*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
  color: #0f172a;
  background-color: #f5f5f7;
}

a {
  text-decoration: none;
  color: inherit;
}

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

.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header */

.site-header {
  background: #ffffff;
  border-bottom: 1px solid #e5e7eb;
  position: sticky;
  top: 0;
  z-index: 10;
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 0;
  gap: 1rem;
}

.logo img {
  height: 100px;
}
/* Fondo del logo adaptativo según modo claro/oscuro */
.logo-img {
  background-color: #ffffff;    /* fondo en modo claro */
  padding: 100px;
  border-radius: 100px;
  transition: background-color 0.3s ease;
}

@media (prefers-color-scheme: dark) {
  .logo-img {
    background-color: #000000;  /* fondo en modo oscuro */
  }
}

.main-nav {
  display: flex;
  gap: 1.25rem;
  font-size: 0.95rem;
}

.main-nav a {
  padding: 0.35rem 0;
  border-bottom: 2px solid transparent;
}

.main-nav a:hover {
  border-bottom-color: #2563eb;
}

.main-nav .active {
  border-bottom-color: #2563eb;
  font-weight: 600;
}

/* Secciones genéricas */

main {
  min-height: 60vh;
}

.section {
  padding: 3rem 0;
}

.section-alt {
  background: #e5e7eb;
}

.section h2 {
  font-size: 1.8rem;
  margin-bottom: 0.75rem;
}

.section-intro {
  max-width: 620px;
  margin-bottom: 1.5rem;
  color: #4b5563;
}

/* Hero */

.hero {
  background: radial-gradient(circle at top left, #1d4ed8, #020617);
  color: #f9fafb;
  padding: 3.5rem 0 3rem;
}

.hero-content {
  display: flex;
  align-items: center;
}

.hero-text h1 {
  font-size: clamp(2rem, 3vw, 2.6rem);
  margin-bottom: 1rem;
}

.hero-text p {
  max-width: 640px;
  margin-bottom: 1.5rem;
  color: #e5e7eb;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.hero-bullets {
  list-style: disc;
  margin-left: 1.1rem;
  font-size: 0.95rem;
  color: #e5e7eb;
}

/* Botones */

.btn-primary,
.btn-secondary {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
}

.btn-primary {
  background: #facc15;
  color: #1f2937;
}

.btn-primary:hover {
  filter: brightness(0.95);
}

.btn-secondary {
  border: 1px solid #e5e7eb;
}

.btn-secondary:hover {
  background: rgba(15, 23, 42, 0.2);
}

/* Servicios */

.services {
  background: #f5f5f7;
}

.service-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  margin-top: 1.5rem;
}

.service-card {
  background: #ffffff;
  padding: 1.5rem;
  border-radius: 1rem;
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.06);
}

.service-card h3 {
  margin-bottom: 0.5rem;
  font-size: 1.1rem;
}

.service-card p {
  color: #4b5563;
  font-size: 0.95rem;
}

/* Sección "por qué" */

.why-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: minmax(0, 2fr) minmax(0, 3fr);
  align-items: flex-start;
}

.why-list {
  list-style: none;
  display: grid;
  gap: 0.75rem;
}

.why-list li {
  font-size: 0.95rem;
  color: #374151;
}

/* Páginas internas */

.page-header {
  padding: 2.5rem 0 1rem;
  border-bottom: 1px solid #e5e7eb;
  margin-bottom: 1.5rem;
}

.page-header h1 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.page-header p {
  color: #4b5563;
}

/* Listas de contenido */

.text-block {
  max-width: 720px;
  font-size: 0.97rem;
  color: #374151;
}

.text-block p + p {
  margin-top: 0.75rem;
}

.text-block ul {
  margin-top: 0.5rem;
  margin-left: 1.2rem;
}

.text-block li {
  margin-bottom: 0.35rem;
}

/* Portafolio */

.portfolio-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.portfolio-card {
  background: #ffffff;
  padding: 1.5rem;
  border-radius: 1rem;
  box-shadow: 0 10px 25px rgba(15, 23, 42, 0.05);
}

.portfolio-card h3 {
  margin-bottom: 0.5rem;
}

/* Contacto */

.contact-layout {
  display: grid;
  gap: 2rem;
  grid-template-columns: minmax(0, 3fr) minmax(0, 2fr);
}

.contact-form {
  background: #ffffff;
  padding: 1.5rem;
  border-radius: 1rem;
  box-shadow: 0 10px 25px rgba(15, 23, 42, 0.05);
}

.form-row {
  margin-bottom: 1rem;
}

.form-row label {
  display: block;
  font-size: 0.9rem;
  margin-bottom: 0.25rem;
}

.form-row input,
.form-row textarea {
  width: 100%;
  padding: 0.5rem 0.65rem;
  border-radius: 0.5rem;
  border: 1px solid #d1d5db;
  font: inherit;
}

.form-row textarea {
  min-height: 120px;
  resize: vertical;
}

.form-row input:focus,
.form-row textarea:focus {
  outline: 2px solid #2563eb;
  outline-offset: 1px;
}

.contact-info p {
  font-size: 0.95rem;
  color: #374151;
}

.contact-info p + p {
  margin-top: 0.5rem;
}

/* Footer */

.site-footer {
  background: #020617;
  color: #e5e7eb;
  margin-top: 3rem;
  padding-top: 2rem;
}

.footer-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: minmax(0, 2fr) minmax(0, 2fr);
  font-size: 0.9rem;
}

.footer-brand {
  font-weight: 600;
  margin-bottom: 0.3rem;
}

.footer-bottom {
  text-align: center;
  font-size: 0.8rem;
  padding: 0.75rem 0 1.2rem;
  border-top: 1px solid #111827;
  margin-top: 1.5rem;
}

/* Responsive */

@media (max-width: 768px) {
  .header-content {
    flex-direction: column;
    align-items: flex-start;
  }

  .main-nav {
    flex-wrap: wrap;
    justify-content: flex-start;
  }

  .hero-content {
    text-align: left;
  }

  .why-grid,
  .contact-layout,
  .footer-grid {
    grid-template-columns: 1fr;
  }
}