/* ============================================================
   Estilo del blog — minimalismo tipo Paul Graham, look futurista
   Edita los colores aquí si quieres cambiar el tono del sitio.
   ============================================================ */

:root {
  --bg:        #0b0c10;   /* fondo */
  --bg-soft:   #121319;   /* tarjetas / bloques */
  --text:      #e8e9ed;   /* texto principal */
  --muted:     #8a8f9c;   /* fechas, notas */
  --accent:    #5eead4;   /* color de acento (links) */
  --accent-2:  #7c93ff;   /* acento secundario */
  --line:      #23252e;   /* líneas / bordes */
  --maxw:      640px;     /* ancho de lectura */
}

/* Tema claro (se activa con el botón) */
:root[data-theme="light"] {
  --bg:        #fbfbfa;
  --bg-soft:   #f1f1ef;
  --text:      #16181d;
  --muted:     #6b7280;
  --accent:    #0d9488;
  --accent-2:  #4f46e5;
  --line:      #e4e4e0;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(124,147,255,0.10), transparent 60%),
    radial-gradient(900px 500px at -10% 10%, rgba(94,234,212,0.08), transparent 55%),
    var(--bg);
  color: var(--text);
  font-family: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 18px;
  line-height: 1.65;
  letter-spacing: 0.1px;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 40px 24px 96px;
}

/* ---- Barra superior ---- */
.topbar {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 24px 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text);
  text-decoration: none;
}
.brand span { color: var(--accent); }
.theme-toggle {
  background: var(--bg-soft);
  border: 1px solid var(--line);
  color: var(--muted);
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 13px;
  cursor: pointer;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}
.theme-toggle:hover { color: var(--text); border-color: var(--accent); }

/* ---- Encabezado de la home ---- */
.hero {
  margin: 28px 0 40px;
  display: flex;
  align-items: center;
  gap: 18px;
}
.hero-text { flex: 1; }
.hero h1 {
  font-size: 44px;
  line-height: 1.1;
  margin: 0 0 14px;
  letter-spacing: -0.5px;
  background: linear-gradient(120deg, var(--text), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero p { color: var(--muted); margin: 0; max-width: 52ch; }

/* Foto pequeña como detalle */
.hero-photo {
  width: 84px;
  height: 84px;
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid var(--line);
  box-shadow: 0 0 0 4px rgba(94,234,212,0.06);
  flex: none;
}

/* ---- Botones de subtemas (filtros) ---- */
.topics {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 28px;
}
.topic {
  background: var(--bg-soft);
  border: 1px solid var(--line);
  color: var(--muted);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 13px;
  cursor: pointer;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  transition: color .15s, border-color .15s;
}
.topic:hover { color: var(--text); border-color: var(--accent); }
.topic.active {
  color: var(--bg);
  background: var(--accent);
  border-color: var(--accent);
}

/* ---- Toggle de idioma del artículo ---- */
.lang-toggle {
  display: inline-flex;
  border: 1px solid var(--line);
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: 30px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12px;
}
.lang-toggle button {
  background: transparent;
  border: none;
  color: var(--muted);
  padding: 5px 14px;
  cursor: pointer;
}
.lang-toggle button.active { background: var(--accent); color: var(--bg); }
[data-lang-block] { display: none; }
[data-lang-block].show { display: block; }

/* ---- Lista de ensayos ---- */
.posts { list-style: none; padding: 0; margin: 0; }
.posts li {
  display: flex;
  align-items: baseline;
  gap: 18px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}
.posts time {
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 13px;
  white-space: nowrap;
  min-width: 90px;
}
.posts a {
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
}
.posts a:hover { color: var(--accent); }

/* ---- Artículo ---- */
article h1 {
  font-size: 34px;
  line-height: 1.15;
  margin: 8px 0 6px;
  letter-spacing: -0.4px;
}
.meta {
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 13px;
  margin-bottom: 36px;
}
article p { margin: 0 0 22px; }
article h2 { font-size: 22px; margin: 40px 0 12px; }
article a { color: var(--accent-2); text-underline-offset: 3px; }
article blockquote {
  margin: 28px 0;
  padding: 4px 20px;
  border-left: 2px solid var(--accent);
  color: var(--muted);
  font-style: italic;
}
article code {
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 1px 6px;
  font-size: 0.9em;
}

/* ---- Tira de fotos (detalle) ---- */
.photo-strip {
  display: flex;
  gap: 10px;
  margin: 56px 0 8px;
  flex-wrap: wrap;
}
.photo-strip img {
  width: 96px;
  height: 96px;
  object-fit: cover;
  border-radius: 10px;
  border: 1px solid var(--line);
  filter: grayscale(0.15);
  transition: filter .2s, transform .2s;
}
.photo-strip img:hover { filter: none; transform: translateY(-2px); }
.photo-caption { color: var(--muted); font-size: 12px; margin: 0 0 0 2px; }

/* ---- Logros / Achievements ---- */
.achievements { margin: 64px 0 8px; }
.achievements h2 {
  font-size: 14px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 18px;
}
.ach-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}
.ach {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 12px;
}
.ach svg {
  width: 26px;
  height: 26px;
  flex: none;
  stroke: var(--accent);
  fill: none;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.ach-text strong { display: block; font-size: 14px; font-weight: 600; }
.ach-text span { font-size: 12.5px; color: var(--muted); }

@media (max-width: 520px) {
  .ach-grid { grid-template-columns: 1fr; }
}

/* ---- Pie ---- */
.backlink {
  display: inline-block;
  margin-top: 48px;
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
}
.backlink:hover { color: var(--accent); }

/* ---- Compartir en LinkedIn ---- */
.post-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.share-li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 48px;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--bg-soft);
  color: var(--text);
  font-size: 13px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  cursor: pointer;
}
.share-li:hover { border-color: var(--accent); color: var(--accent); }
.share-li svg { width: 15px; height: 15px; fill: currentColor; }

footer {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px 60px;
  color: var(--muted);
  font-size: 13px;
  border-top: 1px solid var(--line);
  padding-top: 24px;
}
footer a { color: var(--muted); }

@media (max-width: 520px) {
  body { font-size: 17px; }
  .hero h1 { font-size: 34px; }
  .posts li { flex-direction: column; gap: 2px; }
  .posts time { min-width: 0; }
}