body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f5f5f5;
    margin: 0;
}
/* Navbar */
.navbar {
    background-color: #3b3b59; /* tamno ljubičasta/siva */
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: #fff;
}
.navbar a {
    color: #fff;
    margin-left: 1rem;
    text-decoration: none;
    font-weight: 500;
}
.logo img {
    height: 50px;
}
/* Hero section */
.hero {
    text-align: center;
    padding: 3rem 1rem;
    background: linear-gradient(135deg, #6a5acd 0%, #b19cd9 100%);
    color: #fff;
    border-radius: 12px;
    margin: 2rem auto;
    max-width: 1100px;
}
.hero h1 {
    font-size: 2.2rem;
    margin-bottom: 1rem;
}
.hero p {
    font-size: 1.1rem;
    line-height: 1.5rem;
}
/* Kartice */
.cards-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}
.card {
    background-color: #fff;
    border-radius: 12px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
    padding: 1.5rem;
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
}
.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.2);
}
.card img {
    max-width: 80px;
    margin-bottom: 1rem;
}
.card h3 {
    margin-bottom: 0.5rem;
    color: #6a5acd;
}
.card p {
    font-size: 0.95rem;
    color: #555;
}
.section-title {
    text-align: center;
    margin-bottom: 2rem;
    font-size: 1.8rem;
    color: #333;
}