* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: 'Fira Code', monospace;
    background-color: #121212;
    color: #ffffff;
    display: flex;
    flex-direction: column;
    height: 100vh;
}

.toolbar {
    background-color: #1e1e1e;
    padding: 10px 20px;
    display: flex;
    gap: 10px;
    border-bottom: 1px solid #333;
}

button {
    padding: 8px 12px;
    font-size: 14px;
    background-color: #333;
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

button:hover {
    background-color: #4caf50;
}

.container {
    display: flex;
    flex: 1;
    overflow: hidden;
}

.panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 15px;
    border-right: 1px solid #333;
    overflow: auto;
}

.panel:last-child {
    border-right: none;
}

textarea, pre {
    background-color: #1e1e1e;
    color: #f1f1f1;
    border: 1px solid #333;
    border-radius: 4px;
    padding: 15px;
    font-size: 14px;
    resize: none;
    flex: 1;
    margin: 0px;
    outline: none;
}

pre {
    white-space: pre-wrap;
    word-wrap: break-word;
}

.json-line {
    padding-left: 0px;
    position: relative;
}

.json-block {
    border-left: 2px solid transparent;
    padding-left: 20px;
    margin-left: -2px;
}

.json-block:hover {
    border-left-color: #4caf50;
    background-color: rgba(76, 175, 80, 0.05);
}

.collapsible > .content {
    display: block;
}

.collapsible[data-collapsed="true"] > .content {
    display: none;
}

.toggle {
    cursor: pointer;
    user-select: none;
    color: #ccc;
    margin-right: 5px;
}

.key   { color: #c792ea; }
.string { color: #6abf69; }
.number { color: #f78c6c; }
.boolean { color: #82aaff; }
.null { color: #ff5370; }

@media (max-width: 768px) {
    .container {
        flex-direction: column;
    }
    .panel {
        border-right: none;
        border-bottom: 1px solid #333;
        height: 50%;
    }
}

input[type="file"] {
    display: none;
}

label.upload-btn {
    padding: 8px 12px;
    font-size: 14px;
    background-color: #333;
    color: #fff;
    border-radius: 4px;
    cursor: pointer;
}

button:hover, label.upload-btn:hover {
    background-color: #4caf50;
}