.drop-zone {
    width: 100%;
    min-height: 200px;
    border: 3px dashed var(--color-border);
    border-radius: var(--radius);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--spacing-lg);
    background-color: var(--color-light-gray);
    cursor: pointer;
    transition: all 0.2s ease;
}

.drop-zone:hover {
    border-color: var(--color-blue);
    background-color: rgba(0, 123, 255, 0.05);
}

.drop-zone.dragover {
    border-color: var(--color-green);
    background-color: rgba(30, 126, 52, 0.1);
    transform: scale(1.02);
}

[data-theme="dark"] .drop-zone {
    background-color: rgba(255, 255, 255, 0.02);
}

.workspace-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--color-border);
    margin-bottom: var(--spacing-md);
}

.tracing-controls {
    background-color: var(--color-light-gray);
    padding: var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    margin-bottom: var(--spacing-md);
}

[data-theme="dark"] .tracing-controls {
    background-color: rgba(255, 255, 255, 0.05);
}

.full-width-input {
    width: 100%;
    padding: 0.6rem;
    font-size: 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background-color: var(--color-white);
    color: var(--color-text);
}

[data-theme="dark"] .full-width-input {
    background-color: #2a2a2a;
}

.svg-layout {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

@media (min-width: 800px) {
    .svg-layout {
        flex-direction: row;
        align-items: stretch;
    }
    .preview-col, .code-col {
        flex: 1;
        display: flex;
        flex-direction: column;
    }
}

.preview-box {
    flex-grow: 1;
    min-height: 300px;
    background-color: var(--color-white);
    border: 1px dashed var(--color-border);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 10px;
}

/* Checkered background to see transparent SVGs */
.preview-box {
    background-image: linear-gradient(45deg, #eee 25%, transparent 25%, transparent 75%, #eee 75%, #eee 100%),
                      linear-gradient(45deg, #eee 25%, transparent 25%, transparent 75%, #eee 75%, #eee 100%);
    background-size: 20px 20px;
    background-position: 0 0, 10px 10px;
}

[data-theme="dark"] .preview-box {
    background-image: linear-gradient(45deg, #333 25%, transparent 25%, transparent 75%, #333 75%, #333 100%),
                      linear-gradient(45deg, #333 25%, transparent 25%, transparent 75%, #333 75%, #333 100%);
}

.preview-box svg {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
}

#svg-code {
    flex-grow: 1;
    width: 100%;
    min-height: 300px;
    padding: var(--spacing-md);
    font-size: 0.9rem;
    font-family: "Courier New", Courier, monospace;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    resize: none;
    background-color: #282c34;
    color: #e5c07b;
    white-space: pre;
    overflow-wrap: normal;
    overflow-x: auto;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 5px solid var(--color-light-gray);
    border-top: 5px solid var(--color-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto;
}

[data-theme="dark"] .spinner {
    border-color: #333;
    border-top-color: var(--color-blue);
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.advanced-settings {
    margin-top: 15px;
    border-top: 1px dashed var(--color-border);
    padding-top: 10px;
}

.advanced-settings summary {
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: bold;
    color: #777;
    user-select: none;
    transition: color 0.2s;
}

.advanced-settings summary:hover {
    color: var(--color-blue);
}

.settings-content {
    margin-top: 12px;
    padding: 12px;
    background-color: var(--color-white);
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
}

[data-theme="dark"] .settings-content {
    background-color: #222;
}

.toggle-container {
    display: flex;
    align-items: center;
    gap: 12px;
}

.toggle-label {
    font-size: 0.85rem;
    color: var(--color-text);
}

.switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
    flex-shrink: 0;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: #ccc;
    transition: .3s;
}

.slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: .3s;
}

input:checked + .slider {
    background-color: var(--color-blue);
}

input:checked + .slider:before {
    transform: translateX(20px);
}

.slider.round {
    border-radius: 24px;
}

.slider.round:before {
    border-radius: 50%;
}