/* General Body & Typography */
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    background-color: #f4f7f9;
    color: #333;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 20px;
}

h1, h2, h3, h4 {
    color: #0d47a1; /* Dark Blue */
    line-height: 1.2;
}

h1 {
    font-size: 2.5em;
    border-bottom: 2px solid #e0e0e0;
    padding-bottom: 10px;
    margin-bottom: 20px;
}

h2 {
    font-size: 2em;
    margin-top: 40px;
}

h3 {
    font-size: 1.5em;
    color: #1565c0; /* Medium Blue */
}

a {
    color: #1976d2; /* Standard Blue */
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* Header & Navigation */
header {
    background-color: #ffffff;
    padding: 15px 40px;
    border-bottom: 1px solid #ddd;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 1000;
}

header .logo {
    font-size: 1.8em;
    font-weight: bold;
    color: #0d47a1;
}

header nav ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

header nav ul li {
    display: inline-block;
    margin-left: 25px;
}

header nav ul li a {
    font-weight: 500;
    color: #333;
    font-size: 1.1em;
}

header nav ul li a:hover {
    color: #0d47a1;
    text-decoration: none;
}

/* Main Content Area */
main {
    padding: 20px 0;
}

.card {
    background: #fff;
    padding: 25px;
    margin-bottom: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

/* Footer */
footer {
    background-color: #263238; /* Dark Grey/Blue */
    color: #cfd8dc;
    padding: 40px 20px;
    margin-top: 40px;
}

footer .footer-container {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 20px;
}

footer .footer-column {
    flex: 1;
    min-width: 200px;
}

footer h4 {
    color: #fff;
    border-bottom: 1px solid #455a64;
    padding-bottom: 10px;
    margin-bottom: 15px;
}

footer ul {
    list-style: none;
    padding: 0;
}

footer ul li {
    margin-bottom: 10px;
}

footer ul li a {
    color: #b0bec5;
}

footer ul li a:hover {
    color: #fff;
}

footer .footer-disclaimer {
    text-align: center;
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid #455a64;
    font-size: 0.9em;
    color: #90a4ae;
}

/* Utility Classes */
.button, button {
    display: inline-block;
    background-color: #1976d2;
    color: #fff;
    padding: 12px 25px;
    border-radius: 5px;
    font-weight: bold;
    text-align: center;
    border: none;
    cursor: pointer;
}

.button:hover, button:hover {
    background-color: #1565c0;
    color: #fff;
    text-decoration: none;
}

blockquote {
    border-left: 4px solid #1976d2;
    padding-left: 20px;
    margin: 20px 0;
    font-style: italic;
    background-color: #e3f2fd;
    padding: 15px 20px;
    border-radius: 5px;
}

/* Form Styles */
form label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}

form input[type="text"],
form input[type="email"],
form textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    margin-bottom: 15px;
    box-sizing: border-box;
}

/* Responsive */
@media (max-width: 768px) {
    header {
        flex-direction: column;
        text-align: center;
    }
    header nav ul {
        margin-top: 15px;
    }
    header nav ul li {
        display: block;
        margin: 10px 0;
    }
    .footer-container {
        flex-direction: column;
    }
}