* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background: #0b0c10;
    color: #e6e6e6;
    font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
    min-height: 100vh;
}

.app {
    max-width: 1200px;
    margin: 0 auto;
    padding: 24px;
}

.app-header h1 {
    font-weight: 700;
    letter-spacing: 0.5px;
    margin-bottom: 16px;
}

.upload {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.file-label .btn {
    background: #1f2833;
    border: 1px solid #3a4a5a;
    color: #e6e6e6;
    padding: 8px 12px;
    border-radius: 8px;
    cursor: pointer;
}

.file-name {
    opacity: 0.8;
}

.workspace {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 16px;
}

.canvas-wrap {
    background: #0f1115;
    border: 1px solid #222831;
    border-radius: 12px;
    padding: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 300px;
}

#canvas1 {
    width: 100%;
    height: auto;
    image-rendering: pixelated;
}

.sidebar {
    background: #0f1115;
    border: 1px solid #222831;
    border-radius: 12px;
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.control {
    display: grid;
    grid-template-columns: 1fr;
    gap: 6px;
}

.control input[type="range"] {
    width: 100%;
}

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

.buttons {
    display: flex;
    gap: 8px;
}

.btn {
    background: #1f2833;
    border: 1px solid #3a4a5a;
    color: #e6e6e6;
    padding: 8px 12px;
    border-radius: 8px;
    cursor: pointer;
}

.btn:hover {
    background: #263241;
}

.btn-secondary {
    background: transparent;
}

.text-panel {
    margin-top: 16px;
    background: #0f1115;
    border: 1px solid #222831;
    border-radius: 12px;
    padding: 12px;
}

#asciiText {
    max-height: 360px;
    overflow: auto;
    white-space: pre;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    font-size: 10px;
    line-height: 1;
}

@media (max-width: 960px) {
    .workspace {
        grid-template-columns: 1fr;
    }
}