* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Segoe UI", Arial, sans-serif;
}

body {
  
  background: linear-gradient(135deg, #d8f3f3, #add6ff);  color: #2c3e50;
  line-height: 1.6;
  padding: 20px;
}

/* ============================= */
/*            TÍTULOS            */
/* ============================= */

h1 {
  text-align: center;
  font-size: 40px;
  color: #1b3a57;
  margin-bottom: 15px;
  letter-spacing: 1px;

}

h2 {
  color: #1b3a57;
  margin-top: 30px;
  margin-bottom: 10px;
  border-left: 6px solid #2e8b8b;
  padding-left: 10px;
}

h3, h4, h5, h6 {
  color: #244b66;
  margin-top: 20px;
  margin-bottom: 8px;
}

/* ============================= */
/*          LÍNEAS HR            */
/* ============================= */

hr {
  border: none;
  height: 2px;
  background: linear-gradient(to right, #1b3a57, #2e8b8b);
  margin: 25px 0;
  border-bottom: 4px solid #1ca7a6;
}

/* ============================= */
/*            IMÁGENES           */
/* ============================= */

img {
  display: block;
  margin: 20px auto;
  border-radius: 10px;
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.15);
  transition: transform 0.3s ease;
}

img:hover {
  transform: scale(1.03);
}

/* ============================= */
/*            PÁRRAFOS           */
/* ============================= */

p {
  margin-bottom: 15px;
  font-size: 17px;
}

/* ============================= */
/*            LISTAS             */
/* ============================= */

ol {
  margin-left: 30px;
  margin-bottom: 20px;
}

ul {
  margin-left: 20px;
  margin-top: 5px;
}

li {
  margin-bottom: 6px;
}

/* ============================= */
/*            TABLA              */
/* ============================= */

table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  background-color: white;
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.1);
  border-radius: 8px;
  overflow: hidden;
}

th {
  background-color: #1b3a57;
  color: white;
  padding: 12px;
  text-align: center;
}

td {
  padding: 10px;
  text-align: center;
  border-bottom: 1px solid #ddd;
}

tr:nth-child(even) {
  background-color: #f2f2f2;
}

tr:hover {
  background-color: #e6f2f2;
}

/* ============================= */
/*            ENLACES            */
/* ============================= */

a {
  color: #2e8b8b;
  text-decoration: none;
  font-weight: 600;
  transition: color 0.3s ease;
}

a:hover {
  color: #1b3a57;
  text-decoration: underline;
}

/* ============================= */
/*        BOTÓN IMAGEN VÍDEO     */
/* ============================= */

a img {
  border: 3px solid #1b3a57;
  border-radius: 12px;
}

a img:hover {
  border-color: #2e8b8b;
  transform: scale(1.05);
}

/* ============================= */
/*     BOTÓN VOLVER ARRIBA       */
/* ============================= */

a[href="#inicio"] {
  display: inline-block;
  margin-top: 15px;
  padding: 8px 15px;
  background-color: #1b3a57;
  color: white;
  border-radius: 20px;
  transition: background-color 0.3s ease;
}

a[href="#inicio"]:hover {
  background-color: #2e8b8b;
}