/* =========================
   VARIABLES GLOBALES
========================= */
:root {
  --color-bg: #E0F2FE;              /* 🔵 Fondo azul celeste claro */
  --color-panel: #FFFFFF;           /* Tarjetas blancas */
  --color-border: #CBD5E1;          /* Bordes suaves */
  --color-text: #0F172A;            /* Texto principal oscuro */
  --color-muted: #475569;           /* Texto secundario */

  --color-primary: #0EA5E9;         /* Azul moderno */
  --color-primary-strong: #0284C7;  /* Hover / activo */
}

/* =========================
   RESET
========================= */
* {
  box-sizing: border-box;
}

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

/* =========================
   CONTENEDOR
========================= */
.container {
  max-width: 960px;
  margin: auto;
  padding: 1.5rem;
}

/* =========================
   BREADCRUMB
========================= */
.breadcrumb {
  font-size: 0.85rem;
  color: var(--color-muted);
  margin-bottom: 1.5rem;
}

.breadcrumb a {
  color: var(--color-text);
  font-weight: 500;
  text-decoration: none;
  transition: color 0.2s ease;
}

.breadcrumb a:hover {
  color: var(--color-primary);
}

/* =========================
   HEADER
========================= */
.app-header h1 {
  margin: 0;
  font-size: 1.8rem;
  font-weight: 600;
  letter-spacing: -0.3px;
}

.subtitle {
  color: var(--color-muted);
  margin-top: 0.5rem;
}

/* =========================
   PANEL / TARJETAS
========================= */
.panel {
  background: var(--color-panel);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 1.75rem;
  box-shadow: 0 10px 25px rgba(2, 132, 199, 0.08); /* sombra azul suave */
}

.panel h2 {
  margin-top: 1.5rem;
  font-weight: 600;
}

.panel h2:first-child {
  margin-top: 0;
}

/* =========================
   LISTAS
========================= */
ol {
  margin-top: 0.5rem;
  padding-left: 1.2rem;
}

ol li {
  margin-bottom: 0.7rem;
  color: var(--color-muted);
}

/* =========================
   FOOTER
========================= */
.site-footer {
  border-top: 1px solid var(--color-border);
  margin-top: 3rem;
  padding: 2rem 1rem;
  text-align: center;
}

.footer-nav {
  color: var(--color-muted);
}

.footer-nav a {
  color: var(--color-text);
  font-weight: 500;
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer-nav a:hover {
  color: var(--color-primary);
}

.footer-copy {
  font-size: 0.8rem;
  color: var(--color-muted);
}

/* =========================
   LANGUAGE SWITCHER
========================= */
.language-switcher {
  text-align: right;
  font-size: 0.85rem;
  margin-bottom: 1rem;
}

.language-switcher a {
  color: var(--color-muted);
  text-decoration: none;
  margin-left: 0.4rem;
  transition: color 0.2s ease;
}

.language-switcher a:hover {
  color: var(--color-primary);
}