:root {
    --transition-time: 200ms;
    --animation-time: 200ms;
    --color-background: #1d1e2e;
    --color-text-default: #f0f0f0;
    --color-text-hint: #d0d0d0;
    --color-disabled: #212335;
    --color-inactive: #2d2f47;
    --color-active: #a1a8ff;
}

body {
    margin: 0;
    background-color: var(--color-background);
    padding: 0;
}

p,
a {
    display: inline-block;
    margin: 0;
    padding: 0;
    color: var(--color-text-default);
    font-weight: normal;
    font-size: 1em;
    font-family: 'Poppins', sans-serif;
}

a {
    cursor: pointer;
    margin: 0 8px;
    border: 2px solid var(--color-inactive);
    border-radius: 8px;
    padding: 4px 8px;
    min-width: 120px;
}

a:hover,
a:focus-visible {
    border-color: var(--color-active);
}

.text-tip {
    font-size: small;
}

.text-hidden {
    color: var(--color-text-hint);
}

/* Layout */

div.layout-container {
    box-sizing: border-box;
    margin: auto;
    padding: 32px 16px;
    width: fit-content;
}

div.layout-header {
    display: grid;
    gap: 8px;
    text-align: center;
}

div.picross-row {
    display: flex;
    gap: 4px;
}

div.layout-content {
    display: grid;
    justify-content: center;
    gap: 4px;
    /* visually centered */
    margin-left: -32px;
    padding: 32px 0;
}

p.picross-hint {
    width: 24px;
    height: 24px;
    color: var(--color-text-hint);
    line-height: 24px;
    text-align: center;
}

button.picross-button {
    transition: var(--animation-time) ease-in-out background-color;
    border: none;
    background-color: var(--color-inactive);
    width: 24px;
    height: 24px;
}

button.state-active {
    background-color: var(--color-active) !important;
}

button.state-ignore {
    background-color: var(--color-disabled) !important;
}

div.layout-footer {
    text-align: center;
}

p.layout-timer {
    padding: 16px 0;
}

/* Certificate */

div.layout-document {
    position: relative;
    width: 11in;
    height: 8.5in;
    overflow: hidden;
}

div.layout-document span {
    position: absolute;
    background-color: white;
    color: red;
}

div.layout-document span#name {
    top: 3in;
    left: 3.75in;
    width: 3.5in;
    font-size: 2em;
    text-align: center;
}

div.layout-document span#time {
    top: 4in;
    left: 6in;
}

div.layout-document span#date {
    top: 3.67in;
    left: 4.8in;
    padding: 0 32px;
}

div.layout-document img#background {
    width: 100%;
    height: 100%;
}

@media print {
    @page {
        size: letter landscape;
        margin: 0;
    }

    .no-print {
        display: none !important;
    }
}