/* Color palette: http://paletton.com/#uid=33x0u0klrl-4ON9dhtKtAdqMQ4T */

:root {
  --bg: #010e19;
  --bg-main: #000d;
  --heading: #cb2408cc;
  --bg-heading1: #cb240844;
  --fg-link: #b9cbd8;
  --bg-input: #ccc4;
  --bg-input-hover: #8884;
  --bg-notification: #ac8f3944;
  --bg-error: #f00;
  --fg-error: white;
  --bg-category: #ccc4;
  --bg-input-invalid: #800;
  --fg-input-invalid: white;
  --bg-mothball:  #ccc;
  --bg-debug: #cccc;
  --fg-debug: black;
  --bg-toast: #333;
  --fg-toast: #eee;
  --box-toast: #0b0;
}

@media (prefers-color-scheme: light) {
  /* We uses the alpha channel to apply hue tinting to elements, to get a
   * similar effect in light or dark mode. That means there aren't a whole lot of
   * things to change between light and dark mode.
   */
   :root {
    --bg: #b9cbd8;
    --fg: black;
    --bg-main: #fffd;
    --fg-link: #092b45;
  }
}

body {
  font-family: sans-serif;
  background: var(--bg) url("bg.png") center fixed;
  background-size: cover;
  background-blend-mode: soft-light;
  background-color: var(--bg);
  color: var(--fg);
}
canvas.wallpaper {
  position: fixed;
  display: block;
  z-index: -1000;
  top: 0;
  left: 0;
  height: 100vh;
  width: 100vw;
  opacity: 0.2;
  image-rendering: pixelated;
}
main {
  max-width: 40em;
  margin: 1em auto;
  padding: 1px 3px;
  border-radius: 5px;
  background: var(--bg-main);
}
h1, h2, h3, h4, h5, h6 {
  color: var(--heading);
}
h1 {
  background: var(--bg-heading1);
  padding: 3px;
}
p {
	margin: 1em 0em;
}
a:any-link {
	color: var(--fg-link);
}
form, pre {
	margin: 1em;
  overflow-x: auto;
}
input, select {
	padding: 0.6em;
	margin: 0.2em;
	max-width: 30em;
}
input {
  background-color: var(--bg-input);
  color: inherit;
}
input:hover {
  background-color: var(--bg-input-hover);
}
input:active {
  background-color: inherit;
}
.notification, .error {
  padding: 0 1em;
  border-radius: 8px;
}
.notification {
	background: var(--bg-notification);
}
.error {
  background: var(--bg-error);
  color: var(--fg-error);
}
.hidden {
  display: none;
}

/** Puzzles list */
.category {
  margin: 5px 0;
  background: var(--bg-category);
}
.category h2 {
  margin: 0 0.2em;
}
.category .solved {
  text-decoration: line-through;
}
nav ul, .category ul {
  margin: 0;
  padding: 0.2em 1em;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
}
nav li, .category li {
	display: inline;
}
.category li.entitled {
  flex-basis: 100%;
}
.mothball {
  float: right;
  text-decoration: none;
  border-radius: 5px;
  background: var(--bg-mothball);
  padding: 4px 8px;
  margin: 5px;
}

/** Puzzle content */
#puzzle {
  border-bottom: solid;
  padding: 0 0.5em;
}
#puzzle img {
  max-width: 100%;
}
input:invalid {
  background-color: var(--bg-input-invalid);
  color: var(--fg-input-invalid);
}
.answer_ok {
  cursor: help;
}

/** Development mode information */
.debug {
  overflow: auto;
  padding: 1em;
  border-radius: 10px;
  margin: 2em auto;
  background: var(--bg-debug);
  color: var(--fg-debug);
}
.debug dt {
  font-weight: bold;
}

/** Draggable items, from the draggable plugin */
li[draggable]::before {
  content: "↕";
  padding: 0.5em;
  cursor: move;
}
li[draggable] {
  list-style: none;
}

[draggable].moving {
  opacity: 0.4;
}

[draggable].over {
  border: 1px white dashed;
}





/** Toasts are little pop-up informational messages. */
 .toasts {
  position: fixed;
  z-index: 100;
  bottom: 10px;
  left: 10px;
  text-align: center;
  width: calc(100% - 20px);
  display: flex;
  flex-direction: column;
}
.toast {
  border-radius: 0.5em;
  padding:  0.2em 2em;
  animation: fadeIn ease 1s;
  margin: 2px auto;
  background: var(--bg-toast);
  color: var(--fg-toast);
  box-shadow: 0px 0px 8px 0px var(--box-toast);
}
@keyframes fadeIn {
  0% { opacity: 0; }
  100% { opacity: 1; }
}