body {
    font-family: 'Open Sans', sans-serif;
    line-height: 1.8;
    background: #f9fafb;
}

section.hero {
    background: linear-gradient(to right, #0f766e, #1e3a8a);
    transition: background 0.5s ease;
}

section img {
    transition: opacity 0.3s ease;
}

section img:hover {
    opacity: 0.5;
}

nav {
    transition: background 0.3s ease;
}

nav ul li a {
    transition: all 0.3s ease-in-out;
}

nav ul li a:hover {
    transform: scale(1.1);
    color: #1e3a8a;
}

article section {
    transition: transform 0.4s ease, box-shadow 0.4s ease;
}

article section:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
}

h1 {
    color: #ffffff;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

h2, h3 {
    color: #0f766e;
    transition: color 0.3s ease;
}

h2:hover, h3:hover {
    color: #1e3a8a;
}

a {
    transition: color 0.3s ease, text-decoration 0.3s ease;
}

footer {
    background: linear-gradient(to right, #0f766e, #1e3a8a);
}

/* Animations */
@keyframes fade-in {
    0% { opacity: 0; transform: scale(0.9); }
    100% { opacity: 1; transform: scale(1); }
}

@keyframes slide-in {
    0% { opacity: 0; transform: translateY(40px); }
    100% { opacity: 1; transform: translateY(0); }
}

.animate-fade-in {
    animation: fade-in 1.5s ease-out;
}

.animate-slide-in {
    animation: slide-in 1.3s ease-out;
}

/* Responsive Design */
@media (max-width: 1024px) {
    section h1 {
        font-size: 2.5rem;
    }

    nav ul {
        gap: 1.5rem;
    }

    article section {
        padding: 1.5rem;
    }
}

@media (max-width: 768px) {
    section h1 {
        font-size: 2rem;
    }

    section p {
        font-size: 1rem;
    }

    nav ul {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }

    article section {
        padding: 1.25rem;
    }

    h2 {
        font-size: 1.75rem;
    }

    h3 {
        font-size: 1.25rem;
    }

    aside {
        margin-top: 2rem;
    }
}

@media (max-width: 480px) {
    section h1 {
        font-size: 1.5rem;
    }

    section p {
        font-size: 0.9rem;
    }

    nav ul li a {
        font-size: 0.95rem;
    }

    article section {
        padding: 1rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    h3 {
        font-size: 1.1rem;
    }
}