/* Universo Práctico — estilos base del dominio raíz */

:root {
  --color-bg: #faf8f3;
  --color-surface: #ffffff;
  --color-text: #1f2a24;
  --color-text-muted: #4a564e;
  --color-primary: #1d4d3f;
  --color-primary-dark: #123329;
  --color-accent: #b9793f;
  --color-border: #e2ddd0;
  --focus-ring: #1a73e8;
  --radius: 10px;
  --max-width: 1080px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #14201b;
    --color-surface: #1b2b24;
    --color-text: #eef1ee;
    --color-text-muted: #b7c2bb;
    --color-primary: #6fbf9a;
    --color-primary-dark: #8fd4b3;
    --color-accent: #e0a869;
    --color-border: #2c3a33;
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: "Segoe UI", Verdana, Arial, sans-serif;
  line-height: 1.6;
  font-size: 17px;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

h1, h2, h3 {
  color: var(--color-primary-dark);
  line-height: 1.25;
}

@media (prefers-color-scheme: dark) {
  h1, h2, h3 {
    color: var(--color-primary);
  }
}

h1 {
  font-size: clamp(1.9rem, 4vw, 2.6rem);
  margin: 0 0 1rem;
}

h2 {
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  margin-top: 0;
}

h3 {
  font-size: 1.2rem;
}

a {
  color: var(--color-primary);
}

@media (prefers-color-scheme: dark) {
  a {
    color: var(--color-primary-dark);
  }
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--focus-ring);
  outline-offset: 2px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--color-primary);
  color: #fff;
  padding: 10px 16px;
  z-index: 100;
  border-radius: 0 0 var(--radius) 0;
}

.skip-link:focus {
  left: 0;
}

/* Header */

.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 20;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  padding-bottom: 14px;
  gap: 16px;
  flex-wrap: wrap;
}

.logo {
  font-weight: 700;
  font-size: 1.25rem;
  text-decoration: none;
  color: var(--color-primary-dark);
}

@media (prefers-color-scheme: dark) {
  .logo {
    color: var(--color-primary);
  }
}

.main-nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
  margin: 0;
  padding: 0;
}

.main-nav a {
  text-decoration: none;
  color: var(--color-text);
  font-size: 0.97rem;
}

.main-nav a:hover,
.main-nav a[aria-current="page"] {
  color: var(--color-primary);
  text-decoration: underline;
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 8px 10px;
  cursor: pointer;
}

.nav-toggle-bar,
.nav-toggle-bar::before,
.nav-toggle-bar::after {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  position: relative;
}

.nav-toggle-bar::before,
.nav-toggle-bar::after {
  content: "";
  position: absolute;
  left: 0;
}

.nav-toggle-bar::before { top: -7px; }
.nav-toggle-bar::after { top: 7px; }

@media (max-width: 720px) {
  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .main-nav {
    flex-basis: 100%;
    display: none;
  }

  .main-nav.is-open {
    display: block;
  }

  .main-nav ul {
    flex-direction: column;
    gap: 10px;
    padding: 10px 0 4px;
  }
}

/* Hero */

.hero {
  padding: 56px 0 40px;
  background: linear-gradient(180deg, var(--color-surface), var(--color-bg));
}

.hero-lead {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  max-width: 62ch;
}

.btn {
  display: inline-block;
  background: var(--color-primary);
  color: #fff;
  text-decoration: none;
  padding: 12px 22px;
  border-radius: var(--radius);
  font-weight: 600;
  margin-top: 10px;
}

.btn:hover {
  background: var(--color-primary-dark);
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--color-primary);
  color: var(--color-primary);
  padding: 9px 18px;
  font-size: 0.95rem;
}

.btn-outline:hover {
  background: var(--color-primary);
  color: #fff;
}

@media (prefers-color-scheme: dark) {
  .btn {
    color: #0d1712;
  }
  .btn-outline {
    color: var(--color-primary);
    border-color: var(--color-primary);
  }
  .btn-outline:hover {
    color: #0d1712;
  }
}

/* Sections */

.section {
  padding: 48px 0;
  border-top: 1px solid var(--color-border);
}

/* Sites grid */

.site-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  margin-top: 28px;
}

.site-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.site-category {
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: 0.75rem;
  color: var(--color-accent);
  margin: 0;
  font-weight: 600;
}

.site-thumb {
  display: block;
  margin: -20px -20px 6px;
  border-bottom: 1px solid var(--color-border);
  border-radius: var(--radius) var(--radius) 0 0;
  overflow: hidden;
  aspect-ratio: 8 / 5;
  background: var(--color-bg);
}

.site-thumb img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  transition: transform 0.3s ease;
}

.site-thumb:hover img {
  transform: scale(1.03);
}

@media (prefers-reduced-motion: reduce) {
  .site-thumb img { transition: none; }
  .site-thumb:hover img { transform: none; }
}

.site-note {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  margin: 0;
}

.badge-new {
  display: inline-block;
  margin-left: 6px;
  padding: 1px 8px;
  border-radius: 999px;
  background: var(--color-primary);
  color: #fff;
  letter-spacing: 0.02em;
}

@media (prefers-color-scheme: dark) {
  .badge-new { color: #0d1712; }
}

.site-card .btn-outline {
  margin-top: auto;
  align-self: flex-start;
}

.site-card h3 {
  margin: 0;
}

.site-link {
  word-break: break-all;
  font-size: 0.9rem;
}

.quality-list {
  padding-left: 1.2em;
}

.quality-list li {
  margin-bottom: 8px;
}

.contact-more {
  margin-top: 4px;
}

.contact-email-block {
  margin: 18px 0;
}

.notice {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 14px 16px;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* Legal pages */

.legal h2 {
  margin-top: 2em;
}

/* Footer */

.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 32px 0;
  background: var(--color-surface);
  margin-top: 20px;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: flex-start;
}

.footer-inner nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  padding: 0;
  margin: 0;
}

.footer-inner a {
  text-decoration: none;
}

.footer-inner a:hover {
  text-decoration: underline;
}

.footer-copy,
.footer-contact {
  color: var(--color-text-muted);
  margin: 0;
  font-size: 0.9rem;
}

/* Evita que la cabecera fija tape el título al saltar a un ancla */
section[id] {
  scroll-margin-top: 80px;
}

/* Guías (artículos) */

.article {
  max-width: 760px;
  padding-top: 32px;
  padding-bottom: 48px;
}

.article h2 {
  margin-top: 2em;
}

.article .lead {
  font-size: 1.12rem;
  color: var(--color-text-muted);
}

.article li {
  margin-bottom: 6px;
}

.breadcrumb {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: 18px;
}

.article-meta {
  font-size: 0.92rem;
  color: var(--color-text-muted);
  margin-top: -6px;
}

.article-notice {
  margin: 18px 0;
}

.article-cta {
  margin-top: 32px;
  padding: 16px 18px;
  border-left: 4px solid var(--color-accent);
  background: var(--color-surface);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.article-cta p {
  margin: 0;
}

.article-related {
  margin-top: 36px;
  padding-top: 8px;
  border-top: 1px solid var(--color-border);
}

.guide-card h2.h3,
.guides h3 {
  font-size: 1.15rem;
  margin: 0;
}

.guide-card h2.h3 a,
.guides h3 a {
  text-decoration: none;
}

.guide-card h2.h3 a:hover,
.guides h3 a:hover {
  text-decoration: underline;
}