body {
    margin: 0;
    font-family: "Segoe UI", "Noto Sans JP", sans-serif;
    background: #2f4f58;
}

/* コンテナ */
.container {
    max-width: 420px;
    margin: 0 auto;
}

/* ヘッダー */
.header {
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    position: relative;
    font-size: 16px;
    font-weight: bold;
}

.search {
    position: absolute;
    left: 12px;
    font-size: 18px;
}

/* コンテンツ */
.content {
    background: #dcdcdc;
    border-radius: 20px 20px 0 0;
    padding: 10px;
    min-height: calc(100vh - 56px);
}

/* タブ */
.tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 12px;
}

.tab {
    flex: 1;
    text-align: center;
    padding: 8px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: bold;
    background: #eaeaea;
    color: #777;
}

.tab.active {
    background: #5aa374;
    color: white;
}

/* 路線リスト */
.line-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

/* カード */
.line-card {
    background: #eeeeee;
    border-radius: 14px;
    padding: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
}

/* 押したとき */
.line-card:active {
    transform: scale(0.97);
    background: #e2e2e2;
}

/* ナンバリング画像 */
.line-icon {
    width: 40px;
    height: 40px;
    object-fit: contain;
}

/* fallback */
.line-icon-fallback {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    background: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 14px;
    border: 2.5px solid;
}

/* テキスト */
.line-name {
    font-size: 15px;
    font-weight: bold;
}

/* 矢印 */
.arrow {
    margin-left: auto;
    font-size: 16px;
    color: #999;
}

/* 下ナビ */
.bottom-nav {
    position: fixed;
    bottom: 0;
    width: 100%;
    max-width: 420px;
    height: 56px;
    background: #2f4f58;
    display: flex;
    justify-content: space-around;
    align-items: center;
    color: #aaa;
    font-size: 11px;
}

.nav-item.active {
    color: white;
}