@charset "UTF-8";

html {
    font-size: 100%;
}

body {
    position: relative;
    min-height: 100vh;
    font-size: 0.875rem;
    background-color: #FFFFFF;
    font-family: 'Noto Sans JP', sans-serif;
}

h1 {
    font-family: 'Courier New', monospace;
    letter-spacing: 0.05em;
}

h1 span {
    color: #666666;
}

a {
    text-decoration: none;
    color: inherit;
}

.container {
    max-width: 1200px;
    margin-inline: auto;
    padding-inline: 15px;
}

header {
    margin: 20px 0 50px;
}

#portfolio-list {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
}

.portfolio-item {
    position: relative;
    width: calc(100% / 3 - 20px);
    border: 1px solid #E0E0E0;
    border-radius: 8px;
    overflow: hidden;
    transition: transform 0.3s ease, opacity 0.3s ease;
    opacity: 0;
    transform: translateY(-20px);
}

.portfolio-item.fade-in {
    opacity: 1;
    transform: translateY(0);
}

.portfolio-item.fade-in:hover {
    transform: translateY(-5px);
}

.portfolio-item img {
    width: 100%;
    height: auto;
}

.portfolio-title {
    padding: 0 15px 5px;
}

.portfolio-title p {
    font-size: 0.75rem;
}

.portfolio-text {
    padding: 0 15px;
    margin-bottom: 15px;
    display: -webkit-box;
    line-clamp: 4;
    -webkit-line-clamp: 4;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

footer {
    position: absolute;
    bottom: 0;
    width: 100%;
}

.copy-right {
    text-align: center;
    font-size: 0.75rem;
    color: #999999;
    margin-bottom: 10px;
}

@media (max-width: 1050px) {
    .portfolio-item {
        width: calc(100% / 2 - 15px);
    }
}

@media (max-width: 730px) {
    .portfolio-item {
        width: 100%;
    }
}