body{
    margin: 0px;
}

.header{
    width: 100%;
    height: auto;
    background-color: #B22D35;
    color: #FFFFFF;
    font-weight: bold;
    font-size: 23px;
    text-align: center;
    padding-top: 20px;
    padding-bottom: 20px;
    margin: 0px;
}

.firstview{
    width: 100%;
    height: auto;
    padding-bottom: 15px;
    background-image: url(無題32_20250717190345.PNG);
    background-repeat: no-repeat;
    background-position: center center;
    background-size: cover;
    position: relative;
}
.title{
    width: 100%;
    height: auto;
    color: #FFFFFF;
    font-weight: bold;
    font-size: 120px;
    text-align: center;
    margin: 0px;
    padding-top: 150px;
    padding-bottom: 150px;
    position: relative;
    z-index: 2;
}
.info{
    background-color: #FFFFFFAA;
    width: 680px;
    margin-left: auto;
    margin-right: auto;
    font-size: 12px;
    text-align: center;
    padding-top: 15px;
    padding-bottom: 15px;
    border-radius: 10px;
    position: relative;
    z-index: 2;
}
.black_layer{
    width: 100%;
    height: 100%;
    position: absolute;
    left: 0px;
    top: 0px;
    background-color: #00000080;
    z-index: 0;
}
.dot_layer{
    width: 100%;
    height: 100%;
    position: absolute;
    left: 0px;
    top: 0px;
    background-image: url(hero_bg_dot.png);
    opacity: 0.2;
    z-index: 1;
}

.contents{
    width: 680px;
    margin-left: auto;
    margin-right: auto;
}
.introduction{
    font-size: 28px;
    background-color: #F0F0F0;
    padding: 30px;
    border-radius: 10px;
    margin-top: 80px;
    position: relative;
}

.song-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 30px;
    padding: 10px 20px;
    flex-grow: 1;
}

.song-item {
    background-color: var(--card-background);
    border-radius: 12px;
    box-shadow: 0 6px 15px var(--shadow-color);
    overflow: hidden;
    width: 100%;
    max-width: 400px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
}

.song-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.video-wrapper {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%; 
    height: 0;
    overflow: hidden;
    background-color: #000;
}

.video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

.song-info {
    padding: 25px;
    text-align: left;
    display: flex;
    flex-direction: column;
    flex-grow: 1; 
}

.song-info h2 {
    font-size: 1.8em;
    color: var(--primary-color);
    margin-top: 0;
    margin-bottom: 8px;
    line-height: 1.3;
}

.song-info h3 {
    font-size: 1.2em;
    color: var(--secondary-color);
    margin-bottom: 15px;
    font-weight: normal;
}

.song-info .genre {
    font-size: 0.95em;
    color: #6c757d;
    margin-bottom: 10px;
    font-style: italic;
}

.song-info p {
    font-size: 1em;
    color: var(--text-color);
    margin-bottom: 0;
}

footer {
    text-align: center;
    padding: 20px;
    background-color: var(--header-bg);
    color: var(--header-text);
    margin-top: auto; 
    box-shadow: 0 -4px 8px var(--shadow-color);
}
@media (max-width: 768px) {
    header h1 {
        font-size: 2.2em;
    }

    header p {
        font-size: 1em;
    }

    .song-list {
        padding: 20px 15px;
        gap: 25px;
    }

    .song-item {
        max-width: 360px;
    }

    .song-info h2 {
        font-size: 1.5em;
    }

    .song-info h3 {
        font-size: 1.1em;
    }
}

@media (max-width: 480px) {
    header h1 {
        font-size: 1.8em;
    }

    header p {
        font-size: 0.9em;
    }

    .song-list {
        padding: 15px 10px;
        gap: 20px;
    }

    .song-item {
        max-width: 100%; 
    }

    .song-info {
        padding: 20px;
    }

    .song-info h2 {
        font-size: 1.4em;
    }

    .song-info h3 {
        font-size: 1em;
    }
}