/* =========================================================
   países-nordicos.com — hoja de estilos principal
   Estética nórdica: minimalista, mucho blanco, azules fríos.
   Sin frameworks; CSS puro, mobile-first, responsive.
   ========================================================= */

:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f3f8fb;
  --color-bg-alt-2: #eaf2f7;
  --color-primary: #0b4f6c;
  --color-primary-dark: #083b52;
  --color-primary-light: #2c6e91;
  --color-accent: #3d9dc4;
  --color-accent-light: #d7ecf5;
  --color-text: #1c2b33;
  --color-muted: #5c7080;
  --color-border: #dbe6ec;
  --radius: 10px;
  --max-width: 1080px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

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

a:hover,
a:focus {
  text-decoration: underline;
}

h1, h2, h3, h4 {
  color: var(--color-primary-dark);
  line-height: 1.25;
  font-weight: 700;
}

h1 { font-size: clamp(1.9rem, 4vw, 2.75rem); }
h2 { font-size: clamp(1.4rem, 3vw, 1.9rem); margin-top: 2.5rem; }
h3 { font-size: 1.15rem; color: var(--color-primary); }

p { margin: 0 0 1rem; }

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--color-primary-dark);
  color: #fff;
  padding: 0.75rem 1.25rem;
  z-index: 1000;
  border-radius: 0 0 6px 0;
}
.skip-link:focus {
  left: 0;
}

/* ---------- Header / navegación ---------- */

.site-header {
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1.25rem;
  flex-wrap: wrap;
}

.logo {
  font-weight: 800;
  font-size: 1.2rem;
  color: var(--color-primary-dark);
  letter-spacing: -0.02em;
}
.logo span { color: var(--color-accent); }
.logo:hover { text-decoration: none; opacity: 0.85; }

.nav-toggle {
  display: none;
}

.nav-toggle-label {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 30px;
  height: 24px;
  cursor: pointer;
}
.nav-toggle-label span {
  display: block;
  height: 3px;
  border-radius: 2px;
  background: var(--color-primary-dark);
}

.site-nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.1rem;
  margin: 0;
  padding: 0;
}

.site-nav a {
  display: inline-block;
  padding: 0.4rem 0.2rem;
  color: var(--color-text);
  font-weight: 600;
  font-size: 0.95rem;
  border-bottom: 2px solid transparent;
}

.site-nav a:hover,
.site-nav a:focus {
  text-decoration: none;
  color: var(--color-primary);
  border-bottom-color: var(--color-accent);
}

.site-nav a[aria-current="page"] {
  color: var(--color-primary-dark);
  border-bottom-color: var(--color-primary-dark);
}

@media (max-width: 780px) {
  .nav-toggle-label {
    display: flex;
  }
  .site-nav {
    flex-basis: 100%;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.25s ease;
    width: 100%;
  }
  .site-nav ul {
    flex-direction: column;
    gap: 0;
    padding: 0.5rem 0 0.75rem;
    border-top: 1px solid var(--color-border);
    margin-top: 0.6rem;
  }
  .site-nav a {
    padding: 0.6rem 0.1rem;
    width: 100%;
  }
  .nav-toggle:checked ~ .site-nav {
    max-height: 640px;
  }
}

/* ---------- Hero ---------- */

.hero {
  background: linear-gradient(160deg, #f3f8fb, #d7ecf5);
  border-bottom: 1px solid var(--color-border);
}

.hero-inner {
  padding: 3rem 1.25rem 2.5rem;
  text-align: center;
}

.hero .flags {
  font-size: 2rem;
  letter-spacing: 0.35em;
  margin-bottom: 1rem;
}

.hero p.lead {
  max-width: 640px;
  margin: 0 auto 1.5rem;
  color: var(--color-muted);
  font-size: 1.08rem;
}

.page-hero {
  background: var(--color-bg-alt);
  border-bottom: 1px solid var(--color-border);
  padding: 2.25rem 0 1.75rem;
}
.page-hero p {
  color: var(--color-muted);
  max-width: 700px;
  margin: 0.4rem 0 0;
}

/* ---------- Botones ---------- */

.btn {
  display: inline-block;
  background: var(--color-primary);
  color: #fff;
  padding: 0.7rem 1.4rem;
  border-radius: var(--radius);
  font-weight: 600;
  margin: 0.25rem 0.4rem 0.25rem 0;
}
.btn:hover, .btn:focus {
  background: var(--color-primary-dark);
  text-decoration: none;
}
.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
}
.btn-outline:hover {
  background: var(--color-accent-light);
}

/* ---------- Secciones y tarjetas ---------- */

main {
  padding: 2rem 0 3rem;
}

.section {
  margin-bottom: 2.5rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
  margin: 1.25rem 0;
}

.card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.25rem;
  transition: box-shadow 0.15s ease, transform 0.15s ease;
}
.card:hover {
  box-shadow: 0 6px 18px rgba(11, 79, 108, 0.1);
  transform: translateY(-2px);
}
.card h3 {
  margin-top: 0;
}
.card p {
  color: var(--color-muted);
  font-size: 0.95rem;
  margin-bottom: 0.5rem;
}
.card a.card-link {
  font-weight: 700;
}

.country-block {
  margin-bottom: 2.25rem;
  padding-top: 0.5rem;
  border-top: 3px solid var(--color-accent-light);
}
.country-block h2 {
  margin-top: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.link-list {
  list-style: none;
  margin: 0.75rem 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 0.6rem;
}
.link-list li {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 0.7rem 0.9rem;
}
.link-list li strong {
  display: block;
  color: var(--color-primary-dark);
  font-size: 0.98rem;
}
.link-list li span {
  color: var(--color-muted);
  font-size: 0.88rem;
}

.subhead {
  font-weight: 700;
  color: var(--color-primary);
  margin: 1.5rem 0 0.25rem;
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.facts {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
}
.facts ul {
  margin: 0;
  padding-left: 1.2rem;
}
.facts li {
  margin-bottom: 0.6rem;
}

.note {
  background: #fff7e6;
  border: 1px solid #f0d9a6;
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  font-size: 0.95rem;
  color: #6b4e15;
  margin: 1rem 0;
}

.map-embed {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 0.5rem;
}
.map-embed iframe {
  width: 100%;
  height: 380px;
  border: 0;
  display: block;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
}
th, td {
  text-align: left;
  padding: 0.6rem 0.7rem;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.95rem;
}
th {
  color: var(--color-primary-dark);
  background: var(--color-bg-alt);
}

/* ---------- Footer ---------- */

.site-footer {
  background: var(--color-primary-dark);
  color: #cfe3ec;
  margin-top: 2rem;
}
.footer-inner {
  padding: 2rem 1.25rem;
  text-align: center;
}
.site-footer a {
  color: #fff;
  font-weight: 600;
}
.site-footer p {
  margin: 0.3rem 0;
  font-size: 0.92rem;
}

/* ---------- Utilidades ---------- */

.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.small { font-size: 0.85rem; color: var(--color-muted); }