body {
    font-family: sans-serif;
    padding: 20px;
}

.menu-container,
.protocol-type-container,
.protocol-select-container,
.protocol-view-container,
.form-container {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.menu-button,
.protocol-type-button,
.expand-button,
input[type="submit"],
select.protocol-select {
    display: block; /* Make buttons take full width */
    width: 80%;
    max-width: 400px; /* Limit max width */
    margin: 15px auto; /* Center buttons */
    padding: 20px;
    font-size: 1.8em; /* Large text */
    text-align: center;
    text-decoration: none;
    color: white;
    background-color: #007bff; /* Blue background */
    border: none;
    border-radius: 8px;
    cursor: pointer;
    box-shadow: 2px 2px 5px rgba(0,0,0,0.2);
    transition: background-color 0.2s ease;
}

.menu-button:hover,
.protocol-type-button:hover,
.expand-button:hover,
input[type="submit"]:hover {
    background-color: #0056b3; /* Darker blue on hover */
}

.add-button {
    background-color: #28a745; /* Green for add buttons */
}
.add-button:hover {
    background-color: #218838;
}

/* Make containers relative for absolute positioning of back link */
.menu-container,
.protocol-type-container,
.protocol-select-container,
.protocol-view-container,
.form-container {
    position: relative; /* Needed for absolute positioning inside */
    padding-top: 50px; /* Add padding so content doesn't overlap back link */
    padding-bottom: 30px; /* Ensure space below content */
}

/* Style for the top-right back link */
.back-link-top {
    position: absolute;
    top: 15px;
    right: 15px;
    font-size: 1.1em;
    color: #007bff;
    text-decoration: none;
    padding: 5px 10px;
    border: 1px solid #007bff;
    border-radius: 5px;
    background-color: #f8f9fa;
    transition: background-color 0.2s ease, color 0.2s ease;
}

.back-link-top:hover {
    background-color: #007bff;
    color: white;
    text-decoration: none;
}

.back-button {
     background-color: #6c757d; /* Grey for back */
     margin-top: 30px;
}
.back-button:hover {
     background-color: #5a6268;
}

select.protocol-select {
    font-size: 1.5em; /* Large text for dropdown */
    padding: 15px;
    width: 90%;
    max-width: 500px;
    margin-bottom: 20px;
    background-color: #e9ecef; /* Light grey background */
    border: 1px solid #ced4da;
    border-radius: 5px;
    box-sizing: border-box; /* Include padding in width */
    color: #333;
    -webkit-appearance: none; /* Optional: improve appearance consistency */
    -moz-appearance: none;
    appearance: none;
     /* Add a background arrow image for better UX if removing default appearance */
    background-image: url('data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22292.4%22%20height%3D%22292.4%22%3E%3Cpath%20fill%3D%22%23007bff%22%20d%3D%22M287%2069.4a17.6%2017.6%200%200%200-13-5.4H18.4c-5%200-9.3%201.8-12.9%205.4A17.6%2017.6%200%200%200%200%2082.2c0%205%201.8%209.3%205.4%2012.9l128%20127.9c3.6%203.6%207.8%205.4%2012.8%205.4s9.2-1.8%2012.8-5.4L287%2095c3.5-3.5%205.4-7.8%205.4-12.8%200-5-1.9-9.2-5.5-12.8z%22%2F%3E%3C%2Fsvg%3E');
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: .8em auto;
    padding-right: 2.5rem; /* Make space for the arrow */
}


.protocol-display img {
    max-width: 100%;
    height: auto;
    border: 1px solid #ccc;
    margin-bottom: 15px;
}

.expandable {
    margin-bottom: 10px;
    text-align: center;
}

.expand-button {
     width: 80%;
     max-width: 400px;
     background-color: #17a2b8; /* Teal for expandable */
     margin-bottom: 5px; /* Space before content */
}
.expand-button:hover {
     background-color: #138496;
}

.section-content {
    border: 1px dashed #ccc;
    padding: 15px;
    margin: 0 auto; /* Center content */
     width: 90%;
     max-width: 700px;
    display: none; /* Hidden by default */
    box-sizing: border-box;
}

.section-content img {
     border: none; /* Remove border from images inside expandable */
}

/* Basic Form Styling */
.form-container form label {
    display: block;
    margin-top: 15px;
    font-weight: bold;
    text-align: left;
    margin-left: 10%; /* Align with buttons */
}

.form-container form input[type="text"],
.form-container form textarea,
.form-container form select {
    width: 80%;
    padding: 10px;
    margin-top: 5px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 1.1em;
     box-sizing: border-box;
}

.form-container form textarea {
    height: 100px;
    resize: vertical;
}

.form-container form input[type="file"] {
     display: block;
     width: 80%;
     margin: 10px auto;
     padding: 10px;
     font-size: 1em;
}


h1, h2 {
    text-align: center;
     color: #333;
}