:root {
    --primary-color: #009688;
    --secondary-color: #4CAF50;
    --primary-dark: #00796B;
    --accent-color: #4CAF50;
    --text-color: #333;
    --bg-light: #f4f4f4;
    --white: #ffffff;
    --transition-speed: 0.3s;
    --max-width: 75rem;
    --border-radius: 0.5rem;
    --shadow: 0 0.25rem 0.5rem rgba(0, 0, 0, 0.1);
}

* {
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    height: 100%;
}

body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    margin: 0;
    display: flex;
    flex-direction: column;
    min-height: 100vh; 
}

/* Navbar */
.navbar {
    background-color: var(--text-color);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: transform var(--transition-speed);
}

.nav-hidden {
    transform: translateY(-100%);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0rem;
    max-width: var(--max-width);
    margin: 0 6.5rem;
}

.nav-links {
    display: flex;
    gap: 0.5rem;
    list-style: none;
}

.nav-links a {
    color: var(--white);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    transition: background-color var(--transition-speed);
}

.nav-links a:hover,
.nav-links a.active {
    background-color: var(--primary-color);
    color: var(--white);
}

/* Footer */
.footer {
    background-color: #333;
    color: #ffffff;
    padding: 1rem 0.5rem;
    text-align: center;
    margin-top: auto; 
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 1rem;
    margin-bottom: 1rem;
}

.social-links a {
    color: #ffffff;
    font-size: 1.8rem;
    transition: color 0.3s;
}

.social-links a:hover {
    color: var(--primary-color);
}

@media (max-width: 1280px) {
    .nav-content {
        margin: 0;
    }
    .nav-links {
        gap: 0.1rem;
    }
}