:root {
  --color-bg: #f7f7f8;
  --color-text: #0f172a;
  --color-accent: #2563eb;
  --color-ok: #10b981;
  --color-warning: #f59e0b;
  --color-card: #fff;
  --color-border: #e5e7eb;
  --max-width: 80ch;
  --font-main: system-ui, sans-serif;
  --transition: 0.2s;
}
@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #18181b;
    --color-text: #f7f7f8;
    --color-card: #23232a;
    --color-border: #444;
  }
}
body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-main);
  margin: 0;
  line-height: 1.7;
  padding: 0;
}
body > main {
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding: 0 1rem;
}
body > footer {
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding: 0 1rem;
}
a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition);
}
a:focus, button:focus, input:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}
.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--color-accent);
  color: #fff;
  padding: 8px;
  z-index: 100;
}
.skip-link:focus {
  left: 0;
}
.navbar {
  position: sticky;
  top: 0;
  background: var(--color-card);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 2rem;
  z-index: 10;
  width: 100%;
  box-sizing: border-box;
}
.navbar > * {
  display: flex;
  align-items: center;
  gap: 2rem;
}
.logo {
  height: 40px;
  margin-right: 1rem;
}
.navbar ul {
  list-style: none;
  display: flex;
  gap: 1rem;
  margin: 0;
  padding: 0;
  justify-content: center;
}
.navbar a {
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: 4px;
}
.navbar a[aria-current="page"] {
  background: var(--color-accent);
  color: #fff;
}
.hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  margin: 2rem 0;
}
.hero h1 {
  font-size: 2.2rem;
  margin-bottom: 1.5rem;
}
.hero-img-main {
  width: 100%;
  max-width: 800px;
  height: auto;
  margin: 1.5rem 0;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}
.hero-img {
  width: 120px;
  height: auto;
  margin-bottom: 1rem;
}
.avatar {
  max-width: 300px;
  width: 100%;
  height: auto;
  border-radius: 50%;
  display: block;
  margin: 2rem auto;
  object-fit: cover;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}
.claim {
  font-size: 1.2rem;
  color: var(--color-accent);
  margin-bottom: 1rem;
}
.cta {
  display: inline-block;
  background: var(--color-accent);
  color: #fff;
  padding: 0.75rem 1.5rem;
  border-radius: 6px;
  font-weight: bold;
  margin-top: 1rem;
  transition: background var(--transition);
}
.cta:hover, .cta:focus {
  background: var(--color-ok);
}
.posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
  margin: 2rem 0;
}
.post-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 1rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.03);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}
.post-card img {
  width: 100%;
  height: 80px;
  object-fit: contain;
  margin-bottom: 1rem;
}
.post-card h3 {
  margin: 0 0 0.5rem 0;
  font-size: 1.1rem;
}
.meta {
  font-size: 0.9rem;
  color: var(--color-accent);
  margin-top: 0.5rem;
}
.ver-todos {
  display: block;
  text-align: right;
  margin-top: 1rem;
  font-weight: 500;
}
.newsletter {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 2rem;
  margin: 2rem 0;
  text-align: center;
}
.newsletter-info {
  font-size: 0.9rem;
  color: var(--color-text);
  margin-top: 0.5rem;
}
.github-btn {
  background: var(--color-accent);
  color: #fff;
  padding: 0.75rem 1.5rem;
  border-radius: 6px;
  font-weight: bold;
  margin-top: 1rem;
  display: inline-block;
}
footer {
  margin-top: 3rem;
  padding: 2rem 0 1rem 0;
  border-top: 1px solid var(--color-border);
  text-align: center;
  font-size: 0.95rem;
  color: var(--color-text);
}
footer nav ul {
  display: flex;
  justify-content: center;
  gap: 2rem;
  list-style: none;
  padding: 0;
  margin: 0 0 1rem 0;
}
.email-ofuscado {
  unicode-bidi: bidi-override;
  direction: rtl;
}
.code-block {
  background: #23232a;
  color: #f7f7f8;
  border-radius: 6px;
  padding: 1rem;
  font-family: 'Fira Mono', 'Consolas', monospace;
  font-size: 0.95rem;
  position: relative;
  margin: 1rem 0;
  overflow-x: auto;
}
.code-block::before {
  content: attr(data-lang);
  position: absolute;
  top: 8px;
  right: 16px;
  background: var(--color-accent);
  color: #fff;
  font-size: 0.8rem;
  padding: 2px 8px;
  border-radius: 4px;
}
.copy-btn {
  position: absolute;
  top: 8px;
  left: 16px;
  background: var(--color-ok);
  color: #fff;
  border: none;
  border-radius: 4px;
  padding: 2px 8px;
  font-size: 0.8rem;
  cursor: pointer;
}
.alert {
  border-left: 6px solid var(--color-warning);
  background: #fffbe6;
  color: #7c4700;
  padding: 1rem;
  margin: 1rem 0;
  border-radius: 6px;
}
.alert-ok {
  border-left: 6px solid var(--color-ok);
  background: #e6fff7;
  color: #065f46;
}
.table-pasos {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
}
.table-pasos th, .table-pasos td {
  border: 1px solid var(--color-border);
  padding: 0.5rem 1rem;
  text-align: left;
}
.table-pasos th {
  background: var(--color-accent);
  color: #fff;
}

/* Botones de paginación y formularios */
.pagination button {
  background: var(--color-accent);
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 0.5rem 1.2rem;
  font-weight: 500;
  font-size: 1rem;
  margin: 0 0.3rem;
  cursor: pointer;
  transition: background var(--transition);
}
.pagination button:disabled {
  background: #b3c6f7;
  color: #fff;
  cursor: not-allowed;
}
.pagination button:hover:not(:disabled), .pagination button:focus:not(:disabled) {
  background: var(--color-ok);
}
.pagination {
  display: flex;
  align-items: center;
  gap: 1rem;
  list-style: none;
  padding: 0;
  margin: 1rem 0 2rem 0;
}
#filtro-tags label {
  font-weight: 500;
  margin-right: 0.5rem;
}
#tag-select {
  background: var(--color-card);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 0.5rem 1rem;
  font-size: 1rem;
  margin-left: 0.5rem;
}

/* Página de contacto */
.intro-contacto {
  font-size: 1.1rem;
  color: #64748b;
  margin-bottom: 2rem;
}

.contacto-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-top: 2rem;
}

@media (max-width: 768px) {
  .contacto-container {
    grid-template-columns: 1fr;
  }
  
  .hero-img-main {
    max-width: 100%;
    margin: 1rem 0;
  }
  
  .hero h1 {
    font-size: 1.8rem;
  }
  
  .posts-grid {
    grid-template-columns: 1fr;
  }
}

.formulario-section h2,
.info-contacto h2 {
  margin-top: 0;
  color: var(--color-text);
  font-size: 1.5rem;
}

.formulario-contacto {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group label {
  font-weight: 500;
  color: var(--color-text);
}

.form-group input,
.form-group textarea,
.form-group select {
  background: var(--color-card);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 0.75rem;
  font-size: 1rem;
  font-family: var(--font-main);
  transition: border-color var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--color-accent);
  outline: none;
}

.btn-enviar {
  background: var(--color-accent);
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--transition);
}

.btn-enviar:hover {
  background: var(--color-ok);
}

.form-info {
  font-size: 0.9rem;
  color: #64748b;
  margin-top: 0.5rem;
}

.info-contacto {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.contacto-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 1.5rem;
  transition: transform var(--transition), box-shadow var(--transition);
}

.contacto-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.contacto-card h3 {
  margin-top: 0;
  margin-bottom: 0.75rem;
  color: var(--color-text);
  font-size: 1.2rem;
}

.contacto-card p {
  margin: 0.5rem 0;
}

.contacto-card .descripcion {
  font-size: 0.9rem;
  color: #64748b;
}

.ideas-card {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: #fff;
  border: none;
}

.ideas-card h3,
.ideas-card .descripcion,
.ideas-card .nota {
  color: #fff;
}

.ideas-list {
  list-style: none;
  padding: 0;
  margin: 1rem 0;
}

.ideas-list li {
  padding-left: 1.5rem;
  margin-bottom: 0.5rem;
  position: relative;
}

.ideas-list li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: #fff;
  font-weight: bold;
}

.ideas-card .nota {
  font-size: 0.85rem;
  margin-top: 1rem;
  opacity: 0.9;
}