:root {
    --light-tan: #f5f0f0;
    --light-pink: #dcbac8;

    --dark-purple: #452744;
    --dark-red: #381d25;
    --dark-aqua: #085844;
    --dark-pink: #c68cac;

    --tan: #bdaea6;
    --aqua: #68c7bb;
    --pink: #ec86a7;

    --shadow: rgba(69, 39, 68, 0.5);
}

html {
    font-family: Helvetica Neue, Helvetica, Arial, sans-serif;
    background-color: var(--light-tan);
    color: var(--dark-purple);
}

header {
    display: flex;
    flex-direction: row;
    gap: 1rem;
    align-items: center;
    margin: 1rem;
    justify-content: center;
}

h1 {
    text-align: center;
}

button {
    border-color: var(--tan);
    background-color: var(--light-tan);
    color: var(--dark-red);
    border-radius: 4px;
    border-width: 1px;
    border-style: solid;
    padding: 2px 5px;
    box-shadow: 0 1px 1px var(--tan), inset 0 1px 1px white;
}

button:active {
    box-shadow: inset 0 1px 2px var(--tan), 0 1px 1px white;
}

button:disabled {
    opacity: 0.5;
}

#controls {
    display: flex;
    flex-direction: row;
    align-items: flex-start;
    gap: 1rem;
}

#menu {
    display: flex;
    flex-direction: row;
    gap: 1rem;
}

#menu ul {
    margin: 0;
    padding: 0;
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
    align-items: center;
}

fieldset {
    display: flex;
    flex-direction: row;
    justify-content: space-evenly;
    align-items: center;
    gap: 1rem;
    border: 1px solid var(--tan);
    border-radius: 4px;
    padding: 6px;
}

#tools-palette {
    flex-wrap: wrap;
    justify-content: center;
}

#colour-palette {
    flex-wrap: wrap;
    justify-content: flex-start;
}

fieldset input[type="number"] {
    width: 4rem;
}

input {
    border-color: var(--tan);
    border-style: solid;
    border-radius: 4px;
}

input[type="file"] {
    border-width: 0;
}

input[type="radio"] + label {
    background-color: var(--light-tan);
    border: 1px solid var(--tan);
    border-radius: 4px;
    padding: 4px;
    box-shadow: 0 1px 1px var(--tan), inset 0 1px 1px white;
}

input[type="radio"]:checked + label {
    box-shadow: inset 0 1px 2px var(--tan), 0 1px 1px white;
}

input[type="radio"] + label span {
    margin: 4px;
}


input[type="number"], input[type="color"] {
    border-width: 1px;
}

input[type="radio"] {
    margin-left: -99999px;
    position: absolute;
}

main {
    display: flex;
    align-items: center;
    justify-content: center;
}

#swatch {
    border: 1px solid var(--tan);
    border-radius: 2px;
    width: min(100vw, 800px);
    max-height: 80vh;
    background-color: white;
}

#logo {
    color: var(--dark-purple);
    margin: 0;
    font-size: 45px;
    display: flex;
    align-items: center;
}

#logo img {
    width: 7rem;
}

.previews {
    display: flex;
    flex-direction: row;
    max-width: 100vw;
}

.preview {
    image-rendering: pixelated;
    flex: 1;
    min-width: 0;
    object-fit: contain;
    align-items: center;
}

#open-file-dlg-preview {
    transform: scale(1.0, 0.8);
}

.spinner {
    flex: 1;
    font-size: 160px;
    animation-name: spin;
    font-family: Arial, Helvetica, sans-serif;
    animation-duration: 1000ms;
    animation-iteration-count: infinite;
    animation-timing-function: linear; 
    position: absolute;
    width: 135px;
    height: 257px;
    text-align: center;
    left: calc(50vw - 135px/2);
    top: calc(50vh - 257px/2);
    color: darkviolet;
    display: none;
}

dialog {
    border: 1px solid var(--tan);
    background-color: var(--light-tan);
    color: var(--dark-purple);
    border-radius: 4px;
    box-shadow: 0 2px 10px var(--shadow);
}

dialog form {
    border: 0;
    box-shadow: none;
    display: flex;
    flex-direction: column;
}

dialog form div {
    display: flex;
    flex-direction: row;
}

@keyframes spin {
    from {
        transform:rotate(0deg);
    }
    to {
        transform:rotate(360deg);
    }
}