/* Base styles for Inter font and general layout */
body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 20px;
    background-color: #eef2f7;
    color: #333;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    min-height: 100vh;
}

/* Container for the main content */
.container {
    max-width: 900px;
    width: 100%;
    margin: 30px 20px;
    background: #fff;
    padding: 30px 40px;
    border-radius: 12px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

/* Headings */
h1 {
    color: #0056b3;
    text-align: center;
    margin-bottom: 25px;
    font-size: 2.2em;
    font-weight: 700;
    /* Inter Bold */
}

h2 {
    color: #007bff;
    margin-top: 30px;
    margin-bottom: 15px;
    padding-bottom: 5px;
    border-bottom: 1px solid #eee;
    font-size: 1.6em;
    font-weight: 600;
    /* Inter Semi-Bold */
}

h3 {
    color: #0060df;
    margin-top: 25px;
    margin-bottom: 10px;
    font-size: 1.3em;
    font-weight: 600;
    /* Inter Semi-Bold */
}

/* Introductory text box */
.intro-text {
    background-color: #e0f7fa;
    border-left: 6px solid #00bcd4;
    padding: 15px 20px;
    margin-bottom: 30px;
    color: #006064;
    border-radius: 6px;
    font-size: 1.1em;
}

/* Section spacing */
.input-section,
.options-section,
.output-section,
.instructions-section {
    margin-bottom: 30px;
}

/* Input group styling */
.input-group {
    margin-bottom: 20px;
}

.input-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    /* Inter Semi-Bold */
    color: #555;
    font-size: 1.05em;
}

.input-group input[type="url"],
.input-group input[type="text"],
.input-group select {
    padding: 12px 15px;
    border: 1px solid #cce0ff;
    /* Lighter blue border */
    border-radius: 6px;
    font-size: 1em;
    width: 100%;
    box-sizing: border-box;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.input-group input:focus,
.input-group select:focus {
    border-color: #007bff;
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.25);
    outline: none;
}

.input-group small {
    display: block;
    margin-top: 5px;
    color: #666;
    font-size: 0.85em;
}

/* Styling for option groups */
.options-group {
    background-color: #f8faff;
    padding: 25px;
    border-radius: 8px;
    margin-top: 25px;
    border: 1px solid #e3f2fd;
}

/* Checkbox group styling */
.checkbox-group {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
}

.checkbox-group input[type="checkbox"] {
    margin-right: 12px;
    transform: scale(1.3);
    /* Slightly larger checkbox */
}

/* Button styling */
button {
    background-color: #28a745;
    /* Green for primary action */
    color: white;
    padding: 12px 25px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 1.1em;
    margin-top: 20px;
    transition: background-color 0.3s ease, transform 0.2s ease;
    width: auto;
    /* Allow button to size naturally */
    display: inline-block;
    /* For proper margin */
}

button:hover {
    background-color: #218838;
    transform: translateY(-2px);
}

#copyCommandBtn {
    background-color: #007bff;
    /* Blue for copy action */
    margin-top: 15px;
}

#copyCommandBtn:hover {
    background-color: #0056b3;
}

/* Command output area */
.command-output {
    margin-top: 20px;
    background-color: #e9ecef;
    padding: 20px;
    border-radius: 8px;
    position: relative;
    border: 1px dashed #ced4da;
}

.command-output pre {
    white-space: pre-wrap;
    /* Wrap long commands */
    word-break: break-all;
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 0.95em;
    color: #333;
    background-color: #f8f9fa;
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
    /* Allow horizontal scroll for very long commands */
}

.status-message {
    margin-top: 10px;
    font-size: 0.9em;
    color: #007bff;
    /* Blue for copy status */
}

/* Instructions section */
.instructions-section ol {
    padding-left: 25px;
}

.instructions-section li {
    margin-bottom: 15px;
    font-size: 1em;
}

.instructions-section code {
    background-color: #f0f0f0;
    padding: 3px 6px;
    border-radius: 4px;
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 0.9em;
    color: #c7254e;
    /* Darker red for code */
}

.instructions-section pre code {
    display: block;
    padding: 10px;
    background-color: #f8f9fa;
    border: 1px solid #e9ecef;
    border-radius: 5px;
    margin-top: 10px;
    margin-bottom: 10px;
    overflow-x: auto;
}

.instructions-section a {
    color: #007bff;
    text-decoration: none;
    transition: color 0.2s ease;
}

.instructions-section a:hover {
    color: #0056b3;
    text-decoration: underline;
}

/* Hide or show groups based on checkbox state */
#audioFormatGroup,
#videoQualityGroup {
    display: none;
    /* Hidden by default, script will show/hide */
    flex-direction: column;
    /* Ensure elements stack vertically */
}

/* Tab styling */
.tabs {
    display: flex;
    margin-bottom: 20px;
    border-bottom: 2px solid #ddd;
}

.tab-button {
    background-color: #f0f0f0;
    border: 1px solid #ddd;
    border-bottom: none;
    padding: 10px 20px;
    cursor: pointer;
    font-weight: 600;
    border-top-left-radius: 8px;
    border-top-right-radius: 8px;
    transition: background-color 0.3s ease;
    margin-right: 5px;
}

.tab-button:hover {
    background-color: #e0e0e0;
}

.tab-button.active {
    background-color: #fff;
    border-color: #007bff;
    border-bottom: 2px solid #fff;
    /* Overlap the bottom border */
    color: #007bff;
}

.tab-content {
    display: none;
    /* Hidden by default */
    padding: 20px 0;
    border-top: 1px solid #eee;
    /* Visual separation from tabs */
}

.tab-content.active {
    display: block;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .container {
        margin: 15px 10px;
        padding: 20px;
    }

    h1 {
        font-size: 1.8em;
    }

    h2 {
        font-size: 1.4em;
    }

    button {
        width: 100%;
        margin-top: 15px;
    }

    .tabs {
        flex-direction: column;
    }

    .tab-button {
        margin-right: 0;
        margin-bottom: 5px;
        border-radius: 6px;
        border-bottom: 1px solid #ddd;
    }

    .tab-button.active {
        border-bottom: 1px solid #fff;
    }
}