/* =============================================
   WEPAAA.XYZ — Design System
   ¡El blog para colitas felices y vidas con energía!
   ============================================= */

/* --- TOKENS --- */
:root {
  --clr-yellow:   #FFC107;
  --clr-orange:   #FF6B35;
  --clr-navy:     #1A3C5E;
  --clr-navy-mid: #2B5278;
  --clr-bg:       #F8F9FA;
  --clr-white:    #FFFFFF;
  --clr-gray-1:   #F2F3F5;
  --clr-gray-2:   #E0E3E8;
  --clr-gray-3:   #9AA3B0;
  --clr-text:     #1C2B3A;
  --clr-text-muted: #5A6572;

  --ff-display: 'Nunito', sans-serif;
  --ff-body:    'Inter', sans-serif;

  --fs-xs:   0.75rem;
  --fs-sm:   0.875rem;
  --fs-base: 1rem;
  --fs-lg:   1.125rem;
  --fs-xl:   1.375rem;
  --fs-2xl:  1.75rem;
  --fs-3xl:  2.25rem;
  --fs-4xl:  3rem;

  --fw-regular: 400;
  --fw-medium:  500;
  --fw-semibold:600;
  --fw-bold:    700;
  --fw-extrabold:800;

  --radius-sm:  6px;
  --radius-md:  12px;
  --radius-lg:  20px;
  --radius-full:9999px;

  --shadow-sm:  0 1px 3px rgba(26,60,94,.08);
  --shadow-md:  0 4px 16px rgba(26,60,94,.12);
  --shadow-lg:  0 8px 32px rgba(26,60,94,.16);

  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;

  --transition: 200ms ease;
  --max-w: 1200px;
  --content-w: 780px;
}

/* --- RESET & BASE --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--ff-body);
  font-size: var(--fs-base);
  color: var(--clr-text);
  background: var(--clr-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; height: auto; }
a   { color: inherit; text-decoration: none; }
ul  { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* --- TYPOGRAPHY --- */
h1,h2,h3,h4,h5 {
  font-family: var(--ff-display);
  font-weight: var(--fw-extrabold);
  line-height: 1.2;
  color: var(--clr-navy);
}

/* --- UTILITIES --- */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: var(--space-5);
}

.section-label {
  display: inline-block;
  font-family: var(--ff-display);
  font-size: var(--fs-xs);
  font-weight: var(--fw-bold);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--clr-orange);
  margin-bottom: var(--space-3);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full);
  font-family: var(--ff-display);
  font-weight: var(--fw-bold);
  font-size: var(--fs-sm);
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--clr-yellow);
  color: var(--clr-navy);
}
.btn-primary:hover {
  background: var(--clr-orange);
  color: var(--clr-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  border: 2px solid var(--clr-navy);
  color: var(--clr-navy);
  background: transparent;
}
.btn-outline:hover {
  background: var(--clr-navy);
  color: var(--clr-white);
  transform: translateY(-2px);
}

.btn-white {
  background: var(--clr-white);
  color: var(--clr-navy);
}
.btn-white:hover {
  background: var(--clr-yellow);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* =============================================
   AD PLACEHOLDERS
   ============================================= */
.ad-placeholder {
  background: var(--clr-gray-1);
  border: 2px dashed var(--clr-gray-2);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-gray-3);
  font-size: var(--fs-xs);
  font-weight: var(--fw-medium);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* Leaderboard — 728×90 */
.ad-leaderboard {
  height: 90px;
  max-width: 728px;
  margin-inline: auto;
  margin-block: var(--space-4);
}

/* Sidebar ads — 300×250 */
.ad-sidebar {
  width: 100%;
  max-width: 300px;
  height: 250px;
  margin-bottom: var(--space-6);
}

/* In-article mid-content — 336×280 */
.ad-in-article {
  height: 280px;
  max-width: 336px;
  margin-inline: auto;
  margin-block: var(--space-8);
}

/* Native / high-CPM block */
.ad-native {
  height: 120px;
  width: 100%;
  margin-block: var(--space-8);
  border-radius: var(--radius-lg);
}

/* =============================================
   HEADER / NAV
   ============================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--clr-white);
  box-shadow: var(--shadow-sm);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: var(--space-6);
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-shrink: 0;
}
.logo-icon {
  width: 38px;
  height: 38px;
  background: var(--clr-yellow);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}
.logo-text {
  font-family: var(--ff-display);
  font-weight: var(--fw-extrabold);
  font-size: var(--fs-xl);
  color: var(--clr-navy);
  letter-spacing: -0.03em;
}
.logo-text span { color: var(--clr-orange); }

/* Nav links */
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}
.nav-links a {
  font-family: var(--ff-display);
  font-weight: var(--fw-semibold);
  font-size: var(--fs-sm);
  color: var(--clr-text-muted);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}
.nav-links a:hover, .nav-links a.active {
  color: var(--clr-navy);
  background: var(--clr-gray-1);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

/* Mobile hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  padding: 4px 0;
}
.nav-toggle span {
  height: 2px;
  background: var(--clr-navy);
  border-radius: 2px;
  transition: var(--transition);
}

/* =============================================
   HERO SECTION
   ============================================= */
.hero {
  background: linear-gradient(135deg, var(--clr-navy) 0%, var(--clr-navy-mid) 100%);
  color: var(--clr-white);
  padding-top: var(--space-16);
  padding-bottom: 0;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 70% 50%, rgba(255,193,7,.15) 0%, transparent 60%);
  pointer-events: none;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-10);
  align-items: end;
}

.hero-content { padding-bottom: var(--space-16); }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: rgba(255,193,7,.15);
  border: 1px solid rgba(255,193,7,.3);
  border-radius: var(--radius-full);
  padding: var(--space-1) var(--space-4);
  font-size: var(--fs-xs);
  font-weight: var(--fw-bold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--clr-yellow);
  margin-bottom: var(--space-5);
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  line-height: 1.1;
  color: var(--clr-white);
  margin-bottom: var(--space-5);
}
.hero-title .highlight {
  color: var(--clr-yellow);
  position: relative;
}

.hero-subtitle {
  font-size: var(--fs-lg);
  color: rgba(255,255,255,.75);
  margin-bottom: var(--space-8);
  max-width: 480px;
}

.hero-cta-group {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

/* Hero stats */
.hero-stats {
  display: flex;
  gap: var(--space-8);
  margin-top: var(--space-10);
  padding-top: var(--space-6);
  border-top: 1px solid rgba(255,255,255,.15);
}
.stat-item { text-align: center; }
.stat-value {
  font-family: var(--ff-display);
  font-size: var(--fs-2xl);
  font-weight: var(--fw-extrabold);
  color: var(--clr-yellow);
  display: block;
}
.stat-label {
  font-size: var(--fs-xs);
  color: rgba(255,255,255,.6);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* Hero image placeholder */
.hero-visual {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  position: relative;
}

.hero-dog-card {
  background: rgba(255,255,255,.08);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  width: 100%;
  max-width: 420px;
  aspect-ratio: 4/5;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  color: rgba(255,255,255,.5);
  font-size: 5rem;
  position: relative;
  overflow: hidden;
}

.hero-dog-card::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 40%;
  background: linear-gradient(to top, rgba(255,193,7,.2), transparent);
  pointer-events: none;
}

.hero-dog-emoji {
  font-size: 7rem;
  animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
  0%,100% { transform: translateY(0); }
  50%      { transform: translateY(-14px); }
}

/* Wave divider */
.hero-wave {
  display: block;
  width: 100%;
  margin-top: var(--space-6);
  color: var(--clr-bg);
}

/* =============================================
   SEARCH BAR
   ============================================= */
.search-section {
  background: var(--clr-white);
  padding-block: var(--space-8);
  box-shadow: var(--shadow-sm);
}

.search-bar {
  display: flex;
  align-items: center;
  background: var(--clr-gray-1);
  border: 2px solid var(--clr-gray-2);
  border-radius: var(--radius-full);
  padding: var(--space-2) var(--space-2) var(--space-2) var(--space-5);
  max-width: 600px;
  margin-inline: auto;
  gap: var(--space-3);
  transition: var(--transition);
}
.search-bar:focus-within {
  border-color: var(--clr-yellow);
  background: var(--clr-white);
  box-shadow: 0 0 0 4px rgba(255,193,7,.15);
}

.search-bar input {
  flex: 1;
  border: none;
  background: transparent;
  font-family: var(--ff-body);
  font-size: var(--fs-base);
  color: var(--clr-text);
  outline: none;
}
.search-bar input::placeholder { color: var(--clr-gray-3); }

.search-bar button {
  background: var(--clr-navy);
  color: var(--clr-white);
  border-radius: var(--radius-full);
  padding: var(--space-2) var(--space-5);
  font-family: var(--ff-display);
  font-weight: var(--fw-bold);
  font-size: var(--fs-sm);
  transition: var(--transition);
}
.search-bar button:hover { background: var(--clr-orange); }

.search-tags {
  display: flex;
  gap: var(--space-2);
  justify-content: center;
  flex-wrap: wrap;
  margin-top: var(--space-4);
}
.search-tag {
  padding: var(--space-1) var(--space-3);
  background: var(--clr-gray-1);
  border: 1px solid var(--clr-gray-2);
  border-radius: var(--radius-full);
  font-size: var(--fs-xs);
  font-weight: var(--fw-medium);
  color: var(--clr-text-muted);
  transition: var(--transition);
}
.search-tag:hover {
  background: var(--clr-yellow);
  border-color: var(--clr-yellow);
  color: var(--clr-navy);
  cursor: pointer;
}

/* =============================================
   CATEGORIES STRIP
   ============================================= */
.categories-section {
  padding-block: var(--space-12);
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-10);
}
.section-title {
  font-size: var(--fs-2xl);
  margin-bottom: var(--space-3);
}
.section-desc {
  color: var(--clr-text-muted);
  max-width: 560px;
  margin-inline: auto;
}

.categories-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
}

.category-card {
  border-radius: var(--radius-lg);
  padding: var(--space-8) var(--space-5);
  text-align: center;
  text-decoration: none;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.category-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.category-card--fit    { background: linear-gradient(135deg, #FFF3CD, #FFE082); }
.category-card--nutri  { background: linear-gradient(135deg, #E8F5E9, #A5D6A7); }
.category-card--salud  { background: linear-gradient(135deg, #E3F2FD, #90CAF9); }
.category-card--psico  { background: linear-gradient(135deg, #FCE4EC, #F48FB1); }

.category-icon {
  font-size: 3rem;
  display: block;
  margin-bottom: var(--space-4);
}
.category-name {
  font-family: var(--ff-display);
  font-weight: var(--fw-extrabold);
  font-size: var(--fs-lg);
  color: var(--clr-navy);
  margin-bottom: var(--space-2);
}
.category-desc {
  font-size: var(--fs-sm);
  color: var(--clr-text-muted);
  line-height: 1.5;
}
.category-arrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-family: var(--ff-display);
  font-weight: var(--fw-bold);
  font-size: var(--fs-sm);
  color: var(--clr-navy);
  margin-top: var(--space-4);
}

/* =============================================
   FEATURED ARTICLES
   ============================================= */
.articles-section {
  padding-block: var(--space-12);
  background: var(--clr-white);
}

/* Layout with sidebar */
.articles-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: var(--space-8);
  align-items: start;
}

/* Article card */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}

.article-card {
  background: var(--clr-white);
  border: 1px solid var(--clr-gray-2);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}
.article-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.article-thumb {
  aspect-ratio: 16/9;
  background: var(--clr-gray-1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  position: relative;
  overflow: hidden;
}

.article-body {
  padding: var(--space-5);
}

.article-meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}
.article-cat {
  display: inline-block;
  font-size: var(--fs-xs);
  font-weight: var(--fw-bold);
  padding: 2px var(--space-2);
  border-radius: var(--radius-sm);
  background: var(--clr-yellow);
  color: var(--clr-navy);
}
.article-date {
  font-size: var(--fs-xs);
  color: var(--clr-gray-3);
}

.article-title {
  font-size: var(--fs-lg);
  margin-bottom: var(--space-2);
  color: var(--clr-navy);
  transition: var(--transition);
}
.article-card:hover .article-title { color: var(--clr-orange); }

.article-excerpt {
  font-size: var(--fs-sm);
  color: var(--clr-text-muted);
  line-height: 1.6;
  margin-bottom: var(--space-4);
}

.article-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.author {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.author-avatar {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-full);
  background: var(--clr-yellow);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
}
.author-name {
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  color: var(--clr-text-muted);
}

.read-time {
  font-size: var(--fs-xs);
  color: var(--clr-gray-3);
}

/* Featured card (large) */
.article-card--featured {
  grid-column: span 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
}
.article-card--featured .article-thumb {
  aspect-ratio: auto;
  min-height: 260px;
}
.article-card--featured .article-title { font-size: var(--fs-xl); }

/* Sidebar */
.sidebar {
  position: sticky;
  top: 80px;
}
.sidebar-widget {
  background: var(--clr-gray-1);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  margin-bottom: var(--space-5);
}
.sidebar-widget-title {
  font-size: var(--fs-base);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 2px solid var(--clr-yellow);
}
.sidebar-post {
  display: flex;
  gap: var(--space-3);
  padding-block: var(--space-3);
  border-bottom: 1px solid var(--clr-gray-2);
}
.sidebar-post:last-child { border-bottom: none; }
.sidebar-post-thumb {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-sm);
  background: var(--clr-gray-2);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}
.sidebar-post-title {
  font-family: var(--ff-display);
  font-weight: var(--fw-semibold);
  font-size: var(--fs-sm);
  line-height: 1.4;
  color: var(--clr-navy);
}
.sidebar-post-date {
  font-size: var(--fs-xs);
  color: var(--clr-gray-3);
  margin-top: var(--space-1);
}

/* =============================================
   NEWSLETTER SECTION
   ============================================= */
.newsletter-section {
  background: linear-gradient(135deg, var(--clr-navy), var(--clr-navy-mid));
  padding-block: var(--space-16);
  position: relative;
  overflow: hidden;
}
.newsletter-section::before {
  content: '🐾';
  position: absolute;
  font-size: 12rem;
  opacity: .04;
  right: -2rem;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
}

.newsletter-inner {
  max-width: 600px;
  margin-inline: auto;
  text-align: center;
}
.newsletter-inner h2 {
  color: var(--clr-white);
  font-size: var(--fs-3xl);
  margin-bottom: var(--space-4);
}
.newsletter-inner p {
  color: rgba(255,255,255,.75);
  margin-bottom: var(--space-8);
}

.newsletter-form {
  display: flex;
  gap: var(--space-2);
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.2);
  border-radius: var(--radius-full);
  padding: var(--space-2);
}
.newsletter-form input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--clr-white);
  font-family: var(--ff-body);
  font-size: var(--fs-base);
  padding-left: var(--space-4);
}
.newsletter-form input::placeholder { color: rgba(255,255,255,.5); }

.newsletter-perks {
  display: flex;
  justify-content: center;
  gap: var(--space-6);
  margin-top: var(--space-6);
  flex-wrap: wrap;
}
.perk {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--fs-sm);
  color: rgba(255,255,255,.7);
}

/* =============================================
   FOOTER
   ============================================= */
.site-footer {
  background: var(--clr-navy);
  color: rgba(255,255,255,.85);
  padding-top: var(--space-16);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-10);
  padding-bottom: var(--space-10);
}

.footer-brand p {
  color: rgba(255,255,255,.6);
  font-size: var(--fs-sm);
  margin-top: var(--space-4);
  line-height: 1.7;
  max-width: 280px;
}

.footer-col-title {
  font-family: var(--ff-display);
  font-size: var(--fs-sm);
  font-weight: var(--fw-bold);
  color: var(--clr-white);
  margin-bottom: var(--space-5);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.footer-links li + li { margin-top: var(--space-3); }
.footer-links a {
  font-size: var(--fs-sm);
  color: rgba(255,255,255,.6);
  transition: var(--transition);
}
.footer-links a:hover { color: var(--clr-yellow); }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding-block: var(--space-5);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
}
.footer-bottom p {
  font-size: var(--fs-xs);
  color: rgba(255,255,255,.4);
}
.footer-legal {
  display: flex;
  gap: var(--space-4);
}
.footer-legal a {
  font-size: var(--fs-xs);
  color: rgba(255,255,255,.4);
  transition: var(--transition);
}
.footer-legal a:hover { color: var(--clr-yellow); }

/* =============================================
   MOBILE RESPONSIVE
   ============================================= */
@media (max-width: 1024px) {
  .categories-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid     { grid-template-columns: 1fr 1fr; }
  .articles-layout { grid-template-columns: 1fr; }
  .sidebar         { position: static; }
  .ad-sidebar      { max-width: 100%; height: 120px; }
}

@media (max-width: 768px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual { display: none; }
  .hero-content { padding-bottom: var(--space-12); }
  .hero-stats { gap: var(--space-5); }

  .nav-links, .nav-actions .btn { display: none; }
  .nav-toggle { display: flex; }

  .articles-grid { grid-template-columns: 1fr; }
  .article-card--featured {
    grid-column: span 1;
    grid-template-columns: 1fr;
  }
  .article-card--featured .article-thumb { min-height: 200px; }

  .footer-grid { grid-template-columns: 1fr; gap: var(--space-6); }
  .footer-bottom { flex-direction: column; text-align: center; }

  .ad-leaderboard { height: 60px; max-width: 320px; }

  .categories-grid { grid-template-columns: 1fr 1fr; gap: var(--space-3); }
}

@media (max-width: 480px) {
  :root { --space-5: 1rem; }
  .hero-title { font-size: 1.75rem; }
  .categories-grid { grid-template-columns: 1fr; }
  .hero-cta-group { flex-direction: column; }
  .newsletter-form { flex-direction: column; border-radius: var(--radius-lg); }
  .newsletter-form input { padding: var(--space-3) var(--space-4); }
}

/* =============================================
   REDUCED MOTION
   ============================================= */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

/* =============================================
   FOCUS STYLES (Accessibility)
   ============================================= */
:focus-visible {
  outline: 3px solid var(--clr-yellow);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}