:root {
    --gb-darkest: #0f380f;
    --gb-dark: #306230;
    --gb-light: #8bac0f;
    --gb-lightest: #9bbc0f;
    --gb-gray: #d3d3d3;
    --gb-dark-gray: #a9a9a9;
}

body {
    background-color: #333;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    font-family: 'Press Start 2P', cursive;
    color: var(--gb-darkest);
}

#app-container {
    background-color: var(--gb-gray);
    border-radius: 10px 10px 40px 10px;
    padding: 25px;
    border: 2px solid #222;
    box-shadow: 5px 5px 15px rgba(0,0,0,0.5);
    width: 90%;
    max-width: 480px;
}

.screen {
    background-color: var(--gb-lightest);
    border: 15px solid var(--gb-dark-gray);
    border-top-width: 25px;
    border-bottom-width: 50px;
    border-radius: 8px;
    padding: 15px;
    box-shadow: inset 2px 2px 5px rgba(0,0,0,0.3);
    display: flex;
    flex-direction: column;
    gap: 15px;
}

h1 {
    font-size: 1.2em;
    text-align: center;
    margin: 0 0 10px 0;
    text-transform: uppercase;
    letter-spacing: 2px;
}

p#status-message {
    text-align: center;
    font-size: 0.7em;
    min-height: 1.5em;
    background-color: var(--gb-light);
    padding: 5px;
    border-radius: 3px;
    box-shadow: inset 1px 1px 2px rgba(0,0,0,0.2);
}

.controls {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.file-upload-wrapper {
    display: flex;
    align-items: center;
    gap: 10px;
}

input[type="file"] {
    display: none;
}

.custom-file-upload {
    background-color: var(--gb-dark);
    color: var(--gb-lightest);
    padding: 8px 12px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 0.7em;
    border: 2px solid var(--gb-darkest);
    box-shadow: 2px 2px 0px var(--gb-darkest);
}

.custom-file-upload:active {
    transform: translate(2px, 2px);
    box-shadow: none;
}

#file-name {
    font-size: 0.6em;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    flex-grow: 1;
}

.slider-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.slider-group label {
    font-size: 0.7em;
}

input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 10px;
    background: var(--gb-dark);
    outline: none;
    border-radius: 5px;
    border: 2px solid var(--gb-darkest);
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    background: var(--gb-darkest);
    cursor: pointer;
    border-radius: 2px;
}

input[type="range"]::-moz-range-thumb {
    width: 20px;
    height: 20px;
    background: var(--gb-darkest);
    cursor: pointer;
    border-radius: 2px;
}

input[type="range"]:disabled {
    opacity: 0.5;
}
input[type="range"]:disabled::-webkit-slider-thumb {
    background: var(--gb-dark);
}
input[type="range"]:disabled::-moz-range-thumb {
     background: var(--gb-dark);
}

.button-group {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 10px;
}

button, .button-style {
    font-family: 'Press Start 2P', cursive;
    background-color: var(--gb-dark);
    color: var(--gb-lightest);
    border: 2px solid var(--gb-darkest);
    padding: 10px 15px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 0.8em;
    box-shadow: 3px 3px 0px var(--gb-darkest);
    text-decoration: none;
    text-align: center;
}

button:active, .button-style:active {
    transform: translate(3px, 3px);
    box-shadow: none;
}

button:disabled {
    background-color: var(--gb-dark-gray);
    color: #777;
    cursor: not-allowed;
    box-shadow: none;
    transform: none;
}