/* ============================================================
   アイテムノート (縦画面)
   ============================================================ */
#app.portrait-mode #item-note-screen {
    padding: 0;
}

/* ============================================================
   リュック画面 (縦画面)
   ============================================================ */
#app.portrait-mode #bag-screen {
    padding: 0;
    position: relative;
}


#app.portrait-mode .bag-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    padding: 30px;
    flex: 1;
    overflow-y: auto;
    align-content: start;
}

#app.portrait-mode .bag-card {
    background: linear-gradient(145deg, #1d2748, #111830);
    border: 3px solid rgba(55, 80, 155, 0.5);
    border-radius: 16px;
    padding: 24px 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    cursor: pointer;
    gap: 10px;
    transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
    box-shadow: 0 4px 18px rgba(0, 0, 0, 0.55), inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

#app.portrait-mode .bag-card:hover {
    transform: scale(1.03);
    box-shadow: 0 0 20px rgba(79, 172, 254, 0.45), 0 4px 18px rgba(0, 0, 0, 0.55);
    border-color: var(--primary-color);
}

#app.portrait-mode .bag-card--empty {
    opacity: 0.5;
}

#app.portrait-mode .bag-item-img {
    width: 130px;
    height: 130px;
    object-fit: contain;
    filter: drop-shadow(0 0 4px rgba(255, 215, 0, 0.8)) drop-shadow(0 0 8px rgba(255, 215, 0, 0.5));
}

#app.portrait-mode .bag-item-count {
    font-family: var(--font-pixel);
    font-size: 46px;
    color: var(--accent-color);
    font-weight: bold;
    text-shadow: 0 0 8px rgba(255, 215, 0, 0.5);
}

#app.portrait-mode .bag-item-name {
    font-family: var(--font-pixel);
    font-size: 26px;
    color: #e2e8f0;
    text-align: center;
}

/* リュックアイコン（戦闘中）のサイズ */
#app.portrait-mode .backpack-slot-img {
    width: 60px;
    height: 60px;
}