:root {
    --primary-color: #3498db;
    --secondary-color: #2ecc71;
    --background-color: #f4f7f6;
    --text-color: #333;
    --card-background: #ffffff;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    font-family: var(--font-family);
    margin: 0;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
}

header {
    background-color: var(--card-background);
    box-shadow: 0 2px 4px var(--shadow-color);
    padding: 1rem 2rem;
    position: sticky;
    top: 0;
    z-index: 1000;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo a {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
    text-decoration: none;
}

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

nav ul li {
    margin-left: 2rem;
}

nav ul li a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.3s ease;
}

nav ul li a:hover {
    color: var(--primary-color);
}

.auth-buttons button {
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    cursor: pointer;
    font-weight: bold;
}

.login {
    background-color: transparent;
    color: var(--primary-color);
}

.signup {
    background-color: var(--primary-color);
    color: white;
}

main {
    padding: 2rem;
}

.hero {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    margin-bottom: 4rem;
}

.hero-content {
    max-width: 500px;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.hero p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

.cta-button {
    background-color: var(--secondary-color);
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1.1rem;
    font-weight: bold;
    transition: background-color 0.3s ease;
}

.cta-button:hover {
    background-color: #27ae60;
}

.hero-image img {
    max-width: 100%;
    border-radius: 10px;
}

.how-it-works,
.featured-mentors,
.community {
    margin-bottom: 4rem;
    text-align: center;
}

h2 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 2rem;
}

.steps {
    display: flex;
    justify-content: space-around;
    gap: 2rem;
}

.step {
    max-width: 300px;
}

.step-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    margin: 0 auto 1rem;
}

.mentor-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

footer {
    background-color: var(--primary-color);
    color: white;
    padding: 2rem;
    text-align: center;
}

.footer-content ul {
    list-style: none;
    padding: 0;
    margin-top: 1rem;
}

.footer-content ul li {
    display: inline;
    margin: 0 1rem;
}

.footer-content ul li a {
    color: white;
    text-decoration: none;
}

@media (max-width: 768px) {
    .hero {
        flex-direction: column;
        text-align: center;
    }

    .steps {
        flex-direction: column;
        align-items: center;
    }

    nav ul {
        display: none; 
    }
}