@import url('https://fonts.googleapis.com/css?family=PT+Mono');

/* CSS Variables */
:root {
    --font-primary: 'PT Mono', monospace;
    --color-canvas: #fff;
    --color-background-fallback: #aab6ea;
    --color-gradient-start: #f8c1ff;
    --color-gradient-end: #fffbc4;
    --color-border: rgba(30, 30, 30, 0.51);
    --color-box-shadow-light: rgba(0, 0, 0, 0.2);
    --color-box-shadow-dark: rgba(0, 0, 0, 0.15);
    --color-tooltip-bg: rgba(255, 242, 242, 0.39);
    --color-tooltip-icon: #ff347e;
    --color-tooltip-text: #1b1b1b;
    --color-tooltip-arrow: #212121;
    --transition-speed: 0.2s;
    --border-radius: 30px;
    --max-content-width: 500px;
    --font-size-small: 11px;
    --font-size-medium: 14px;
}

/* Body Styling */
body {
    background: var(--color-background-fallback);
    background: linear-gradient(to left, var(--color-gradient-start), var(--color-gradient-end));
    font-family: var(--font-primary);
    text-align: center;
    margin: 10rem auto;
    max-width: var(--max-content-width);
}

/* Typography */
h1 {
    font-weight: 600;
    font-size: var(--font-size-medium);
    text-transform: uppercase;
}

h2,
p,
a {
    font-size: var(--font-size-small);
    text-transform: uppercase;
}

/* Colour palette options */
#colourPalette .color-btn {
    box-shadow: 0 1px 8px 0 var(--color-box-shadow-light), 0 6px 20px 0 var(--color-box-shadow-dark);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    cursor: pointer;
    display: inline-block;
    height: 30px;
    width: 30px;
    margin: 1rem 0;
    transition: filter var(--transition-speed) ease-in;
}

#colourPalette .color-btn:hover {
    filter: brightness(85%);
}

/* Drawing canvas */
#drawingCanvas {
    display: table;
    width: 100%;
    background-color: var(--color-canvas);
    border: 1px solid var(--color-border);
    border-radius: 5px;
    margin: 10px auto;
    cursor: crosshair;
}

/* Tooltip */
.tooltip-container {
    position: fixed;
    bottom: 3rem;
    right: 5rem;
}

.tooltip-container .help__tooltip-content {
    opacity: 0;
    visibility: hidden;
    background-color: var(--color-tooltip-bg);
    color: var(--color-tooltip-text);
    text-align: center;
    padding: 12px;
    margin-bottom: 12px;
    border: dashed 2px var(--color-tooltip-text);
    border-radius: var(--border-radius);
    position: absolute;
    z-index: 1;
    width: 150px;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    transition: opacity var(--transition-speed) ease-in-out, visibility var(--transition-speed);
}

.tooltip-container .fa-circle-question:hover {
    color: var(--color-tooltip-icon);
}

.tooltip-container:hover .help__tooltip-content {
    opacity: 1;
    visibility: visible;
}

.tooltip-container .help__tooltip-content::after {
    content: "";
    position: absolute;
    top: 100%;
    left: 50%;
    margin-left: -6px;
    border: 6px solid;
    border-color: var(--color-tooltip-arrow) transparent transparent transparent;
}