@font-face {
  font-family: 'ChiayiFont';
  src: url('../fonts/ChiayiCity.woff2') format('woff2'),
       url('../fonts/ChiayiCity.ttf') format('truetype');
  font-weight: normal;
  font-style: normal;
}

/* ===== Scrollbar 滾動條樣式 ===== */
::-webkit-scrollbar {
    width: 5px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background-color: #7F7F7F;
}
::-webkit-scrollbar-thumb:hover {
    background: #3D3D3D;
}

/* ===== 基本設定 ===== */
body {
    position: fixed;
    font-family: 'ChiayiFont', sans-serif;
    overflow-x: hidden;
    margin: 0;
    padding: 0;
    background-color: #000000;
    color: #333;
}

/* ===== 頁面載入 Logo 淡出動畫區塊 ===== */
#logo {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #000000;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 1;
    transition: opacity 1s ease;
}
#logo.fade-out {
    opacity: 0;
}
#logo img {
    width: 175px;
    height: auto;
}

/* ===== Header 區塊 ===== */
header {
    position: fixed;
    width: 100%;
    height: 80px;
    background-color: rgba(0, 0, 0, 1);
    transition: background-color 0.5s ease;
    color: #fff;
    z-index: 3;
}

/* 標題左側圖示 */
#title-image {
    position: absolute;
    top: 50%;
    left: 30px;
    transform: translateY(-50%);
    cursor: pointer;
    z-index: 4;
}
#title-image img {
    width: 55px;
    height: auto;
}

/* 標題文字與下載按鈕 */
#main-title {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 5em;
    letter-spacing: 25px;
    font-weight: 1000;
    z-index: 2;
}
/*
#sub-title {
    position: absolute;
    top: 42%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #C8C8C8;
    font-size: 1.2em;
    font-weight: 1000;
    z-index: 2;
}*/
#download-button {
    position: absolute;
    top: 50%;
    right: 30px;
    transform: translateY(-50%);
    padding: 10px 20px;
    background-color: #0065D0;
    color: #FFFFFF;
    border: none;
    border-radius: 15px;
    cursor: pointer;
    font-size: 0.8em;
    font-weight: 800;
    z-index: 4;
    transition: background-color 0.5s ease, color 0.5s ease;
}
#download-button:hover {
    background-color: #FFFFFF;
    color: #0065D0;
}

/* ===== 封面影片區 ===== */
.video-container {
    display: none;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    position: relative;
}
video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 1;
}

/* ===== 導覽列 ===== */
nav {
    position: relative;
    width: 100%;
    height: 100%;
    background-color: transparent;
    backdrop-filter: blur(10px);
    z-index: 2;
    display: flex;
    justify-content: center;
    align-items: center;
}
nav ul {
    list-style-type: none;
    padding: 0;
}
nav ul li {
    display: inline;
    margin: 0 15px;
}
nav ul li a {
    color: #fff;
    text-decoration: none;
    font-size: 0.8em;
    font-weight: 800;
    padding: 5px 10px;
    border-radius: 5px;
}

/* ===== 各段內容區 ===== */
section {
    padding: 20px;
    margin: 20px 50px;
    border-radius: 25px;
}

/* 動畫進場標題與段落 */
h2, p {
    display: none;
    opacity: 0;
    transform: translateY(80px);
    transition: opacity 1.5s ease, transform 1.5s ease;
}
h2 {
    color: #FFFFFF;
    font-size: 3.5em;
    letter-spacing: 9px;
    font-weight: 1000;
}
p {
    color: #BFBFBF;
    font-weight: 700;
    letter-spacing: 7px;
    font-family: 'Tagesschrift', 'LXGW WenKai TC', sans-serif;
}
h2.visible, p.visible {
    opacity: 1;
    transform: translateY(0);
    display: block;
}

/* 了解更多連結樣式 */
.hidden {
    display: none;
}
.link-style {
    right: 65px;
    width: 150px;
    background-color: transparent;
    cursor: pointer;
    float: right;
}
.link-style a {
    color: #BFBFBF;
    font-weight: 700;
    text-decoration: underline;
    display: inline-block;
    transition: transform 0.25s ease;
}
.link-style a:hover {
    transform: scale(1.2);
}

/* ===== 圖片區塊設定 ===== */
#scene-image {
    padding: 20px;
    text-align: center;
}
#scene-image img {
    margin: 15px 1%;
    width: 45%;
    height: auto;
    border-radius: 25px;
    transition: transform 0.5s ease;
}
#scene-image img:hover {
    transform: scale(1.1);
}

/* 人類與機器人圖片區 */
#human-robot {
    overflow: hidden;
    background-color: transparent;
    text-align: center;
    position: relative;
    width: 100%;
    height: 650px;
}
#human-robot-left,
#human-robot-right {
    position: absolute;
    bottom: 0%;
    width: 100%;
    transition: transform 0.5s ease;
}
#human-robot-left {
    left: 0%;
    clip-path: polygon(0% 0%, 0 100%, 50.8% 100%, 53.6% 48%, 48.8% 48%, 50.8% 0%);
}
#human-robot-right {
    right: 0%;
    clip-path: polygon(100% 0%, 100% 100%, 49.2% 100%, 51.9% 51.3%, 47% 51.3%, 49.2% 0%);
}
#human-robot-left:hover,
#human-robot-right:hover {
    transform: scale(1.1);
}

/* 角色展示圖 */
#character-image {
    overflow: hidden;
    background-color: transparent;
    text-align: center;
    position: relative;
    width: 100%;
    height: 100%;
}
#character-image img {
    width: 22%;
    height: auto;
	margin-right: 3%;
	margin-left: 3%;
    border: 5px solid #FFFFFF;
    border-radius: 25px;
    transition: transform 0.5s ease;
}
#character-image img:hover {
    transform: scale(1.05);
}

/* ===== 頁尾 ===== */
footer {
    width: 100%;
    background-color: #222222;
    color: #FFFFFF;
    text-align: center;
    padding: 10px 0;
}

/* ===== 響應式：手機或小螢幕 ===== */
@media (max-width: 768px) {
    body {
        font-size: 14px;
    }

    #main-title {
        font-size: 1.5em;
        letter-spacing: 10px;
    }

    /* 
	#sub-title {
        font-size: 0.9em;
    } 
	*/

	section {
		padding: 20px;
		padding-left: 0px;
		padding-right: 0px;
		margin: 5px 25px;
		border-radius: 25px;
	}

    h2 {
        font-size: 2em;
    }

    p {
        font-size: 0.7em;
        letter-spacing: 4.5px;
    }

	nav ul li {
		display: inline;
		margin: 0 0px;
	}

    nav ul li a {
        font-size: 0.5em;
    }

    #download-button {
        font-size: 0.7em;
        padding: 8px 14px;
    }

	.link-style {
		right: 0px;
	}

    .link-style a {
        font-size: 0.9em;
    }
}