/* ==============================================
   ION SOFTWARE · blog.css
   Blog theme — diseño coherente con ionsoftware.es
   ============================================== */

/* --- Variables --- */
:root {
  --bg-primary:    #070b16;
  --bg-secondary:  #0c1220;
  --bg-card:       #0f1828;
  --bg-card-hover: #141f35;
  --border:        rgba(0,210,255,0.08);
  --border-hover:  rgba(0,210,255,0.28);
  --cyan:          #00d2ff;
  --blue:          #3b82f6;
  --purple:        #8b5cf6;
  --green:         #22c55e;
  --yellow:        #eab308;
  --text-primary:  #f0f6ff;
  --text-secondary:#94a3b8;
  --text-muted:    #4e6280;
  --font-display:  'Space Grotesk', sans-serif;
  --font-body:     'Inter', sans-serif;
  --font-mono:     'JetBrains Mono', 'Fira Code', monospace;
  --radius:        12px;
  --transition:    all 0.28s cubic-bezier(0.4,0,0.2,1);
  --shadow-card:   0 4px 32px rgba(0,0,0,0.5);
}

/* --- Reset --- */
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; font-size:16px; }
body {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
h1,h2,h3,h4 { font-family:var(--font-display); font-weight:600; line-height:1.15; letter-spacing:-0.3px; }
a { color:inherit; text-decoration:none; transition:var(--transition); }
img { max-width:100%; display:block; }
::-webkit-scrollbar { width:5px; }
::-webkit-scrollbar-track { background:var(--bg-primary); }
::-webkit-scrollbar-thumb { background:var(--cyan); border-radius:10px; }

/* --- Utilities --- */
.text-cyan { color:var(--cyan); }
.blog-container { max-width:1160px; margin:0 auto; padding:0 24px; }
.blog-container--narrow { max-width:760px; }

/* ==============================
   NAVBAR
   ============================== */
.blog-nav {
  position: fixed;
  top:0; left:0; right:0;
  z-index: 900;
  padding: 0;
  background: rgba(7,11,22,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.blog-nav-container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.nav-logo { display:flex; align-items:center; font-family:var(--font-display); font-size:1.2rem; font-weight:700; gap:0; }
.logo-ion { color:var(--cyan); }
.logo-sw  { color:var(--text-primary); }
.blog-nav-links {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 6px;
}
.blog-nav-links a {
  color: var(--text-secondary);
  font-size: 0.88rem;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: 8px;
  transition: var(--transition);
}
.blog-nav-links a:hover,
.blog-nav-active {
  color: var(--cyan) !important;
  background: rgba(0,210,255,0.06);
}
.nav-cta-btn {
  background: linear-gradient(135deg, var(--cyan) 0%, var(--blue) 100%);
  color: #000 !important;
  font-size: 0.84rem;
  font-weight: 600;
  padding: 8px 18px;
  border-radius: 20px;
}
.nav-cta-btn:hover { opacity:.88; background: linear-gradient(135deg, var(--cyan) 0%, var(--blue) 100%) !important; }
.blog-nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}
.blog-nav-toggle span { display:block; width:22px; height:2px; background:var(--text-primary); border-radius:2px; transition:var(--transition); }

/* ==============================
   BLOG MAIN + HERO
   ============================== */
.blog-main { padding-top: 64px; min-height: calc(100vh - 64px); }

.blog-hero {
  padding: 80px 0 56px;
  text-align: center;
  position: relative;
}
.blog-hero::before {
  content: '';
  position: absolute;
  top: 0; left: 50%; transform: translateX(-50%);
  width: 600px;
  height: 300px;
  background: radial-gradient(ellipse at center, rgba(0,210,255,0.06) 0%, transparent 70%);
  pointer-events: none;
}
.blog-hero-label {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--cyan);
  background: rgba(0,210,255,0.08);
  border: 1px solid rgba(0,210,255,0.2);
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 20px;
}
.blog-hero-title {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  line-height: 1.15;
}
.blog-hero-sub {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 520px;
  margin: 0 auto;
  line-height: 1.65;
}

/* ==============================
   TAGS BAR
   ============================== */
.blog-tags-bar { padding: 0 0 32px; }
.blog-tags-list { display:flex; gap:8px; flex-wrap:wrap; justify-content:center; }
.blog-tag {
  font-size: 0.76rem;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: 20px;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  background: var(--bg-card);
  transition: var(--transition);
  cursor: pointer;
}
.blog-tag:hover, .blog-tag-active {
  border-color: rgba(0,210,255,0.4);
  color: var(--cyan);
  background: rgba(0,210,255,0.06);
}

/* ==============================
   GRID DE POSTS
   ============================== */
.blog-grid-section { padding: 0 0 80px; }
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
@media (max-width: 1024px) { .blog-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px)  { .blog-grid { grid-template-columns: 1fr; } }

/* ==============================
   POST CARD
   ============================== */
.post-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  display: flex;
  flex-direction: column;
  padding: 24px;
  gap: 12px;
  transition: var(--transition);
  overflow: hidden;
}
.post-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--blue));
  opacity: 0;
  transition: var(--transition);
}
.post-card:hover { background:var(--bg-card-hover); border-color:var(--border-hover); transform:translateY(-3px); box-shadow:var(--shadow-card); }
.post-card:hover::before { opacity:1; }

/* Overlay link (whole card clickable) */
.post-card-link {
  position: absolute;
  inset: 0;
  z-index: 0;
  border-radius: 16px;
}
.post-card > *:not(.post-card-link) { position:relative; z-index:1; }

.post-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}
.post-card-tags { display:flex; gap:6px; flex-wrap:wrap; }
.post-tag {
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  padding: 2px 9px;
  border-radius: 8px;
  background: rgba(0,210,255,0.08);
  border: 1px solid rgba(0,210,255,0.18);
  color: var(--cyan);
}
.post-card-date {
  font-size: 0.74rem;
  color: var(--text-muted);
  white-space: nowrap;
}
.post-card-title {
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-primary);
}
.post-card-title a:hover { color: var(--cyan); }
.post-card-summary {
  font-size: 0.86rem;
  color: var(--text-secondary);
  line-height: 1.6;
  flex: 1;
}
.post-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}
.post-read-time { font-size:0.74rem; color:var(--text-muted); }
.post-card-cta { font-size:0.8rem; font-weight:600; color:var(--cyan); }

/* ==============================
   PAGINACIÓN
   ============================== */
.blog-pagination { display:flex; align-items:center; justify-content:center; gap:12px; margin-top:48px; }
.blog-page-btn {
  padding: 9px 20px;
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  transition: var(--transition);
}
.blog-page-btn:hover { border-color:var(--cyan); color:var(--cyan); background:rgba(0,210,255,0.05); }
.blog-page-info { font-size:0.82rem; color:var(--text-muted); }

/* ==============================
   EMPTY STATE
   ============================== */
.blog-empty { text-align:center; padding:64px 0; color:var(--text-muted); font-size:1rem; }

/* ==============================
   POST INDIVIDUAL
   ============================== */
.post-article { padding: 40px 0 80px; }

.post-header { margin-bottom:32px; }
.post-header-tags { display:flex; gap:8px; flex-wrap:wrap; margin-bottom:14px; }
.post-title { font-size:clamp(1.8rem,5vw,2.6rem); font-weight:700; color:var(--text-primary); margin-bottom:12px; line-height:1.2; }
.post-subtitle { font-size:1.1rem; color:var(--text-secondary); margin-bottom:16px; line-height:1.55; }
.post-meta { display:flex; align-items:center; gap:8px; font-size:0.82rem; color:var(--text-muted); flex-wrap:wrap; }
.post-meta-sep { opacity:0.4; }

.post-cover { margin-bottom:36px; border-radius:16px; overflow:hidden; border:1px solid var(--border); }
.post-cover img { width:100%; max-height:460px; object-fit:cover; }

/* ── Body de contenido markdown ── */
.post-body {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--text-secondary);
}
.post-body h2 { font-size:1.5rem; color:var(--text-primary); margin:2.4em 0 0.8em; padding-bottom:0.4em; border-bottom:1px solid var(--border); }
.post-body h3 { font-size:1.15rem; color:var(--text-primary); margin:2em 0 0.6em; }
.post-body h4 { font-size:1rem; color:var(--text-primary); margin:1.6em 0 0.4em; }
.post-body p { margin-bottom:1.4em; }
.post-body a { color:var(--cyan); text-decoration:underline; text-decoration-color:rgba(0,210,255,0.3); }
.post-body a:hover { text-decoration-color:var(--cyan); }
.post-body strong { color:var(--text-primary); font-weight:600; }
.post-body em { color:var(--text-primary); }
.post-body ul, .post-body ol { padding-left:1.4em; margin-bottom:1.4em; }
.post-body li { margin-bottom:0.5em; }
.post-body blockquote {
  border-left: 3px solid var(--cyan);
  padding: 12px 20px;
  background: rgba(0,210,255,0.04);
  border-radius: 0 8px 8px 0;
  margin: 1.6em 0;
  color: var(--text-primary);
  font-style: italic;
}
.post-body code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: rgba(0,210,255,0.07);
  border: 1px solid rgba(0,210,255,0.12);
  padding: 2px 6px;
  border-radius: 5px;
  color: var(--cyan);
}
.post-body pre {
  background: #0a0f1e;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  overflow-x: auto;
  margin: 1.6em 0;
  font-size: 0.88rem;
}
.post-body pre code { background:none; border:none; padding:0; color:inherit; }
.post-body img { border-radius:10px; margin:1.6em 0; border:1px solid var(--border); }
.post-body table {
  width:100%; border-collapse:collapse; margin:1.6em 0; font-size:.9rem;
}
.post-body th, .post-body td { padding:10px 14px; border:1px solid var(--border); text-align:left; }
.post-body th { background:var(--bg-secondary); font-weight:600; color:var(--text-primary); }
.post-body tr:nth-child(even) { background:rgba(255,255,255,0.02); }
.post-body hr { border:none; border-top:1px solid var(--border); margin:2.4em 0; }

/* Syntax highlight overrides (dracula) */
.post-body .highlight { border-radius:12px; overflow:hidden; margin:1.6em 0; }

.post-footer-tags { display:flex; align-items:center; gap:8px; flex-wrap:wrap; margin-top:40px; padding-top:24px; border-top:1px solid var(--border); }
.post-footer-tags-label { font-size:0.78rem; color:var(--text-muted); font-weight:600; text-transform:uppercase; letter-spacing:.5px; }

.post-nav { margin-top:32px; }
.post-nav-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  padding: 9px 18px;
  border-radius: 10px;
  transition: var(--transition);
}
.post-nav-back:hover { color:var(--cyan); border-color:rgba(0,210,255,.3); background:rgba(0,210,255,0.05); }

/* ==============================
   FOOTER
   ============================== */
.blog-footer {
  border-top: 1px solid var(--border);
  padding: 28px 0;
  background: var(--bg-secondary);
}
.blog-footer-container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.blog-footer-copy { font-size:0.78rem; color:var(--text-muted); }
.blog-footer-copy a { color:var(--text-muted); }
.blog-footer-copy a:hover { color:var(--cyan); }

/* ==============================
   FADE IN
   ============================== */
.fade-in { opacity:0; transform:translateY(16px); transition:opacity 0.5s ease, transform 0.5s ease; }
.fade-in.visible { opacity:1; transform:none; }

/* ==============================
   RESPONSIVE
   ============================== */
@media (max-width: 768px) {
  .blog-nav-links {
    display: none;
    position: absolute;
    top: 64px; left:0; right:0;
    background: rgba(7,11,22,0.98);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 16px 24px 20px;
    gap: 4px;
  }
  .blog-nav-links.open { display:flex; }
  .blog-nav-toggle { display:flex; }
  .blog-hero { padding:60px 0 40px; }
}
@media (max-width: 480px) {
  .post-title { font-size:1.7rem; }
  .blog-footer-container { flex-direction:column; text-align:center; }
}