:root {
  --bg: transparent;
  --color: black;
  --link-color: darkviolet;
  --image-border: rgba(0, 0, 0, 0.3);
  --image-border-hover: rgba(0, 0, 0, 0.7);
  --image-overlay: rgba(0, 0, 0, 0.7);
  --theme-btn-bg: white;
  --theme-btn-border: gray;
  --theme-btn-color: black;
  --input-focus-border: lightgray;
  --action-button-border: #f0f0f0;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: rgba(13, 17, 23, 0.92);
    --color: #e6edf3;
    --link-color: #b083f0;
    --image-border: rgba(255, 255, 255, 0.2);
    --image-border-hover: rgba(255, 255, 255, 0.5);
    --image-overlay: rgba(0, 0, 0, 0.85);
    --theme-btn-bg: #21262d;
    --theme-btn-border: #444c56;
    --theme-btn-color: #e6edf3;
    --input-focus-border: #586069;
    --action-button-border: #30363d;
  }
}

[data-theme="dark"] {
  --bg: rgba(13, 17, 23, 0.92);
  --color: #e6edf3;
  --link-color: #b083f0;
  --image-border: rgba(255, 255, 255, 0.2);
  --image-border-hover: rgba(255, 255, 255, 0.5);
  --image-overlay: rgba(0, 0, 0, 0.85);
  --theme-btn-bg: #21262d;
  --theme-btn-border: #444c56;
  --theme-btn-color: #e6edf3;
  --input-focus-border: #586069;
  --action-button-border: #30363d;
}

body {
  width: 50vw;
  height: calc(100vh - 2rem);
  font-family: "Noto Sans", 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  font-size: 14px;
  background-color: var(--bg);
  color: var(--color);
  padding: 0;
  margin: auto;
}

header {
  width: 100%;
}

header > h1 {
	font-weight: bold;
  font-size: 2rem;
  padding-top: 1rem;
	padding-bottom: 0.5rem;
  margin: 0;
}

header > nav {
  margin-top: 1rem;
  margin-bottom: 1rem;
  padding-left: 0.25rem;
}

header > nav > ul {
  display: flex;
  flex-direction: row;
  list-style-type: none;
  margin: 0;
  padding: 0;
  gap: 1rem;
}

header > nav > ul > li {
  display: flex;
  align-items: center;
}

header > nav > ul a {
  text-decoration: none;
  color: var(--link-color);
  font-size: 1rem;
	border-bottom: 1px solid transparent;
}

header > nav > ul a:hover {
	opacity: 0.8;
	text-decoration: underline;
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 1.5rem;
    margin-bottom: 0rem;
    margin-top: 2rem;
}

section {
  width: 100%;
}

p {
  text-align: left;
}

a {
  color: var(--link-color);
}

a:hover {
  opacity: 0.7;
}

/* Theme toggle button */
#theme-toggle {
  background: none;
  border: 1px solid var(--theme-btn-border);
  color: var(--link-color);
  border-radius: 3px;
  padding: 0.1rem 0.5rem;
  cursor: pointer;
  font-size: 0.85rem;
  font-family: inherit;
}

#theme-toggle:hover {
  opacity: 0.8;
}

/* Image styling */
#image_container {
  display: flex;
  flex-direction: row;
  transition: transform 100ms ease-in-out;
	flex: 0 1 auto;
	width: 100%;
	overflow: auto;
}

#image_container .image_item {
  width: 240px;
  transition: opacity 100ms ease-in-out;
  padding: 0;
  margin: 0;
  padding-right: 12px;
  cursor: pointer;
  position: relative;
}

#image_container .image_item:hover > img {
	border: 2px solid var(--image-border-hover);
}

.image_item > figcaption {
  font-size: 10px;
  font-style: italic;
}

.image_item > img {
  width: inherit;
  border-radius: 3px;
	border: 2px solid var(--image-border);
}

.image_item_expanded_container {
    position: fixed;
    width: 100vw;
    height: 100vh;
    background-color: var(--image-overlay);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.image_item_expanded_container > .image_item {
    width: 35vw;
    opacity: 1.0 !important;
}

input {
    outline: none;
    border: 1px solid transparent;
    border-radius: 2px;
    font-size: 1rem;
    padding: 0.5rem;
}

input:focus {
    border: 1px solid var(--input-focus-border);
}

.action_button {
    border: 1px solid var(--action-button-border);
    border-radius: 2px;
    width: 108px;
    height: 2rem;
}

.action_button:hover {
    cursor: pointer;
    opacity: 0.9;
}

/* Theme display */
#theme_container {
	position: fixed;
	top: 0;
	left: 0;
	width: 100vw;
	height: 100vh;
	background-color: transparent;
	z-index: -1;
}

#theme_canvas {
	width: 100%;
	height: 100%;
	z-index: -1;
}

/* Theme Selector */
#theme_section {
  position: fixed;
  bottom: 1rem;
  left: 0;
  width: 100%;
  text-align: center;
}

#theme_selector {
	display: flex;
	align-items: center;
	justify-content: center;
	bottom: 1rem;
  pointer-events: all;
  opacity: 1;
  transition: opacity 150ms linear;
	gap: 2rem;
}

#theme_selector.hidden {
    pointer-events: none;
    opacity: 0;
}

#theme_selector > button {
	width: 6rem;
	height: 2rem;
	border-radius: 3px;
	border: 1px solid var(--theme-btn-border);
	color: var(--theme-btn-color);
	background-color: var(--theme-btn-bg);
	cursor: pointer;
	transition: opacity 100ms linear;
}

#theme_selector > button:hover {
	opacity: 0.8;
}

#theme_selector > #theme_button_default {
}

#theme_selector > #theme_button_autumn {
	background-color: orange;
}

#theme_selector > #theme_button_winter {
	background-color: #79C0D7;
}

#theme_selector > #theme_button_spring {
	background-color: #00FF7F;
}

#theme_selector > #theme_button_summer {
  background-color: yellow;
}

.theme_button_text {
  margin-left: 0.5rem;
}

/* Phone screen adjustments */
@media only screen and (device-width: 1280px),
only screen and (max-width:1280px) {
    header > h1 {
        font-size: 1.5rem;
    }

    body {
        width: 80vw !important;
    }
}

@media only screen and (device-width: 960px),
only screen and (max-width:960px) {
    #theme_selector {
      margin-left: 1rem;
      margin-right: 1rem;
    }
    .theme_button_text {
      display: none;
    }

    #theme_selector > button {
      width: 100%;
    }

    .image_item_expanded_container > .image_item {
        width: 80vw;
    }

    #carousel > button {
        font-size: 6rem;
        top: calc(50% - 4rem);
    }
}