/*
Theme Name: Pulso Tributario
Theme URI: https://pulsotributario.com
Author: Pulso Tributario / Facturandola
Author URI: https://facturandola.com
Description: Tema editorial ultra-ligero y optimizado para SEO fiscal en México, alineado con el ecosistema de Facturandola.com.
Version: 1.0.0
Requires at least: 6.6
Tested up to: 7.1
Requires PHP: 8.2
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: pulsotributario
*/

@font-face {
  font-family: 'Product Sans';
  src: url('./assets/fonts/product-sans-regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Product Sans';
  src: url('./assets/fonts/product-sans-italic.woff2') format('woff2');
  font-weight: 400;
  font-style: italic;
  font-display: swap;
}

@font-face {
  font-family: 'Product Sans';
  src: url('./assets/fonts/product-sans-bold.woff2') format('woff2');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

:root {
  --pt-primary: #0284C7;
  --pt-primary-hover: #0369A1;
  --pt-primary-soft: #F0F9FF;
  --pt-primary-border: #BAE6FD;
  --pt-navy: #154360;
  --pt-green: #10B981;
  --pt-green-hover: #059669;
  --pt-green-soft: #ECFDF5;
  --pt-teal: #1abc9c;

  --pt-bg: #F8FAFC;
  --pt-surface: #FFFFFF;
  --pt-surface-alt: #F1F5F9;
  --pt-text: #0F172A;
  --pt-text-secondary: #334155;
  --pt-text-muted: #64748B;
  --pt-border: #E2E8F0;
  --pt-shadow: 0 1px 3px rgba(15, 23, 42, 0.06), 0 1px 2px rgba(15, 23, 42, 0.04);
  --pt-shadow-md: 0 8px 24px rgba(15, 23, 42, 0.07);
  --pt-radius: 12px;
  --pt-radius-sm: 8px;
  --pt-font: 'Product Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --pt-container: 1240px;
}

[data-theme="dark"] {
  --pt-primary: #38BDF8;
  --pt-primary-hover: #7DD3FC;
  --pt-primary-soft: rgba(56, 189, 248, 0.12);
  --pt-primary-border: rgba(56, 189, 248, 0.28);
  --pt-green-soft: rgba(16, 185, 129, 0.14);

  --pt-bg: #0F172A;
  --pt-surface: #1E293B;
  --pt-surface-alt: #0B132B;
  --pt-text: #F8FAFC;
  --pt-text-secondary: #CBD5E1;
  --pt-text-muted: #94A3B8;
  --pt-border: #334155;
  --pt-shadow: 0 1px 3px rgba(2, 6, 23, 0.45);
  --pt-shadow-md: 0 10px 28px rgba(2, 6, 23, 0.5);
}

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

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

body {
  margin: 0;
  font-family: var(--pt-font);
  font-size: 16px;
  line-height: 1.65;
  color: var(--pt-text);
  background-color: var(--pt-bg);
  transition: background-color 0.2s ease, color 0.2s ease;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--pt-primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--pt-primary);
  color: #fff;
  padding: 0.75rem 1.25rem;
  z-index: 999;
  font-weight: 700;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
  border-radius: var(--pt-radius-sm);
}

.pt-container {
  width: 100%;
  max-width: var(--pt-container);
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Header */
.pt-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--pt-surface);
  border-bottom: 1px solid var(--pt-border);
  box-shadow: var(--pt-shadow);
}

.pt-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 70px;
}

.pt-brand {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}

.pt-brand img {
  height: 30px;
  width: auto;
}

.pt-logo-light { display: none; }
.pt-logo-dark { display: block; }
[data-theme="dark"] .pt-logo-light { display: block; }
[data-theme="dark"] .pt-logo-dark { display: none; }

.pt-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.pt-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  gap: 0.25rem;
  flex-wrap: wrap;
}

.pt-nav a {
  display: inline-block;
  padding: 0.45rem 0.75rem;
  color: var(--pt-text-secondary);
  font-weight: 700;
  font-size: 0.94rem;
  border-radius: var(--pt-radius-sm);
  transition: background-color 0.15s ease, color 0.15s ease;
}

.pt-nav a:hover,
.pt-nav .current-menu-item > a {
  color: var(--pt-primary);
  background: var(--pt-primary-soft);
  text-decoration: none;
}

.pt-header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.pt-icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: var(--pt-radius-sm);
  border: 1px solid var(--pt-border);
  background: var(--pt-surface);
  color: var(--pt-text-secondary);
  cursor: pointer;
  transition: border-color 0.15s ease, color 0.15s ease, background-color 0.15s ease;
}

.pt-icon-btn:hover {
  border-color: var(--pt-primary);
  color: var(--pt-primary);
}

.pt-header-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 0.95rem;
  background: var(--pt-green);
  color: #FFFFFF;
  font-weight: 700;
  font-size: 0.88rem;
  border-radius: var(--pt-radius-sm);
  white-space: nowrap;
  transition: background-color 0.15s ease, transform 0.15s ease;
}

.pt-header-cta:hover {
  background: var(--pt-green-hover);
  text-decoration: none;
  transform: translateY(-1px);
}

.pt-menu-toggle {
  display: none;
}

.pt-search-bar {
  display: none;
  border-top: 1px solid var(--pt-border);
  padding: 0.75rem 0;
  background: var(--pt-surface);
}

.pt-search-bar.is-open {
  display: block;
}

.pt-search-form {
  display: flex;
  gap: 0.5rem;
}

.pt-search-form input[type="search"] {
  flex: 1;
  padding: 0.6rem 0.9rem;
  border: 1px solid var(--pt-border);
  border-radius: var(--pt-radius-sm);
  background: var(--pt-bg);
  color: var(--pt-text);
  font-family: var(--pt-font);
  font-size: 0.95rem;
}

.pt-search-form button {
  padding: 0.6rem 1.1rem;
  background: var(--pt-primary);
  color: #FFFFFF;
  border: 0;
  border-radius: var(--pt-radius-sm);
  font-family: var(--pt-font);
  font-weight: 700;
  cursor: pointer;
}

/* Main 2-column layout */
.pt-main {
  padding: 2rem 0 3.5rem;
}

.pt-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 330px;
  gap: 2rem;
  align-items: start;
}

.pt-content-col {
  min-width: 0;
}

/* Hero / Featured Post on Home */
.pt-hero {
  background: var(--pt-surface);
  border: 1px solid var(--pt-border);
  border-radius: var(--pt-radius);
  overflow: hidden;
  box-shadow: var(--pt-shadow);
  margin-bottom: 2rem;
  display: grid;
  grid-template-columns: 1.15fr 1fr;
}

.pt-hero-media {
  position: relative;
  min-height: 280px;
  background: var(--pt-surface-alt);
}

.pt-hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.pt-hero-body {
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.75rem;
}

.pt-badge {
  display: inline-block;
  width: fit-content;
  padding: 0.2rem 0.65rem;
  font-size: 0.78rem;
  font-weight: 700;
  border-radius: 999px;
  background: var(--pt-primary-soft);
  color: var(--pt-primary);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.pt-badge:hover {
  text-decoration: none;
  opacity: 0.9;
}

.pt-hero-title {
  margin: 0;
  font-size: clamp(1.45rem, 2.2vw, 1.9rem);
  line-height: 1.2;
}

.pt-hero-title a {
  color: var(--pt-text);
}

.pt-hero-title a:hover {
  color: var(--pt-primary);
  text-decoration: none;
}

.pt-excerpt {
  margin: 0;
  color: var(--pt-text-secondary);
  font-size: 0.96rem;
}

.pt-meta-line {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem;
  font-size: 0.84rem;
  color: var(--pt-text-muted);
}

/* Post Grid */
.pt-section-title {
  margin: 0 0 1rem;
  font-size: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.pt-section-title::before {
  content: "";
  width: 4px;
  height: 1.15em;
  background: var(--pt-green);
  border-radius: 4px;
}

.pt-posts-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.35rem;
}

.pt-card {
  background: var(--pt-surface);
  border: 1px solid var(--pt-border);
  border-radius: var(--pt-radius);
  overflow: hidden;
  box-shadow: var(--pt-shadow);
  display: flex;
  flex-direction: column;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.pt-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--pt-shadow-md);
  border-color: var(--pt-primary-border);
}

.pt-card-thumb {
  display: block;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--pt-surface-alt);
}

.pt-card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.pt-card-body {
  padding: 1.15rem 1.25rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  flex: 1;
}

.pt-card-title {
  margin: 0;
  font-size: 1.12rem;
  line-height: 1.3;
}

.pt-card-title a {
  color: var(--pt-text);
}

.pt-card-title a:hover {
  color: var(--pt-primary);
  text-decoration: none;
}

.pt-card-footer {
  margin-top: auto;
  padding-top: 0.5rem;
}

/* Breadcrumbs */
.pt-breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  color: var(--pt-text-muted);
  margin-bottom: 1rem;
}

.pt-breadcrumbs a {
  color: var(--pt-text-secondary);
}

.pt-breadcrumbs span[aria-hidden="true"] {
  opacity: 0.55;
}

/* Single Article */
.pt-article {
  background: var(--pt-surface);
  border: 1px solid var(--pt-border);
  border-radius: var(--pt-radius);
  padding: 2rem;
  box-shadow: var(--pt-shadow);
}

.pt-article-header {
  margin-bottom: 1.5rem;
}

.pt-article-title {
  margin: 0.65rem 0 0.9rem;
  font-size: clamp(1.7rem, 3vw, 2.35rem);
  line-height: 1.18;
  letter-spacing: -0.015em;
}

.pt-article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 1rem;
  padding: 0.75rem 0;
  border-top: 1px solid var(--pt-border);
  border-bottom: 1px solid var(--pt-border);
  font-size: 0.88rem;
  color: var(--pt-text-muted);
}

.pt-article-meta strong {
  color: var(--pt-text);
}

.pt-featured-image {
  margin: 0 0 1.75rem;
  border-radius: var(--pt-radius-sm);
  overflow: hidden;
  background: var(--pt-surface-alt);
}

.pt-featured-image img {
  width: 100%;
  height: auto;
}

.pt-entry-content {
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--pt-text-secondary);
}

.pt-entry-content h2,
.pt-entry-content h3,
.pt-entry-content h4 {
  color: var(--pt-text);
  margin: 1.85rem 0 0.75rem;
  line-height: 1.28;
  scroll-margin-top: 90px;
}

.pt-entry-content h2 { font-size: 1.5rem; }
.pt-entry-content h3 { font-size: 1.22rem; }

.pt-entry-content p {
  margin: 0 0 1.2rem;
}

.pt-entry-content ul,
.pt-entry-content ol {
  margin: 0 0 1.25rem;
  padding-left: 1.4rem;
}

.pt-entry-content li {
  margin-bottom: 0.4rem;
}

.pt-entry-content blockquote {
  margin: 1.5rem 0;
  padding: 1rem 1.25rem;
  border-left: 4px solid var(--pt-primary);
  background: var(--pt-primary-soft);
  border-radius: 0 var(--pt-radius-sm) var(--pt-radius-sm) 0;
  color: var(--pt-text);
}

.pt-entry-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.94rem;
}

.pt-entry-content th,
.pt-entry-content td {
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--pt-border);
  text-align: left;
}

.pt-entry-content th {
  background: var(--pt-surface-alt);
  color: var(--pt-text);
}

/* Tags & Share */
.pt-article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 2rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--pt-border);
}

.pt-tag-chip {
  display: inline-block;
  padding: 0.28rem 0.7rem;
  font-size: 0.82rem;
  background: var(--pt-surface-alt);
  color: var(--pt-text-secondary);
  border: 1px solid var(--pt-border);
  border-radius: 999px;
}

.pt-tag-chip:hover {
  border-color: var(--pt-primary);
  color: var(--pt-primary);
  text-decoration: none;
}

.pt-share-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1.25rem;
}

.pt-share-label {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--pt-text-muted);
  margin-right: 0.25rem;
}

.pt-share-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.8rem;
  font-size: 0.82rem;
  font-weight: 700;
  border-radius: var(--pt-radius-sm);
  border: 1px solid var(--pt-border);
  background: var(--pt-surface-alt);
  color: var(--pt-text-secondary);
  cursor: pointer;
  font-family: var(--pt-font);
}

.pt-share-btn:hover {
  border-color: var(--pt-primary);
  color: var(--pt-primary);
  text-decoration: none;
}

/* Author Box (E-E-A-T) */
.pt-author-box {
  margin-top: 1.75rem;
  padding: 1.35rem;
  background: var(--pt-surface-alt);
  border: 1px solid var(--pt-border);
  border-radius: var(--pt-radius);
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.pt-author-avatar {
  border-radius: 50%;
  flex-shrink: 0;
}

.pt-author-name {
  margin: 0 0 0.25rem;
  font-size: 1rem;
}

.pt-author-bio {
  margin: 0;
  font-size: 0.9rem;
  color: var(--pt-text-secondary);
}

/* Facturandola CTA Card */
.pt-cta-box {
  background: linear-gradient(135deg, var(--pt-primary-soft) 0%, var(--pt-green-soft) 100%);
  border: 1px solid var(--pt-primary-border);
  border-radius: var(--pt-radius);
  padding: 1.35rem;
  margin-top: 1.75rem;
}

.pt-cta-eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--pt-green);
  margin-bottom: 0.35rem;
}

.pt-cta-title {
  margin: 0 0 0.45rem;
  font-size: 1.15rem;
  line-height: 1.3;
  color: var(--pt-text);
}

.pt-cta-text {
  margin: 0 0 1rem;
  font-size: 0.92rem;
  color: var(--pt-text-secondary);
}

.pt-btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.65rem 1.15rem;
  background: var(--pt-green);
  color: #FFFFFF;
  font-weight: 700;
  font-size: 0.92rem;
  border-radius: var(--pt-radius-sm);
  transition: background-color 0.15s ease;
}

.pt-btn-primary:hover {
  background: var(--pt-green-hover);
  text-decoration: none;
}

/* Sidebar */
.pt-sidebar {
  position: sticky;
  top: 88px;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.pt-widget {
  background: var(--pt-surface);
  border: 1px solid var(--pt-border);
  border-radius: var(--pt-radius);
  padding: 1.25rem;
  box-shadow: var(--pt-shadow);
}

.pt-widget .pt-cta-box {
  margin-top: 0;
}

.pt-widget-title {
  margin: 0 0 0.85rem;
  font-size: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--pt-border);
}

.pt-toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  font-size: 0.88rem;
}

.pt-toc-list li.pt-toc-h3 {
  padding-left: 0.85rem;
  font-size: 0.84rem;
}

.pt-toc-list a {
  color: var(--pt-text-secondary);
  display: block;
  padding: 0.2rem 0.45rem;
  border-left: 2px solid transparent;
  border-radius: 0 4px 4px 0;
}

.pt-toc-list a:hover,
.pt-toc-list a.is-active {
  color: var(--pt-primary);
  border-left-color: var(--pt-primary);
  background: var(--pt-primary-soft);
  text-decoration: none;
}

.pt-recent-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.pt-recent-item a {
  font-weight: 700;
  font-size: 0.92rem;
  color: var(--pt-text);
  line-height: 1.35;
  display: block;
}

.pt-recent-item a:hover {
  color: var(--pt-primary);
}

.pt-recent-date {
  font-size: 0.78rem;
  color: var(--pt-text-muted);
}

/* Archive Header */
.pt-archive-header {
  background: var(--pt-surface);
  border: 1px solid var(--pt-border);
  border-radius: var(--pt-radius);
  padding: 1.5rem 1.75rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--pt-shadow);
}

.pt-archive-header h1 {
  margin: 0 0 0.4rem;
  font-size: clamp(1.5rem, 2.4vw, 2rem);
}

.pt-archive-desc {
  color: var(--pt-text-secondary);
  font-size: 0.96rem;
}

.pt-archive-desc p:last-child {
  margin-bottom: 0;
}

/* Related Posts */
.pt-related {
  margin-top: 2.25rem;
}

/* Pagination */
.pt-pagination {
  margin-top: 2rem;
  display: flex;
  justify-content: center;
  gap: 0.45rem;
  flex-wrap: wrap;
}

.pt-pagination .page-numbers {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 38px;
  height: 38px;
  padding: 0 0.75rem;
  background: var(--pt-surface);
  border: 1px solid var(--pt-border);
  border-radius: var(--pt-radius-sm);
  color: var(--pt-text-secondary);
  font-weight: 700;
  font-size: 0.9rem;
}

.pt-pagination .page-numbers.current,
.pt-pagination .page-numbers:hover {
  background: var(--pt-primary);
  border-color: var(--pt-primary);
  color: #FFFFFF;
  text-decoration: none;
}

/* Footer */
.pt-footer {
  background: #0F172A;
  color: #CBD5E1;
  padding: 2.75rem 0 2rem;
  border-top: 1px solid #1E293B;
}

.pt-footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}

.pt-footer-logo {
  height: 28px;
  width: auto;
  margin-bottom: 0.75rem;
}

.pt-footer p {
  margin: 0;
  font-size: 0.9rem;
  color: #94A3B8;
  max-width: 42ch;
}

.pt-footer h3 {
  margin: 0 0 0.75rem;
  font-size: 0.95rem;
  color: #FFFFFF;
}

.pt-footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  font-size: 0.9rem;
}

.pt-footer a {
  color: #CBD5E1;
}

.pt-footer a:hover {
  color: #1abc9c;
}

.pt-footer-bottom {
  padding-top: 1.25rem;
  border-top: 1px solid #1E293B;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem;
  font-size: 0.84rem;
  color: #94A3B8;
}

/* Responsive */
@media (max-width: 980px) {
  .pt-layout {
    grid-template-columns: 1fr;
  }
  .pt-sidebar {
    position: static;
  }
  .pt-hero {
    grid-template-columns: 1fr;
  }
  .pt-footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .pt-menu-toggle {
    display: inline-flex;
  }
  .pt-nav {
    display: none;
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--pt-surface);
    border-bottom: 1px solid var(--pt-border);
    padding: 0.75rem 1.25rem 1rem;
    box-shadow: var(--pt-shadow-md);
  }
  .pt-nav.is-open {
    display: block;
  }
  .pt-nav ul {
    flex-direction: column;
    align-items: stretch;
  }
  .pt-header-cta {
    display: none;
  }
  .pt-posts-grid {
    grid-template-columns: 1fr;
  }
  .pt-article {
    padding: 1.25rem;
  }
  .pt-footer-grid {
    grid-template-columns: 1fr;
  }
}