/*

Story Slides

Copyright © 2019-2022 Matthew Tylee Atkinson

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

*/

/*
 * Simple theme
 * Story mode (and introduction screen)
 *
 * FIXME: update docs
 * FIXME: print styles
 */

@media screen {
	:root {
		--body-width: 45rem;  /* Used in multiple places in the theme */
	}
}

html {
	font-family: Georgia, serif;
	font-size: 1.5rem;
	line-height: 1.5;
}

body {
	width: var(--body-width);
	max-width: calc(100% - 1em);
	margin: auto;
	margin-bottom: 1em;

	/* To fix the horizontal scrolling caused by wide images and tables - seems
	 * hacky but is also the way the pros are doing it... */
	overflow-x: hidden;
}

/* Images are sized to be drawn as widely as possible. Their heights are then
 * capped so that tall images fit on the screen vertically. */
img {
	display: block;
	width: 100%;
	max-height: 98vh;
	object-fit: contain;
}

/* If you have an image that's really wide and you want it to be able to break
 * out from the body column, this is the class for you!
 *
 * All tables will be rendered "wide" by default (this will only be visually
 * apparent if they're naturally wider than the body column).
 *
 * TODO: doc table wrapper part in the tutorial?
 * TODO: open the wide class to other elements?
 *
 * HT https://gomakethings.com/how-to-break-an-image-out-of-its-parent-container-with-css/
 * HT https://css-tricks.com/full-width-containers-limited-width-parents/
 */
img.wide,
.table-wrapper {
	left: 50%;
	margin-left: -50vw;
	margin-right: -50vw;
	max-width: 100vw;
	position: relative;
	right: 50%;
	width: 100vw;
}

/* This class allows an image to be rendered at its full height—even if that
 * will be taller than the viewport. */
img.tall { max-height: 100%; }

/* FIXME: doc */
img.really-inline,
img.natural-size {
	display: inline;
	width: calc((var(--width-px) / var(--scaled-image-px-to-percent)) * (var(--body-width) / 100));
}

/* FIXME: doc */
img.natural-size:not(.really-inline) { vertical-align: middle; }

figcaption { text-align: center; }

img + figcaption,
figcaption + img { margin-top: 0.5em; }

/* TODO: wide class for iframes? */
iframe {
	width: 100%;
	height: calc(var(--body-width) / (16 / 9));
}

pre { overflow: scroll; }

@media print {
	/* By default, make images 'not too big' */
	img {
		/* FIXME: removed: max-height: var(  rendered width); */
		display: block;
		width: 40%;
		object-fit: contain;
		margin: auto;
	}

	/* Not sure how to centre <iframe>s */
	iframe {
		width: 50%;
		height: calc(50% / (16 / 9));
	}
}

/*
 * Extras that apply when printed too
 */

figcaption a { overflow-wrap: break-word; }

/* Thanks https://fvsch.com/object-fit-decoration/ :-) */
img.border { filter: drop-shadow(0 0 0.1em var(--text-colour, var(--text-color))); }

dt,
summary { font-weight: bold; }