/* ============================================================
   Blog — Hiperhidrosis GDL
   Hoja de estilos compartida por /blog/index.html y cada artículo.
   Reutiliza la misma paleta y tipografías del sitio principal
   (index.html) para que el blog se sienta parte del mismo sitio.
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --navy:    #0d1f3c;
  --navy-mid:#112847;
  --teal:    #1a6b72;
  --teal-lt: #22909a;
  --gold:    #c9a84c;
  --gold-lt: #e5c97a;
  --cream:   #f8f4ef;
  --white:   #ffffff;
  --gray:    #6b7280;
  --gray-lt: #f1f0ee;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'DM Sans', sans-serif;
  background: var(--cream);
  color: var(--navy);
  line-height: 1.7;
}

a { color: inherit; }

/* ── NAV (versión simplificada de la del sitio principal) ── */
nav.blog-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13,31,60,0.96);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 6%;
  gap: 16px;
}
.blog-nav .nav-brand {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
}
.blog-nav .nav-brand img { height: 52px; width: auto; display: block; }
.blog-nav .nav-back {
  color: rgba(255,255,255,0.7);
  font-size: 0.85rem;
  text-decoration: none;
  white-space: nowrap;
}
.blog-nav .nav-back:hover { color: #fff; }
.blog-nav .nav-cta {
  background: #25D366;
  color: #fff;
  font-weight: 600;
  font-size: 0.85rem;
  padding: 10px 20px;
  border-radius: 6px;
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.2s;
}
.blog-nav .nav-cta:hover { background: #1ebe5a; }

/* ── HERO pequeño (índice y artículos) ── */
.blog-hero {
  padding: 64px 6% 40px;
  max-width: 780px;
  margin: 0 auto;
  text-align: center;
}
.blog-tag {
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--teal);
  font-weight: 500;
  margin-bottom: 14px;
}
.blog-hero h1 {
  font-family: 'Playfair Display', serif;
  font-size: clamp(1.7rem, 3.4vw, 2.5rem);
  line-height: 1.25;
  color: var(--navy);
  margin-bottom: 16px;
}
.blog-hero .blog-lead {
  color: var(--gray);
  font-size: 1.02rem;
  max-width: 560px;
  margin: 0 auto;
}

/* ── ÍNDICE: tarjetas de artículos ── */
.blog-list {
  max-width: 780px;
  margin: 0 auto;
  padding: 0 6% 100px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.blog-card {
  display: block;
  background: var(--gray-lt);
  border-left: 3px solid var(--teal);
  border-radius: 12px;
  padding: 28px 30px;
  text-decoration: none;
  transition: transform 0.2s, box-shadow 0.2s;
}
.blog-card:hover { transform: translateY(-3px); box-shadow: 0 12px 30px rgba(13,31,60,0.1); }
.blog-card h2 {
  font-family: 'Playfair Display', serif;
  font-size: 1.25rem;
  color: var(--navy);
  margin-bottom: 8px;
}
.blog-card p {
  font-size: 0.92rem;
  color: var(--gray);
  line-height: 1.65;
  margin-bottom: 12px;
}
.blog-card .blog-card-link {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--teal);
  letter-spacing: 0.02em;
}

/* ── ARTÍCULO ── */
article.blog-post {
  max-width: 700px;
  margin: 0 auto;
  padding: 0 6% 40px;
}
.blog-post h2 {
  font-family: 'Playfair Display', serif;
  font-size: clamp(1.25rem, 2.4vw, 1.55rem);
  color: var(--navy);
  margin: 40px 0 16px;
  line-height: 1.3;
}
.blog-post p {
  font-size: 1rem;
  color: #3a4152;
  margin-bottom: 18px;
}
.blog-post ul, .blog-post ol {
  margin: 0 0 18px 1.3em;
  color: #3a4152;
}
.blog-post li { margin-bottom: 8px; line-height: 1.65; }
.blog-post strong { color: var(--navy); }

/* Caja de aviso / nota clínica dentro del artículo */
.blog-callout {
  background: var(--gray-lt);
  border-left: 3px solid var(--gold);
  border-radius: 10px;
  padding: 20px 24px;
  margin: 28px 0;
  font-size: 0.92rem;
  color: var(--navy);
  line-height: 1.6;
}
.blog-callout strong { color: var(--teal); }

/* Meta línea (fecha / tiempo de lectura) */
.blog-meta {
  font-size: 0.8rem;
  color: var(--gray);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 28px;
  text-align: center;
}

/* CTA final de cada artículo */
.blog-cta {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-mid) 60%, var(--teal) 100%);
  border-radius: 16px;
  padding: 36px 32px;
  text-align: center;
  margin-top: 44px;
}
.blog-cta h3 {
  font-family: 'Playfair Display', serif;
  color: #fff;
  font-size: 1.3rem;
  margin-bottom: 10px;
}
.blog-cta p {
  color: rgba(255,255,255,0.72);
  font-size: 0.92rem;
  max-width: 460px;
  margin: 0 auto 22px;
}
.blog-cta .wa-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: #25D366;
  color: #fff;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 14px 30px;
  border-radius: 6px;
  text-decoration: none;
  box-shadow: 0 4px 20px rgba(37,211,102,0.4);
  transition: background 0.2s;
}
.blog-cta .wa-btn:hover { background: #1ebe5a; }

/* Enlace de regreso al índice del blog, al pie del artículo */
.blog-back-index {
  display: block;
  text-align: center;
  margin-top: 28px;
  font-size: 0.88rem;
  color: var(--teal);
  text-decoration: none;
  font-weight: 500;
}
.blog-back-index:hover { text-decoration: underline; }

/* ── FOOTER (igual al del sitio principal) ── */
footer.blog-footer {
  background: var(--navy);
  color: rgba(255,255,255,0.5);
  text-align: center;
  padding: 32px 6%;
  font-size: 0.82rem;
  line-height: 1.7;
}
footer.blog-footer strong { color: var(--gold); }

@media (max-width: 640px) {
  .blog-nav .nav-back { display: none; }
  article.blog-post, .blog-list { padding-left: 5.5%; padding-right: 5.5%; }
}