/* ===== ベースリセット ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'IBM Plex Sans', sans-serif;
    background: #fff;
    color: #111;
    line-height: 1.6;
}

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

/* ===== ヘッダー ===== */
.site-header {
    padding: 20px;
    border-bottom: 1px solid #eee;
    text-align: center;
    position: sticky;
    top: 0;
    background: #fff;
}

.site-title {
    font-size: 2rem;
    margin-bottom: 10px;
}

.site-nav a {
    margin: 0 10px;
    font-size: 1rem;
    font-weight: bold;
}

/* ===== ギャラリー ===== */
.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 20px;
    padding: 40px;
}

.photo-card img {
    width: 100%;
    height: auto;
    display: block;
    border: 2px solid #f5f5f5;
    border-radius: 4px;
}

.photo-title {
    margin-top: 8px;
    font-size: 1rem;
    font-weight: 500;
    text-align: center;
}

/* ===== 投稿詳細ページ ===== */
.photo-detail {
    padding: 40px;
    text-align: center;
    max-width: 1100px;
    margin: 0 auto;
}

.photo-detail img {
    max-width: 100%;
    height: auto;
    border: 2px solid #eee;
    margin-bottom: 20px;
}

.photo-description {
    margin-top: 10px;
    font-size: 1rem;
    color: #444;
}

/* ===== About（1カラム・文章重視） ===== */

.about-container {
    max-width: 560px;   /* さらに狭める */
    margin: 140px auto; /* 上下余白を強く */
    padding: 0 20px;
}

.about-content h2 {
    font-weight: 500;   /* 少し軽く */
    letter-spacing: 0.1em;
    margin-bottom: 60px;
    font-size: 1rem;    /* 小さめ */
    text-transform: uppercase;
}

.about-content p {
    margin-bottom: 36px;
    line-height: 2.2;
    font-weight: 400;
}
/* ===== Contact Section ===== */

.contact-section {
    margin-top: 120px;
    padding-top: 40px;
    border-top: 1px solid #eee;
}

.contact-section h3 {
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 30px;
}

.contact-section p {
    margin-bottom: 20px;
    font-weight: 400;
}

.contact-section a {
    border-bottom: 1px solid #ccc;
    padding-bottom: 2px;
}

.contact-section a:hover {
    opacity: 0.6;
}

/* ===== フッター ===== */
.site-footer {
    text-align: center;
    padding: 20px;
    border-top: 1px solid #eee;
    font-size: 0.9rem;
    margin-top: 40px;
}