html, body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    height: 100%;
    background: #f9f9f9;
    color: #222;
}
header, footer {
    text-align: center;
    padding: 0;
}
header {
    font-size: 18px;
    font-weight: bold;
    text-align: center;
    background: #0d1b2a;
    padding: 0;
}
.header a {
    color: #e0e6ed;
    margin-left: 18px;
    text-decoration: none;
    font-weight: bold;
}
.header-flex {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.logo {
    height: 100px;
}
.wrapper {
    min-height: 100%;
    display: flex;
    flex-direction: column;
}
main {
    flex: 1;
}
.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0;
    text-align: center;
}
.tools {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 30px;
    margin-top: 40px;
}
.tool {
    width: 260px;
    background: white;
    border-radius: 10px;
    padding: 20px;
    text-decoration: none;
    color: black;
    box-shadow: 0 2px 6px rgba(0,0,0,0.1);
    transition: 0.2s;
}
.tool:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 10px rgba(0,0,0,0.15);
}
.tool img {
    width: 100%;
    border-radius: 6px;
    margin-bottom: 15px;
}
footer {
    text-align: center;
    padding: 20px;
    margin-top: 20px;
    font-size: 14px;
    color: #666;
    background: #0d1b2a;
}
footer a {
    color: #e0e6ed;
    text-decoration: none;
    font-weight: bold;
}
footer .social {
    margin-top: 10px;
}
footer .fb-icon {
    width: 26px;
    height: 26px;
    fill: #e0e6ed; /* ten sam kolor co linki */
    transition: 0.2s;
}
footer .fb-icon:hover {
    fill: #80b7ff; /* delikatny jaśniejszy akcent */
    transform: scale(1.12);
}