/* ============================================================
   ノート選択画面 (縦画面)
   ============================================================ */
#app.portrait-mode #note-hub-screen {
    padding: 0;
    position: relative;
    flex-direction: column;
}

#app.portrait-mode .note-hub-list {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 400px;
    padding: 30px;
    padding-bottom: 230px;
}

#app.portrait-mode .note-hub-list button {
    width: 80%;
}

/* ============================================================
   せってい画面 (縦画面)
   ============================================================ */
#app.portrait-mode #setting-screen {
    padding: 0;
    position: relative;
    flex-direction: column;
}

#app.portrait-mode .setting-list {
    flex: 1;
    overflow-y: auto;
    padding: 20px 30px 40px;
    display: flex;
    flex-direction: column;
    gap: 30px;
}

#app.portrait-mode .setting-item {
    background: rgba(10, 20, 60, 0.75);
    border: 2px solid rgba(80, 110, 210, 0.5);
    border-radius: 12px;
    overflow: hidden;
}

#app.portrait-mode .setting-item-header {
    font-family: var(--font-pixel);
    font-size: 34px;
    color: var(--accent-color);
    padding: 16px 24px;
    background: rgba(80, 110, 210, 0.12);
    border-bottom: 1px solid rgba(80, 110, 210, 0.4);
}

#app.portrait-mode .setting-name-area {
    padding: 20px 24px;
}

#app.portrait-mode .setting-name-input {
    width: 100%;
    box-sizing: border-box;
}

#app.portrait-mode .setting-music-rows {
    display: flex;
    flex-direction: column;
}

#app.portrait-mode .setting-row {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 20px 24px;
    border-bottom: 1px solid rgba(55, 80, 155, 0.15);
}

#app.portrait-mode .setting-row:last-child {
    border-bottom: none;
}

#app.portrait-mode .setting-row-label {
    font-family: var(--font-pixel);
    font-size: 34px;
    color: #a0aabf;
    min-width: 150px;
}

#app.portrait-mode .setting-toggle-group {
    display: flex;
    gap: 8px;
}

#app.portrait-mode .setting-toggle-btn {
    font-family: var(--font-pixel);
    font-size: 32px;
    padding: 12px 28px;
    border-radius: 8px;
    border: 2px solid rgba(55, 80, 155, 0.4);
    background: rgba(30, 40, 80, 1);
    color: #606880;
    cursor: pointer;
    transition: background 0.15s, color 0.15s, border-color 0.15s;
}

/* ON ボタンが選択中 */
#app.portrait-mode .setting-toggle-btn[data-value="on"].active {
    background: linear-gradient(135deg, #1e4a2e, #143520);
    color: #4ade80;
    border-color: #4ade80;
}

/* OFF ボタンが選択中 */
#app.portrait-mode .setting-toggle-btn[data-value="off"].active {
    background: linear-gradient(135deg, #4a1e1e, #351414);
    color: #f87171;
    border-color: #f87171;
}

#app.portrait-mode .setting-row-indent {
    padding-left: 40px;
    background: rgba(0, 0, 0, 0.1);
}

#app.portrait-mode .setting-volume-slider {
    flex: 1;
    height: 10px;
    accent-color: var(--primary-color);
    cursor: pointer;
}

#app.portrait-mode .setting-volume-value {
    font-family: var(--font-pixel);
    font-size: 34px;
    color: var(--accent-color);
    min-width: 70px;
    text-align: right;
}

#app.portrait-mode .setting-backup-area {
    display: flex;
    flex-direction: column;
    gap: 16px;
    padding: 20px 24px;
}

#app.portrait-mode .setting-backup-btn {
    width: 100%;
    font-size: 34px;
    padding: 20px;
}