:root {
    --primary: #1e88e5;
    --secondary: #0d47a1;
    --background: #f9fafb;
    --text-dark: #1f2937;
    --text-light: #6b7280;

    --font-main: 'Inter', system-ui, sans-serif;
}

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

body {
    font-family: var(--font-main);
    background: var(--background);
    color: var(--text-dark);
}
.navbar {
    background: white;
    border-bottom: 1px solid #e5e7eb;
}

.nav-container {
    max-width: 1200px;
    margin: auto;
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--primary);
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    list-style: none;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
}
.nav-links a:hover {
    box-shadow: inset 0 -2px 0 var(--primary);
}
.nav-links a.active {
    color: var(--primary);
    border-bottom: 2px solid var(--primary);
}

.menu-btn {
    display: none;
    font-size: 1.5rem;
    background: none;
    border: none;
}


/* media query */

@media (max-width: 768px) {
    .nav-links {
        display: none;
        flex-direction: column;
        background: white;
        position: absolute;
        top: 65px;
        right: 10px;
        padding: 30px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        z-index: 1000;
        width: 100%;
    }

    .nav-links.show {
        display: flex;
    }

    .menu-btn {
        display: block;
    }
}