/* Reset default styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Arial', sans-serif;
    background-color: #f9f9f9;
    color: #333;
    line-height: 1.6;
    padding: 0;
    margin: 0;
}

/* Header */
header {
    background-color: #2c3e50;
    color: white;
    padding: 50px 0;
    margin-bottom: 50px;
    border-bottom: 5px solid #18bc9c;
}

header h1 {
    text-align: center;
    font-size: 3.5em;
    margin-bottom: 20px;
    letter-spacing: 1px;
}

nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
    padding-top: 15px;
}

nav ul li {
    margin: 0 25px;
}

nav ul li a {
    text-decoration: none;
    color: white;
    font-weight: bold;
    font-size: 1.2em;
    letter-spacing: 1px;
    transition: color 0.3s ease;
}

nav ul li a:hover {
    color: #18bc9c;
}

/* Main Content Sections */
.section {
    padding: 80px 20px;
    background-color: white;
    margin-bottom: 40px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

h2 {
    text-align: center;
    font-size: 2.5em;
    margin-bottom: 30px;
    color: #2c3e50;
    font-weight: bold;
    letter-spacing: 1px;
}

p {
    font-size: 1.1em;
    text-align: center;
    margin-bottom: 30px;
    line-height: 1.6;
}

/* Features Section */
ul {
    list-style: none;
    margin-left: 20px;
}

ul li {
    margin-bottom: 20px;
    font-size: 1.2em;
    line-height: 1.8;
    color: #555;
}

/* Demo Section */
.demo-credentials {
    text-align: center;
    font-size: 1.3em;
    background-color: #e0f7fa;
    padding: 30px;
    border-radius: 8px;
    margin-top: 20px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.demo-credentials code {
    background-color: #f1f1f1;
    padding: 12px;
    border-radius: 5px;
    font-weight: bold;
    font-size: 1.1em;
}

/* Button for Demo */
.demo-button {
    text-align: center;
    margin-top: 40px;
}

.demo-button .btn {
    background-color: #18bc9c;
    color: white;
    padding: 18px 40px;
    font-size: 1.4em;
    text-decoration: none;
    border-radius: 50px;
    display: inline-block;
    letter-spacing: 1px;
    transition: background-color 0.3s ease, transform 0.2s ease;
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.1);
}

.demo-button .btn:hover {
    background-color: #16a085;
    transform: scale(1.05);
}

.demo-button .btn:active {
    transform: scale(0.98);
}

/* Footer */
footer {
    background-color: #2c3e50;
    color: white;
    padding: 25px 0;
    text-align: center;
    margin-top: 50px;
}

footer p {
    font-size: 1.1em;
}

footer a {
    color: #18bc9c;
    text-decoration: none;
    font-weight: bold;
    transition: color 0.3s ease;
}

footer a:hover {
    color: #16a085;
}

/* Responsive Design */
@media (max-width: 768px) {
    header h1 {
        font-size: 2.8em;
    }

    nav ul {
        flex-direction: column;
        align-items: center;
    }

    nav ul li {
        margin: 10px 0;
    }

    .container {
        padding: 0 15px;
    }

    .section {
        padding: 60px 15px;
    }

    .demo-credentials {
        font-size: 1.1em;
    }

    .demo-button .btn {
        font-size: 1.2em;
        padding: 15px 30px;
    }

    footer p {
        font-size: 1em;
    }
}