body {
    font-family: Arial,Helvetica, sansserif;
        background-image: url('https://raw.githubusercontent.com/Tsakumakis/Beach-volleyball-tournament/refs/heads/main/assets/background.jpg');
    background-repeat: no-repeat;
    background-position: center;
    background-attachment: fixed;
    background-size: 100% 100%;
}
.header {
    padding:80px;
    text-align: center;
    color:rgb(0, 0, 0);
    
}

.en:hover, .el:hover {
    background-color: #7EB6D2 !important;
}
.header h1 {
    font-size: 40px;
    text-shadow: 0px 0px 10px rgba(255,255,255,0.8);
}
.navbar{
    overflow:hidden;
    background-color:#2C3E50;
}
.navbar a{
    float:left;
    display:block;
    color:white;
    text-align:center;
    padding:14px 16px;
    text-decoration:none;
}
.navbar a:right{
    float:right;
}
.navbar a:hover{
    background-color:#7EB6D2;
    color:black;
}
.navbar-btn{
    overflow:hidden;
    background-color:#2C3E50
}
.navbar-btn a{
    color:white;
    float:right;
    text-align:center;
    padding:14px 16px;
    text-decoration:none;
    display:block;
}
.navbar-btn:right{
    float:right;
}

*{
    box-sizing: border-box;
}
.row{
    display:flex;
    flex-wrap:wrap;
}
.side{
    flex:30%;
    background-color:#F4D03F;
    padding:10px;
}
.main{
    flex:70%;
    background-color:#F4D03F;
    padding: 20px;
}
.footer{
    padding:20px;
    width:100%;
    text-align:center;
    background-color:rgb(44, 62, 80, 0.8);
    color:white;
}


.main-content {
    flex: 70%; 
    padding: 40px 20px;
    background-color: #F4D03F;
}

.registration-container {
    display: flex;
    justify-content: center;
    align-items: stretch; 
    gap: 25px; 
    flex-wrap: wrap;
    max-width: 1000px;
    margin: 0 auto;
    
}

.category-card {
    background-color: #ffffff;
    border: 2px solid #eee;
    border-radius: 12px;
    padding: 25px;
    width: 280px;
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: all 0.3s ease;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

.category-card:hover {
    transform: translateY(-8px);
    border-color: #7EB6D2;
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.category-card h3 {
    color: #333;
    margin-top: 0;
    font-size: 1.4rem;
}

.experience-note {
    font-size: 0.95rem;
    color: #666;
    line-height: 1.5;
    margin: 15px 0 25px 0;
    font-style: italic;
    min-height: 60px; 
}

.reg-button {
    background-color: #333;
    color: white;
    padding: 12px 20px;
    text-decoration: none;
    border-radius: 6px;
    font-weight: bold;
    display: block;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.reg-button:hover {
    background-color: #7EB6D2;
    color: #fff;
}

.lang-btn {
    padding: 14px 16px;
    background: none;
    border: none;
    color: white;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.3s;
}

.lang-btn:hover {
    background-color: #7EB6D2;
}

@media screen and (max-width: 600px) {
    .registration-container {
        flex-direction: column;
        align-items: center;
    }
    .category-card {
        width: 90%;
    }
}