:root {
    --background: #ffe1d4;
    --background-2: #f7f0f0;
    --foreground: #800;
    --box-tab-background: #efc2c2;
    --box-border: #800;
    --box-content-background: #fff;
}

* {
    padding: 0;
    margin: 0;
}

body {
    background: linear-gradient(0deg, var(--background-2), var(--background));
    color: var(--foreground);

    width: 100%;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;

    font-family: Arial, Helvetica, sans-serif;
}

main {
    width: 50%;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

footer {
    border-top: 1px solid var(--box-border);
    padding-top: 4px;
}

/** FORM */
button[type=submit] {
    background: linear-gradient(0deg, var(--box-tab-background), var(--background));
    padding: 8px;
    font-size: 18px;
    border: 1px solid var(--box-border);
}

button[type=submit]:hover {
    background: linear-gradient(180deg, var(--box-tab-background), var(--background));
    cursor: pointer;
}

#form-upload-wrapper {
    background: var(--background-2);
    padding: 32px 0;
    color: var(--foreground);
    border: 4px dashed var(--box-border);
}

#form-upload-wrapper:hover {
    background: var(--background);
    cursor: pointer;
}

/** BOX */
.box {
    border: 2px solid var(--box-border);
}

.box:has(.content)>.tab {
    background: var(--box-tab-background);
    border-bottom: 2px solid var(--box-border);
    padding: 8px;
    font-weight: bold;
}

.box:has(.tab)>.content {
    background: var(--box-content-background);
    padding: 8px;
}

/** SHORTCUTS */
.column {
    display: flex;
    flex-direction: column;
}

.row {
    display: flex;
    flex-direction: row;
}

.grow {
    flex-grow: 1;
}

.grid {
    display: grid;
}

.grid-3 {
    grid-template-columns: auto auto auto;
}

.justify-center {
    justify-content: center;
}

.align-center {
    align-items: center;
}

.pad-4 {
    padding: 4px;
}

.gap-8 {
    gap: 8px;
}

.gap-4 {
    gap: 4px;
}