:root {
    --bg-color: #000000;
    --text-color: #ffffff;
    --border-color: #ffffff;
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-color);
    margin: 0;
    padding: 2rem;
    line-height: 1.6;
    font-size: 14px;
}

#app {
    max-width: 1200px;
    margin: 0 auto;
}

.io-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0;
    border: none;
}

@media (min-width: 900px) {
    .io-container {
        grid-template-columns: 1fr 1fr;
        height: calc(100vh - 4rem);
    }
    .input-container {
        border-bottom: none;
        border-right: none;
    }
}

.input-container, .output-container {
    background-color: var(--bg-color);
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    border: none;
}

.input-container {
    border-bottom: none;
}

@media (min-width: 900px) {
    .input-container, .output-container {
        height: 100%;
        box-sizing: border-box;
    }
}

.container-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-shrink: 0;
}

.container-header label {
    font-weight: 500;
}

.buttons {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

#svg-input {
    width: 100%;
    flex-grow: 1;
    background-color: var(--bg-color);
    color: var(--text-color);
    border: none;
    padding: 0;
    font-family: monospace;
    font-size: 13px;
    resize: none;
    box-sizing: border-box;
    min-height: 200px;
}

#svg-input:focus {
    outline: none;
}

#svg-input:focus {
    outline: 1px solid var(--border-color);
}

#svg-file-input {
    display: none;
}

#scale-input {
    width: 50px;
    padding: 0.25rem 0.5rem;
    background-color: var(--bg-color);
    color: var(--text-color);
    border: 1px dotted var(--border-color);
}

button {
    background-color: var(--bg-color);
    color: var(--text-color);
    border: 1px dotted var(--border-color);
    padding: 0.25rem 1rem;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.2s;
}

button:hover {
    background-color: var(--text-color);
    color: var(--bg-color);
}

button.hidden {
    display: none;
}

.output-container {
    gap: 1rem;
}

#output-area {
    flex-grow: 1;
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    overflow: auto;
    min-height: 200px;
}

#output-area img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    background-image: 
        linear-gradient(45deg, #222 25%, transparent 25%), 
        linear-gradient(-45deg, #222 25%, transparent 25%), 
        linear-gradient(45deg, transparent 75%, #222 75%), 
        linear-gradient(-45deg, transparent 75%, #222 75%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
}

#output-area p {
    color: #888;
}

#output-info {
    text-align: right;
    font-size: 0.8rem;
    color: #888;
    min-height: 1.2em;
    flex-shrink: 0;
}