/* Base Reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Smooth font and background color transitions */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    background-color: #F4F8FB; /* soothing light blue */
    color: #1D2087; /* deep brand blue */
    transition: background-color 0.5s ease, color 0.5s ease;
}

/* Header */
header {
    background-color: #1D2087; /* brand deep blue */
    color: white;
    padding: 1em;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1em;
    animation: fadeIn 1s ease-in;
}

.logo {
    max-height: 50px;
}

/* Navigation */
nav {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: center;
}

nav a {
    color: white;
    text-decoration: none;
    font-weight: bold;
    position: relative;
}

nav a:hover {
    color: #2B9DDB; /* sky blue hover */
}

nav a::after {
    content: '';
    display: block;
    width: 0;
    height: 2px;
    background: #2B9DDB;
    transition: width 0.3s;
    position: absolute;
    bottom: -4px;
    left: 0;
}

nav a:hover::after {
    width: 100%;
}

/* Hero Section */
.hero {
    background-color: #EAF6FD;
    padding: 2em;
    text-align: center;
    animation: slideUp 0.8s ease-out;
}

.hero .btn {
    display: inline-block;
    margin-top: 1em;
    padding: 0.6em 1.2em;
    background-color: #1D2087;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    transition: background-color 0.3s;
}

.hero .btn:hover {
    background-color: #2B9DDB;
}

/* Sections */
.about, .contact, .downloads {
    padding: 2em;
    max-width: 900px;
    margin: auto;
    animation: slideUp 0.8s ease-out;
}

.about h2, .contact h2, .downloads h2 {
    margin-bottom: 0.5em;
}

/* Footer */
footer {
    background-color: #1D2087;
    color: white;
    text-align: center;
    padding: 1em;
    margin-top: 2em;
    animation: fadeIn 1s ease-in;
}

/* Downloads List */
.download-list {
    list-style: none;
    padding: 0;
    margin-top: 1em;
}

.download-list li {
    margin-bottom: 1em;
}

.download-list a {
    background-color: #1D2087;
    color: white;
    padding: 0.5em 1em;
    text-decoration: none;
    border-radius: 5px;
    transition: background-color 0.3s;
}

.download-list a:hover {
    background-color: #2B9DDB;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from { transform: translateY(30px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

/* Responsive Layout */
@media (max-width: 600px) {
    header {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .logo {
        max-height: 40px;
        margin: 10px 0;
    }

    nav a {
        padding: 10px 5px;
        font-size: 0.95em;
    }

    .hero, .about, .contact, .downloads {
        padding: 1em;
    }

    h1 {
        font-size: 1.5em;
    }

    h2 {
        font-size: 1.2em;
    }
}