* {
    background-color: rgb(235, 235, 235);
    margin: 0;
    font-family: Impact, Haettenschweiler, 'Arial Narrow Bold', sans-serif;
}

header {
    width: 100%;
    height: auto;
    background-color: rgb(105, 195, 245);
}

.intro {
    width: 100%;
    background-color: transparent;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1%;
}

    .intro img {
    width: 200px;
    position: fixed;
    z-index: 1;
    top: 95%;
    left: 89%;
    background-color: transparent;
    }

.site {
    margin: auto;
    display: flex;
    align-items: center;
    gap: 10px;
    background-color: transparent;
}

.zde {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    background-color: transparent;
}

    .zde-container {
        background-color: transparent;
        display: flex;
        justify-content: space-between;
        text-align: center;
        margin-left: 100px;
    }

        .zde-container p {
            background-color: transparent;
        }

    .zde a,
    .zde p {
        color: #273d90;
        background-color: transparent;
        margin: 0;
        padding: 0;
        font-size: 1.3em;
        margin-right: 10px;
    }

.pulka {
    width: 90%;
    text-align: center;
    margin: 0.5% auto;
    border: rgb(235, 235, 235) solid 2px;
}

.menu {
    height: auto;
    width: 100%;
    background-color: transparent;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1%;
}

.favi {
    width: 100%;
    height: auto;
    background-color: transparent;
}

    .favi img {
        width: 300px;
        padding: 1%;
        margin-left: 20%;
        height: auto;
        background-color: rgb(235, 235, 235);
        border: #273d90 solid;
    }    

.vyber {
    width: 90%;
    height: auto;
    background-color: transparent;
    display: flex;
    justify-content: space-between;
    margin: 1%;
    margin-right: 10%;
}

    .vyber a {
        color: rgb(235, 235, 235);
        font-size: 1.8em;
    }

    .vyber a:hover {
        color: #273d90;
        text-decoration: none;
    }

    .vyber a:active {
        color: #000000;
    }

.siroky {
    position: relative;
    width: 100%;
    height: auto;
}

    .siroky h1 {
        color: rgb(235, 235, 235);
        padding: 2%;
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        text-align: center;
        background: transparent;
        font-size: 4em;
    }

    .siroky img {
        width: 100%;
        height: auto;
        display: block;
    }

.kurz {
    width: 60%;
    height: auto;
    background-color: transparent;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    margin: 3% auto;
    text-align: left;
}

.text {
    background-color: transparent;
    height: auto;
    text-align: center;
    margin: 3%;
}

    .text h4 {
        color: rgb(105, 195, 245);
        background-color: transparent;
        font-size: 1.8em;
    }

    .text ul {
        background-color: transparent;
        list-style-type: "➤  ";
    }

    .text ul li {
        color: #273d90;
        background-color: transparent;
    }

    .text ul li p {
        background-color: transparent;
        font-size: 1.5em;
        text-align: left;
    }

    .text ul li p a {
        color: rgb(105, 195, 245);
        background-color: transparent;
    }

    .text img {
        width: 500px;
        height: auto;
        border-radius: 5%;
        text-align: left;
        background-color: transparent;
    }

.foto {
    background-color: transparent;
}

    .foto img {
        background-color: transparent;
    }

    .foto:hover  {
        width: 100%;
        height: auto;
        border-radius: 10%;
        transform: scale(1.1);
        object-fit: cover;
    }

.cara {
    width: 90%;
    text-align: center;
    margin: 3% auto;
    border: rgb(105, 195, 245) solid 2px;
}

#month-year {
    background-color: transparent;
    font-size: 2em;
}

#calendar-container {
  width: 60%;
  margin: 3% auto;
  color: #273d90;
  background-color: transparent;
}

#calendar-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #273d90;
  font-weight: bold;
  font-size: 1.5em;
  margin-bottom: 10px;
  background-color: transparent;
}

.nav-button {
  background: none;
  border: none;
  color: rgb(105, 195, 245);
  font-size: 2.5em;
  cursor: pointer;
  transform: rotate(180deg);
  background-color: transparent;
}

#next-month {
  transform: none;
  background-color: transparent;
}

#calendar {
  width: 100%;
  border-collapse: collapse;
  border: 5px solid #273d90;
  background-color: transparent;
}

#calendar td, #calendar th {
  width: 14.28%;
  height: 100px;
  text-align: center;
  vertical-align: top;
  border: 1px solid #273d90;
  cursor: pointer;
  position: relative;
}

#calendar th {
  background-color: rgb(105, 195, 245);
  color: #273d90;
}

.today {
  border: 3px solid rgb(255, 0, 55) !important;
}

.empty {
  background-color: rgb(235, 235, 235) !important;
  cursor: default;
}

.course-1 {
  background-color: #ffb584;
  color: rgb(235, 235, 235);
}

.course-2 {
  background-color: #ff9148;
  color: rgb(235, 235, 235);
}

.course-3 {
  background-color: #ff7417;
  color: rgb(235, 235, 235);
}

.popup {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.5);
  z-index: 1000;
  display: flex;
  justify-content: center;
  align-items: center;
}

.popup-content {
  background-color: rgb(235, 235, 235);
  padding: 20px;
  max-width: 500px;
  border-radius: 10px;
  color: #273d90;
  box-shadow: 0 0 10px #000;
}

.popup h3, p {
  margin-top: 0;
  background-color: transparent;
}

.close {
  position: absolute;
  top: 20px;
  right: 30px;
  font-size: 1.5em;
  cursor: pointer;
  background-color: transparent;
}

.hidden {
  display: none;
}

.info-container {
    background-color: transparent;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    margin: 3% auto;
    text-align: left;
}

.info {
    background-color: transparent;
    height: auto;
    text-align: center;
    margin: 3%;
}

.info p {
    background-color: transparent;
    text-align: center;
    color: #273d90;
    font-size: 1.5em;
}

.info h2 {
    background-color: transparent;
    text-align: center;
    color: rgb(105, 195, 245);
    font-size: 1.8em;
}

.mapa {
    background-color: transparent;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    margin: 3% auto;
    text-align: left;
}

    .mapa iframe {
        border-color: rgb(105, 195, 245);
        border-radius: 5%;
        margin: 3%;
    }

.mapa-text {
    background-color: transparent;
}

    .mapa-text h2 {
        background-color: transparent;
        color: rgb(105, 195, 245);
        font-size: 2em;
        margin: 3%;
    }

    .mapa-text p {
        background-color: transparent;
        color: #273d90;
        font-size: 1.5em;
        margin: 3%;
    }

.copy p {
    background-color: rgb(105, 195, 245);
    color: rgb(235, 235, 235);
    margin: 0;
    margin-top: 2%;
    padding: 1%;
    text-align: center;
}

.kurz-detail {
    width: 80%;
    height: auto;
    background-color: transparent;
    margin: auto;
    margin-top: 3%;
    display: flex;
    justify-content: space-between;
    gap: 5%;
}

.lekce-container {
    width: 80%;
    margin: 3% auto;
    background-color: transparent;
}

.lekce-container h2 {
    color: rgb(105, 195, 245);
    background-color: transparent;
    font-size: 2em;
    text-align: center;
    margin-bottom: 3%;
    margin: 0 auto;
}

.lekce {
    background-color: transparent;
    margin: 2% 0;
    padding: 2%;
    border-left: 4px solid rgb(105, 195, 245);
}

.lekce h3 {
    color: #273d90;
    background-color: transparent;
    font-size: 1.5em;
    margin-bottom: 1%;
}

.lekce p {
    color: #273d90;
    background-color: transparent;
    font-size: 1.3em;
    line-height: 1.4;
}

.galerie-sekce {
    width: 80%;
    margin: 3% auto;
    background-color: transparent;
    text-align: center;
}

.galerie-sekce h2 {
    color: #273d90;
    background-color: transparent;
    font-size: 2em;
    margin-bottom: 2%;
}

.obrazky-container {
    background-color: transparent;
    display: flex;
    justify-content: space-between;
    gap: 2%;
    flex-wrap: wrap;
}

.obrazky-container .foto {
    flex: 1;
    max-width: 32%;
}

.obrazky-container .foto img {
    width: 100%;
    height: 300px;
    object-fit: cover;
}

@media screen and (max-width: 768px) {


    .intro {
        display: contents;
    }

    .zde-container {
        margin-left: 0 !important;
        margin: 0.5%;
        flex-direction: column;
        gap: 10px;
    }
    
    .zde {
        justify-content: center;
        text-align: center;
    }
    
    .zde a,
    .zde p {
        font-size: 1.1em;
        margin-right: 0;
    }
    
    /* Fix header layout */
    .intro {
        flex-direction: column;
        gap: 15px;
        padding: 2%;
    }
    
    .site {
        order: 1;
    }
    
    .zde {
        order: 2;
    }
    
    /* Adjust favicon image */
    .favi img {
        width: 250px;
        margin-left: 5%;
    }
    
    /* Fix navigation menu */
    .vyber {
        width: 95%;
        margin-right: 2.5%;
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
    
    .vyber a {
        font-size: 1.5em;
    }
    
    /* Adjust main heading */
    .siroky h1 {
        font-size: 1.5em;
        padding: 5%;
    }
    
    
    
    .kurz {
        flex-direction: column;
    }
    
    .text img {
        width: 100%;
        max-width: 200px;
    }
    
    /* Calendar adjustments */
    #calendar-container {
        width: 95%;
    }
    
    #calendar td, #calendar th {
        height: 60px;
        font-size: 0.9em;
    }
    
    .nav-button {
        font-size: 2em;
    }
    
    /* Gallery adjustments */
    .obrazky-container .foto {
        max-width: 48%;
    }
    
    .obrazky-container .foto img {
        height: 200px;
    }
    
    /* Course lessons */
    .lekce-container {
        width: 95%;
    }
    
    /* Map section */
    .mapa {
        flex-direction: column;
    }
    
    .mapa iframe {
        width: 100%;
        height: 300px;
    }
    
    /* Info containers */
    .info-container {
        flex-direction: column;
    }
    
    /* Popup adjustments */
    .popup-content {
        margin: 5%;
        max-width: 90%;
    }
}

/* Very small devices (up to 480px) */
@media screen and (max-width: 480px) {
    
    .text h4, .galerie-sekce h2  {
        color: rgb(105, 195, 245);
        background-color: transparent;
        font-size: 1.8em;
    }

    .text ul li p {
        background-color: transparent;
        font-size: 1.5em;
        text-align: left;
    }

    .siroky h1 {
        font-size: 1.3em;
        padding: 2%;
        text-decoration: none;
    }

    .favi img {
        width: 200px;
    }
    
    .vyber a {
        font-size: 1.3em;
    }
    
    #calendar td, #calendar th {
        height: 50px;
        font-size: 0.8em;
    }
    
    .obrazky-container .foto {
        max-width: 100%;
    }
    
    .obrazky-container .foto img {
        height: 250px;
    }

    .copy p {
        padding: 3%;
    }

    .intro img {
        width: 100px;
        position: fixed;
        z-index: 1;
        top: 95%;
        left: 73%;
        background-color: transparent;
    }

    .site a {
        font-size: 0.8em;
    }

    .zde-container p {
        font-size: 0.8em;
    }

    .mapa iframe {
        border-color: rgb(105, 195, 245);
        border-radius: 5%;
        margin: 3%;
        max-width: 200px;
    }

    .mapa-text {
        background-color: transparent;
    }

    #month-year {
    background-color: transparent;
    font-size: 1.2em;
}
}