/*
Copyright © 2022 NianBroken. All rights reserved.
Github：https://github.com/NianBroken/Firework_Simulator
Gitee：https://gitee.com/nianbroken/Firework_Simulator
本项目采用 Apache-2.0 许可证
简而言之，你可以自由使用、修改和分享本项目的代码，但前提是在其衍生作品中必须保留原始许可证和版权信息，并且必须以相同的许可证发布所有修改过的代码。
*/

/* 自定义滚动条样式 */
::-webkit-scrollbar {
	/* 选择整体滚动条 */
	width: 0px; /* 设置滚动条的宽度 */
}

::-webkit-scrollbar-track {
	/* 选择滚动条背景 */
	background: #f1f1f1; /* 设置滚动条背景颜色 */
}

::-webkit-scrollbar-thumb {
	/* 选择滚动条手柄 */
	background: #888; /* 设置滚动条手柄的颜色 */
}

::-webkit-scrollbar-thumb:hover {
	/* 鼠标悬停时选择滚动条手柄 */
	background: #555; /* 设置鼠标悬停时滚动条手柄的颜色 */
}

* {
	position: relative;
	box-sizing: border-box;
}

html,
body {
	height: 100%;
}

html {
	background-color: #000;
}

body {
	overflow: hidden;
	color: rgba(255, 255, 255, 0.5);
	font-family: "Russo One", arial, sans-serif;
	line-height: 1.25;
	letter-spacing: 0.06em;
}

.hide {
	opacity: 0;
	visibility: hidden;
}

.remove {
	display: none !important;
}

.blur {
	filter: blur(12px);
}

.container {
	height: 100%;
	display: flex;
	justify-content: center;
	align-items: center;
}

.loading-init {
	width: 100%;
	align-self: center;
	text-align: center;
	text-transform: uppercase;
}
.loading-init__header {
	font-size: 2.2em;
}
.loading-init__status {
	margin-top: 1em;
	font-size: 0.8em;
	opacity: 0.75;
}

.stage-container {
	overflow: hidden;
	box-sizing: initial;
	border: 1px solid #222;
	margin: -1px;
}
@media (max-width: 840px) {
	.stage-container {
		border: none;
		margin: 0;
	}
}

.canvas-container {
	width: 100%;
	height: 100%;
	transition: filter 0.3s;
}
.canvas-container canvas {
	position: absolute;
	mix-blend-mode: lighten;
	transform: translateZ(0);
}

.controls {
	position: absolute;
	top: 0;
	width: 100%;
	padding-bottom: 50px;
	display: flex;
	justify-content: space-between;
	transition: opacity 0.3s, visibility 0.3s;
}
@media (min-width: 840px) {
	.controls {
		visibility: visible;
	}
	.controls.hide:hover {
		opacity: 1;
	}
}

.menu {
	position: absolute;
	top: 0;
	bottom: 0;
	left: 0;
	right: 0;
	background-color: rgba(0, 0, 0, 0.42);
	transition: opacity 0.3s, visibility 0.3s;
}
.menu__inner-wrap {
	display: flex;
	flex-direction: column;
	justify-content: center;
	align-items: center;
	position: absolute;
	top: 0;
	bottom: 0;
	left: 0;
	right: 0;
	transition: opacity 0.3s;
}
.menu__header {
	margin-top: 5px;
	margin-bottom: 8px;
	font-size: 2em;
	text-transform: uppercase;
}
.menu__subheader {
	margin-bottom: 5px;
	font-size: 0.86em;
	opacity: 0.8;
}
.menu form {
	width: 100%;
	max-width: 400px;
	padding: 0 10px;
	margin-right: 80px;
	overflow: auto;
	-webkit-overflow-scrolling: touch;
}
.menu .form-option {
	display: flex;
	align-items: center;
	margin: 16px 0;
	transition: opacity 0.3s;
}
.menu .form-option label {
	display: block;
	width: 50%;
	padding-right: 12px;
	text-align: right;
	text-transform: uppercase;
	-webkit-user-select: none;
	-moz-user-select: none;
	-ms-user-select: none;
	user-select: none;
}
.menu .form-option--select select {
	display: block;
	width: 50%;
	height: 30px;
	font-size: 1rem;
	font-family: "Russo One", arial, sans-serif;
	color: rgba(255, 255, 255, 0.5);
	letter-spacing: 0.06em;
	background-color: transparent;
	border: 1px solid rgba(255, 255, 255, 0.5);
}
.menu .form-option--select select option {
	background-color: black;
}
.menu .form-option--checkbox input {
	display: block;
	width: 26px;
	height: 26px;
	margin: 0;
	opacity: 0.5;
}
@media (max-width: 840px) {
	.menu .form-option select,
	.menu .form-option input {
		outline: none;
	}
}

.close-menu-btn {
	position: absolute;
	top: 0;
	right: 0;
}
/*This project is copyrighted by NianBroken!*/
.btn {
	opacity: 0.16;
	width: 50px;
	height: 50px;
	display: flex;
	-webkit-user-select: none;
	-moz-user-select: none;
	-ms-user-select: none;
	user-select: none;
	cursor: default;
	transition: opacity 0.3s;
}
.btn--bright {
	opacity: 0.5;
}
@media (min-width: 840px) {
	.btn:hover {
		opacity: 0.32;
	}
	.btn--bright:hover {
		opacity: 0.75;
	}
}
.btn svg {
	display: block;
	margin: auto;
}

.credits {
	margin-top: auto;
	margin-bottom: 10px;
	padding-top: 6px;
	font-size: 0.8em;
	opacity: 0.75;
	text-align: center;
}
.credits a {
	color: rgba(255, 255, 255, 0.5);
	text-decoration: none;
}
.credits a:hover,
.credits a:active {
	color: rgba(255, 255, 255, 0.75);
	text-decoration: underline;
}

.help-modal {
	display: flex;
	justify-content: center;
	align-items: center;
	position: fixed;
	top: 0;
	bottom: 0;
	left: 0;
	right: 0;
	visibility: hidden;
	transition-property: visibility;
	transition-duration: 0.25s;
}
.help-modal__overlay {
	position: absolute;
	top: 0;
	bottom: 0;
	left: 0;
	right: 0;
	opacity: 0;
	transition-property: opacity;
	transition-timing-function: ease-in;
	transition-duration: 0.25s;
}
/*This project is copyrighted by NianBroken!*/
.help-modal__dialog {
	display: flex;
	flex-direction: column;
	align-items: center;
	max-width: 400px;
	max-height: calc(100vh - 100px);
	margin: 10px;
	padding: 20px;
	border-radius: 0.3em;
	background-color: rgba(0, 0, 0, 0.4);
	opacity: 0;
	transform: scale(0.9, 0.9);
	transition-property: opacity, transform;
	transition-timing-function: ease-in;
	transition-duration: 0.25s;
}
@media (min-width: 840px) {
	.help-modal__dialog {
		font-size: 1.25rem;
		max-width: 500px;
	}
}
.help-modal__header {
	font-size: 1.75em;
	text-transform: uppercase;
	text-align: center;
}
.help-modal__body {
	overflow-y: auto;
	-webkit-overflow-scrolling: touch;
	margin: 1em 0;
	padding: 1em 0;
	border-top: 1px solid rgba(255, 255, 255, 0.25);
	border-bottom: 1px solid rgba(255, 255, 255, 0.25);
	line-height: 1.5;
	color: rgba(255, 255, 255, 0.75);
}
.help-modal__close-btn {
	flex-shrink: 0;
	outline: none;
	border: none;
	border-radius: 2px;
	padding: 0.25em 0.75em;
	margin-top: 0.36em;
	font-family: "Russo One", arial, sans-serif;
	font-size: 1em;
	color: rgba(255, 255, 255, 0.5);
	text-transform: uppercase;
	letter-spacing: 0.06em;
	background-color: rgba(255, 255, 255, 0.25);
	transition: color 0.3s, background-color 0.3s;
}
.help-modal__close-btn:hover,
.help-modal__close-btn:active,
.help-modal__close-btn:focus {
	color: #fff;
	background-color: #09f;
}
.help-modal.active {
	visibility: visible;
	transition-duration: 0.4s;
}
.help-modal.active .help-modal__overlay {
	opacity: 1;
	transition-timing-function: ease-out;
	transition-duration: 0.4s;
}
.help-modal.active .help-modal__dialog {
	opacity: 1;
	transform: scale(1, 1);
	transition-timing-function: ease-out;
	transition-duration: 0.4s;
}

/* ===========================
   返回博客按钮提示文字（hover 显示）
=========================== */
.back-blog-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 55px;
    height: 55px;
    border-radius: 50%;
    background: rgba(255,255,255,0.25);
    backdrop-filter: blur(6px);
    color: #fff;
    font-size: 26px;
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10002;
    opacity: 0;
    animation: fadeIn 0.8s ease-out forwards;
    transition: background 0.3s, box-shadow 0.3s, transform 0.3s;
}

/* 悬停发光效果 */
.back-blog-btn:hover {
    background: rgba(255,255,255,0.45);
    box-shadow: 0 0 15px rgba(255,255,255,0.8);
    transform: scale(1.1);
}

/* 提示文字 */
.back-blog-btn::after {
    content: "返回博客";
    position: absolute;
    right: 70px; /* 文字在按钮右侧 */
    white-space: nowrap;
    padding: 6px 12px;
    background: rgba(0,0,0,0.55);
    color: #fff;
    font-size: 14px;
    border-radius: 6px;
    opacity: 0;
    transform: translateX(10px);
    pointer-events: none;
    transition: opacity 0.3s ease, transform 0.3s ease;
}

/* 悬停时显示提示文字 */
.back-blog-btn:hover::after {
    opacity: 1;
    transform: translateX(0);
}

/* 淡入动画 */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* 移动端隐藏提示文字 */
@media (max-width: 768px) {
    .back-blog-btn {
        width: 45px;
        height: 45px;
        font-size: 22px;
        bottom: 20px;
        right: 20px;
    }

    .back-blog-btn::after {
        display: none;
    }
}