body {
    font-family: monospace;
    background-color: #ffffff;
    color: #000000;
    margin: 40px auto;
    max-width: 800px;
    padding: 0 20px;
}
h1 {
    font-size: 24px;
    font-weight: bold;
}
h2 {
    font-size: 16px;
    font-weight: normal;
}
textarea {
    width: 100%;
    height: 80px;
    font-family: monospace;
    font-size: 16px;
    padding: 10px;
    box-sizing: border-box;
    border: 1px solid #ccc;
    margin-bottom: 20px;
    resize: vertical;
}
button {
    padding: 10px 20px;
    font-size: 16px;
    font-family: monospace;
    background-color: #000;
    color: #fff;
    border: none;
    cursor: pointer;
    margin-bottom: 30px;
}
button:hover {
    background-color: #333;
}
button:disabled {
    background-color: #999;
    cursor: wait;
}
.result-item {
    position: relative;
    margin-bottom: 20px;
    padding-right: 120px; /* Leave space for the button */
    white-space: pre-wrap;
    word-wrap: break-word;
    line-height: 1.4;
}
.cipher-text {
    font-size: 1.5em; /* Size of a standard h2 */
    font-weight: bold;
    margin: 0;
    padding: 0;
}
.label {
    font-weight: bold;
    color: #aaa;
    font-size: 12px;
    margin: 4px 0 0 0;
    padding: 0;
}
.solution-btn {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    background-color: #f0f0f0;
    color: #333;
    border: 1px solid #ccc;
    padding: 6px 12px;
    font-size: 12px;
    margin: 0;
}
.solution-btn:hover {
    background-color: #ddd;
}
.modal-overlay {
    display: none;
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 1000;
    justify-content: center;
    align-items: center;
    padding: 20px;
    box-sizing: border-box;
}
.modal-overlay.active {
    display: flex;
}
.modal-window {
    background: #fff;
    padding: 20px;
    width: 100%;
    max-width: 600px;
    max-height: 100%;
    overflow-y: auto;
    box-sizing: border-box;
    border: 1px solid #ccc;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}
.modal-close {
    margin-top: 15px;
    background: #000;
    color: #fff;
    border: none;
    padding: 8px 16px;
    cursor: pointer;
    font-family: monospace;
    font-size: 14px;
}
.modal-close:hover {
    background: #333;
}
.sol-code {
    white-space: pre;
    overflow-x: auto;
    background: #f9f9f9;
    font-size: 14px;
    padding: 10px;
    margin-bottom: 15px;
    border-left: 3px solid #ccc;
    font-family: monospace;
}
.sol-label {
    font-weight: bold;
    font-size: 14px;
    color: #555;
    margin-bottom: 5px;
}