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

body {
    background-color: rgb(236, 236, 236);
    color: rgb(0, 0, 0);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

nav {
    display: flex;
    justify-content: center;
    gap: 25px;
    flex-wrap: wrap;
}

nav a {
    color: rgb(255, 255, 255);
    text-decoration: none;
    font-size: 1.1rem;
    font-weight: 500;
    padding: 5px 10px;
    transition: opacity 0.2s, border-bottom 0.2s;
}

nav a:hover {
    opacity: 0.8;
}

nav a.active {
    border-bottom: 2px solid rgb(255, 255, 255);
    opacity: 1;
}

main {
    max-width: 800px;
    margin: -20px auto 40px auto;
    padding: 0 15px;
    flex: 1;
}

.card {
    background: rgb(255, 255, 255);
    border-radius: 16px;
    padding: 35px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

header {
    background: linear-gradient(135deg, rgb(0, 255, 0), rgb(0, 26, 255));
    color: rgb(0, 0, 0);
    text-align: center;
    padding: 40px 20px;
}

header h1 {
    font-size: 50px;
    margin-bottom: 25px;
    font-weight: 600;
    letter-spacing: 0.5px;
}

h2 {
    font-size: 1.8rem;
    color: rgb(34, 34, 34);
    border-bottom: 2px solid rgb(255, 255, 255);
    padding-bottom: 10px;
}

h3 {
    font-size: 1.4rem;
    color: rgb(34, 34, 34);
    margin-top: 20px;
    margin-bottom: 10px;
}

h4 {
    font-size: 1.1rem;
    color: rgb(34, 34, 34);
    margin-top: 20px;
    margin-bottom: 10px;
}

h5 {
    font-size: 1.8rem;
    color: rgb(34, 34, 34);
    border-bottom: 2px solid rgb(255, 255, 255);
    padding-bottom: 10px;
}

h6 {
    font-size: 1.8rem;
    color: rgb(34, 34, 34);
    border-bottom: 2px solid rgb(255, 255, 255);
    padding-bottom: 10px;
}

.skill-badge {
    display: inline-block;
    background-color: rgb(255, 225, 225);
    padding: 5px 12px; 
    border-radius: 20px;
    margin: 4px;
    font-size: 0.95rem;
}

iframe {
        width: 100%; 
        height: 800px;
}

video {
       width: 100%
}

p {
    margin-bottom: 20px;
    font-size: 1.05rem;
    color: rgb(0, 0, 0);
    text-align: justify;
}

.profile-img {
    display: block;
    width: 90%;
    max-width: 450px;
    height: auto;
    margin: 25px auto 0 auto;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.SRSN {
    display: block;
    width: 90%;
    max-width: 450px;
    height: auto;
    margin: 25px auto;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.galeria {
    display: grid;
    grid-template-columns: repeat(3, 1fr);  /* 3 stĺpce */
    gap: 10px;
    margin-top: 80px;
}

.galeria img {
    width: 100%;
    height: 400px;
    object-fit: cover;      /* fotka vyplní priestor bez deformácie */
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

@media (max-width: 480px) {
    header h1 {
        font-size: 2rem;
    }
    nav {
        gap: 15px;
    }
    .card {
        padding: 20px;
    }
    .galeria {
    grid-template-columns: 1fr;
    margin-top: 30px;
    }
}

footer {
    background-color: rgb(0, 26, 255);
    color: rgb(255, 255, 255);
    text-align: center;
    padding: 25px 20px;
    font-size: 1rem;
    margin-top: 40px;
}

footer p {
    margin-bottom: 8px;
    color: rgb(255, 255, 255);
    text-align: center;
}

footer a {
    color: rgb(255, 255, 255);
    text-decoration: none;
    font-weight: 500;
}

footer a:hover {
    text-decoration: underline;
}