body {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    font-family: 'Geist', sans-serif;
    background: white;
    margin: 0;
    padding: 20px;
    overflow: auto;
    box-sizing: border-box;
}

#interfaceContainer {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    position: relative;
}

#canvasContainer {
    position: relative;
    /* size set inline from JS */
    border: 0;
    z-index: 1;
    /* Prevent canvas selection and dragging */
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    -webkit-user-drag: none;
    -khtml-user-drag: none;
    -moz-user-drag: none;
    -o-user-drag: none;
    user-drag: none;
    touch-action: none;
}

/* Apply drag prevention to all canvas elements */
#canvasContainer canvas {
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    -webkit-user-drag: none;
    -khtml-user-drag: none;
    -moz-user-drag: none;
    -o-user-drag: none;
    user-drag: none;
    touch-action: none;
}

#topContainer, #bottomContainer {
    z-index: 10;
    position: relative;
}

#canvasContainer > pre {
    margin: 0;
    font-weight: 900;
    font-family: 'Geist', monospace;
    font-size: 1em !important;
    /* we scale via transform */
    /* Prevent text selection and dragging */
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    -webkit-user-drag: none;
    -khtml-user-drag: none;
    -moz-user-drag: none;
    -o-user-drag: none;
    user-drag: none;
    pointer-events: auto;
    touch-action: none;
}

.corner-label {
    position: absolute;
    color: black;
    font-size: 0.9rem;
    letter-spacing: 0.05em;
    user-select: none;
    -webkit-user-select: none;
    pointer-events: none;
    z-index: 10;
}

.top-left { top: 4px; left: 6px; }
.top-right { top: 4px; right: 6px; text-align: right; font-size: 2.7rem; line-height: 1; }
.bottom-left { bottom: 4px; left: 6px; }
.bottom-right { bottom: 4px; right: 6px; text-align: right; }
.model-switcher {
    display: flex;
    align-items: center;
    gap: 8px;
}
.model-arrow {
    cursor: pointer;
    font-weight: bold;
    pointer-events: auto;
    user-select: none;
    -webkit-user-select: none;
}

/* Base slider styling */
#asciiSlider, #sensitivitySlider, #smoothnessSlider {
    -webkit-appearance: none;
    appearance: none;
    width: 120px;
    height: 8px;
    background: #ddd;
    border-radius: 4px;
    cursor: pointer;
}

/* WebKit (Chrome, Safari) slider track */
#asciiSlider::-webkit-slider-track, #sensitivitySlider::-webkit-slider-track, #smoothnessSlider::-webkit-slider-track {
    -webkit-appearance: none;
    appearance: none;
    background: transparent;
}

/* WebKit (Chrome, Safari) slider thumb */
#asciiSlider::-webkit-slider-thumb, #sensitivitySlider::-webkit-slider-thumb, #smoothnessSlider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    height: 16px;
    width: 16px;
    border-radius: 50%;
    background: #000;
    cursor: pointer;
    box-shadow: 0 0 2px rgba(0,0,0,0.3);
}

/* Firefox slider track */
#asciiSlider::-moz-range-track, #sensitivitySlider::-moz-range-track, #smoothnessSlider::-moz-range-track {
    background: #ddd;
    height: 8px;
    border-radius: 4px;
}

/* Firefox slider thumb */
#asciiSlider::-moz-range-thumb, #sensitivitySlider::-moz-range-thumb, #smoothnessSlider::-moz-range-thumb {
    height: 16px;
    width: 16px;
    border-radius: 50%;
    background: #000;
    cursor: pointer;
    box-shadow: 0 0 2px rgba(0,0,0,0.3);
}

/* Dark theme styling */
.dark-theme #asciiSlider, .dark-theme #sensitivitySlider, .dark-theme #smoothnessSlider {
    background: #555;
}

.dark-theme #asciiSlider::-webkit-slider-thumb, .dark-theme #sensitivitySlider::-webkit-slider-thumb, .dark-theme #smoothnessSlider::-webkit-slider-thumb {
    background: #fff;
}

.dark-theme #asciiSlider::-moz-range-track, .dark-theme #sensitivitySlider::-moz-range-track, .dark-theme #smoothnessSlider::-moz-range-track {
    background: #555;
}

.dark-theme #asciiSlider::-moz-range-thumb, .dark-theme #sensitivitySlider::-moz-range-thumb, .dark-theme #smoothnessSlider::-moz-range-thumb {
    background: #fff;
}

/* Clickable filename styling */
#fileInfo {
    cursor: pointer;
}

/* Development FPS counter */
#fpsCounter {
    position: fixed;
    top: 4px;
    right: 6px;
    padding: 2px 4px;
    background: rgba(0, 0, 0, 0.5);
    color: #0f0;
    font-family: monospace;
    font-size: 12px;
    line-height: 1;
    pointer-events: none;
    z-index: 1000;
}