body {
    margin: 0;
    font-family: Arial, sans-serif;
    background-color: #0f172a; /* COLOR_BG */
    color: #e6edf7; /* COLOR_TEXT */
    display: flex;
    justify-content: center;
    align-items: flex-start;
    min-height: 100vh;
    padding: 20px;
    box-sizing: border-box;
}

.container {
    background-color: #1e293b; /* Dunkler als BG */
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
    width: 100%;
    max-width: 1250px; /* Breite vom Pygame Fenster */
}

.header {
    background-color: #0a0f1e; /* COLOR_UI_BAR */
    padding: 15px 20px;
    border-bottom: 1px solid #475569;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px 20px; /* Abstand zwischen Elementen */
}

.header h1 {
    margin: 0;
    font-size: 1.5em;
    color: #e6edf7;
    flex-shrink: 0; /* Nicht schrumpfen */
}

.controls {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-grow: 1; /* Nimmt verfügbaren Platz ein */
}

.info {
    width: 100%; /* Nimmt ganze Breite ein */
    font-size: 0.8em;
    color: #94a3b8; /* Leicht grauer Text */
    padding-top: 5px;
    border-top: 1px solid rgba(255,255,255,0.1);
    margin-top: 10px;
}

input[type="file"] {
    background-color: #334155;
    color: #e6edf7;
    border: 1px solid #475569;
    border-radius: 4px;
    padding: 8px 12px;
    cursor: pointer;
}

input[type="file"]::-webkit-file-upload-button {
    background-color: #4a5d7c;
    color: #e6edf7;
    border: none;
    padding: 8px 12px;
    border-radius: 4px;
    cursor: pointer;
    margin-right: 10px;
}

button {
    background-color: #334155;
    color: #e6edf7;
    border: none;
    border-radius: 4px;
    padding: 8px 15px;
    cursor: pointer;
    transition: background-color 0.2s;
}

button:hover {
    background-color: #475569;
}

.channel-display {
    padding: 8px 12px;
    border-radius: 4px;
    font-weight: bold;
    /* Farbe wird dynamisch per JS gesetzt */
}

canvas {
    background-color: #0f172a; /* COLOR_BG */
    display: block;
    cursor: default; /* Standard-Mauszeiger */
    border-top: 1px solid #475569;
}