/* 基礎設定：消除瀏覽器預設間距 */
* {
	margin: 0;
	padding: 0;
	box-sizing: border-box;
}

html {
	scroll-behavior: smooth;
}

body {
	background-color: #2D2A2E;
	font-family: "Segoe UI", "PingFang TC", "Microsoft YaHei", sans-serif;
	
	/* 讓頁面填滿視窗，並以垂直方向排列內容 */
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	min-height: 100vh;
}

main {
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	gap: 30px; /* 元素之間的間隔 */
	width: 100%;
	padding: 20px;
	animation: fadeIn 0.6s ease;
}

@keyframes fadeIn {
	from {
		opacity: 0;
		transform: translateY(15px);
	}
	to {
		opacity: 1;
		transform: translateY(0);
	}
}

.big-title {
	color: #A9DC76;
	text-shadow: 0 0 10px rgba(169, 220, 118, 0.5);
	text-align: center;
	font-size: clamp(2rem, 5vw, 3rem);
}

.youtube-btn {
	color: #2D2A2E;
	background-color: #FFD866;
	padding: 12px 24px;
	text-decoration: none;
	border-radius: 8px;
	font-weight: bold;
	box-shadow: 0 0 15px rgba(255, 216, 102, 0.4);
	transition: transform 0.2s, box-shadow 0.2s;
}

.youtube-btn:hover {
	transform: scale(1.05);
	box-shadow: 0 0 25px rgba(255, 216, 102, 0.6);
}

.youtube-btn:active {
	transform: scale(0.95) translateY(2px);
}

.social-btns {
	position: fixed;
	bottom: 50px;
	left: 50%;
	transform: translateX(-50%);
	display: flex;
	justify-content: center;
	gap: 20px;
}

.social-btn img {
	width: 50px;
	height: 50px;
	display: block;
	filter: drop-shadow(0 0 8px rgba(255, 255, 255, 0.6));
	transition: filter 0.2s, transform 0.2s;
}

.social-btn:hover img {
	transform: scale(1.1);
	filter: drop-shadow(0 0 16px rgba(255, 255, 255, 0.9));
}

.social-btn:active img {
	transform: scale(0.95) translateY(2px);
}