursor:pointer; flex:none;
}
.nav-toggle{ display:none; margin-left:auto; background:none; border:1px solid var(--line); border-radius:var(--radius-sm); padding:6px 9px; cursor:pointer; font-size:.85rem; }

/* Dropdown de categorías en el menú */
.nav-dropdown{ position:relative; }
.nav-dropdown-toggle{
  display:flex; align-items:center; gap:5px;
  color:var(--ink-soft); font-family:var(--font-display); font-size:.82rem;
  font-weight:600; padding:6px 9px; border-radius:var(--radius-sm);
  background:none; border:0; cursor:pointer;
}
.nav-dropdown-toggle:hover{ color:var(--blue); background:var(--blue-pale); }
.nav-dropdown-panel{
  display:none; position:absolute; top:calc(100% + 6px); left:0; z-index:50;
  background:#fff; border:1px solid var(--line); border-radius:var(--radius);
  box-shadow:var(--shadow); padding:8px; min-width:220px;
  grid-template-columns:1fr 1fr; gap:2px;
}
.nav-dropdown-panel.open{ display:grid; }
.nav-dropdown-panel a{
  display:flex; align-items:center; gap:8px; padding:7px 8px; border-radius:var(--radius-sm);
  color:var(--ink); font-family:var(--font-display); font-size:.78rem; font-weight:600;
}
.nav-dropdown-panel a:hover{ background:var(--blue-pale); color:var(--blue); text-decoration:none; }
.nav-dropdown-panel a svg{ width:15px; height:15px; flex:none; color:var(--blue); }
.nav-dropdown-all{ grid-column:1 / -1; justify-content:center; color:var(--blue) !important; border-top:1px solid var(--line); margin-top:4px; padding-top:9px !important; }
@media (max-width:900px){
  .nav-dropdown-panel{ position:static; display:grid; grid-template-columns:1fr 1fr; box-shadow:none; border:0; padding:4px 0; }
  .nav-dropdown-toggle{ width:100%; justify-content:space-between; }
}

@media (max-width: 900px){
  .main-nav{ display:none; width:100%; order:3; flex-direction:column; gap:2px; }
  .main-nav.open{ display:flex; }
  .main-nav a{ padding:10px 6px; border-bottom:1px solid var(--line); border-radius:0; }
  .header-search{ order:2; margin-left:0; width:100%; }
  .search-box{ width:100%; }
  .nav-toggle{ display:block; order:1; }
  .header-inner{ flex-wrap:wrap; }
  .logo{ order:0; }
}

/* ---------- Hero / Home ---------- */
.hero{ padding:38px 0 28px; border-bottom:1px solid var(--line); background:var(--white); }
.hero-grid{ display:grid; grid-template-columns:1.1fr .9fr; gap:32px; align-items:center; }
.hero h1{ margin-bottom:.35em; }
.hero p.lead{ font-size:1rem; color:var(--ink-soft); max-width:52ch; }
.hero-actions{ display:flex; gap:10px; margin-top:16px; flex-wrap:wrap; }
@media (max-width: 860px){ .hero-grid{ grid-template-columns:1fr; } }

.btn{
  display:inline-flex; align-items:center; gap:7px;
  font-family:var(--font-display); font-weight:700; font-size:.85rem;
  padding:9px 17px; border-radius:999px; border:1px solid transparent; cursor:pointer;
}
.btn-primary{ background:var(--blue); color:#fff; }
.btn-primary:hover{ background:var(--blue-dark); text-decoration:none; }
.btn-ghost{ background:transparent; border-color:var(--line); color:var(--ink); }
.btn-ghost:hover{ border-color:var(--blue); color:var(--blue); text-decoration:none; }

/* ---------- Sections ---------- */
.section{ padding:34px 0; }
.section-head{ display:flex; align-items:baseline; justify-content:space-between; gap:20px; margin-bottom:18px; flex-wrap:wrap; }
.section-head h2{ margin:0; }
.section-head .see-all{ font-family:var(--font-display); font-weight:700; font-size:.82rem; }

/* ---------- Category chips ---------- */
.cat-grid{ display:grid; grid-template-columns:repeat(5,1fr); gap:11px; }
@media (max-width:900px){ .cat-grid{ grid-template-columns:repeat(3,1fr); } }
@media (max-width:600px){ .cat-grid{ grid-template-columns:repeat(2,1fr); } }
.cat-card{
  background:var(--white); border:1px solid var(--line); border-radius:var(--radius);
  padding:14px 12px; text-align:center; color:var(--ink); transition:border-color .15s, transform .15s;
}
.cat-card:hover{ border-color:var(--blue); transform:translateY(-2px); text-decoration:none; }
.cat-card svg{ width:24px; height:24px; margin:0 auto 8px; }
.cat-card .name{ font-family:var(--font-display); font-weight:700; font-size:.8rem; display:block; }
.cat-card .count{ font-family:var(--font-mono); font-size:.68rem; color:var(--ink-soft); }

/* ---------- Article cards ---------- */
.card-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:16px; }
@media (max-width:960px){ .card-grid{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:620px){ .card-grid{ grid-template-columns:1fr; } }

.card{
  background:var(--white); border:1px solid var(--line); border-radius:var(--radius);
  overflow:hidden; display:flex; flex-direction:column; box-shadow:var(--shadow);
  transition:transform .15s, box-shadow .15s;
}
.card:hover{ transform:translateY(-3px); box-shadow:0 4px 8px rgba(16,24,38,.06),0 14px 30px rgba(16,24,38,.09); }
.card-img{ position:relative; aspect-ratio:16/10; background:var(--blue-pale); display:flex; align-items:center; justify-content:center; overflow:hidden; }
.card-img img{ position:absolute; inset:0; width:100%; height:100%; object-fit:cover; }
.card-img svg{ width:48%; height:48%; }
.card-body{ padding:13px 15px 16px; display:flex; flex-direction:column; flex:1; }
.card .cat-tag{
  font-family:var(--font-mono); font-size:.66rem; text-transform:uppercase; letter-spacing:.06em;
  color:var(--blue); margin-bottom:6px; display:inline-block;
}
.card h3{ margin-bottom:6px; font-size:.98rem; }
.card h3 a{ color:var(--ink); }
.card h3 a:hover{ color:var(--blue); text-decoration:none; }
.card p{ color:var(--ink-soft); font-size:.85rem; margin-bottom:12px; flex:1; }
.card .read-more{ font-family:var(--font-display); font-weight:700; font-size:.8rem; }

/* ---------- Article page ---------- */
.article-head{ background:var(--white); border-bottom:1px solid var(--line); padding:26px 0 20px; }
.breadcrumbs{ font-family:var(--font-mono); font-size:.72rem; color:var(--ink-soft); margin-bottom:12px; }
.breadcrumbs a{ color:var(--ink-soft); }
.article-meta{ display:flex; gap:12px; align-items:center; flex-wrap:wrap; margin-top:12px; color:var(--ink-soft); font-size:.8rem; font-family:var(--font-mono); }
.article-hero-img{ position:relative; background:var(--blue-pale); border-radius:var(--radius); margin:20px 0; display:flex; align-items:center; justify-content:center; aspect-ratio:21/9; overflow:hidden; }
.article-hero-img img{ position:absolute; inset:0; width:100%; height:100%; object-fit:cover; }
.article-hero-img svg{ width:30%; }

.article-body{ max-width:74ch; font-size:.95rem; }
.article-body h2{ margin-top:1.5em; font-size:1.2rem; }
.article-body h3{ margin-top:1.2em; font-size:1rem; }
.article-body table{ width:100%; border-collapse:collapse; margin:1.1em 0; font-family:var(--font-body); font-size:.88rem; }
.article-body th,.article-body td{ border:1px solid var(--line); padding:7px 10px; text-align:left; }
.article-body th{ background:var(--paper-dim); font-family:var(--font-display); font-size:.78rem; }
.article-body blockquote{
  margin:1.3em 0; padding:12px 16px; background:var(--blue-pale); border-left:4px solid var(--blue);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0; font-style:italic; color:var(--ink); font-size:.93rem;
}
.article-body .tip{
  background:var(--paper-dim); border:1px solid var(--line); border-radius:var(--radius);
  padding:12px 16px; margin:1.3em 0; font-family:var(--font-body); font-size:.88rem;
}
.article-body .tip strong{ font-family:var(--font-display); color:var(--blue-dark); }

.article-layout{ display:grid; grid-template-columns:1fr 240px; gap:36px; align-items:start; }
@media (max-width:960px){ .article-layout{ grid-template-columns:1fr; } }
.side-box{ background:var(--white); border:1px solid var(--line); border-radius:var(--radius); padding:15px; }
.side-box h4{ font-size:.86rem; margin-bottom:10px; }
.side-box ul{ list-style:none; padding:0; margin:0; }
.side-box li{ margin-bottom:9px; padding-bottom:9px; border-bottom:1px solid var(--line); font-size:.84rem; }
.side-box li:last-child{ border-bottom:0; margin-bottom:0; padding-bottom:0; }
.side-box li a{ color:var(--ink); font-weight:600; }
.side-box li .side-cat{ display:block; font-family:var(--font-mono); font-size:.66rem; color:var(--blue); margin-top:2px; }

.related{ margin-top:40px; padding-top:26px; border-top:1px solid var(--line); }

/* ---------- Fuentes ---------- */
.sources-box{ margin-top:2em; padding:14px 16px; background:var(--paper-dim); border:1px solid var(--line); border-radius:var(--radius); }
.sources-box h4{ font-size:.82rem; text-transform:uppercase; letter-spacing:.05em; color:var(--ink-soft); margin-bottom:8px; }
.sources-box ul{ list-style:none; padding:0; margin:0; }
.sources-box li{ margin-bottom:4px; font-size:.85rem; }
.sources-box a{ color:var(--blue); }

/* ---------- Paginador anterior/siguiente ---------- */
.article-pager{ display:grid; grid-template-columns:1fr 1fr; gap:14px; margin:30px 0 0; }
@media (max-width:700px){ .article-pager{ grid-template-columns:1fr; } }
.pager-link{ display:flex; flex-direction:column; gap:4px; padding:14px 16px; background:var(--white); border:1px solid var(--line); border-radius:var(--radius); color:var(--ink); }
.pager-link:hover{ border-color:var(--blue); text-decoration:none; }
.pager-next{ text-align:right; align-items:flex-end; }
.pager-label{ font-family:var(--font-mono); font-size:.7rem; color:var(--blue); text-transform:uppercase; letter-spacing:.04em; }
.pager-title{ font-family:var(--font-display); font-weight:700; font-size:.88rem; }

/* ---------- Espacio reservado para publicidad (a rellenar con AdSense) ---------- */
.ad-slot{
  margin-top:16px; padding:22px 12px; text-align:center; border:1px dashed #c7d3e6;
  border-radius:var(--radius-sm); background:repeating-linear-gradient(45deg,#f5f8fc,#f5f8fc 8px,#eef2f9 8px,#eef2f9 16px);
  color:var(--ink-soft); font-family:var(--font-mono); font-size:.72rem; text-transform:uppercase; letter-spacing:.04em;
}

/* ---------- Footer ---------- */
.site-footer{ background:var(--ink); color:#c9d3e2; margin-top:44px; font-size:.88rem; }
.footer-grid{ display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr; gap:24px; padding:36px 0 20px; }
@media (max-width:800px){ .footer-grid{ grid-template-columns:1fr 1fr; } }
.site-footer h4{ color:#fff; font-size:.86rem; margin-bottom:11px; }
.site-footer a{ color:#c9d3e2; }
.site-footer a:hover{ color:#fff; }
.site-footer ul{ list-style:none; padding:0; margin:0; }
.site-footer li{ margin-bottom:6px; font-size:.82rem; }
.footer-bottom{ border-top:1px solid #29344a; padding:14px 0; font-size:.76rem; color:#8896ac; display:flex; justify-content:space-between; flex-wrap:wrap; gap:8px; }
.footer-logo{ font-family:var(--font-display); font-weight:800; color:#fff; font-size:1.05rem; margin-bottom:8px; display:block; }

/* ---------- Misc pages ---------- */
.page-head{ padding:40px 0 10px; }
.page-head p.lead{ color:var(--ink-soft); max-width:70ch; font-size:1.05rem; }
.legal-body{ max-width:74ch; }
.legal-body h2{ margin-top:1.4em; }
.placeholder{ background:#fff8e6; border:1px dashed #e0b13a; color:#7a5b06; padding:2px 6px; border-radius:4px; font-family:var(--font-mono); font-size:.85em; }

.filters{ display:flex; gap:8px; flex-wrap:wrap; margin-bottom:26px; }
.filter-chip{
  font-family:var(--font-mono); font-size:.8rem; padding:7px 14px; border-radius:999px;
  border:1px solid var(--line); background:#fff; color:var(--ink-soft); cursor:pointer;
}
.filter-chip.active, .filter-chip:hover{ border-color:var(--blue); color:var(--blue); }

.empty-state{ text-align:left; padding:12px 16px; color:var(--ink-soft); background:var(--blue-pale); border:1px solid var(--line); border-radius:var(--radius); margin-bottom:18px; font-size:.9rem; }
.empty-state strong{ color:var(--ink); }

.pagination{ display:flex; gap:8px; justify-content:center; margin-top:34px; }
.pagination button{
  border:1px solid var(--line); background:#fff; padding:8px 14px; border-radius:var(--radius-sm);
  font-family:var(--font-mono); cursor:pointer;
}
.pagination button.active{ background:var(--blue); color:#fff; border-color:var(--blue); }
.pagination button:disabled{ opacity:.4; cursor:default; }

/* ---------- Tira rápida de categorías ---------- */
.cat-strip{ display:flex; gap:6px; overflow-x:auto; padding:12px 20px; background:var(--white); border-bottom:1px solid var(--line); max-width:none; }
.cat-strip-item{
  display:flex; align-items:center; gap:6px; white-space:nowrap; flex:none;
  font-family:var(--font-display); font-weight:600; font-size:.78rem; color:var(--ink-soft);
  padding:6px 12px; border-radius:999px; border:1px solid var(--line);
}
.cat-strip-item:hover{ color:var(--blue); border-color:var(--blue); text-decoration:none; }
.cat-strip-item svg{ width:14px; height:14px; }
.section-head-icon{ width:18px; height:18px; vertical-align:-3px; margin-right:2px; color:var(--blue); }

/* ---------- Grid destacado tipo revista ---------- */
.feature-grid{ display:grid; grid-template-columns:1.5fr 1fr; gap:16px; align-items:stretch; }
@media (max-width:860px){ .feature-grid{ grid-template-columns:1fr; } }
.card--featured .card-img{ aspect-ratio:16/9; }
.card--featured .card-img svg{ width:34%; height:34%; }
.card--featured h2{ font-size:1.3rem; margin-bottom:8px; }
.card--featured p{ font-size:.9rem; }
.feature-side{ display:flex; flex-direction:column; gap:12px; }

.card-h{
  display:flex; gap:12px; align-items:flex-start; background:var(--white);
  border:1px solid var(--line); border-radius:var(--radius); padding:10px;
  color:var(--ink);
}
.card-h:hover{ border-color:var(--blue); text-decoration:none; }
.card-h-img{ position:relative; width:88px; height:66px; flex:none; border-radius:var(--radius-sm); overflow:hidden; background:var(--blue-pale); display:flex; align-items:center; justify-content:center; }
.card-h-img img{ position:absolute; inset:0; width:100%; height:100%; object-fit:cover; }
.card-h-img svg{ width:44%; height:44%; }
.card-h-body{ display:flex; flex-direction:column; gap:4px; min-width:0; }
.card-h-title{ font-family:var(--font-display); font-weight:700; font-size:.86rem; color:var(--ink); line-height:1.3; }

/* ---------- Cookie banner ---------- */
.cookie-banner{
  position:fixed; left:16px; right:16px; bottom:16px; z-index:80;
  max-width:640px; margin:0 auto; background:#fff; border:1px solid var(--line);
  border-radius:var(--radius); box-shadow:var(--shadow); padding:18px 20px; display:none;
}
.cookie-banner.show{ display:block; }
.cookie-banner p{ font-size:.9rem; margin-bottom:12px; color:var(--ink-soft); }
.cookie-actions{ display:flex; gap:10px; flex-wrap:wrap; }
.cookie-actions button{ font-family:var(--font-display); font-weight:700; font-size:.85rem; padding:8px 16px; border-radius:999px; cursor:pointer; border:1px solid var(--line); background:#fff; }
.cookie-actions .accept{ background:var(--blue); color:#fff; border-color:var(--blue); }
.cookie-actions .prefs{ background:transparent; }

/* ---------- 404 ---------- */
.page-404{ text-align:center; padding:80px 20px; }
.page-404 .code{ font-family:var(--font-mono); color:var(--blue); font-size:1rem; letter-spacing:.1em; }
.page-404 h1{ font-size:3rem; }

/* Utility */
.text-center{ text-align:center; }
.mt-0{ margin-top:0; }
.small{ font-size:.85rem; color:var(--ink-soft); }