:root {
  --prussian-blue: #00072d;
  --deep-navy: #001c55;
  --imperial-blue: #0a2472;
  --cornflower-ocean: #0e6ba8;
  --frosted-blue: #a6e1fa;
}

/* Reset básico */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* Estilo general */
body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  background: linear-gradient(
    to bottom,
    var(--frosted-blue),
    var(--cornflower-ocean)
  );
  color: var(--deep-navy);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */
.site-header {
  background: linear-gradient(135deg, var(--prussian-blue), var(--deep-navy));
  color: var(--frosted-blue);
  text-align: center;
  padding: 30px 20px;
  box-shadow: 0 3px 10px var(--imperial-blue);
}

.site-header h1 {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 2.4rem;
  letter-spacing: 1px;
  margin-bottom: 15px;
  color: var(--frosted-blue);
}

/* Navegación */
.main-nav {
  display: flex;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
}

.main-nav a {
  text-decoration: none;
  font-size: 1rem;
  font-weight: 600;
  color: var(--frosted-blue);
  background-color: var(--deep-navy);
  padding: 10px 16px;
  border-radius: 8px;
  transition: all 0.3s ease;
}

.main-nav a:hover {
  background-color: var(--frosted-blue);
  color: var(--prussian-blue);
}

/* Main */
.site-main {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 40px 20px;
}

.card {
  background-color: var(--frosted-blue);
  width: 100%;
  max-width: 800px;
  padding: 35px;
  border-radius: 16px;
  box-shadow: 0 6px 18px var(--deep-navy);
  text-align: center;
}

/* Título principal del contenido */
.card h2 {
  font-family: "Trebuchet MS", sans-serif;
  font-size: 2rem;
  color: var(--imperial-blue);
  margin-bottom: 20px;
  border-bottom: 3px solid var(--cornflower-ocean);
  display: inline-block;
  padding-bottom: 6px;
}

/* Párrafos */
.card p {
  font-family: Arial, Helvetica, sans-serif;
  font-size: 1.05rem;
  color: var(--deep-navy);
  margin-bottom: 18px;
  text-align: justify;
}

/* Botones */
.links {
  margin: 25px 0;
  display: flex;
  justify-content: center;
  gap: 15px;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  text-decoration: none;
  background-color: var(--cornflower-ocean);
  color: var(--frosted-blue);
  font-size: 1rem;
  font-weight: bold;
  padding: 12px 22px;
  border-radius: 10px;
  transition:
    background-color 0.3s ease,
    transform 0.2s ease;
}

.btn:hover {
  background-color: var(--imperial-blue);
  transform: translateY(-2px);
}

.btn.secondary {
  background-color: var(--deep-navy);
  color: var(--frosted-blue);
}

.btn.secondary:hover {
  background-color: var(--prussian-blue);
}

/* Enlace de mail */
.email-link {
  color: var(--cornflower-ocean);
  font-weight: bold;
  text-decoration: none;
  border-bottom: 1px dashed var(--cornflower-ocean);
}

.email-link:hover {
  color: var(--imperial-blue);
  border-bottom: 1px solid var(--imperial-blue);
}

/* Imagen */
.main-image {
  width: 100%;
  max-width: 400px;
  height: auto;
  display: block;
  margin: 25px auto 0;
  border-radius: 14px;
  border: 4px solid var(--cornflower-ocean);
  box-shadow: 0 4px 14px var(--deep-navy);
}

/* Footer */
.site-footer {
  background-color: var(--prussian-blue);
  color: var(--frosted-blue);
  text-align: center;
  padding: 18px 10px;
  font-size: 0.95rem;
  margin-top: auto;
}

.site-footer p {
  font-family: "Courier New", Courier, monospace;
  letter-spacing: 1px;
  text-align: center;
}

/* Página de paleta */
.palette-card {
  text-align: center;
}

.palette-description {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 25px;
}

/* SVG de paleta */
.palette-svg-container {
  margin: 30px auto 20px;
  max-width: 600px;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 8px 20px var(--deep-navy);
}

.palette-svg {
  width: 100%;
  height: auto;
  display: block;
}

/* Etiquetas de colores */
.palette-labels {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  margin-top: 15px;
  gap: 10px;
  text-align: center;
}

.palette-labels div {
  font-family: "Trebuchet MS", sans-serif;
  font-size: 0.9rem;
  color: var(--deep-navy);
}

.palette-labels span {
  font-family: "Courier New", monospace;
  font-size: 0.85rem;
  color: var(--cornflower-ocean);
}

/* Responsive */
@media (width <= 700px) {
  .card {
    padding: 25px 18px;
  }

  .main-nav {
    gap: 10px;
  }

  .palette-labels {
    grid-template-columns: 1fr;
    gap: 15px;
  }
}

/* Link activo */
.main-nav a.active {
  background-color: var(--frosted-blue);
  color: var(--prussian-blue);
  font-weight: bold;
  box-shadow: 0 2px 6px var(--deep-navy);
}