:root {
  --bg: transparent;
  --color: black;
  --link-color: #525dd7;
  --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: #848DF0;
    --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: 60vw;
  height: calc(100vh - 2rem);
  font-family: "Noto Sans", 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  font-size: 16px;
  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;
  padding-bottom: 1rem;
  border-bottom: 4px dotted var(--theme-btn-border);
}

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;
}

nav .openmoji {
  width: 1.5rem !important;
  height: 1.5rem !important;
}

header > nav > ul a {
  font-size: 1rem;
}

h1 {
    font-size: 2.5rem;
}

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

section {
  width: 100%;
}

/* Index page sidebar layout */
.index-layout {
  display: flex;
  gap: 2rem;
}

.sidebar {
  margin-top: 1rem;
  min-width: 140px;
  max-width: 220px;
  position: sticky;
  top: 1rem;
  align-self: flex-start;
}

.sidebar h2 {
  margin-top: 0.5rem;
  font-size: 1rem;
}

.sidebar ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.sidebar ul li {
  margin-bottom: 0.5rem;
}

.sidebar ul li a {
  font-weight: 600;
  display: block;
}

.sidebar ul li span {
  display: block;
  font-size: 0.8rem;
  opacity: 0.7;
  margin-top: 0.1rem;
}

.index-main {
  flex: 1;
  min-width: 0;
}

p {
  text-align: left;
}

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

a:hover {
  opacity: 0.7;
}

/* Theme toggle button */
#theme-toggle {
  background: none;
  cursor: pointer;
  font-size: 1rem;
  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;
}

/* Season theme buttons (in nav) */
#theme_button_default,
#theme_button_autumn,
#theme_button_winter,
#theme_button_spring,
#theme_button_summer {
  background: none;
  color: var(--theme-btn-color);
  cursor: pointer;
  font-size: 1rem;
  font-family: inherit;
  transition: opacity 100ms linear;
}

#theme_button_default:hover,
#theme_button_autumn:hover,
#theme_button_winter:hover,
#theme_button_spring:hover,
#theme_button_summer:hover {
  opacity: 0.8;
}


/* Hamburger menu - hidden on desktop */
#hamburger {
  display: none;
  background: none;
  border: none;
  font-size: 1.75rem;
  cursor: pointer;
  color: var(--color);
  padding: 1rem;
  margin-left: auto;
}

#nav-close {
  display: none;
  background: none;
  border: none;
  font-size: 1.75rem;
  cursor: pointer;
  color: var(--color);
  align-self: flex-end;
  padding: 1rem;
}

#nav-overlay {
  display: none;
}

/* 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;
        overflow-x: hidden;
    }

    .index-layout {
        flex-direction: column;
        gap: 0;
    }

    .sidebar {
        position: static;
    }
}

@media only screen and (device-width: 960px),
only screen and (max-width:960px) {
    .image_item_expanded_container > .image_item {
        width: 80vw;
    }

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

    body {
      margin-top: 4rem;
    }

    #hamburger {
        display: block;
        position: fixed;
        top: 0.5rem;
        right: 2rem;
        z-index: 1002;
        padding: 0.5rem;
    }

    #nav-close {
        display: block;
    }

    #nav-menu {
        position: fixed;
        top: 0;
        left: 0;
        width: 100vw;
        height: 100vh;
        background: var(--theme-btn-bg, white);
        z-index: 1001;
        padding: 0 10vw;
        margin-top: 0;
        display: flex;
        flex-direction: column;
        transform: translateX(100%);
        transition: transform 0.25s ease;
        box-sizing: border-box;
    }

    #nav-menu.open {
        transform: translateX(0);
    }

    header:has(#nav-menu.open) #hamburger {
        display: none;
    }

    #nav-menu > ul {
        flex-direction: column;
        gap: 0.5rem;
    }

    #nav-menu > ul > li {
        width: 100%;
    }

    #nav-menu > ul > li[style*="margin-left: auto"] {
        margin-left: 0 !important;
        margin-top: 1rem;
    }

    #nav-menu > ul > li[style*="margin-left: 1rem"] {
        margin-left: 0 !important;
    }

    #nav-menu > ul button,
    #nav-menu > ul a {
        width: 100%;
        text-align: center;
    }

    header > nav {
        border-bottom: none;
    }

    #nav-overlay {
        display: none;
    }
}