:root {
    --background-color-light: #f4f4f4;
    --secondary-color-light: #ffffff;
    --text-color-light: #333;
    --background-color-dark: #222;
    --secondary-color-dark: #333;
    --text-color-dark: #f4f4f4;
    --border-color-light: #ccc;
    --border-color-dark: #555;
    --hover-color-light: #eee;
    --hover-color-dark: #444;
    --shadow-color-light: rgba(0,0,0,0.1);
    --shadow-color-dark: rgba(0,0,0,0.4);
    --link-color-light: #007BFF;
    --link-color-dark: #00BFFF;
    --btn-background-color: #ffffff;
    --btn-text-color: #333333;
    --btn-border-color: #cccccc;
    --btn-hover-background-color: #f4f4f4;
    --btn-hover-border-color: #bbbbbb;
    --btn-primary-bg: transparent;
    --btn-primary-text: #0b57d0; /* A nice, modern blue for light mode */
    --btn-primary-border: #747775; /* A subtle gray border */
    --btn-primary-hover-bg: #f0f4fd; /* A very light blue wash on hover */
}

:root {
    --background-color: var(--background-color-light);
    --secondary-color: var(--secondary-color-light);
    --text-color: var(--text-color-light);
    --border-color: var(--border-color-light);
    --hover-color: var(--hover-color-light);
    --shadow-color: var(--shadow-color-light);
    --link-color: var(--link-color-light);
    color-scheme: light;
}

:root[data-theme="dark"] {
    --background-color: var(--background-color-dark);
    --secondary-color: var(--secondary-color-dark);
    --text-color: var(--text-color-dark);
    --border-color: var(--border-color-dark);
    --hover-color: var(--hover-color-dark);
    --shadow-color: var(--shadow-color-dark);
    --link-color: var(--link-color-dark);
    --btn-background-color: #1a1a1a;
    --btn-text-color: #e0e0e0;
    --btn-border-color: #888888;
    --btn-hover-background-color: #333333;
    --btn-hover-border-color: #aaaaaa;
    --btn-primary-bg: transparent;
    --btn-primary-text: #a8c7fa; /* A bright, accessible blue for dark mode */
    --btn-primary-border: #8e918f; /* The "silver" outline */
    --btn-primary-hover-bg: rgba(168, 199, 250, 0.1); /* A light blue wash on hover */
    color-scheme: dark;
}

html {
    scroll-behavior: smooth;
}

html.no-fouc {
  visibility: hidden;
  opacity: 0;
}

html:not(.no-fouc) {
  visibility: visible;
  opacity: 1;
  transition: opacity 0.1s ease-in;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
    margin: 0;
    padding-top: 70px;
    background-color: var(--background-color);
    color: var(--text-color);
    transition: background-color 0.3s ease, color 0.3s ease;
    display: flex;
    flex-direction: column;
}

main {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

a {
    color: var(--link-color);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
}

.title-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.8rem 1.5rem;
    background-color: var(--secondary-color);
    border-bottom: 1px solid var(--border-color);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    box-shadow: 0 2px 5px var(--shadow-color);
    height: 70px;
    box-sizing: border-box;
}

.logo-link {
    text-decoration: none;
    color: inherit;
    display: inline-block;
}

.logo-container {
    display: flex;
    align-items: center;
}

.logo-image {
    max-height: 40px;
    width: auto;
    display: block;
}

.back-arrow-icon {
    display: inline-block;
    width: 0;
    height: 20px;
    margin-right: 0;
    opacity: 0;
    visibility: hidden;
    transform: translateX(-10px);
    transition: opacity 0.3s ease, visibility 0s linear 0.3s, transform 0.3s ease, width 0.3s ease, margin-right 0.3s ease;
    position: relative;
    pointer-events: none;
    overflow: hidden;
}

.back-arrow-icon::before {
    content: '';
    position: absolute;
    left: 6px;
    top: 50%;
    width: 12px;
    height: 2px;
    background-color: currentColor;
    transform: translateY(-50%);
}

.back-arrow-icon::after {
    content: '';
    position: absolute;
    left: 6px;
    top: 50%;
    width: 8px;
    height: 8px;
    border-top: 2px solid currentColor;
    border-left: 2px solid currentColor;
    transform: translateY(-50%) rotate(-45deg);
}

.logo-container.show-back-arrow .back-arrow-icon {
    width: 20px;
    margin-right: 8px;
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
    pointer-events: auto;
    transition-delay: 0s, 0s, 0s, 0s, 0s;
}

.top-right-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

#user-menu-container {
    position: relative;
}

.user-avatar-trigger {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid var(--border-color);
    cursor: pointer;
    transition: border-color 0.2s ease;
}

.user-avatar-trigger:hover, .user-avatar-trigger:focus {
    border-color: var(--link-color);
    outline: none;
}

.dropdown-menu {
    display: none;
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    background-color: var(--secondary-color);
    box-shadow: 0 4px 12px var(--shadow-color);
    border-radius: 8px;
    z-index: 1000;
    overflow: hidden;
    border: 1px solid var(--border-color);
    min-width: 240px;
}

.dropdown-menu.show {
    display: block;
}

.dropdown-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.dropdown-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
}

.dropdown-username {
    font-weight: bold;
    font-size: 1.1em;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.menu-item {
    padding: 0.8rem 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    font-weight: bold;
}

.menu-item span {
    margin-right: 1rem;
}

.submenu {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.submenu-item {
    cursor: pointer;
    padding: 0.6rem 1rem;
    border-radius: 3px;
    text-align: right;
    position: relative;
    padding-right: 25px;
}

.submenu-item:hover {
    background-color: var(--hover-color);
}

.submenu-item.selected::before {
    content: '✔';
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--link-color);
    font-weight: bold;
}

.menu-item-action {
    padding: 0.75rem;
    border-top: 1px solid var(--border-color);
}

.btn {
	display: inline-block;
	padding: 0.8rem 1.8rem;
	margin: 0.5rem;
	background-color: var(--btn-background-color);
	color: var(--btn-text-color);
	text-decoration: none;
	border-radius: 5px;
	transition: background-color 0.2s ease, transform 0.1s ease, border-color 0.2s ease;
	font-weight: bold;
    border: 1px solid var(--btn-border-color);
    cursor: pointer;
}

.btn:hover {
	background-color: var(--btn-hover-background-color);
    border-color: var(--btn-hover-border-color);
    transform: translateY(-2px);
    color: var(--btn-text-color); /* Ensure text color doesn't change on hover */
    text-decoration: none;
}

.btn-logout {
    width: 100%;
    padding: 0.7rem;
    background-color: var(--btn-background-color);
    color: var(--btn-text-color);
    border: 1px solid var(--btn-border-color);
    border-radius: 5px;
    cursor: pointer;
    font-weight: bold;
    transition: background-color 0.2s, color 0.2s, border-color 0.2s;
}

.btn-logout:hover {
    background-color: #e53e3e;
    border-color: #e53e3e;
    color: white;
}

#show-login-modal-btn {
    background-color: var(--btn-primary-bg);
    color: var(--btn-primary-text);
    border: 1px solid var(--btn-primary-border);
    border-radius: 100px; /* Fully rounded "pill" shape, very modern */
    font-weight: 500; /* Medium weight is common for this style */
    font-family: "Google Sans", Roboto, Arial, sans-serif; /* Use Google's font if available */
    padding: 0.5rem 1.5rem;
    transition: background-color 0.2s, transform 0.1s;
}

#show-login-modal-btn:hover {
    background-color: var(--btn-primary-hover-bg);
    transform: translateY(-1px); /* A more subtle lift */
    box-shadow: 0 1px 2px 0 rgba(0,0,0,0.1);
}

#logged-out-settings-menu {
    position: relative; /* Required for dropdown positioning */
}

.kebab-menu-trigger {
    width: 40px;
    height: 40px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    border-radius: 50%;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.kebab-menu-trigger:hover, .kebab-menu-trigger:focus {
    background-color: var(--hover-color);
    outline: none;
}

.kebab-menu-trigger span {
    width: 4px;
    height: 4px;
    background-color: var(--text-color);
    border-radius: 50%;
    display: block;
}

/* Position the logged-out dropdown correctly */
#theme-dropdown-menu {
    min-width: 180px; /* Make it a bit smaller than the user menu */
}

.content-section {
    display: none;
    padding: 1rem;
    animation: fadeIn 0.5s ease-in-out;
}

.content-section.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.home-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1.5rem;
    padding-top: 2rem;
}

.topic {
    background-color: var(--secondary-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    text-align: center;
    box-shadow: 0 2px 4px var(--shadow-color);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    flex: 1 1 calc(45% - 1.5rem);
    max-width: 500px;
    min-width: 250px;
    cursor: pointer;
    text-decoration: none;
    color: var(--text-color);
    display: flex;
    flex-direction: column;
}

.topic:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 12px var(--shadow-color);
}

.topic-title {
    padding: 1rem;
    font-weight: bold;
    border-top: 1px solid var(--border-color);
}

.gallery {
    position: relative;
    width: 100%;
    height: 0;
    padding-top: 56.25%;
    overflow: hidden;
    background-color: #36393f;
}

.gallery img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    opacity: 0;
    transition: opacity 1s ease-in-out;
}

.gallery img.active {
    opacity: 1;
}

.buttons {
    text-align: center;
    margin: 2rem 0;
}

.btn {
	display: inline-block;
	padding: 0.8rem 1.8rem;
	margin: 0.5rem;
	background-color: var(--link-color);
	color: #fff;
	text-decoration: none;
	border-radius: 5px;
	transition: background-color 0.2s ease, transform 0.1s ease;
	font-weight: bold;
    border: none;
    cursor: pointer;
}

.btn:hover {
	background-color: hsl(from var(--link-color) h s l / 0.8);
    transform: translateY(-2px);
    color: #fff;
    text-decoration: none;
}
.btn:active {
    transform: translateY(0px);
}

.btn.btn-primary {
    padding: 0.6rem 1.2rem;
    font-size: 0.9em;
}

.instructions {
    margin-top: 2rem;
    background-color: var(--secondary-color);
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    box-shadow: 0 1px 3px var(--shadow-color);
}
.instructions h2, .instructions h3 {
    margin-top: 0;
    margin-bottom: 1rem;
}
.instructions ol {
    padding-left: 20px;
}
.instructions li {
    margin-bottom: 0.8rem;
}

.copy-container {
    display: flex;
    align-items: center;
    margin: 0.5rem 0 1rem 0;
    max-width: 450px;
}

.copy-container input[type="text"] {
    flex-grow: 1;
    padding: 0.6rem;
    border: 1px solid var(--border-color);
    border-radius: 5px 0 0 5px;
    font-size: 1rem;
    background-color: var(--background-color);
    color: var(--text-color);
}

.copy-container button {
    padding: 0.6rem 1rem;
    background-color: var(--btn-background-color);
    color: var(--btn-text-color);
    border: 1px solid var(--btn-border-color);
    border-left: none;
    border-radius: 0 5px 5px 0;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.2s, border-color 0.2s;
    white-space: nowrap;
}

.copy-container button:hover {
    background-color: var(--btn-hover-background-color);
    border-color: var(--btn-hover-border-color);
}

.copy-alert {
    visibility: hidden;
    opacity: 0;
    margin-left: 1rem;
    color: #28a745;
    font-weight: bold;
    transition: opacity 0.5s ease, visibility 0s linear 0.5s;
}
:root[data-theme="dark"] .copy-alert {
    color: #34d399;
}

.copy-alert.show {
    visibility: visible;
    opacity: 1;
    transition: opacity 0.3s ease, visibility 0s linear 0s;
}

.discord-embed, .server-info, .screenshots-gallery {
    text-align: center;
    margin: 2rem 0;
}

.screenshots-gallery h2 {
    margin-bottom: 1.5rem;
}
.image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}
.gallery-image {
    width: 100%;
    height: auto;
    border-radius: 5px;
    box-shadow: 0 2px 4px var(--shadow-color);
    object-fit: contain;
}

.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0,0,0,0.6);
    padding-top: 60px;
}

.modal-content {
    background-color: var(--secondary-color);
    color: var(--text-color);
    margin: 5% auto;
    padding: 25px;
    border: 1px solid var(--border-color);
    width: 80%;
    max-width: 400px;
    border-radius: 8px;
    position: relative;
    box-shadow: 0 4px 8px 0 rgba(0,0,0,0.2),0 6px 20px 0 rgba(0,0,0,0.19);
    text-align: center;
}

.close-modal-btn {
    color: var(--text-color);
    position: absolute;
    top: 10px;
    right: 20px;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
}

.close-modal-btn:hover, .close-modal-btn:focus {
    color: #ff0000;
    text-decoration: none;
}

.modal-login-options {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-top: 20px;
}

.local-scores-container {
    border: 1px solid var(--border-color);
    box-shadow: 0 1px 3px var(--shadow-color);
}

.local-scores-container h2 {
    margin-top: 0;
    margin-bottom: 0.5rem;
}

#local-scores-list li {
    margin-bottom: 0.3rem;
    font-size: 0.95rem;
}

#local-scores-list span {
    font-weight: bold;
    color: var(--link-color);
    min-width: 40px;
    display: inline-block;
}

.game-container {
    background-color: var(--secondary-color);
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    box-shadow: 0 1px 3px var(--shadow-color);
    display: flex;
    flex-direction: column;
}

.game-container h2 {
    margin-top: 0;
    text-align: center;
    margin-bottom: 1.5rem;
}

.game-container button {
    padding: 0.6rem 1.2rem;
    margin-top: auto;
    background-color: var(--link-color);
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.2s;
}

.game-container button:hover {
    background-color: hsl(from var(--link-color) h s l / 0.8);
}

.game-container button:disabled {
    background-color: #ccc;
    cursor: not-allowed;
}
:root[data-theme="dark"] .game-container button:disabled {
    background-color: #555;
}

#reaction-box {
    transition: background-color 0.1s ease;
}

#typing-input:disabled {
     background-color: var(--hover-color);
     cursor: not-allowed;
}

#rhythm-beat-marker.beat {
    animation: beat-pulse 0.5s ease-out;
}
#rhythm-hit-marker.hit {
    opacity: 1;
    animation: hit-fade 0.3s ease-out forwards;
}

@keyframes beat-pulse {
    0% { transform: translateX(-50%) scale(1); background-color: #555; }
    50% { transform: translateX(-50%) scale(1.1); background-color: var(--text-color); }
    100% { transform: translateX(-50%) scale(1); background-color: #555; }
}

@keyframes hit-fade {
    0% { opacity: 1; transform: translateX(-50%) scale(1); }
    100% { opacity: 0; transform: translateX(-50%) scale(1.2); }
}

.spacetime-embed-container {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    width: 100%;
    max-width: none;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    background-color: var(--background-color);
}

#spacetime-game-embed {
  width: 100%;
  height: 80vh;
  max-width: 100%;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  display: block;
  margin: 0 auto;
}

.spacetime-embed-container h2,
.spacetime-embed-container h3 {
    text-align: center;
    margin: 0;
    padding: 0.5rem 1rem;
    flex-shrink: 0;
}

.map-fullscreen-button {
    position: absolute;
    top: 50px;
    right: 10px;
    z-index: 10;
    width: 36px;
    height: 36px;
    padding: 0;
    border: none;
    background-color: rgba(0, 0, 0, 0.5);
    color: white;
    cursor: pointer;
    border-radius: 4px;
    transition: background-color 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.map-fullscreen-button:hover {
    background-color: rgba(0, 0, 0, 0.7);
}

.map-fullscreen-button:focus {
    outline: 2px solid var(--link-color);
    outline-offset: 2px;
}

.map-fullscreen-button::before,
.map-fullscreen-button::after {
    content: '';
    position: absolute;
    width: 40%;
    height: 40%;
    border-style: solid;
    border-color: currentColor;
    border-width: 0;
    box-sizing: border-box;
    transition: transform 0.2s ease;
}

.map-fullscreen-button::before {
    top: 15%;
    left: 15%;
    border-top-width: 2px;
    border-left-width: 2px;
    transform-origin: top left;
}

.map-fullscreen-button::after {
    bottom: 15%;
    right: 15%;
    border-bottom-width: 2px;
    border-right-width: 2px;
    transform-origin: bottom right;
}

.map-fullscreen-button.is-fullscreen::before {
    transform: scale(0.7) translate(15%, 15%);
    border-top-width: 0;
    border-left-width: 0;
    border-bottom-width: 2px;
    border-right-width: 2px;
}

.map-fullscreen-button.is-fullscreen::after {
    transform: scale(0.7) translate(-15%, -15%);
    border-bottom-width: 0;
    border-right-width: 0;
    border-top-width: 2px;
    border-left-width: 2px;
}

:root[data-theme="dark"] .map-fullscreen-button {
    background-color: rgba(255, 255, 255, 0.2);
}
:root[data-theme="dark"] .map-fullscreen-button:hover {
    background-color: rgba(255, 255, 255, 0.4);
}

.gsi-material-button {
  -moz-user-select: none;
  -webkit-user-select: none;
  -ms-user-select: none;
  user-select: none;
  -webkit-appearance: none;
  appearance: none;
  background-color: WHITE;
  background-image: none;
  border: 1px solid #747775;
  border-radius: 4px;
  box-sizing: border-box;
  color: #1f1f1f;
  cursor: pointer;
  font-family: 'Roboto', arial, sans-serif;
  font-size: 14px;
  height: 40px;
  letter-spacing: 0.25px;
  outline: none;
  overflow: hidden;
  padding: 0 12px;
  position: relative;
  text-align: center;
  transition: background-color .218s, border-color .218s, box-shadow .218s;
  vertical-align: middle;
  white-space: nowrap;
  width: auto;
  max-width: 400px;
  min-width: min-content;
}

.gsi-material-button .gsi-material-button-icon {
  height: 20px;
  margin-right: 12px;
  min-width: 20px;
  width: 20px;
}

.gsi-material-button .gsi-material-button-content-wrapper {
  align-items: center;
  display: flex;
  flex-direction: row;
  flex-wrap: nowrap;
  height: 100%;
  justify-content: space-between;
  position: relative;
  width: 100%;
}

.gsi-material-button .gsi-material-button-contents {
  flex-grow: 1;
  font-family: 'Roboto', arial, sans-serif;
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  vertical-align: top;
}

.gsi-material-button .gsi-material-button-state {
  transition: opacity .218s;
  bottom: 0;
  left: 0;
  opacity: 0;
  position: absolute;
  right: 0;
  top: 0;
}

.gsi-material-button:disabled {
  cursor: default;
  background-color: #ffffff61;
  border-color: #1f1f1f1f;
}

.gsi-material-button:disabled .gsi-material-button-contents,
.gsi-material-button:disabled .gsi-material-button-icon {
  opacity: 38%;
}

.gsi-material-button:not(:disabled):active .gsi-material-button-state, 
.gsi-material-button:not(:disabled):focus .gsi-material-button-state {
  background-color: #303030;
  opacity: 12%;
}

.gsi-material-button:not(:disabled):hover {
  box-shadow: 0 1px 2px 0 rgba(60, 64, 67, .30), 0 1px 3px 1px rgba(60, 64, 67, .15);
}

.gsi-material-button:not(:disabled):hover .gsi-material-button-state {
  background-color: #303030;
  opacity: 8%;
}

.discord-login-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background-color: #5865F2;
    color: #fff;
    font-weight: bold;
    font-size: 1.1rem;
    padding: 0.8rem 2rem;
    border-radius: 6px;
    text-decoration: none;
    border: none;
    box-shadow: 0 2px 6px rgba(0,0,0,0.08);
    transition: background 0.2s, box-shadow 0.2s, transform 0.1s;
    cursor: pointer;
    gap: 0.8em;
}
.discord-login-btn:hover,
.discord-login-btn:focus {
    background-color: #4752c4;
    text-decoration: none;
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.12);
}
.discord-login-icon {
    font-size: 1.6em;
    display: flex;
    align-items: center;
    margin-right: 0.7em;
}

@media (max-width: 768px) {
    .title-bar {
        padding: 0.5rem 1rem;
        height: 60px;
    }
    body {
        padding-top: 60px;
    }
    .home-container .topic {
        flex-basis: calc(100% - 1.5rem);
        max-width: 90%;
    }
    .container {
        padding: 0.5rem;
    }
    .copy-container {
        max-width: 100%;
    }
    .spacetime-embed-container {
        padding: 1rem 0.5rem;
    }
}

@media (max-width: 480px) {
    .btn {
        padding: 0.7rem 1.2rem;
        font-size: 0.9rem;
    }
    .instructions ol {
        padding-left: 15px;
    }
    h1 {
        font-size: 1.8rem;
    }
    h2 {
        font-size: 1.4rem;
    }
}

@media (min-width: 992px) {
    .home-container .topic {
        flex-basis: calc(33.333% - 1.5rem);
        max-width: calc(33.333% - 1.5rem);
    }
}
/* Styles for fullscreen dev game page */
#dev-game {
    /* Override any default padding/container styles */
    padding: 0;
    margin: 0;
    width: 100%;
    height: 100vh; /* Full viewport height */
    overflow: hidden; /* Hide scrollbars on the host page */
    background-color: #000; /* Black background */
}

#dev-game-iframe {
    border: none;
    width: 100%;
    height: 100%;
    display: block;
}