/* ===========================================================
   SeoImpacto — Blog styles
   Paleta de marca: naranja #f98a15 sobre oscuro #0b0c10 / #182232
   Tipografía: Inter (igual que el header/nav del sitio)
   =========================================================== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

:root {
  --si-orange: #f98a15;
  --si-orange-soft: rgba(249, 138, 21, 0.12);
  --si-dark: #0b0c10;
  --si-dark-2: #12141a;
  --si-panel: #182232;
  --si-line: rgba(255, 255, 255, 0.08);
  --si-text: #e7ebf0;
  --si-muted: #a0aab2;
  --si-white: #ffffff;
}

* { box-sizing: border-box; }

body.si-blog {
  margin: 0;
  background: var(--si-dark);
  color: var(--si-text);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

.si-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.si-narrow { max-width: 820px; }

a { color: var(--si-orange); }

/* ---------- Blog hero (listado) ---------- */
.si-blog-hero {
  position: relative;
  padding: 90px 0 70px;
  text-align: center;
  background:
    radial-gradient(1200px 400px at 50% -10%, rgba(249,138,21,0.18), transparent 60%),
    var(--si-dark);
  border-bottom: 1px solid var(--si-line);
}
.si-blog-hero .kicker {
  display: inline-block;
  background: var(--si-orange);
  color: #000;
  font-weight: 900;
  font-size: 0.78rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 6px 14px;
  border: 2px solid #000;
}
.si-blog-hero h1 {
  font-size: clamp(2rem, 5vw, 3.4rem);
  font-weight: 900;
  line-height: 1.05;
  margin: 18px auto 14px;
  max-width: 900px;
  text-transform: uppercase;
  letter-spacing: -0.5px;
}
.si-blog-hero h1 .hl { color: var(--si-orange); }
.si-blog-hero p {
  color: var(--si-muted);
  max-width: 640px;
  margin: 0 auto;
  font-size: 1.08rem;
}

/* ---------- Grid de tarjetas ---------- */
.si-blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  padding: 64px 0 90px;
}
@media (max-width: 980px) { .si-blog-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px)  { .si-blog-grid { grid-template-columns: 1fr; } }

.si-card {
  position: relative;
  background: var(--si-dark-2);
  border: 1px solid var(--si-line);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
}
.si-card:hover {
  transform: translateY(-6px);
  border-color: var(--si-orange);
  box-shadow: 0 18px 40px rgba(0,0,0,.55);
}
.si-card a { text-decoration: none; color: inherit; display: flex; flex-direction: column; height: 100%; }

.si-card-media {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: #000;
}
.si-card-media video {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
}
.si-card-media .cat {
  position: absolute; top: 12px; left: 12px; z-index: 2;
  background: var(--si-orange); color: #000;
  font-size: 0.68rem; font-weight: 900; letter-spacing: 1px;
  text-transform: uppercase; padding: 5px 10px; border: 2px solid #000;
}
.si-card-media::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(11,12,16,.85));
  pointer-events: none;
}
.si-card-body { padding: 20px 20px 24px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.si-card-body h3 {
  font-size: 1.18rem; font-weight: 800; line-height: 1.25; margin: 0;
  text-transform: none;
}
.si-card:hover .si-card-body h3 { color: var(--si-orange); }
.si-card-date { color: var(--si-muted); font-size: 0.82rem; margin: 0; }
.si-card-more {
  margin-top: auto; color: var(--si-orange); font-weight: 800;
  font-size: 0.82rem; text-transform: uppercase; letter-spacing: 1px;
  display: inline-flex; align-items: center; gap: 6px;
}

/* ---------- Artículo ---------- */
.si-article-hero {
  position: relative;
  min-height: 62vh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  border-bottom: 3px solid var(--si-orange);
}
.si-article-hero video {
  position: absolute; inset: 0;
  width: 100%; height: 100%; object-fit: cover; z-index: 0;
}
.si-article-hero::after {
  content: ''; position: absolute; inset: 0; z-index: 1;
  background: linear-gradient(180deg, rgba(11,12,16,.55) 0%, rgba(11,12,16,.35) 40%, rgba(11,12,16,.96) 100%);
}
.si-article-hero .inner { position: relative; z-index: 2; width: 100%; padding: 60px 0 44px; }
.si-article-hero .cat {
  display: inline-block; background: var(--si-orange); color: #000;
  font-weight: 900; font-size: 0.76rem; letter-spacing: 2px;
  text-transform: uppercase; padding: 6px 13px; border: 2px solid #000;
}
.si-article-hero h1 {
  font-size: clamp(1.9rem, 4.5vw, 3.2rem);
  font-weight: 900; line-height: 1.08; margin: 18px 0 12px;
  max-width: 940px; text-transform: uppercase; letter-spacing: -0.5px;
}
.si-article-hero .date { color: var(--si-muted); font-weight: 600; margin: 0; }

.si-article {
  padding: 56px 0 80px;
  font-size: 1.12rem;
}
.si-article p { margin: 0 0 22px; color: var(--si-text); }
.si-article h2 {
  font-size: 1.7rem; font-weight: 800; margin: 46px 0 16px;
  line-height: 1.2; color: var(--si-white);
}
.si-article h2::before {
  content: ''; display: block; width: 54px; height: 4px;
  background: var(--si-orange); margin-bottom: 14px;
}
.si-article h3 { font-size: 1.3rem; font-weight: 800; margin: 30px 0 12px; color: var(--si-white); }
.si-article strong { color: var(--si-white); }
.si-article ul, .si-article ol { margin: 0 0 22px; padding-left: 22px; }
.si-article li { margin-bottom: 12px; }
.si-article a { text-decoration: underline; }

/* Callout / caso real */
.si-callout {
  background: var(--si-panel);
  border-left: 4px solid var(--si-orange);
  padding: 24px 26px;
  margin: 34px 0;
  border-radius: 4px;
}
.si-callout h3 { margin-top: 0; }

/* Bloque de recursos / bibliografía */
.si-resources { font-size: 0.95rem; color: var(--si-muted); }
.si-resources i { color: var(--si-orange); margin-right: 6px; }
.si-resources strong { color: var(--si-text); }

/* Cluster link (siguiente lectura) */
.si-cluster {
  margin: 34px 0;
  padding: 20px 24px;
  background: var(--si-orange-soft);
  border: 1px solid rgba(249,138,21,.35);
  border-radius: 8px;
  font-weight: 600;
}
.si-cluster a { color: var(--si-orange); }

/* CTA box */
.si-cta-box {
  background: linear-gradient(135deg, #182232, #0b0c10);
  border: 1px solid var(--si-orange);
  padding: 40px 32px;
  border-radius: 10px;
  margin-top: 48px;
  text-align: center;
}
.si-cta-box h3 { margin: 0 0 12px; font-size: 1.5rem; color: var(--si-white); }
.si-cta-box p { color: var(--si-muted); max-width: 520px; margin: 0 auto 24px; }
.si-btn {
  display: inline-block;
  background: var(--si-orange); color: #000;
  font-weight: 900; text-transform: uppercase; letter-spacing: 1px;
  padding: 15px 30px; border: 2px solid var(--si-orange);
  text-decoration: none; transition: all .3s;
}
.si-btn:hover { background: transparent; color: var(--si-orange); box-shadow: 0 0 18px rgba(249,138,21,.45); }

/* ---------- Footer compacto ---------- */
.si-footer {
  border-top: 1px solid var(--si-line);
  background: #050608;
  padding: 48px 0 34px;
}
.si-footer .row {
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 24px;
}
.si-footer img { height: 42px; }
.si-footer .links { display: flex; gap: 22px; flex-wrap: wrap; }
.si-footer .links a {
  color: var(--si-muted); text-decoration: none; font-weight: 700;
  font-size: 0.9rem; text-transform: uppercase; letter-spacing: .5px;
}
.si-footer .links a:hover { color: var(--si-orange); }
.si-footer .copy { color: #5a6470; font-size: 0.82rem; margin-top: 26px; text-align: center; }
.si-footer .socials { display: flex; gap: 14px; }
.si-footer .socials a {
  width: 38px; height: 38px; display: grid; place-items: center;
  border: 1px solid var(--si-line); color: var(--si-muted); border-radius: 50%;
  text-decoration: none; transition: all .3s;
}
.si-footer .socials a:hover { border-color: var(--si-orange); color: var(--si-orange); }

.si-back {
  display: inline-flex; align-items: center; gap: 8px;
  color: var(--si-muted); text-decoration: none; font-weight: 700;
  font-size: 0.85rem; text-transform: uppercase; letter-spacing: 1px;
  margin-top: 40px;
}
.si-back:hover { color: var(--si-orange); }

/* ---------- Barra lateral de redes sociales (izquierda, flotante) ---------- */
.si-social-rail {
  position: fixed;
  top: 50%;
  left: 0;
  transform: translateY(-50%);
  z-index: 100000;
  display: flex;
  flex-direction: column;
  box-shadow: 3px 0 14px rgba(0, 0, 0, 0.45);
  border: 1px solid rgba(0, 0, 0, 0.35);
  border-left: none;
}
.si-social-rail a {
  position: relative;
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  text-decoration: none;
  overflow: hidden;
  transition: width .3s ease, filter .3s ease;
  /* entrada escalonada desde la izquierda */
  animation: si-rail-in .55s cubic-bezier(.2,.8,.2,1) both;
}
.si-social-rail a i { font-size: 1.4rem; line-height: 1; transition: transform .3s ease; z-index: 1; }
.si-social-rail a:hover { width: 66px; filter: brightness(1.08); }
.si-social-rail a:hover i { transform: scale(1.18); }
/* barrido de brillo al pasar el cursor */
.si-social-rail a::before {
  content: ''; position: absolute; top: 0; left: -120%;
  width: 60%; height: 100%;
  background: linear-gradient(120deg, transparent, rgba(255,255,255,.45), transparent);
  transform: skewX(-20deg); transition: left .5s ease;
}
.si-social-rail a:hover::before { left: 140%; }

/* colores de marca por red */
.si-social-rail a.instagram { background: linear-gradient(45deg,#f09433,#e6683c,#dc2743,#cc2366,#bc1888); }
.si-social-rail a.facebook  { background: #1877F2; }
.si-social-rail a.youtube   { background: #FF0000; }
.si-social-rail a.tiktok    { background: #000; }
.si-social-rail a.linkedin  { background: #0077B5; }
.si-social-rail a.whatsapp  { background: #25D366; }

/* pulso permanente sutil en WhatsApp (CTA) */
.si-social-rail a.whatsapp { animation: si-rail-in .55s cubic-bezier(.2,.8,.2,1) both, si-rail-pulse 2.4s ease-in-out 1s infinite; }

.si-social-rail a:nth-child(1){animation-delay:.05s}
.si-social-rail a:nth-child(2){animation-delay:.12s}
.si-social-rail a:nth-child(3){animation-delay:.19s}
.si-social-rail a:nth-child(4){animation-delay:.26s}
.si-social-rail a:nth-child(5){animation-delay:.33s}
.si-social-rail a:nth-child(6){animation-delay:.40s}

@keyframes si-rail-in { from { opacity: 0; transform: translateX(-40px); } to { opacity: 1; transform: translateX(0); } }
@keyframes si-rail-pulse { 0%,100%{ box-shadow: 0 0 0 0 rgba(37,211,102,.55);} 70%{ box-shadow: 0 0 0 10px rgba(37,211,102,0);} }

@media (max-width: 768px) {
  .si-social-rail a { width: 42px; height: 42px; }
  .si-social-rail a i { font-size: 1.15rem; }
  .si-social-rail a:hover { width: 54px; }
}