@import url('https://fonts.googleapis.com/css2?family=Fira+Code:wght@400;700&display=swap');

body {
    background-color: #1a1a1a;
    color: #e0e0e0;
    font-family: 'Fira Code', monospace;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    overflow: hidden;
}

#app-container {
    display: flex;
    gap: 2rem;
    background-color: #252525;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    border: 1px solid #333;
    transition: width 0.4s ease;
}

#canvas-container {
    position: relative;
    width: 600px;
    height: 600px;
    background-color: #111;
    border-radius: 8px;
    overflow: hidden;
    transition: width 0.4s ease, height 0.4s ease;
}

#main-canvas {
    width: 100%;
    height: 100%;
    display: block;
}

#drop-zone {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 2px dashed #444;
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    pointer-events: all; /* Allow clicking the button */
    z-index: 10;
    transition: background-color 0.3s, border-color 0.3s;
    background-color: #111;
}
#drop-zone p {
    pointer-events: none;
}
#drop-zone.hidden {
    opacity: 0;
    pointer-events: none;
}
body.drag-over #drop-zone {
    background-color: rgba(0, 180, 255, 0.1);
    border-color: #00b4ff;
}

#controls-container {
    width: 300px;
    display: flex;
    flex-direction: column;
}

.title { color: #00b4ff; text-align: center; margin-top: 0; margin-bottom: 0.25rem; }
.subtitle { text-align: center; font-size: 0.8rem; color: #888; margin-top: 0; margin-bottom: 2rem; }
h3 { border-bottom: 1px solid #444; padding-bottom: 0.5rem; margin-bottom: 1rem; }
.control-group { margin-bottom: 1rem; }
.slider-group { display: grid; grid-template-columns: 1fr 50px; grid-template-rows: auto auto; margin-bottom: 1rem; align-items: center; }
.slider-group label { grid-column: 1 / 2; margin-bottom: 0.5rem; }
.slider-group input[type="range"] { grid-column: 1 / 3; width: 100%; margin: 0; }
.slider-group input[type="number"] { grid-column: 2 / 3; grid-row: 1 / 2; width: 50px; background-color: #333; color: #eee; border: 1px solid #444; border-radius: 4px; text-align: center; font-family: 'Fira Code', monospace; padding: 2px; }
input[type="range"] { -webkit-appearance: none; height: 4px; background: #444; border-radius: 2px; cursor: pointer; }
input[type="range"]::-webkit-slider-thumb { -webkit-appearance: none; appearance: none; width: 16px; height: 16px; background: #00b4ff; border-radius: 50%; border: 2px solid #252525; }

.button-group {
    margin-top: auto;
    display: flex;
    gap: 10px;
}
.button-group button, #upload-btn-placeholder {
    flex-grow: 1;
    padding: 12px;
    background-color: #00b4ff;
    color: #111;
    border: none;
    border-radius: 6px;
    font-family: 'Fira Code', monospace;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.2s;
}
.button-group button:hover, #upload-btn-placeholder:hover {
    background-color: #33c8ff;
}
#upload-btn-placeholder {
    background-color: #333;
    color: #eee;
}
#upload-btn-placeholder:hover {
    background-color: #444;
}