:root {
    --bg-color: #1c1c1c; 
    --text-color: #e0e0e0;
    --header-bg-color: #525252;
    --header-text-color: #e0e0e0;
    --settings-bg-color: #363636; 
    --settings-border-color: #707070; 
    --button-bg-color: #2a7ab7; 
    --button-text-color: #fff;
    --button-hover-bg-color: #1f557f; 
    --footer-bg-color: #13173a; 
    --footer-text-color: #e0e0e0;
    --input-border-color: #ffffff; 
    --input-focus-border-color: #ffffff; 
    --border-radius: 8px;
    --transition-duration: 0.3s;
    --max-element-width: 90%; 
}

body {
    font-family: 'Roboto Condensed', sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color var(--transition-duration), color var(--transition-duration);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

header {
    text-align: center;
    padding: 10px 0;
    background-color: var(--header-bg-color);
    color: var(--header-text-color);
    border-radius: var(--border-radius) var(--border-radius) 0 0;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
    transition: background-color var(--transition-duration), color var(--transition-duration);
}

main {
    display: flex;
    justify-content: space-between;
    margin-top: 10px;
}

.settings {
    flex: 1;
    max-width: 300px;
    background-color: var(--settings-bg-color);
    padding: 20px;
    border-radius: var(--border-radius);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
    border: 1px solid var(--settings-border-color);
    transition: background-color var(--transition-duration), border-color var(--transition-duration);
}

.preview {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 10px;
}

canvas {
    background-color: #fff;
    border-radius: var(--border-radius);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
    width: 111px;
    height: 825px;
    transition: width 0.3s ease, height 0.3s ease, transform 0.3s ease;
}

canvas.horizontal {
    width: 825px;
    height: 111px;
    transform: rotate(0deg);
}

label {
    display: block;
    margin-top: 10px;
    font-weight: bold;
    color: var(--text-color);
}

input[type="number"],
input[type="file"],
input[type="color"],
input[type="text"],
select {
    width: var(--max-element-width);
    padding: 10px;
    margin-top: 5px;
    border-radius: var(--border-radius);
    border: 1px solid var(--input-border-color);
    background-color: #404040; 
    color: var(--text-color);
    transition: border-color var(--transition-duration), background-color var(--transition-duration), color var(--transition-duration);
}

input[type="number"]:focus,
input[type="file"]:focus,
input[type="color"]:focus,
input[type="text"]:focus,
select:focus {
    border-color: var(--input-focus-border-color);
    outline: none;
}

button {
    display: block;
    width: var(--max-element-width); 
    padding: 12px;
    margin-top: 15px;
    background-color: var(--button-bg-color);
    color: var(--button-text-color);
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 16px;
    transition: background-color var(--transition-duration), transform var(--transition-duration);
}

button:hover {
    background-color: var(--button-hover-bg-color);
    transform: translateY(-2px);
}

button:active {
    transform: translateY(0);
}

footer {
    text-align: center;
    padding: 10px 0;
    background-color: var(--footer-bg-color);
    color: var(--footer-text-color);
    border-radius: 0 0 var(--border-radius) var(--border-radius);
    box-shadow: 0 -2px 4px rgba(0, 0, 0, 0.5);
    transition: background-color var(--transition-duration), color var(--transition-duration);
}


#label-canvas {
    width: 50px;
    height: 825px;
    margin-left: 10px;
    background-color: #fff;
    border-radius: var(--border-radius);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

input#label-text {
    width: var(--max-element-width); 
    padding: 12px; 
    margin-top: 10px; 
    border-radius: var(--border-radius);
    border: 1px solid var(--input-border-color);
    background-color: #404040;
    color: var(--text-color);
    transition: border-color var(--transition-duration), background-color var(--transition-duration), color var(--transition-duration);
}

input#label-text:focus {
    border-color: var(--input-focus-border-color);
    outline: none;
}

button#download-label-png {
    background-color: var(--button-bg-color);
    color: var(--button-text-color);
    padding: 12px;
    margin-top: 10px;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: background-color var(--transition-duration), transform var(--transition-duration);
}

button#download-label-png:hover {
    background-color: var(--button-hover-bg-color);
    transform: translateY(-2px);
}

button#download-label-png:active {
    transform: translateY(0);
}


.section-header {
    display: flex;
    align-items: center;
    cursor: pointer;
    margin-top: 10px;
    color: var(--text-color);
}

.arrow {
    margin-right: 8px;
    transition: transform 0.3s ease; 
}

.rotate {
    transform: rotate(90deg);
}

.section-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease; 
    margin-left: 20px;
}

.section-content.open {
    max-height: 500px; 
    transition: max-height 0.5s ease; 
}

@media (max-width: 768px) {
    main {
        flex-direction: column;
    }

    .settings, .preview {
        flex: 1 1 100%;
        max-width: 100%;
    }

    canvas {
        margin: 0 auto;
    }
}