/* General Styles */
body {
    font-family: 'Helvetica Neue', Arial, sans-serif;
    margin: 0;
    color: #333;
    background-color: #f4f7f6;
}

/* Header */
header {
    background-color: #fff;
    padding: 1rem 2rem;
    border-bottom: 1px solid #e0e0e0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.logo {
    font-size: 1.8rem;
    font-weight: bold;
    text-decoration: none;
    color: #2c3e50;
    display: inline-flex;
    align-items: center;
}

.logo-o {
    width: 1em;
    height: 1em;
    vertical-align: -0.125em;
}

.hero .logo-o {
    stroke: #fff;
}

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

nav li {
    margin-left: 2rem;
}

nav a {
    text-decoration: none;
    color: #34495e;
    font-weight: 500;
    font-size: 1rem;
    transition: color 0.3s ease;
}

nav a:hover {
    color: #007bff;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    padding: 6rem 2rem;
    text-align: center;
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.hero-content p {
    font-size: 1.3rem;
    margin-bottom: 2.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-button {
    background-color: #fff;
    color: #2c3e50;
    padding: 1rem 2.5rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: bold;
    font-size: 1.1rem;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.cta-button:hover {
    background-color: #f1f1f1;
}

/* Features Section */
.features {
    padding: 5rem 2rem;
    text-align: center;
    background-color: #fff;
}

.features h2 {
    font-size: 2.8rem;
    margin-bottom: 4rem;
    color: #2c3e50;
}

.feature {
    display: inline-block;
    width: 30%;
    margin: 0 1.5%;
    vertical-align: top;
}

.feature-icon {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    color: #007bff;
}

.feature-icon-img {
    width: 80px;
    height: 80px;
}

.feature h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: #2c3e50;
}

.feature p {
    color: #555;
    font-size: 1.1rem;
    line-height: 1.6;
}

/* Contact Section */
.contact {
    background-color: #f4f7f6;
    padding: 5rem 2rem;
    text-align: center;
}

.contact h2 {
    font-size: 2.8rem;
    margin-bottom: 2rem;
    color: #2c3e50;
}

#referral-form {
    max-width: 500px;
    margin: 0 auto;
}

#referral-form input {
    width: 100%;
    padding: 1rem;
    margin-bottom: 1rem;
    border: 1px solid #ccc;
    border-radius: 5px;
    box-sizing: border-box;
    font-size: 1rem;
}

#referral-form button {
    background-color: #007bff;
    color: #fff;
    padding: 1rem 2.5rem;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    font-weight: bold;
    font-size: 1.1rem;
    transition: background-color 0.3s ease;
}

#referral-form button:hover {
    background-color: #0056b3;
}

#form-message {
    margin-top: 1.5rem;
    font-size: 1.1rem;
}

/* Footer */
footer {
    background-color: #2c3e50;
    color: #fff;
    text-align: center;
    padding: 2rem;
}

/* Responsive Styles */
@media (max-width: 768px) {
    header {
        flex-direction: column;
        padding: 1rem;
    }

    .logo {
        margin-bottom: 1rem;
    }

    nav ul {
        justify-content: center;
    }

    nav li {
        margin: 0 1rem;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .hero-content p {
        font-size: 1.1rem;
    }

    .features {
        padding: 3rem 1rem;
    }

    .feature {
        width: 100%;
        margin: 0 0 3rem 0;
    }

    .contact {
        padding: 3rem 1rem;
    }

    #referral-form input {
        width: 100%;
    }
}