/* ── NucleoBlog — Public styles ─────────────────────────
   Escala de espaciado: 8 / 16 / 24 / 40 / 64 / 96
   Tipografía: system-ui (consistencia con dashboard)
   Acento: azul tinta #2563eb
────────────────────────────────────────────────────────── */

:root {
  --bg:         #fcfbf9;
  --surface:    #f5f3ef;
  --text:       #111111;
  --text-soft:  #2c2c2c;
  --meta:       #6b6b6b;
  --border:     #e6e3dc;
  --accent:     #2563eb;
  --accent-hover: #1d4ed8;
  --danger:     #b91c1c;
  --code-bg:    #f2efe9;

  --font: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Code", monospace;

  --s-1: 8px;
  --s-2: 16px;
  --s-3: 24px;
  --s-4: 40px;
  --s-5: 64px;
  --s-6: 96px;

  --radius: 4px;
  --radius-lg: 8px;

  --transition: 150ms ease;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg:         #1a1a1c;
    --surface:    #232325;
    --text:       #f5f5f5;
    --text-soft:  #e5e5e5;
    --meta:       #9a9a9a;
    --border:     #3b3b3f;
    --accent:     #60a5fa;
    --accent-hover: #93c5fd;
    --danger:     #f87171;
    --code-bg:    #29292c;
  }
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--font);
  font-size: 1.0625rem;
  line-height: 1.65;
  background: var(--bg);
  color: var(--text-soft);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* Contenedor fluido con padding responsive */
.wrap,
body > nav,
body > main,
body > footer {
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--s-3);
  padding-right: var(--s-3);
}

@media (max-width: 640px) {
  .wrap,
  body > nav,
  body > main,
  body > footer {
    padding-left: var(--s-2);
    padding-right: var(--s-2);
  }
}

/* ── Tipografía ── */
h1, h2, h3, h4, h5, h6 {
  color: var(--text);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.015em;
  margin: 1.6em 0 0.5em;
}

h1 { font-size: 2.25rem; letter-spacing: -0.025em; }
h2 { font-size: 1.6rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.05rem; }

@media (max-width: 640px) {
  h1 { font-size: 1.85rem; }
  h2 { font-size: 1.4rem; }
}

p { margin: 0 0 1.1em; }

a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover { color: var(--accent-hover); text-decoration: underline; }
a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 2px;
}

strong { color: var(--text); }

hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: var(--s-4) 0;
}

/* ── Nav superior (brand grande arriba + links debajo a la derecha) ── */
body > nav {
  padding-top: var(--s-5);
  padding-bottom: var(--s-3);
  margin-bottom: var(--s-4);
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: var(--s-2);
}

.site-brand {
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.025em;
  line-height: 1.1;
  align-self: flex-start;
}
.site-brand:hover { color: var(--accent); text-decoration: none; }

.site-nav {
  list-style: none;
  margin: 0;
  padding: 0;
  width: 100%;
  display: flex;
  gap: var(--s-3);
  flex-wrap: wrap;
  justify-content: flex-end;
  align-items: center;
}

.site-nav a {
  color: var(--text-soft);
  font-size: 0.92rem;
  font-weight: 500;
}
.site-nav a:hover { color: var(--accent); text-decoration: none; }

@media (max-width: 640px) {
  body > nav { padding-top: var(--s-4); gap: 6px; }
  .site-brand { font-size: 1.75rem; }
  .site-nav { justify-content: flex-start; gap: var(--s-2); }
}

/* ── Main ── */
body > main { padding-top: var(--s-2); padding-bottom: var(--s-5); }

/* ── Footer ── */
body > footer {
  padding-top: var(--s-3);
  padding-bottom: var(--s-4);
  margin-top: var(--s-5);
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
  color: var(--meta);
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
}
body > footer a { color: var(--meta); }
body > footer a:hover { color: var(--accent); text-decoration: none; }
body > footer .footer-sep { color: var(--border); user-select: none; }

/* ── Botones ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  font-family: var(--font);
  font-weight: 500;
  font-size: 0.95rem;
  line-height: 1;
  border-radius: var(--radius);
  cursor: pointer;
  text-decoration: none;
  border: 1px solid transparent;
  transition: background var(--transition), border-color var(--transition), color var(--transition), transform var(--transition);
}
.btn:hover { text-decoration: none; }
.btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}
.btn-primary:hover { background: var(--accent); border-color: var(--accent); color: #fff; }

.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}
.btn-ghost:hover { border-color: var(--text); color: var(--text); }

/* ── Home: hero ── */
.hero {
  padding: var(--s-5) 0 var(--s-4);
  text-align: center;
}

.hero h1 {
  font-size: 2.6rem;
  line-height: 1.15;
  margin: 0 0 var(--s-2);
  letter-spacing: -0.03em;
}

@media (max-width: 640px) {
  .hero { padding: var(--s-4) 0 var(--s-3); }
  .hero h1 { font-size: 2rem; }
}

.hero .lede {
  font-size: 1.15rem;
  color: var(--meta);
  max-width: 36ch;
  margin: 0 auto var(--s-3);
}

.hero-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ── Sección de features (home) ── */
.features {
  margin: var(--s-5) auto;
  max-width: 520px;
}
.features h2 { text-align: center; margin-bottom: var(--s-2); }

.features-list {
  list-style: none;
  padding: 0;
  margin: var(--s-3) 0;
}
.features-list li {
  position: relative;
  padding: 4px 0 4px 28px;
  color: var(--text-soft);
}
.features-list li::before {
  content: '';
  position: absolute;
  left: 2px;
  top: 0.95em;
  width: 8px;
  height: 1px;
  background: var(--accent);
}

/* ── Section titles (home "Publicaciones recientes") ── */
.section-title {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--meta);
  margin: 0 0 var(--s-3);
  text-align: center;
}

/* ── Lista de posts ── */
.post-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.post-list li {
  display: flex;
  align-items: baseline;
  gap: var(--s-3);
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}

.post-list li:last-child { border-bottom: 0; }

.post-list .date {
  font-size: 0.8rem;
  color: var(--meta);
  flex-shrink: 0;
  font-variant-numeric: tabular-nums;
  min-width: 7ch;
}

.post-list .title {
  font-size: 0.95rem;
  color: var(--text-soft);
  font-weight: 500;
  line-height: 1.4;
}
.post-list .title:hover { color: var(--accent); text-decoration: none; }

.post-list .byline {
  font-size: 0.78rem;
  color: var(--meta);
  margin-top: 2px;
}
.post-list .byline a { color: var(--meta); text-decoration: none; }
.post-list .byline a:hover { color: var(--accent); }

@media (max-width: 640px) {
  .post-list li { flex-direction: column; gap: 2px; }
  .post-list .date { min-width: 0; font-size: 0.8rem; }
}

/* ── Blog individual: header aislado ── */
.blog-body > .blog-top {
  max-width: 680px;
  margin: 0 auto;
  padding: var(--s-5) var(--s-3) var(--s-3);
}

@media (max-width: 640px) {
  .blog-body > .blog-top {
    padding: var(--s-4) var(--s-2) var(--s-2);
  }
}

.blog-top-title {
  display: inline-block;
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: var(--s-2);
}
.blog-top-title:hover { color: var(--accent); text-decoration: none; }

.blog-top-favicon {
  margin-right: 6px;
}

.blog-top-tagline {
  margin: 0 0 var(--s-2);
  color: var(--meta);
  font-size: 0.98rem;
  line-height: 1.5;
}

.blog-top-nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-2);
  margin-top: 4px;
  justify-content: flex-end;
}

@media (max-width: 640px) {
  .blog-top-nav { justify-content: flex-start; }
}

.blog-top-nav a {
  font-size: 0.92rem;
  color: var(--text-soft);
  font-weight: 500;
}
.blog-top-nav a:hover { color: var(--accent); text-decoration: none; }

/* Blog footer: centrado, dos líneas */
.blog-body > .blog-foot {
  max-width: 680px;
  margin: var(--s-5) auto 0;
  padding: var(--s-3) var(--s-3) var(--s-4);
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: 0.88rem;
  color: var(--meta);
  display: block;
}

.blog-body > .blog-foot > div { margin-top: 6px; }
.blog-body > .blog-foot > div:first-child { margin-top: 0; }

.blog-body > .blog-foot a { color: var(--meta); }
.blog-body > .blog-foot a:hover { color: var(--accent); text-decoration: none; }

.blog-foot-powered { font-size: 0.82rem; opacity: 0.9; }

/* ── Blog header (blog_detail top) ── */
.blog-header {
  margin-bottom: var(--s-4);
  padding-bottom: var(--s-3);
  border-bottom: 1px solid var(--border);
}
.blog-header h1 { margin: 0 0 6px; font-size: 1.9rem; }
.blog-header .desc {
  color: var(--meta);
  font-size: 1.02rem;
  margin: 0;
}

/* ── Article (post_detail) ── */
article header {
  margin-bottom: var(--s-4);
}

article h1 {
  font-size: 2.1rem;
  margin: 0 0 var(--s-1);
  letter-spacing: -0.025em;
}
@media (max-width: 640px) {
  article h1 { font-size: 1.7rem; }
}

article .meta {
  color: var(--meta);
  font-size: 0.9rem;
}

.content { font-size: 1.075rem; line-height: 1.75; }
.content > :first-child { margin-top: 0; }
.content h2 { margin-top: 2em; }
.content h3 { margin-top: 1.8em; }

.content ul, .content ol {
  margin: 0 0 1.1em;
  padding-left: 1.4em;
}
.content li { margin-bottom: 6px; }

.content a { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; }

.content img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  margin: var(--s-2) 0;
}

blockquote {
  border-left: 3px solid var(--accent);
  margin: var(--s-3) 0;
  padding: 4px 0 4px var(--s-2);
  color: var(--meta);
  font-style: italic;
}
blockquote p:last-child { margin-bottom: 0; }

code {
  background: var(--code-bg);
  padding: 2px 6px;
  border-radius: 3px;
  font-family: var(--mono);
  font-size: 0.9em;
}

pre {
  background: var(--code-bg);
  padding: var(--s-2);
  border-radius: var(--radius-lg);
  overflow-x: auto;
  border: 1px solid var(--border);
  font-size: 0.9rem;
  line-height: 1.5;
}
pre code { background: transparent; padding: 0; font-size: inherit; }

.post-back {
  margin-top: var(--s-5);
  padding-top: var(--s-3);
  border-top: 1px solid var(--border);
  font-size: 0.9rem;
}
.post-back a { color: var(--meta); }
.post-back a:hover { color: var(--accent); text-decoration: none; }

/* ── Formularios públicos (registro, login, crear_blog) ── */
.auth-form {
  max-width: 400px;
  margin: var(--s-4) auto;
}
.auth-form h2 { margin-top: 0; }
.auth-form .lede {
  color: var(--meta);
  margin-bottom: var(--s-3);
}

.form-field { margin-bottom: var(--s-2); }
.form-field label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}

.form-field input[type="text"],
.form-field input[type="email"],
.form-field input[type="password"],
.form-field input[type="url"],
.form-field textarea,
.form-field select,
input[type="text"],
input[type="email"],
input[type="password"],
input[type="url"],
textarea,
select {
  width: 100%;
  padding: 10px 12px;
  font-family: var(--font);
  font-size: 0.95rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  color: var(--text);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-field input:focus,
.form-field textarea:focus,
.form-field select:focus,
input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.form-field .helptext,
.form-field small {
  display: block;
  font-size: 0.8rem;
  color: var(--meta);
  margin-top: 4px;
}

.form-field .errorlist,
.errorlist {
  list-style: none;
  padding: 0;
  margin: 6px 0 0;
  font-size: 0.82rem;
  color: var(--danger);
}

.form-actions {
  display: flex;
  gap: 10px;
  align-items: center;
  margin-top: var(--s-3);
  flex-wrap: wrap;
}

/* Default django form.as_p fallback */
form p { margin: 0 0 var(--s-2); }
form p label { display: block; font-size: 0.85rem; font-weight: 600; margin-bottom: 6px; color: var(--text); }
form p input,
form p textarea,
form p select { width: 100%; }

/* ── Empty state (público) ── */
.empty-state {
  border: 1px dashed var(--border);
  border-radius: 8px;
  padding: var(--s-4) var(--s-3);
  text-align: center;
  background: var(--surface);
  margin: var(--s-3) 0;
}

.empty-state h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 0 0 6px;
  color: var(--text);
}

.empty-state p {
  margin: 0 auto;
  max-width: 42ch;
  color: var(--meta);
  font-size: 0.95rem;
}

/* ── Error pages (404, 500) ── */
.error-page {
  text-align: center;
  padding: var(--s-5) 0 var(--s-4);
}

.error-page .error-code {
  font-family: var(--mono);
  font-size: 0.85rem;
  letter-spacing: 0.2em;
  color: var(--meta);
  margin: 0 0 var(--s-2);
}

.error-page h1 {
  font-size: 2rem;
  margin: 0 0 var(--s-2);
  letter-spacing: -0.02em;
}

@media (max-width: 640px) {
  .error-page { padding: var(--s-4) 0 var(--s-3); }
  .error-page h1 { font-size: 1.6rem; }
}

/* ── Utilities ── */
.text-center { text-align: center; }
.text-meta { color: var(--meta); }
.mt-4 { margin-top: var(--s-4); }
.mb-4 { margin-bottom: var(--s-4); }

/* Disable old .btn transform on hover (muy 2015) */
.btn:hover { transform: none; }

/* Pagination */
.pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin: 2.5rem 0 1rem;
}
.pagination-info {
  font-size: 0.85rem;
  color: var(--meta);
}
.btn.is-disabled {
  opacity: 0.4;
  pointer-events: none;
}

/* Blog grid (descubrir) */
.blog-grid {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 18px;
}
.blog-grid li {
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 14px 16px;
  background: var(--bg);
}
.blog-grid-title {
  display: block;
  font-weight: 600;
  color: var(--text);
  text-decoration: none;
  margin-bottom: 4px;
}
.blog-grid-title:hover { color: var(--accent); }
.blog-grid-desc {
  font-size: 0.88rem;
  color: var(--meta);
  margin: 0;
  line-height: 1.45;
}
@media (max-width: 640px) {
  .pagination { flex-direction: column; gap: 8px; }
}


.search-form { display: flex; gap: 8px; margin: 16px 0 24px; }
.search-form input[type=search] {
  flex: 1;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 1rem;
  background: var(--bg);
  color: var(--text);
}
.search-form button {
  padding: 10px 16px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  border-radius: 4px;
  cursor: pointer;
}
.search-form button:hover { background: var(--accent); color: #fff; border-color: var(--accent); }
.blog-top-search { font-size: 0.95rem; }


.preview-banner {
  background: #fef3c7;
  color: #78350f;
  border: 1px solid #fcd34d;
  padding: 10px 14px;
  border-radius: 4px;
  margin-bottom: 20px;
  font-size: 0.9rem;
}
.preview-banner a { color: #78350f; font-weight: 600; text-decoration: underline; }

@media (max-width: 640px) {
  input[type="text"],
  input[type="email"],
  input[type="password"],
  input[type="url"],
  textarea,
  select {
    font-size: 16px;
  }
  .btn { min-height: 44px; padding: 12px 18px; }
}