nav {  /*horny navbar mama stranka*/
  background: linear-gradient(to bottom,#414247,#2e3236 );
  color: white;
  padding: 5px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 99;
}
header { /*cast kde je nadpis v strede*/
  background-image:url("uctovnictvo\ cierne.jpg");
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  color: rgba(255, 255, 255, 1);
  text-align: center;
  padding: 60px 20px;
}

body { /*ta cast kde su obdlzniky*/
  margin: 0;
  font-family: Arial, sans-serif;
  background:whitesmoke;
  color: black;
  /*background: linear-gradient(to bottom, red, yellow, green, blue);*/
}
nav ul {
  list-style: none;
  display: flex;
  gap: 20px;
  margin: 0;
}
section {
  text-align:center
}

nav a {
  color: white;
  text-decoration: none;
}



section {
  padding: 40px 20px;
  max-width: 1000px;
  margin: auto;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
}

.ikony  {
  background: white;
  padding: 20px;
  border-radius: 20px;
  text-align: center;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

footer {
  background: #313236;
  color: white;
  text-align: center;
  padding: 15px;
}

details.ikony {
  background: white;
  cursor: pointer;
  padding: 20px;
  border-radius: 20px;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
  transition: transform 1s ease, background 1s ease, box-shadow 0.3s ease;
}

summary {
  cursor: pointer;
  font-weight: bold;
  list-style: none;
}

summary::-webkit-details-marker {
  display: none;
}

details p {
  margin-top: 15px;
  color: #555;
}

.back-to-top {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: #454547;
  color: white;
  padding: 12px 16px;
  border-radius: 50px;
  text-decoration: none;
  font-size: 14px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.3);
}

.back-to-top:hover {
  background: #163172;
}



/* zmodrie obdlznik ked sa prejde mysou po nom */
details.ikony:hover {
  transform: scale(1.05); /* jemne zväčší */
  background: #e3f0ff;     /* svetlomodrá farba */
  box-shadow: 0 6px 15px rgba(0,0,0,0.2); /* silnejší tieň */
}

.ikony{
  position:relative;
}

@media (max-width:768px){ /*na zariadeniach ktore su max 768 px*/

.ikony summary::after{
  content:"👇";
  right:5px;
  }
}
.color {
  text-decoration: none;
  color: black;
}
.color:hover{
  text-decoration: underline;
  color: red;
}
.osoba{
  width: 350px;
    float: left;
    margin-right: 10px;
    border-radius: 10px;
}

@media (max-width: 768px) {
  .osoba {
    width: 100%;   /* aby sa obrázok prispôsobil */
    height: auto;
  }
}