/* --- 既存のコードを活かした調整版 --- */
.schedule-main {
    padding: 60px 0;
    background-color: #f8f9fa;
    color: #333;
    font-family: "Helvetica Neue", Arial, "Hiragino Kaku Gothic ProN", "Hiragino Sans", sans-serif;
}

.container { max-width: 900px; margin: 0 auto; padding: 0 20px; }

.section-title {
    font-size: 2.2rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 10px;
    color: #1a1a1a;
}

.section-lead {
    text-align: center;
    margin-bottom: 60px;
    color: #666;
}

/* アコーディオン設定 */
.year-section {
    margin-bottom: 20px;
    border: none;
}

.year-section summary {
    list-style: none;
    cursor: pointer;
    position: relative;
    padding-top: 40px; /* 年号を表示するスペース */
}

.year-section summary::-webkit-details-marker { display: none; }

/* 年号の大きな数字 */
.year-head {
    font-size: 4rem;
    color: #e0e0e0;
    font-weight: 900;
    line-height: 1;
    margin-bottom: -30px;
    display: block;
    user-select: none;
}

/* 公演カード */
.concert-item {
    display: flex;
    align-items: center;
    background: #ffffff;
    border-left: 5px solid #ff69b4; /* PPPピンク */
    padding: 20px 25px;
    margin-bottom: 15px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
}

.concert-item:hover {
    transform: translateX(5px);
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.item-status { min-width: 100px; }
.badge {
    font-size: 0.7rem;
    padding: 3px 10px;
    border-radius: 2px;
    letter-spacing: 1px;
    border: 1px solid #ddd;
}
.badge.upcoming { background: #ff69b4; color: #fff; border-color: #ff69b4; } /* 未来の公演用 */
.badge.finished { background: #f0f0f0; color: #888; }

.item-date {
    min-width: 90px;
    font-family: 'Georgia', serif;
    font-weight: 700;
    font-size: 1.2rem;
}

.item-content { flex-grow: 1; }
.concert-title a {
    color: #1a1a1a;
    text-decoration: none;
    font-size: 1.1rem;
    font-weight: 700;
}
.concert-title a:hover { color: #ff69b4; text-decoration: underline; }

.concert-details {
    margin-top: 8px;
    font-size: 0.85rem;
    color: #777;
    display: flex;
    gap: 15px;
}
/* --- 復活させた VIEW DETAIL ボタン --- */
.btn-detail {
    display: inline-block;
    background: #1a1a1a;
    color: #fff !important; /* 文字色を白に固定 */
    padding: 8px 18px;
    font-size: 0.8rem;
    font-weight: bold;
    border-radius: 2px;
    text-decoration: none;
    white-space: nowrap;
    transition: 0.3s;
}
.btn-detail:hover {
    background: #ff69b4;
    color: #fff !important;
}

/* スマホ対応 */
@media (max-width: 768px) {
    .concert-item { flex-direction: column; align-items: flex-start; }
    .year-head { font-size: 3rem; margin-bottom: -20px; }
    .item-date { margin-bottom: 5px; }
    .concert-details { flex-direction: column; gap: 5px; }
}