/* tech-blog · tema Nord
   Paleta: https://www.nordtheme.com/
   Polar Night  #2E3440 #3B4252 #434C5E #4C566A
   Snow Storm   #D8DEE9 #E5E9F0 #ECEFF4
   Frost        #8FBCBB #88C0D0 #81A1C1 #5E81AC
   Aurora       #BF616A #D08770 #EBCB8B #A3BE8C #B48EAD
*/

:root {
  --bg:          #2E3440;
  --bg-alt:      #3B4252;
  --bg-hi:       #434C5E;
  --fg:          #E5E9F0;
  --fg-dim:      #D8DEE9;
  --muted:       #4C566A;
  --frost:       #88C0D0;
  --frost-alt:   #81A1C1;
  --aurora-red:  #BF616A;
  --aurora-yellow: #EBCB8B;
  --aurora-green:  #A3BE8C;
  --border:      #434C5E;
  --mono: ui-monospace, "JetBrains Mono", "Fira Code", "Cascadia Code",
          "IBM Plex Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html {
  color-scheme: dark;
  scrollbar-color: var(--bg-hi) var(--bg);
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--mono);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--frost); text-decoration: none; }
a:hover { color: var(--aurora-yellow); text-decoration: underline; }

/* ---------- layout ---------- */

.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--bg-alt);
}

.nav {
  max-width: 780px;
  margin: 0 auto;
  padding: 0.9rem 1.5rem;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}

.brand { color: var(--fg); font-weight: 700; }
.brand:hover { color: var(--frost); text-decoration: none; }

.nav-links { display: flex; gap: 1.2rem; align-items: baseline; }
.nav-links a { color: var(--fg-dim); font-size: 0.9rem; }
.nav-links a:hover { color: var(--frost); text-decoration: none; }

.lang-switch { font-size: 0.85rem; }
.lang-switch a { color: var(--muted); }
.lang-switch a:hover { color: var(--frost); }
.lang-switch a.active { color: var(--aurora-green); font-weight: 700; }
.lang-sep { color: var(--muted); }

.content {
  max-width: 780px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
}

.site-footer {
  max-width: 780px;
  margin: 0 auto;
  padding: 0 1.5rem 2rem;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.8rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
}

.muted { color: var(--muted); }

/* ---------- newsletter ---------- */

.newsletter {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.newsletter-label {
  font-size: 0.8rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.newsletter-row {
  display: flex;
  gap: 0.4rem;
}

.newsletter input[type="email"] {
  flex: 1;
  min-width: 0;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--fg);
  font-family: var(--mono);
  font-size: 0.85rem;
  padding: 0.35rem 0.6rem;
  border-radius: 4px;
}
.newsletter input[type="email"]:focus { outline: none; border-color: var(--frost); }

.newsletter button {
  background: var(--frost);
  color: var(--bg);
  border: none;
  border-radius: 4px;
  font-family: var(--mono);
  font-weight: 700;
  font-size: 0.85rem;
  padding: 0 0.9rem;
  cursor: pointer;
}
.newsletter button:hover { background: var(--aurora-yellow); }

.flash {
  margin: 0.3rem 0 0;
  font-size: 0.8rem;
  color: var(--aurora-green);
}

/* ---------- index ---------- */

.index-head { margin-bottom: 2.2rem; }

.pageroot {
  margin: 0;
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--fg);
}
.pageroot::before { content: "$ "; color: var(--aurora-green); }

.tagline { margin: 0.3rem 0 0; font-size: 0.9rem; }

.post-list { display: flex; flex-direction: column; gap: 2.2rem; }

.post-card {
  border-left: 3px solid var(--bg-hi);
  padding-left: 1.2rem;
}
.post-card:hover { border-left-color: var(--frost); }

.post-head { margin-bottom: 0.4rem; }

.post-title { margin: 0 0 0.2rem; font-size: 1.25rem; }
.post-title a { color: var(--fg); }
.post-title a:hover { color: var(--frost); text-decoration: none; }

.post-meta { font-size: 0.8rem; }

.post-excerpt { margin: 0.4rem 0; color: var(--fg-dim); font-size: 0.92rem; }

.post-tags { margin-top: 0.4rem; }

.lang-note { margin: 0.4rem 0 0; font-size: 0.8rem; }

/* ---------- tags ---------- */

.tag {
  display: inline-block;
  font-size: 0.8rem;
  color: var(--frost-alt);
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 0.05rem 0.45rem;
  margin-right: 0.2rem;
}
.tag:hover { color: var(--bg); background: var(--frost); border-color: var(--frost); text-decoration: none; }

.tag-lg { font-size: 0.95rem; margin-bottom: 0.3rem; }

.tag-cloud { line-height: 2.2; }

/* ---------- article body ---------- */

.article-body h1, .article-body h2, .article-body h3, .article-body h4 {
  color: var(--frost);
  line-height: 1.3;
  margin-top: 2.2rem;
}
.article-body h1 { font-size: 1.45rem; }
.article-body h2 { font-size: 1.25rem; }
.article-body h3 { font-size: 1.1rem; }

.article-body p, .article-body ul, .article-body ol, .article-body blockquote {
  color: var(--fg-dim);
}

.article-body a { color: var(--frost); text-decoration: underline; }
.article-body a:hover { color: var(--aurora-yellow); }

.article-body blockquote {
  border-left: 3px solid var(--aurora-yellow);
  margin: 1.5rem 0;
  padding: 0.2rem 1rem;
  background: var(--bg-alt);
}

.article-body code {
  font-family: var(--mono);
  font-size: 0.9em;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 0.05rem 0.3rem;
  color: var(--aurora-yellow);
}

/* bloques de código: chroma (style nord, inline styles) */
.article-body pre {
  background: var(--bg-alt) !important;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1rem;
  overflow-x: auto;
  line-height: 1.55;
  font-size: 0.85rem;
}
.article-body pre code {
  background: transparent;
  border: none;
  padding: 0;
  color: inherit;
}

.article-body table {
  border-collapse: collapse;
  margin: 1.5rem 0;
  width: 100%;
}
.article-body th, .article-body td {
  border: 1px solid var(--border);
  padding: 0.4rem 0.8rem;
  text-align: left;
}
.article-body th { background: var(--bg-alt); color: var(--frost); }

.article-body hr { border: none; border-top: 1px solid var(--border); margin: 2rem 0; }

/* ---------- search ---------- */

.search-form { display: flex; gap: 0.6rem; margin-bottom: 2.2rem; }

.search-input {
  flex: 1;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  color: var(--fg);
  font-family: var(--mono);
  font-size: 1rem;
  padding: 0.5rem 0.8rem;
  border-radius: 4px;
}
.search-input:focus { outline: none; border-color: var(--frost); }

.search-btn {
  background: var(--frost);
  color: var(--bg);
  border: none;
  border-radius: 4px;
  font-family: var(--mono);
  font-weight: 700;
  padding: 0 1rem;
  cursor: pointer;
}
.search-btn:hover { background: var(--aurora-yellow); }

/* ---------- empty / error ---------- */

.empty { text-align: left; }
.empty h1 { color: var(--aurora-red); }

.code-hint {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1rem;
  overflow-x: auto;
  color: var(--aurora-green);
}

::selection { background: var(--frost); color: var(--bg); }

@media (max-width: 640px) {
  body { font-size: 15px; }
  .nav { flex-direction: column; gap: 0.4rem; }
  .site-footer { flex-direction: column; gap: 0.2rem; }
}