/* ref.css */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;600&display=swap');

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-text-size-adjust: 100%;
}

html, body {
    height: 100%;
    width: 100%;
    overflow-x: hidden;
}

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f4f4f4;
    font-size: 16px;
}

.page-wrapper {
    min-height: 100%;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

.fc-header {
    background-color: #3498db;
    color: #fff;
    text-align: center;
    padding: 0.5rem;
}

.fc-header h1 {
    margin: 0;
    font-size: 1.2rem;
}

.fc-nav {
    background-color: #2980b9;
    padding: 0.25rem;
}

.fc-nav select {
    width: 100%;
    padding: 0.25rem;
    font-size: 0.9rem;
    background-color: #fff;
    border: none;
    border-radius: 4px;
}

.fc-main {
    padding: 1rem;
    background-color: #ffffff;
}

section {
    margin-bottom: 1.5rem;
}

h2 {
    color: #2c3e50;
    border-bottom: 2px solid #3498db;
    padding-bottom: 0.5rem;
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

h3 {
    color: #34495e;
    margin-top: 1rem;
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

.code-block {
    background-color: #f8f9fa;
    border-radius: 4px;
    padding: 0.5rem;
    margin: 0.5rem 0;
    position: relative;
    overflow: hidden;
}

.code-block pre {
    margin: 0;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.code-block code {
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.75rem;
    white-space: pre-wrap;
    word-break: break-word;
}

.copy-btn {
    position: absolute;
    top: 0.25rem;
    right: 0.25rem;
    background-color: #3498db;
    color: white;
    border: none;
    border-radius: 4px;
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    cursor: pointer;
}

.fc-footer {
    background-color: #34495e;
    color: #ecf0f1;
    text-align: center;
    padding: 1rem;
    font-size: 0.75rem;
}

@media screen and (min-width: 768px) {
    body {
        font-size: 18px;
    }

    .fc-header {
        padding: 1rem;
    }

    .fc-header h1 {
        font-size: 2rem;
    }

    .fc-nav {
        padding: 0.5rem;
    }

    .fc-nav select {
        display: none;
    }

    .fc-nav ul {
        list-style-type: none;
        display: flex;
        justify-content: center;
    }

    .fc-nav ul li {
        margin: 0 0.5rem;
    }

    .fc-nav ul li a {
        color: #fff;
        text-decoration: none;
        font-weight: 600;
        font-size: 1rem;
        padding: 0.5rem 1rem;
    }

    .fc-main {
        max-width: 900px;
        margin: 0 auto;
        padding: 2rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    h3 {
        font-size: 1.25rem;
    }

    .code-block code {
        font-size: 0.9rem;
    }

    .copy-btn {
        font-size: 0.875rem;
    }
    
}