/* 共通スタイル */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    list-style: none;
    -webkit-tap-highlight-color: transparent;
    /* モバイルの青いハイライトを無効化 */
}

h1 {
    font-size: 24px;
    margin-bottom: 24px;
}

@media (min-width: 830px) {
    h1 {
        text-align: center;
        margin-bottom: 30px;
    }
}

h2 {
    text-align: center;
    margin-bottom: 20px;
    font-size: 1.8em;
    color: var(--text-color);
}

#news {
    background: var(--bg-color);
    padding: 14px 18px;
    box-shadow: var(--neumorphism-shadow);
    border-radius: var(--border-radius);
    max-width: var(--max-width);
    width: 100%;
    margin: 0 0 24px;
}

#news h2 {
    margin-bottom: 10px;
    font-size: 1.5em;
}

.news-intro {
    text-align: center;
    line-height: 1.6;
    margin-bottom: 10px;
}

.news-pager {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 10px;
    margin: 0 0 8px;
}

.news-pager__button {
    border: none;
    border-radius: 10px;
    padding: 8px 10px;
    background: var(--bg-color);
    color: var(--text-color);
    box-shadow: var(--neumorphism-shadow);
    cursor: pointer;
    font-weight: 700;
    min-height: 38px;
}

.news-pager__button:first-of-type {
    justify-self: start;
}

.news-pager__button:last-of-type {
    justify-self: end;
}

.news-pager__button:disabled {
    opacity: 0.45;
    cursor: default;
}

.news-page-label {
    text-align: center;
    font-weight: 700;
    font-size: 13px;
}

.news-swipe-hint {
    margin: 0 0 8px;
    text-align: center;
    font-size: 12px;
    opacity: 0.8;
}

.news-card {
    border-radius: 10px;
    padding: 12px 14px;
    background: var(--bg-color);
    box-shadow: var(--neumorphism-shadow);
}

.news-card:focus {
    outline: 2px solid rgba(44, 132, 226, 0.65);
    outline-offset: 2px;
}

.news-card__header {
    margin: 2px 0 14px;
    text-align: center;
}

.news-card time {
    display: inline-block;
    padding: 4px 12px;
    font-weight: 700;
    border-radius: 999px;
    background: rgba(120, 130, 150, 0.12);
}

.news-list {
    margin: 0;
    padding: 0;
}

.news-list li {
    list-style: disc;
    margin-left: 20px;
    font-size: 13px;
    line-height: 1.65;
}

.news-list li+li {
    margin-top: 6px;
}

@media (min-width: 769px) {
    .news-swipe-hint {
        display: none;
    }
}

h3 {
    margin-top: 20px;
    font-size: 1.4em;
    color: var(--text-color);
}

h4 {
    margin-top: 15px;
    font-size: 1.2em;
    color: var(--text-color);
}

a {
    color: var(--text-color);
    text-decoration: none;
}


button:active {
    background-color: transparent;
}

/* ニューモーフィズムのスタイル */
:root {
    --bg-color: #f2f2f2;
    --text-color: #444444;
    --text-sub-color: #6f7782;
    --hover-color: #d9dde3;
    --active-color: #cfd5dc;
    --border-soft: #d5dae1;
    --bg-main-dark: #0f1115;
    --bg-card-dark: #181c22;
    --bg-sub-dark: #1f242c;
    --text-main-dark: #e6e8eb;
    --text-sub-dark: #a8b0ba;
    --border-dark: #2a3038;
    --accent-soft-dark: #8ea3bf;
    --neumorphism-shadow: 6px 6px 12px rgba(0, 0, 0, 0.1), -6px -6px 12px rgba(255, 255, 255, 0.8);
    --neumorphism-light: 3px 3px 6px rgba(0, 0, 0, 0.1);
    --neumorphism-dark: 0px 0px 6px rgba(255, 255, 255, 0.8);
    --section-padding: 20px;
    --max-width: 800px;
    --border-radius: 10px;
    --fixed-control-size: 52px;
}

body.theme--dark,
body.dark-theme {
    --bg-color: var(--bg-card-dark);
    --text-color: var(--text-main-dark);
    --text-sub-color: var(--text-sub-dark);
    --hover-color: #252b34;
    --active-color: #212730;
    --border-soft: var(--border-dark);
    --neumorphism-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    --neumorphism-light: inset 1px 1px 0 rgba(255, 255, 255, 0.03);
    --neumorphism-dark: inset -1px -1px 0 rgba(0, 0, 0, 0.36);
}

body {
    display: flex;
    justify-content: center;
    flex-direction: column;
    align-items: center;
    font-family: Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color 0.3s, color 0.3s;
    scroll-behavior: smooth;
    /* スムーズスクロールを全体に適用 */
    padding-bottom: 20vh;
    text-align: justify;
}

@media (max-width: 767px) {
    body {
        padding-bottom: 30vh;
    }
}

.container {
    width: 100%;
    max-width: 800px;
    padding: 20px 20px;
    border-radius: 20px;
    box-shadow: var(--neumorphism-shadow);
}

/* headerとナビゲーションメニューのスタイル */
header {
    width: 100%;
    background-color: var(--bg-color);
    box-shadow: var(--neumorphism-shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 789px;
    padding: 0.6em 1em;
    margin: 0 auto;
}

/* テーマ切り替えスイッチ */
.theme-switch {
    display: flex;
    align-items: center;
    gap: 10px;
}

.theme-switch__icon {
    width: 30px;
    height: 30px;
}

.theme-switch__icon--light {
    background: #ffd700;
    border-radius: 50%;
    box-shadow: var(--neumorphism-light);
}

.theme-switch__icon--dark {
    background: #556b8d;
    border-radius: 50%;
    /* box-shadow: var(--neumorphism-dark); */
}

.theme-switch__toggle {
    display: none;
}

.theme-switch__slider {
    position: relative;
    width: 60px;
    height: 30px;
    background: var(--bg-color);
    border-radius: 15px;
    box-shadow: var(--neumorphism-shadow);
    cursor: pointer;
}

.theme-switch__slider::before {
    content: "";
    position: absolute;
    top: 3px;
    left: 3px;
    width: 24px;
    height: 24px;
    background: #e0e0e0;
    border-radius: 50%;
    box-shadow: var(--neumorphism-shadow);
    transition: transform 0.3s;
}

.theme-switch__toggle:checked+.theme-switch__slider::before {
    transform: translateX(30px);
}

/* ダークテーマ対応のスイッチ */
body.theme--dark .theme-switch__slider {
    background: var(--bg-sub-dark);
    border: 1px solid var(--border-dark);
}

body.theme--dark .theme-switch__slider::before {
    background: #2a3038;
}

/* ロゴのスタイル */
.logo {
    display: flex;
    align-items: center;
    font-size: 1em;
    font-weight: bold;
    color: var(--text-color);
    transition: color 0.3s ease;
}

.logo img {
    max-width: 28px;
    margin-right: 6px;
}

@media (max-width: 768px) {
    .logo {
        font-size: 0.7em;
    }
}

/* ハンバーガーメニュー */
.menu-icon {
    display: flex;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
}

.menu-icon span {
    width: 25px;
    height: 2px;
    background-color: var(--text-color);
    transition: transform 0.3s, opacity 0.3s;
}

/* ナビゲーションメニューのスタイル */
.nav-menu {
    display: none;
    gap: 1em;
    width: 100%;
    opacity: 0;
    transform: translateY(-20px);
    transition: opacity 0.4s ease-in-out, transform 0.4s ease-in-out;
    position: absolute;
    top: 100%;
    right: 0;
    background-color: var(--bg-color);
    box-shadow: var(--neumorphism-shadow);
    border-radius: 0 0 15px 15px;
}

.nav-menu ul {
    display: flex;
    flex-direction: column;
    max-width: 799px;
    margin: 0 auto;
    width: 100%;
    list-style: none;
    padding: 30px 0 36px;
    align-items: center;
    gap: 1em;
}

.nav-menu ul li {
    width: 86%;
    flex: 1;
    /* 各 li タグの幅を均等にする */
    text-align: center;
    /* メニュー項目を中央揃えにする */
}

.nav-menu ul li a {
    color: var(--text-color);
    transition: color 0.3s ease, background-color 0.3s ease, box-shadow 0.3s;
    border-radius: 8px;
    box-shadow: var(--neumorphism-light), var(--neumorphism-dark);
    display: block;
    /* リンクを li 全体に広げる */
    padding: 1em;
    width: 100%;
    text-align: center;
}

.nav-menu ul li a:hover {
    background-color: var(--hover-color);
    color: #007BFF;
    box-shadow: inset var(--neumorphism-light), inset var(--neumorphism-dark);
}

.menu-toggle {
    display: none;
}

.menu-toggle:checked+.menu-icon+.nav-menu {
    display: flex;
}

.menu-toggle:checked+.menu-icon span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle:checked+.menu-icon span:nth-child(2) {
    opacity: 0;
}

.menu-toggle:checked+.menu-icon span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ハンバーガーメニューが開かれる際のアニメーション */
.menu-toggle:checked+.menu-icon+.nav-menu {
    display: flex;
    opacity: 1;
    transform: translateY(0);
    animation: slideIn 0.5s forwards ease-in-out;
    /* メニュー表示時のアニメーション */
}

/* 非表示アニメーション用クラス */
.nav-menu.fade-out {
    opacity: 0;
    transform: translateY(-20px);
    transition: opacity 0.4s ease-in-out, transform 0.4s ease-in-out;
}

@keyframes slideIn {
    0% {
        opacity: 0;
        transform: translateY(-20px);
    }

    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ダークテーマ対応 */
body.theme--dark .nav-menu ul li a {
    color: var(--text-color);
    background-color: var(--bg-card-dark);
    box-shadow: var(--neumorphism-shadow);
}

body.theme--dark .nav-menu ul li a:hover {
    color: var(--accent-soft-dark);
    background-color: #222831;
    box-shadow: inset var(--neumorphism-light), inset var(--neumorphism-dark);
}

body.theme--dark .menu-icon span {
    background-color: var(--text-color);
}

#midiForm {
    min-width: 335px;
    min-height: 590px;
    /* 必要な高さを確保 */
}

.form-group {
    text-align: center;
}

body.theme--dark,
body.dark-theme {
    background-color: var(--bg-main-dark);
}

.rhythm-settings {
    width: 100%;
    max-width: none;
    margin: 0 auto 18px;
    padding: 14px;
    border-radius: 12px;
    box-shadow: var(--neumorphism-shadow);
    background: var(--bg-color);
}

.rhythm-settings h3 {
    margin: 0 0 10px;
    font-size: 16px;
}

.settings-accordion {
    --accordion-max-height: 1120px;
}

.settings-accordion__header-wrap {
    margin: 0;
    padding-bottom: 8px;
    border-bottom: 1px solid rgba(120, 130, 150, 0.22);
}

.settings-accordion__header {
    width: 100%;
    min-height: 46px;
    border: 0;
    margin: 0;
    padding: 0;
    background: transparent;
    color: inherit;
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 10px;
    text-align: left;
    cursor: pointer;
}

.settings-accordion__header-text {
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.settings-accordion__title {
    margin: 0;
    font-size: 16px;
    font-weight: 700;
    line-height: 1.35;
}

.settings-accordion__summary {
    display: block;
    margin: 4px 0 0;
    font-size: 11px;
    line-height: 1.4;
    opacity: 0.78;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.settings-accordion__body {
    margin-top: 10px;
    display: grid;
    gap: 10px;
}

.part-tab-panel[data-accordion-static="true"] .section-accordion__header {
    cursor: default;
}

.part-tab-panel[data-accordion-static="true"] .part-setting-card__toggle {
    justify-content: flex-start;
}

.part-tab-panel[data-accordion-static="true"] .part-setting-card__toggle-icon {
    display: none;
}

.rhythm-mode-group {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 10px;
}

.rhythm-mode-label {
    font-weight: 600;
}

.rhythm-global-controls {
    text-align: left;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.rhythm-global-controls label {
    display: block;
    margin-bottom: 6px;
}

.part-settings-help {
    margin: 0;
    font-size: 12px;
    line-height: 1.5;
    opacity: 0.82;
}

.part-tabs.part-tabs--legacy {
    display: none !important;
}

.part-carousel-nav {
    display: grid;
    grid-template-columns: 44px minmax(0, 1fr) 44px;
    align-items: center;
    gap: 8px;
    margin: 0 0 6px;
}

.part-carousel-nav__arrow {
    min-height: 44px;
    border: 0;
    border-radius: 10px;
    background: rgba(120, 130, 150, 0.16);
    color: inherit;
    font-size: 22px;
    line-height: 1;
    cursor: pointer;
}

.part-carousel-nav__arrow:focus-visible {
    outline: 2px solid rgba(120, 130, 150, 0.75);
    outline-offset: 2px;
}

.part-carousel-nav__current {
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    background: rgba(120, 130, 150, 0.12);
    border: 1px solid rgba(120, 130, 150, 0.22);
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 0.01em;
}

.part-carousel-nav__dots {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin: 0 0 10px;
}

.part-carousel-nav__dot {
    width: 8px;
    height: 8px;
    padding: 0;
    border: 0;
    border-radius: 999px;
    background: rgba(120, 130, 150, 0.35);
    cursor: pointer;
}

.part-carousel-nav__dot.is-active {
    background: rgba(120, 130, 150, 0.85);
}

.part-settings-scroll {
    overflow-x: visible;
    overflow-y: visible;
    margin: 0;
    padding: 0;
}

.part-settings-scroll::-webkit-scrollbar {
    height: 0;
}

.part-settings-scroll::-webkit-scrollbar-thumb {
    background: transparent;
    border-radius: 999px;
}

.part-settings-track {
    display: block;
    align-items: stretch;
    gap: 0;
    min-width: 0;
}

.part-settings-card {
    flex: 1 1 auto;
    display: flex;
    flex-direction: column;
    width: 100%;
}

.part-settings-group.part-tab-panel {
    display: none;
}

.part-settings-group.part-tab-panel.is-active {
    display: flex;
}

.part-settings-group.part-tab-panel[hidden] {
    display: none !important;
}

.part-settings-group {
    position: relative;
    display: flex;
    flex-direction: column;
    margin: 0;
    min-width: 0;
    padding: 16px 14px 16px;
    border-radius: 14px;
    border: 1px solid rgba(120, 130, 150, 0.35);
    background: linear-gradient(180deg, rgba(120, 130, 150, 0.12) 0%, rgba(120, 130, 150, 0.05) 100%);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.06);
}

.part-setting-card__legend {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

.part-setting-card__header {
    margin: 0 0 10px;
    padding-bottom: 9px;
    border-bottom: 1px solid rgba(120, 130, 150, 0.22);
}

.section-accordion {
    --accordion-max-height: 760px;
}

.part-setting-card__toggle,
.section-accordion__header {
    width: 100%;
    border: 0;
    margin: 0;
    padding: 0;
    background: transparent;
    color: inherit;
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 10px;
    text-align: left;
    cursor: pointer;
}

.part-setting-card__toggle:focus-visible,
.section-accordion__header:focus-visible {
    outline: 2px solid rgba(120, 130, 150, 0.7);
    outline-offset: 3px;
    border-radius: 8px;
}

.part-setting-card__toggle-text {
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.part-setting-card__toggle-icon,
.section-accordion__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border-radius: 999px;
    font-size: 14px;
    line-height: 1;
    background: rgba(120, 130, 150, 0.12);
    transition: transform 0.2s ease;
}

.part-setting-card__content {
    display: grid;
    gap: 0;
}

.section-accordion__body {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    transform: translateY(-4px);
    pointer-events: none;
    transition:
        max-height 0.2s ease-out,
        opacity 0.2s ease-out,
        transform 0.2s ease-out;
}

.section-accordion.is-open > .section-accordion__body {
    max-height: var(--accordion-max-height);
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.section-accordion:not(.is-open) .part-setting-card__header {
    margin-bottom: 0;
}

.section-accordion:not(.is-open) .section-accordion__icon {
    transform: rotate(-90deg);
}

.part-setting-card__title {
    margin: 0;
    font-size: 15px;
    font-weight: 700;
    line-height: 1.35;
}

.part-setting-card__description {
    margin: 4px 0 0;
    font-size: 12px;
    line-height: 1.5;
    opacity: 0.78;
}

.part-setting-card__summary,
.section-accordion__summary {
    display: block;
    margin: 4px 0 0;
    font-size: 11px;
    line-height: 1.35;
    opacity: 0.72;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.part-setting-card__body {
    display: grid;
    gap: 10px;
}

.part-setting-card__grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px 12px;
    align-items: start;
}

.part-setting-card__field {
    min-width: 0;
}

.part-setting-card__field--wide {
    grid-column: 1 / -1;
}

.part-setting-group {
    display: flex;
    flex-direction: column;
    gap: 9px;
}

.part-settings-group label {
    margin: 0;
    color: var(--text-sub-color);
    font-weight: 600;
    letter-spacing: 0.01em;
}

.part-settings-group .form__select {
    width: 100%;
    max-width: none;
    margin: 0;
    padding: 12px 12px;
    text-align: left;
    text-align-last: left;
}

.part-setting-card__actions {
    margin-top: 12px;
    padding-top: 11px;
    border-top: 1px solid rgba(120, 130, 150, 0.25);
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 8px;
}

.part-setting-card__actions>.part-setting-card__primary-action {
    grid-column: 1 / -1;
}

.part-settings-group .apply-accompaniment-all-button {
    width: 100%;
    margin-top: 0;
    min-height: 44px;
    padding: 11px 12px;
}

#applyAccompanimentToAllButton.part-setting-card__primary-action,
#applyBassPatternToAllButton.part-setting-card__primary-action,
#applyStringsPatternToAllButton.part-setting-card__primary-action {
    font-weight: 800;
    background: linear-gradient(180deg, rgba(120, 130, 150, 0.2) 0%, rgba(120, 130, 150, 0.08) 100%);
}

#applyPianoOctaveToAllButton.part-setting-card__secondary-action,
#applyBassOctaveToAllButton.part-setting-card__secondary-action,
#applyStringsOctaveToAllButton.part-setting-card__secondary-action,
#randomAccompanimentPatternButton,
#randomBassPatternButton,
#randomStringsPatternButton {
    font-weight: 600;
    background: rgba(120, 130, 150, 0.08);
    box-shadow: 4px 4px 10px rgba(0, 0, 0, 0.07), -4px -4px 10px rgba(255, 255, 255, 0.55);
}

.part-setting-card__actions .part-setting-card__legacy-action,
#randomAccompanimentPatternButton,
#randomBassPatternButton,
#randomStringsPatternButton {
    display: none !important;
}

.rhythm-global-controls.is-hidden {
    display: none;
}

.random-progression-actions {
    margin: 8px 0 14px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
}

.random-progression-ending-toggle {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    line-height: 1.4;
    cursor: pointer;
}

.random-progression-ending-toggle input[type="checkbox"] {
    margin: 0;
}

#applyRhythmToAllButton,
#applyAccompanimentToAllButton,
#randomAccompanimentPatternButton,
#applyPianoOctaveToAllButton,
#applyBassPatternToAllButton,
#randomBassPatternButton,
#applyBassOctaveToAllButton,
#applyStringsPatternToAllButton,
#randomStringsPatternButton,
#applyStringsOctaveToAllButton,
#randomProgressionButton {
    width: 100%;
    margin-top: 8px;
    min-height: 44px;
    padding: 10px 12px;
    border: none;
    border-radius: 10px;
    background: var(--bg-color);
    color: var(--text-color);
    box-shadow: var(--neumorphism-shadow);
    cursor: pointer;
    transition: box-shadow 0.2s ease, outline-color 0.2s ease, background-color 0.2s ease;
}

#randomProgressionButton {
    margin-top: 0;
}

.apply-accompaniment-all-button {
    font-weight: 700;
}

#applyAccompanimentToAllButton.has-pending-apply {
    outline: 1px solid rgba(224, 183, 63, 0.72);
    outline-offset: 1px;
    background-color: rgba(246, 218, 130, 0.2);
    box-shadow: var(--neumorphism-shadow);
    animation: none;
}

#applyAccompanimentToAllButton.is-applied {
    outline: 1px solid rgba(60, 170, 110, 0.42);
    outline-offset: 1px;
    background-color: rgba(60, 170, 110, 0.08);
    box-shadow: var(--neumorphism-shadow);
    animation: none;
}

body.theme--dark #applyAccompanimentToAllButton.has-pending-apply {
    outline-color: rgba(241, 204, 103, 0.72);
    background-color: rgba(171, 129, 20, 0.2);
    box-shadow: var(--neumorphism-shadow);
}

body.theme--dark .part-settings-group {
    border-color: var(--border-dark);
    background: var(--bg-card-dark);
}

body.theme--dark .settings-accordion__header-wrap {
    border-bottom-color: var(--border-dark);
}

body.theme--dark .settings-accordion__summary {
    color: var(--text-sub-dark);
    opacity: 1;
}

body.theme--dark .part-carousel-nav__arrow {
    background: rgba(160, 170, 190, 0.14);
    color: var(--text-color);
}

body.theme--dark .part-carousel-nav__current {
    background: rgba(160, 170, 190, 0.1);
    border-color: rgba(160, 170, 190, 0.26);
}

body.theme--dark .part-carousel-nav__dot {
    background: rgba(170, 180, 200, 0.45);
}

body.theme--dark .part-carousel-nav__dot.is-active {
    background: rgba(226, 232, 242, 0.92);
}

body.theme--dark .part-setting-card__description {
    color: var(--text-sub-dark);
    opacity: 1;
}

body.theme--dark .part-setting-card__summary,
body.theme--dark .section-accordion__summary {
    color: var(--text-sub-dark);
    opacity: 1;
}

body.theme--dark .part-setting-card__actions {
    border-top-color: var(--border-dark);
}

body.theme--dark .part-setting-card__header {
    border-bottom-color: var(--border-dark);
}

body.theme--dark #applyAccompanimentToAllButton.part-setting-card__primary-action,
body.theme--dark #applyBassPatternToAllButton.part-setting-card__primary-action,
body.theme--dark #applyStringsPatternToAllButton.part-setting-card__primary-action {
    background: linear-gradient(180deg, rgba(176, 184, 210, 0.28) 0%, rgba(176, 184, 210, 0.14) 100%);
}

body.theme--dark #applyPianoOctaveToAllButton.part-setting-card__secondary-action,
body.theme--dark #applyBassOctaveToAllButton.part-setting-card__secondary-action,
body.theme--dark #applyStringsOctaveToAllButton.part-setting-card__secondary-action,
body.theme--dark #randomAccompanimentPatternButton,
body.theme--dark #randomBassPatternButton,
body.theme--dark #randomStringsPatternButton {
    background: rgba(176, 184, 210, 0.12);
    box-shadow: 4px 4px 10px rgba(0, 0, 0, 0.28), -4px -4px 10px rgba(255, 255, 255, 0.05);
}

@media (prefers-reduced-motion: reduce) {
    #applyAccompanimentToAllButton.has-pending-apply {
        animation: none;
    }

    .part-setting-card__toggle-icon,
    .section-accordion__icon,
    .section-accordion__body {
        transition: none;
    }
}

#applyRhythmToAllButton:hover,
#applyAccompanimentToAllButton:hover,
#randomAccompanimentPatternButton:hover,
#applyPianoOctaveToAllButton:hover,
#applyBassPatternToAllButton:hover,
#randomBassPatternButton:hover,
#applyBassOctaveToAllButton:hover,
#applyStringsPatternToAllButton:hover,
#randomStringsPatternButton:hover,
#applyStringsOctaveToAllButton:hover,
#randomProgressionButton:hover {
    box-shadow: 4px 4px 10px rgba(0, 0, 0, 0.2), -4px -4px 10px rgba(255, 255, 255, 0.1);
}

#applyRhythmToAllButton:active,
#applyAccompanimentToAllButton:active,
#randomAccompanimentPatternButton:active,
#applyPianoOctaveToAllButton:active,
#applyBassPatternToAllButton:active,
#randomBassPatternButton:active,
#applyBassOctaveToAllButton:active,
#applyStringsPatternToAllButton:active,
#randomStringsPatternButton:active,
#applyStringsOctaveToAllButton:active,
#randomProgressionButton:active {
    box-shadow: inset 4px 4px 8px rgba(0, 0, 0, 0.2), inset -4px -4px 8px rgba(255, 255, 255, 0.1);
}

#randomProgressionButton:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

@media (min-width: 1025px) {
    .rhythm-settings {
        padding: 14px 16px;
    }

    .rhythm-settings h3 {
        margin: 0 0 10px;
    }

    .rhythm-mode-group {
        margin: 0 0 10px;
        flex-wrap: wrap;
    }

    .rhythm-global-controls {
        gap: 12px;
    }

    .part-settings-card {
        flex-basis: clamp(250px, 30vw, 360px);
    }

    #rhythmGlobalPattern,
    #globalInstrument,
    #globalAccompanimentPattern,
    #globalPianoOctave,
    #globalBassPattern,
    #globalBassOctave,
    #globalStringsPattern,
    #globalStringsOctave {
        width: 100%;
        min-width: 0;
        max-width: none;
        margin: 0;
        flex: 0 0 auto;
        padding: 12px 12px;
        text-align: left;
        text-align-last: left;
    }

    .part-settings-group .apply-accompaniment-all-button {
        width: 100%;
        margin-top: 0;
        padding: 9px 10px;
        font-size: 14px;
        line-height: 1.3;
        white-space: normal;
    }

    .random-progression-actions {
        flex-direction: row;
        align-items: center;
        gap: 12px;
    }
}

@media (min-width: 720px) {
    .part-setting-card__actions {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .part-setting-card__actions>.part-setting-card__primary-action {
        grid-column: 1 / -1;
    }
}

/* select 要素のカスタムスタイル */
.form__select {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    text-align: center;
    text-align-last: center;
    text-align: -webkit-center;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.03) 0%, rgba(0, 0, 0, 0.03) 100%),
        var(--bg-color);
    color: var(--text-color);
    padding: 20px 0px;
    margin: 16px 0 24px;
    border: 1px solid rgba(120, 130, 150, 0.24);
    border-radius: 12px;
    box-shadow:
        var(--neumorphism-shadow),
        inset 0 0 0 1px rgba(255, 255, 255, 0.03);
    font-size: 16px;
    width: 100%;
    max-width: 400px;
    cursor: pointer;
    outline: none;
    transition: box-shadow 0.25s, background-color 0.25s, border-color 0.25s;
}

/* select フォーカス時のスタイル */
.form__select:focus {
    border-color: rgba(120, 150, 195, 0.62);
    box-shadow:
        0 0 0 2px rgba(120, 150, 195, 0.2),
        var(--neumorphism-shadow);
}

body.theme--dark .form__select {
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.04) 0%, rgba(0, 0, 0, 0.15) 100%),
        var(--bg-sub-dark);
    border-color: rgba(168, 176, 186, 0.34);
    box-shadow:
        0 2px 6px rgba(0, 0, 0, 0.24),
        inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

body.theme--dark .form__select:focus {
    border-color: rgba(156, 181, 221, 0.72);
    box-shadow:
        0 0 0 2px rgba(156, 181, 221, 0.22),
        0 2px 8px rgba(0, 0, 0, 0.28);
}

.scale-select {
    width: 176px;
}

/* シーケンサーレイアウト */
.sequence-row {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: center;
}

.measure {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 10px;
    border-radius: 10px;
    background: var(--bg-color);
    box-shadow: var(--neumorphism-shadow);
    flex: 1 1 150px;
    min-width: 108px;
    max-width: 200px;
    margin-bottom: 20px;
}

.measure h3 {
    margin-bottom: 16px;
    text-align: center;
}

.measure-nondiatonic {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    margin: 0 0 8px;
    font-size: 12px;
    text-align: center;
    cursor: pointer;
}

.measure-nondiatonic input[type="checkbox"] {
    margin: 0;
    flex: 0 0 auto;
}

.measure-rhythm {
    width: 100%;
}

.measure-rhythm--hidden {
    display: none;
}

.measure-rhythm__label {
    display: block;
    text-align: center;
    margin: 0 0 4px;
    font-size: 12px;
}

.measure-rhythm .form__select {
    margin: 6px 0 14px;
    padding: 12px 0;
    font-size: 14px;
}

.measure-accompaniment {
    width: 100%;
}

.measure-accompaniment--hidden {
    display: none;
}

.measure-accompaniment__label {
    display: block;
    text-align: center;
    margin: 0 0 4px;
    font-size: 12px;
}

.measure-accompaniment .form__select {
    margin: 6px 0 12px;
    padding: 12px 0;
    font-size: 14px;
}

.measure-part-settings {
    width: 100%;
    margin: 0 0 10px;
    padding: 8px 0 0;
    border-top: 1px dashed rgba(120, 130, 150, 0.28);
}

.measure-settings-accordion.section-accordion {
    --accordion-max-height: 380px;
}

.measure-settings-accordion__header {
    align-items: center;
    padding: 2px 0 8px;
}

.measure-settings-accordion__summary {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.measure-settings-accordion__body {
    display: grid;
    gap: 0;
}

.measure-settings-accordion__header {
    display: none;
}

.measure-settings-accordion__body.section-accordion__body {
    max-height: none;
    opacity: 1;
    overflow: visible;
    transform: none;
    pointer-events: auto;
    transition: none;
}

.measure-settings-accordion:not(.is-open) .measure-settings-accordion__header {
    padding-bottom: 0;
}

.measure-part-settings__caption {
    margin: 0 0 6px;
    font-size: 11px;
    line-height: 1.4;
    opacity: 0.72;
    text-align: left;
}

.measure-part-settings--hidden {
    display: none;
}

.measure-individual-settings.is-hidden {
    display: none;
}

.measure-part-tabs.measure-part-tabs--legacy {
    display: none !important;
}

.measure-part-carousel {
    display: grid;
    grid-template-columns: 40px minmax(0, 1fr) 40px;
    align-items: center;
    gap: 6px;
    margin: 0 0 6px;
}

.measure-part-carousel__arrow {
    min-height: 40px;
    border: 0;
    border-radius: 10px;
    background: rgba(120, 130, 150, 0.16);
    color: inherit;
    font-size: 20px;
    line-height: 1;
    cursor: pointer;
}

.measure-part-carousel__arrow:focus-visible {
    outline: 2px solid rgba(120, 130, 150, 0.75);
    outline-offset: 2px;
}

.measure-part-carousel__current {
    min-height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    border: 1px solid rgba(120, 130, 150, 0.22);
    background: rgba(120, 130, 150, 0.12);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.01em;
}

.measure-part-carousel__dots {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin: 0 0 8px;
}

.measure-part-carousel__dot {
    width: 8px;
    height: 8px;
    padding: 0;
    border: 0;
    border-radius: 999px;
    background: rgba(120, 130, 150, 0.35);
    cursor: pointer;
}

.measure-part-carousel__dot.is-active {
    background: rgba(120, 130, 150, 0.85);
}

.measure-part-panels {
    min-width: 0;
}

.measure-part-panel {
    display: none;
}

.measure-part-panel.is-active {
    display: block;
}

.measure-part-panel[hidden] {
    display: none !important;
}

.measure-part-panel__label {
    display: block;
    text-align: center;
    margin: 0 0 4px;
    font-size: 12px;
    color: var(--text-sub-color);
    font-weight: 600;
    letter-spacing: 0.01em;
}

.measure-part-panel .form__select {
    margin: 6px 0 10px;
    padding: 10px 0;
    font-size: 14px;
}

.measure .measure-part-settings,
.measure .measure-accordion {
    transition: background-color 0.2s ease-out, border-color 0.2s ease-out, box-shadow 0.2s ease-out;
}

.measure .measure-part-settings.is-current,
.measure .measure-accordion.is-current {
    border-color: rgba(74, 126, 196, 0.45);
    background: linear-gradient(180deg, rgba(74, 126, 196, 0.12) 0%, rgba(74, 126, 196, 0.06) 100%);
    box-shadow: 0 0 0 1px rgba(74, 126, 196, 0.18);
}

.measure .measure-part-panel.is-playing {
    transition: opacity 0.2s ease-out, transform 0.2s ease-out;
    opacity: 1;
    transform: translateY(0);
}

.measure-accordion.section-accordion {
    width: 100%;
    margin: 0 0 10px;
    padding: 8px 0 0;
    border-top: 1px dashed rgba(120, 130, 150, 0.28);
    --accordion-max-height: 220px;
}

.measure-accordion__header {
    width: 100%;
    min-height: 44px;
    padding: 2px 0 10px;
    border: 0;
    background: transparent;
    color: inherit;
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 10px;
    text-align: left;
    cursor: pointer;
}

.measure-accordion__header-text {
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.measure-accordion__title {
    font-size: 13px;
    font-weight: 700;
    line-height: 1.3;
}

.measure-accordion__summary {
    font-size: 11px;
    line-height: 1.3;
    opacity: 0.78;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.measure-accordion__body {
    display: grid;
    gap: 0;
}

.measure-accordion__label,
.measure-bass__label,
.measure-strings__label {
    display: block;
    text-align: center;
    margin: 0 0 4px;
    font-size: 12px;
    color: var(--text-sub-color);
    font-weight: 600;
    letter-spacing: 0.01em;
}

.measure-accordion .measure-accordion__select.form__select,
.measure-bass .form__select,
.measure-strings .form__select {
    margin: 6px 0 10px;
    padding: 10px 0;
    font-size: 14px;
}

body.theme--dark .measure-accordion.section-accordion {
    border-top-color: var(--border-dark);
}

body.theme--dark .measure-part-settings {
    border-top-color: var(--border-dark);
}

body.theme--dark .measure-part-settings__caption {
    color: var(--text-sub-dark);
    opacity: 1;
}

body.theme--dark .measure-part-carousel__arrow {
    background: rgba(160, 170, 190, 0.14);
}

body.theme--dark .measure-part-carousel__current {
    background: rgba(160, 170, 190, 0.1);
    border-color: rgba(160, 170, 190, 0.26);
}

body.theme--dark .measure-part-carousel__dot {
    background: rgba(170, 180, 200, 0.45);
}

body.theme--dark .measure-part-carousel__dot.is-active {
    background: rgba(226, 232, 242, 0.92);
}

body.theme--dark .measure .measure-part-settings.is-current,
body.theme--dark .measure .measure-accordion.is-current {
    border-color: rgba(143, 163, 191, 0.5);
    background: linear-gradient(180deg, rgba(143, 163, 191, 0.16) 0%, rgba(143, 163, 191, 0.08) 100%);
    box-shadow: 0 0 0 1px rgba(143, 163, 191, 0.24);
}

body.theme--dark .measure-accordion__summary {
    color: var(--text-sub-dark);
    opacity: 1;
}

.measure-drag-handle {
    width: 100%;
    margin: 0 0 10px;
    padding: 6px 10px;
    border: none;
    border-radius: 8px;
    background-color: transparent;
    color: var(--text-color);
    font-size: 12px;
    text-align: center;
    cursor: grab;
}

.measure-drag-handle:active {
    cursor: grabbing;
}

.measure.dragging {
    opacity: 0.55;
}

.measure.drop-target {
    outline: 2px dashed rgba(80, 130, 210, 0.75);
    outline-offset: 3px;
}

.measure.is-playback-locked {
    opacity: 0.78;
    background-color: rgba(140, 154, 176, 0.12);
    pointer-events: none;
}

.measure.is-playback-locked .measure-drag-handle {
    opacity: 0.55;
}

/* 再生ボタンのスタイル */
.play-button {
    width: 76%;
    margin: 0 0 22px;
    padding: 10px 20px;
    font-size: 16px;
    color: var(--text-color);
    background-color: var(--bg-color);
    border: none;
    border-radius: 10px;
    box-shadow: var(--neumorphism-shadow);
    cursor: pointer;
    transition: box-shadow 0.3s, transform 0.2s;
}

.play-button:hover {
    box-shadow: 4px 4px 10px rgba(0, 0, 0, 0.2), -4px -4px 10px rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.play-button:active {
    box-shadow: inset 4px 4px 8px rgba(0, 0, 0, 0.2), inset -4px -4px 8px rgba(255, 255, 255, 0.1);
    transform: translateY(1px);
}

.play-button:disabled,
.play-button.is-playback-locked {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    box-shadow: inset 2px 2px 5px rgba(0, 0, 0, 0.12), inset -2px -2px 5px rgba(255, 255, 255, 0.08);
}

.play-button:disabled:hover,
.play-button.is-playback-locked:hover {
    transform: none;
    box-shadow: inset 2px 2px 5px rgba(0, 0, 0, 0.12), inset -2px -2px 5px rgba(255, 255, 255, 0.08);
}

/* ダークテーマ対応 */
body.theme--dark .play-button {
    color: var(--text-color);
    background-color: var(--bg-sub-dark);
    border: 1px solid var(--border-dark);
}

body.theme--dark .play-button:hover {
    box-shadow: 0 5px 12px rgba(0, 0, 0, 0.34);
}

.scale-overview-drawer {
    position: fixed;
    left: 0;
    top: 50%;
    z-index: 980;
    pointer-events: none;
    opacity: 1;
    transform: translate3d(0, -50%, 0);
    transition: transform 0.2s ease-out, opacity 0.2s ease-out;
}

.accompaniment-settings-drawer {
    position: fixed;
    left: 0;
    top: calc(50% + 112px);
    z-index: 978;
    pointer-events: none;
    opacity: 1;
    transform: translate3d(0, -50%, 0);
    transition: transform 0.2s ease-out, opacity 0.2s ease-out;
}

.drum-settings-drawer {
    position: fixed;
    left: 0;
    top: calc(50% + 224px);
    z-index: 977;
    pointer-events: none;
    opacity: 1;
    transform: translate3d(0, -50%, 0);
    transition: transform 0.2s ease-out, opacity 0.2s ease-out;
}

.accompaniment-settings-drawer.is-collapsed {
    transform: translate3d(calc(-1 * var(--fixed-control-size) - 12px), -50%, 0);
    opacity: 0;
    pointer-events: none;
}

.drum-settings-drawer.is-collapsed {
    transform: translate3d(calc(-1 * var(--fixed-control-size) - 12px), -50%, 0);
    opacity: 0;
    pointer-events: none;
}

.accompaniment-settings-drawer__tab {
    pointer-events: auto;
    border: none;
    border-radius: 0 12px 12px 0;
    width: var(--fixed-control-size);
    min-width: var(--fixed-control-size);
    height: calc(var(--fixed-control-size) * 1.5);
    min-height: calc(var(--fixed-control-size) * 1.5);
    padding: 8px 2px;
    background-color: var(--bg-color);
    color: var(--text-color);
    box-shadow: var(--neumorphism-shadow);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    writing-mode: vertical-rl;
    text-orientation: upright;
    letter-spacing: 0.1em;
    font-size: 10px;
    font-weight: 700;
    line-height: 1.1;
    box-sizing: border-box;
    transition: background-color 0.2s ease-out;
}

.drum-settings-drawer__tab {
    pointer-events: auto;
    border: none;
    border-radius: 0 12px 12px 0;
    width: var(--fixed-control-size);
    min-width: var(--fixed-control-size);
    height: calc(var(--fixed-control-size) * 1.5);
    min-height: calc(var(--fixed-control-size) * 1.5);
    padding: 8px 2px;
    background-color: var(--bg-color);
    color: var(--text-color);
    box-shadow: var(--neumorphism-shadow);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    writing-mode: vertical-rl;
    text-orientation: upright;
    letter-spacing: 0.1em;
    font-size: 10px;
    font-weight: 700;
    line-height: 1.1;
    box-sizing: border-box;
    transition: background-color 0.2s ease-out;
}

.accompaniment-settings-drawer__tab:hover {
    background-color: var(--hover-color);
}

.drum-settings-drawer__tab:hover {
    background-color: var(--hover-color);
}

.accompaniment-settings-drawer__tab:focus-visible {
    outline: 2px solid rgba(44, 132, 226, 0.7);
    outline-offset: 2px;
}

.drum-settings-drawer__tab:focus-visible {
    outline: 2px solid rgba(44, 132, 226, 0.7);
    outline-offset: 2px;
}

.accompaniment-settings-drawer__tab[aria-expanded="true"] {
    background-color: var(--hover-color);
}

.drum-settings-drawer__tab[aria-expanded="true"] {
    background-color: var(--hover-color);
}

.accompaniment-settings-drawer__panel.rhythm-settings {
    position: absolute;
    left: calc(100% + 10px);
    top: 50%;
    width: min(560px, calc(100vw - 76px));
    max-height: min(74vh, 660px);
    margin: 0;
    opacity: 0;
    overflow: auto;
    pointer-events: none;
    transform: translate(-12px, -50%);
    transition: opacity 0.2s ease-out, transform 0.2s ease-out;
}

.drum-settings-drawer__panel {
    position: absolute;
    left: calc(100% + 10px);
    top: 50%;
    width: min(420px, calc(100vw - 76px));
    max-height: min(74vh, 520px);
    margin: 0;
    opacity: 0;
    overflow: auto;
    pointer-events: none;
    transform: translate(-12px, -50%);
    transition: opacity 0.2s ease-out, transform 0.2s ease-out;
}

.accompaniment-settings-drawer.is-open .accompaniment-settings-drawer__panel.rhythm-settings {
    opacity: 1;
    pointer-events: auto;
    transform: translate(0, -50%);
}

.drum-settings-drawer.is-open .drum-settings-drawer__panel {
    opacity: 1;
    pointer-events: auto;
    transform: translate(0, -50%);
}

.accompaniment-settings-drawer.is-collapsed .accompaniment-settings-drawer__panel.rhythm-settings {
    opacity: 0 !important;
    pointer-events: none !important;
    transform: translate(-12px, -50%) !important;
}

.drum-settings-drawer.is-collapsed .drum-settings-drawer__panel {
    opacity: 0 !important;
    pointer-events: none !important;
    transform: translate(-12px, -50%) !important;
}

.individual-settings-control {
    position: fixed;
    left: 0;
    top: calc(50% + 336px);
    z-index: 977;
    transform: translate3d(0, -50%, 0);
    transition: transform 0.2s ease-out, opacity 0.2s ease-out;
    opacity: 1;
    pointer-events: auto;
}

.individual-settings-control.is-collapsed {
    transform: translate3d(-170px, -50%, 0);
    opacity: 0;
    pointer-events: none;
}

.individual-settings-control__label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-height: 36px;
    padding: 8px 10px;
    border-radius: 0 10px 10px 0;
    font-size: 12px;
    background: var(--bg-color);
    color: var(--text-color);
    box-shadow: var(--neumorphism-shadow);
    cursor: pointer;
    user-select: none;
}

.individual-settings-control__label input[type="checkbox"] {
    width: 16px;
    height: 16px;
    margin: 0;
}

.scale-overview-drawer.is-collapsed {
    transform: translate3d(calc(-1 * var(--fixed-control-size) - 12px), -50%, 0);
    opacity: 0;
    pointer-events: none;
}

.scale-overview-drawer__tab {
    pointer-events: auto;
    border: none;
    border-radius: 0 12px 12px 0;
    width: var(--fixed-control-size);
    min-width: var(--fixed-control-size);
    height: calc(var(--fixed-control-size) * 1.5);
    min-height: calc(var(--fixed-control-size) * 1.5);
    padding: 8px 2px;
    background-color: var(--bg-color);
    color: var(--text-color);
    box-shadow: var(--neumorphism-shadow);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    writing-mode: vertical-rl;
    text-orientation: upright;
    letter-spacing: 0.1em;
    font-size: 10px;
    font-weight: 700;
    line-height: 1.1;
    box-sizing: border-box;
    transition: background-color 0.2s ease-out;
}

.scale-overview-drawer__tab:hover {
    background-color: var(--hover-color);
}

.scale-overview-drawer__tab:focus-visible {
    outline: 2px solid rgba(44, 132, 226, 0.7);
    outline-offset: 2px;
}

.scale-overview-drawer__tab[aria-expanded="true"] {
    background-color: var(--hover-color);
}

.scale-overview-drawer__panel {
    position: absolute;
    left: calc(100% + 10px);
    top: 50%;
    width: min(560px, calc(100vw - 76px));
    max-height: min(72vh, 560px);
    opacity: 0;
    overflow: hidden;
    pointer-events: none;
    transform: translate(-12px, -50%);
    background-color: var(--bg-color);
    color: var(--text-color);
    border-radius: 14px;
    box-shadow: var(--neumorphism-shadow);
    border: 1px solid rgba(120, 130, 150, 0.26);
    transition: opacity 0.2s ease-out, transform 0.2s ease-out;
}

.scale-overview-drawer.is-collapsed .scale-overview-drawer__panel {
    opacity: 0 !important;
    pointer-events: none !important;
    transform: translate(-12px, -50%) !important;
}

.scale-overview-drawer.is-open .scale-overview-drawer__panel {
    opacity: 1;
    pointer-events: auto;
    transform: translate(0, -50%);
}

.scale-overview-drawer__panel-inner {
    max-height: inherit;
    overflow: auto;
    padding: 12px;
}

body.theme--dark .scale-overview-drawer__panel {
    border-color: var(--border-dark);
}

body.theme--dark .accompaniment-settings-drawer__panel.rhythm-settings {
    border: 1px solid var(--border-dark);
}

body.theme--dark .drum-settings-drawer__panel {
    border: 1px solid var(--border-dark);
}

body.theme--dark .individual-settings-control__label {
    border: 1px solid var(--border-dark);
}

#scale-overview {
    overflow-x: auto;
    margin: 0;
    padding-right: 4px;
}

/* テーブル全体のスタイル */
#scale-overview table {
    width: 100%;
    min-width: 460px;
    border-collapse: collapse;
    margin: 0;
    background: var(--bg-color);
    border-radius: 12px;
    box-shadow: var(--neumorphism-shadow);
    word-break: keep-all;
}

/* ヘッダーのスタイル */
#scale-overview th {
    background: var(--bg-color);
    padding: 12px;
    text-align: center;
    font-weight: bold;
    color: var(--text-color);
    box-shadow: inset var(--neumorphism-light)
        /* , inset var(--neumorphism-dark); */
}

/* セルのスタイル */
#scale-overview td {
    background: var(--bg-color);
    padding: 10px;
    text-align: center;
    color: var(--text-color);
    box-shadow: inset var(--neumorphism-light)
        /* , inset var(--neumorphism-dark); */
}

/* 行間隔 */
#scale-overview tr:not(:last-child) td {
    border-bottom: 1px solid rgba(200, 200, 200, 0.2);
    /* 明るいテーマ用 */
}

/* ダークテーマ対応 */
body.theme--dark #scale-overview tr:not(:last-child) td {
    border-bottom: 1px solid rgba(50, 50, 50, 0.5);
    /* ダークテーマ用 */
}

@media (max-width: 768px) {
    :root {
        --fixed-control-size: 44px;
    }

    .scale-overview-drawer {
        top: 50%;
    }

    .accompaniment-settings-drawer {
        top: calc(50% + 96px);
    }

    .drum-settings-drawer {
        top: calc(50% + 184px);
    }

    .individual-settings-control {
        top: calc(50% + 272px);
    }

    .scale-overview-drawer__tab {
        font-size: 10px;
    }

    .scale-overview-drawer__panel {
        left: calc(100% + 8px);
        width: min(340px, calc(100vw - 64px));
        max-height: min(68vh, 500px);
    }

    .accompaniment-settings-drawer__panel.rhythm-settings {
        left: calc(100% + 8px);
        width: min(340px, calc(100vw - 64px));
        max-height: min(68vh, 520px);
    }

    .drum-settings-drawer__panel {
        left: calc(100% + 8px);
        width: min(320px, calc(100vw - 64px));
        max-height: min(60vh, 420px);
    }

    .individual-settings-control__label {
        min-height: 34px;
        padding: 7px 9px;
        font-size: 11px;
    }

    #scale-overview table {
        min-width: 420px;
    }
}

/* 開閉ボタンのスタイル */
.toggle-footer-controls {
    position: fixed;
    left: 12px;
    bottom: 12px;
    width: 44px;
    height: 44px;
    background-color: var(--bg-color);
    border-radius: 50%;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    z-index: 1110;
    transition: transform 0.2s ease-out, background-color 0.2s ease-out, opacity 0.2s ease-out;
}

/* 開閉ボタンのホバー効果 */
.toggle-footer-controls:hover {
    background-color: var(--hover-color);
    color: var(--bg-color);
}

/* 下部固定ラップ用コンテナ */
.footer-controls {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: var(--bg-color);
    box-shadow: 0 -2px 5px rgba(0, 0, 0, 0.1);
    padding: 10px 20px;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    z-index: 100;
    gap: 10px;

    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
    transition: transform 0.26s ease-out, opacity 0.2s ease-out;
}


/* 折りたたみ状態 */
.footer-controls.is-collapsed {
    transform: translateY(calc(100% - 12px));
    opacity: 0;
    pointer-events: none;
}

.footer-controls.is-expanded {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
}

/* 旧クラス互換 */
.footer-controls.hidden {
    transform: translateY(calc(100% - 12px));
    opacity: 0;
    pointer-events: none;
}

/* コード進行概要のスクロール */
#overview-container {
    overflow-x: auto;
    padding-bottom: 24px;
}

#sequence-overview {
    width: max-content;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 10px;
}

/* 各小節のスタイル */
.sequence-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 10px;
    min-width: 120px;
    text-align: center;
    background-color: var(--bg-color);
    border-radius: 10px;
    box-shadow: var(--neumorphism-shadow);
}

/* 再生・停止ボタン */
#control-buttons {
    display: flex;
    flex: 1 1 auto;
    gap: 10px;
    justify-content: center;
    width: 100%;
    background-color: var(--bg-color);
    box-shadow: var(--neumorphism-shadow);
    z-index: 1000;
}

/* 各ボタンのスタイル */
#control-buttons button {
    width: 100%;
    padding: 10px 20px;
    border: none;
    background-color: var(--bg-color);
    border-radius: 10px;
    box-shadow: var(--neumorphism-shadow);
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s, box-shadow 0.3s;
}

#control-buttons button:hover {
    background-color: var(--hover-color);
}

#control-buttons button:active {
    background-color: var(--active-color);
    box-shadow: inset var(--neumorphism-light), inset var(--neumorphism-dark);
}

/* 固定ボタンのスタイル */
.fixed-controls {
    position: fixed;
    right: 10vh;
    bottom: 26vh;
    display: flex;
    flex-direction: column;
    gap: 10px;
    align-items: center;
    z-index: 1000;
}

.fixed-controls__play-stack {
    display: flex;
    flex-direction: column;
    gap: 8px;
    align-items: stretch;
    width: var(--fixed-control-size);
}

.notice-toggle-button {
    font-size: 22px;
    line-height: 1;
}

.notice-toggle-button[aria-expanded="true"] {
    background-color: var(--hover-color);
    transform: translateY(-1px);
}

.floating-news-panel {
    position: absolute;
    right: calc(100% + 12px);
    top: 0;
    bottom: auto;
    width: min(320px, calc(100vw - 96px));
    min-width: 220px;
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    pointer-events: none;
    transform: translateX(10px);
    background-color: var(--bg-color);
    color: var(--text-color);
    border-radius: 12px;
    box-shadow: var(--neumorphism-shadow);
    z-index: 2;
    transition: opacity 0.22s ease-out, transform 0.22s ease-out, max-height 0.22s ease-out;
}

.floating-news-panel.is-open {
    max-height: min(300px, 52vh);
    opacity: 1;
    pointer-events: auto;
    transform: translateX(0);
}

.floating-news-panel::after {
    content: "";
    position: absolute;
    top: 16px;
    right: -7px;
    width: 0;
    height: 0;
    border-top: 7px solid transparent;
    border-bottom: 7px solid transparent;
    border-left: 7px solid var(--bg-color);
}

.floating-news-panel__inner {
    position: relative;
    padding: 12px 12px 12px;
}

.floating-news-panel__title {
    margin: 0 0 8px;
    font-size: 13px;
    font-weight: 700;
}

.floating-news-panel__pager {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    min-height: 40px;
    margin-top: 14px;
    padding-top: 10px;
    border-top: 1px solid rgba(120, 130, 150, 0.2);
    pointer-events: auto;
}

.fixed-controls .floating-news-panel__pager-button {
    position: static;
    border: none;
    border-radius: 8px;
    width: 36px;
    height: 36px;
    min-height: 36px;
    padding: 0;
    font-size: 17px;
    font-weight: 700;
    background: var(--bg-color);
    color: var(--text-color);
    box-shadow: var(--neumorphism-shadow);
    cursor: pointer;
    pointer-events: auto;
    transform: none;
    transition: none;
}

.floating-news-panel__pager-button:disabled {
    opacity: 0.45;
    cursor: default;
}

.fixed-controls .floating-news-panel__pager-button:hover,
.fixed-controls .floating-news-panel__pager-button:active {
    transform: none;
    background-color: var(--bg-color);
    box-shadow: var(--neumorphism-shadow);
}

.floating-news-panel__page-label {
    font-size: 12px;
    font-weight: 700;
    text-align: center;
    pointer-events: auto;
    min-width: 56px;
}

.floating-news-panel__date {
    display: inline-block;
    margin: 0 0 10px;
    padding: 3px 10px;
    font-size: 12px;
    font-weight: 700;
    border-radius: 999px;
    background: rgba(120, 130, 150, 0.12);
}

.floating-news-panel__list {
    margin: 0;
    padding: 0;
    max-height: 170px;
    overflow-y: auto;
}

.floating-news-panel__list li {
    list-style: disc;
    margin-left: 18px;
    font-size: 13px;
    line-height: 1.45;
}

.floating-news-panel__list li+li {
    margin-top: 6px;
}

@media (min-width: 1630px) {
    .fixed-controls {
        right: 22%;
    }
}

.fixed-controls__button {
    width: var(--fixed-control-size);
    min-width: var(--fixed-control-size);
    height: var(--fixed-control-size);
    min-height: var(--fixed-control-size);
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    border-radius: 50%;
    font-size: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-color);
    box-shadow: var(--neumorphism-shadow);
    border: none;
    cursor: pointer;
    transition: transform 0.2s, background-color 0.2s;
    text-align: center;
}

.fixed-controls__button:hover {
    transform: scale(1.1);
    background-color: var(--hover-color);
}

.fixed-controls__button:active {
    background-color: var(--active-color);
    box-shadow: inset var(--neumorphism-light), inset var(--neumorphism-dark);
}

#generateButton.fixed-controls__button {
    height: calc(var(--fixed-control-size) * 1.32);
    min-height: calc(var(--fixed-control-size) * 1.32);
    border-radius: 14px;
    writing-mode: vertical-rl;
    text-orientation: mixed;
    white-space: normal;
    word-break: keep-all;
    font-size: 11px;
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: 0;
    padding: 8px 4px;
}

/* スマートフォン専用スタイル */
@media (max-width: 768px) {
    .fixed-controls {
        right: 10px;
        bottom: 28vh;
    }

    .fixed-controls__play-stack {
        gap: 6px;
    }

    .fixed-controls__button {
        font-size: 18px;
    }

    #generateButton.fixed-controls__button {
        height: calc(var(--fixed-control-size) * 1.26);
        min-height: calc(var(--fixed-control-size) * 1.26);
        font-size: 10px;
        line-height: 1.1;
        padding: 6px 3px;
    }

    .floating-news-panel {
        right: calc(100% + 8px);
        width: min(300px, calc(100vw - 92px));
        min-width: 210px;
    }

    #playAllButton::after,
    #stopAllButton::after,
    #generateButton::after {
        content: none;
    }
}

/* スマートフォン向け調整 */
@media (max-width: 768px) {
    #control-buttons button {
        font-size: 14px;
        padding: 8px 16px;
    }
}

.bgm-form-group {
    width: 100%;
    max-width: 800px;
    padding: 0px 0px;
    margin: 0 4% 0 0px;
    text-align: left;
}

.drum-settings-drawer__panel.bgm-form-group {
    width: min(420px, calc(100vw - 76px));
    max-width: none;
    margin: 0;
}

@media (max-width: 650px) {
    .drum-settings-drawer__panel.bgm-form-group {
        width: min(320px, calc(100vw - 64px));
    }
}

@media (max-width: 430px) {
    .floating-news-panel {
        right: calc(100% + 6px);
        width: min(260px, calc(100vw - 86px));
        max-height: min(260px, 48vh);
    }
}

.drum-form-group {
    max-width: 320px;
}

.drum-form-group.section-accordion {
    --accordion-max-height: 240px;
    margin-top: 2px;
    padding: 10px 12px;
    border-radius: 12px;
    border: 1px solid rgba(120, 130, 150, 0.25);
    background: linear-gradient(180deg, rgba(120, 130, 150, 0.1) 0%, rgba(120, 130, 150, 0.04) 100%);
}

.drum-form-group__header {
    align-items: center;
}

.drum-form-group__header-text {
    min-width: 0;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
}

.drum-form-group__title {
    font-weight: 700;
    font-size: 14px;
    line-height: 1.3;
}

.drum-form-group__body {
    display: grid;
    gap: 8px;
    padding-top: 8px;
}

.drum-form-group__body #drumPatternName {
    font-size: 12px;
    line-height: 1.4;
    opacity: 0.82;
}

.playback-target-form-group {
    max-width: 460px;
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.playback-target-form-group__label {
    font-weight: 600;
}

.playback-target-option {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    white-space: nowrap;
}

.drum-toggle-label {
    display: flex;
    align-items: center;
    gap: 6px;
}

.bgm-form-group input[type="range"] {
    width: 100%;
    appearance: none;
    height: 5px;
    background: #ddd;
    border-radius: 5px;
    outline: none;
}

.bgm-form-group input[type="range"]::-webkit-slider-thumb {
    appearance: none;
    width: 20px;
    height: 20px;
    background: #888;
    border-radius: 50%;
    cursor: pointer;
}

.bgm-form-group.disabled {
    opacity: 0.5;
    /* 不透明度を下げて無効化を視覚化 */
    pointer-events: none;
    /* ユーザーからの操作を無効にする */
}

input[type="range"]:disabled {
    background: #ccc;
    /* 無効化された状態を示す背景色 */
    cursor: not-allowed;
    /* カーソルを「禁止」アイコンに変更 */
}

.beat-indicator {
    display: flex;
    justify-content: center;
    gap: 18px;
    margin: 0;
}

/* スマートフォン向け調整 */
@media (max-width: 768px) {
    .bgm-form-group {
        margin: auto;
    }

    .drum-form-group {
        max-width: 800px;
    }

    .beat-indicator {
        gap: 18x;
        margin: auto;
    }
}

.play-all-button {
    width: 100%;
    margin: 10px 0;
    padding: 10px 20px;
    font-size: 16px;
    color: var(--text-color);
    background-color: var(--bg-color);
    border: none;
    border-radius: 10px;
    box-shadow: var(--neumorphism-shadow);
    cursor: pointer;
    transition: box-shadow 0.3s, transform 0.2s;
}

.play-all-button:hover {
    box-shadow: 4px 4px 10px rgba(0, 0, 0, 0.2), -4px -4px 10px rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.play-all-button:active {
    box-shadow: inset 4px 4px 8px rgba(0, 0, 0, 0.2), inset -4px -4px 8px rgba(255, 255, 255, 0.1);
    transform: translateY(1px);
}

/* ダークテーマ対応 */
body.theme--dark .play-all-button {
    color: var(--text-color);
    background-color: var(--bg-sub-dark);
    border: 1px solid var(--border-dark);
}

body.theme--dark .drum-form-group.section-accordion {
    border-color: var(--border-dark);
    background: var(--bg-sub-dark);
}

body.theme--dark .play-all-button:hover {
    box-shadow: 0 5px 12px rgba(0, 0, 0, 0.34);
}

@media (max-width: 1060px) {
    .footer-controls {
        justify-content: space-between;
    }
}

/* 再生中の小節を強調するスタイル */
.sequence-item.active {
    background-color: rgba(0, 122, 255, 0.2);
    box-shadow: 0 0 10px rgba(0, 122, 255, 0.2),
        0 0 00px rgba(0, 122, 255, 0.2),
        inset 0 0 0px rgba(0, 122, 255, 0.2);
    transition: background-color 0.3s, box-shadow 0.3s;
    border-radius: 10px;
}

/* 基本スタイル */
.beat-circle {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--bg-color);
    box-shadow: 6px 6px 10px var(--neumorphism-shadow), -6px -6px 10px rgba(255, 255, 255, 0.7);
    transition: background-color 0.3s, box-shadow 0.3s, transform 0.2s;
}

/* 点灯時（青い光） */
.beat-circle.active {
    background-color: rgba(0, 122, 255, 0.8);
    box-shadow: 0 0 20px rgba(0, 122, 255, 0.8), 0 4px 6px rgba(0, 0, 0, 0.2);
    transform: scale(1.2);
}

/* MIDI生成ボタンの微調整 */
#generateButton.fixed-controls__button:focus-visible {
    outline: 2px solid rgba(120, 130, 150, 0.7);
    outline-offset: 2px;
}

/* モバイル対応 */
@media (max-width: 600px) {
    .news-pager {
        grid-template-columns: 1fr 1fr;
        gap: 8px;
    }

    .news-page-label {
        grid-column: 1 / -1;
        order: -1;
    }

    .news-pager__button {
        width: 100%;
    }

    .form__select {
        margin: 8px 0 4px;
    }

    .rhythm-settings {
        padding: 12px;
        margin-bottom: 12px;
    }

    .rhythm-settings h3 {
        margin-bottom: 8px;
        font-size: 15px;
    }

    .rhythm-mode-group {
        gap: 8px;
        margin-bottom: 8px;
    }

    .rhythm-mode-group label {
        display: inline-flex;
        align-items: center;
        gap: 4px;
    }

    .part-settings-scroll {
        margin: 0;
        padding: 0;
    }

    .part-settings-card {
        flex-basis: auto;
    }

    .part-setting-card__header {
        margin-bottom: 12px;
    }

    .part-setting-card__title {
        font-size: 16px;
    }

    .part-setting-card__body {
        gap: 12px;
    }

    .part-setting-card__grid {
        grid-template-columns: 1fr;
        gap: 9px;
    }

    .part-setting-card__field--wide {
        grid-column: auto;
    }

    .part-setting-group {
        gap: 8px;
    }

    .part-setting-card__actions {
        margin-top: 14px;
        padding-top: 12px;
        gap: 10px;
    }

    #rhythmGlobalPattern,
    #globalInstrument,
    #globalAccompanimentPattern,
    #globalPianoOctave,
    #globalBassPattern,
    #globalBassOctave,
    #globalStringsPattern,
    #globalStringsOctave {
        margin: 6px 0 8px;
    }

    #applyRhythmToAllButton,
    #applyAccompanimentToAllButton,
    #randomAccompanimentPatternButton,
    #applyPianoOctaveToAllButton,
    #applyBassPatternToAllButton,
    #randomBassPatternButton,
    #applyBassOctaveToAllButton,
    #applyStringsPatternToAllButton,
    #randomStringsPatternButton,
    #applyStringsOctaveToAllButton,
    #randomProgressionButton {
        margin-top: 0;
        min-height: 44px;
    }

    #scale-overview {
        margin-bottom: 0;
    }

    #sequencer {
        display: flex;
        overflow-x: auto;
        padding: 6px 8px 0;
        margin-bottom: 8px;
        gap: 20px;
    }

    .sequence-row {
        flex-direction: row;
        /* flex-wrap: wrap; */
        flex-wrap: nowrap;
        gap: 20px;
        justify-content: space-around;
    }

    .measure {
        max-width: 100%;
        width: 100%;
        padding: 0 10px;
    }

    .measure h3 {
        margin: 10px 0 0;
    }

    .measure-nondiatonic {
        margin: 8px 0 4px;
        font-size: 11px;
    }

    .play-button {
        width: 100%;
        margin: 12px 0 16px;
        padding: 14px 0px;
    }
}

/* タブレット対応（2カラム表示） */
@media (min-width: 601px) and (max-width: 1024px) {
    .sequence-row {
        flex-direction: row;
        /* flex-wrap: wrap; */
        flex-wrap: nowrap;
        gap: 20px;
        justify-content: space-around;
    }

    .measure {
        flex: 1 1 45%;
        max-width: 45%;
    }
}

/* PC対応（4カラム表示） */
@media (min-width: 1025px) {
    .sequence-row {
        flex-direction: row;
        flex-wrap: nowrap;
        gap: 20px;
        justify-content: center;
    }

    .measure {
        flex: 1 1 150px;
        max-width: 200px;
    }
}

/* モーダルの背景 */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: rgba(0, 0, 0, 0.5);
    visibility: hidden;
    opacity: 0;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    z-index: 1000;
}

/* モーダルが表示されているとき */
.modal[aria-hidden="false"] {
    visibility: visible;
    opacity: 1;
}

/* モーダルの中身 */
.modal-content {
    background-color: var(--bg-color);
    padding: 20px;
    border-radius: 20px;
    box-shadow: var(--neumorphism-shadow);
    text-align: center;
    max-width: 400px;
    width: 90%;
}

/* モーダルのタイトル */
.modal-content h2 {
    font-size: 20px;
    color: var(--text-color);
    margin-bottom: 10px;
}

/* モーダルの説明文 */
.modal-content p {
    font-size: 16px;
    color: var(--text-color);
    margin-bottom: 20px;
}

.midi-export-targets {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 8px 12px;
    margin-bottom: 16px;
}

.midi-export-targets__label {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-color);
}

.midi-export-target-option {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--text-color);
}

/* ボタンのラッパー */
.modal-buttons {
    display: flex;
    justify-content: space-between;
    gap: 10px;
}

/* ボタンのスタイル */
.btn {
    flex: 1;
    padding: 10px 15px;
    font-size: 16px;
    font-weight: bold;
    border: none;
    border-radius: 10px;
    background-color: var(--bg-color);
    box-shadow: var(--neumorphism-shadow);
    color: var(--text-color);
    cursor: pointer;
    transition: background-color 0.3s, transform 0.2s;
}

/* ボタンのホバー時 */
.btn:hover {
    background-color: var(--hover-color);
    transform: scale(1.05);
}

/* キャンセルボタン */
.btn-cancel {
    background-color: #e0e0e0;
    /* box-shadow: var(--neumorphism-light), var(--neumorphism-dark); */
}

.btn-cancel:hover {
    background-color: #d0d0d0;
}

/* ダークテーマ対応 */
body.theme--dark .modal-content {
    background-color: var(--bg-card-dark);
    border: 1px solid var(--border-dark);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.35);
}

body.theme--dark .btn-cancel {
    background-color: var(--bg-sub-dark);
    border: 1px solid var(--border-dark);
}

body.theme--dark .btn:hover {
    background-color: #252b34;
}

.note-wrap {
    padding: 0 16px 24px;
}

.note-wrap br {
    display: none;
}

.note-wrap .note {
    display: block;
    line-height: 1.5;
    margin-top: 0.5em;
}

.note-wrap .note:first-child {
    margin-top: 0;
}

.note-wrap .note--alert {
    color: #c0392b;
    font-weight: 400;
}

body.theme--dark .note-wrap .note--alert {
    color: #ff8a80;
}

/* 特徴セクションのスタイル */
#feature {
    background: var(--bg-color);
    padding: var(--section-padding);
    box-shadow: var(--neumorphism-shadow);
    border-radius: var(--border-radius);
    max-width: var(--max-width);
    width: 100%;
    margin-bottom: 24px;
}

#feature h3 {
    text-align: center;
    font-size: 1.2em;
}

#feature ul {
    margin-top: 10px;
}

#feature ul li {
    /* list-style: disc; */
    margin-bottom: 10px;
    font-size: 1em;
    font-weight: bold;
    line-height: 1.6;
    padding: 10px;
    /* 内側の余白 */
    border-radius: var(--border-radius);
    background: var(--bg-color);
    box-shadow: var(--neumorphism-light), var(--neumorphism-dark);
}

/* 使い方セクションのスタイル */
#how-to-use {
    background: var(--bg-color);
    padding: var(--section-padding);
    box-shadow: var(--neumorphism-shadow);
    border-radius: var(--border-radius);
    max-width: var(--max-width);
    width: 100%;
    margin-bottom: 24px;
}

/* セクションタイトル */
#how-to-use h2 {
    font-size: 1.8rem;
    text-align: center;
    margin-bottom: 16px;
    color: var(--text-color);
}

/* 手順リストのスタイル */
#how-to-use ol {
    padding-left: 4px;
    margin-bottom: 16px;
    counter-reset: step-counter;
}

/* 各リスト項目のスタイル */
#how-to-use ol li {
    margin-bottom: 12px;
    position: relative;
    padding-left: 36px;
    color: var(--text-color);
}

/* 番号のスタイル */
#how-to-use ol li::before {
    content: counter(step-counter);
    counter-increment: step-counter;
    position: absolute;
    left: 0;
    top: 0;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background-color: rgba(255, 215, 0, 0.8);
    /* 明るい黄色 */
    color: #fff;
    font-weight: bold;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--neumorphism-shadow);
}

/* 重要な説明文のスタイル */
#how-to-use small {
    display: block;
    margin-top: 16px;
    font-size: 0.85rem;
    text-align: center;
    color: var(--text-color);
    opacity: 0.8;
}

/* 手順内の改行を整える */
#how-to-use li br {
    display: block;
    margin-bottom: 8px;
}

.data-specifications {
    padding: 6px 0 0;
}

.data-specifications h3 {
    font-size: 1.1em;
}

#about-music-tech {
    background: var(--bg-color);
    padding: var(--section-padding);
    box-shadow: var(--neumorphism-shadow);
    border-radius: var(--border-radius);
    max-width: var(--max-width);
    width: 100%;
    margin-bottom: 24px;
}

#daw-software {
    background: var(--bg-color);
    padding: var(--section-padding);
    box-shadow: var(--neumorphism-shadow);
    border-radius: var(--border-radius);
    max-width: var(--max-width);
    width: 100%;
    margin-bottom: 24px;
}

#daw-software h4 {
    margin-bottom: 8px;
    font-size: 1em;
    color: var(--text-color);
    text-align: center;
}

#daw-software p {
    margin-bottom: 10px;
    font-size: 1em;
    line-height: 1.6;
    color: var(--text-color);
}

#daw-software p.daw-software__p {
    margin-bottom: 0px;
}

#daw-software small.daw-software__small {
    display: block;
    margin-bottom: 8px;
}

#daw-software ul li {
    margin-bottom: 20px;
    padding: 20px;
    background: var(--bg-color);
    border-radius: var(--border-radius);
    box-shadow: var(--neumorphism-shadow);
}

#daw-software ul li h3 {
    margin-top: 0;
    margin-bottom: 10px;
    font-size: 1.4em;
    color: var(--text-color);
}


/* 全体のコンテナ */
.shoppingButton-container {
    display: flex;
    flex-direction: column;
    gap: 15px;
    align-items: center;
    width: 100%;
    /* padding: 20px; */
    margin-bottom: 20px;
    text-align: center;
}

/* ニューモーフィズムボタンスタイル */
.shopping-button {
    padding: 10px;
    width: 100%;
    font-size: 15px;
    border-radius: var(--border-radius);
    border: 1px solid #ccc;
    background-color: var(--bg-color);
    box-shadow: var(--neumorphism-light), var(--neumorphism-dark);
    transition: box-shadow 0.3s ease-in-out;
}

/* ホバー効果 */
.shopping-button:hover {
    color: #3b3062;
    /* テキストの色を変更 */
    background: #FFF;
    /* 少し濃い色に変更 */
    box-shadow: inset 4px 4px 8px rgba(0, 0, 0, 0.2),
        inset -4px -4px 8px rgba(255, 255, 255, 0.7);
    /* 凹凸の方向を反転 */
}

/* セクション全体のスタイル */
#code-progressions {
    margin: 20px 0;
    padding: 20px;
    background: var(--bg-color);
    border-radius: 12px;
    box-shadow: var(--neumorphism-shadow);
}

/* 個々のセクションアイテム */
.section-item {
    margin-bottom: 20px;
    padding: 10px;
    border: 1px solid rgba(200, 200, 200, 0.2);
    border-radius: 8px;
}

/* 見出し */
.section-item h2,
.section-item h3 {
    margin-bottom: 10px;
    color: var(--text-color);
    font-weight: bold;
    font-size: 1.5rem;
}

/* コンテンツ全体 */
.section-item .content {
    padding: 10px;
    background: var(--bg-color);
    border-radius: 8px;
    box-shadow: var(--neumorphism-shadow);
}

/* テーブルのスタイル */
.section-item table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 10px;
}

.section-item th,
.section-item td {
    padding: 10px;
    border-bottom: 1px solid rgba(200, 200, 200, 0.2);
    text-align: left;
    font-size: 1rem;
}

/* details タグのトグルサマリーのスタイル */
.toggle-summary {
    cursor: pointer;
    font-weight: bold;
    color: #007BFF;
    display: flex;
    align-items: center;
    padding: 0.8em;
    border-radius: 12px;
    background-color: var(--bg-color);
    box-shadow: var(--neumorphism-light), var(--neumorphism-dark);
    transition: background-color 0.3s, box-shadow 0.3s;
}

.toggle-summary:hover {
    background-color: var(--bg-color);
    box-shadow: inset var(--neumorphism-light), inset var(--neumorphism-dark);
    color: #0056b3;
    /* ホバー時の色を濃くして視覚的にフィードバック */
}

.toggle-summary::before {
    content: '▶';
    margin-right: 5px;
    transition: transform 0.2s ease, color 0.3s ease;
}

details[open] .toggle-summary::before {
    /* content: '▼'; */
    transform: rotate(90deg);
    color: #0056b3;
    /* 開いているときに色を変える */
}

details[open] .toggle-summary {
    color: #0056b3;
    box-shadow: inset var(--neumorphism-light), inset var(--neumorphism-dark);
}

/* ダークテーマ対応 */
body.theme--dark .toggle-summary {
    background-color: var(--bg-card-dark);
    color: var(--accent-soft-dark);
    box-shadow: var(--neumorphism-shadow);
    border: 1px solid var(--border-dark);
}

body.theme--dark .toggle-summary:hover {
    background-color: #222831;
    box-shadow: inset var(--neumorphism-light), inset var(--neumorphism-dark);
    color: #9ab1cd;
    /* ダークテーマホバー時の色 */
}

body.theme--dark details[open] .toggle-summary {
    color: #9ab1cd;
}

body.theme--dark details[open] .toggle-summary::before {
    color: #9ab1cd;
}

/* スマートフォン対応のレスポンシブ調整 */
@media (max-width: 600px) {
    .toggle-summary {
        font-size: 0.9em;
        padding: 0.6em;
    }
}

/* レスポンシブ: スマートフォン (最大幅600px) */
@media (max-width: 600px) {
    #code-progressions {
        padding: 15px;
    }

    .section-item {
        margin-bottom: 15px;
        padding: 10px;
    }

    .section-item h2,
    .section-item h3 {
        font-size: 1.2rem;
    }

    .section-item table {
        font-size: 0.9rem;
    }

    .section-item th,
    .section-item td {
        padding: 8px;
    }
}

/* レスポンシブ: タブレット (601px - 1024px) */
@media (min-width: 601px) and (max-width: 1024px) {
    #code-progressions {
        padding: 20px;
    }

    .section-item {
        margin-bottom: 20px;
        padding: 15px;
    }

    .section-item h2,
    .section-item h3 {
        font-size: 1.4rem;
    }

    .section-item table {
        font-size: 1rem;
    }

    .section-item th,
    .section-item td {
        padding: 10px;
    }
}

/* レスポンシブ: 大画面 (1025px以上) */
@media (min-width: 1025px) {
    #code-progressions {
        padding: 25px;
    }

    .section-item {
        margin-bottom: 25px;
        padding: 20px;
    }

    .section-item h2,
    .section-item h3 {
        font-size: 1.6rem;
    }

    .section-item table {
        font-size: 1.1rem;
    }

    .section-item th,
    .section-item td {
        padding: 12px;
    }
}

#about-site {
    background: var(--bg-color);
    padding: var(--section-padding);
    box-shadow: var(--neumorphism-shadow);
    border-radius: var(--border-radius);
    max-width: var(--max-width);
    width: 100%;
    margin-bottom: 24px;
}

#about-site p {
    margin-top: 20px;
}

#terms {
    background: var(--bg-color);
    padding: var(--section-padding);
    box-shadow: var(--neumorphism-shadow);
    border-radius: var(--border-radius);
    max-width: var(--max-width);
    width: 100%;
    margin-bottom: 24px;
}

#contact {
    background: var(--bg-color);
    padding: var(--section-padding);
    box-shadow: var(--neumorphism-shadow);
    border-radius: var(--border-radius);
    max-width: var(--max-width);
    width: 100%;
    margin-bottom: 24px;
    color: var(--text-color);
}

#contact h2 {
    font-size: 1.8em;
    margin-bottom: 15px;
    color: var(--text-color);
    text-align: center;
}

#contact p {
    text-align: center;
    color: var(--text-color);
}

/* お問い合わせフォームのスタイル */
#contact form {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-top: 20px;
}

#contact form label {
    font-weight: bold;
    color: var(--text-color);
    margin-bottom: 5px;
}

#contact form input,
#contact form select,
#contact form textarea {
    color: var(--text-color);
    padding: 10px;
    font-size: 1em;
    border-radius: var(--border-radius);
    border: 1px solid #ccc;
    background-color: var(--bg-color);
    box-shadow: var(--neumorphism-light), var(--neumorphism-dark);
    transition: box-shadow 0.3s ease-in-out;
}

#contact form input:focus,
#contact form select:focus,
#contact form textarea:focus {
    outline: none;
    box-shadow: 0 0 10px rgba(0, 123, 255, 0.5);
}

#contact form textarea {
    resize: none;
    height: 100px;
}

#contact form button,
#contact form input[type="submit"] {
    padding: 10px 15px;
    font-size: 1em;
    font-weight: bold;
    color: #fff;
    background-color: rgb(0 166 237);
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    box-shadow: var(--neumorphism-light), var(--neumorphism-dark);
    transition: background-color 0.3s ease-in-out, box-shadow 0.3s ease-in-out;
}

#contact form button:hover,
#contact form input[type="submit"]:hover {
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
}

/* details タグのスタイル */
#contact details {
    margin-top: 20px;
    padding: 10px;
    background-color: var(--bg-color);
    border-radius: var(--border-radius);
    box-shadow: var(--neumorphism-shadow);
}

#contact details summary {
    cursor: pointer;
    font-weight: bold;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

#contact details summary span {
    font-size: 1.5em;
    font-weight: bold;
    color: var(--text-color);
    transition: transform 0.2s ease-in-out;
    margin-right: 16px;
}

/* Flash メッセージのスタイル */
.flash-message {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
    padding: 10px;
    border-radius: var(--border-radius);
    margin-bottom: 15px;
    text-align: center;
    box-shadow: var(--neumorphism-light), var(--neumorphism-dark);
}

.flash-message p {
    margin-bottom: 0;
    word-break: keep-all;
}
.flash-message--error {
    background-color: #f8d7da;
    color: #842029;
    border: 1px solid #f5c2c7;
}

.contact-errors {
    margin: 10px 0 0 1.2em;
    text-align: left;
}

.contact-errors li {
    list-style: disc;
    margin-bottom: 6px;
}

.contact-honeypot {
    position: absolute !important;
    left: -9999px !important;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

/* アクティブ効果（クリック時） */
.shopping-button:active {
    box-shadow: inset 8px 8px 15px rgba(0, 0, 0, 0.3),
        inset -8px -8px 15px rgba(255, 255, 255, 0.5);
}

.info-footer {
    margin: 30px 0 0;
    font-size: small;
    text-align: center;
}

.info-footer .legal {
    display: flex;
    justify-content: center;
    margin-bottom: 16px;
}

.info-footer .legal button {
    font-size: 13px;
    margin: 0 8px 0;
    color: var(--text-color);
    background-color: var(--bg-color);
    border: 0;
}

/* 
.info-footer .legal button:first-child::after {
    content: "|";
    font-weight: 500;
    padding-left: 16px;
    color: #111;
} */

/* モーダル全体のスタイル */
.legal-modal {
    display: none;
    /* デフォルトでは非表示 */
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    /* 背景を半透明にする */
    color: var(--text-color);
    background-color: var(--bg-color);
    z-index: 1000;
}

/* モーダルのコンテンツ */
.legal-modal-content {
    position: relative;
    margin: 10% auto;
    /* 上下に余白、中央揃え */
    padding: 20px;
    width: 90%;
    /* モーダルの横幅 */
    max-width: 900px;
    /* 最大幅 */
    max-height: 80vh;
    /* ビューポートの最大高 */
    overflow-y: auto;
    /* はみ出した場合、縦スクロール */
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    text-align: left;
}

.legal-modal-content dd {
    text-indent: 8px;
}

/* 閉じるボタン */
/* .personalInfor-close-button, */
.privacyPolicy-close-button {
    position: sticky;
    display: block;
    top: 0;
    width: 30px;
    margin-left: auto;
    padding: 5px;
    font-size: 1.5em;
    cursor: pointer;
}