*,
*::before,
*::after {
    box-sizing: border-box;
}

html,
body,
main {
    height: 100%;
    width: 100%;
    margin: 0;
    padding: 0;
    font-family: sans-serif;
}

p, h1 {
    padding: 0;
    margin: 0;
}

.container,
.intro {
    margin: 16px 32px;
}

.container {
    display: flex;
    flex-direction: row;
    align-items: center;
}

.container.hidden {
    visibility: hidden;
}

.game-results {
    margin-bottom: 16px;
    display: block;
}

.game-results.undisplayed,
.evac-status.undisplayed,
.instructions.undisplayed {
    display: none;
}

.title {
    text-align: center;
    margin-bottom: 16px;
}

.game {
    flex: 0 0 75%;
    text-align: center;
    margin-right: 16px;
}

.hud {
    font-size: 18px;
    line-height: 1.2;
    flex: 0 1 auto;
}

.selected-cell {
    visibility: visible;
}

.selected-cell.hidden {
    visibility: hidden;
}

.selected-cell-type {
    display: inline-block;
    height: 14px;
    width: 14px;
    border-radius: 50%;
    background-color: transparent;
}

.selected-cell-data {
    margin-top: 16px;
}

.legend {
    padding: 0;
    margin: 32px 0 0;
    list-style: none;
}

.legend > li {
    margin-bottom: 8px;
}

.action-key {
    width: 25px;
    background-color: #ececec;
    color: #575757;
    display: inline-block;
    font-weight: bold;
    border: 2px solid #333333;
    text-align: center;
}

.intro {
    display: block;
    text-align: center;
    margin-bottom: 16px;
}

.instructions {
    margin-bottom: 32px;
}

.monster {
    font-weight: bold;
    color: #4b0082;
}

.keycode {
    font-weight: bold;
    text-shadow: 2px 2px #ff0000;
}

.restart-hint {
    font-style: italic;
    font-size: 14px;
    margin-bottom: 16px;
}

.evac-status {
    display: block;
    margin: 16px 0;
    color: #cccccc;
    text-shadow: 2px 2px #e3e3e3;
}

.evac-status.ready {
    font-weight: bold;
    color: green;
}