/**************** COMMON ****************/
#page-top {
    position: fixed;
    bottom: 50px;
    right: 50px;
    z-index: 10000;
    border: none;
    cursor: pointer;
    outline: none;
    padding: 0;
    appearance: none;
}

#page-top a {
    display: block;
    color: #623700;
    text-align: center;
    font-weight: bold;
    text-decoration: none;
    transition: transform 0.3s ease;
}

#page-top a:hover {
    transform: translateY(-10px);
}

#page-top a img {
    width: 75px;
    height: auto;
}

/* アニメーション共通 */
.slide-top, .slide-bottom, .slide-left, .slide-right, 
.slide-right02, .slide-right03, .slide-right04 {
    opacity: 0;
    transition: all 0.5s ease-out;
}
.slide-top    { transform: translateY(-20px); }
.slide-bottom { transform: translateY(20px); }
.slide-left   { transform: translateX(-20px); }
.slide-right, .slide-right02, .slide-right03, .slide-right04 { transform: translateX(20px); }

.slide-right03 { transition-duration: 1.5s; }
.slide-right04 { transition-duration: 2s; }

/**************** STORY TAB ****************/
input[type="radio"] { display: none; }

.tab_area {
    display: flex;
    flex-wrap: wrap-reverse;
    justify-content: flex-start;
    gap: 9px;
    border-bottom: 3px dashed #2f64ce;
    margin-bottom: 1rem;
}

/* ラベル基本設定 */
.tab_area label {
    position: relative;
    z-index: 1;
    display: inline-block;
    line-height: 1.3;
    text-align: center;
    color: #623700;
    font-family: 'YasashisaGothic', 'Noto Sans JP', sans-serif;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    box-sizing: border-box;
}

/* 背景花画像 */
.tab_area label::before {
    content: "";
    position: absolute;
    top: 45%; left: 50%;
    width: 130%; height: 130%;
    background: url(../img/hana.png) no-repeat center / contain;
    transform: translate(-50%, -50%);
    opacity: 0;
    transition: opacity 0.6s ease;
    z-index: -1;
    pointer-events: none;
}

.tab_area label:hover::before { opacity: 0.6; }

/* 選択状態（色変化） 1-54維持 */
#tab1:checked ~ .tab_area .tab1_label, #tab2:checked ~ .tab_area .tab2_label,
#tab3:checked ~ .tab_area .tab3_label, #tab4:checked ~ .tab_area .tab4_label,
#tab5:checked ~ .tab_area .tab5_label, #tab6:checked ~ .tab_area .tab6_label,
#tab7:checked ~ .tab_area .tab7_label, #tab8:checked ~ .tab_area .tab8_label,
#tab9:checked ~ .tab_area .tab9_label, #tab10:checked ~ .tab_area .tab10_label,
#tab11:checked ~ .tab_area .tab11_label, #tab12:checked ~ .tab_area .tab12_label,
#tab13:checked ~ .tab_area .tab13_label, #tab14:checked ~ .tab_area .tab14_label,
#tab15:checked ~ .tab_area .tab15_label, #tab16:checked ~ .tab_area .tab16_label,
#tab17:checked ~ .tab_area .tab17_label, #tab18:checked ~ .tab_area .tab18_label,
#tab19:checked ~ .tab_area .tab19_label, #tab20:checked ~ .tab_area .tab20_label,
#tab21:checked ~ .tab_area .tab21_label, #tab22:checked ~ .tab_area .tab22_label,
#tab23:checked ~ .tab_area .tab23_label, #tab24:checked ~ .tab_area .tab24_label,
#tab25:checked ~ .tab_area .tab25_label, #tab26:checked ~ .tab_area .tab26_label,
#tab27:checked ~ .tab_area .tab27_label, #tab28:checked ~ .tab_area .tab28_label,
#tab29:checked ~ .tab_area .tab29_label, #tab30:checked ~ .tab_area .tab30_label,
#tab31:checked ~ .tab_area .tab31_label, #tab32:checked ~ .tab_area .tab32_label,
#tab33:checked ~ .tab_area .tab33_label, #tab34:checked ~ .tab_area .tab34_label,
#tab35:checked ~ .tab_area .tab35_label, #tab36:checked ~ .tab_area .tab36_label,
#tab37:checked ~ .tab_area .tab37_label, #tab38:checked ~ .tab_area .tab38_label,
#tab39:checked ~ .tab_area .tab39_label, #tab40:checked ~ .tab_area .tab40_label,
#tab41:checked ~ .tab_area .tab41_label, #tab42:checked ~ .tab_area .tab42_label,
#tab43:checked ~ .tab_area .tab43_label, #tab44:checked ~ .tab_area .tab44_label,
#tab45:checked ~ .tab_area .tab45_label, #tab46:checked ~ .tab_area .tab46_label,
#tab47:checked ~ .tab_area .tab47_label, #tab48:checked ~ .tab_area .tab48_label,
#tab49:checked ~ .tab_area .tab49_label, #tab50:checked ~ .tab_area .tab50_label,
#tab51:checked ~ .tab_area .tab51_label, #tab52:checked ~ .tab_area .tab52_label,
#tab53:checked ~ .tab_area .tab53_label, #tab54:checked ~ .tab_area .tab54_label {
    color: #2f64ce;
}

/**************** パネルエリア ****************/
.tab_panel {
    width: 100%;
    padding: 0;
    display: none;
    box-sizing: border-box;
}

.tab_panel p {
    font-size: 14px;
    letter-spacing: 1px;
    text-align: center;
}

/* パネル表示切り替え 1-54維持 */
#tab1:checked ~ .panel_area #panel1, #tab2:checked ~ .panel_area #panel2,
#tab3:checked ~ .panel_area #panel3, #tab4:checked ~ .panel_area #panel4,
#tab5:checked ~ .panel_area #panel5, #tab6:checked ~ .panel_area #panel6,
#tab7:checked ~ .panel_area #panel7, #tab8:checked ~ .panel_area #panel8,
#tab9:checked ~ .panel_area #panel9, #tab10:checked ~ .panel_area #panel10,
#tab11:checked ~ .panel_area #panel11, #tab12:checked ~ .panel_area #panel12,
#tab13:checked ~ .panel_area #panel13, #tab14:checked ~ .panel_area #panel14,
#tab15:checked ~ .panel_area #panel15, #tab16:checked ~ .panel_area #panel16,
#tab17:checked ~ .panel_area #panel17, #tab18:checked ~ .panel_area #panel18,
#tab19:checked ~ .panel_area #panel19, #tab20:checked ~ .panel_area #panel20,
#tab21:checked ~ .panel_area #panel21, #tab22:checked ~ .panel_area #panel22,
#tab23:checked ~ .panel_area #panel23, #tab24:checked ~ .panel_area #panel24,
#tab25:checked ~ .panel_area #panel25, #tab26:checked ~ .panel_area #panel26,
#tab27:checked ~ .panel_area #panel27, #tab28:checked ~ .panel_area #panel28,
#tab29:checked ~ .panel_area #panel29, #tab30:checked ~ .panel_area #panel30,
#tab31:checked ~ .panel_area #panel31, #tab32:checked ~ .panel_area #panel32,
#tab33:checked ~ .panel_area #panel33, #tab34:checked ~ .panel_area #panel34,
#tab35:checked ~ .panel_area #panel35, #tab36:checked ~ .panel_area #panel36,
#tab37:checked ~ .panel_area #panel37, #tab38:checked ~ .panel_area #panel38,
#tab39:checked ~ .panel_area #panel39, #tab40:checked ~ .panel_area #panel40,
#tab41:checked ~ .panel_area #panel41, #tab42:checked ~ .panel_area #panel42,
#tab43:checked ~ .panel_area #panel43, #tab44:checked ~ .panel_area #panel44,
#tab45:checked ~ .panel_area #panel45, #tab46:checked ~ .panel_area #panel46,
#tab47:checked ~ .panel_area #panel47, #tab48:checked ~ .panel_area #panel48,
#tab49:checked ~ .panel_area #panel49, #tab50:checked ~ .panel_area #panel50,
#tab51:checked ~ .panel_area #panel51, #tab52:checked ~ .panel_area #panel52,
#tab53:checked ~ .panel_area #panel53, #tab54:checked ~ .panel_area #panel54 {
    display: block;
}

/**************** slickやbox ****************/
.slick-track { margin: 0; }
.slick-initialized .slick-slide { margin: 0; }
button.slick-next { display: block; }
.box { box-sizing: border-box; padding: 0; position: relative; }
.box img { width: 100%; height: auto; display: block; margin: 0 auto; }

/**************** RESPONSIVE ****************/

/* --- Mobile (767px以下) --- */
@media only screen and (max-width: 767px) {
    #page-top { bottom: 100px; right: 10px; }
    #page-top a img { width: 50px; }
    
    .tab_area { border-bottom: 2px dashed #2f64ce; }
    .tab_area label { font-size: 18px; margin: 0 7px 15px; padding: 5px; }

}

/* --- Tablet / Desktop (768px以上) --- */
@media only screen and (min-width: 768px) {
    .panel_area { padding-top: 1em; margin-bottom: 2em; }
    .tab_area label { font-size: 30px; margin: 0 10px 10px 0; padding: 10px; }
}

/* --- Specific Adjustments (768px - 1024px) --- */
@media only screen and (min-width: 768px) and (max-width: 1024px) {
    #page-top { right: 20px; }
    /* タブレット用のサイズ調整を統合 */
    .tab_area label {
        font-size: 22px;
        margin: 0 11px 10px 0;
        padding: 12px 14px;
    }
}