body {
    font-family: 'Arial', sans-serif;
    background: linear-gradient(#34495E, #1a2836) fixed;
    margin: 0;
    padding-top: 3.4vh;
}

* {
    box-sizing: border-box;
}

.container {
    max-width: 1000px;
    margin: auto;
    background: #ECF0F1;
    padding: 4vh;
    border-radius: 10px;
    box-shadow: 0 0 20px #000;
    animation: containerEntrance 1s ease-out;
}

@keyframes containerEntrance {
    from {
        opacity: 0;
        transform: translateY(2rem);
    }
    to {
        opacity: 1;
        transform: none;
    }
}

.header {
    text-align: left;
    margin-bottom: 2.5rem;
    animation: headerFade 1s ease-in;
    position: relative;
}

@keyframes headerFade {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: none;
    }
}

.header h1 {
    font-size: 2rem;
    color: #34495E;
    margin: 1.5rem 0 0.5rem 0;
    text-align: center;
}

.icons-row {
    display: grid;
    gap: 2rem;
    grid-template-columns: repeat(3, 1fr);
    text-align: center;
}

.icon-box {
    background-color: #fff;
    border: 2px solid #bdc3c7;
    border-radius: 0.8rem;
    padding: 1.5rem 1rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    will-change: transform;
}

.icon-box:hover {
    transform: scale(1.03);
    box-shadow: 0 0 0 3px rgba(52, 73, 94, 0.2);
}

.icon-box img {
    width: 50px;
    height: auto;
    margin-bottom: 0.5rem;
}

.icon-box h3 {
    color: #34495E;
    margin: 0.5rem 0;
    font-size: 1.1rem;
    will-change: transform;
}

.icon-box p {
    margin: 0;
}

.icon-box a {
    color: #34495E;
    text-decoration: none;
    font-weight: bold;
    transition: color 0.3s ease;
}

.icon-box a:hover {
    color: #2c3e50;
}

.nav-button {
    max-width: 50%;
    display: inline-block;
    border: 2px solid #bdc3c7;
    color: #34495E;
    font-weight: bold;
    border-radius: 10px;
    text-align: center;
    padding: 2vh 3vw;
    text-decoration: none;
    will-change: transform;
    background-color: white;
    background-image: linear-gradient(#34495E, #34495E);
    background-position: 50% 50%;
    background-repeat: no-repeat;
    background-size: 0% 100%;
    transition: transform 0.5s, background-size 0.5s, background-color 1s,
                color 0.5s, box-shadow 0.5s, border-color 0.5s;
}

.nav-button:hover {
    transform: scale(1.03);
    background-size: 100% 100%;
    background-color: #34495E;
    color: white;
    border-color: #34495E;
    box-shadow: 0 0 0 3px rgba(52, 73, 94, 0.2);
}

.footer {
    font-weight: bold;
    width: 100%;
    padding: 1vh 0;
    position: absolute;
    bottom: 0;
    text-align: center;
    color: #ECF0F1;
    background: #34495E;
    box-shadow: 0 -5px 20px rgba(0, 0, 0, 0.2);
}

@media (max-width: 768px) {
    .container {
        padding: 2vh;
        margin-left: 3.4vh;
        margin-right: 3.4vh;
    }

    .icons-row {
        grid-template-columns: 1fr;
        gap: 2vh;
    }

    .footer {
        margin-top: 3.4vh;
        position: relative;
    }
}