/* ==========================================================================
   CSS Variables
   ========================================================================== */

:root {
  /* Typography - Using system fonts by default (defined in fonts.css) */
  /* These will be overridden by fonts.css custom properties */
  --font-primary: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-secondary: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-headings: Avenir, "Avenir Next LT Pro", Montserrat, Corbel, "URW Gothic", source-sans-pro, sans-serif;
  --font-code: "Consolas", "Monaco", "Courier New", Courier, monospace;

  /* Font Sizes - Fluid typography scale */
  --font-size-xs: 0.75rem;     /* 12px */
  --font-size-sm: 0.875rem;    /* 14px */
  --font-size-base: 1rem;      /* 16px */
  --font-size-lg: 1.125rem;    /* 18px */
  --font-size-xl: 1.25rem;     /* 20px */
  --font-size-2xl: 1.5rem;     /* 24px */
  --font-size-3xl: 1.875rem;   /* 30px */
  --font-size-4xl: 2.25rem;    /* 36px */

  /* Line Heights */
  --line-height-none: 1;
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;
  --line-height-loose: 2;

  /* Font Weights */
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  /* Colors - WCAG AA compliant (minimum 4.5:1 contrast ratio) */
  --color-primary: #0056b3;      /* Contrast ratio 7.53:1 against white */
  --color-secondary: #5a6268;    /* Contrast ratio 7.04:1 against white */
  --color-success: #1e7e34;      /* Contrast ratio 5.91:1 against white */
  --color-danger: #c81e1e;       /* Contrast ratio 6.12:1 against white */
  --color-warning: #856404;      /* Contrast ratio 7.51:1 against white */
  --color-info: #117a8b;         /* Contrast ratio 5.34:1 against white */
  --color-light: #f8f9fa;
  --color-dark: #212529;
  --color-text: #212529;         /* Contrast ratio 15.52:1 against white */
  --color-bg: #ffffff;

  /* APU Template Colors (from apus-theme-template/css/style.css) */
  --color-navy-dark: #0E2337;
  --color-navy-primary: #1e3a5f;
  --color-navy-light: #2c5282;
  --color-orange-primary: #FF8600;
  --color-orange-hover: #FF6B35;
  --color-orange-light: #FFB800;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-xxl: 3rem;

  /* Header specific variables */
  --header-height: 70px;
  --header-bg: #ffffff;
  --header-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);

  /* Z-index scale */
  --z-header: 1000;
  --z-mobile-menu: 999;
  --z-overlay: 998;
}

/* ==========================================================================
   Reset & Base Styles
   ========================================================================== */

* {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-primary);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
}

/* ==========================================================================
   Typography
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
  margin-top: 0;
  margin-bottom: 0.5em;
  font-family: var(--font-headings);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
  margin-top: 0;
  margin-bottom: 1rem;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: #003d82;  /* Darker blue for better contrast - 9.52:1 */
  text-decoration: underline;
}

a:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

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

/* ==========================================================================
   Screen Reader Text
   ========================================================================== */

.screen-reader-text {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(1px, 1px, 1px, 1px);
  clip-path: inset(50%);
  white-space: nowrap;
}

.screen-reader-text:focus {
  position: fixed;
  top: 0;
  left: 0;
  width: auto;
  height: auto;
  padding: 1rem;
  background: #000;
  color: #fff;
  z-index: 100000;
  clip: auto;
  clip-path: none;
}

/* ==========================================================================
   Skip Link
   ========================================================================== */

.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: #000;
  color: #fff;
  padding: 0.5rem 1rem;
  z-index: 100000;
  text-decoration: none;
}

.skip-link:focus {
  top: 0;
  outline: 2px solid #fff;
  outline-offset: 2px;
}

/* ==========================================================================
   Site Structure
   ========================================================================== */

.site {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.site-main {
  flex-grow: 1;
}

/* ==========================================================================
   Content Wrapper
   ========================================================================== */

.content-wrapper {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-xl);
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xl);
}

@media (min-width: 768px) {
  .content-wrapper {
    grid-template-columns: 2fr 1fr;
  }
}

#primary {
  min-width: 0;
}

/* ==========================================================================
   Single Post & Page Styles
   ========================================================================== */

.post-thumbnail {
  margin-bottom: var(--spacing-xl);
  overflow: hidden;
  border-radius: 8px;
}

.post-thumbnail img {
  width: 100%;
  height: auto;
  display: block;
}

.entry-header {
  margin-bottom: var(--spacing-xl);
}

.entry-title {
  margin-bottom: var(--spacing-md);
  color: var(--color-dark);
}

.entry-categories {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
  margin-bottom: var(--spacing-md);
}

.category-badge {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-sm);
  background-color: var(--color-primary);
  color: #fff;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: 4px;
  text-decoration: none;
  transition: background-color 0.3s ease;
}

.category-badge:hover {
  background-color: #003d82;  /* Darker for better contrast */
  text-decoration: none;
}

.entry-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  font-size: 0.875rem;
  color: var(--color-secondary);
  margin-bottom: var(--spacing-lg);
}

.entry-meta time {
  display: block;
}

.entry-meta .updated {
  display: block;
  margin-top: var(--spacing-xs);
  font-size: 0.8125rem;
}

.entry-content {
  line-height: 1.8;
  margin-bottom: var(--spacing-xl);
}

.entry-content > * + * {
  margin-top: var(--spacing-md);
}

.entry-content img {
  border-radius: 4px;
  margin: var(--spacing-lg) 0;
}

.entry-footer {
  padding-top: var(--spacing-lg);
  border-top: 1px solid #e9ecef;
  margin-top: var(--spacing-xl);
}

.tags-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  align-items: center;
  margin-bottom: var(--spacing-md);
}

.tags-label {
  font-weight: 600;
  color: var(--color-dark);
}

.tags-list a {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-sm);
  background-color: var(--color-light);
  color: var(--color-dark);
  font-size: 0.875rem;
  border-radius: 4px;
  text-decoration: none;
  transition: background-color 0.3s ease;
}

.tags-list a:hover {
  background-color: #e2e6ea;
  text-decoration: none;
}

.edit-link a {
  color: var(--color-secondary);
  font-size: 0.875rem;
}

/* ==========================================================================
   Archive Styles
   ========================================================================== */

.page-header {
  margin-bottom: var(--spacing-xxl);
  padding-bottom: var(--spacing-lg);
  border-bottom: 2px solid var(--color-primary);
}

.page-title {
  margin-bottom: var(--spacing-md);
  color: var(--color-dark);
}

.archive-description {
  color: var(--color-secondary);
  font-size: 1.125rem;
  line-height: 1.6;
}

.archive-posts {
  display: grid;
  gap: var(--spacing-xxl);
  margin-bottom: var(--spacing-xxl);
}

.archive-posts article {
  display: grid;
  gap: var(--spacing-lg);
}

@media (min-width: 768px) {
  .archive-posts article {
    grid-template-columns: 300px 1fr;
  }
}

.archive-posts .post-thumbnail {
  margin-bottom: 0;
}

.archive-posts .entry-summary {
  color: var(--color-text);
  line-height: 1.6;
}

.read-more-link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: none;
  margin-top: var(--spacing-md);
}

.read-more-link:hover {
  text-decoration: underline;
}

.read-more-icon {
  transition: transform 0.3s ease;
}

.read-more-link:hover .read-more-icon {
  transform: translateX(4px);
}

/* ==========================================================================
   Pagination
   ========================================================================== */

.pagination,
.posts-pagination {
  margin-top: var(--spacing-xxl);
  margin-bottom: var(--spacing-xxl);
}

.nav-links {
  display: flex;
  justify-content: center;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.nav-links .page-numbers {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  padding: var(--spacing-xs) var(--spacing-sm);
  border: 1px solid #dee2e6;
  border-radius: 4px;
  color: var(--color-primary);
  text-decoration: none;
  transition: all 0.3s ease;
}

.nav-links .page-numbers:hover {
  background-color: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
  text-decoration: none;
}

.nav-links .page-numbers.current {
  background-color: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.nav-links .page-numbers.dots {
  border: none;
}

/* ==========================================================================
   Post Navigation
   ========================================================================== */

.post-navigation {
  margin-top: var(--spacing-xxl);
  padding-top: var(--spacing-xl);
  border-top: 1px solid #e9ecef;
}

.post-navigation .nav-links {
  display: grid;
  gap: var(--spacing-lg);
}

@media (min-width: 768px) {
  .post-navigation .nav-links {
    grid-template-columns: 1fr 1fr;
  }
}

.post-navigation a {
  display: block;
  padding: var(--spacing-lg);
  border: 1px solid #dee2e6;
  border-radius: 4px;
  text-decoration: none;
  transition: all 0.3s ease;
}

.post-navigation a:hover {
  border-color: var(--color-primary);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  text-decoration: none;
}

.nav-subtitle {
  display: block;
  font-size: 0.875rem;
  color: var(--color-secondary);
  margin-bottom: var(--spacing-xs);
}

.nav-title {
  display: block;
  font-weight: 600;
  color: var(--color-dark);
}

/* ==========================================================================
   404 Error Page
   ========================================================================== */

.error-404 {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
  padding: var(--spacing-xxl) var(--spacing-lg);
}

.error-404 .page-header {
  border-bottom: none;
  margin-bottom: var(--spacing-xl);
}

.error-404 .page-title {
  font-size: 3rem;
  color: var(--color-primary);
}

.error-message {
  font-size: 1.125rem;
  color: var(--color-secondary);
  margin-bottom: var(--spacing-xxl);
}

.error-actions {
  text-align: left;
}

.error-actions h2,
.error-actions h3 {
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
}

.error-suggestions,
.recent-posts-list,
.categories-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.error-suggestions li,
.recent-posts-list li,
.categories-list li {
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid #e9ecef;
}

.error-suggestions li:last-child,
.recent-posts-list li:last-child,
.categories-list li:last-child {
  border-bottom: none;
}

.category-count {
  color: var(--color-secondary);
  font-size: 0.875rem;
  margin-left: var(--spacing-xs);
}

.recent-posts-section,
.categories-section {
  margin-top: var(--spacing-xl);
}

/* ==========================================================================
   Front Page
   ========================================================================== */

.front-page .hero-section {
  margin-bottom: var(--spacing-xxl);
  border-radius: 8px;
  overflow: hidden;
}

.front-page .hero-section img {
  width: 100%;
  height: auto;
  max-height: 500px;
  object-fit: cover;
}

/* ==========================================================================
   Page Links (Paginated Posts)
   ========================================================================== */

.page-links {
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-lg);
  border-top: 1px solid #e9ecef;
  font-weight: 600;
}

.page-links a {
  display: inline-block;
  margin: 0 var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
  border: 1px solid #dee2e6;
  border-radius: 4px;
  text-decoration: none;
}

.page-links a:hover {
  background-color: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
  text-decoration: none;
}

/* ==========================================================================
   Responsive Media
   ========================================================================== */

@media (max-width: 767px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.75rem; }
  h3 { font-size: 1.5rem; }
  h4 { font-size: 1.25rem; }

  .content-wrapper {
    padding: var(--spacing-md);
    grid-template-columns: 1fr;
  }

  .archive-posts article {
    grid-template-columns: 1fr;
  }

  .error-404 .page-title {
    font-size: 2rem;
  }
}

/* ==========================================================================
   TOP NOTIFICATION BAR (from apus-theme-template/css/style.css lines 57-80)
   ========================================================================== */

.top-notification-bar {
  background-color: var(--color-navy-dark);
  color: #ffffff;
  padding: 0.5rem 0;
  font-size: 0.9rem;
  text-align: center;
}

.top-notification-bar strong {
  color: var(--color-orange-primary);
}

.top-notification-bar i {
  color: var(--color-orange-primary);
}

.top-notification-bar a {
  color: #ffffff;
  transition: color 0.3s ease;
}

.top-notification-bar a:hover {
  color: var(--color-orange-primary);
}

/* === NAVBAR === */

.navbar {
    position: sticky;
    top: 0;
    z-index: 1030;
    background-color: var(--color-navy-primary) !important;
    box-shadow: 0 4px 12px rgba(30, 58, 95, 0.15);
    padding: 0.75rem 0;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    box-shadow: 0 6px 20px rgba(30, 58, 95, 0.25);
}

.navbar-brand {
    color: #ffffff !important;
    font-weight: 700;
    font-size: 1.5rem;
    transition: color 0.3s ease;
}

.navbar-brand:hover {
    color: var(--color-orange-primary) !important;
}

.nav-link {
    color: rgba(255, 255, 255, 0.9) !important;
    font-weight: 500;
    position: relative;
    padding: 0.5rem 0.65rem !important;
    transition: all 0.3s ease;
    font-size: 0.9rem;
    white-space: nowrap;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 80%;
    height: 2px;
    background: var(--color-orange-primary);
    transition: transform 0.3s ease;
}

.nav-link:hover {
    color: var(--color-orange-primary) !important;
    background-color: rgba(255, 133, 0, 0.1);
    border-radius: 4px;
}

.nav-link:hover::after {
    transform: translateX(-50%) scaleX(1);
}

.dropdown-menu {
    background: #ffffff;
    border: none;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    border-radius: 8px;
    padding: 0.5rem 0;
}

.dropdown-item {
    color: var(--color-neutral-600);
    padding: 0.625rem 1.25rem;
    transition: all 0.3s ease;
    font-weight: 500;
}

.dropdown-item:hover {
    background-color: rgba(255, 133, 0, 0.1);
    color: var(--color-orange-primary);
}

/* === BOTÓN LET'S TALK === */

.btn-lets-talk {
    background-color: var(--color-orange-primary) !important;
    color: #ffffff !important;
    font-weight: 600;
    padding: 0.5rem 1.5rem;
    border: none;
    border-radius: 6px;
    transition: all 0.3s ease;
}

.btn-lets-talk:hover {
    background-color: var(--color-orange-hover) !important;
    color: #ffffff !important;
}

.btn-lets-talk i {
    color: #ffffff;
}